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IASTED International Conference on Applied simulation and Modelling, ASM 2011

作者： Wei, Jicai Wang, Nuanchen Ren, Tingguang Zhang, Jing Li, Qiang Beijing Institute of System Engineer Science and Technology on Complex Systems Simulation Laboratory Post Box. 9702#19 Beijing 100101 China

ISBN: (纸本)9780889868939

Multi-project and multi-attribute decision making can be characterized as a process of overall coordination and optimization. Through the application analysis of decision making, the analysis process of decision making are projected on basis of targets, methods and evaluation;then with the combination of qualitative and quantitative methods and consideration of the features of exponential model, interval ergodic analysis method is proposed and finally established. The evaluation model to be structured on basis of the method gets multiple projects and attributes involved, and conducts ergodic calculation on condition of the given target criteria and certain region of each attribute so as to get the evaluation of the multiple projects accomplished. At last, a case study is provided in order to further elaborate the application of the analysis procedures of decision making and the interval ergodic analysis method in the multi-project and multi-attribute decision making.

关键词： Decision making

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Load balancing strategy for wireless multi-hotspot networks based on improved NSGA-II algorithm

Load balancing strategy for wireless multi-hotspot networks ...

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2022 International Conference on Networking and Network Applications, NaNA 2022

作者： Yu, Han Zhan, Jie Libin, Jiao Han, Jun-Mei School of Physics and Electronic Science Hunan University of Science and Technology Xiangtan412001 China Science and Technology on Communication Networks Laboratory Shijiazhuang050081 China National Key Laboratory for Complex Systems Simulation Department of Systems General Design Institute of Systems Engineering Beijing100101 China

ISBN: (数字)9781665461313

ISBN: (纸本)9781665461313

IEEE 802.11 Wireless Local Area Network (WLAN) is a popular way for mobile devices to access the Internet. Operators and service providers often increase the density of wireless access points in order to provide users with better connections and user experience. As a result, WLAN users find themselves covered by multiple access points. In traditional wireless multi-hotspot networks most user terminals choose the access point with the strongest signal without considering the existing load on that access point, leading to severe congestion and load imbalance problems. This paper proposes an improved NSGA-II-based load balancing strategy for wireless multi-hotspot networks, which determines which hotspot should be associated with each user terminal by taking into account the current access point load, the received signal strength and the throughput size of the user terminal. The simulation results show that compared with the traditional strongest signal First (SSF) strategy, the proposed load balancing strategy can improve the network throughput by more than 30%. © 2022 IEEE.

关键词： IEEE Standards

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The application of entropy weighting ideal point method in electronic information equipment system of systems construction decision-making

The application of entropy weighting ideal point method in e...

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2013 International Conference on Mechanical and Electronics Engineering, ICMEE 2013

作者： Zhao, Zhi Qiang Wang, Zhi Gang College of Mechaeronics Engineering and Automation National University of Defense Technology Changsha Hunan 410031 China Science and Technology on Complex land Systems Simulation Laboratory Beijing 100012 China

ISBN: (纸本)9783037858103

The equipment system of systems (ESoS) construction risk analysis is great significance to enhance decision-making and management level of information technology ESoS construction. The concept of entropy in the information engineering is using to calculate the entropy, and the entropy weight is used to fix subjective weight, after that Combining ideal point method to evaluate and select the schemes, the best decision of ESoS construction is get. The model is of impersonality and in reason, which provided a simple and practical method for construction risk evaluation of electronic information ESoS. © (2013) Trans Tech Publications, Switzerland.

关键词： Decision making

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Study on simulation framework of army equipment system of systems based on high-performance parallel computing

Study on simulation framework of army equipment system of sy...

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2014 2nd International Conference on Mechatronics, Robotics and Automation, ICMRA 2014

作者： Hao, Jia Xin Zhao, Zhi Qiang Science and Technology on Complex Land Systems Simulation Laboratory Beijing 100012 China College of Mechaeronics Engineering and Automation National University of Defense Technology Changsha Hunan 410031 China

ISBN: (纸本)9783038350781

The high-performance parallel computing (HPPC) has a better overall performance and higher productivity, for a generical large-scale army equipment system of systems (AESoS) simulation, and the runtime efficiency can be multiplied several tenfold to several hundredfold. The requirement analysis of simulation framework of AESoS based on HPPC was proposed. After the simulation framework of AESoS based on HPPC and its key techniques were discussed, the simulation framework of AESoS Based HPPC was designed. it is of great significance to offer certain references for the engineering application in the simulation fields of AESoS based on HPPC. © (2014) Trans Tech Publications, Switzerland.

关键词： System of systems

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Supertetragonal BaZrS_(3):A promising perovskite sulphide with giant ferroelectricity and low band gap

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science China(Physics,Mechanics & Astronomy) 2024年第8期67卷 126-133页

作者： Menglu Li Sa Zhang Chenhan Liu Xiaotao Zu Liang Qiao Haiyan Xiao School of Physics University of Electronic Science and Technology of ChinaChengdu 611731China College of Mathematics and Physics Chengdu University of TechnologyChengdu 610059China Micro-and Nano-scale Thermal Measurement and Thermal Management Laboratory Ministry of Education Key Laboratory of Numerical Simulation of Large-Scale Complex SystemsSchool of Energy and Mechanical EngineeringNanjing Normal UniversityNanjing 210023China

Over the past century,ferroelectricity has offered exciting opportunities for fundamental research and device ***,most of the discovered excellent ferroelectrics are oxide materials with large band gaps,limiting their potential for optoelectronics *** using first-principles calculations we identify a new narrow-gap ferroelectric beyond oxides,i.e.,ferroelectric perovskite sulphide BaZrS_(3).Under large compressive strains,BaZrS_(3)can be stabilized into a unique supertetragonal phase with an extraordinary polarization of 67.16μC/cm^(2),which is even stronger than that of conventional oxide ***,the supertetragonal BaZrS_(3)exhibits a direct narrow band gap of 1.2 eV and excellent electronic *** on the chemical bonding analysis,we attribute the formation of supertetragonal phase to charge re-ordering in which theπbond overlap along the long〈Zr-S〉bond completely vanishes and the antibonding states of theσbond appear below the Fermi *** work provides a conceptual strategy for designing new ferroelectrics for electronic and photovoltaic applications.

关键词： supertetragonal phase perovskite sulphide ferroelectricity

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Research on Chi-square Distribution-based Firing Accuracy Data Analysis

Research on Chi-square Distribution-based Firing Accuracy Da...

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2015 International Conference on Advances in Mechanical Engineering and Industrial Informatics(AMEII 2015)

作者： Zhiqiang Zhao Bo Chuan Jiang Jingang Zhang Science and Technology on Complex land Systems Simulation Laboratory

ISBN: (纸本)9781510806481

In the test and evaluation of operation, the test benefits may be greatly reduced because no useful conclusions may be obtained from test data due to missing or incompleteness of test information records. Based on the characteristics of gun firing and by separating firing errors, this paper proposes an idea using for analyzing firing accuracy in case of incomplete test data records, establishes a method for analyzing chi-square distribution-based firing accuracy data, and conducts test data analysis on test data of a certain type of weapon. The effectiveness of this method is proven by analysis results which have offered effective method for conducting test data analysis.

关键词： Operational Test firing accuracy elements error dispersion error chi-square distribution confidence degree

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Study on high-performance simulation computer for large-scale system of systems simulation

Study on high-performance simulation computer for large-scal...

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3rd International Conference on Manufacturing Engineering and Process, ICMEP 2014

作者： Zhao, Zhi Qiang Hao, Jia Xin Science and Technology on Complex Land Systems Simulation Laboratory Beijing 100012 China College of Mechaeronics Engineering and Automation National University of Defense Technology Changsha Hunan 410031 China

ISBN: (纸本)9783038350842

关键词： System of systems

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Tactical communication effects federate for distributed simulations based on HLA

Tactical communication effects federate for distributed simu...

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2014 International Conference on simulation and Modeling Methodologies, Technologies and Applications (SMTA 2014)

作者： Bin Gan Jiaxin Hao Jingang Zhang Science and Technology on Complex Land Systems Simulation Laboratory

Warfare simulation Environment for Army Weapon and Equipment systems(WSAWES) provide a tactically robust environment for simulation experiments. The science and technology on complex Land systems simulation laboratory has now developed a tactical communication effects federate(TCEF) integrated with Qual Net to model tactical communications systems and networks. TCEF interacts with WSAWES's CGF that creates a constructive force-on-force simulation environment where communications are modeled by the TCEF and behaviors are modeled by the CGF. As the TCEF is already being integrated into distributed experiments in ghost mode, the TCEF services effort appears to be promising in meeting the stated goals, such as analysis for the connectivity and delay.

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Study on the Effectiveness Equivalent of Army Weapons Based on the SOS simulation

Study on the Effectiveness Equivalent of Army Weapons Based ...

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2nd International Conference on simulation and Modeling Methodologies,Technologies and Applications(SMTA 2015)

作者： Z.Q.Zhao Y.P.Wang Z.Q.Zhao Science and Technology on Complex Land Systems Simulation Laboratory

Under the background of the system of systems(Sos) confrontation of army weapon, owing to being enclosed in the sealed fighting subsystem, and the effectiveness matrix is degrading, so the effectiveness equivalent on the varieties of the weapon in the system of systems cannot be conducted for many years as a difficult problem in the field of assessment on the effectiveness of weapon systems. The principle of multiple effectiveness equivalent aiming at expanding the traditional effectiveness equivalent theory was presented, filling in gap existing in the original theory, and satisfactorily realized the effectiveness equivalent of varieties of main weapon systems in army's weapon system of systems, which is an important breakthrough and innovation in the study on assessment of effectiveness of weapon systems, enjoying broad utilization prospect.

关键词： Study on the Effectiveness Equivalent of Army Weapons Based on the SOS simulation SOS

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Privacy sensitive large-margin model for face de-identification 1st

Privacy sensitive large-margin model for face de-identifica...

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1st International Conference on Neural Computing for Advanced Applications, NCAA 2020

作者： Guo, Zhiqiang Liu, Huigui Kuang, Zhenzhong Nakashima, Yuta Babaguchi, Noboru Key Laboratory of Complex Systems Modeling and Simulation School of Computer Science and Technology Hangzhou Dianzi University Hangzhou310018 China Osaka University Osaka Japan

ISBN: (纸本)9789811576690

There is an increasing concern of face privacy protection along with the wide application of big media data and social networks due to free online data release. Although some pioneering works obtained some achievements, they are not sufficient enough for sanitizing the sensitive identity information. In this paper, we propose a generative approach to de-identify face images yet preserving the non-sensitive information for data reusability. To ensure a high privacy level, we introduce a large-margin model for the synthesized new identities by keeping a safe distance with both the input identity and existing identities. Besides, we show that our face de-identification operation follows the (Formula Presented)-differential privacy rule which can provide a rigorous privacy notion in theory. We evaluate the proposed approach using the vggface dataset and compare with several state-of-the-art methods. The results show that our approach outperforms previous solutions for effective face privacy protection while preserving the major utilities. © Springer Nature Singapore Pte Ltd. 2020.

关键词： Privacy-preserving techniques

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