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Direct computation of multiconductor transmission line capacitance and charge distribution

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The Journal of China Universities of Posts and Telecommunications 2009年第5期16卷 119-124页

作者： XU Jun LU Ying-hua ZHANG Li-kun School of Electronic Engineering Beijing University of Posts and Telecommunications Beijing 100876 China The Translation Department of the second artillery Troops of pla Beijing 100820 China

The per-unit-length capacitance parameter of multiconductor transmission line （MTL） is commonly extracted with indirect matrix transform method, which is complex and time-consuming. To solve the problem, an improved method to directly compute the MTL capacitance is proposed, which can be applied in the transmission line structure with arbitrary shaped cross-section and arbitrary separate distance. This method imports voltage conversions and matrix operations to simplify the complexity, improves computational efficiency by about 600% with results as accurate as previous method. The novel method presents a clear charge distribution map of MTL, whereas precious method will experience a tortuous process to get charge distribution.

关键词： multiconductor transmission line capacitance matrix charge distribution

Explosive Ferroelectric Power Supply of Flux Compression Generator

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Journal of Beijing Institute of Technology 2007年第3期16卷 321-325页

作者：汪德武贺元吉谭惠民 School of Aerospace Science and Engineering Beijing Institute of Technology The second artillery Research academy

Useful electrical pulses of a few hundred kilowatts lasting for several microseconds can be obtained by the depolarization process of PZT95/5 ferroelectric ceramics. In this paper, taking account of the dielectric relaxation, and finite resistance, a new mathematical model of PZT95/5 ferroelectric ceramics subjected to normal-mode shock wave is suggested. Explosive shock wave techniques have also been used to investigate the response of PZT95/5 ferroelectric ceramics with inductive loads in experiments. The predictions from the model have a good agreement with observed results. In addition, an explosive ferroelectric generator composed of explosive shock wave generators, electric units, and additional capacitors is design to power small-size helical flux compression generators. The test results with the maximal output energy of up to 80 J are given and experimental results are also considered.

关键词： ferroelectric ceramics explosive shock wave flux compression generators

Research on Multi-robot Coordination Searching Ignition Sources Approach

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Journal of Harbin Institute of Technology(New Series) 2013年第2期20卷 50-54页

作者： Jun Li Wen-Long Song Pu-Cheng Zhou College Mechanical and Electrical Northeast Forestry University Dept. of Information Engineering Artillery Academy of PLA

For the purpose of study on forecasting forest fire behavior,a probability approach was presented to search ignition sources by multi-robot coordination. Firstly,the environment map is built based on Bayes rules. Then,the probability searching strategy based on the environment map was designed. Every grid of the searching area was assigned searching expectation value, and robots selected the grid with the highest expectation value as its searching target. The simulation results show the search time reduces greatly,which proves the feasibility and validity of the given algorithm under unknown fire condition.

关键词： fire-fighting robots Bayes rules multi-robot coordination

Flow Visualization of Supersonic Flow over a Finite Cylinder

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Chinese Physics Letters 2012年第8期29卷 156-159页

作者： WANG Deng-Pan ZHAO Yu-Xin XIA Zhi-Xun WANG Qing-Hua LUO Zhen-Bing Science and Technology on Scramjet Laboratory National University of Defense TechnologyHunan 410073 The Third Institute the Second Artillery Equipment AcademyBeijing 100085

The flow structures of a supersonic flow over a cylinder with a finite height are investigated using the method of flow visualization with nanoparticle-based planar laser scattering(NPLS),in a supersonic quiet wind tunnel at Ma=*** complex structures of shock waves and three-dimensional vortices in a supersonic flow over a finite cylinder are *** on the time correlation of NPLS images,the time-space evolutionary characteristics of the coherent structures in a supersonic flow over a finite cylinder are studied,and the evolutionary characteristics of the coherent structure in the flow direction are obtained,which are used to identify the model and rotation direction of shedding vortices.

关键词： cylinder flow coherent

Dual Attribute Adversarial Camouflage toward camouflaged object detection

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Defence Technology（防务技术） 2023年第4期22卷 166-175页

作者： Yang Wang Zheng Fang Yun-fei Zheng Zhen Yang Wen Tong Tie-yong Cao Institute of Command and Control Engineering Peoples Liberation Army Engineering UniversityNanjing210007China The Army artillery and Defense academy of pla Nanjing210007China pla University of Foreign Language Luoyang471000China

The object detectors can precisely detect the camouflaged object beyond human *** investigations reveal that the CNNs-based(Convolution Neural Networks)detectors are vulnerable to adversarial *** works can fool detectors by crafting the adversarial camouflage attached to the object,leading to wrong *** is hard for military operations to utilize the existing adversarial camouflage due to its conspicuous *** by this,this paper proposes the Dual Attribute Adversarial Camouflage(DAAC)for evading the detection by both detectors and *** DAAC includes two steps:(1)Extracting features from a specific type of scene to generate individual soldier digital camouflage;(2)Attaching the adversarial patch with scene features constraint to the individual soldier digital camouflage to generate the adversarial attribute of *** visual effects of the individual soldier digital camouflage and the adversarial patch will be improved after integrating with the scene *** results show that objects camouflaged by DAAC are well integrated with background and achieve visual concealment while remaining effective in fooling object detectors,thus evading the detections by both detectors and humans in the digital *** work can serve as the reference for crafting the adversarial camouflage in the physical world.

关键词： Adversarial camouflage Digital camouflage generation Visual concealment Object detection Adversarial patch

Artificial emotion model based on reinforcement learning mechanism of neural network

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The Journal of China Universities of Posts and Telecommunications 2011年第3期18卷 105-109页

作者： SHI Xue-fei WANG Zhi-liang PING An ZHANG Li-kun School of Information Engineering University of Science and Technology Beijing Beijing 100083 China The Translation Group of the Certain Department of the second artillery of pla Beijing 100015 China

A hierarchical-processed frame construction of artificial emotion model for intelligent system is proposed in the paper according to the basic conclusion of emotional psychology. The general method of emotion processing, which considers only one single layer, has been changed in the presented construction. An artificial emotional development model is put forward based on reinforcement learning mechanism of neural network. The new model takes the emotion itself as reinforcement signal and describes its different influences on action learning efficiency corresponding to different individualities. In the end, simulation result based on child playmate robot is discussed and the effectiveness of the model is verified.

关键词： artificial emotion model reinforcement learning hierarchical structure neural network

Rapid identification of single constant contaminant source by considering characteristics of real sensors

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Journal of Central South University 2012年第3期19卷 593-599页

作者：蔡浩李先庭孔令娟马晓钧邵晓亮 Department of Building Science School of ArchitectureTsinghua University Engineering Institute of Engineering Corps PLA University of Science&Technology Nanjing artillery academy

For the release of hazardous contaminant indoors, source identification is critical for developing effective response measures. A method which can quickly and accurately identify the position, emission rate, and release time of a single constant contaminant source by using real sensors was presented. The method was numerically demonstrated and validated by a case study of contaminant release in a three-dimensional office. The effects of the measurement errors and total sampling period of sensor on the performance of source identification were thoroughly studied. The results indicate that the adverse effects of the measurement errors can be mitigated by extending the total sampling period. For reaching a desirable accuracy of source identification, the total sampling period should exceed a certain threshold, which can be determined by repeatedly running the identification method tmtil the results tend to be stable. The method presented can contribute to develop an onsite source identification system for protecting occupants from indoor releases.

关键词： source identification contaminant source indoor environment computational fluid dynamics (CFD) air distribution

QPSO-based algorithm of CSO joint infrared super-resolution and trajectory estimation

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Journal of Systems Engineering and Electronics 2011年第3期22卷 405-411页

作者： Liangkui Lin Hui Xu Dan Xu Wei An Kai Xie School of Electronics and Engineering National University of Defense TechnologyChangsha 410073P.R.China Unit 94810 of the pla Nanjing 210007P.R.China artillery academy of the pla Hefei 230031P.R.China

The midcourse ballistic closely spaced objects（CSO） create blur pixel-cluster on the space-based infrared focal plane,making the super-resolution of CSO quite necessary.A novel algorithm of CSO joint super-resolution and trajectory estimation is *** algorithm combines the focal plane CSO dynamics and radiation models,proposes a novel least square objective function from the space and time information,where CSO radiant intensity is excluded and initial dynamics（position and velocity） are chosen as the model ***,the quantum-behaved particle swarm optimization（QPSO） is adopted to optimize the objective function to estimate model parameters,and then CSO focal plane trajectories and radiant intensities are ***,the estimated CSO focal plane trajectories from multiple space-based infrared focal planes are associated and filtered to estimate the CSO stereo ballistic ***,the performance（CSO estimation precision of the focal plane coordinates,radiant intensities,and stereo ballistic trajectories,together with the computation load） of the algorithm is tested,and the results show that the algorithm is effective and feasible.

关键词： super-resolution trajectory estimation closely spaced object(CSO) midcourse ballistic infrared focal plane quantumbehaved particle swarm optimization(QPSO).

Senktide blocks aberrant RTN3 interactome to retard memory decline and tau pathology in social isolated Alzheimer’s disease mice

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Protein & Cell 2024年第4期15卷 261-284页

作者： He-Zhou Huang Wen-Qing Ai Na Wei Ling-Shuang Zhu Zhi-Qiang Liu Chao-Wen Zhou Man-Fei Deng Wen-Tao Zhang Jia-Chen Zhang Chun-Qing Yang Ya-Zhuo Hu Zhi-Tao Han Hong-Hong Zhang Jian-Jun Jia Jing Wang Fang-Fang Liu Ke Li Qi Xu Mei Yuan Hengye Man Ziyuan Guo Youming Lu Kai Shu Ling-Qiang Zhu Dan Liu Department of Pathophysiology School of Basic MedicineTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430030China Department of Medical Genetics School of Basic MedicineTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430030China Department of Pathology The First Affiliated Hospital of Zhengzhou UniversityZhengzhou 450002China Department of Pathology School of Basic MedicineZhengzhou UniversityZhengzhou 450002China The second Affiliated Hospital Department of NeurologyHengyang Medical SchoolUniversity of South ChinaHengyang 421001China Beijing Key Laboratory of Aging and Geriatrics National Clinical Research Center for Geriatric DiseaseInstitute of GeriatricsChinese PLA General Hospital and Chinese PLA Medical AcademyBeijing 100853China Department of Neurosurgery Tongji HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430030China Department of Neurology Union HospitalHuazhong University of Science and TechnologyWuhan 430022China Department of Biology Boston UniversityBostonMA 02215USA Center for Stem Cell and Organoid Medicine(CuSTOM) Division of Developmental BiologyCincinnati Children’s Hospital Medical CenterCincinnatiOH 45229USA

Sporadic or late-onset Alzheimer’s disease(LOAD)accounts for more than 95%of Alzheimer’s disease(AD)cases without any family *** genome-wide association studies have identified associated risk genes and loci for LOAD,numerous studies suggest that many adverse environmental factors,such as social isolation,are associated with an increased risk of ***,the underlying mechanisms of social isolation in AD progression remain *** the current study,we found that 7 days of social isolation could trigger pattern separation impairments and presynaptic abnormalities of the mossy fibre-CA3 circuit in AD *** also revealed that social isolation disrupted histone acetylation and resulted in the downregulation of 2 dentate gyrus(DG)-enriched miRNAs,which simultaneously target reticulon 3(RTN3),an endoplasmic reticulum protein that aggregates in presynaptic regions to disturb the formation of functional mossy fibre boutons(MFBs)by recruiting multiple mitochondrial and vesicle-related ***,the aggregation of RTN3 also recruits the PP2A B subunits to suppress PP2A activity and induce tau hyperphosphorylation,which,in turn,further elevates RTN3 and forms a vicious ***,using an artificial intelligence-assisted molecular docking approach,we determined that senktide,a selective agonist of neurokinin3 receptors(NK3R),could reduce the binding of RTN3 with its ***,application of senktide in vivo effectively restored DG circuit disorders in socially isolated AD *** together,our findings not only demonstrate the epigenetic regulatory mechanism underlying mossy fibre synaptic disorders orchestrated by social isolation and tau pathology but also reveal a novel potential therapeutic strategy for AD.

关键词： Alzheimer’s disease memory impairment synaptic disorder tau pathology