The present application relates to the technical field of medicine, and in particular to a nonionic gene vector on the basis of a hydrogen bond donor group, and a preparation method therefor and the use thereof. The gene vector loads a gene drug via a group that functions as a hydrogen bond and is formed by a hydrogen bond donor gene and a gene nucleoside or phosphate, and comprises a hydrogen bond donor group being a nonionic lipid and a hydrogen bond donor nonionic polymer. The hydrogen bond donor group mainly comprises thiourea, polyphenol, hydroxyl, urea, thymine, uracil, cytosine, adenine and guanine. The delivery system of the present application can be easily prepared, and loading can be achieved by means of a simple method of blending with mRNA at room temperature, which avoids the previous problems, such as the complex preparation process. In addition, the delivery system of the present invention has the characteristic of being degradable and has good biosafety.
A61K 48/00 - Préparations médicinales contenant du matériel génétique qui est introduit dans des cellules du corps vivant pour traiter des maladies génétiquesThérapie génique
C12N 15/87 - Introduction de matériel génétique étranger utilisant des procédés non prévus ailleurs, p. ex. co-transformation
C07C 335/08 - Dérivés de thiourée ayant des atomes d'azote de groupes thiourée liés à des atomes de carbone acycliques d'un squelette carboné saturé
A61P 43/00 - Médicaments pour des utilisations spécifiques, non prévus dans les groupes
2.
Efficient synthesis method for radiation pattern of conformal array antenna
An efficient synthesis method for a radiation pattern of a conformal array antenna is provided. The method includes: step 1, establishing a field analysis model of the conformal array antenna; determining an aperture field distribution principle suitable for the conformal array antenna, and expanding distribution of an excitation I of an arbitrary curved surface source in a spherical coordinate system according to the aperture field distribution principle; and step 3, establishing an optimization model for the radiation pattern of the conformal array antenna, and performing synthesis of the radiation pattern of the conformal array antenna according to the optimization model. The method greatly improves the synthesis efficiency of a radiation pattern of a conformal array antenna while ensuring that the directional pattern requirements are met.
The present invention belongs to the technical fields of immunology and oncologic therapies. Provided are a tumor microenvironment-regulated CAR-monocyte/macrophage, and a preparation method therefor and the use thereof. When the CAR-monocyte/macrophage forms a chimeric antigen receptor composite structure, GM-CSF can be expressed intracellularly and autocrine to extracellular to promote the differentiation of the CAR-monocyte/macrophage to form an M1 type macrophage, so that the tumor microenvironment can be further regulated while the property of resisting M2 type macrophage reversal in the tumor microenvironment is maintained, thereby sensitizing the anti-tumor effect of the CAR-monocyte/macrophage. On the basis of GM-CSF, a tumor microenvironment-regulated CAR macrophage technology platform is constructed, which can maintain the M1-type characteristics of CAR-M and can also produce a TME reversal effect, thereby achieving the efficient anti-tumor effect of a CAR-monocyte/macrophage.
C07K 14/535 - CSF du type granulocyteCSF du type granulocyte-macrophage
C07K 16/32 - Immunoglobulines, p. ex. anticorps monoclonaux ou polyclonaux contre du matériel provenant d'animaux ou d'humains contre des produits de traduction des oncogènes
A dual-channel laser confocal microscope system for crosstalk elimination is provided, which includes an illumination module, a scanning-imaging module, an acquisition module and a control and reconstruction module. The illumination module is configured to emit dual-wavelength parallel laser beams. The scanning-imaging module is configured to scan the to-be-tested sample point by point to excite and collect the fluorescence signal. The acquisition module is configured to separate the fluorescence signals into different acquisition channels and complete the optical signal acquisition. The control and reconstruction module is configured to control the pulse interleaved excitation of the illumination module and scanning imaging, and is also configured to decouple and reconstruct the fluorescence signals in the different acquisition channels to obtain confocal images without crosstalk for different wavelengths.
HARBIN INSTITUTE OF TECHNOLOGY (SHENZHEN) (HARBIN INSTITUTE OF TECHNOLOGY SHENZHEN INSTITUTE OF SCIENCE AND TECHNOLOGY INNOVATION) (Chine)
XIDIAN UNIVERSITY (Chine)
Inventeur(s)
Kong, Qinglei
Wen, Shuna
Zhang, Songnian
Chen, Bo
Wang, Yifan
Abrégé
A satellite on-orbit security anomaly identification method for a far offshore wind farm, comprising: a system initialization stage, comprising: a trusted authority center setting basic security parameters of a system, wherein the basic security parameters comprise hash functions and a fingerprint function, and initializing an XOR filter; and a first-type satellite and a second-type satellite being set to prepare for subsequent data processing; an anomalous data organization stage, comprising: the first-type satellite receiving anomalous data sent by a remote manager of a far offshore wind farm, adding the anomalous data to the XOR filter, generating corresponding elements by means of fingerprints of the XOR filter, and sending the corresponding elements to the second-type satellite; and an anomalous data intersection stage, comprising: the second-type satellite receiving real-time data sets of sensors of the far offshore wind farm, using the XOR filter to filter out elements which do not belong to an intersection, and then completing a two-set intersection process together with the first-type satellite, i.e., an identification process of the anomalous data. The method satisfies the security requirements for the confidentiality, availability, and integrity of the anomalous data in satellite on-orbit processing, and greatly reduces on-orbit calculation overheads and communication overheads.
An analysis method for evaluating and optimizing wireless energy transfer efficiency and gain of electromagnetic metasurfaces comprises: acquiring total channel characteristics of an mth metasurface unit in a system; acquiring a total channel characteristic matrix C of the metasurface in the system; acquiring a matrix U; acquiring a matrix T; acquiring a quadratic 0-1 integer programming problem for determining the energy transfer efficiency or gain; and using a solution of the above programming problem to obtain optimized energy transfer efficiency or optimized gain, and obtain optimized metasurface unit arrangement. Based on the Friis transmission equation and principle of electric field superposition, this method treats each metasurface unit as an independent radiator, and calculates the superposition of electromagnetic waves influenced by each unit at a receiver or in the far-field of the metasurface, therefore effectively improve the performance of wireless energy transfer, wireless communication, and simultaneous wireless information and power transfer.
H04W 24/02 - Dispositions pour optimiser l'état de fonctionnement
H01Q 15/00 - Dispositifs pour la réflexion, la réfraction, la diffraction ou la polarisation des ondes rayonnées par une antenne, p. ex. dispositifs quasi optiques
7.
SATELLITE IN-ORBIT SECURE ANOMALY DETECTION METHOD FOR OFFSHORE WIND FARMS
HARBIN INSTITUTE OF TECHNOLOGY (SHENZHEN) (HARBIN INSTITUTE OF TECHNOLOGY SHENZHEN INSTITUTE OF SCIE (Chine)
XIDIAN UNIVERSITY (Chine)
Inventeur(s)
Kong, Qinglei
Wen, Shuna
Zhang, Songnian
Chen, Bo
Wang, Yifan
Abrégé
A satellite in-orbit secure anomaly detection method for offshore wind farms, includes: a trusted authority center sets the basic security parameters of the system, and initializes the XOR filter; the first type of satellite and the second type of satellite are configured to prepare for subsequent data processing; the first type of satellite receives anomaly data sent by the remote manager of the offshore wind farm and adds it to the XOR filter, using the fingerprint of the XOR filter to generate corresponding elements and sends them to the second type of satellite; an anomaly data intersection phase: the second type of satellite receives real-time data sets from sensors of the offshore wind farm, uses the XOR filter to filter out elements that do not belong to the intersection, and then completes the intersection process of the two sets with the first type of satellite.
A method for eliminating jamming by OAM mode quadratic coordination is disclosed, including: a transmitter selecting a primary OAM mode and secondary OAM modes; based on a group of keys and real-time time self-defined by the transmitter and the receiver respectively, generating via the transmitter, a mode quadratic collaborative transformation sequence, and based on a mode quadratic collaborative transformation sequence, dividing input binary information bits into OAM mode index information bits and signal modulation bits, and jointly designing a position distribution of their bits in an information frame structure; determining via the transmitter, G quadratic collaborative transformation OAM modes carrying constellation point symbols activated at each hop, loading them onto each array element of an antenna to obtain G mutually orthogonal OAM mode quadratic collaborative transformation signals y, transmitting the G mutually orthogonal OAM mode quadratic collaborative transformation signals y to the receiver.
A service-level communication and computing collaborative resource allocation device and method for a large-scale satellite network are provided, the device includes: a network information management function module including a service request collection unit configured to collect service requests arriving at each satellite node in the network, and a network resource collection unit configured to collect available resource status information for each satellite node; a service preprocessing function module configured to preprocess service requests; a service feature extraction function module configured to perform feature extraction for preprocessed service requests to generate service demand features; a service order decision submodule configured to determine a service order of service requests; a service strategy decision submodule configured to output a service strategy of the service request. The device and method can effectively ensure that the large-scale satellite network provides high-performance services for service with service demands of communication and computing collaborative resources.
H04W 72/0446 - Ressources du domaine temporel, p. ex. créneaux ou trames
H04W 72/566 - Critères d’affectation ou de planification des ressources sans fil sur la base de critères de priorité de l’information, de la source d’information ou du destinataire
10.
TDM-MIMO-BASED RADAR SYSTEM FOR TRAFFIC DYNAMIC TARGET DETECTION
A TDM-MIMO-based radar system for traffic dynamic target detection, relating to the technical field of radar detection. The system comprises a microstrip array antenna unit, a radar radio frequency front-end system, a signal processing unit, a radar data processing system, and a tracking superordinate computer unit; the microstrip array antenna unit transmits and receives electromagnetic waves in different array modes; the radar radio frequency front-end system processes the received electromagnetic waves and generates an ADC signal; the signal processing unit processes the ADC signal to generate speed, distance and angle information; the radar data processing system receives data processed by the signal processing unit and performs target tracking; and the tracking superordinate computer unit displays a tracked target. The TDM-MIMO-based radar system for traffic dynamic target detection improves the gain of radar transmitting and receiving antennas, increases the detection distance, improves the angle accuracy and the angle resolution, and increases the stability of long-range tracking.
Disclosed in the present invention is an array antenna high-order mutual coupling effect analysis method based on an infinitesimal dipole model, specifically comprising the following steps: step 1, calculating mutual admittances of array elements, and constructing mathematical relationships with respect to a first-order mutual coupling effect and a high-order mutual coupling effect; and step 2, establishing an admittance expression for the high-order mutual coupling effect of an N-element array. The method considers the high-order mutual coupling effect between array elements, thus further improving the calculation precision for radiation fields of array antennas.
A method for encoding a point cloud to generate a bitstream of compressed point cloud data is provided, wherein the point cloud's geometry is represented by an octree-based structure with a plurality of nodes having parent-child relationships by recursively splitting a volumetric space containing the point cloud into sub-volumes each associated with a node of the octree-based structure. The method includes: determining eligibility of planar mode for a present node to be encoded for at least two directions; in the case of eligibility of planar mode in at least two directions of the present node, determining one planar flag indicating planar context information for the at least two directions; and entropy encoding occupancy of the present node based on the determined planar context information to produce encoded data for the bitstream.
A design method of a multi-zone grouped and light-homogenized Fresnel lens for a concentrating system includes: step 1, designing, according to a basic principle of a Fresnel lens, a planar Fresnel lens; step 2, establishing, according to an optical path characteristic of the concentrating system, an optical path equation of the concentrating system; step 3, determining a differential form of uniform distribution of luminous energy density; and step 4, based on the step 3, calculating design parameters of the multi-zone grouped and light-homogenized Fresnel lens to obtain the multi-zone grouped and light homogenized Fresnel lens. The obtained Fresnel lens can realize low-power concentrating, solve the problem that luminous energy is too concentrated under a high-power light-concentrating ratio, achieve high-uniformity design under different light-concentrating ratios, and improve the light-homogenized performance of the concentrating system, thereby solving non-uniform luminous energy density distribution on a surface of a photovoltaic cell.
A model training method based on adaptive split learning-federated learning includes: each user terminal uploading device information to the server and the server allocating a propagation step length and a aggregation weight to each user terminal; each user terminal obtaining a current-round global model from the server and taking itself as a start node of a ring topology to perform local joint processing for a preset number of times to obtain a locally-updated model parameter of the start node with respect to current-round training; each user terminal uploading the locally-updated model parameter for the current-round training to the server for aggregation and obtaining a current-round updated global model; and the server determining whether the current-round updated global model meets a convergence condition, if not, performing next-round training, or if yes, determining the current-round updated global model as a trained face recognition model.
A method for encoding, in a bitstream, point attributes associated to a point of a point cloud, includes: determining, for a point P to be encoded to the bitstream, a predictor list of k predictor points of the point cloud including k points of the point cloud nearest to the point P to be encoded, wherein the k points are selected according to their relative position to each other; and encoding the point attributes associated to the point P to be encoded by predictive encoding based on attributes of the predictor points of the predictor list.
Disclosed in the present application are a non-volatile ferroelectric capacitor and a display driving circuit. The non-volatile ferroelectric capacitor comprises: a ferroelectric capacitor, which is formed on the surface of a substrate; and a first channel layer and a second channel layer, which are respectively formed on the surface of the substrate. The ferroelectric capacitor comprises a bottom electrode, a ferroelectric thin film and a top electrode, which are sequentially arranged in a stacked manner; the first channel layer is in contact with the bottom electrode; a dielectric material is formed on the surfaces of the ferroelectric capacitor, the first channel layer and the second channel layer; and a first gate electrode and a second gate electrode are formed on the surface of the dielectric material, such that the structure of the ferroelectric capacitor is obtained.
G09G 3/36 - Dispositions ou circuits de commande présentant un intérêt uniquement pour l'affichage utilisant des moyens de visualisation autres que les tubes à rayons cathodiques pour la présentation d'un ensemble de plusieurs caractères, p. ex. d'une page, en composant l'ensemble par combinaison d'éléments individuels disposés en matrice en commandant la lumière provenant d'une source indépendante utilisant des cristaux liquides
H10B 53/30 - Dispositifs RAM ferro-électrique [FeRAM] comprenant des condensateurs ferro-électriques de mémoire caractérisés par la région noyau de mémoire
17.
NANO-CHANNEL GAN-BASED DEVICE AND MANUFACTURING METHOD THEREFOR
The present invention relates to a nano-channel GaN-based device and a manufacturing method therefor. The nano-channel GaN-based device comprises: a substrate layer, a nucleation layer, a buffer layer, a channel region, an insertion layer, a barrier layer, a cap layer, a first n+material layer, a second n+material layer, a source electrode, a drain electrode and a gate electrode, wherein a first arrayed pattern edge is formed on the side of the first n+material layer close to the drain electrode, a second arrayed pattern edge is formed on the side of the second n+ material layer close to the source electrode, an arrayed nano-channel structure is formed between a source electrode region and a drain electrode region by part of the insertion layer, the barrier layer and the cap layer, the first arrayed pattern edge interdigitates with one end of the arrayed nano-channel structure, and the second arrayed pattern edge interdigitates with the other end of the arrayed nano-channel structure. By means of the embodiments of the present invention, the knee-point voltage of a device can be significantly reduced and a short-channel effect is suppressed, thereby improving the operation efficiency and linearity of the device and thus realizing a higher-performance millimeter-wave power device.
A data processing method and apparatus, and a computation device. The method comprises: a first blockchain node receives task information and sends the task information to a task execution device, wherein the task execution device is used for performing inference computation on a first model according to the task information to obtain an inference result for the first model; the task execution device sends the inference result to a trusted execution environment (TEE) for verification to obtain a verified inference result; and the node in a blockchain system performs on-chain storage on the inference result verified by the TEE. The method can improve the credibility of off-chain computation, and promote the convergence and development of the blockchain technology and the artificial intelligence technology.
G06F 21/57 - Certification ou préservation de plates-formes informatiques fiables, p. ex. démarrages ou arrêts sécurisés, suivis de version, contrôles de logiciel système, mises à jour sécurisées ou évaluation de vulnérabilité
19.
GAN-BASED DEVICE BASED ON PATTERNED OHMIC CONTACT, AND MANUFACTURING METHOD THEREFOR
Disclosed in the present invention is a GaN-based device based on a patterned ohmic contact. The GaN-based device comprises: a substrate layer, a nucleation layer, a buffer layer, a channel layer, an insertion layer, a barrier layer and a cap layer, which are arranged from bottom to top in sequence, wherein ohmic contact recesses extending into the channel layer are respectively provided at two ends of the cap layer; opposite side walls of the two ohmic contact recesses comprise a plurality of arc-shaped side walls and a plurality of flat and straight side walls; an epitaxial layer is provided in each ohmic contact recess; the cap layer and the epitaxial layers are covered with a passivation layer; a source electrode and a drain electrode pass through the passivation layer to be arranged on the two epitaxial layers; and a gate electrode is located between the two ohmic contact recesses and passes through the passivation layer to extend to the cap layer. Further provided in the present invention is a manufacturing method for the GaN-based device based on a patterned ohmic contact. In the present invention, a better ohmic contact can be formed, and the source-drain breakdown characteristic of the device can be prevented from being affected, thereby improving the stability of the device, and improving the performance of a millimeter-wave power device.
H01L 29/778 - Transistors à effet de champ avec un canal à gaz de porteurs de charge à deux dimensions, p.ex. transistors à effet de champ à haute mobilité électronique HEMT
H01L 29/20 - Corps semi-conducteurs caractérisés par les matériaux dont ils sont constitués comprenant, à part les matériaux de dopage ou autres impuretés, uniquement des composés AIIIBV
H01L 29/43 - Electrodes caractérisées par les matériaux dont elles sont constituées
20.
INTER-LAYER LINK DESIGN METHOD OF MULTILAYER CONSTELLATIONS WITH ENHANCED SERVICE COVERAGE CAPABILITY
An inter-layer link design method of multilayer constellations with enhanced service coverage capacity is provided, the method includes: establishing a multilayer satellite network spinning T time slot, and obtaining a coordinate of each satellite in the multilayer satellite network at each time slot under a geocentric coordinate system; establishing an adjacency matrix of each constellation in the multilayer satellite network; establishing a feasible set of inter-layer links between adjacent layers in the multilayer satellite network for each time slot; establishing a globally non-uniform service model according to geographical population distribution, and dividing an earth surface into multiple logical area; obtaining a weight of inter-layer link in the feasible set of inter-layer links at each time slot; establishing an assignment model of inter-layer link according to the weight of inter-layer link; and optimizing an inter-layer link set in the feasible set of inter-layer links to obtain a target inter-layer link set.
A ferroelectric film phase shifter includes a substrate layer; an isolated signal layer located on the substrate layer; first, second and third top transmission line electrodes distributed on the isolated signal layer at intervals; the first and second top transmission line electrodes located at both ends of the isolated signal layer, and the third top transmission line electrode located on a middle region of the isolated signal layer; a bottom transmission line electrode located in the isolated signal layer; an intermediate transmission line structure located in a middle region of the bottom transmission line electrode and adjacent to the third top transmission line electrode; MIM hafnium oxide-based ferroelectric capacitor structures located at two ends of the bottom transmission line electrode; and metal transmission line structures located between each MIM hafnium oxide-based ferroelectric capacitor structure and each of the first top transmission line electrode and the second top transmission line electrode.
H01P 11/00 - Appareils ou procédés spécialement adaptés à la fabrication de guides d'ondes, résonateurs, lignes ou autres dispositifs du type guide d'ondes
A 2-bit high-power amplifying non-reciprocal reflective metasurface is provided. The metasurface comprises a plurality of metasurface units distributed in an array; each metasurface unit comprises a first metal layer, an intermediate layer, and a second metal layer which are sequentially stacked; the second metal layer comprises a receiving metal patch and a transmitting metal patch; two diodes are both positioned on a longitudinal central axis of the receiving metal patch; orientation of the slot on the transmitting metal patch is orthogonal to orientation of the slot on the receiving metal patch; the first metal layer comprises a phase shifter, which comprises first series diodes and second series diodes forming a reconfigurable 90-degree phase-shift circuit.
Provided is an analysis method for transmission and reflection coefficients of a wire mesh of a mesh antenna. The method mainly derives coordinate points of a minimum repeating unit of the wire mesh according to model parameters of the wire mesh; secondly, determines a minimum repeating unit curve of the wire mesh by periodic cubic spline curve interpolation, and determines an organization structure of the wire mesh by vector superposition; thirdly, discretizes an organization structure curve of the organization structure of the wire mesh, to extract a coordinate point of an electromagnetic analysis periodic unit of the wire mesh, and establishes a solid model of the electromagnetic analysis periodic unit of the wire mesh to realize the analysis of the transmission coefficient and the reflection coefficient of the wire mesh; and finally, determines the transmission coefficient and the reflection coefficient of the deformed wire mesh by static analysis.
H01Q 15/00 - Dispositifs pour la réflexion, la réfraction, la diffraction ou la polarisation des ondes rayonnées par une antenne, p. ex. dispositifs quasi optiques
24.
TRANSMISSION-BLOCKING-BASED TRANSMISSION METHOD USING MILLIMETER-WAVE VEHICLE TO X (V2X) COOPERATIVE INTERFERENCE
The present invention relates to the technical field of signal processing. Disclosed is a transmission-blocking-based transmission method using millimeter-wave vehicle to X (V2X) cooperative interference. The method comprises: constructing a V2X network scenario; deploying array antennas at communication nodes in the V2X network scenario, wherein communication channels of the array antennas are millimeter-wave channels, and the millimeter-wave channels are modeled to acquire a millimeter-wave blockage model; using a maximum average power access policy to acquire a base station connected to a legitimate receiving vehicle; according to the millimeter-wave blockage model, acquiring idle users which meet a first condition, and obtaining a first idle user set by using a random process; acquiring from the first idle user set idle users which meet a second condition, and obtaining a second idle user set by using the random process; and according to the millimeter-wave blockage model, the first idle user set and the second idle user set, acquiring a theoretical expression for the secrecy performance of a V2X network, and evaluating the secrecy performance of the V2X network. The present application can improve the secrecy performance of a network in a more efficient manner.
H04W 4/40 - Services spécialement adaptés à des environnements, à des situations ou à des fins spécifiques pour les véhicules, p. ex. communication véhicule-piétons
25.
Binarization method for CT sectional image of fiber package containing artifacts
Provided is a binarization method for CT sectional image of fiber package containing artifacts, which includes: performing brightness adjustment on the source image obtained after converting of the HSV image model by using a composite tangent function; creating a planar morphological structural element having a morphology similar to that of a target object to obtain a background image without the target object; obtaining a second intermediate image by a subtraction operation of the first intermediate image and the background image; improving an image contrast of the second intermediate image again to obtain a third intermediate image; and binarizing the third intermediate image by using a local adaptive threshold binarization algorithm and removing a background noise to obtain a final binarized image. The binarization method can improve the uneven brightness of the image under complex illumination, alleviate the artifacts, and strip similar objects from the background with similar gray scales.
G06T 5/40 - Amélioration ou restauration d'image utilisant des techniques d'histogrammes
G06V 10/28 - Quantification de l’image, p. ex. seuillage par histogramme visant à discriminer entre les formes d’arrière-plan et d’avant-plan
G06V 10/60 - Extraction de caractéristiques d’images ou de vidéos relative aux propriétés luminescentes, p. ex. utilisant un modèle de réflectance ou d’éclairage
H04N 5/272 - Moyens pour insérer une image de premier plan dans une image d'arrière plan, c.-à-d. incrustation, effet inverse
26.
MAGNETIC PARTICLE IMAGING RECONSTRUCTION METHOD BASED ON NEURAL NETWORK CONSTRAINED BY FORWARD MODEL
In a magnetic particle imaging reconstruction method based on a neural network constrained by a forward model, a system matrix is obtained through calibration, voltage data generated by a specimen is measured, collected data are transformed into a frequency-domain by Fourier transform, frequency features of data are screened by a signal-to-noise ratio threshold, a reconstruction network is built by a Pytorch to realize mapping from one-dimensional voltage data to a multi-dimensional magnetic particle concentration distribution, the system matrix is used as the forward model of magnetic particle imaging, and simulated voltage data is generated according to a reconstructed multi-dimensional magnetic particle concentration distribution, a difference between the simulated voltage data and input voltage data is calculated as a loss function for network parameter updating, a total variation regularization term is added to the loss function, and training parameters and regularization parameters are adjusted to achieve an optimal reconstruction effect.
GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD. (Chine)
Inventeur(s)
Zhang, Shuai
Lin, Zhicheng
Bai, Chan
Yan, Denghui
Zhong, Yongwei
Abrégé
The present application provides an antenna module having a simple feed structure and capable of improving radiation performance by means of phase shift, an antenna array, and an electronic device. The antenna module comprises a radiating element and a feed element. The radiating element comprises a pair of first radiating arms and a pair of second radiating arms. The feed element comprises a first feed member and a second feed member. The first feed member is electrically connected to a radio frequency signal source, and coupled to the pair of first radiating arms. A third feed part of the second feed member is electrically connected to one second radiating arm, a fourth feed part of the second feed member is electrically connected to the other second radiating arm, a balun feed part of the second feed member comprises a first feed port, a second feed port and a third feed port, the first feed port is electrically connected to the radio frequency signal source, the second feed port is electrically connected to the third feed part, and the third feed port is electrically connected to the fourth feed part. The antenna array comprises multiple antenna modules arranged in an array. The electronic device comprises a device body, an antenna module, or an antenna array.
GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD. (Chine)
Inventeur(s)
Zhang, Shuai
Chen, Yu
Bai, Chan
Song, Zixuan
Zhong, Yongwei
Abrégé
Provided in the present application are an antenna module, an antenna array and an electronic device, which antenna module has a simple feed structure and can improve the radiation performance by means of phase shifting. The antenna module comprises a radiation unit and a feed unit, wherein the radiation unit comprises a pair of first radiation arms, a pair of second radiation arms, and a first conductive connection member, which is electrically connected between the pair of first radiation arms. The feed unit comprises a first feed member and a second feed member, wherein the first feed member is electrically connected to one first radiation arm and is electrically connected to a radio-frequency signal source, and the second feed member comprises a transmission portion, a first feed portion and a second feed portion, which are sequentially connected; the transmission portion is electrically connected to the radio-frequency signal source, the first feed portion is coupled to one second radiation arm, and the second feed portion is coupled to the other second radiation arm; and the first conductive connection member is used for adjusting the phase difference between radio-frequency currents of the pair of first radiation arms. The antenna array comprises a plurality of antenna modules, which are arranged in an array. The electronic device comprises a device body, and an antenna module or an antenna array.
H01Q 1/36 - Forme structurale pour éléments rayonnants, p. ex. cône, spirale, parapluie
H01Q 5/40 - Structures imbriquées ou entrelacéesDispositions combinées ou présentant un couplage électromagnétique, p. ex. comprenant plusieurs éléments rayonnants alimentés sans connexion commune
GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD. (Chine)
Inventeur(s)
Zhang, Shuai
Zhang, Qianzhu
Bai, Chan
Wei, Hao
Zhong, Yongwei
Abrégé
The present application provides an antenna module, an antenna array, and an electronic device, each of which has a simple feed structure and can improve the radiation performance by means of phase shift. The antenna module comprises a radiation unit and a feed unit. The radiation unit comprises a pair of first radiation arms and a pair of second radiation arms. The feed unit comprises a first feed member and a second feed member which are spaced apart from each other. The first feed member comprises a transmission portion, a first feed portion, and a second feed portion which are connected in sequence. The first feed portion is arranged opposite and coupled to one first radiation arm, and the second feed portion is arranged opposite and coupled to the other first radiation arm. The second feed member comprises a third feed portion, a first connecting portion, and a fourth feed portion which are connected in sequence. The third feed portion is electrically connected to one second radiation arm, and the fourth feed portion is electrically connected to the other second radiation arm. The antenna array comprises a plurality of antenna modules arranged in an array. The electronic device comprises a device body, the antenna module or the antenna array.
A joint encoding method for multiple modality information sources. The joint encoding method comprises: first extracting features from a plurality of modality information sources by means of corresponding first encoders, and removing internal redundancy of each modality signal, so as obtain corresponding feature maps; then connecting the plurality of feature maps and inputting same into a second encoder, such that the feature maps are decoupled into a common feature map and personalized feature maps, wherein the common feature map represents the common part among the different modality information sources, and each personalized feature map represents the unique feature of each modality information source; and finally, decoding the personalized feature maps and the common feature map of the plurality of modality information sources by means of corresponding decoders, and reconstructing corresponding modality information sources, i.e. respectively converting, by means of entropy encoding, the feature maps into binary code streams, and storing or transmitting the binary code streams, and after entropy decoding is performed on the binary code streams at a decoding end, respectively restoring the binary code streams by means of the corresponding decoders, so as to obtain the corresponding modality information sources. The present invention reduces, by using the correlation between different information sources, the repeated transmission of related information, such that a transmission bandwidth is reduced, and a storage space is saved on; and a decoding end restores different modality information sources, thereby achieving the scalability of the modalities.
H04N 19/136 - Caractéristiques ou propriétés du signal vidéo entrant
H04N 19/40 - Procédés ou dispositions pour le codage, le décodage, la compression ou la décompression de signaux vidéo numériques utilisant le transcodage vidéo, c.-à-d. le décodage partiel ou complet d’un flux d’entrée codé suivi par un ré-encodage du flux de sortie décodé
H04N 19/91 - Codage entropique, p. ex. codage à longueur variable ou codage arithmétique
31.
ANTENNA MODULE, ANTENNA ARRAY, AND ELECTRONIC DEVICE
GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD. (Chine)
Inventeur(s)
Zhang, Shuai
Bai, Chan
Song, Zixuan
Wei, Hao
Zhong, Yongwei
Gu, Liang
Abrégé
The present application provides an antenna module, an antenna array, and an electronic device. The antenna module comprises a radiation unit, a coupler, a first feed member, and a second feed member; the radiation unit comprises a pair of first radiation arms and a pair of second radiation arms; the coupler receives an original radio-frequency signal inputted by a feed source, and according to the original radio-frequency signal, outputs first and second radio-frequency signals having the same amplitude and a phase difference of 90°; the first feed member comprises a first transmission portion and a first feed portion which are connected in a bent manner; the first transmission portion is connected to the coupler to receive the first radio-frequency signal; the first feed portion couples and feeds the pair of first radiation arms; the second feed member comprises a second transmission portion and a second feed portion which are connected in a bent manner; the second transmission portion is spaced apart from the first transmission portion, and is connected to the coupler to receive the second radio-frequency signal; and the second feed portion couples and feeds the pair of second radiation arms. The antenna module can transmit and receive a circularly polarized electromagnetic wave signal, and thus has good communication performance when communicating with a circularly polarized satellite.
A method for encoding and decoding, an encoder and decoder for a point cloud is disclosed. The method for encoding a point cloud to generate a bitstream of compressed point cloud data, the point cloud's geometry being represented by an octree-based structure with a plurality of nodes having parent-child relationships by recursively splitting a volumetric space containing the point cloud into sub-volumes each associated with a node of the octree-based structure, including: determining context information of a current node including plane position context information, the plane position context information of the current node being determined according to an occupancy of a neighboring node directly adjacent to the current node and an occupancy of at least one sibling node having the same parent node as the current node; and entropy encoding the occupancy information of the current node based on the determined context information to produce encoded data for the bitstream.
A deployable mesh antenna based on dome-type tensegrity includes: a wire mesh reflector, a dome-type reflector support system, and a peripheral deployable truss which are coaxially arranged; the peripheral deployable truss includes: a annular main rod and end-to-end truss units disposed on the main rod; an outermost cable boundary of the dome-type reflector support system is fixedly connected to the peripheral deployable truss, and the dome-type reflector support system includes: an inner strut ring, an outer circumference of the inner strut ring is connected to radial rib units, each radial rib unit is arranged at a radial direction of the inner strut ring, and the radial rib units are connected through hoop cables; the wire mesh reflector is covered on the dome-type reflector support system to form a parabolic structure, the wire mesh reflector is petal-shaped, and the wire mesh reflector has a grid structure.
Disclosed in the present invention are a model training method and a face recognition method based on adaptive split learning-federated learning, the former comprising: each user side uploading device information to a server side, and the server side allocating a propagation step and an aggregation weight to each user side on the basis of all the device information; in a current round of training, each user side acquiring a current-round global model from the server side and performing local joint processing for a preset number of times with the user side itself serving as the initial end of a ring topological structure consisting of all user sides, so as to obtain locally-updated model parameters of the initial end with regard to the current round of training; each user side uploading to the server side the locally-updated model parameters with regard to the current round of training, so as to obtain a current-round updated global model by means of aggregation; a server determining whether the current-round updated global model converges; if not, carrying out the next round of training; and if so, determining the current-round updated global model as a training-completed face recognition model. The present invention can solve the problem of heterogeneity, protect privacy, and increase the convergence speed and face recognition accuracy.
The present invention relates to the technical field of brain-computer interface technology applications, and disclosed is a brain-computer information fusion classification method and system for shared subspace learning. The brain-computer information fusion classification method comprises a training stage and a reasoning stage. In the training stage, paired images and brain response data are utilized, shared subspace model parameters of the images and brain responses are optimized by means of a contrastive learning policy of positive/negative sample sampling, and an image classifier is trained; and in the reasoning stage, image features are extracted for classification, and an application target of the whole brain-computer information fusion classification system is achieved. The brain-computer information fusion classification system for shared subspace learning of the present invention can train a shared subspace in an end-to-end mode, efficient migration of brain cognitive information is achieved, and the performance of an image classification task in a complex open scenario is improved; by means of an application that "the brain is not in a loop", the efficiency and the stability in the practical application are improved, and the present invention has a wide application prospect under a new normal form of brain-computer information cooperative work.
The present invention belongs to the technical fields of immunology and oncologic therapies. Provided are a tumor microenvironment-regulated CAR-monocyte/macrophage, and a preparation method therefor and the use thereof. When the CAR-monocyte/macrophage forms a chimeric antigen receptor composite structure, GM-CSF can be expressed intracellularly and autocrine to extracellular to promote the differentiation of the CAR-monocyte/macrophage to form an M1 type macrophage, so that the tumor microenvironment can be further regulated while the property of resisting M2 type macrophage reversal in the tumor microenvironment is maintained, thereby sensitizing the anti-tumor effect of the CAR-monocyte/macrophage. On the basis of GM-CSF, a tumor microenvironment-regulated CAR macrophage technology platform is constructed, which can maintain the M1-type characteristics of CAR-M and can also produce a TME reversal effect, thereby achieving the efficient anti-tumor effect of a CAR-monocyte/macrophage.
A method for encoding attributes of points of a point cloud, includes: determining a true transform coefficient by applying RAHT to attributes of a present node; determining a difference between attributes of a present parent node and each parent node of a first set of parent nodes sharing a face or an edge with the present node; selecting a second set of parent nodes from the first set of parent nodes according to the difference; determining a predicted value for the attributes of the present node according to attributes of the second set of parent nodes; determining a predicted transform coefficient by applying the RAHT to the predicted value of the attributes of the present node; determining a residual from the true transform coefficient and the predicted transform coefficient; and encoding the residual to produce encoded data of attributes of the point cloud for a bitstream.
H04N 19/61 - Procédés ou dispositions pour le codage, le décodage, la compression ou la décompression de signaux vidéo numériques utilisant un codage par transformée combiné avec un codage prédictif
38.
Terminal structure for conduction cooling high temperature superconducting cable
The present application discloses a terminal structure for conduction cooling high temperature superconducting cable, comprising: a cable terminal body; a terminal thermal insulation shell, in which a vacuum thermal insulation cavity is formed, and the cable terminal body being arranged in the vacuum thermal insulation cavity; a refrigeration mechanism comprising a refrigeration output part extending into the vacuum thermal insulation cavity, and the refrigeration output part being connected to the cable terminal body through a cooling-conducting structure. The terminal structure provided by the present application cools the high-temperature superconducting cable by means of conduction cooling of a refrigerator without operations of low-temperature liquid transportation and supplementary, and can operate for a long time without regular maintenance, reduce the heat leakage of the cable terminal, improve the utilization efficiency of the cooling capacity of the refrigerator, and effectively ensure the stable operation of the cable for a long time.
Provided are an α1β1 integrin-dependent enhancement CAR-macrophage, a preparation method therefor and use thereof. The CAR-macrophage comprises an α1β1 integrin transmembrane region, an intracellular signal regulatory motif, an FcγRⅠ intracellular signal transduction motif, and an extracellular antigen-binding region having nucleotide sequences as set forth in SEQ ID NO: 1-4, respectively. According to the present invention, by designing a specific element applicable to the signal transduction function of macrophages, a CAR-macrophage technology platform is constructed in the true sense, the CAR-macrophage technology platform being widely applicable to a variety of applications and derivative designs for the treatment of solid tumors by CAR-macrophages.
A method for encoding a point cloud to generate a bitstream of compressed point cloud data is provided. The point cloud’s geometry is represented by an octree-based structure with a plurality of nodes having parent-child relationships by recursively splitting a volumetric space containing the point cloud into sub-volumes each associated with a node of the octree-based structure. The method includes: determining a coding mode, wherein the coding mode includes a planar coding mode and an angular coding mode; obtaining coding context information for a present child node, entropy encoding the present child node based on the obtained coding context information to produce encoded data for the bitstream.
H04N 19/96 - Codage au moyen d'une arborescence, p. ex. codage au moyen d'une arborescence quadratique
H04N 19/91 - Codage entropique, p. ex. codage à longueur variable ou codage arithmétique
H04N 19/184 - Procédés ou dispositions pour le codage, le décodage, la compression ou la décompression de signaux vidéo numériques utilisant le codage adaptatif caractérisés par l’unité de codage, c.-à-d. la partie structurelle ou sémantique du signal vidéo étant l’objet ou le sujet du codage adaptatif l’unité étant des bits, p. ex. de flux vidéo compressé
Provided are a CMOS structure, and fabrication methods of a FinFET CMOS, an FD CMOS and a GAA CMOS. The CMOS structure includes an nMOS and a pMOS, The nMOS includes a first channel region and a first gate electrode formed on a semiconductor substrate, and the pMOS includes a second channel region and a second gate electrode formed on the semiconductor substrate, where the first channel region and the second channel region are formed of semiconductor materials with the same conductivity type, and the first gate electrode and the second gate electrode are formed of the conductive materials with the same work function. This CMOS structure reduces the processing steps for fabricating the CMOS, thereby reducing the process complexity and the production cost, which is beneficial for improving the performance and reliability of CMOS and its integrated circuits.
H01L 27/12 - Dispositifs consistant en une pluralité de composants semi-conducteurs ou d'autres composants à l'état solide formés dans ou sur un substrat commun comprenant des éléments de circuit passif intégrés avec au moins une barrière de potentiel ou une barrière de surface le substrat étant autre qu'un corps semi-conducteur, p.ex. un corps isolant
H01L 21/84 - Fabrication ou traitement de dispositifs consistant en une pluralité de composants à l'état solide ou de circuits intégrés formés dans ou sur un substrat commun avec une division ultérieure du substrat en plusieurs dispositifs individuels pour produire des dispositifs, p.ex. des circuits intégrés, consistant chacun en une pluralité de composants le substrat étant autre chose qu'un corps semi-conducteur, p.ex. étant un corps isolant
42.
NETWORK NODE SIMULATION METHOD BASED ON LINUX CONTAINER
A large-scale network node simulation method based on Linux container is provided, which solves problems of low packet transmission efficiency and multi-thread creation in real-time simulation in a large-scale network scenario. The method includes: scheduling all container nodes in a scenario; managing, by a container node, a dynamic thread through an idle thread management queue, and setting a finite state machine and a function pointer for the dynamic thread; registering, by a source container node, an output queue with a next-hop container node, and informing the next-hop container node to allocate a dynamic thread for receiving and processing the output queue. Packet transmission is realized between the container nodes through data units created in a shared memory. The sending thread and the receiving thread dynamically adjust the number of dynamic threads by checking the state of the output queue.
H04L 47/62 - Ordonnancement des files d’attente caractérisé par des critères d’ordonnancement
H04L 41/40 - Dispositions pour la maintenance, l’administration ou la gestion des réseaux de commutation de données, p. ex. des réseaux de commutation de paquets en utilisant la virtualisation des fonctions réseau ou ressources, p. ex. entités SDN ou NFV
Embodiments of the present disclosure provide a pattern complementation-based virtual network mapping method and apparatus, and a computer readable storage medium. The method comprises: receiving a mapping request for a virtual network; for any virtual node v: calculating the sum of link resource requirements of virtual links associated with the virtual node v as the total resource requirements of the associated links of the virtual node v; selecting, from a set of mapping patterns on the basis of computing resource requirements of the virtual node v and the total resource requirements of the associated links the virtual node v, a mapping pattern i corresponding to the virtual node v; determining a set of candidate physical nodes corresponding to the mapping pattern i and the order of the candidate physical nodes; and mapping the virtual node v to a physical node p on the basis of the set of candidate physical nodes; and after determining the physical nodes respectively corresponding to a plurality of virtual nodes, determining path mapping information on the basis of at least one physical path between the plurality of physical nodes, node mapping information, and the link resource requirements of each virtual link. Hence, compared with the mode in the prior art of matching requirements with resources, the embodiments of the present disclosure realize virtual network mapping on the basis of the idea of pattern-to-pattern matching, so that not only decisions can be quickly made, but also physical resources can be efficiently utilized.
G06F 9/455 - ÉmulationInterprétationSimulation de logiciel, p. ex. virtualisation ou émulation des moteurs d’exécution d’applications ou de systèmes d’exploitation
H04L 45/00 - Routage ou recherche de routes de paquets dans les réseaux de commutation de données
H04L 41/08 - Gestion de la configuration des réseaux ou des éléments de réseau
44.
WIRELESS NETWORK REFLECTING ARRAY APPLICABLE TO DATA CENTER, AND DEPLOYMENT METHOD THEREFOR
The present invention relates to a wireless communication network for a data center, and a deployment method therefor. The wireless communication network comprises: a plurality of wireless nodes; and a plurality of metasurface reflecting plates, which are configured to serve as reflecting plates of a wireless signal, wherein the plurality of metasurface reflecting plates are arranged between the plurality of wireless nodes, so as to support the reuse of the metasurface reflecting plates. The embodiments of the present invention can greatly improve the throughput of a wireless network system and the number of reliable concurrent links.
The present invention relates to a method and apparatus for performing service deployment in a data center. The method comprises: receiving a plurality of service requests; estimating a mean value and a variance of service requirements of a plurality of services; determining, on the basis of the mean value and the variance of the service requirements, whether the services are services to be reconstructed; and deploying, in the same schedulable server, services to be reconstructed which have the same or similar variances, in order to allocate resources on the same schedulable server, so as to meet the service requirements of the services to be reconstructed which have the same or similar variances. The embodiments of the present invention can significantly improve the utilization rate of server resources of a data center, and improve the quality of service.
GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD. (Chine)
Inventeur(s)
Zhang, Shuai
Bai, Chan
Zhong, Yongwei
Gu, Liang
Abrégé
The present application provides an antenna module and an electronic device. The antenna module comprises a plurality of antenna units, which are arranged in an array. The antenna unit comprises: a radiation unit, which comprises at least one pair of radiation arms, wherein each radiation arm is provided with a feed point; and a feed unit, which is located on a layer different from that of the radiation unit, is arranged opposite the radiation unit and comprises at least one first feed arm. The feed arm comprises a first feed end, a first feed connection point, a second feed connection point, and a first arc-shaped Balun line which is electrically connected to the first feed end, the first feed connection point and the second feed connection point in sequence, wherein the first feed connection point and the second feed connection point are arranged in a coplanar manner, and the first feed connection point and the second feed connection point are electrically connected to two feed points in a pair of radiation arms, respectively. By means of the antenna module and the electronic device provided in the present application, the size of the antenna module is reduced, and the performance of the antenna module is ensured.
H01Q 1/38 - Forme structurale pour éléments rayonnants, p. ex. cône, spirale, parapluie formés par une couche conductrice sur un support isolant
H01Q 1/48 - Moyens de mise à la terreÉcrans de terreContrepoids
H01Q 1/50 - Association structurale d'antennes avec commutateurs de terre, dispositions de descente d'antennes ou parafoudres
H01Q 1/36 - Forme structurale pour éléments rayonnants, p. ex. cône, spirale, parapluie
H01P 5/10 - Dispositifs de couplage du type guide d'ondes destinés au couplage de lignes ou de dispositifs de différentes sortes destinés au couplage de lignes ou de dispositifs équilibrés avec des lignes ou des dispositifs déséquilibrés
47.
Wireless communication network resource allocation method with dynamic adjustment on demand
A wireless communication network resource allocation method implemented in a server in a wireless communication network, includes: obtaining task feature information of each user device and a CPU frequency of the server in each time slot; obtaining a task data volume average value; determining, based on a knowledge base including sample data groups and optimal resource allocation models, a target optimal resource allocation model matched with the task data volume average value and the CPU frequency of the server; obtaining, based on the task feature information of the user devices in the time slot and the target optimal resource allocation model, resource allocation results of the user devices, and transmitting task data to the user devices based on the results. A width of a dynamic neural network can be automatically adjusted according to task features and computational capacity, and on-demand adjustment of decision speed and resource optimality can be realized.
H04W 28/16 - Gestion centrale des ressourcesNégociation de ressources ou de paramètres de communication, p. ex. négociation de la bande passante ou de la qualité de service [QoS Quality of Service]
G06F 9/50 - Allocation de ressources, p. ex. de l'unité centrale de traitement [UCT]
H04L 67/1008 - Sélection du serveur pour la répartition de charge basée sur les paramètres des serveurs, p. ex. la mémoire disponible ou la charge de travail
48.
PATHOLOGICAL SECTION ANALYZER WITH LARGE FIELD OF VIEW, HIGH THROUGHPUT AND HIGH RESOLUTION
A large-field-of-view, high-throughput and high-resolution pathological section analyzer includes an image collector for collecting a set of computing microscopic images of a pathological section sample; a data preprocessing circuit for iteratively updating the set of computing microscopic images by a multi-height phase recovery algorithm to obtain a low-resolution reconstructed image; an image super-resolution circuit for super-resolving the low-resolution reconstructed image according to a pre-trained super-resolution model to obtain a high-resolution reconstructed image; and an image analysis circuit for automatically analyzing the high-resolution reconstructed image according to different tasks, and specifically selecting different analysis models according to the different tasks to obtain corresponding auxiliary diagnosis results. Imaging visual field of the pathological section analyzer is hundreds of times that of the traditional optical microscope, a deep learning network is adopted to analyze pathological conditions of unstained pathological sections, so that the analysis process of pathological sections is simplified.
H04N 25/76 - Capteurs adressés, p. ex. capteurs MOS ou CMOS
H04N 23/955 - Systèmes de photographie numérique, p. ex. systèmes d'imagerie par champ lumineux pour l’imagerie sans objectif
H04N 23/56 - Caméras ou modules de caméras comprenant des capteurs d'images électroniquesLeur commande munis de moyens d'éclairage
G06V 10/764 - Dispositions pour la reconnaissance ou la compréhension d’images ou de vidéos utilisant la reconnaissance de formes ou l’apprentissage automatique utilisant la classification, p. ex. des objets vidéo
G06V 10/774 - Génération d'ensembles de motifs de formationTraitement des caractéristiques d’images ou de vidéos dans les espaces de caractéristiquesDispositions pour la reconnaissance ou la compréhension d’images ou de vidéos utilisant la reconnaissance de formes ou l’apprentissage automatique utilisant l’intégration et la réduction de données, p. ex. analyse en composantes principales [PCA] ou analyse en composantes indépendantes [ ICA] ou cartes auto-organisatrices [SOM]Séparation aveugle de source méthodes de Bootstrap, p. ex. "bagging” ou “boosting”
G06V 20/70 - Étiquetage du contenu de scène, p. ex. en tirant des représentations syntaxiques ou sémantiques
G06V 10/26 - Segmentation de formes dans le champ d’imageDécoupage ou fusion d’éléments d’image visant à établir la région de motif, p. ex. techniques de regroupementDétection d’occlusion
G06V 10/82 - Dispositions pour la reconnaissance ou la compréhension d’images ou de vidéos utilisant la reconnaissance de formes ou l’apprentissage automatique utilisant les réseaux neuronaux
G06V 10/762 - Dispositions pour la reconnaissance ou la compréhension d’images ou de vidéos utilisant la reconnaissance de formes ou l’apprentissage automatique utilisant le regroupement, p. ex. de visages similaires sur les réseaux sociaux
G06V 10/74 - Appariement de motifs d’image ou de vidéoMesures de proximité dans les espaces de caractéristiques
G02B 21/36 - Microscopes aménagés pour la photographie ou la projection
G02B 21/26 - PlatinesMoyens de réglage pour celles-ci
A method for encoding and decoding, an encoder and decoder for a point cloud. The method for encoding a point cloud to generate a bitstream of compressed point cloud data, in which the point cloud's geometry is represented by an octree-based structure with a plurality of nodes having parent-child relationships by recursively splitting a volumetric space containing the point cloud into sub-volumes each associated with a node of the octree-based structure, includes: determining an occupancy pattern for a parent node based on the occupancy of its child nodes; determining a planar context information for at least one of the child nodes; and entropy encoding/decoding the occupancy pattern parent node based on the determined planar context information to produce encoded/decoded data for the bitstream.
Disclosed in the present application are a non-volatile ferroelectric capacitor and a display driving circuit. The non-volatile ferroelectric capacitor comprises: a ferroelectric capacitor, which is formed on the surface of a substrate; and a first channel layer and a second channel layer, which are respectively formed on the surface of the substrate. The ferroelectric capacitor comprises a bottom electrode, a ferroelectric thin film and a top electrode, which are sequentially arranged in a stacked manner; the first channel layer is in contact with the bottom electrode; a dielectric material is formed on the surfaces of the ferroelectric capacitor, the first channel layer and the second channel layer; and a first gate electrode and a second gate electrode are formed on the surface of the dielectric material, such that the structure of the ferroelectric capacitor is obtained. A non-volatile ferroelectric capacitor is integrated into a display driving circuit, such that new non-volatile display driving technology with low power consumption and high display quality is obtained.
H01G 7/06 - Condensateurs dont la capacité varie par des moyens non mécaniquesProcédés pour leur fabrication à diélectrique choisi pour sa variation de permittivité en fonction de la tension appliquée, c.-à-d. condensateurs ferro-électriques
G09G 3/36 - Dispositions ou circuits de commande présentant un intérêt uniquement pour l'affichage utilisant des moyens de visualisation autres que les tubes à rayons cathodiques pour la présentation d'un ensemble de plusieurs caractères, p. ex. d'une page, en composant l'ensemble par combinaison d'éléments individuels disposés en matrice en commandant la lumière provenant d'une source indépendante utilisant des cristaux liquides
G09G 3/3208 - Dispositions ou circuits de commande présentant un intérêt uniquement pour l'affichage utilisant des moyens de visualisation autres que les tubes à rayons cathodiques pour la présentation d'un ensemble de plusieurs caractères, p. ex. d'une page, en composant l'ensemble par combinaison d'éléments individuels disposés en matrice utilisant des sources lumineuses commandées utilisant des panneaux électroluminescents semi-conducteurs, p. ex. utilisant des diodes électroluminescentes [LED] organiques, p. ex. utilisant des diodes électroluminescentes organiques [OLED]
51.
Scene-based beam generation method for ground-to-air coverage based on convex polygon subdivision
A scene-based beam generation method for ground-to-air coverage based on convex polygon subdivision is provided and includes: obtaining a collection of base station positions by using a method of universal transverse mercator projection; constructing a three-dimensional (3D) low altitude signal coverage area; performing convex polygon subdivision on the area to be covered; and generating a beam configuration of each base station. The method realizes generation of beam configurations of base stations in the 3D low altitude signal coverage area, overcomes a problem that the existing 17 kind of scene-based beams cannot realize the coverage of 3D area, overcomes a problem of mismatch between network state information and beam configuration caused by dynamic adjustment of beam configurations. The beam configurations generated by the method does not need to obtain the number of users in real time to adjust the beam, and has a good coverage ability.
Provided in the embodiments of the present application are a blockchain-based privacy protection scheme aggregation method and apparatus. The method comprises: a blockchain system receiving local scheme gradient ciphertext uploaded by each client; the blockchain system issuing an aggregation task to an aggregation server and a verification server by means of a smart contract, wherein the aggregation task is used for aggregating the local scheme gradient ciphertext of each client by means of an aggregation rule, so as to acquire global scheme gradient ciphertext; the blockchain system determining the global scheme gradient ciphertext on the basis of aggregation results of the aggregation server and the verification server executing the aggregation task; and the blockchain system issuing the global scheme gradient ciphertext to each client, wherein after being decrypted, the global scheme gradient ciphertext is used by the client to train a local scheme. The method is used for reducing the calculation overheads of a blockchain node, and improving the accuracy of a global scheme gradient.
Disclosed in the present invention are a spatial text query method and apparatus. The method comprises: obtaining a query request, wherein the query request comprises a query range and a query keyword set, and the query range is a closed region formed by a query curve; encoding the query keyword set to obtain a query keyword vector; performing polynomial fitting on the query curve to determine a query range vector; obtaining a first lower triangular matrix on the basis of the query range vector and the query keyword vector; encrypting the first lower triangular matrix by means of a first encryption matrix to obtain a query sub trap door; and on the basis of each query sub trap door and the index of each object in a spatial text data set, determining an object satisfying preset conditions to be a query result, wherein the index of any object is obtained by encrypting, by means of a second encryption matrix, a second lower triangular matrix that is obtained according to the spatial position of the object and a keyword set. Therefore, the present invention satisfies the query range actually required by a user, and improves the query accuracy.
A method for encoding and decoding, an encoder and decoder for coding/decoding a point cloud as a bitstream of compressed point cloud data, wherein the point cloud's geometry is represented by an octree-based structure with a plurality of nodes having parent-child relationships by recursively splitting a volumetric space containing the point cloud into sub-volumes each associated with a node of the octree-based structure. The method of encoding comprises: determining eligibility of planar mode for the present node to be encoded for at least two directions and preferably for three directions; in the case of eligibility of planar mode in at least two directions of the present node, determining one planar flag indicating planar context information for the at least two directions; entropy encoding occupancy of the present node based on the determined planar context information to produce encoded data for the bitstream.
GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD. (Chine)
Inventeur(s)
Zhang, Shuai
Liu, Yuguo
Yong, Zhengdong
Lu, Bao
Abrégé
An antenna apparatus, an electronic device and a decoupling method for the antenna apparatus. The antenna apparatus includes a first antenna unit and a second antenna unit, a first decoupling network including a first input port connected to a first feed source; a first output port connected to the first antenna unit; and a first decoupling port; a second decoupling network including a second input port connected to a second feed source; a second output port connected to the second antenna unit; and a second decoupling port; and a decoupling transmission line connected between the first decoupling port and the second decoupling port. The first decoupling network and the decoupling transmission line form a power divider, such that a power input from the first input port is distributed to the first antenna unit and the decoupling transmission line based on a power division ratio of the power divider.
H01Q 21/08 - Réseaux d'unités d'antennes, de même polarisation, excitées individuellement et espacées entre elles les unités étant espacées le long du trajet rectiligne ou adjacent à celui-ci
GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD. (Chine)
Inventeur(s)
Zhang, Shuai
Huang, Nan
Yong, Zhengdong
Lu, Bao
Abrégé
Provided are an antenna apparatus and an electronic device. The antenna apparatus comprises a plurality of antenna units, spaced from each other; a plurality of decoupling networks, corresponding to the plurality of antenna units one to one; and a decoupling transmission line. Each of the decoupling networks comprises a first transmission line and a second transmission line; an end of the first transmission line is configured to be connected to a radio-frequency chip, the other end of the first transmission line is connected to an end of the second transmission line, a decoupling port is formed at a joint between the other end of the first transmission line and the end of the second transmission line, and the other end of the second transmission line is connected to a corresponding antenna unit; and the decoupling transmission lines is connected between adjacent decoupling ports. The electronic device comprises the antenna apparatus.
H01Q 21/08 - Réseaux d'unités d'antennes, de même polarisation, excitées individuellement et espacées entre elles les unités étant espacées le long du trajet rectiligne ou adjacent à celui-ci
H01Q 1/24 - SupportsMoyens de montage par association structurale avec d'autres équipements ou objets avec appareil récepteur
H01Q 1/52 - Moyens pour réduire le couplage entre les antennesMoyens pour réduire le couplage entre une antenne et une autre structure
Disclosed are methods and devices for point cloud prediction, point cloud encoding and point cloud decoding. The point cloud prediction method comprises: obtaining an encoded candidate point according to an encoded point in a point cloud; obtaining a geometric distance between a point to be encoded and the encoded candidate point according to the position of the point to be encoded in the point cloud and the position of the encoded candidate point in the point cloud; obtaining an attribute distance between the point to be encoded and the encoded candidate point according to encoded attribute information corresponding to the encoded candidate point and encoded attribute information corresponding to the point to be encoded; obtaining an encoded matching point according to the geometric distance and the attribute distance; and according to the encoded matching point, predicting an attribute to be encoded corresponding to the point to be encoded to obtain a prediction value. The present invention better takes into account a relationship between the attribute of the encoded point and the attribute of the point to be encoded, obtaining a more accurate prediction value, and improving a point cloud encoding effect.
G06T 17/00 - Modélisation tridimensionnelle [3D] pour infographie
H04N 19/593 - Procédés ou dispositions pour le codage, le décodage, la compression ou la décompression de signaux vidéo numériques utilisant le codage prédictif mettant en œuvre des techniques de prédiction spatiale
58.
SOLAR SELF-POWERED SOLID HYBRID RIS, DYNAMIC HYBRID RIS AND ACTIVE RIS
Disclosed in the present invention are a solar self-powered solid hybrid RIS, a dynamic hybrid RIS and an active RIS. The solid hybrid RIS comprises a plurality of active reflection elements, which are arranged regularly in the middle, a plurality of passive reflection elements, which are arranged regularly at the periphery, and an RIS controller, which is respectively connected to the active reflection elements and the passive reflection elements, wherein the RIS controller is used for controlling the phases and amplitudes of incident signals on the active reflection elements and controlling the phases of incident signals on the passive reflection elements; and the active reflection elements each comprise a solar cell unit, and the solar cell units can convert light incident on the active reflection elements into electric energy, so as to supply power to the active reflection elements and the RIS controller. The RIS in the present invention is integrated with a solar cell, so as to supply power to a reflection-type amplifier by using solar energy, such that the reflection-type amplifier can amplify the amplitude of an incident signal, and can also be deployed in a remote area without a power system to power supply, so as to assist in communication, channel estimation, positioning, etc., thereby breaking away from dependence on a power system.
A road network operation state detection system and method for a mixed traffic flow. The system comprises a sensing module (1), a communication module (2), and a cloud control platform module (3). The sensing module (1) is used for acquiring in real time traffic information data of networked vehicles and non-networked vehicles in an observation road segment. The communication module (2) is used for performing information interaction between the networked vehicles and between the networked vehicles and a roadside, and transmitting the traffic information data to the cloud control platform module (3). The cloud control platform module (3) is used for performing data fusion and analysis on traffic information data within a predetermined time to determine vehicle operation conditions and obtain a road network operation situation evolution rule. According to the system, different characteristics of a mixed traffic flow are considered, operation data of non-networked vehicles are acquired and transmitted by means of networked vehicles and a roadside device in the road to supplement road state information, and the accuracy of real-time detection and recognition of road network state information is improved by means of communication data of the networked vehicles.
This invention proposes a reflective surface antenna based on a triple telescopic rod drive and quasi-geodesic grid structure, including a supportive back frame, a reflective surface frame, a vertical connecting rod, a primary reflective surface, an auxiliary reflective surface, a radial support rod, a feed source, and an attitude control device. The supportive back frame and reflective surface frame have a paraboloidal truss structure. The primary reflective surface is fixed on the quasi-geodesic grid of the reflective surface; the auxiliary reflective surface is fixed at the focal point of the primary reflective surface; the feed source is fixed at the apex of the reflective surface; and the attitude control device includes a base and a telescopic rod.
H01Q 15/16 - Surfaces réfléchissantesStructures équivalentes courbes suivant deux dimensions, p. ex. paraboloïdales
H01Q 19/18 - Combinaisons d'éléments actifs primaires d'antennes avec des dispositifs secondaires, p. ex. avec des dispositifs quasi optiques, pour donner à une antenne une caractéristique directionnelle désirée utilisant des surfaces réfléchissantes comportant plusieurs surfaces réfléchissantes
61.
Method and system for defending against adversarial sample in image classification includes denoising by an adversarial denoising network, and data processing terminal
A method for defending against an adversarial sample in image classification includes: denoising, by an adversarial denoising network, an input image to acquire a reconstructed image; acquiring, by a target classification model, a predicted category probability distribution of the reconstructed image; acquiring, by the target classification model, a predicted category probability distribution of the original input image; calculating an adversarial score of the input image, and determining the input image as an adversarial sample or a benign sample according to a threshold; outputting a category prediction result of the reconstructed image if the input image is determined as the adversarial sample; and outputting a category prediction result of the original input image if the input image is determined as the benign sample. A system for defending against an adversarial sample in image classification, and a data processing terminal are further provided.
G06K 9/62 - Méthodes ou dispositions pour la reconnaissance utilisant des moyens électroniques
G06F 18/213 - Extraction de caractéristiques, p. ex. en transformant l'espace des caractéristiquesSynthétisationsMappages, p. ex. procédés de sous-espace
G06F 18/214 - Génération de motifs d'entraînementProcédés de Bootstrapping, p. ex. ”bagging” ou ”boosting”
G06F 18/22 - Critères d'appariement, p. ex. mesures de proximité
G06F 18/2415 - Techniques de classification relatives au modèle de classification, p. ex. approches paramétriques ou non paramétriques basées sur des modèles paramétriques ou probabilistes, p. ex. basées sur un rapport de vraisemblance ou un taux de faux positifs par rapport à un taux de faux négatifs
A low turn-on voltage GaN diode having an anode metal with a consistent crystal orientation and a preparation method thereof. The low turn-on voltage GaN diode having an anode metal with a consistent crystal orientation provided by the present disclosure includes a substrate layer, a GaN buffer layer, a GaN channel layer and an AlGaN barrier layer, which are arranged in sequence from bottom to top; a cathode arranged on the AlGaN barrier layer; a groove arranged in the GaN channel layer and the AlGaN barrier layer, and an anode provided on a bottom and a side wall of the groove and part of the AlGaN barrier layer; a dielectric layer provided on an uncovered portion of the AlGaN barrier layer; wherein, a contact portion of the anode with the groove and the AlGaN barrier layer is W or Mo metal with a crystal orientation of <100>.
H01L 29/20 - Corps semi-conducteurs caractérisés par les matériaux dont ils sont constitués comprenant, à part les matériaux de dopage ou autres impuretés, uniquement des composés AIIIBV
H01L 29/205 - Corps semi-conducteurs caractérisés par les matériaux dont ils sont constitués comprenant, à part les matériaux de dopage ou autres impuretés, uniquement des composés AIIIBV comprenant plusieurs composés dans différentes régions semi-conductrices
H01L 21/02 - Fabrication ou traitement des dispositifs à semi-conducteurs ou de leurs parties constitutives
H01L 21/285 - Dépôt de matériaux conducteurs ou isolants pour les électrodes à partir d'un gaz ou d'une vapeur, p. ex. condensation
H01L 21/306 - Traitement chimique ou électrique, p. ex. gravure électrolytique
H01L 21/3213 - Gravure physique ou chimique des couches, p. ex. pour produire une couche avec une configuration donnée à partir d'une couche étendue déposée au préalable
H01L 29/66 - Types de dispositifs semi-conducteurs
Method for encoding and decoding, in a bitstream, point attributes associated to a point of a point cloud, as well as an encoder and a decoder. The method of encoding comprises: For a point P to be encoded to the bitstream determining a predictor list of k predictor points of the point cloud including points of the point cloud nearest to the point P to be encoded which are selected according to their relative position to each other; and Encoding the point attributes associated to the point P to be encoded by predictive encoding based on attributes of the predictor points of the predictor list.
H04N 19/169 - Procédés ou dispositions pour le codage, le décodage, la compression ou la décompression de signaux vidéo numériques utilisant le codage adaptatif caractérisés par l’unité de codage, c.-à-d. la partie structurelle ou sémantique du signal vidéo étant l’objet ou le sujet du codage adaptatif
64.
METHOD FOR TRAINING SMT PRINTING PARAMETER OPTIMIZATION MODEL, DEVICE, AND STORAGE MEDIUM
A method for training an SMT printing parameter optimization model, a device, and a storage medium. The method comprises: receiving initial production data; performing influencing factor reconstruction according to the initial production data to obtain an influencing factor data packet; loading an optimization model to be trained; and training said optimization model according to the influencing factor data packet to obtain a trained optimization model.
G06F 30/27 - Optimisation, vérification ou simulation de l’objet conçu utilisant l’apprentissage automatique, p. ex. l’intelligence artificielle, les réseaux neuronaux, les machines à support de vecteur [MSV] ou l’apprentissage d’un modèle
65.
METHOD FOR VEHICLE SPEED ESTIMATION USING MULTIPLE GEOMAGNETIC SENSORS
The present disclosure provides a method for vehicle speed estimation using multiple geomagnetic sensors, and mainly solves the problem of low accuracy of vehicle speed estimation in existing single-geomagnetic, dual-geomagnetic and multi-geomagnetic scenarios. There are M vehicle detection modules (1), and the vehicle detection modules are deployed along a roadside at equal intervals and configured to detect processes that a vehicle approaches and leaves a detection point, record the time when the vehicle approaches the detection point and send time data to a data processing module (2). In order to avoid the situation that the vehicle detection modules do not detect the vehicle and may not perform, vehicle speed estimation, the data processing module (2) performs matching of data association on the time data uploaded by all the vehicle detection modules by using standard deviations of vehicle position estimation and speed estimation, and performs multiple Kalman filter iterations on the matched time data and the positions of the vehicle detection modules, so as to obtain a precise vehicle speed. The present disclosure improves the accuracy of vehicle speed estimation, and may be used for intelligent transportation management.
The present disclosure provides a hybrid decision-making method for autonomous driving, including the following steps: acquiring real-time traffic environment information of an autonomous vehicle during the running at a current moment; establishing a local decision-making model for autonomous driving based on the traffic environment information; based on the local decision-making model for autonomous driving, learning, by using a method based on deep reinforcement learning, a driving behavior of the autonomous vehicle, and extracting driving rules; sharing the driving rules; augmenting an existing expert system knowledge base; and determining whether there is an emergency: if yes, making a decision by using a machine learning model; and if not, adjusting the machine learning model based on the augmented existing expert system knowledge base, and making a decision by the machine learning model. The decision-making method uses two existing policies to complement each other to overcome the shortcomings of a single policy, thereby making decisions effectively for different driving scenarios.
Hierarchical network operation and resource control system and method for a mega satellite constellation, belonging to the field of spatial information technology, are provided. The hierarchical network operation and resource control system includes a service layer, a global organization layer, a local coordination layer and a resource layer. The service layer is used as an input to drive operation of whole system. The global organization layer is to realize “operation, measurement and control” integrated control and decision of whole network. The local coordination layer is to realize local management decision and management slice generation. The resource layer is to provide physical resource and physical device and realize resource virtualization. By deploying local coordination layer controllers on GSO or MEO satellites, the deployment of local coordination layer controllers is not limited by inability of deploying ground stations globally and therefore the control of large-scale LEO satellite constellation can be achieved.
H04B 7/00 - Systèmes de transmission radio, c.-à-d. utilisant un champ de rayonnement
H04B 7/08 - Systèmes de diversitéSystèmes à plusieurs antennes, c.-à-d. émission ou réception utilisant plusieurs antennes utilisant plusieurs antennes indépendantes espacées à la station de réception
Lightweight inter-satellite handover device and method for a mega LEO satellite network are provided. An attribute extraction sub-module extracts attributes of handover users in a user information storage unit. Based on the attributes of the handover users, a cluster sub-module clusters the handover users into user clusters. A decision set generator sub-module generates target satellite sets of the user clusters, determines each target satellite of the target satellite sets of the user clusters of each LEO satellite whether belongs to LEO satellites in a management domain of a handover decision point of managing the LEO satellite based on management domain information in a LEO satellite information storage unit, and if YES, performing inter-satellite handover by a centralized decision unit, otherwise performing inter-satellite handover by a distributed decision unit. Therefore, lightweight inter-satellite handover is achieved, cost of handover decision is reduced, and resource utilization of LEO satellite is increased.
A blockchain-based federated learning method and apparatus. The method comprises: a first node trains an ith-round local model on the basis of local training data to determine gradient information of the trained (i+1)th-round local model (202), respectively clips and quantizes each piece of first sub-gradient information in the gradient information of the (i+1)th-round local model on the basis of gradient clipping and quantization rules to obtain each piece of second sub-gradient information (203), merges every m pieces of second sub-gradient information among all pieces of second sub-gradient information according to a gradient merging rule to obtain n types of third sub-gradient information (204), and performs homomorphic encryption on the n types of third sub-gradient information to obtain n types of ciphertexts (205), and sends the n types of ciphertexts to a blockchain (206). Because each piece of first sub-gradient information in the gradient information of the local model is respectively clipped, quantized and merged, and then homomorphic encryption is performed thereon, computing resource consumption generated by the homomorphic encryption can be reduced, and network resources consumed in the ciphertext transmission process can be reduced.
An image finding method, a blockchain, a cloud server and an image finding apparatus, which relate to the field of Fintech. The method comprises: a blockchain receiving an image query request, which is sent by a query party, wherein the image query request comprises an encrypted query vector; the blockchain finding, from encrypted indexes stored on a chain, a target encrypted index vector which matches the encrypted query vector, wherein each encrypted index comprises an encrypted index vector and a hash value; the blockchain sending index information to a cloud server and receiving a target ciphertext image, which is sent by the cloud server; and the blockchain checking whether a first hash value corresponding to the target ciphertext image is consistent with a second hash value corresponding to the target encrypted index vector, and writing a checking result into the chain. Depending on the advantage of decentralization of a blockchain, all encrypted indexes stored on the chain can be found, such that the defect of a cloud server incompletely retrieving ciphertext images can be overcome. In addition, on the basis that the blockchain checks a target ciphertext image, the problem whereby the cloud server tampers with the ciphertext images can be overcome.
Disclosed in the present invention is a semiconductor doping method based on a ferroelectric material, which method is mainly used for solving the problems of an existing doping method having low precision and poor uniformity, and lattice damage to a semiconductor material. An implementation solution thereof is: 1) using a gas containing different ferroelectric elements as a precursor, and growing a layer of a corresponding ferroelectric material having a thickness of 5-15 nm on a semiconductor substrate by using an atomic layer deposition process; 2) using different metal target materials, and growing a layer of a corresponding metal electrode having a thickness of 50-100 nm on the ferroelectric material by using a magnetron sputtering process; and 3) applying a positive pulse voltage or a negative pulse voltage to the metal electrode, so as to control the remaining polarization charges of the ferroelectric material to induce corresponding electrons or holes in the semiconductor substrate, thereby completing the doping of a semiconductor. By means of the present invention, the doping precision, the doping uniformity and the doping concentration of a semiconductor material are improved, lattice damage to the semiconductor material is avoided, and the method can be applied to the preparation of microelectronic devices.
H01L 21/225 - Diffusion des impuretés, p. ex. des matériaux de dopage, des matériaux pour électrodes, à l'intérieur ou hors du corps semi-conducteur, ou entre les régions semi-conductricesRedistribution des impuretés, p. ex. sans introduction ou sans élimination de matériau dopant supplémentaire en utilisant la diffusion dans ou hors d'un solide, à partir d'une ou en phase solide, p. ex. une couche d'oxyde dopée
H01L 21/24 - Formation d'alliages d'impuretés, p. ex. des matériaux de dopage, des matériaux pour électrodes, avec un corps semi-conducteur
A method and apparatus for querying spatial text. The method comprises: a cloud server acquiring first query ciphertext which is sent by a user end, wherein the first query ciphertext comprises first query spatial vector ciphertext and first query hybrid vector ciphertext, with the first query spatial vector ciphertext being generated according to a spatial query condition in a query request and the first query hybrid vector ciphertext being generated according to a text query condition and the spatial query condition in the query request; retrieving a first node from a ciphertext index tree according to the first query spatial vector ciphertext; and according to the first query hybrid vector ciphertext and hybrid vector ciphertext of a leaf node under the first node, determining a second node that meets the text query condition. A query result is prevented from being affected by a weight, such that the query result is within a query range; and the problem of the query result being too far from a query position is prevented, thereby improving the accuracy of a spatial text query, and improving the query experience of a user.
SHANDONG ACADEMY OF AGRICULTURAL MACHINERY SCIENCE (Chine)
XIDIAN UNIVERSITY (Chine)
Inventeur(s)
Chen, Gang
Wang, Weidong
Sun, Yitian
Shen, Jingxin
Abrégé
A garlic clove identification and adjustment apparatus, and an adjustment method. The adjustment apparatus comprises a frame (1), a straightening and conveying mechanism, a detection mechanism (6), an orientation adjustment mechanism and a seed dropping tube (11). The straightening and conveying mechanism, the orientation adjustment mechanism and the seed dropping tube (11) are sequentially arranged on the frame (1), the detection mechanism (6) is arranged on the straightening and conveying mechanism, the straightening and conveying mechanism is in communication with the orientation adjustment mechanism by means of a conveying piece, and the seed dropping tube (11) is arranged below the orientation adjustment mechanism.
2 film is formed by a low temperature atomic layer deposition process. This disclosure also provides a method for preparing the package structure for a semiconductor device.
C23C 16/455 - Revêtement chimique par décomposition de composés gazeux, ne laissant pas de produits de réaction du matériau de la surface dans le revêtement, c.-à-d. procédés de dépôt chimique en phase vapeur [CVD] caractérisé par le procédé de revêtement caractérisé par le procédé utilisé pour introduire des gaz dans la chambre de réaction ou pour modifier les écoulements de gaz dans la chambre de réaction
H01L 21/02 - Fabrication ou traitement des dispositifs à semi-conducteurs ou de leurs parties constitutives
H01L 21/48 - Fabrication ou traitement de parties, p. ex. de conteneurs, avant l'assemblage des dispositifs, en utilisant des procédés non couverts par l'un uniquement des groupes ou
H01L 21/52 - Montage des corps semi-conducteurs dans les conteneurs
75.
Material structure for low thermal resistance silicon-based gallium nitride microwave and millimeter-wave devices and manufacturing method thereof
A material structure for silicon-based gallium nitride microwave and millimeter-wave devices and a manufacturing method thereof are provided. The material structure includes: a silicon substrate; a dielectric layer of high thermal conductivity, disposed on an upper surface of the silicon substrate, and an uneven first patterned interface being formed between the dielectric layer and the silicon substrate; a buffer layer, disposed on an upper surface of the dielectric layer, and an uneven second patterned interface being formed between the buffer layer and the dielectric layer; a channel layer, disposed on an upper surface of the buffer layer; and a composite barrier layer, disposed on an upper surface of the channel layer. In the material structure, the uneven patterned interfaces increase contact areas of the interfaces, a thermal boundary resistance and a thermal resistance of device are reduced, and a heat dissipation performance of device is improved.
H01L 29/20 - Corps semi-conducteurs caractérisés par les matériaux dont ils sont constitués comprenant, à part les matériaux de dopage ou autres impuretés, uniquement des composés AIIIBV
H01L 23/367 - Refroidissement facilité par la forme du dispositif
H01L 23/373 - Refroidissement facilité par l'emploi de matériaux particuliers pour le dispositif
H01L 29/06 - Corps semi-conducteurs caractérisés par les formes, les dimensions relatives, ou les dispositions des régions semi-conductrices
H01L 29/778 - Transistors à effet de champ avec un canal à gaz de porteurs de charge à deux dimensions, p.ex. transistors à effet de champ à haute mobilité électronique HEMT
A multi-geomagnetic sensor speed measurement system comprises a geomagnetic vehicle detection module, a data transmission module, a data reception module and a backend data processing module. When measuring, the geomagnetic vehicle detection module collects the geomagnetic data when the vehicle passes and processes it to obtain temporal data; the backend processing module receives the data for data cleaning; the backend processing module selects the reference sensors and opens individual time windows; the backend processing module processes the temporal data based on the number of temporal data in the time window; in the case of duplicate-detection, a measurement threshold δ is set and the temporal data is merged based on the threshold δ; in the case of mis-detection, the data is interpolated to make up for the mis-detection; based on the alignment result, a minimum variance method is used to estimate the speed of the vehicle.
A distributed support vector machine privacy-preserving method includes: dividing a secret through secret sharing among all participating entities, iteratively exchanging a part of the information divided by the participating entities, and solving sub-problems locally; performing an iteration until a convergence is reached to find a global optimal solution; and in consideration of the generality of the privacy-preserving method, adopting a privacy-preserving method based on a vertical data distribution and a privacy-preserving method based on a horizontal data distribution, respectively; wherein the participating entities do not trust each other, and interact through a multi-party computation for local training. The method is applied to an honest-but-curious scenario, and uses the idea of data division to perform local computation through the interaction of part of the data among users to finally reconstruct the secret to preserve data privacy.
A method for joint optimization of resource allocation includes: obtaining network data volumes of two services; obtaining queue statuses at a time t; computing sub-channel slices; computing a local CPU speed scaling, a user association, a sub-carrier assignment, and a power allocation of service 1; computing a user association, a video quality decision, and a sub-carrier assignment of service 2; obtaining an initial sub-carrier assignment and an initial power allocation; obtaining the user association; obtaining the power allocation and the sub-carrier assignment of service 1; obtaining the video quality decision; obtaining the sub-carrier assignment of service 2; obtaining an optimal data transmission rate and the user association to obtain a data rate allocation; and obtaining an optimal CPU speed scaling, an optimal user association, an optimal sub-carrier assignment, an optimal power allocation, an optimal video quality decision and an optimal sub-channel allocation.
H04L 12/873 - Ordonnancement selon la bande passante
H04L 47/52 - Ordonnancement selon la bande passante des files d'attente
H04L 5/00 - Dispositions destinées à permettre l'usage multiple de la voie de transmission
H04N 21/647 - Signalisation de contrôle entre des éléments du réseau et serveur ou clientsProcédés réseau pour la distribution vidéo entre serveur et clients, p. ex. contrôle de la qualité du flux vidéo en éliminant des paquets, protection du contenu contre une modification non autorisée dans le réseau ou surveillance de la charge du réseau ou réalisation d'une passerelle entre deux réseaux différents, p. ex. entre réseau IP et réseau sans fil
H04W 72/0453 - Ressources du domaine fréquentiel, p. ex. porteuses dans des AMDF [FDMA]
79.
Trusted graph data node classification method, system, computer device and application
A trusted graph data node classification method includes: (1) inputting a topological graph and node features, and calculating a discrete Ricci curvature of the discrete topological graph; (2) preprocessing the curvature and the node features; (3) mapping the curvature, reconstructing original features, and performing a semi-supervised training on graph data containing adversarial examples; and (4) performing a classification on unlabeled nodes. The new method uses a discrete curvature to extract topological information, and uses a residual network to reconstruct node feature vectors without knowing the technical details of the adversarial examples, and without using a large number of adversarial examples for adversarial training. Hence, the system effectively defends against attacks from adversarial examples on the graph data, outperforms the existing mainstream models in terms of accuracy when used in data without adversarial examples, and is thus a trusted node classification system.
A piezoelectric transducer is provided herein, comprising a three-dimensional structure made of a plurality of peptides, the peptides being self-assembling and the structure being piezoelectric, wherein at least a portion, or each, of said plurality of peptides comprises peptides of 2 to 10 amino acid residues, provided that the plurality of peptides is not consisted of a plurality of Phe-Phe dipeptides. Further described herein are peptides having an amino acid sequence Hyp-Phe-Phe, Boc-Dip-Dip, (L)Trp-(D)Trp or (D)Trp-(L)Trp, as well as three-dimensional structures comprising such peptides.
A pathological section analyzer with a large field of view, a high throughput and a high resolution. The pathological section analyzer comprises a lighting module (1), which is used for generating monochromatic light; a pathological section fixing module (2), which is used for fixing and adjusting the position of a pathological section, such that the pathological section is located at an imaging view position; a data collection module (3), which is used for collecting interference image information formed by scattered light that carries wavefront information and is obtained after the monochromatic light pass through the pathological section, and transmitted light that does not carry pathological section information; and a control processing module (4), which is used for performing image reconstruction on the interference image information so as to obtain a reconstructed image, and analyzing the reconstructed image on the basis of a pre-trained pathological section analysis model, so as to obtain an analysis result for the pathological section. The imaging view of the pathological section analyzer is hundreds of times greater than that of a traditional optical microscope, there is no need to stain a pathological section, and the pathological condition is analyzed by using a deep learning network, and therefore, the analysis process for the pathological section is simplified.
G16H 30/20 - TIC spécialement adaptées au maniement ou au traitement d’images médicales pour le maniement d’images médicales, p. ex. DICOM, HL7 ou PACS
82.
REFLECTOR ANTENNA BASED ON THREE TELESCOPIC ROD DRIVES AND QUASI-GEODETIC GRID STRUCTURE
The present application provides a reflector antenna based on three telescopic rod drives and a quasi-geodetic grid structure, comprising a support back frame, a reflector frame, a vertical connecting rod, a main reflector, a secondary reflector, a radial support rod, a feed source and an attitude control device. The support back frame and the reflector frame have a parabolic truss structure. The support back frame and the reflector frame are connected by means of the vertical connecting rod; the main reflector is fixed on quasi-geodetic grids of the reflector frame; the secondary reflector is fixed at a focal position of the main reflector; the feed source is fixed at a vertex position of the reflector frame; and the attitude control device comprises a base and telescopic rods.
H01Q 15/16 - Surfaces réfléchissantesStructures équivalentes courbes suivant deux dimensions, p. ex. paraboloïdales
H01Q 19/18 - Combinaisons d'éléments actifs primaires d'antennes avec des dispositifs secondaires, p. ex. avec des dispositifs quasi optiques, pour donner à une antenne une caractéristique directionnelle désirée utilisant des surfaces réfléchissantes comportant plusieurs surfaces réfléchissantes
The present disclosures discloses a method of target feature extraction based on millimeter-wave radar echo, which mainly solves the problems that techniques in the prior art cannot fully utilize raw radar echo information to obtain more separable features and cannot accurately distinguish targets with similar physical shapes and motion states. The method is implemented as follows: acquiring measured data of targets, generating an original RD map, and removing ground clutter of the map; sequentially performing target detection, clustering and centroid condensation on the RD map after the ground clutter removal; acquiring a continuous multi-frame RD maps and carrying out the target tracking; according to the tracking trajectory, selecting candidate areas and extracting features based on a single piece of RD map and features based on two successive RD maps, respectively.
G01S 7/41 - Détails des systèmes correspondant aux groupes , , de systèmes selon le groupe utilisant l'analyse du signal d'écho pour la caractérisation de la cibleSignature de cibleSurface équivalente de cible
84.
System and method for index modulation based joint mode frequency hopping with vortex electromagnetic waves for anti-jamming
A system and method of index modulation based joint mode frequency hopping with vortex electromagnetic waves for anti-jamming are provided. The system is additionally provided with a transmit signal carrier selector that provides diversified options, a receive signal carrier selector that is strictly synchronized with the transmit signal carrier selector, and a group of fast Fourier transformation modules to output a binary demodulation signal with jamming eliminated. The method includes: binary information division; index modulation and information modulation; information loading and hopping; information transmission, de-hopping, and jamming filtering; and calculation of the jamming probability and an average bit error rate. The present disclosure combines orbital angular momentum modes and subcarrier frequencies to form OAM mode-subcarrier frequency pair sets so as to diversify information transmission carriers, and performs simultaneously modulation and hopping to increase a spectrum efficiency and enhance the anti-jamming capability.
The embodiments of the present application provide an unstructured influence factor reconstruction method, apparatus and device for solder paste printing on an SMT production line, and a computer-readable storage medium. The method comprises: collecting original production data, so as to generate an original data set; performing feature interaction on influence factors in the original data set, so as to obtain an influence factor set; and converting the influence factor set into unstructured data, so as to obtain a reconstructed data packet. The relationship between the influence factors is established by means of the feature interaction, and structured data is then converted into unstructured data.
A method for encoding and decoding, an encoder (10) and decoder (20) for a point cloud is disclosed. The method for encoding a point cloud to generate a bitstream (14,26) of compressed point cloud data (12,28), wherein the point cloud's geometry is represented by an octree-based structure with a plurality of nodes having parent-child relationships by recursively splitting a volumetric space containing the point cloud into sub-volumes each associated with a node of the octree-based structure, comprising the steps of: determining a context information of a current node (120) including plane position context information, wherein the plane position context information of the current node (120) is determined according to the occupancy of a neighboring node (126) directly adjacent the current node (120) and the occupancy of at least one sibling node (134) having the same parent node (132) as the current node (120) (S110); and at least entropy encoding the occupancy parent node based on the determined context information to produce encode (S120).
H04N 19/597 - Procédés ou dispositions pour le codage, le décodage, la compression ou la décompression de signaux vidéo numériques utilisant le codage prédictif spécialement adapté pour l’encodage de séquences vidéo multi-vues
H04N 19/186 - Procédés ou dispositions pour le codage, le décodage, la compression ou la décompression de signaux vidéo numériques utilisant le codage adaptatif caractérisés par l’unité de codage, c.-à-d. la partie structurelle ou sémantique du signal vidéo étant l’objet ou le sujet du codage adaptatif l’unité étant une couleur ou une composante de chrominance
H04N 19/91 - Codage entropique, p. ex. codage à longueur variable ou codage arithmétique
H04N 19/96 - Codage au moyen d'une arborescence, p. ex. codage au moyen d'une arborescence quadratique
87.
Methods for preparing AlN based template having Si substrate and GaN based epitaxial structure having Si substrate
A method for preparing an AlN based template having a Si substrate and a method for preparing a GaN based epitaxial structure having a Si substrate are provided. The method for preparing the AlN based template having the Si substrate, which includes: providing the Si substrate; growing an AlN nucleation layer on the Si substrate; and introducing an ion passing through the AlN nucleation layer and into the Si substrate. After the AlN nucleation layer is prepared on the Si substrate, the ions are introduced into the Si substrate and the AlN nucleation layer through the AlN nucleation layer. In this way, types of the introduced ions can be expanded. In addition, a carrier concentration at an interface between the Si substrate and the AlN nucleation layer and a carrier concentration in the AlN nucleation layer can also be reduced.
H01L 21/00 - Procédés ou appareils spécialement adaptés à la fabrication ou au traitement de dispositifs à semi-conducteurs ou de dispositifs à l'état solide, ou bien de leurs parties constitutives
H01L 21/02 - Fabrication ou traitement des dispositifs à semi-conducteurs ou de leurs parties constitutives
88.
Method for enhancing network coverage based on adaptive generation of resource cell
t-1>ε is determined. Each access point is divided into a plurality of resource cells. A CU-DU network mapping table is generated. A middlehaul link of each of the plurality of resource cells is constructed according to the CU-DU network mapping table.
A CMOS structure and a preparation method for a FinFET CMOS, an FD CMOS and a GAA CMOS. The CMOS structure comprises an nMOS and a pMOS; the nMOS comprises a first channel region and a first gate electrode (30) provided on a semiconductor substrate (10); the pMOS comprises a second channel region and a second gate electrode (50) provided on the semiconductor substrate (10), wherein the first channel region and the second channel region are formed by semiconductor materials with the same conductivity type; and the first gate electrode (30) and the second gate electrode (50) are formed of conductive materials having the same work function. According to the CMOS structure, the process steps for preparing the CMOS are reduced, and the process flow is reduced, so that the process difficulty and the preparation cost can be reduced, and the performance and reliability of the CMOS and an integrated circuit thereof can be improved.
A method, base station and user equipment are provided for wireless communication. The method can include steps: transmitting data on a first frequency band; transmitting, on a second frequency band, a detection signal for detecting a channel condition of the second frequency band; generating channel condition information about the second frequency band based on the received detection signal; feeding back the channel condition information via the first frequency band; and selecting a current data transmission frequency band based at least in part on the feedback channel condition information about the second frequency band and/or traffic requirement information; wherein the current data transmission frequency band is any one of the first frequency band, the second frequency band or a cooperative transmission of the first frequency band with the second frequency band.
H04W 72/542 - Critères d’affectation ou de planification des ressources sans fil sur la base de critères de qualité en utilisant la qualité mesurée ou perçue
H04W 36/00 - Dispositions pour le transfert ou la resélection
H04L 5/00 - Dispositions destinées à permettre l'usage multiple de la voie de transmission
H04W 36/06 - Resélection d'une ressource de communication au point d'accès serveur
H04W 24/10 - Planification des comptes-rendus de mesures
91.
LOW THERMAL RESISTANCE GALLIUM NITRIDE ON SILICON MICROWAVE/MILLIMETER WAVE DEVICE MATERIAL STRUCTURE AND PREPARATION METHOD
A low thermal resistance gallium nitride on silicon microwave/millimeter wave device material structure and a preparation method. The device material structure comprises: a silicon substrate layer (1); a high thermal conductivity dielectric layer (2), located on the upper surface of the silicon substrate layer (1), wherein an uneven first patterned interface is formed between the high thermal conductivity dielectric layer (2) and the silicon substrate layer (1); a buffer layer (3), located on the upper surface of the high thermal conductivity dielectric layer (2), wherein an uneven second patterned interface is formed between the buffer layer (3) and the high thermal conductivity dielectric layer (2); a trench layer (4), located on the upper surface of the buffer layer (3); and a composite barrier layer (5), located on the upper surface of the trench layer (4). In the low thermal resistance gallium nitride on silicon microwave/millimeter wave device material structure, uneven patterned interfaces are formed between the high thermal conductivity dielectric layer and the silicon substrate layer and between the high thermal conductivity dielectric layer and the buffer layer, such that the contact area of the interfaces is increased and the thermal resistance of the interfaces is reduced, thus reducing the thermal resistance of the device and improving the heat dissipation performance of the device.
H01L 29/20 - Corps semi-conducteurs caractérisés par les matériaux dont ils sont constitués comprenant, à part les matériaux de dopage ou autres impuretés, uniquement des composés AIIIBV
92.
Non-fiber flat-panel breast diffusion optical tomography system
A breast diffusion optical tomography (DOT) device includes a light source, a detector, a mechanical driver and a contour acquisitor without using optical fiber and reduce the system complexity. The light source includes M1 number of multi-wavelength near-infrared light emitters for a continuous-wave mode and M2 number of laser diodes of different wavelengths for a frequency-domain mode. The detector includes N1 number of silicon photomultipliers for detecting near-infrared light in the continuous-wave mode and N2 number of silicon photomultipliers for detecting near-infrared light in the frequency-domain mode. The mechanical driver adjusts a distance between the light source and the detector. The contour acquisitor obtains the geometry of a patient's breast for reconstruction. The DOT device uses amplitude and phase information obtained in the frequency-domain mode to estimate initial optical parameters of tissues and then apply for reconstruction in the continuous-wave mode.
A method of constructing a high-performance anti-tampering database based on blockchain includes: acquiring change increment information corresponding to data to-be-stored through at least one of database nodes and storing the change increment information as bottom-layer data of all the database nodes based on a blockchain data structure; determining resultant data information based on the change increment information, indexing and then storing the resultant data information as top-layer data of all the database nodes; performing mutual-checks on stored top-layer data as per a predetermined mutual-checking period and performing self-checks on stored bottom-layer data as per a predetermined self-checking period, by the database nodes; and restoring the bottom-layer and/or top-layer data of the database nodes according to results of mutual-checks and self-checks, to realize database construction. Based on the two-layered database architecture, high reliability and high availability of data can be ensured, and anti-tampering performance can be improved.
G06F 16/22 - IndexationStructures de données à cet effetStructures de stockage
G06F 21/64 - Protection de l’intégrité des données, p. ex. par sommes de contrôle, certificats ou signatures
H04L 9/00 - Dispositions pour les communications secrètes ou protégéesProtocoles réseaux de sécurité
H04L 9/12 - Dispositifs de chiffrement d'émission et de réception synchronisés ou initialisés d'une manière particulière
H04L 9/32 - Dispositions pour les communications secrètes ou protégéesProtocoles réseaux de sécurité comprenant des moyens pour vérifier l'identité ou l'autorisation d'un utilisateur du système
94.
BLOCKCHAIN CONSTRUCTION METHOD AND SYSTEM, AND STORAGE MEDIUM, COMPUTER DEVICE AND APPLICATION
A blockchain construction method and system, and a storage medium, a computer device and an application. The method comprises: at the beginning of blockchain establishment, dividing a network into Q domains, specifying one leader node for each domain to participate in blockchain consensus, and the remaining nodes in the domain passively synchronizing a block on which consensus is achieved by the leader node (S101); and on the basis of a Raft consensus protocol of a verifiable random function, while generating a new block in each round, an accounting node of the present round randomly selecting an accounting node of the next round (S102). In the consensus process, the accounting of the next round is not generated by means of competition (such as a classic Pow consensus mechanism), but is randomly generated by an accounting node of the previous round and is publicly verifiable, so that the efficiency and security of consensus are improved. An accounting node of each round dynamically changes and has identity information hidden, so that the accounting node is prevented from being maliciously attacked, and the security and robustness of a blockchain system are ensured.
H04L 12/24 - Dispositions pour la maintenance ou la gestion
H04L 29/06 - Commande de la communication; Traitement de la communication caractérisés par un protocole
H04L 29/08 - Procédure de commande de la transmission, p.ex. procédure de commande du niveau de la liaison
H04L 9/32 - Dispositions pour les communications secrètes ou protégéesProtocoles réseaux de sécurité comprenant des moyens pour vérifier l'identité ou l'autorisation d'un utilisateur du système
95.
BLOCKCHAIN-BASED HIGH-PERFORMANCE TAMPER-PROOF DATABASE CONSTRUCTION METHOD
The present invention pertains to the technical field of blockchains, and discloses a blockchain-based high-performance tamper-proof database construction method. The construction method comprises: a double-layer database system structure based on a distributed peer-to-peer network; low-time complexity data self-checking and inter-node mutual checking methods; and a modular configurable system architecture. The invention solves the single-point-of-failure problem of traditional data systems, establishes an efficient B+ tree-based indexing structure, and eliminates the bottleneck of low query performance under traditional blockchain architectures. The method solves the problem of high-speed verification for big data, realizes data tamperproofing and deletion protection in double-layer database architectures, and meets the demand of enterprises for trusted storage of sensitive data. The invention realizes customizability and scalability of system functions, meets various security requirements of different service scenarios, and reduces the cost of actual deployment processes for the enterprises. The present invention realizes data tamperproofing and deletion protection in double-layer database architectures, and achieves customizability and scalability of system functions.
H01L 21/02 - Fabrication ou traitement des dispositifs à semi-conducteurs ou de leurs parties constitutives
H01L 21/04 - Fabrication ou traitement des dispositifs à semi-conducteurs ou de leurs parties constitutives les dispositifs ayant des barrières de potentiel, p. ex. une jonction PN, une région d'appauvrissement ou une région de concentration de porteurs de charges
H01L 29/165 - Corps semi-conducteurs caractérisés par les matériaux dont ils sont constitués comprenant, mis à part les matériaux de dopage ou autres impuretés, seulement des éléments du groupe IV de la classification périodique, sous forme non combinée comprenant plusieurs des éléments prévus en dans différentes régions semi-conductrices
H01L 29/16 - Corps semi-conducteurs caractérisés par les matériaux dont ils sont constitués comprenant, mis à part les matériaux de dopage ou autres impuretés, seulement des éléments du groupe IV de la classification périodique, sous forme non combinée
97.
Bidirectional blocking monolithic heterogeneous integrated cascode-structure field effect transistor, and manufacturing method thereof
A bidirectional blocking monolithic heterogeneous integrated Cascode-structure field effect transistor, which mainly solves a problem that the existing monolithic heterogeneous integrated Cascode-structure field effect transistor has no reverse blocking characteristic. The field effect transistor includes a substrate, a GaN buffer layer, an AlGaN barrier layer and a SiN isolation layer, wherein an isolation groove is etched in the middle of the SiN isolation layer, a Si active layer is printed on the SiN isolation layer on one side of the isolation groove so as to prepare a Si metal oxide semiconductor field effect transistor, and a GaN high-electron-mobility transistor is prepared on the other side of the isolation groove, and a drain electrode of the GaN high-electron-mobility transistor is in Schottky contact with the AlGaN barrier layer to form a bidirectional blocking monolithic heterogeneous integrated Cascode-structure field effect transistor.
H01L 29/778 - Transistors à effet de champ avec un canal à gaz de porteurs de charge à deux dimensions, p.ex. transistors à effet de champ à haute mobilité électronique HEMT
H01L 27/06 - Dispositifs consistant en une pluralité de composants semi-conducteurs ou d'autres composants à l'état solide formés dans ou sur un substrat commun comprenant des éléments de circuit passif intégrés avec au moins une barrière de potentiel ou une barrière de surface le substrat étant un corps semi-conducteur comprenant une pluralité de composants individuels dans une configuration non répétitive
H01L 27/088 - Dispositifs consistant en une pluralité de composants semi-conducteurs ou d'autres composants à l'état solide formés dans ou sur un substrat commun comprenant des éléments de circuit passif intégrés avec au moins une barrière de potentiel ou une barrière de surface le substrat étant un corps semi-conducteur comprenant uniquement des composants semi-conducteurs d'un seul type comprenant uniquement des composants à effet de champ les composants étant des transistors à effet de champ à porte isolée
H01L 29/66 - Types de dispositifs semi-conducteurs
A method for preparing a SiC-based ohmic contact, comprising: selecting a SiC substrate; epitaxially growing graphene on the SiC substrate to form a graphene/SiC structure; depositing an Au film on the graphene of the graphene/SiC structure; forming a first transfer electrode pattern on the Au film by means of a first photoresist photolithography process; etching away, by using a wet etching process, the Au film not covered by the first transfer electrode pattern; etching away, by using a plasma etching process, the graphene not covered by the Au film; forming a second transfer electrode pattern on the SiC substrate by means of a second photoresist photolithography process; depositing an Au material on the Au film outside the second transfer electrode pattern; and lifting off the second transfer electrode pattern to form an Au electrode and performing annealing treatment. The graphene reduces the barrier to a SiC interface, and the specific contact resistivity of an ohmic contact reaches the order of 10-7-10-8.
H01L 29/16 - Corps semi-conducteurs caractérisés par les matériaux dont ils sont constitués comprenant, mis à part les matériaux de dopage ou autres impuretés, seulement des éléments du groupe IV de la classification périodique, sous forme non combinée
H01L 23/373 - Refroidissement facilité par l'emploi de matériaux particuliers pour le dispositif
99.
Dual-link wireless ad hoc network and security defense method in emergency scene
Disclosed is a dual-link wireless ad hoc network and a security defense method in an emergency scene, aiming at comprehensively improving its security defense capability. The method comprises: sending, by a source node, the secret key and other messages which are not security defense messages through the second link; detecting, by a destination node, abnormal messages from the acquired valid messages after matching with abnormal message feature library, filtering the abnormal messages out, and quickly broadcasting the features of new abnormal messages through the first link; checking, by a new node to be added to the network, the identity and hardware state, authorizing the new node without abnormality, and broadcasting the authorization result information through the first link; adding, by other nodes receiving the security defense messages, the features of the new abnormal messages to their own abnormal message feature library, and allowing the entry of the new node.
H04L 9/32 - Dispositions pour les communications secrètes ou protégéesProtocoles réseaux de sécurité comprenant des moyens pour vérifier l'identité ou l'autorisation d'un utilisateur du système
100.
VEHICLE TRAFFIC FLOW PREDICTION METHOD WITH MISSING DATA
A vehicle traffic flow prediction method with missing data is disclosed. The method includes the steps of inputting the topological structure of the traffic flow to be predicted, selecting a certain road section in the road network as the road section to be predicted, and determining the adjacent road section data set of the road section to be predicted by the spatial-temporal relationship between the observable data and the missing data. According to the nearest neighbor algorithm, the missing data in the data set of the adjacent road sections are filled to get the filled data set, and then the traffic flow data of the road sections to be predicted at the prediction time is obtained. The method can be used for efficiently predicting the vehicle traffic flow of a certain road section in the case of missing traffic flow data in the complex urban road network.
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