Disclosed in the present invention is a multi-target tracking method based on multi-agent collaborative deep reinforcement learning, comprising: using a three-dimensional coordinate method to model an environment to obtain an environment model; acquiring input data on the basis of the environment model; and inputting the input data into a tracking model, and determining a tracking trajectory of a tracking target, wherein the tracking model is used for using a tracking agent to dynamically track position information of the tracking target in the environment model, taking environment feedback information and a current frame of position information of the tracking target at a ratio of 4:6 as input, taking the next frame of position information as output, and determining the tracking trajectory of the tracking target. According to the present invention, the tracking model is constructed on the basis of a twin neural network, the synergistic effect of multiple agents is fully exerted, and the environment feedback information is fully utilized, so that the tracking speed and accuracy of online tracking are effectively improved.
Disclosed in the present invention are an objective evaluation method and apparatus for online subjective test questions, and a medium. The method comprises: acquiring a subjective test question and an answer thereto, and decomposing the answer to the subjective test question to obtain answer steps; on the basis of the answer steps, setting at least one question solving space and at least one answer option, wherein each question solving space corresponds to one score; acquiring a character feature filled in by an examinee in the question solving space, and matching the character feature with the answer option, wherein if the matching result indicates that the two are consistent, the score corresponding to the question solving space is obtained, and if the matching result indicates that the two are inconsistent, a score of 0 is obtained for the question solving space; and accumulating the scores of all the problem solving spaces to obtain a score for the subjective test question. All question types are tested online, and paperless examinations are comprehensively popularized, such that the examination cost is reduced, the examination process is simplified, the examination efficiency is improved, fairness and impartiality are promoted, and serious examination discipline is ensured, thereby effectively realizing truly intelligent examinations for university mathematics.
The present invention relates to a benzodihydropyran compound which has the effects of countering hepatitis B virus and coronavirus, especially SARS-CoV-2, a preparation method therefor and uses thereof. Specifically, the present invention provides a preparation method for and uses of a compound as shown in formula I. The uses comprise the prevention, treatment or mitigation of hepatitis B virus infectious diseases and coronavirus infectious diseases. The compound provided by the present invention has strong activity against hepatitis B virus and coronavirus, especially SARS-CoV-2, and can be used as an active ingredient to prepare anti-hepatitis B virus or anti-coronavirus drugs or pharmaceutical compositions in conjunction with a pharmaceutically acceptable carrier or excipient.
KUNMING YI MEDICINE BIOTECHNOLOGY CO., LTD. (China)
Inventor
Huang, Xiangzhong
Li, Yanhong
Bai, Xishan
Li, Yuxiao
Li, Hongrui
Abstract
The present invention relates to a use of a diterpene compound phytol in the preparation of an anti-migraine drug. The phytol of the present invention may be a naturally occurring organic compound or a synthetic organic compound, has strong anti-migraine activity, and as an active ingredient, is used together with a pharmaceutically acceptable carrier or auxiliary material in the preparation of an anti-migraine drug or pharmaceutical composition.
Disclosed is a method for preparing a red luminescent material excited by blue light without using hydrofluoric acid, wherein the red luminescent material has a chemical composition of A2X1-yF6:yMn4+, wherein A is selected from at least one of the alkaline elements; X is selected from at least one of Ti, Si, Ge and Zr; y represents the mole percent coefficient of Mn4+ ions relative to X4+ ions, where 0
Palladium/silver co-catalyzed tandem reactions synthesis of phenylacetophenone derivatives by oxabenzonorbornadienes with terminal alkynes and their anti-tumor or anti-cancer activities
This invention relates to the quick and efficient synthesis of anti-tumor or anti-cancer compounds. More particularly, it relates to the quick and efficient synthesis of anti-tumor or anti-cancer compounds comprising phenylacetophenone derivatives using oxabenzonorbornadienes with terminal alkynes.
C07D 319/22 - 1,4-DioxanesHydrogenated 1,4-dioxanes condensed with carbocyclic rings or ring systems condensed with one naphthalene or hydrogenated naphthalene ring system
C07D 317/70 - Heterocyclic compounds containing five-membered rings having two oxygen atoms as the only ring hetero atoms having the hetero atoms in positions 1 and 3 ortho- or peri-condensed with carbocyclic rings or ring systems condensed with ring systems containing two or more relevant rings
A61K 31/357 - Heterocyclic compounds having oxygen as the only ring hetero atom, e.g. fungichromin having two or more oxygen atoms in the same ring, e.g. crown ethers, guanadrel
A61K 31/36 - Compounds containing methylenedioxyphenyl groups, e.g. sesamin
Provided is a preparation method for artificial rutile, comprising: performing modified treatment, acid purification and calcination on acid-soluble titanium slag and a modifier in a microwave reactor. By means of a microwave heating mode, the equipment investment needed by the method is low, and the energy consumption is low. The purity of artificial rutile is more than 91%, byproducts are fewer, and the environmental pollution is low.
Provided is a method for preparing rutile from acid-soluble titanium slag, comprising: grinding acid-soluble titanium slag; adding a sodium carbonate modifier, and performing microwave irradiation treatment in a microwave device; adding an ammonium bifluoride additive; and performing acid purification and calcination to obtain rutile. By means of a microwave heating mode, the equipment investment needed by the method is low, and the energy consumption is low. The purity of artificial rutile is more than 91%, byproducts are fewer, and the environmental pollution is low.
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