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STOCHASTIC VARIATIONAL INEQUALITY APPROACHES TO THE STOCHASTIC GENERALIZED NASH EQUILIBRIUM WITH SHARED CONSTRAINTS

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Journal of Computational Mathematics 2023年第3期41卷 415-436页

作者： yanfang zhang College of Science Minzu University of ChinaBeijing 100081China

In this paper,we consider the generalized Nash equilibrium with shared constraints in the stochastic environment,and we call it the stochastic generalized Nash *** stochastic variational inequalities are employed to solve this kind of problems,and the expected residual minimization model and the conditional value-at-risk formulations defined by the residual function for the stochastic variational inequalities are *** show the risk for different kinds of solutions for the stochastic generalized Nash equilibrium by the conditional value-at-risk *** properties of the stochastic quadratic generalized Nash equilibrium are *** smoothing approximations for the expected residual minimization formulation and the conditional value-at-risk formulation are ***,we establish the gradient consistency for the measurable smoothing functions and the integrable functions under some suitable conditions,and we also analyze the properties of the *** results for the applications arising from the electricity market model illustrate that the solutions for the stochastic generalized Nash equilibrium given by the ERM model have good properties,such as robustness,low risk and so on.

关键词： Stochastic generalized Nash equilibrium Stochastic variational inequalities Expected residual minimization model CVaR formulation Gradient consistency

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嬗变与发展:我国劳动教育政策的逻辑审视

继续教育研究 2025年第2期 86-91页

作者：张艳芳朱平长沙航空职业技术学院马克思主义学院湖南长沙410124

我国劳动教育政策经历了促进生产建设的政策价值取向期、服务阶级斗争的政策价值取向期、助力经济发展的政策价值取向期、凸显素质教育的政策价值取向期、强化“五育并举”的政策价值取向期等五个历史嬗变阶段。呈现出以下演进特征:在... 详细信息

我国劳动教育政策经历了促进生产建设的政策价值取向期、服务阶级斗争的政策价值取向期、助力经济发展的政策价值取向期、凸显素质教育的政策价值取向期、强化“五育并举”的政策价值取向期等五个历史嬗变阶段。呈现出以下演进特征:在政策产生机制上,社会需求驱动政策形成;在政策价值目标上,思想政治教育功能贯穿始终;在政策话语分析上,经济话语主导多元参与;在政策实施保障上,政府主导自上而下推动。瞻望劳动教育政策的发展趋势,劳动教育政策的设计规划应凸显科学性理解、目标确立应坚持政治性引领、话语规则应鼓励多元性参与、执行实施应注重系统性推进。

关键词：劳动教育政策劳动教育政策演进

Topological Classification of Fractal Squares

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Wuhan University Journal of Natural Sciences 2020年第2期25卷 105-108页

作者： zhang yanfang zhang Suxiang Science and Technology College Hubei University of Art and ScienceXiangyang 441025HubeiChina

A fractal square F is essentially a planar self-similar set satisfying the set equation F=(F+D)/n with n≥2 and D?{0,1,...,n-1}~*** this paper,we study the topological classification of fractal squares in the case of ... 详细信息

关键词： fractal square topological property topological classification

Connectedness of Invariant Sets of Graph-Directed IFS

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Wuhan University Journal of Natural Sciences 2016年第5期21卷 445-447页

作者： zhang yanfang Science and Technology College Hubei University of Art and Science

In this paper, we study the connectedness of the invariant sets of a graph-directed iterated function system（IFS）. For a graph-directed IFS with N states, we construct N graphs. We prove that all the invariant sets are connected, if and only if all the N graphs are connected; in this case, the invariant sets are all locally connected and path connected. Our result extends the results on the connectedness of the self-similar sets.

关键词： self-similar set graph-directed iterated function system(IFS) connectedness locally connectedness

Envelopes of Two Families of Chords of an Ellipse

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Wuhan University Journal of Natural Sciences 2021年第5期26卷 365-368页

作者： zhang yanfang SUN Peiru School of Science Huzhou UniversityHuzhou 313000ZhejiangChina

In this paper, we investigate the envelope of two special families of chords of an ellipse and prove that the envelopes are also ellipses. The obtained results are important for computerized design of the generation o... 详细信息

关键词： envelope chord family ellipse computerized design

Zika Virus Baculovirus-Expressed Virus-Like Particles Induce Neutralizing Antibodies in Mice

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Virologica Sinica 2018年第3期33卷 213-226页

作者： Shiyu Dai Tao zhang yanfang zhang Hualin Wang Fei Deng State Key Laboratory of Virology Wuhan Institute of Virology Chinese Academy of Sciences

The newly emerged mosquito-borne Zika virus(ZIKV) strains pose a global challenge owing to its ability to cause microcephaly and neurological disorders. Several ZIKV vaccine candidates have been proposed, including inactivated and live attenuated virus vaccines, vector-based vaccines, DNA and RNA vaccines. These have been shown to be efficacious in preclinical studies in mice and nonhuman primates, but their use will potentially be a threat to immunocompromised individuals and pregnant women. Virus-like particles(VLPs) are empty particles composed merely of viral proteins, which can serve as a safe and valuable tool for clinical prevention and treatment strategies. In this study, we used a new strategy to produce ZIKV VLPs based on the baculovirus expression system and demonstrated the feasibility of their use as a vaccine candidate. The pre-membrane(prM) and envelope(E) proteins were co-expressed in insect cells and selfassembled into particles similar to ZIKV. We found that the ZIKV VLPs could be quickly and easily prepared in large quantities using this system. The VLPs were shown to have good immunogenicity in immunized mice, as they stimulated high levels of virus neutralizing antibody titers, ZIKV-specific IgG titers and potent memory T cell responses. Thus, the baculovirus-based ZIKV VLP vaccine is a safe, effective and economical vaccine candidate for use against ZIKV.

关键词： ZIKV Baculovirus expression system. Virus-like particles (VLPs) Neutralizing antibodies

Species-specific Response of Photosynthesis to Burning and Nitrogen Fertilization

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Journal of Integrative Plant Biology 2008年第5期50卷 565-574页

作者： yanfang zhang Shuli Niu Wenhua Xu Yi Han State Key Laboratory of Vegetation and Environmental Change Institute of Botany Chinese Academy of Sciences Beijing 100093 China Graduate University of Chinese Academy of Sciences Beijing 100049 China

The present study was conducted to examine photosynthetic characteristics of three dominant grass species （Agropyron cristatum, Leymus chinensis, and Cleistogenes squarrosa） and their responses to burning and nitrogen fertilization in a semiarid grassland in northern China. Photosynthetic rate （Pn）, stomatal conductance （gs）, and water use efficiency （WUE） showed strong temporal variability over the growing season. C. squarrosa showed a significantly higher Pn and WUE than A. cristatum and L. chinensis. Burning stimulated Pn of A. cristatum and L. chinensis by 24-59% （P 〈 0.05） in the early growing season, but not during other time periods. Light-saturated photosynthetic rate （Pmax） in A. cristatum and the maximum apparent quantum yield （Фmax） in A. cristatum and L. chinensis were significantly enhanced by burning （16-67%） in both the fertilized and unfertilized plots. The main effect of burning on Pn, Pmax and Фmax was not significant in C. squarrosa. The burning-induced changes in soil moisture could explain 51% （P= 0.01） of the burning-induced changes in Pn of the three species. All three species showed positive responses to N fertilization in terms of Pn, Pmax, and Фmax. The stimulation of Pn under N fertilization was mainly observed in the early growing season when the soil extractable N content was significantly higher in the fertilized plots. The N fertilization-induced changes in soil extractable N content could explain 66% （P = 0.001） of the changes in Pn under N fertilization. The photosynthetic responses of the three species indicate that burning and N fertilization will potentially change the community structure and ecosystem productivity in the semiarid grasslands of northern China.

关键词： Agropyron cristatum burning Cleistogenes squarrosa Leymus chinensis nitrogen fertilization photosynthesis

A DFT Investigation on the Electronic Structures and Au Adatom Assisted Hydrogenation of Graphene Nanoflake Array

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Chemical Research in Chinese Universities 2021年第5期37卷 1110-1115页

作者： SONG Yang TAO Lei zhang yanfang PAN Jinbo DU Shixuan Institute of Physics and School of Physical Sciences University of Chinese Academy of SciencesChinese Academy of SciencesBeijing100190P.R.China Beijing National Laboratory for Condensed Matter Physics Institute of Physics of Chinese Academy of SciencesBeijing100190P.R.China CAS Center for Excellence in Topological Quantum Computation Beijing100190P.R.China Songshan Lake Materials Laboratory Dongguan523808P.R.China

Graphene nanoribbons with zigzag edges(ZGNRs)have attracted much attention for their spin-polarized edge states predicted more than 15 years *** the ZGNRs are fabricated on metal substrates using molecular precursors,due to their strong coupling with metal substrates,experimental detection of the spin-polarized edge states is still ***,we design a partially hydrogenated graphene(PHGr).

关键词： polarized Hydrogenation states

Structure and receptor-binding properties of an airborne transmissible avian infl uenza A virus hemagglutinin H5(VN1203mut)

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Protein & Cell 2013年第7期4卷 502-511页

作者： Xishan Lu Yi Shi Wei zhang yanfang zhang Jianxun Qi George F Gao College of Veterinary Medicine China Agricultural UniversityBeijing 100193China Research Network of Immunity and Health(RNIH) Beijing Institutes of Life ScienceChinese Academy of SciencesBeijing 100101China CAS Key Laboratory of Pathogenic Microbiology and Immunology Institute of MicrobiologyChinese Academy of SciencesBeijing 100101China University of Chinese Academy of Sciences Chinese Academy of SciencesBeijing 100049China Laboratory of Protein Engineering and Vaccines Tianjin Institute of Industrial BiotechnologyChinese Academy of SciencesTianjin 300308China National Institute for Viral Disease Control and Prevention Chinese Center for Disease Control and Prevention(China CDC)Beijing 102206China

Avian infl uenza A virus continues to pose a global threat with occasional H5N1 human infections,which is em-phasized by a recent severe human infection caused by avian-origin H7N9 in *** these viruses do not transmit effi ciently in human *** a few ami-no acid substitutions of the hemagglutinin H5 protein in the laboratory,two H5 mutants have been shown to obtain an air-borne transmission in a mammalian ferret *** in this study one of the mutant H5 proteins devel-oped by Kawaoka’s group(VN1203mut)was expressed in a baculovirus system and its receptor-binding properties were *** herein show that the VN1203mut had a dramatically reduced binding affi nity for the avianα2,3-linkage receptor compared to wild type but showed no detectable increase in affi nity for the humanα2,6-linkage receptor,using Surface Plasmon Resonance ***,the crystal structures of the VN1203mut and its complexes with either human or avian receptors demon-strate that the VN1203mut binds the human receptor in the same binding manner(cis conformation)as seen for the HAs of previously reported 1957 and 1968 pandemic influenza *** receptor binding and crystallo-graphic data shown here further confi rm that the ability to bind the avian receptor has to decrease for a higher hu-man receptor binding affi *** the Q226L substitution is shown important for obtaining human receptor binding,we suspect that the newly emerged H7N9 binds human receptor as H7 has a Q226L substitution.

关键词： airborne transmission H5 avian infl uenza structure receptor binding