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Fuzzy Topology Based on Residuated Lattice-Valued Logic

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Acta Mathematica Sinica,English Series 2001年第1期17卷 89-102页

作者： Ming sheng ying State Key Laboratory of Intelligent Technology and Systems Department of Computer Science and Technology Tsinghua University

We use a semantical method of complete residuated lattice-valued logic to give a general- ization of fuzzy topology as a partial answer to a problem by Rosser and Turquette.

关键词： Fuzzy topology Residuated lattice Many-valued logic Semantics

Spiking Behavior in Chua＇s Circuit

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Chinese Physics Letters 2010年第6期27卷 24-26页

作者： JI ying BI Qin-sheng Faculty of Science Jiangsu University Zhenjiang 212013

Chua ＇s circuit with a slow-fast effect is established under certain parameter conditions. The dynamics of this slow- fast system is investigated. A spiking phenomenon can be observed in the numerical simulation. By introducing slow-fast analysis and a generalized Jacobian matrix at the non-smooth boundaries, the bifurcation mechanism for the periodic spiking solution, different from the smooth case, is discussed.

关键词： ELECTRONIC circuits QUANTITATIVE research NUMERICAL analysis SIMULATION methods & models NONSMOOTH optimization BIFURCATION theory

Testing and Evaluation for Web Usability Based on Extended Markov Chain Model

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Wuhan University Journal of Natural Sciences 2004年第5期9卷 687-693页

作者： MAOCheng-ying LUYan-sheng CollegeofComputerScienceandTechnology HuazhongUniversityofScienceandTechnology.Wuhan430074.Hubei.China

As the increasing popularity and complexity of Web applications and the emergence of their new characteristics, the testing and maintenance of large, complex Web applications are becoming more complex and difficult. Web applications generally contain lots of pages and are used by enormous users. Statistical testing is an effective way of ensuring their quality. Web usage can be accurately described by Markov chain which has been proved to be an ideal model for software statistical testing. The results of unit testing can be utilized in the latter stages, which is an important strategy for bottom-to-top integration testing, and the other improvement of extended Markov chain model (EMM) is to present the error type vector which is treated as a part of page node. this paper also proposes the algorithm for generating test cases of usage paths. Finally, optional usage reliability evaluation methods and an incremental usability regression testing model for testing and evaluation are presented. Key words statistical testing - evaluation for Web usability - extended Markov chain model (EMM) - Web log mining - reliability evaluation CLC number TP311. 5 Foundation item: Supported by the National Defence Research Project (No. 41315. 9. 2) and National Science and Technology Plan (2001BA102A04-02-03)Biography: MAO Cheng-ying (1978-), male, Ph.D. candidate, research direction: software testing. Research direction: advanced database system, software testing, component technology and data mining.

关键词： statistical testing evaluation for Web usability extended Markov chain model (EMM) Web log mining reliability evaluation

Resilient tightly coupled INS/UWB integration method for indoor UAV navigation under challenging scenarios

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Defence Technology（防务技术） 2023年第4期22卷 185-196页

作者： Qian Meng Yang Song sheng-ying Li Yuan Zhuang Key Laboratory of Micro-Inertial Instrument and Advanced Navigation Technology Southeast UniversityNanjing210096China Department of Mechanical Engineering Hong Kong Polytechnic UniversityHong KongChina State Key Laboratory of Information Engineering in Surveying Mapping and Remote SensingWuhan UniversityWuhanChina

Based on the high positioning accuracy,low cost and low-power consumption,the ultra-wide-band(UWB)is an ideal solution for indoor unmanned aerial vehicle(UAV)localization and ***,the UWB signals are easy to be blocked or reflected by obstacles such as walls and furniture.A resilient tightly-coupled inertial navigation system(INS)/UWB integration is proposed and implemented for indoor UAV navigation in this paper.A factor graph optimization(FGO)method enhanced by resilient stochastic model is established to cope with the indoor challenging *** deal with the impact of UWB non-line-of-sight(NLOS)signals and noise uncertainty,the conventional neural net-works(CNNs)are introduced into the stochastic modelling to improve the resilience and reliability of the *** on the status that the UWB features are limited,a‘two-phase'CNNs structure was designed and implemented:one for signal classification and the other one for measurement noise *** proposed resilient FGO method is tested on flighting UAV platform under actual indoor challenging *** to classical FGO method,the overall positioning errors can be decreased from about 0.60 m to centimeter-level under signal block and reflection *** superiority of resilient FGO which effectively verified in constrained environment is pretty important for positioning accuracy and integrity for indoor navigation task.

关键词： Unmanned aerial vehicle(UAV) Resilient navigation Indoor positioning Factor graph optimization Ultra-wide band(UWB)

Group Buying of Competing Retailers with Fairness Concerns

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Journal of Systems Science and Systems Engineering 2020年第6期29卷 655-674页

作者： Na He Zhong-Zhong Jiang Minghe Sun ying sheng School of Business Administration&Institute of Behavioral and Service Operations Management Northeastern UniversityShenyang 110167China bKey Laboratory of Data Analytics and Optimization for Smart Industry(Northeastern University) Ministry of EducationShenyang 110819China Department of Management Science and Statistics College of BusinessThe University of Texas at San AntonioSan Antonio TX 78249USA College of Sciences Northeastern UniversityShenyang 110819China

The fairness concern behavior is particularly common among members in supply chain *** downstream retailers often compare their profits with those of the other members in the supply chain,especially that of the supplier,and do not like the unfavorable distribution of the total *** work considers a supply chain consisting of a supplier and two competing retailers with fairness *** supplier offers a wholesale contract with quantity discount,and the two competing retailers have the options of individual purchasing and group *** a Stackelberg game model,the optimal decisions for the players are obtained for the group buying and the individual purchasing *** results indicate that the supplier benefits more than the retailers from the group buying *** particular,the group buying strategy gives the supplier a higher profit if the operational cost of group buying is below a ***,the fairness concern behavior of the retailers does not always hurt the profit of the ***,the supplier will benefit from the fairness concern behavior of the retailers in individual purchasing when the retailers operates in a relatively poor ***,market competition between the two fairness concerned retailers does not always benefit the *** competition between the fairness concerned retailers reduces the supplier's profit if the group buying strategy is used when the retailers operates in a relatively poor environment.

关键词： Group buying individual purchasing stackelberg game fairness concerns supply chain

Dioxygen Affinities and Catalytic Oxidation Performance of Co （Ⅱ） Complexes with Phenol Ether Bridged Dihydroxamic Acids

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Chinese Chemical Letters 2006年第9期17卷 1259-1262页

作者： Xing Yue WEI sheng ying QIN College of Environmental and Biological Engineering Chongqing Technology and Business University Chongqing 400067 Department of Chemistry Sichuan-University Chengdu 610064

The oxygenation constants and thermodynamic parameter （△H°, △S°） of a series of novel Co （Ⅱ） complexes with phenol ether bridged dihydroxamic acids CoL^1-CoL^6 were measured, their catalytic performance in oxidation of p-xylene to p-toluic acid （PTA） were examined. The modulation of O2-binding capabilities and catalytic oxidation activities by X （X = Cl, OCH3） and Y （Y = H, CH3, Cl） groups bonded to the aromatic rings of the Co （Ⅱ） complexes were investigated.

关键词： Cobalt(Ⅱ) complexes dioxygen affinities catalytic oxidation p-xylene

Inverse Markov Process Based Constrained Dynamic Graph Layout

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Journal of Computer Science & Technology 2021年第3期36卷 707-718页

作者： Shi-ying sheng sheng-Tao Chen Xiao-Ju Dong Chun-Yuan Wu Xiao-Ru Yuan ParisTech Elite Institute of Technology Shanghai Jiao Tong UniversityShanghai 200240China Department of Computer Science and Engineering Shanghai Jiao Tong UniversityShanghai 200240China Key Laboratory of Machine Perception(Ministry of Education) National Engineering Laboratory for Big Data Analysis and ApplicationPeking UniversityBeijing 100080China

In online dynamic graph drawing,constraints over nodes and node pairs help preserve a coherent mental map in a sequence of *** the constraints is challenging due to the requirements of both preserving mental map and satisfying the visual aesthetics of a graph *** existing algorithms basically depend on local changes but fail to do proper evaluations on the global propagation when setting *** solve this problem,we introduce a heuristic model derived from PageRank which simulates the node movement as an inverse Markov process hence to give a global analysis of the layout's change,according to which different constraints can be *** constraints,along with stress function,generate layouts maintaining spatial positions and shapes of relatively stable substructures between adjacent *** demonstrate that our method preserves both structure and position similarity to help users track graph changes visually.

关键词： graph drawing data stream dynamic graph layout

A Method for Measuring the Structure Complexity of Web Application

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Wuhan University Journal of Natural Sciences 2006年第1期11卷 143-150页

作者： MAO Cheng-ying LU Yan-sheng College of Computer Science and Technology Huazhong University of Science and Technology Wuhan 430074Hubei China

The precise and effective measure results of Web applications not only facilitate good comprehension of them, but also benefit to the macro-management of software activities, such as testing, reverse engineering, reuse, etc. The paper exploits some researches on measuring the structure complexity of Web application. Through a deep analysis of the configuration and objects＇ interactions of Web system, two conclusions have been drawn：① A generic Web application consists of static web page, dynamic page, component and database object; ② The main interactions have only three styles, that is static link, dynamic link and call/return relation. Based on analysis and modeling of the content of a Web page （static or dynamic）, complexity measure methods of both control logic of script and nesting of HTML code are further discussed. In addition, two methods for measuring the complexity of inte〉page navigation are also addressed by modeling the inte〉page navigation behaviors of Web application via WNG graph.

关键词： structure complexity measure DD graph,HTree tree WNG graph

Monitor of Polymerization of Inverse Microemulsions Containing Methyl Methacrylate and Acrylic Acid

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Chinese Chemical Letters 2006年第2期17卷 247-250页

作者： Xiao LI sheng Ping XIA Wei Jie ZENG Wei ying ZHANG sheng Xiong DONG College of Chemistry and Chemical Engineering FuzhouUniversity Fuzhou350002

The polymerization of the inverse microemulsions composed of methyl methacrylate,acrylic acid, sodium dodecyl sulfate and water was monitored by refractometer, conductometer and time-resolved light scattering device. The results showed that refractive index, conductivity or intensity distribution of scattered light changed along with polymerization, and different processes of polymerization could be identified.

关键词： Polymerization monitoring inverse microemulsion methyl methacrylate.