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A PROXIMAL POINT ALGORITHM FOR A SYSTEM OF GENERALIZED MIXED VARIATIONAL INEQUALITIES

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Journal of Systems Science & Complexity 2012年第5期25卷 964-972页

作者： bo wan Xuegang ZHAN Department of Mathematics and Statistics Chongqing Technology and Business University School of Accountancy Chongqing Technology and Business University

This paper introduces and considers a new system of generalized mixed variational inequal- ities in a Hilbert space, which includes many new and known systems of variational inequalities and generalized variational inequalities as special cases. By using the two concepts of η-subdifferential and η-proximal mappings of a proper function, the authors try to demonstrate that the system of generalized mixed variational inequalities is equivalence with a fixed point problem. By applying the equivalence, a new and innovative η-proximal point algorithm for finding approximate solutions of the system of generalized mixed variational inequalities will be suggested and analyzed. The authors also study the convergence analysis of the new iterative method under much weaker conditions. The results can be viewed as a refinement and improvement of the previously known results for variational inequalities.

关键词： Lipschitz continuity proximal point algorithms relaxed (γ τ)-cocoercivity system ofgeneralized mixed variational inequalities.

The influence of Tethyan evolution on changes of the Earth's past environment

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Science China Earth Sciences 2023年第12期66卷 2653-2665页

作者： bo wan Fuyuan WU Rixiang ZHU State Key Laboratory of Lithospheric Evolution Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China

Understanding changes in Earth's past can provide valuable insights into prediction of its *** example is the interactions between the internal and external spheres of *** cyclical northward breakup-drift of Gondwana,driven by the opening and closure of Proto-,Paleo-,and Neo-Tethyan oceans,facilitated the transfer of landmasses from the southern to the northern hemisphere,traversing the tropic *** have observed a compelling correlation between episodic increases in landmass area within the tropic regions(those lying at less than 20°latitude)and a subsequent temperature decrease during the three major glacial periods in the last 500 million *** phenomenon can be attributed to low latitude regions receiving more solar energy influx on Earth's surface than high latitude *** addition,an increase of landmass in tropic regions(low latitude)attenuates the net energy absorption by the Earth's surface,consequently impeding the conduction and convection of absorbed energy toward the *** result is a decrease in global surface *** tropic regions,benefiting from abundant sunlight,create an ideal environment for the proliferation of marine plankton *** species are important in the generation of organic-rich *** biological debris is therefore deposited on continental margins when a continent drifts across the tropic *** creates favorable conditions for future hydrocarbon and reservoir *** subduction of organic-rich sediments during the closure of the Tethyan oceans results in the generation of mafic arc magmas with low oxygen *** chemical environment helps the mineralization of reduced-type ore deposits such as tungsten,tin,and ***-driven plate tectonics in the Tethys realm changes the distribution of oceans and landmass,subsequently affecting the balance and distribution of solar energy across Earth's *** changes trigger consequential environmental shif

关键词： Tethyan geodynamics Earth system Change of sea-land distribution Reduced ore deposit Hydrocarbon

Evaluating changes in business distribution within urban rail transit hubs in Beijing via Point of Interest (POI) data analysis (2008-2020)

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Frontiers of Architectural Research 2024年第2期13卷 305-318页

作者： bo wan Dongyang wan Qiang Sheng School of Architecture and Design Beijing Jiaotong UniversityBeijing 100044China

This paper,set against the backdrop of expanding urban rail networks and dynamic urban development,focuses on the distribution and evolution of commercial Points of Interests(POIs)within the central urban rail transit areas of *** study examines data from four different years-2008,2013,2017,and 2020-to observe the temporal evolution of commercial *** identifies stable explanatory variables affecting the distribution and evolution of commercial POIs,which include rail transit accessibility,characteristics of the working and residential population distribution around stations,and the construction intensity in the vicinity of station *** statistical analysis and model building,relatively stable linear regression equations were established,with R2 values generally maintained above 0.5(except for 2017).The study advances our understanding of the influence of rail transit on urban commercial spaces and how this influence shifts with temporal and urban developmental *** elucidates the correlation between changes in the number of businesses and spatial configuration,offering insights and information for urban planners and policy *** research also serves as a model for exploring the interplay between urban rail transit and commercial spaces in other major cities.

关键词： Urbanrail transit areas Spatial configuration Distributionand evolution of commercial POls

Synthesis of Novel Scolopendra-type Polydodecyloxybenzoyl[1,5]-diazocine as New Material for Optical Sensor

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Chinese Journal of Polymer Science 2018年第6期36卷 736-741页

作者： Ya-Nan Liu Jian-Zhong Li Xiao-bo wan College of Chemistry and Pharmaceutical Sciences Qingdao Agricultural UniversityQingdao 266109China Qingdao institute of Bioprocess Technology Chinese Academy of ScienceQingdao 266101China

A new scolopendra-type polymer of polydodecyloxybenzoyl[1,5]-diazocine（PDBD） was designed and prepared using 2,5-bis（4-（dodecyloxy）-benzoyl）terephthaloyl azide with trifluoroacetic acid（TFA） via one-pot reaction in good yields. The structure of polymer was characterized using ~1 H-NMR, ^（13） C-NMR and MALDI-TOF spectra. The polymer PDBD exhibits good thermal stability as measured by TGA and DSC, and can be dissolved well in common organic solvents such as chloroform and tetrahydrofuran. In addition, UV-Vis spectral studies indicate that the polymer PDBD shows unique optical property changes（protonation/deprotonation） in the different trifluoroacetic acid environments. The new polymer is expected to be utilized as an optical functional material for fabricating optical sensors in environmental and biological fields.

关键词： Diazocine Scolopendra-type polymer Trifluoroacetic acid UV-Vis

Subduction tectonics *** tectonics——Discussion on driving forces for plate motion

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Science China Earth Sciences 2020年第3期63卷 315-328页

作者： Ling CHEN Xu wanG Xiaofeng LIANG bo wan Lijun LIU State Key Laboratory of Lithospheric Evolution Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China CAS Center for Excellence in Tibetan Plateau Earth Sciences Beijing 100101China University of Chinese Academy of Sciences Beijing 100049China Innova tion Academy for Earth Science Chinese Academy of SciencesBeijing 100029China Department of Geology University of Illinois at Urbana-ChampaignChampaign 61820USA

Plate tectonics describes the horizontal motions of lithospheric plates,the Earths outer shell,and interactions among them across the Earths *** the establishment of the theory of plate tectonics about half a century ago,considerable debates have remained regarding the driving forces for plate *** early"bottom up"view,i.e.,the convecting mantledriven mechanism,states that mantle plumes originating from the core-mantle boundary act at the base of plates,accelerating continental breakup and driving plate *** the present,however,the"Top down"idea is more widely accepted,according to which the negative buoyancy of oceanic plates is the dominant driving force for plate motion,and the subducting slabs control surface tectonics and mantle *** this regard,plate tectonics is also known as subduction tectonics."Top down"tectonics has received wide supports from numerous geological and geophysical *** the other hand,recent studies indicate that the acceleration/deceleration of individual plates over the million-year timescale may reflect the effects of mantle *** is also suggested that surface uplift and subsidence within stable cratonic areas are correlated with plumerelated magmatic activities over the hundred-million-year *** the global scale,the cyclical supercontinent assembly and breakup seem to be coupled with superplume activities during the past two billion *** correlations over various spatial and temporal scales indicate the close relationship and intensive interactions between plate tectonics and plume tectonics throughout the history of the Earth and the considerable influence of plumes on plate ***,we can acquire a comprehensive understanding of the driving forces for plate motion and operation mechanism of the Earth's dynamic system only through joint analyses and integrated studies on plate tectonics and plume tectonics.

关键词： Driving forces for plate motion,Negative buoyancy of plates Subduction tectonics Plume tectonics

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BIOCELL 2020年第2期44卷 237-246页

作者： YAQUN HONG bo wan XIAOFAN LI Fujian Institute of Hematology Fujian Provincial Key Laboratory on HematologyDepartment of HematologyFujian Medical University Union HospitalFuzhou350000China Union Clinical Medical Colleges Fujian Medical UniversityFuzhou350000China Faculty of Life Sciences and Medicine King’s College LondonLondonUK INSERM U1160 Hopital Saint LouisUniversitéParis DiderotSorbonne Paris CitéParisFrance

Most studies focus on the adaptive immune cells in the GVHD pathogenesis,while little is known about innate immune cells in GVHD occurrence and development,especially ***,a higher incidence of graft versus host disease(GVHD)is also found in the elderly *** advances have been made in the modification of macrophages influenced by the inflamm-ageing,there is still no review on the role of macrophages in GVHD and the association between GVHD and the altered macrophages by *** this review,we focus on the potential age-related modifications of macrophage in GVHD,which contributes to the change of morbidity and mortality of *** literature review,we found that the infiltration of macrophages is associated with GVHD and macrophages are modified in inflamm-ageing state,including the proliferation,migration,phagocytosis,antigen presentation,interaction with other immune cells,and *** suppose that altered macrophage functions in inflamm-ageing state contribute to GVHD in elderly patients.

关键词： Macrophages Inflamm-ageing Graft vs host disease Hematopoietic stem cell transplantation Age Innate immune cells

Magma Replenishment as Revealed by Textural and Geochemical Features of Plagioclase Phenocrysts in Subduction-Related Lavas

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Acta Geologica Sinica(English Edition) 2019年第2期93卷 464-476页

作者： LIU Xiujin LIU Wei XIAO Wenjiao wan bo Key Laboratory of Geochemical Cycling of Carbon and Mercury in the Earth's Critical Zone Institute of Geophysical and Geochemical Exploration Chinese Academy of Geological Sciences Geochemical Research Center of Soil Quality China Geological Survey Key Laboratory of Mineral Resources Institute of Geology and Geophysics Chinese Academy of Sciences Institutions of Earth Science Chinese Academy of Sciences State Key Laboratory of Lithospheric evolution Institute of Geology and Geophysics Chinese Academy of Sciences Xinjiang Research Center fo r Mineral Resources Xinjiang Institute of Geography Chinese Academy of Sciences

Various petrographic features and geochemical characteristics indicative of disequilibrium are preserved in plagioclase phenocrysts from basaltic to andesitic lavas in East Junggar, northwest China. These characteristics indicate that they crystallized in a magma chamber, which was replenished by less differentiated and high-temperature magmas. The petrographic and geochemical features of the plagioclase phenocrysts are interpreted to record responses to changes in temperature, composition and mechanical effect during magma replenishment. Distinct rare earth element(REE) patterns between cores and rims of the same plagioclase crystal suggest derivation from two end-member magmas. From core to rim, plagioclase phenocrysts commonly display sharp fluctuations of anorthite(An) content up to 20, which either correspond to reverse zoning associated with ovoidal cores and resorption surface(PI), or normal zoning with euhedral form and no resorption surface(P2). Plagioclase crystals with diverse textures and remarkably different An content coexist on the scale of a thin-section. Cores of these plagioclases in each sample display a bimodal distribution of An content. From core to rim in PI, concentrations o f FeOT and Sr increase remarkably as An content increases. During magma replenishment, pre-existing plagioclase phenocrysts in the andesitic magma, which were immersed into hotter and less differentiated magmas, were heated and resorbed to form ovoidal cores, and then were overgrown by a thin rim with much higher contents of An, FeO^T and Sr. However, pre-existing plagioclase phenocrysts in the basaltic magma were injected into cooler and more evolved magmas, and were remained as euhedral cores, which were later enclosed by oscillatory zoned rims with much lower contents of An, Sr and Ba.

关键词： magma replenishment resorption REE pattern plagioclase phenocryst East Junggar

Preparation of double-sided biaxially textured magnesium oxide thin films

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Rare Metals 2023年第6期42卷 2075-2080页

作者： Hao Tang Yin-Chang Ma Rui-Peng Zhao bo-wan Tao State Key Laboratory of Electronic Thin Films and Integrated Devices University of Electronic Science and Technology of ChinaChengdu610054China

A high-efficiency system was designed as an improvement in conventional reel-to-reel system for ion beam-assisted deposition(IBAD) and homo-epitaxy of double-sided biaxially textured MgO thin *** system enables Hastelloy tape to flip automatically and go through the deposition area twice in order to deposit MgO on its both *** this system,the output of doublesided IB AD-MgO is elevated to be 30 m·h^(-1).A 30-m tapes with 10-nm-thick double-sided biaxially textured MgO thin films was successfully made.X-ray diffraction(XRD) and atomic force microscope(AFM) show identical quality of MgO thin films on both *** yield full width at half maximum values of out-of-plane texture and in-plane texture on both sides are approximately 3.1° and 5.3°,***,the influence of ion beam flux and deposition rate on the texture of thin film was investigated.A process window in which biaxial texture can be obtained is found for large-scale production.

关键词： Coated conductors IBAD-MgO Doublesided Automatic flipping

Modeling operation amplifier based on VHDL-AMS for TID effect

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Nuclear Science and Techniques 2016年第2期27卷 64-72页

作者： Jin-hui Liu Quan wang Ying Zhang Gang Liu bo wan Research Institute of Computer Peripherals Xidian University

A model of the operational amplifier based on VHDL-AMS is proposed. According to needs of simulating the total ionizing dose(TID) radiation effect, parameters of operational amplifier are taken into account when the performance is specified. The operational amplifier model used for the TID radiation effect simulation is completed after verifying each modeled parameter. And a parameter for describing the external environment is introduced to make the model combined with TID. Finally, an example is used to illustrate the TID effect on the operational amplifier of MC14573, proving the validity of the model.

关键词： VHDL-AMS 运算放大器总剂量效应操作建模辐射效应电离总剂量 TID