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Zoological Research 2008年第4期29卷 455-458页

作者：邓维安郑哲民韦仕珍河池学院化学与生命科学系广西宜州546300 陕西师范大学动物研究所陕西西安710062

One new species of the genus Tetrix Latreille, Tetrix xiangzhouensis sp. nov. is described, and the male of Bolivaritettix luochengensis deng, Zheng et wei is reported for the first time, New species is similar to Tetrifuchuanensis Zheng, 1998, but differs in a number of ways, Width of vertex equal to or slightly narrower than width of an eye, anterior margin of vertex not protruding beyond eyes, length of a segment in middle of antenna about 7-8 times longer than width, lateral keels of prozona constricted backward, hind process of pronotum reaching two thirds of hind tibia, lower margins of anterior and middle femora ornate with sparse hairs,

关键词： Orthoptera Tetrigoidea Tetrix Bolivaritettix New species China

Identification and Guaranteed Performance Control of Hammerstein Systems over Wireless Channels

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International Journal of Automation and computing 2016年第2期13卷 125-132页

作者： wei-Hua deng Kang Li Jing deng College of Electrical Engineering Shanghai University of Electric Power School of Electronics Electrical Engineering and Computer ScienceQueen's University

The problems of identification and stabilization of a class of Hammerstein systems over a wireless network are investigated in this paper. A new approach for the proof of iterative identification is presented first. Then a guaranteed performance controller is designed to stabilize the system. The effectiveness of the proposed approach is demonstrated by numerical examples.

关键词： Identification guaranteed performance control model-based approach wireless network stochastic delay.

ACCELERATION METHODS OF NONLINEAR ITERATION FOR NONLINEAR PARABOLIC EQUATIONS

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Journal of Computational Mathematics 2006年第3期24卷 412-424页

作者： Guang-wei Yuan Xu-deng Hang Laboratory of Computational Physics Institute of Applied Physics and Computational Mathematics P.O.Box 8009 Beijing 100088 China

This paper discusses the accelerating of nonlinear parabolic equations. Two iterative methods for solving the implicit scheme new nonlinear iterative methods named by the implicit-explicit quasi-Newton （IEQN） method and the derivative free implicit-explicit quasi-Newton （DFIEQN） method are introduced, in which the resulting linear equations from the linearization can preserve the parabolic characteristics of the original partial differential equations. It is proved that the iterative sequence of the iteration method can converge to the solution of the implicit scheme quadratically. Moreover, compared with the Jacobian Free Newton-Krylov （JFNK） method, the DFIEQN method has some advantages, e.g., its implementation is easy, and it gives a linear algebraic system with an explicit coefficient matrix, so that the linear （inner） iteration is not restricted to the Krylov method. Computational results by the IEQN, DFIEQN, JFNK and Picard iteration methods are presented in confirmation of the theory and comparison of the performance of these methods.

关键词： Nonlinear parabolic equations Difference scheme Newton iterative methods.

Advances in the construction of diverse SuFEx linkers

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National Science Review 2023年第6期10卷 226-244页

作者： Daming Zeng wei-Ping deng Xuefeng Jiang Shanghai Frontiers Science Center of Optogenetic Techniques for Cell Metabolism School of Pharmacy East China University of Science and Technology Shanghai Key Laboratory of Green Chemistry and Chemical Process School of Chemistry and Molecular Engineering East China Normal University

Sulfur fluoride exchange(SuFEx),a new generation of click chemistry,was first presented by Sharpless,Dong and co-workers in *** to the high stability and yet efficient reactivity of the SⅥ-F bond,SuFEx has found widespread applications in organic synthesis,materials science,chemical biology and drug discovery.A diverse collection of SuFEx linkers has emerged,involving gaseous SO2F2and SOF4hubs;SOF4-derived iminosulfur oxydifluorides;O-,N-and C-attached sulfonyl fluorides and sulfonimidoyl fluorides;and novel sulfondiimidoyl *** review summarizes the progress of these SuFEx connectors,with an emphasis on analysing the advantages and disadvantages of synthetic strategies of these connectors based on the SuFEx concept,and it is expected to be beneficial to researchers to rapidly and correctly understand this field,thus inspiring further development in SuFEx chemistry.

关键词： SuFEx SuFEx linker SVI–F bond synthetic strategy

Review of Operational Control Strategy for DC Microgrids with Electric-hydrogen Hybrid Storage Systems

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CSEE Journal of Power and Energy Systems 2022年第2期8卷 329-346页

作者： wei Pei Xue Zhang wei deng Chenghong Tang Liangzhong Yao the Institute of Electrical Engineering Chinese Academy of SciencesBeijing 100190 University of Chinese Academy of Sciences Beijing 100049China the Institute of Electrical Engineering Chinese Academy of SciencesBeijing 100190China the NARI Group Corporation Nanjing 211106China the School of Electrical Engineering and Automation Wuhan UniversityWuhan 430072China

Hydrogen production from renewable energy sources(RESs)is one of the effective ways to achieve carbon peak and carbon *** order to ensure the efficient,reliable and stable operation of the DC microgrid(MG)with an electric-hydrogen hybrid energy storage system(ESS),the operational constraints and static dynamic characteristics of a hydrogen energy storage system(HESS)needs to be fully ***,different hydrogen production systems,using water electrolysis are compared,and the modeling method of the electrolyzer is *** operational control architecture of the DC MG with electric-hydrogen is *** with the working characteristics of the alkaline electrolyzer,the influence of hydrogen energy storage access on the operational mode of the DC MG is *** operational control strategies of the DC MG with electric-hydrogen hybrid ESS are classified and analyzed from four different aspects:static and dynamic characteristics of the hydrogen energy storage system,power distribution of the electric-hydrogen hybrid ESS and the efficiency optimization of hydrogen energy ***,the advantages of a modular hydrogen production system(HPS)are described,and the technical problems and research directions in the future are discussed.

关键词： Hydrogen energy DC microgrid modeling method operation control renewable energy sources

The coupling mechanism between the suitable space and rural settlements considering the effect of mountain hazards in the upper Minjiang River basin

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Journal of Mountain Science 2020年第11期17卷 2774-2783页

作者： LIU Ying deng wei PENG Li The College of Geography and Resources Sichuan Normal UniversityChengdu 610101China

Some settlements were located in unsuitable regions due to limited land resources in mountainous areas,some settlements were even even constructed in areas prone to geological hazards in Southwest ***,it was important to evaluate the spatial appropriateness of a region and determine the areas that were unsuitable for settlements,and then find out the settlements located in unsuitable *** will assist in decision making associated with the relocation of ***,it will be the key to ensure the safety of inhabitants and promoting sustainable development in mountainous *** study explored the coupling mechanism between suitable space and rural settlements in the upper Minjiang River basin,which is an ecologically fragile area with high-frequency of natural ***,we identified relief degree of land surface(RDLS),elevation,and disaster risk as the limiting ***,by determining the thresholds of these limiting factors,we recognized the suitable areas for inhabitation in the upper Minjiang River basin with ***,using the distribution map of rural settlements and that of suitable space,the distribution of rural settlements located at unsuitable area was obtained by coupling relationship ***,an in-depth understanding of this relationship was achieved as follows:(1)The suitable space of the upper Minjiang River basin is 13.7 thousand km2,accounting for 54.9%of the total land space;(2)There were 196 settlements located in the unsuitable area,the total area of these settlements was 125.27 km2,and there were 68000 people in these settlements,accounting for 17.65%of the total population;(3)There were 65 settlements located near mountain hazard areas,accounting for 4.9%of the *** findings suggest that it was necessary to carefully investigate settlements with risks and develop targeted relocation policies to help find the most effective way of using land safely and to good *** details

关键词： Coupling Mechanism Sustainable Development Remote Sensing China

Measuring the beaming angle of GRB 030329 by fitting the rebrightenings in its multiband afterglow

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Research in Astronomy and Astrophysics 2010年第11期10卷 1119-1126页

作者： wei deng Yong-Feng Huang Si-wei Kong Department of Astronomy Nanjing University Nanjing 210093 China Key Laboratory of Modern Astronomy and Astrophysics （Nanjing Univ.） Ministry of EducationNanjing 210093 China

Multiple rebrightenings have been observed in the multiband afterglow of GRB 030329. In particular, a marked and quick rebrightening occurred at about t 1.2 × 10^5 s. Energy injection from late and slow shells seems to be the best interpretation for these rebrightenings. Usually it is assumed that the energy is injected into the whole external shock. However, in the case of GRB 030329, the rebrightenings are so quick that the usual consideration fails to give a satisfactory fit to the observed light curves. Actually, since these late/slow shells freely coast in the wake of the external shock, they should be cold and may not expand laterally. The energy injection then should only occur at the central region of the external shock. Considering this effect, we numerically re-fit the quick rebrightenings observed in GRB 030329. By doing this, we were able to derive the beaming angle of the energy injection process. Our result, with a relative residual of only 5% - 10% during the major rebrightening, is bet- ter than any previous modeling. The derived energy injection angle is about 0.035. We assume that these late shells are ejected by the central engine via the same mechanism as those early shells that produce the prompt gamma-ray burst. The main difference is that their velocities are much slower, so that they catch up with the external shock relatively late and are manifested as the observed quick rebrightenings. If this were true, then the derived energy injection angle can give a good measure of the beaming angle of the prompt γ-ray emission. Our study may hopefully provide a novel method to measure the beaming angle of gamma-ray bursts.

关键词： gamma-rays bursts-ISM jets and outflows

Geographical Space Development Zone Classification:An Essential Guide for Transformation of Mountain Resource Cities

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Chinese Geographical Science 2015年第3期25卷 361-374页

作者： ZHANG Jifei deng wei LIU Shaoquan Institute of Mountain Hazards and Environment Chinese Academy of Sciences

Sustainable development of mountain areas and resource cities has been a significant issue worldwide. Transformation of mountain resource cities is facing tremendous difficulties. In the context of National Major Function-oriented Zone Planning raised to a national strategic level in China, it is important to effectively implement the planning by studying geographical space development zone classification of prefecture- and county-level cities based on their major function orientation. This research is even more critical for the transformation of mountain resource cities. In this study, we evaluated geographical space development suitability, and classified geographical space development zones for Dongchuan Distric in Kunming City of Yunan Province, China, a typical mountain resource city. A quantitative grid-based evaluation was conducted using key-factor identification and restrictive-supportive comprehensive index determinati based on a geographic information system framework with different source data. The results included a classification of geographical space of Dongchuan into five types: the prohibited development zone, the inappropriate development zone, the controlled development zone, the moderate development zone and the preferential development zone. The distribution characteristics of geographical space development zones showed that the proportion of the prohibited development zone is the highest, while that of the other four development zones is comparatively lower and significantly fragmented. The geographical space development suitability is greatly controlled by the geomorphic pattern. Although Dongchuan is extremely restrained in terms of suitable geographical space for industrialization and urbanization, it still has the certain preferential and moderate development zones with an area of 207.81 km2 with large parts being concentrated and contiguous, which makes these areas the most favorable for development. Only by adapting to this reality and im

关键词： geographical space development suitability mountain resource city transformation of resource cities

Effects of Shell Composition, Dosage and Alkali Type on the Morphology of Polymer Hollow Microspheres

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Chinese Journal of Polymer Science 2018年第1期36卷 43-48页

作者： wei deng Hua-Chao Guo wei-Li Yu Cheng-You Kan Key Laboratory of Engineering Dielectrics and Its Application Ministry of Education School of Material Science and Engineering Harbin University of Science and Technology Department of Chemical Engineering Key Laboratory of Advanced Materials of Ministry of Education Tsinghua University

Polymer hollow microspheres were prepared by performing alkali treatment on the multilayer core/shell polymer latex particles containing carboxyl groups. Effects of the shell composition and dosage as well as alkali type on the morphology of the microspheres were investigated. Results showed that in comparison with acrylonitrile（AN） and methacrylic acid（MAA）, using butyl acrylate（BA） as the shell co-monomer decreased the glass transition temperature（T_g） of shell effectively and was beneficial to the formation of uniform and big hollow structure. Along with the increase of the shell dosage, the alkali-treated microspheres sequentially presented porous and hollow morphology, and the size of microspheres increased, while the hollow diameter increased first and then decreased, and the maximum hollow ratio reached 39.5%. Furthermore, the multilayer core/shell microspheres had better tolerance to NH_3·H_2O than to NaOH. When the molar ratio of alkali to methacrylic acid（MR_（alkali/acid）） for Na OH ranged from 1.15 to 1.30 or MRalkali/acid for NH_3·H_2O ranged from 1.30 to 2.00, the regular polymer hollow microspheres could be obtained.

关键词： Hollow microspheres Core-Shell polymer Alkali treatment Morphology

A new characterization of Willmore submanifolds

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Applied Mathematics(A Journal of Chinese Universities) 2011年第4期26卷 453-463页

作者： XU Hong-wei YANG deng-yun Center of Mathematical Sciences Zhejiang University Hangzhou 310027 China.

Let M^n be a compact Willmore submanifold in the unit sphere Sn＋p. In this note, we investigate the first eigenvalue of the SchrSdinger operator L = -△ - q on M, where q is some potential function on M, and present... 详细信息

关键词： Willmore submanifolds Schrodinger operator eigenvalue fiat normal bundle Willmore torus.