公开(公告)号：US20220294605A1

公开(公告)日：2022-09-15

申请号：US17517661

申请日：2021-11-02

申请人： University of Electronic Science and Technology of China ,  Yangtze Delta Region Institute (Huzhou), University of Electronic Science and Technology of China

发明人： Chunxiang XU ,  Changsong JIANG ,  Yicong DU

IPC分类号： H04L9/00 ,  H04L9/06

摘要： A blockchain-based public parameter generation method against backdoor attacks, includes: acquiring the hash values of L latest confirmed blocks on a blockchain, and the hash values of the L blocks and a count variable for generation are mapped to an element in a set G via a specified mapping to obtain the generated public parameter; L≥φ, φ is the minimum number to guarantee blockchains' chain quality property; checking whether the generated parameter meets the condition, if not, discarding the parameter and updating the generated public parameter; if the condition is met, outputting the public parameter to the device that uses the public parameter. In this disclosure, the public parameters are random, since they are based on the latest confirmed blocks on the blockchain and are guaranteed by the computational power of the blockchain; the generation of public parameters is publicly verifiable and random.

公开(公告)号：US20230129533A1

公开(公告)日：2023-04-27

申请号：US18145904

申请日：2022-12-23

申请人： YANGTZE DELTA REGION INSTITUTE (QUZHOU), UNIVERSITY OF ELECTRONIC SCIENCE AND TECHNOLOGY OF CHINA

发明人： Xiongbang WEI ,  Jiaxuan LIAO ,  Wei CHEN ,  Yuhong QIU ,  Xin LONG

IPC分类号： B01J23/44 ,  G01N33/00 ,  B01J21/06 ,  B01J35/00 ,  B01J37/04 ,  B01J37/00

摘要： A hydrogen sensitive film, a hydrogen sensor and a preparation thereof. The hydrogen sensitive film has a composite structure of an aerogel and a catalyst. The aerogel can adsorb hydrogen and undergo hydrogenation reaction with hydrogen. The catalyst is a nano-noble metal catalyst for catalyzing the hydrogenation reaction, and is distributed in pores of the aerogel. The hydrogen sensitive film is prepared by mixing a catalyst into an aerogel through physical compounding. The hydrogen sensor includes an insulating substrate layer, the hydrogen sensitive film and an electrode layer.

公开(公告)号：US20230122410A1

公开(公告)日：2023-04-20

申请号：US17683572

申请日：2022-03-01

申请人： University of Electronic Science and Technology of China

发明人： Hua FAN ,  Yilin LIU ,  Huichao YUE ,  Kai XU ,  Quanyuan FENG ,  Huaying SU ,  Guosong WANG

IPC分类号： H02M3/158 ,  H02M1/00 ,  H02M1/08

摘要： A DC-DC converter circuit with selectable working modes is disclosed. Compared with the traditional chip that works in one mode, the DC-DC converter with selectable working modes adds only a mode selection circuit, so that the chip can work in voltage control mode or current control mode. On the one hand, the applications of the chip are more extensive, and on the other hand, when the applications are different, the cost of developing a DC-DC converter with selectable working mode is greatly reduced compared with the traditional DC-DC converter.

公开(公告)号：US11620449B2

公开(公告)日：2023-04-04

申请号：US17024726

申请日：2020-09-18

申请人： University of Electronic Science and Technology of China

发明人： Jianping Li ,  Xiaofeng Gu ,  Jian Hu ,  Ruinan Sun ,  Wenting Feng ,  Shunli Li ,  Sheng Jiang

IPC分类号： G06F40/30 ,  G06N20/00 ,  G06F40/289 ,  G06F40/216 ,  G06F17/16 ,  G06K9/62

摘要： A method for machine reading comprehension includes: S1, obtaining a character-level indication vector of a question and a character-level indication vector of an article; S2, obtaining an encoded question vector and an encoded article vector; S3, obtaining an output P1 of a bidirectional attention model and an output P2 of a shared attention model; S4, obtaining an aggregated vector P3; S5, obtaining a text encoding vector P4; S6, obtaining global interaction information between words within the article; S7, obtaining a text vector P5 after using the self-attention model; S8, obtaining aggregated data P6 according to the text encoding vector P4 and the text vector P5; S9, obtaining a context vector of the article according to the aggregated data P6 and an unencoded article vector P; and S10, predicting an answer position according to the context vector of the article and the encoded question vector to complete the machine reading comprehension.

公开(公告)号：US20230051210A1

公开(公告)日：2023-02-16

申请号：US17881794

申请日：2022-08-05

申请人： Yangtze Delta Region Institute (Huzhou), University of Electronic Science and Technology of China

发明人： Fan DONG ,  Ye HE ,  Qin REN ,  Yanjuan SUN ,  Jianping SHENG

IPC分类号： G01N24/10

摘要： Disclosed is an in-situ vacuum reaction system for dynamically detecting defects, which includes an electron paramagnetic resonance spectrometer, an in-situ vacuum reaction chamber, a gas supply unit, a vacuum unit, an illumination unit, a temperature control unit and a mixing bottle, the in-situ vacuum reaction chamber is arranged inside a detection cavity of the electron paramagnetic resonance spectrometer, the gas supply unit is connected to the mixing bottle through a pipeline, and the mixing bottle is connected to a gas inlet of the in-situ vacuum reaction chamber through a pipeline, the vacuum unit is connected to the gas inlet of the in-situ vacuum reaction chamber through a pipeline, the illumination unit is arranged corresponding to a detachable window of the electron paramagnetic resonance spectrometer, and the temperature control unit is connected to the electron paramagnetic resonance spectrometer through a pipeline.

公开(公告)号：US11579474B2

公开(公告)日：2023-02-14

申请号：US17255438

申请日：2020-05-26

申请人： BOE Technology Group Co., Ltd. ,  University of Electronic Science and Technology of China

发明人： Xiaoxi Chen ,  Junrui Zhang ,  Mao Ye ,  Xuehui Zhu ,  Zhidong Wang ,  Pengwei Li ,  Lijia Zhou

IPC分类号： G02F1/133 ,  G02F1/01 ,  G02F1/139 ,  G02F1/29 ,  H04N5/232

摘要： Provided are a polarization imaging apparatus, a polarization imaging method, a controller and a computer readable storage medium. The polarization imaging apparatus includes an optical rotation device, a lens device, an image sensor, an image processor, and a controller which are sequentially arranged along a ray direction of incident light. The controller is configured to control the optical rotation device to be in a first optical rotation state or a second optical rotation state, control the lens device to be in an in-focus state or an out-of-focus state, and control the image sensor to collect light passing through the optical rotation device and the lens device to obtain multiple images. The image processor is configured to obtain polarized image information according to the multiple images.

公开(公告)号：US20220385323A1

公开(公告)日：2022-12-01

申请号：US17645318

申请日：2021-12-21

申请人： UNIVERSITY OF ELECTRONIC SCIENCE AND TECHNOLOGY OF CHINA

发明人： Xiaoning LI ,  Wei ZHOU ,  Zidong ZHANG ,  Xin FANG ,  Shijun SHEN ,  Dawei GONG ,  Dejie LI

IPC分类号： H04B1/16 ,  H04B1/00 ,  H04B1/44 ,  H04B1/04

摘要： A wireless single-phase AC-to-AC conversion circuit based on a 2.4G microwave includes a receiving antenna unit, a RF switch unit, a positive voltage rectification unit, a negative voltage rectification unit and an AC synthesis unit. An output port of the receiving antenna unit is connected to the common input port of the RF switch unit. A first microwave output end of the RF switch unit and a second microwave output end of the RF switch unit are correspondingly connected to a microwave input end of the positive voltage rectification unit and a microwave input end of the negative voltage rectification unit, respectively. ADC output end of the positive voltage rectification unit and a DC output end of the negative voltage rectification unit are correspondingly connected to a positive voltage input port of the AC synthesis unit and a negative voltage input port of the AC synthesis unit, respectively.

公开(公告)号：US20220351043A1

公开(公告)日：2022-11-03

申请号：US17448934

申请日：2021-09-27

申请人： Chongqing University ,  University of Electronic Science and Technology of China ,  Dibi (Chongqing) Intelligent Technology Research Institute Co., Ltd. ,  Star Institute of Intelligent Systems

发明人： Yongduan Song ,  Feng Yang ,  Rui Li ,  Shengtao Pan ,  Siyu Li ,  Yiwen Zhang ,  Jian Zhang ,  Zhengtao Yu ,  Shichun Wang

IPC分类号： G06N3/08 ,  G06N3/04

摘要： The present disclosure discloses an adaptive high-precision compression method and system based on a convolutional neural network model, and belongs to the fields of artificial intelligence, computer vision, and image processing. According to the method of the present disclosure, coarse-grained pruning is performed on a neural network model by using a differential evolution algorithm first, and the coarse-grained space is quickly searched through an entropy importance criterion and an objective function with good guidance to obtain a near-optimal neural network structure. Then fine-grained search space is built on the basis of an optimal individual obtained from the coarse-grained search, and fine-grained pruning is performed on the neural network model by a differential evolution algorithm to obtain a network model with an optimal structure. Finally, the performance of the optimal model is restored by using a multi-teacher multi-step knowledge distillation network to reach the precision of an original model.

公开(公告)号：US20220148301A1

公开(公告)日：2022-05-12

申请号：US17606751

申请日：2020-09-29

申请人： West China Hospital of Sichuan University ,  University of Electronic science and Technology of China

发明人： Na Hu ,  Su Lv ,  Shi Gu ,  Tianwei Zhang

IPC分类号： G06V10/82 ,  G06T3/40 ,  G06N3/04

摘要： This invention discloses an auxiliary diagnostic model and an image processing method for detecting acute ischemic stroke. This refers to the technical field of medical image processing. The technical essentials are described as follow: the presented deep-learning model is based on generative adversarial networks (GANs), comprising a generator (G) and a discriminator (D). G is the first three-dimensional convolutional neural network, used to synthesize realistic images from raw data, while D is the second three-dimensional convolutional neural network, used to classify images as real or fake (synthetic). The presented GAN model can learn the mapping relationship from non-enhanced computed tomography (NECT) images to T2-weighted fluid-attenuation inversion recovery (FLAIR) magnetic resonance imaging (MRI), then converting the raw CT to synthetic FLAIR with high sensitivity. This improves the efficiency of emergency scanning in acute ischemic stroke, reaching sensitivity that is poor in CT interpretation and immediacy that is limited in MRI examination.

公开(公告)号：US20220102542A1

公开(公告)日：2022-03-31

申请号：US17264521

申请日：2019-12-20

申请人： University of Electronic Science and Technology of China

发明人： Yuehang XU ,  Yan WANG ,  Yunqiu WU

IPC分类号： H01L29/778 ,  H01L23/14 ,  H01L29/66 ,  H01L29/20

摘要： The present disclosure provides a flexible microwave power transistor and a preparation method thereof. In view of great lattice mismatch and poor performance of a device prepared with a Si substrate in an existing preparation method, the preparation method of the present disclosure grows a gallium nitride high electron mobility transistor (GaN HEMT) layer on a rigid silicon carbide (SiC) substrate to avoid lattice mismatch between a silicon (Si) substrate and gallium nitride (GaN), improving performance of the flexible microwave power transistor. Moreover, in view of problems such as low output power, power added efficiency and power gain with the existing device preparation method, the present disclosure retains part of the rigid SiC substrate and grows a flexible substrates at room temperature to prepare a high-quality device. The present disclosure has greatly improved power output capability, efficiency and gain, and basically unchanged performance of device under 0.75% of stress.