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Network-based structure optimization method of the anti-aircraft system

Journal of Systems Engineering and Electronics 2023年第2期34卷 374-395页

作者： ZHAO Qingsong DING Junyi LI Jichao LI Huachao XIA Boyuan College of Systems Engineering National University of Defense TechnologyChangsha 410073China international Office of cooperation and exchanges National University of Defense TechnologyChangsha 410073China

The anti-aircraft system plays an irreplaceable role in modern combat. An anti-aircraft system consists of various types of functional entities interacting to destroy the hostile aircraft moving in high speed. The connecting structure of combat entities in it is of great importance for supporting the normal process of the system. In this paper, we explore the optimizing strategy of the structure of the anti-aircraft network by establishing extra communication channels between the combat ***, the thought of combat network model(CNM) is borrowed to model the anti-aircraft system as a heterogeneous network. Secondly, the optimization objectives are determined as the survivability and the accuracy of the system. To specify these objectives, the information chain and accuracy chain are constructed based on CNM. The causal strength(CAST) logic and influence network(IN) are introduced to illustrate the establishment of the accuracy chain. Thirdly, the optimization constraints are discussed and set in three aspects: time, connection feasibility and budget. The time constraint network(TCN) is introduced to construct the timing chain and help to detect the timing consistency. Then, the process of the multi-objective optimization of the structure of the anti-aircraft system is ***, a simulation is conducted to prove the effectiveness and feasibility of the proposed method. Non-dominated sorting based genetic algorithm-Ⅱ(NSGA2) is used to solve the multiobjective optimization problem and two other algorithms including non-dominated sorting based genetic algorithm-Ⅲ(NSGA3)and strength Pareto evolutionary algorithm-Ⅱ(SPEA2) are employed as comparisons. The deciders and system builders can make the anti-aircraft system improved in the survivability and accuracy in the combat reality.

关键词： anti-aircraft system optimization combat network model(CNM) causal strength(CAST)logic influence network(IN) time constraint network(TCN)

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The relationship between compartment models and their stochastic counterparts:A comparative study with examples of the COVID-19 epidemic modeling

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Journal of Biomedical Research 2024年第2期38卷 175-188,I0016-I0018页

作者： Ziyu Zhao Yi Zhou Jinxing Guan Yan Yan Jing Zhao Zhihang Peng Feng Chen Yang Zhao Fang Shao Department of Biostatistics School of Public HealthNanjing Medical UniversityNanjingJiangsu 211166China Nanjing Hanwei Public Health Research Institute Co. LtdNanjingJiangsu 210005China China international cooperation Center for Environment and Human Health Center for Global HealthNanjing Medical UniversityNanjingJiangsu 211166China The Center of Biomedical Big Data and the Laboratory of Biomedical Big Data Nanjing Medical UniversityNanjingJiangsu 211166China Jiangsu Key Lab of Cancer Biomarkers Prevention and TreatmentCollaborative Innovation Center for Cancer Personalized MedicineNanjing Medical UniversityNanjingJiangsu 211166China

Deterministic compartment models(CMs)and stochastic models,including stochastic CMs and agent-based models,are widely utilized in epidemic ***,the relationship between CMs and their corresponding stochastic models is not well *** present study aimed to address this gap by conducting a comparative study using the susceptible,exposed,infectious,and recovered(SEIR)model and its extended CMs from the coronavirus disease 2019 modeling *** demonstrated the equivalence of the numerical solution of CMs using the Euler scheme and their stochastic counterparts through theoretical analysis and *** on this equivalence,we proposed an efficient model calibration method that could replicate the exact solution of CMs in the corresponding stochastic models through parameter *** advancement in calibration techniques enhanced the accuracy of stochastic modeling in capturing the dynamics of ***,it should be noted that discrete-time stochastic models cannot perfectly reproduce the exact solution of continuous-time ***,we proposed a new stochastic compartment and agent mixed model as an alternative to agent-based models for large-scale population simulations with a limited number of *** model offered a balance between computational efficiency and *** results of this research contributed to the comparison and unification of deterministic CMs and stochastic models in epidemic ***,the results had implications for the development of hybrid models that integrated the strengths of both ***,the present study has provided valuable epidemic modeling techniques and their practical applications for understanding and controlling the spread of infectious diseases.

关键词： compartment models agent-based models compartment-agent mixed models comparative study COVID-19

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Activity theory and second language acquisition

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Sino-US English Teaching 2008年第5期5卷 19-23页

作者： WU Wen Division of international cooperation and exchanges Yangtze Normal University Chongqing 408100 China

As recently as 1999, activity theory, one of the sub-theories of sociocultural theory, was described as ＂a well kept secret＂, now is one of the most popular theories in second language acquisition. In this article, the author will present a few research projects that adopt activity theory to investigate language learning, to show how activity theory brings new insights into language acquisition.

关键词： activity theory second language acquisition activity sociocultural theory

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A Multi-Feature Weighting Based K-Means Algorithm for MOOC Learner Classification

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Computers, Materials & Continua 2019年第5期59卷 625-633页

作者： Yuqing Yang Dequn Zhou Xiaojiang Yang College of Economics and Management Nanjing University of Aeronautics and AstronauticsNanjing211106China Office of international cooperation and exchanges Nanjing University of Finance&EconomicsNanjing210046China Jiangsu Guidgine Educational Evaluation Inc. Nanjing210046China international Education Office of Centennial College TorontoP.O.Box 631Canada

Massive open online courses(MOOC)have recently gained worldwide attention in the field of *** manner of MOOC provides a new option for learning various kinds of knowledge.A mass of data miming algorithms have been proposed to analyze the learner’s characteristics and classify the learners into different ***,most current algorithms mainly focus on the final grade of the learners,which may result in an improper *** overcome the shortages of the existing algorithms,a novel multi-feature weighting based K-means(MFWK-means)algorithm is proposed in this *** between the widely used feature grade and other features are first investigated,and then the learners are classified based on their grades and weighted features with the proposed MFWK-means *** results with the Canvas Network Person-Course(CNPC)dataset demonstrate the effectiveness of our ***,a comparison between the new MFWK-means and the traditional K-means clustering algorithm is implemented to show the superiority of the proposed method.

关键词： Multi-feature weighting learner classification MOOC clustering

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Congratulations on the success of the 6th international Photonics and OptoElectronics Meetings （POEM 2013）

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Frontiers of Optoelectronics 2013年第3期6卷 354-356页

作者： Office of Global academic exchanges of Wuhan National Laboratory for Optoelectronics ,Wuhan ,China Office of Global academic exchanges of Wuhan National Laboratory for Optoelectronics Wuhan China

On May 25 2013, the 6th international Photonics and OptoElectronics Meetings （POEM 2013） were grandly opened at Wuhan National Laboratory for Optoelectronics （WNLO）, Huazhong University of Science and Technology （HUST） Wuhan, China. POEM 2013, co-organized by WNLO and Optical Society of America （OSA）, includes two OSA Topical Meetings-Advanced Optoelectronics for Energy and Environment （AOEE） and Nanophotonics, Nanoelectronics and Nanosensor （N3）. About 300 attendees from America, Australia, Canada, Japan, Germany, Korea, China, etc. are attracted to the conference, and these attendees include distinguished researchers, experts, technicians, entrepreneurs, investors,

关键词：纳米光子学电子学会国际华中科技大学国家实验室能源与环境纳米电子学纳米传感器

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Death or Rebirth in The Snows of Kilimanjaro——A Literary Stylistics Reading

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海外英语 2013年第12X期 177-180页

作者：蒋礼会胥迟英西南大学外国语学院 The international cooperation & exchanges of Chongqing Normal University

Scholars have studied The Snows of Kilimanjaro from different angles, but few have focused on the stylistic features of it. If approaching The Snows of Kilimanjaro from the perspective of literary stylistics, readers will find the following: The fiction seems fragmented and difficult to understand, but the employment of repetition, parallelism, symbolism, metaphor, pun, oxymoron and stream of consciousness technique makes it a unified whole. The repetition of"death"by Harry himself and the use of symbolism lead readers to understand the final ending of Harry: death out of gangrene. Also, through repetition, a character that has no love and who regrets over his waste of talent is presented to the readers. The use of stream of consciousness technique provides readers with a window into Harry's past life and his deeply poignant personal regret. Harry has the potentiality to make achievements in writing, but he, disillusioned by war, wasted his talent due to lying, laziness, incontinence, and indulgence in comfort life. He had died spiritually even before he got infected. The rescue by the plane is just Harry's illusion, and the rebirth of him may only be the author or the readers'expectation.

关键词： literary stylistics stylistics features death rebi

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Serving High-Level Opening up with "TaxExpress"

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Belt and Road Initiative Tax Journal 2024年第1期 97-105页

作者： international Taxation Department, State Taxation Administration,the People's Republic of China international Taxation Department State Taxation Administrationthe People's Republic of China

Over the past decade,the Chinese tax authorities have been actively supporting the development of the Belt and Road Initiative,by creating a unique cross-border tax and fee service model with Chinese characteristics,which has laid a solid foundation for the establishment of the "TaxExpress" cross-border service *** October 2023,the State Taxation Administration of China(STA) officially launched the "TaxExpress" brand,focusing on one service matrix,two service teams,three service mechanisms,and four knowledge *** brand aims to enhance cooperation between ministries and commissions,promote international exchanges,and establish a framework for effective cross-border tax and fee *** forward,the STA will continue to leverage existing resources to support high-level opening up,by enhancing brand value,improving measures for international tax and fee services,expanding cross-border tax and fee services,strengthening professional talent teams,so as to develop a cross-border tax and fee service system that combines Chinese characteristics with international best practices.

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A Route for Asia-Europe Financial cooperation

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Beijing Review 2016年第17期59卷 38-39页

作者： Zhang Monan China Center for international Economic exchanges

As hosts to the world＇s major econo- mies and to the origins of Eastern and Western civilizations, Asia andEurope are the main forces in maintaining world peace, boosting joint development and promoting human progress. Promoting increased financial cooperation between Asia and Europe is pivotal to secure a robust economic recovery and create new vitality for economic growth in both regions.

关键词：合作路线世界和平经济复苏人类进步经济增长文明欧洲

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Promote Shanghai Spirit and Spark People's Wisdom for building a Community with a Shared Future for Mankind-A Summary of the First Shanghai cooperation Organization People's Forum

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international Understanding 2018年第2期 22-28页

作者： Liu Zhenzhong Ma Jiatai(译) China NGO Network for international exchanges 不详

The whole year＇s work depends on a good startin spring. On 9 to 10 April 2018, the historic cityXi＇an witnessed the staging of the First People＇sForum of Shanghai cooperation Organization（SCO）. The forum was jointly staged by ChinaNGO Network for international exchanges andthe People＇s Government of Shaanxi Province,in an aim to contribute people＇s wisdom to theShanghai cooperation Organization QingdaoSummit which will be held in June 2018 bycollecting people＇s wits, reflecting people＇swishes, building consensus among the people.

关键词：中国上海合作组织发展现状国际交流

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“一带一路”倡议下的次区域与城市高质量发展

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China City Planning Review 2024年第1期33卷 4-21页

作者：王兴平方煜赵敏 Long Yunjun Wang Dengtao Sun Ting Dipl.-Ing.Dita Leyh Liu Jiaxian School of Architecture Southeast University international Cooperative Research Center for Sustainable Development and Planning of Industrial Parks international Urban Planning Branchof the Urban Planning Society of China 不详

Themed"Better Sub-Regional and Urban Development from the Perspective of the Belt and Road Initiative,"the 2023 Annual Conference of the international Urban Planning Branch of the Urban Planning Society of China(UPSC)was successfully held in Kunming from Jun.23 to 25,*** conference,organized by the international Urban Planning Branch and hosted by the School of Architecture and Planning,Yunnan University,coincided with the 1ou anniversary of the Belt and Road *** it aimed to share new insights and practices related to sub-regional cooperation,sustainable development,global industrial restructuring,urban vitality,cross-border cultural exchanges,and more,both in China and ***,the conference presented in-depth research and analysis on the strategic advantages of the Belt and Road Initiative and held dialogues and case studies on high-quality sub-regional and urban development *** goal was to provide innovative perspectives for China to implement high-quality cross-border collaboration under the framework of the Belt and Road *** keynote speeches given at the conference have been collected by China City Planning Review and meticulously proofread by the respective speaker.

关键词：一带一路 border urban

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