检索结果-南通市图书馆

A game-theoretic approach for federated learning:A trade-off among privacy,accuracy and energy

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Digital Communications and Networks 2024年第2期10卷 389-403页

作者： Lihua yin Sixin Lin zhe Sun Ran Li Yuanyuan He Zhiqiang Hao Cyberspace Institute of Advanced Technology Guangzhou UniversityGuangzhou510006China School of Cyber Science and Engineering Huazhong University of Science and TechnologyWuhan430074China China Industrial Control Systems Cyber Emergency Response Team Beijing100040China

Benefiting from the development of Federated Learning(FL)and distributed communication systems,large-scale intelligent applications become *** devices not only provide adequate training data,but also cause privacy leakage and energy *** to optimize the energy consumption in distributed communication systems,while ensuring the privacy of users and model accuracy,has become an urgent *** this paper,we define the FL as a 3-layer architecture including users,agents and *** order to find a balance among model training accuracy,privacy-preserving effect,and energy consumption,we design the training process of FL as game *** use an extensive game tree to analyze the key elements that influence the players’decisions in the single game,and then find the incentive mechanism that meet the social norms through the repeated *** experimental results show that the Nash equilibrium we obtained satisfies the laws of reality,and the proposed incentive mechanism can also promote users to submit high-quality data in *** the multiple rounds of play,the incentive mechanism can help all players find the optimal strategies for energy,privacy,and accuracy of FL in distributed communication systems.

关键词： Federated learning Privacy preservation Energy optimization Game theory Distributed communication systems

Numerical modeling and experimental investigation of a two-phase sink vortex and its fluid-solid vibration characteristics

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of zhejiang University-Science A(Applied Physics & Engineering) 2024年第1期25卷 47-62页

作者： Zichao yin Yesha NI Lin LI Tong WANG Jiafeng WU zhe LI Dapeng TAN College of Mechanical Engineering Zhejiang University of TechnologyHangzhou310014China State Key Laboratory of Fluid Power and Mechatronic Systems Zhejiang UniversityHangzhou310058China

A sink vortex is a common physical phenomenon in continuous casting,chemical extraction,water conservancy,and other industrial processes,and often causes damage and loss in ***,the real-time monitoring of the sink vortex state is important for improving industrial production ***,its suction-extraction phenomenon and shock vibration characteristics in the course of its formation are complex mechanical dynamic factors for flow field state *** address this issue,we set up a multi-physics model using the level set method(LSM)for a free sink vortex to study the two-phase interaction ***,a fluid–solid coupling dynamic model was deduced to investigate the shock vibration characteristics and reveal the transition mechanism of the critical flow *** numerical results show that the coupling energy shock induces a pressure oscillation phenomenon,which appears to be a transient enhancement of vibration at the vortex penetration *** central part of the transient enhancement signal is a high-frequency *** on the dynamic coupling model,an experimental observation platform was established to verify the accuracy of the numerical *** water-model experiment results were accordant with the numerical *** above results provide a reference for fluid state recognition and active vortex control for industrial monitoring systems,such as those in aerospace pipe transport,hydropower generation,and microfluidic devices.

关键词： Free sink vortex Fluid-solid coupling Level set method(LSM) Multi-physics model Vibration characteristics

KLF4 Inhibits the Activation of Human Hepatic Stellate Cell In Vitro

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Current Medical Science 2024年第3期44卷 512-518页

作者： Xing-yu YANG zhe CHEN Jun TAN yin-kai XUE Hai zheNG Department of Emergency Surgery Union HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan430022China Department of Thoracic Surgery The First Affiliated Hospital of Xi’an Jiaotong UniversityXi’an710061China Department of Thoracic Surgery Union HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan430022China

Objective Hepatic stellate cells(HSCs)play a crucial role in liver ***-stage liver fibrosis is reversible and intimately associated with the state of ***-like factor 4(KLF4)plays a pivotal role in a wide array of physiological and pathological *** study aimed to investigate the effect of KLF4 on the proliferation,apoptosis and phenotype of quiescent HSCs Methods We designed a KLF4 lentiviral vector and a KLF4 siRNA lentiviral vector,to upregulate and silence KLF4 expression in human HSC LX-2 cells via *** proliferation was assessed using the CCK-8 *** cytometry was used to detect the cell cycle distribution and apoptosis *** blotting was used to determine the levels of some quiescence and activation markers of HSCs Results Overexpression of KLF4 significantly increased the levels of E-cadherin and ZO-1,which are quiescent HSC markers,while significantly decreased the levels of N-cadherin and a-SMA,known activated HSC *** contrast,cell proliferation and apoptosis rates were elevated in LX-2 cells in which KLF4 expression was silenced Conclusion KLF4 inhibits the proliferation and activation of human LX-2 *** might be a key regulatory protein in the maintenance of HSC quiescence and may serve as a target for the inhibition of hepatic fibrosis.

关键词： Kruppel-like factor 4 hepatic stellate cells LX-2 cells liver fibrosis

A nested partitioning-based solution method for seru scheduling problem with resource allocation

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Management Science and Engineering 2024年第1期9卷 101-114页

作者： zhe Zhang Kazuhiro Izui Xiaoling Song Yong yin Xue Gong School Economics&Management Nanjing University of Science and TechnologyNanjing210094China Department of Mechanical Engineering and Science Kyoto UniversityKyoto615-8540Japan Graduate School of Business Doshisha UniversityKarasuma-ImadegawaKamigyo-kuKyoto602-8580Japan

This paper investigates the production scheduling problems of allocating resources and sequencing jobs in the seru production system(SPS).As a new-type manufacturing mode arising from Japanese production practices,seru production can achieve efficiency,flexibility,and responsiveness *** production environment in which a set of jobs must be scheduled over a set of serus according to due date and different execution modes is considered,and a combination optimization model is *** by the problem complexity and the characteristics of the proposed seru scheduling model,a nested partitioning method(NPM)is designed as the solution ***,computational studies are conducted,and the practicability of the proposed seru scheduling model is ***,the efficiency of the nested partitioning solution method is demonstrated by the computational results obtained from different scenarios,and the good scalability of the proposed approach is proven via comparative analysis.

关键词： Seru production system Scheduling Combination optimization model Nested partitioning method Resource allocation

Optical modification of nonlinear crystals for quasi-parametric chirped-pulse amplification

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Fundamental Research 2024年第1期4卷 43-50页

作者： Qian Lin Jingui Ma zhe yin Peng Yuan Jing Wang Guoqiang Xie Liejia Qian Key Laboratory for Laser Plasmas(MOE) Collaborative Innovation Center of IFSASchool of Physics and AstronomyShanghai Jiao Tong UniversityShanghai 200240China Tsung-Dao Lee Institute Shanghai Jiao Tong UniversityShanghai 200240China

Quasi-parametric chirped-pulse amplification(QPCPA),which features a theoretical peak power much higher than those obtained with Ti:sapphire laser or optical parametric chirped-pulse amplification,is promising for future ultra-intense *** doped rare-earth ion used for idler dissipation is critical for effective QPCPA,but is usually not compatible with traditional *** far,only one dissipative crystal of Sm^(3+)-doped yttrium calcium oxyborate has been grown and *** we introduce optical means to modify traditional crystals for QPCPA *** theoretically demonstrate two dissipation schemes by idler frequency doubling and sum-frequency generation with an additional *** contrast to absorption dissipation,the proposed nonlinear dissipations ensure not only high signal efficiency but also high small-signal *** demonstrated ability to optically modify crystals will facilitate the wide application of QPCPA.

关键词： Quasi-parametric amplifier Second-harmonic generation Sum-frequency generation Back conversion Idler dissipation

Cow-YOLO:Automatic cow mounting detection based on non-local CSPDarknet53 and multiscale neck

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

International Journal of Agricultural and Biological Engineering 2024年第3期17卷 193-202页

作者： De Li Junhao Wang zhe Zhang Baisheng Dai Kaixuan Zhao Weizheng Shen Yanling yin Yang Li College of Electrical Engineering and Information Northeast Agricultural UniversityHarbin 150030China College of Agricultural Equipment Engineering Henan University of Science and TechnologyLuoyang 471023HenanChina College of Animal Sciences and Technology Northeast Agriculture UniversityHarbin 150030China Key Laboratory of Northeast Smart Agricultural Technology of Ministry of Agriculture and Rural Affairs Northeast Agricultural UniversityHarbin 150030China

Cows mounting behavior is a significant manifestation of estrus in *** timely detection of cows mounting behavior can make cows conceive in time,thereby improving milk production of cows and economic benefits of the *** methods of mounting behavior detection are difficult to achieve precise detection under occlusion and severe scale change environments and meet real-time ***,this study proposed a Cow-YOLO model to detect cows mounting *** meet the needs of real-time performance,YOLOv5s model is used as the baseline *** order to solve the problem of difficult detection of cows mounting behavior in an occluded environment,the CSPDarknet53 of YOLOv5s is replaced with Non-local CSPDarknet53,which enables the network to obtain global information and improves the model’s ability to detect the mounting ***,the neck of YOLOv5s is redesigned to Multiscale Neck,reinforcing the multi-scale feature fusion capability of model to solve difficulty detection under dramatic scale ***,to further increase the detection accuracy,the Coordinate Attention Head is integrated into ***,these improvements form a novel cow mounting detection model called Cow-YOLO and make Cow-YOLO more suitable for cows mounting behavior detection in occluded and drastic scale changes ***-YOLO achieved a precision of 99.7%,a recall of 99.5%,a mean average precision of 99.5%,and a detection speed of 156.3 f/s on the test *** with existing detection methods of cows mounting behavior,Cow-YOLO achieved higher detection accuracy and faster detection speed in an occluded and drastic scale-change ***-YOLO can assist ranch breeders in achieving real-time monitoring of cows estrus,enhancing ranch economic efficiency.

关键词： cows mounting automatic detection Cow-YOLO computer vision CSPDarknet53 multiscale neck

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

富氮多环含能离子盐的合成和性能

含能材料 2024年第6期32卷 623-630页

作者：王喆尹平庞思平北京理工大学材料学院北京100081

以多氨基稠环化合物6,7-二氨基-3亚氨基-[1,2,4]三唑并[1,2,4]三唑连四唑(TATOT-T)为原料,经过高锰酸钾氧化偶联和高氯酸成盐等步骤,合成了一种偶氮桥联的富氮多环含能化合物2,2′-二四唑基-3,6-二氨基-7,7′-偶氮基-[1,2,4]三唑并[1,2... 详细信息

以多氨基稠环化合物6,7-二氨基-3亚氨基-[1,2,4]三唑并[1,2,4]三唑连四唑(TATOT-T)为原料,经过高锰酸钾氧化偶联和高氯酸成盐等步骤,合成了一种偶氮桥联的富氮多环含能化合物2,2′-二四唑基-3,6-二氨基-7,7′-偶氮基-[1,2,4]三唑并[1,2,4]三唑高氯酸盐(2)。采用傅里叶红外光谱、核磁共振、元素分析、X-射线单晶衍射技术,以及差示扫描量热法(DSC)和热重分析(TG)对化合物2进行结构表征和热性能分析,结合高斯软件计算的生成焓,使用EXPLO5软件计算了其爆轰性能。结果表明,所得化合物2晶体属于单斜晶系,晶体密度为1.750 g·cm^(-3),每个晶胞中包含4个分子,起始热分解温度为232.6℃,理论爆速为8373 m∙s-1,爆压为29.05 GPa,撞击感度为40 J,摩擦感度为360 N,对外界机械刺激钝感,具有良好综合性能。

关键词：富氮含能化合物偶氮桥联四唑稠环稳定性

Chinese version of the Perth Alexithymia Questionnaire:psychometric properties and clinical applications

维普期刊数据库

同方期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

General Psychiatry 2024年第2期37卷 274-283页

作者： Xin-Lu Cai Qingying Ye Ke Ni Lin Zhu Qian Zhang Minmin yin zhe Zhang Wei Wei David A.Preece Bao-Ming Li Institute of Brain Science and Department of Physiology School of Basic Medical SciencesHangzhou Normal UniversityHangzhouZhejiangChina zhejiang Philosophy and Social Science Laboratory for Research in Early Development and Childcare Hangzhou Normal UniversityHangzhouZhejiangChina Qiqihar Mental Health Center QiqiharChina Department of Special Education Faculty of EducationHangzhou Normal UniversityHangzhouZhejiangChina Department of Neurobiology Affiliated Mental Health Center&Hangzhou Seventh People's Hospital Zhejiang University School of MedicineHangzhouZhejiangChina Liangzhu Laboratory MOE Frontier Science Center for Brain Science and Brain-machine IntegrationState Key Laboratory of Brain-machine IntelligenceZhejiang UniversityHangzhouZhejiangChina NHC and CAMS Key Laboratory of Medical Neurobiology Zhejiang UniversityHangzhouChina School of Population Health and Curtin enAble Institute Curtin UniversityPerthWestern AustraliaAustralia School of Psychological ScienceThe University of Western AustraliaPerthWestern AustraliaAustralia

Background The alexithymia trait is of high clinical *** Perth Alexithymia Questionnaire(PAQ)was recently developed to enable detailed facet-level and valence-specific assessments of *** In this paper,we introduce the first Chinese version of the PAQ and examine its psychometric properties and clinical *** In Study 1,the PAQ was administered to 990 Chinese *** examined its factor structure,internal consistency,test-retest reliability,as well as convergent,concurrent and discriminant *** Study 2,four groups,including a major depressive disorder(MDD)group(n=50),a matched healthy control group for MDD(n=50),a subclinical depression group(n=50)and a matched healthy control group for subclinical depression(n=50),were *** comparisons were conducted to assess the clinical relevance of the *** In Study 1,the intended five-factor structure of the PAQ was found to fit the data *** PAQ showed good internal consistency and test-retest reliability,as well as good convergent,concurrent and discriminant *** Study 2,the PAQ was able to successfully distinguish the MDD group and the subclinical depression group from their matched healthy *** The Chinese version of the PAQ is a valid and reliable instrument for comprehensively assessing alexithymia in the general population and adults with clinical/subclinical depression.

关键词： clinical instrument matched

Development of a High-throughput Sequencing Platform for Detection of Viral Encephalitis Pathogens Based on Amplicon Sequencing

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Biomedical and Environmental Sciences 2024年第3期37卷 294-302页

作者： ZHANG Ya Li SU Wen zhe WANG Rui Chen LI Yan ZHANG Jun Feng LIU Sheng Hui HU Dan He XU Chong Xiao yin Jia Yu yin Qi Kai HE ying LI Fan FU Shi Hong NIE Kai LIANG Guo Dong TAO Yong XU Song Tao MA Chao Feng WANG Huan Yu Shaanxi University of Chinese Medicine Xianyang 712000ShaanxiChina National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases National Institute for Viral Disease Control and PreventionChinese Center for Disease Control and PreventionBeijing 102206China Guangzhou Center for Disease Control and Prevention Guangzhou 510000GuangdongChina Shandong Center for Disease Control and Prevention Jinan 250000ShandongChina Department of Ophthalmology Beijing Chaoyang HospitalCapital Medical UniversityBeijing 100020China Xi'an Center for Disease Control and Prevention Xi’an 710054ShaanxiChina

Objective Viral encephalitis is an infectious disease severely affecting human *** is caused by a wide variety of viral pathogens,including herpes viruses,flaviviruses,enteroviruses,and other *** laboratory diagnosis of viral encephalitis is a worldwide ***,high-throughput sequencing technology has provided new tools for diagnosing central nervous system ***,In this study,we established a multipathogen detection platform for viral encephalitis based on amplicon *** We designed nine pairs of specific polymerase chain reaction(PCR)primers for the 12 viruses by reviewing the relevant *** detection ability of the primers was verified by software simulation and the detection of known positive *** sequencing was used to validate the samples,and consistency was compared with Sanger *** The results showed that the target sequences of various pathogens were obtained at a coverage depth level greater than 20×,and the sequence lengths were consistent with the sizes of the predicted *** sequences were verified using the National Center for Biotechnology Information BLAST,and all results were consistent with the results of Sanger *** Amplicon-based high-throughput sequencing technology is feasible as a supplementary method for the pathogenic detection of viral *** is also a useful tool for the high-volume screening of clinical samples.

关键词： Viral encephalitis Amplicon sequencing High-throughput sequencing Multipathogen detection