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2nd International Conference on Advanced Cloud and Big Data, CBD 2014

作者： Yang, Qiang Huang, Bing Zeng, Xiaojun Liu, Jianfeng Science and Technology on Information System Engineering Laboratory National University of Defense Technology Changsha410073 China School of Computer Science University of Mancheste ManchesterM13 9PL United Kingdom Beijing Institute of Remote Sensing Beijing100192 China

ISBN: (纸本)9781479980857

Based on analyzing time-varying position information of moving objects, searching the group members which participate in a joint action could provide an important support for the decision makers in the field such as the investigation of criminal cases, group emergency disposal, large-scale military action etc. As the expansion of mobility properties correlation analysis, this paper proposed a novel group member search method based on dispersion analysis, which focused on analyzing the dispersion variation before and after the introduction of a moving object into a group. Comparing the method judging only by mobility properties correlation, the proposed method can effectively reduce the occurrence probability of misclassification in some case, and search the group members more accurately. Combined with application background, the experiment analysis confirmed the validity and practicability of this method. © 2014 IEEE.

关键词： Decision making

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THE ASTROPY PROJECT: BUILDING AN INCLUSIVE, OPEN-science PROJECT AND STATUS OF THE V2.0 CORE PACKAGE

arXiv

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arXiv 2018年

作者： Price-Whelan, A.M. Günther, H.M. Lim, P.L. Crawford, S.M. Conseil, S. Shupe, D.L. Craig, M.W. Dencheva, N. Ginsburg, A. VanderPlas, J.T. Bradley, L.D. Pérez-Suárez, D. de Val-Borro, M. Aldcroft, T.L. Cruz, K.L. Robitaille, T.P. Tollerud, E.J. Ardelean, C. Babej, T. Bachetti, M. Bamford, S.P. Barentsen, G. Barmby, P. Baumbach, A. Biscani, F. Boquien, M. Bostroem, K.A. Bouma, L.G. Brammer, G.B. Breytenbach, H. Buddelmeijer, H. Burke, D.J. Calderone, G. Cara, M. Cardoso, J.V.M. Cheedella, S. Copin, Y. Crichton, D. D’Avella, D. Deil, C. Depagne, É. Dietrich, J.P. Donath, A. Droettboom, M. Earl, N. Erben, T. Fabbro, S. Ferreira, L.A. Garrison, L.H. Gibbons, S.L.J. Goldstein, D.A. Gommers, R. Greco, J.P. Greenfield, P. Groener, A.M. Hagen, A. Hirst, P. Homeier, D. Horton, A.J. Hosseinzadeh, G. Hu, L. Hunkeler, J.S. Ivezić, Ž. Jain, A. Jenness, T. Kanarek, G. Kendrew, S. Kern, N.S. Kerzendorf, W.E. King, J. Kirkby, D. Kulkarni, A.M. Kumar, A. Lee, A. Lenz, D. Littlefair, S.P. Ma, Z. Macleod, D.M. Mastropietro, M. McCully, C. Montagnac, S. Morris, B.M. Mueller, M. Mumford, S.J. Muna, D. Murphy, N.A. Nelson, S. Nguyen, G.H. Ninan, J.P. Nöthe, M. Ogaz, S. Oh, S. Parejko, J.K. Parley, N. Pascual, S. Patil, A.A. Plunkett, A.L. Prochaska, J.X. Janga, V. Reddy Sabater, J. Sakurikar, P. Sherbert, L.E. Shih, A.Y. Sick, J. Singanamalla, S. Singer, L.P. Sladen, P.H. Streicher, O. Teuben, P. Thomas, S.W. Tremblay, G.R. Turner, J.E.H. Terrón, V. van Kerkwijk, M.H. de la Vega, A. Watkins, L.L. Weaver, B.A. Whitmore, J.B. Woillez, J. Department of Astrophysical Sciences Princeton University PrincetonNJ08544 United States Kavli Institute for Astrophysics and Space Research Massachusetts Institute of Technology 70 Vassar St. CambridgeMA02139 United States Space Telescope Science Institute 3700 San Martin Dr. BaltimoreMD21218 United States South African Astronomical Observatory PO Box 9 Observatory Cape Town7935 South Africa Univ Lyon Univ Lyon1 Ens de Lyon CNRS Centre de Recherche Astrophysique de Lyon UMR5574 Saint-Genis-LavalF-69230 France Caltech/IPAC 1200 E. California Blvd PasadenaCA91125 United States Department of Physics and Astronomy Minnesota State University Moorhead 1104 7th Ave S MoorheadMN56563 United States National Radio Astronomy Observatory 1003 Lopezville Rd SocorroNM87801 United States eScience Institute University of Washington 3910 15th Ave NE SeattleWA98195 United States University College London/Research IT Services Gower St LondonWC1E 6BT United Kingdom Astrochemistry Laboratory NASA Goddard Space Flight Center 8800 Greenbelt Road GreenbeltMD20771 United States Harvard-Smithsonian Center for Astrophysics 60 Garden St. CambridgeMA02138 United States Department of Physics and Astronomy Hunter College City University of New York 695 Park Avenue New YorkNY10065 United States Physics Graduate Center of the City University of New York New YorkNY United States Department of Astrophysics American Museum of Natural History New YorkNY United States Aperio Software Ltd. Headingley Enterprise and Arts Centre Bennett Road LeedsLS6 3HN United Kingdom Department of Physics & Astronomy University of Western Ontario 1151 Richmond St LondonONN5X4H1 Canada Department of Theoretical Physics & Astrophysics Masaryk University Kotlarska 2 Brno61137 Czech Republic INAF-Osservatorio Astronomico di Cagliari via della Scienza 5 SelargiusI-09047 Italy School of Physics & Astronomy University of Nottingham University Park NottinghamNG7 2RD Unit

The Astropy project supports and fosters the development of open-source and openly-developed Python packages that provide commonly-needed functionality to the astronomical community. A key element of the Astropy project is the core package astropy, which serves as the foundation for more specialized projects and packages. In this article, we provide an overview of the organization of the Astropy project and summarize key features in the core package as of the recent major release, version 2.0. We then describe the project infrastructure designed to facilitate and support development for a broader ecosystem of inter-operable packages. We conclude with a future outlook of planned new features and directions for the broader Astropy project. Copyright © 2018, The Authors. All rights reserved.

关键词： Astrophysics

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Analysis of city traffic characteristics from GPS data

Analysis of city traffic characteristics from GPS data

引用

2014 International Conference on Applied sciences, Engineering and technology, ICASET 2014

作者： Dong, Jiang Yuan Han, Xu Wang, Wen Jun Tianjin Key Laboratory of Cognitive Computing and Application School of Computer Science and Technology Tianjin University Tianjin 300000 China The population management office of Tianjin Municipal Public Security Bureau Tianjin 300000 China

ISBN: (纸本)9783038351849

With the city urbanization and increase in the number of motor vehicle, Study of the city traffic pattern from taxi GPS data has become the research hotspot. This paper analyzes two city taxi GPS data;calculate the peak of get-on/off amount, the time span distribution of time dimension. Radius of gyration of spatial dimension. Then analyze the traffic characteristics through these temporal characteristic parameters. © (2014) Trans Tech Publications, Switzerland.

关键词： Global positioning system

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Research of the issues based on trusted cloud security

Research of the issues based on trusted cloud security

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4th International Conference on Materials science and Information technology, MSIT 2014

作者： Huang, Yi Ma, Xin Qiang Liu, You Yuan Li, Dan Ning Key Laboratory of Machine Vision and Intelligent Information System Chongqing University of Arts and Sciences Chongqing 402160 China Guizhou Academy of Science Guiyang 550001 China School of Computer Science and Technology Guizhou University Guiyang 550025 China

ISBN: (纸本)9783038351733

Cloud computing represents one of the most significant shifts in information technology many of us are likely to see in our lifetimes. It offers an innovative business model for organizations to adopt IT services without upfront investment. Cloud computing moves the application software and databases to large data centers, where the management of the data and services may not be fully trustworthy. Security is one of the major issues which hamper the growth of cloud. The security for cloud computing is emerging area for study and this paper provide technical components of cloud computing and security idea in terms of cloud computing based on analysis of cloud security treats. © (2014) Trans Tech Publications, Switzerland.

关键词： Access control

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Optimal scheduling of single-arm multi-cluster tools with two-space buffering modules

Optimal scheduling of single-arm multi-cluster tools with tw...

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2014 IEEE International Conference on Automation science and Engineering, CASE 2014

作者： Yang, Fajun Wu, Naiqi Qiao, Yan Zhou, Mengchu Department of Industrial Engineering School of Electro-Mechanical Engineering Guangdong University of Technology Guangzhou510006 China Institute of Systems Engineering Macau University of Science and Technology China Key Laboratory of Embedded System and Service Computing Ministry of Education Tongji University Shanghai201804 China Department of Electrical and Computer Engineering New Jersey Institute of Technology NewarkNJ07102-1982 United States

A multi-cluster tool is composed of a number of single-cluster tools linked by buffering modules. The capacity of a buffering module can be one or two. Aiming at finding an optimal one-wafer cyclic schedule, this work explores the effect of two-space buffering modules on the performance of a multi-cluster tool. The tool is modeled by a kind of Petri nets. The dynamic behavior of robot waiting and tasks, process modules, and buffers is well captured by the net model. With the model, this work shows that there is always a one-wafer cyclic schedule that reaches the lower bound of the cycle time of a process-dominant tool. Furthermore, a constant-time algorithm is revealed to find such a schedule for the first time for such multi-cluster tools. An illustrative example is given to show the application and power of this new method. © 2014 IEEE.

关键词： Petri nets

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Monitor-based Liveness-enforcing Petri Net Supervisors for Flexible Manufacturing systems 33

Monitor-based Liveness-enforcing Petri Net Supervisors for F...

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第三十三届中国控制会议

作者： YOU Dan WANG Shouguang ZHOU MengChu WU Wenhui School of Information & Electronic Engineering Zhejiang Gongshang University IEEE State Key Laboratory for Manufacturing Systems Engineering Xi’ an Jiaotong University The Key Laboratory of Embedded System and Service Computing Ministry of EducationTongji University Department of Electrical and Computer Engineering New Jersey Institute of TechnologyNewarkNJ 07102USA

ISBN: (纸本)9781479947249

Deadlocks are a rather undesirable phenomenon in flexible manufacturing systems(FMSs).This work,by adding monitors,develops a deadlock prevention policy for FMSs that can be modeled by a class of Petri nets called-S3 PR ***,an algorithm is given to reduce an S3 PR via *** on it,-resources in-S3 PRs are classified into A--resources and ***,for an-S3 PR with only B--resources,it is proved that a maximally permissive liveness-enforcing supervisor can be designed by M-controlling all the emptied strict minimal siphons(SMSs).For an-S3 PR containing A--resources,a liveness-enforcing supervisor can be designed by iteratively reducing the net via A--resources and adding the corresponding ***,a comprehensive deadlock prevention algorithm for-S3 PRs is *** FMS example is used to illustrate its application.

关键词： Flexible manufacturing system(FMS),Petri nets,deadlock prevention policy,supervisory control

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A security framework in G-Hadoop for big data computing across distributed Cloud data centres

A security framework in G-Hadoop for big data computing acro...

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作者： Zhao, Jiaqi Wang, Lizhe Tao, Jie Chen, Jinjun Sun, Weiye Ranjan, Rajiv Kolodziej, Joanna Streit, Achim Georgakopoulos, Dimitrios School of Basic Sciences Changchun University of Technology China Institute of Remote Sensing and Digital Earth Chinese Academy of Sciences China Steinbuch Center for Computing Karlsruhe Institute of Technology Germany Australia Information Engineering Laboratory CSIRO ICT Centre Australia Institute of Computer Science Cracow University of Technology Poland

MapReduce is regarded as an adequate programming model for large-scale data-intensive applications. The Hadoop framework is a well-known MapReduce implementation that runs the MapReduce tasks on a cluster system. G-Hadoop is an extension of the Hadoop MapReduce framework with the functionality of allowing the MapReduce tasks to run on multiple clusters. However, G-Hadoop simply reuses the user authentication and job submission mechanism of Hadoop, which is designed for a single cluster. This work proposes a new security model for G-Hadoop. The security model is based on several security solutions such as public key cryptography and the SSL protocol, and is dedicatedly designed for distributed environments. This security framework simplifies the users authentication and job submission process of the current G-Hadoop implementation with a single-sign-on approach. In addition, the designed security framework provides a number of different security mechanisms to protect the G-Hadoop system from traditional attacks. © 2014 Elsevier Inc.

关键词： MapReduce

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Enabling Large-Scale Biomolecular Conformation Search with Replica Exchange Statistical Temperature Molecular Dynamics (RESTMD) over HPC and Cloud computing Resources

Enabling Large-Scale Biomolecular Conformation Search with R...

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International Conference on Advanced Information Networking and Applications Workshops (AINAW)

作者： Nayong Kim Richard Platania Wei Huang Chris Knight Tom Keyes Seung-Jong Park Joohyun Kim Center for Computation & Technology Louisiana State University Baton Rouge LA USA Department of Computer Science Louisiana State University Baton Rouge LA USA Center for Proteomics and Bioinformatics School of Medicine Case Western Reserve University Cleveland Ohio USA Leadership Computing Facility Argonne National Laboratory Argonne Illinois USA Chemistry Department Boston University Boston MA USA

We present the latest development and experimental simulation studies of Statistical Temperature Molecular Dynamics (STMD) and its parallel tempering version, Replica Exchange Statistical Temperature Molecular Dynamics (RESTMD). Our main contributions are i) introduction of newly implemented STMD in LAMMPS, ii) use of large scale distributed cyber infrastructure including Amazon EC2 and the nationwide distributed computing infrastructure GENI, in addition to High-performance computing (HPC) cluster systems, and iii) benchmark and simulation results highlighting advantages and potentials of STMD and RESTMD for challenging large-scale bio molecular conformational search. In this work, we attempt to provide convincing evidence that RESTMD, combining two advanced sampling protocols, STMD and the replica exchange algorithm, offers various advantages over not only conventional ineffective approaches but also other enhanced sampling methods. Interestingly, RESTMD has benefits over the most popular Replica Exchange Molecular Dynamics (REMD) as an application maximizing its capacity in HPC environments. For example, RESTMD alleviates the need of a large number of replicas which is unavoidable in REMD and is flexible in order to exploit the maximum amount of available computing power of a cluster system. Continuing our recent effort in which RESTMD was implemented with a community molecular dynamics package, CHARMM, and the Hadoop MapReduce, in this work, we report latest development outcomes. First of all, we plugged the implementation of STMD into LAMMPS, one of the most popular public molecular dynamics packages. This is expected to position STMD and RESTMD appealing to investigators from a broad range of life science fields. Secondly, Hadoop MapReduce-based RESTMD is now able to run on Amazon EC2 and the nationwide network virtual organization, the GENI distributed computing environment. Thirdly, in order to find optimized parameters for RESTMD simulations, simulation res

关键词： Temperature distribution Heuristic algorithms Computational modeling Scalability Histograms Benchmark testing

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Practical high-speed light source for decoy-state quantum key distribution

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Chinese Optics Letters 2014年第7期12卷 67-70页

作者：杜海彬梁焰张盛祥陈修亮赵林陈杰曾和平 State Key Laboratory of Precision Spectroscopy East China Normal University Shanghai Key Laboratory of Modern Optical System Engineering Research Center of Optical Instrument and SystemMinistry of Education School of Optical-Electrical and Computer Engineering University of Shanghai for Science and Technology

High-speed light source is realized for decoy-state quantum key distribution （QKD） at telecom wavelength of 1.55 ttm. By implementing two different electrical pulses together and triggering with 100 MHz pseudo- random number to drive the laser diode, the signal-state and the decoy-state pulses are prepared with identical pulse duration of 25 ps and similar spectral characteristics, avoiding the eavesdropper＇s attack by temporal and spectral analysis. The intensity fluctuation of the light source is quantified to satisfy the practical decoy-state QKD with random intensity error. The characteristics of the light source are analyzed with a high-speed single-photon detector.

关键词： Particle beams Quantum cryptography Spectrum analysis

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OOPN-SRAM: A Novel Method for Software Risk Assessment

OOPN-SRAM: A Novel Method for Software Risk Assessment

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IEEE International Conference on Engineering of Complex computer systems

作者： Xiaofei Wu Xiaohong Li Ruitao Feng Guangquan Xu Jing Hu Zhiyong Feng School of Computer Science and Technology Tianjin Key Laboratory of Cognitive Computing and Application Tianjin China

This paper proposes a Software Risk Assessment Method based on Object-Oriented Petri Net (OOPN-SRAM), in which risk assessment procedure is divided into four steps, expressed as four corresponding objects, including asset recognition, weakness analysis, consequence property confirmation and risk calculation. Each object is modeled with Petri net. Specialists recognize software assets by the 1-9 scales method of Analytic Hierarchy Process (AHP). The weaknesses in a system are found by the vulnerability scanner. The damage degree and the exploitation likelihood of a weakness are evaluated by such authorities as Common Weakness Enumeration (CWE). The consequence properties are confirmed by specialists according to the software requirements. Finally, in the risk calculation, risk degree and overall risk value are calculated by using exponential method and weighted average method respectively. Furthermore, we illustrate the application of our OOPN-SRAM method with realistic examples including web-banking and forum, and make a comparison with traditional methods. The results show that OOPN-SRAM not only increases the efficiency of the evaluation process, but also makes the evaluation result more objective and accurate.

关键词： Software Risk management Object oriented modeling Security Computational modeling Educational institutions Availability

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