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小流域集水效率的径流系数算法

山东农业大学学报（自然科学版） 2004年第3期35卷 379-382页

作者：白清俊董树亭范世香任淑霞山东农业大学水利土木工程学院山东泰安271018 山东农业大学农学院山东泰安271018

小流域的农业生产多以雨养农业为主 ,其集水效率是雨水集蓄利用工程的关键。本文首先讨论了径流系数法 ,其次以山东安口小流域为例 ,通过野外观测数据计算出其上的径流系数。安口流域径流系数较高 ,平均为 0 .4 6 ,实例检验表明径流系... 详细信息

小流域的农业生产多以雨养农业为主 ,其集水效率是雨水集蓄利用工程的关键。本文首先讨论了径流系数法 ,其次以山东安口小流域为例 ,通过野外观测数据计算出其上的径流系数。安口流域径流系数较高 ,平均为 0 .4 6 ,实例检验表明径流系数法对集水量进行估算具有较高的准确性 ,因而在类似于安口流域的这类区域 ,利用 (天然 )

关键词：小流域集水径流系数雨养农业流域径流集雨雨水集蓄利用效率区域农业生产

Harmonious Economic Development Model in the Niyang River Valley under Environmental Constraints

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Asian Agricultural Research 2012年第7期4卷 69-72页

作者： SONG Lian-jiu 1 ,SUN Zi-bao1,LI Ping2,YAO Xue-lin1 1.School of Plant Science,Tibet Agricultural and Animal Husbandry college,Nyingchi 860000,china 2.Scientific Research Office of Tibet Agricultural and Animal Husbandry college,Nyingchi 860000,china

We select gross national happiness(GNH),per capita GDP,the number of tourists received in rural areas,waste gas emission and other indicators that are closely related to harmonious economic *** the indicator data,we establish the multiple linear regression model that is in line with the harmonious economic development model in the Niyang River valley,and conduct empirical *** to the analysis results,the following recommendations are put forward:adhering to laying equal stress on protection and development;improving the quality of the population;protecting environment and curbing environmental pollution;speeding up the construction of ecological environment relying on technology;increasing investment in poverty alleviation to eradicate poverty;extensively mobilizing the public to participate in ecological and environmental protection;coordinating the relationship between the ecological environment and economic development.

关键词： The Niyang River valley Economic harmony Model

Vacancies and Antisites in B2 FeAl and DO_3 Fe_3Al with a Modified Analytic EAM Model

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Journal of Materials Science & Technology 2001年第6期17卷 601-604页

作者： Xiaolin SHU, Wan gyu HU, Hanning XIAO and Huiqiu DENG college of Materials Science and Engineering, Hunan University, Changsha 410082, china Ban gwei ZHANG International Centre of Materials Physics, Chinese Academy of Sciences, S Coll. of Mat. Sci. and Eng. Hunan Univ. Changsha 410082 China

A simple modified analytic EAM model for bcc Fe and fcc Al was used to calculate the lattice constant and elastic constants of B2 FeAl and DO3 Fe3Al alloys. The formation energies of ... 详细信息

A simple modified analytic EAM model for bcc Fe and fcc Al was used to calculate the lattice constant and elastic constants of B2 FeAl and DO3 Fe3Al alloys. The formation energies of vacancy and antisite were also calculated. The present calculations are in agreement with the experimental data and the theoretical results obtained by other authors.

关键词： Al DO Fe Vacancies and Antisites in B2 FeAl and DO3 Fe3Al with a Modified Analytic EAM Model EAM

心肌特异性新蛋白激酶p93和peroxiredoxin3的相互作用

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生物化学与生物物理进展 2004年第8期31卷 688-692页

作者：冯艳刘冬青王震曹慧青时娜邓仲端丁金凤孟宪敏中国医学科学院中国协和医科大学阜外心血管病医院分子医学中心北京100037 华中科技大学同济医学院药理系武汉430030 华中科技大学同济医学院病理系武汉430030

为了明确p93在心血管系统中的生物学功能及在信号传导通路中的作用 ,采用酵母双杂交技术 ,选择 p93N端第 10 1～ 372位氨基酸构建诱饵质粒 ,筛选成人心脏cDNA文库 ,寻找与之相互作用的蛋白质 ,结果得到蛋白peroxiredoxin 3(PRX 3) .采... 详细信息

为了明确p93在心血管系统中的生物学功能及在信号传导通路中的作用 ,采用酵母双杂交技术 ,选择 p93N端第 10 1～ 372位氨基酸构建诱饵质粒 ,筛选成人心脏cDNA文库 ,寻找与之相互作用的蛋白质 ,结果得到蛋白peroxiredoxin 3(PRX 3) .采用体外结合实验和免疫共沉淀等方法 ,证实了原核和真核表达的 p93确实可与PRX3相互作用 ,通过双重荧光共定位 ,为二者的相互作用提供了定位依据 .研究提示p93可能参与心肌细胞中与PRX3有关的各种生理病理过程 ,如生长、分化、发育、凋亡。

关键词：心肌特异性新蛋白激酶 p93 酵母双杂交心肌细胞生物学功能信号传导通路

INVESTIGATION OF INFLUENCE OF WETTABILITY ON POISEUILLE FLOW VIA MOLECULAR DYNAMICS SIMULATION

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Journal of Hydrodynamics 2010年第4期22卷 513-517页

作者： SONG Fu-quan WANG Jian-dong college of Mathematics Physics and Information Engineering Zhejiang Normal University Jinhua 321004

In this article,the influence of wettability on a liquid flow between two parallel plane walls were studied by using Non-Equilibrium Molecular Dynamics（NEMD） *** wettability of the solid surfaces can be described as the contact *** liquid flow rate,the slip velocity and the slip length which are affected by the contact angle were *** results show that the boundary condition at a microscopic level is different from a ＂no-slip＂ condition at a macroscopic *** exits a slippage of a liquid flow for the hydrophobic boundary and an external force is needed to overcome threshold pressure for the hydrophilic *** the orderly layered distributions of the liquid particles near the hydrophilic surface vary from a place near the hydrophobic *** study indicates that the surface wettability plays a significant role on possibilities of forming a viscous layer and the direct slip at the solid *** resistance of liquid flow can be decreased by changing the wettability of boundary surface.

关键词： molecular dynamics simulation Poiseuille flow hydrophilic surface hydrophobic surface velocity slippage

Preparation and Properties of Crystallizable Glass/Al_2O_3 Composites for LTCC Material

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Journal of Wuhan University of Technology(Materials Science) 2011年第6期26卷 1174-1178页

作者：邵辉周洪庆 college of Materials Science and Engineering Nanjing University of Technology

The investigated low temperature Co fired ceramics（LTCC） composite of 60wt% CaO-Al2O3-B2O3-SiO2 glass and 40wt% α-Al2O3 as a filler is a non-reactive system, which is a critical part of the low temperature Co fired ceramics process. Through a study on densification process, the phase transformation and microstructure can be revealed. Its composites typically consist of CaO-Al2O3-B2O3-SiO2 glass and α-Al2O3 powders of average particle size （D50=3.49 mm）. The sintering behavior, phase evaluation, sintered morphology, and microwave dielectric properties were investigated. In the fire range of 800 to 900 ℃, the composites were crystallized after completion of densification. It is found that the composites start to densify at 825 ℃, simultaneously, the dielectric constant （εr） reaches its maximum. With increasing heat-treatment temperatures, due to the loose microstructure of the material, tanδ increases slightly. The last of the sintered samples were identified as partly Anorthite at 850 ℃. At that temperature it has εr of 7.9 and tanδ less than 1×10-3, and can be used as a promising LTCC material.

关键词： glass-ceramics densification precipitation LTCC materials

LOW ORDER NONCONFORMING RECTANGULAR FINITE ELEMENT METHODS FOR DARCY-STOKES PROBLEMS

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Journal of Computational Mathematics 2009年第Z1期 400-424页

作者： Shiquan Zhang School of Mathematics,Sichuan University,Chengdu 610064,china Xiaoping Xie Yangtze Center of Mathematics and School of Mathematics,Sichuan University,Chengdu 610064,china Yumei Chen School of Mathematics,Sichuan University,Chengdu 610064,china college of Mathematics and Information,china West Normal University,Nanchong 637002,china

In this paper,we consider lower order rectangular finite element methods for the sin-gularly perturbed Stokes *** model problem reduces to a linear Stokes problemwhen the perturbation parameter is large and degenerates to a mixed formulation of Pois-son’s equation as the perturbation parameter tends to *** propose two 2D andtwo 3D nonconforming rectangular finite elements,and derive robust discretization *** experiments are carried out to verify the theoretical results.

关键词： Darcy-Stokes problem Finite element Uniformly stable

Research on the Security in Wireless Sensor Network

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Research on the Security in Wireless Sensor Network

A daptive Normal Image Coding Scheme Basedon DCT Spectrum Distribution and H-Order

中国通信学会第五届学术年会

作者： Wang Jianqiu1,2 Lang Weimin3 Ji Yinghua1 (1 college of Physics and Communication Electronics, Jiangxi Normal University, Nanchang, 330027, china 2 college of Electronic and Information Engineering,Wuhan Institute of Technology, Wuhan, 430074, china 3 PLA Communication Commands Academy, Wuhan, 430010, china)

As sensor networks edge closer towards wide-spread deployment, security issues become a central concern. Typical sensors possess limited computation, energy, computation, memory resources and they are always deployed in a harsh, unattended or hostile environment, so the security issues posed by sensor networks represent a rich and challenging field of research problems. In this paper, we probe into various security requirements with regard to Wireless Sensor Network（WSN）. Furthermore, we analyze status quo of the security in WSN from three aspects: key management, identity authentication as well as attacks and countermeasures. In conclusion, we point out its development direction based on the analysis and remark of problems remaining unsolved in WSN.

关键词： Sensor Network Security Key Management Authentication Attacks and Countermeasures

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The Journal of china Universities of Posts and Telecommunications 1999年第2期6卷 22-27页

作者： FAN Shu-xing LIU Chun-yang(1.Vocational and Technical Teacher’s college, Beijing United University, Beijing, 100011, P.R. china, 2. CSSAR Centre for Space Scienceand Applied Research, Chinese Academy of Sciences as Post-doctor, Beijing 100011, PR. china) Vocational and Technical Teacher's college Beijing United University Beijing 100011 P.R. China CSSAR Centre for Space Science and Applied Research Chinese Academy of Sciences as Post-doctor Beijing 100011 PR. China

In this paper according to the results of DCT spectrum disfribution analysis. we propose an adaptivenormal image coding scheme and image pre treatment, which use multi-scale adaptive sub-blocks in h-order anddecompose direct current component Dc into both components. Redundancy in one of both components can beremoved by multi-direction in h-order, the other component can be quantified finitely in loss. with less influence onthe quality of the reconstructed image. A new method combining quart-tree and template matching is used to extractnon-zero data from the coefficient matrix,the ideal result has been achieved from the coding scheme. The newscheme is called ANQS (adaptive normal quantification scheme ). Experiments prove that ANQS is much betterthan JPEG in the same image. With ANQS excellent quality of reconstruction is obtained at data rate as low as 0.0625 bpp and their PSNR as high as 30.31 dB, respectively but JPEG method is only obtained at data rate: 0.180 bppand PSNR: 32. 19 dB.

关键词： inage coding DCT DCT spectrum disgtribution Hilbert order