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Influence of multi-modality on moving target selection in virtual reality

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Virtual Reality & Intelligent Hardware 2019年第3期1卷 303-315页

作者： Yang li dong WU Jin HUANG feng TIAN Hong'an WANG Guozhong DAI Beijing Key Laboratory of Human-computer Interaction Institute of SoftwareChinese Academy of SciencesBeijing 100190China State Key Laboratory of computer science Chinese Academy of SciencesBeijing 100190China Institute of Remote Sensing and Digital Earth Chinese Academy of SciencesBeijing 100190China university Chinese Academy sciences Beijing 100190China

Background Owing to recent advances in virtual reality(VR)technologies,effective user interaction with dynamic content in 3D scenes has become a research *** target selection is a basic interactive task in which the user performance research in tasks is significant to user interface design in *** from the existing static target selection studies,the moving target selection in VR is affected by the change in target speed,angle and size,and lack of research on some key *** This study designs an experimental scenario in which the users play badminton under the condition of *** adding seven kinds of modal clues such as vision,audio,haptics,and their combinations,five kinds of moving speed and four kinds of serving angles,and the effect of these factors on the performance and subjective feelings in moving target selection in VR,is *** The results show that the moving speed of the shuttlecock has a significant impact on the user *** angle of service has a significant impact on hitting rate,but has no significant impact on the hitting *** acquisition of the user performance by the moving target is mainly influenced by vision under the combined modalities;adding additional modalities can improve user *** the hitting distance of the target is increased in the trimodal condition,the hitting rate *** This study analyses the results of user performance and subjective perception,and then provides suggestions on the combination of modality clues in different scenarios.

关键词： Multimodal Moving target selection Virtual reality

Scalable and Privacy-Preserving Data Sharing Based on Blockchain

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Journal of computer science & technology 2018年第3期33卷 557-567页

作者： Bao-Kun Zheng lie-Huang Zhu Meng Shen feng Gao Chuan Zhang Yan-dong li Jing Yang school of computer science and technology Beijing Institute of Technology Beijing 100081 China school of Information Management for Law China University of Political Science and Law Beijing 102249 China

With the development of network technology and cloud computing, data sharing is becoming increasingly popular, and many scholars have conducted in-depth research to promote its flourish. As the scale of data sharing expands, its privacy protection has become a hot issue in research. Moreover, in data sharing, the data is usually maintained in multiple parties, which brings new challenges to protect the privacy of these multi-party data. In this paper, we propose a trusted data sharing scheme using blockchain. We use blockchain to prevent the shared data from being tampered, and use the Paillier cryptosystem to realize the confidentiality of the shared data. In the proposed scheme, the shared data can be traded, and the transaction information is protected by using the （p, t）-threshold Paillier cryptosystem. We conduct experiments in cloud storage scenarios and the experimental results demonstrate the efficiency and effectiveness of the proposed scheme.

关键词： data sharing privacy-preserving cloud computing blockchain Paillier cryptosystem

Orientl:A Strategy of Web Information Integration

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Orientl:A Strategy of Web Information Integration

CEPC Technical Design Report

The First Conference on Web Information System and Applications

作者： YI Lei MENG Xiao-feng HU dong-dong YU Jun-tao li Yuschool of Information Renmin university of china Beijing 100872 china

＜正＞ We propose the OrientI approach for effectively building flexible applications on information integration. The system presents a fully visual development environment to build applications. With OrientI system, a user only needs to concentrate on the composition of components for building the InterPlan, and the detailed underlying operations and data streams are invisible to the user. A prototype system has been implemented and has partially proved the convenience brought by the OrientI approach.

关键词： Web information integration wrapper XML service

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Radiation Detection technology and Methods 2024年第1期8卷 I0003-I0016,1-1091页

作者： Waleed Abdallah Tiago Carlos Adorno de Freitas Konstantin Afanaciev Shakeel Ahmad Ijaz Ahmed Xiaocong Ai Abid Aleem Wolfgang Altmannshofer Fabio Alves Weiming An Rui An Daniele Paolo Anderle Stefan Antusch Yasuo Arai Andrej Arbuzov Abdesslam Arhrib Mustafa Ashry Sha Bai Yu Bai Yang Bai Vipul Bairathi Csaba Balazs Philip Bambade Yong Ban Tripamo Bandyopadhyay Shou-Shan Bao Desmond P.Barber Ayse Bat Varvara Batozskaya Subash Chandra Behera Alexander Belyaev Michele Bertucci Xiao-Jun Bi Yuanjie Bi Tianjian Bian Fabrizio Bianchi Thomas Biekotter Michela Biglietti Shalva Bilanishvili Deng Binglin Denis Bodrov Anton Bogomyagkov Serge Bondarenko Stewart Boogert Maarten Boonekamp Marcello Borri Angelo Bosotti Vincent Boudry Mohammed Boukidi Igor Boyko Ivanka Bozovic Giuseppe Bozzi Jean-Claude Brient Anastasiia Budzinskaya Masroor Bukhari Vladimir Bytev Giacomo Cacciapaglia Hua Cai Wenyong Cai Wujun Cai Yijian Cai Yizhou Cai Yuchen Cai Haiying Cai Huacheng Cai Lorenzo Calibbi Junsong Cang Guofu Cao Jianshe Cao Antoine Chance Xuejun Chang Yue Chang Zhe Chang Xinyuan Chang Wei Chao Auttakit Chatrabhuti Yimin Che Yuzhi Che Bin Chen Danping Chen Fuqing Chen Fusan Chen Gang Chen Guoming Chen Hua-Xing Chen Huirun Chen Jinhui Chen Ji-Yuan Chen Kai Chen Mali Chen Mingjun Chen Mingshui Chen Ning Chen Shanhong Chen Shanzhen Chen Shao-Long Chen Shaomin Chen Shiqiang Chen Tianlu Chen Wei Chen Xiang Chen Xiaoyu Chen Xin Chen Xun Chen Xurong Chen Ye Chen Ying Chen Yukai Chen Zelin Chen Zilin Chen Gang Chen Boping Chen Chunhui Chen Hok Chuen Cheng Huajie Cheng Shan Cheng Tongguang Cheng Yunlong Chi Pietro Chimenti Wen Han Chiu Guk Cho Ming-Chung Chu Xiaotong Chu Ziliang Chu Guglielmo Coloretti Andreas Crivellin Hanhua Cui Xiaohao Cui Zhaoyuan Cui Brunella D'Anzi ling-Yun Dai Xinchen Dai Xuwen Dai Antonio De Maria Nicola De Filippis Christophe De La Taille Francesca De Mori Chiara De Sio Elisa Del Core Shuangxue Deng Wei-Tian Deng Zhi Deng Ziyan Deng Bhupal Dev Tang Dewen Biagio Di Micco Ran Ding Siqin Dingl Yadong Ding Haiyi dong Jianin AGH university of science and technology Faculty of Physics and Applied Computer ScienceKrakow Anhui university HefeiAnhui Applied Physics Department Federal Urdu University of ArtsScience and TechnologyIslamabad Banaras Hindu university Institute of ScienceVaranasi Bandirma Onyedi Eylul university Bandirma Beihang university Beijing Beijing Computational science Research Center Beijing Beijing Conveyi LTD Beijing Beijing Glass Research Institute Co. LtdBeijing Beijing Institute of technology Beijing Beijing Normal university Beijing Brown university ProvidenceRI Budker Institute of Nuclear Physics Novosibirsk Cadi Ayyad university Laboratory of Fundamental and Applied PhysicsPolydisciplinary FacultyMarrakech Cairo university Giza Center for Theory and Computation National Tsing Hua UniversityHsinchu Central china Normal university WuhanHubei Central South university ChangshaHunan Centro de Fisica Teorica de Particulas Universidade Tecnica de LisboaLisboa Chengdu KaitengSifang Digital Radio&TV Equipment Co. LtdChengduSichuan china academy of engineering physics MianyangSichuan china building materials academy Beijing china Center of Advanced science and technology Beijing china Institute of Atomic Energy Beijing china Jiliang university HangzhouZhejiang china Nuclear Instrument CO. LTDBeijing china university of Geosciences Beijing china university of Geosciences WuhanHubei china university of Mining and technology XuzhouJiangsu china West Normal university NanchongSichuan Chongqing university Department of PhysicsChongqing Chulalongkorn university Bangkok City university of Hong Kong Department of PhysicsHong Kong Cockcroft Institute Daresbury Cornell university IthacaNY CPPM(AMU/IPhU&CNRS/INP) Marseille Dalian Minzu university DalianLiaoning Dalian university of technology Department of PhysicsDalian Deutsches Elektronen-Synchrotron DESY Hamburg Dzhelepov Laboratory of Nuclear Problems of Joint Institute for Nuclear Research(DLNP JINR) Dubna East china university Of science And Technol

The Circular Electron Positron Collider(CEPC)is a large scientific project initiated and hosted by china,fostered through extensive collaboration with international *** complex comprises four accelerators:a 30 GeV linac,a 1.1 GeV Damping Ring,a Booster capable of achieving energies up to 180 GeV,and a Collider operating at varying energy modes(Z,W,H,and tt).The linac and Damping Ring are situated on the surface,while the subterranean Booster and Collider are housed in a 100 km circumference underground tunnel,strategically accommodating future expansion with provisions for a potential Super Proton Proton Collider(SPPC).The CEPC primarily serves as a Higgs *** its baseline design with synchrotron radiation(SR)power of 30 MW per beam,it can achieve a luminosity of 5×10^(34)cm^(-2)s^(-1)per interaction point(IP),resulting in an integrated luminosity of 13 ab^(-1)for two IPs over a decade,producing 2.6 million Higgs *** the SR power to 50 MW per beam expands the CEPC's capability to generate 4.3 million Higgs bosons,facilitating precise measurements of Higgs coupling at sub-percent levels,exceeding the precision expected from the HL-LHC by an order of *** Technical Design Report(TDR)follows the Preliminary Conceptual Design Report(Pre-CDR,2015)and the Conceptual Design Report(CDR,2018),comprehensively detailing the machine's layout,performance metrics,physical design and analysis,technical systems design,R&D and prototyping efforts,and associated civil engineering ***,it includes a cost estimate and a preliminary construction timeline,establishing a framework for forthcoming engineering design phase and site selection *** is anticipated to begin around 2027-2028,pending government approval,with an estimated duration of 8 *** commencement of experiments and data collection could potentially be initiated in the mid-2030s.

关键词： initiated exceeding precise

Intelligent Development Environment and Software Knowledge Graph

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Journal of computer science & technology 2017年第2期32卷 242-249页

作者： Ze-Qi lin Bing Xie Yan-Zhen Zou Jun-feng Zhao Xuan-dong li Jun Wei Hai-Long Sun Gang Yin Key Laboratory of High Confidence Software Technologies (Peking university) Ministry of Education Beijing 100871 China Beida ( Binhai) Information Research Tianjin 300450 China National Key Laboratory for Novel Software technology Nanjing University Nanjing 210023 China technology Center of Software Engineering Institute of Software Chinese Academy of Sciences Beijing 100190 China school of computer science and Engineering Beihang University Beijing 100191 China College of computer National University of Defense Technology Changsha 410073 China

Software intelligent development has become one of the most important research trends in software engineering. In this paper, we put forward two key concepts -- intelligent development environment （IntelliDE） and software knowledge graph -- for the first time. IntelliDE is an ecosystem in which software big data are aggregated, mined and analyzed to provide intelligent assistance in the life cycle of software development. We present its architecture and discuss its key research issues and challenges. Software knowledge graph is a software knowledge representation and management framework, which plays an important role in IntelliDE. We study its concept and introduce some concrete details and examples to show how it could be constructed and leveraged.

关键词： intelligent development environment software big data software knowledge graph semantic search

基于SCO Unix Ware的实时消息队列设计与实现

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四川大学学报（自然科学版） 2004年第1期41卷 92-96页

作者：吴舜歆李洪海洪玫张冬冯子亮四川大学计算机学院图象图形研究所成都610064

实时消息队列作为一种IPC是在POSIX.1中定义的.但SCOUnixWare的最新版本7.1.3并不支持.结合实际开发的需要,提出了一种基于存储映射I/O和SystemV消息队列在用户级实现实时消息队列的方法,并在SCOUnixWare7.1.3上实现.结果表明,该方法是... 详细信息

实时消息队列作为一种IPC是在POSIX.1中定义的.但SCOUnixWare的最新版本7.1.3并不支持.结合实际开发的需要,提出了一种基于存储映射I/O和SystemV消息队列在用户级实现实时消息队列的方法,并在SCOUnixWare7.1.3上实现.结果表明,该方法是非常有效的,它能够在用户级提供一种高效的进程间实时通信机制.

关键词：实时消息队列进程间通信用户级

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糖尿病患者视网膜血管直径的影响因素

中华眼视光学与视觉科学杂志 2024年第5期26卷 374-381页

作者：臧冬晓臧博周紫曦丁晓霞王凤华邹博翟刚冯克谜李冬王禹抚顺市眼病医院抚顺113006 首都医科大学附属北京同仁医院眼科北京同仁眼科中心北京市眼科学与视觉科学重点实验室北京100005 温州医科大学附属眼视光医院温州325027

目的:了解2型糖尿病患者视网膜血管直径及其影响因素。方法:横断面研究。将2012年7月至2013年5月辽宁省抚顺市将军街道15个社区所有已确诊为2型糖尿病的居民1913例纳入研究。采用计算机辅助软件定量测量视网膜中央动脉直径(CRAE)、视网... 详细信息

目的:了解2型糖尿病患者视网膜血管直径及其影响因素。方法:横断面研究。将2012年7月至2013年5月辽宁省抚顺市将军街道15个社区所有已确诊为2型糖尿病的居民1913例纳入研究。采用计算机辅助软件定量测量视网膜中央动脉直径(CRAE)、视网膜中央静脉直径(CRVE),并计算视网膜动静脉比值(AVR)。不同特征的组间CRAE、CRVE和AVR差异比较采用Student-t检验或者方差分析。采用广义线性回归分别探讨CRAE、CRVE和AVR的影响因素。采用LOWESS下的广义估计方程探讨糖尿病视网膜病变(DR)严重程度与CRAE、CRVE和AVR之间可能存在的非线性关系。结果:身体质量指数(BMI)较大、高血压、高密度脂蛋白较低、糖化血红蛋白较低患者的CRAE较低,差异有统计学意义(均P<0.05);年龄较大、女性、糖尿病病程较长、不吸烟、糖化血红蛋白<7%患者的CRVE较低,差异有统计学意义(均P<0.05);年龄较大、女性、不吸烟、BMI较小、无高血压、高密度脂蛋白较高、甘油三酯较低、糖化血红蛋白<7%患者的AVR较高,差异有统计学意义(均P<0.05)。多因素回归显示男性、高血压、高糖化血红蛋白、较低的高密度脂蛋白和高BMI是较小的CRAE的影响因素(均P<0.05);年龄较大、吸烟、糖尿病病程增加、较高的高密度脂蛋白是较大的CRVE的影响因素(均P<0.05);年龄较小、吸烟、高血压是较小的AVR的影响因素(均P<0.05)。随着DR严重程度增加,CRAE、CRVE、AVR的改变并不呈线性关系,CRAE和CRVE存在先逐渐增加再逐渐减小的趋势;AVR存在先减小再增加的趋势。结论:DR患者的CRAE、CRVE显著降低,AVR显著升高,这种关系在中度非增生型DR和增生性DR患者中更明显。

关键词：糖尿病视网膜病变视网膜血管视网膜动脉视网膜静脉

EAST-CTI测试平台上六硼化镧等离子体源的研制

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核聚变与等离子体物理 2024年第1期44卷 24-29页

作者：孟凡卫张小辉胡广海孔德峰叶扬黄艳清齐美彬赵志豪李博董期龙合肥工业大学计算机与信息学院合肥230009 中国科学院等离子体物理研究所合肥230031 合肥综合性国家科学中心能源研究院合肥230031 衡阳师范学院物理与电子工程学院衡阳4210024 石河子大学理学院石河子832003

为了更方便和深入研究紧凑环注入(CTI)系统产生的等离子体团在等离子体中的演化过程,特设计了一套大尺寸、均匀的六硼化镧等离子体源,用来产生磁化、高密度等离子体。等离子体源的阴极采用钨丝间接加热的方式来达到工作温度,阴极最高可... 详细信息

为了更方便和深入研究紧凑环注入(CTI)系统产生的等离子体团在等离子体中的演化过程,特设计了一套大尺寸、均匀的六硼化镧等离子体源,用来产生磁化、高密度等离子体。等离子体源的阴极采用钨丝间接加热的方式来达到工作温度,阴极最高可达到1800℃。阳极采用耐高温、透过率50%的钼金属网,与阴极之间轴向间距1m。在阴极和阳极之间施加40~200V偏压,阴极发射的电子与中性气体碰撞、电离进而产生长1m直径100mm的稳态磁化等离子体柱。在台面实验中,测试了源的放电性能和等离子体相关参数。实验结果表明,在阴极发射电流密度为1~2A·cm^(-2)的情况下,测得的氩等离子体电子密度可达到10^(18)m^(-3)量级,电子温度约为8eV。通过增加阴、阳极之间偏压,阴极发射电流密度最高达到8.5A·cm^(-2),等离子体参数与托卡马克边界参数相近。该等离子体源满足设计要求并具备为EAST-CTI系统开展台面实验的能力。

关键词： EAST-CTI 六硼化镧阴极等离子体源磁化等离子体

Noninvasive Tracking of Every Individual in Unmarked Mouse Groups Using Multi-Camera Fusion and Deep Learning

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Neuroscience Bulletin 2023年第6期39卷 893-910页

作者： feng Su Yangzhen Wang Mengping Wei Chong Wang Shaoli Wang Lei Yang Jianmin li Peijiang Yuan dong-Gen Luo Chen Zhang Department of Neurobiology School of Basic Medical SciencesBeijing Key Laboratory of Neural Regeneration and RepairCapital Medical UniversityBeijing100069China Chinese Institute for Brain Research Beijing102206China State Key Laboratory of Translational Medicine and Innovative Drug Development Nanjing210000China Peking-Tsinghua Center for life sciences Academy for Advanced Interdisciplinary StudiesPeking UniversityBeijing100871China school of life sciences Tsinghua UniversityBeijing100084China school of Biological science and Medical Engineering Beihang UniversityBeijing100191China The Key Laboratory of Developmental Genes and Human Disease Institute of Life SciencesSoutheast UniversityNanjing210096JiangsuChina Institute for Artificial Intelligence the State Key Laboratory of Intelligence Technology and SystemsBeijing National Research Center for Information Science and TechnologyDepartment of Computer Science and TechnologyTsinghua UniversityBeijing100084China school of Mechanical Engineering and Automation Beihang UniversityBeijing100191China

Accurate and efficient methods for identifying and tracking each animal in a group are needed to study complex behaviors and social *** tracking methods(e.g.,marking each animal with dye or surgically implanting microchips)can be invasive and may have an impact on the social behavior being *** overcome these shortcomings,video-based methods for tracking unmarked animals,such as fruit flies and zebrafish,have been ***,tracking individual mice in a group remains a challenging problem because of their flexible body and complicated interaction *** this study,we report the development of a multi-object tracker for mice that uses the Faster region-based convolutional neural network(R-CNN)deep learning algorithm with geometric transformations in combination with multi-camera/multi-image fusion *** system successfully tracked every individual in groups of unmarked mice and was applied to investigate chasing *** proposed system constitutes a step forward in the noninvasive tracking of individual mice engaged in social behavior.

关键词： Noninvasive tracking Deep learning Multi-camera Mouse group Social interaction