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REMARK ON CRITICAL SPEED OF TRAVELING WAVEFRONTS FOR NICHOLSON'S BLOWFLIES EQUATION WITH DIFFUSION

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Acta Mathematica Scientia 2010年第5期30卷 1561-1566页

作者：危地吴教育梅铭 Department of Information and Computation Nanchang Hangkong University School of computer Engineering and technology Guangdong Institute of Science and Technology Department of Mathematics Champlain College Saint-LambertSaint-Lambert Department of Mathematics and Statistics McGill University

This note is devoted to the son＇s blowflies equation with diffusion, a critical speed of traveling waves, we give behavior with respect to the mature age study on the traveling wavefronts to the Nicholtime-delayed re... 详细信息

关键词： Nicholson's blowflies equation traveling wavefronts critical wave-speed

Davis's Inequalities for Two-Parameter Banach Space Valued Strong Martingales and Geometrical Properties of Banach Spaces

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Wuhan University Journal of Natural Sciences 2000年第2期5卷 131-136页

作者： YE Chen GAN Shi xin ZHANG Feng Wuhan University College of Mathematics and Computer Science Wuhan China (GRID:grid.49470.3e) (ISNI:***)

In this paper we investigated theL 1 norm inequalities of theP square and the maximal functions of two-parameterB-valued strong martingales, which can be applied to characterizep-smoothness andq-convexity of Banach sp... 详细信息

关键词： two parameterB valued strong martingale Davis’s inequality p smoothable q convexifiable

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复杂虚拟环境下的实时碰撞检测算法

系统仿真学报 2010年第1期22卷 125-129页

作者：赵伟谭睿璞李勇吉林农业大学信息技术学院长春130118 吉林大学数学学院长春130012 福建经济管理干部学院福建350002

提出了一种共享存储系统的并行碰撞检测算法。利用AABB包围盒的优点来构建任意物体的混合包围盒层次,利用并行模型来并行遍历混合包围盒层次,进一步加速碰撞检测算法。实验结果表明,与现有的经典算法相比,该算法在效率、精确性方面具有... 详细信息

提出了一种共享存储系统的并行碰撞检测算法。利用AABB包围盒的优点来构建任意物体的混合包围盒层次,利用并行模型来并行遍历混合包围盒层次,进一步加速碰撞检测算法。实验结果表明,与现有的经典算法相比,该算法在效率、精确性方面具有明显优势,能够满足交互式复杂虚拟环境的实时性和精确性的要求。

关键词：虚拟环境实时碰撞检测混合包围盒层次并行算法

Kinetics analysis of volume phase transition of intelligent neutral thermo-sensitive hydrogels

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Science china(Physics,Mechanics & Astronomy) 2008年第5期51卷 532-540页

作者： WANG XiaoGui1 & LI YiQuan2 1 college of Mechanical Engineering,Zhejiang University of technology,Hangzhou 3.003.,china 2 School of Mechanical & Electronic Engineering,{3. University of Science and technology,{3. 13.022,china 1. college of Mechanical Engineering Zhejiang University of Technology Hangzhou 310032 China 2. School of Mechanical & Electronic Engineering Changchun University of Science and Technology Changchun 130022 China

In this work,utilizing the first law of thermodynamics and the Flory mean-field theory,the kinetic deformation studies concerning the volume phase transition of the neutral thermo-sensitive hydrogels were performed *** hydrogel was assumed as a biphasic mixture medium in the framework of the continuum mixture *** the energy conservation of the thermodynamics system of the hydrogel,the governing equations for the kinetics of the nonlinear large deforma-tion were *** explicit analytical expressions of the effective stress tensor and the chemical potential of the fluid of the thermo-sensitive hydrogel PNIPA were also obtained from the Helmholtz free energy,which can model the steady-static volume phase transition quantitatively.

关键词： thermo-sensitive hydrogel volume phase transition effective stress energy conservation

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一种基于模糊Petri网的并行推理方法

系统仿真学报 2007年第A1期19卷 108-109,113页

作者：徐欢李孝忠天津科技大学电子信息与自动化学院天津科技大学计算机科学与信息工程学院天津大学系统工程研究所天津市300072

把模糊Petri网模型转化为矩阵形式,在此基础上提出了一种并行推理算法。算法将推理过程转化为矩阵运算,不但考虑了前提条件的权值、变迁阈值和规则可信度等因素,还进一步将变迁触发条件严格化,有效的避免了一些变迁不必要的重复触发,降... 详细信息

把模糊Petri网模型转化为矩阵形式,在此基础上提出了一种并行推理算法。算法将推理过程转化为矩阵运算,不但考虑了前提条件的权值、变迁阈值和规则可信度等因素,还进一步将变迁触发条件严格化,有效的避免了一些变迁不必要的重复触发,降低了算法复杂度。通过实例说明,此推理算法易于实现并可以提高推理效率,尤其适合较大较复杂的模糊Petri网模型。

关键词：模糊Petri网模糊知识矩阵运算并行推理算法

STRATEGY OF MAIZE′S CONCENTRATING TO ADVANTAGE AREAS IN jilin PROVINCE

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Chinese Geographical Science 2003年第4期13卷 378-382页

作者： JIANG Hui-ming,GU Li-li(Managerial college,jilin Agricultural University,changchun 13.118,P. R. {3.) Managerial college Jilin Agricultural University Changchun P. R. China

jilin Province is one of the main grain-producing provinces of china,which has dominant position in maize production,by the view of its advantages in policy,location,breed and market. And after entering WTO,some measures have been taken to enhance maize competitive ability. But there are some difficulties in concentrating production to maize advantaged areas. This paper expounds the basis that jilin Province becomes the advantage area of maize,analyzes the problems and puts forward the supporting policy. Some strategic measures are proposed,as developing comparable advantages,carrying out the strategy of un-equilibrium development and cultivating advantaged product areas of maize to rapidly improve the international competitive ability and productivity of maize in jilin Province,cast the agricultural predicament off and promote the agricultural development into a new stage.

关键词： maize advantage area concentration jilin province

Engagement of PSGL-1 enhances β2-integrin-involved adhesion of neutrophils to recombinant ICAM-1

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Acta Pharmacologica Sinica 2006年第5期27卷 617-622页

作者： Xiao-guang WANG~(2,3. Yan-ping CHENG~4 Xue-qing BA~(2,5) ~2Institute of Genetics and Cytology Northeast Normal University,changchun 13.024,china:~3.epartment of Biology,changchun Normal {3.,changchun 13.03.,china ~4{3. of Life Science.jilin Normal University,Siping 13.001,china Institute of Genetics and Cytology Northeast Normal University Changchun 130024 China Department of Biology Changchun Normal College Changchun 130032 China college of Life Science Jilin Normal University Siping 136001 China

Aim:The interactions of selectins and their ligands initiate the process of leuko-cyte migrating into inflamed tissue.P-selectin glycoprotein ligand 1 （PSGL-1） isthe best characterized ligand of selectins,and has been demonstrated to mediatethe adhesion of leukocytes to all three selectins in ***-1 not only func-tions as an anchor molecule to capture the leukocytes to the activated endothelialcells by its interaction with selectins,but also transduces the signals to *** present work aimed to investigate the mechanism by whichPSGL-1-mediated signal activates neutrophils and enhances the adhesion to theendothelial ***:We detected the effects of the engagement of PSGL-1with monoclonal antibodies （mAb） or P-selectin on the adhesion of neutrophils tothe recombinant intercellular adhesion molecule-1 （ICAM-1）,and on the expres-sion of β***,the role of cytoskeleton in these process wasstudied by using inhibitor cytochalasin ***:The engagement of PSGL-Iincreased the expression of β2-integrin on the surface of neutrophils and en-hanced the adhesion of neutrophils to the recombinant *** againstCD18 impaired the adhesion of PSGL-1-engaged neutrophils to ***,the inhibitor cytochalasin B largely blocked the increase of CD 18 expression aswell as the adhesion of PSGL-1-engaged neutrophils to ***:The PSGL-1-transduced signals can enhance β2-integrin-involved adhesion ofneutrophils to the recombinant ICAM-1,and this process depends on the dynam-ics of cytoskeleton.

关键词： P-selectin ligand protein intercellular signaling peptides and proteins intercellular adhesion molecule-1 CD 18 antigens

AERODYNAMIC CHARACTERISTICS ABOUT MINING DUMP TRUCK AND THE IMPROVEMENT OF HEAD SHAPE

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Journal of Hydrodynamics 2008年第6期20卷 713-718页

作者： WEI Xiu-ling WANG Guo-qiang FENG Su-li college of Mechanical Science and Engineering Jilin University Changchun 130022 China Department of Aeronautic Mechanical Engineering Aviation University of Air force Changchun 130022 China Fundamental Science Department Armor Technique Institute Changchun 130117 China

The external flow field around a certain mining dump truck was simulated. The airflow structure and the aerodynamic drag were discussed, and the relationship between airflow characteristics and aerodynamic drag were obtained. In order to solve the problem of head shape of the truck, three scenarios including edge rounding, installing splitter planes and their combination were put forward to improve the head shape through numerical simulation and analysis. The model and method were selected to be three dimensional and time-independent. The Reynolds-averaged Navier-Stokes equations were solved using the finite volume method. The RNG k-ε model was chosen for the closure of the turbulent quantities. The results show that the third scenario is the best one, because of its aerodynamic characteristics being better than those of unimproved model.

关键词： dump truck external flow field numerical simulation

Non-isothermal decomposition kinetics and lifetime of Tb2(0-MBA)6(PHEN)2

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Rare Metals 2003年第3期22卷 155-159页

作者： ZHANGJianjun BAIJihai WANGRuifen WANGShuping LIJibiao ExperimentalCenter NormalUniversityShijiazhuang050016China Departmentofcomputer HebeiNormalCollegeofScienceandTechnologyChangli066600China DepartmentofChemistry HebeiNormalUniversityShijiazhuang050091China

The thermal decomposition of Tb_2(O-MBA)_6(PHEN)_2 (O-MBA: o-methylbenzoate;PHEN: 1,10-phenanthroline) and its kinetics were studied under the non-isothermal condition bythermogravimetry-derivative thermogravimetry (TG-DTG) techniques. Kinetic parameters were obtainedfrom analysis of TG-DTG curves by the Achar method and the Madhusudanan-Krishnan-Ninan (MKN) *** most probable mechanism function was suggested by comparing the kinetic parameters. The kineticequation for the first stage can be expressed as dα/dt = Aexp(-E/RT)·3.1 - α)^(2/3.. Thelifetime equation at mass loss of 10% was deduced as lnτ= -28.7429 + 19797.795/T by isothermalthermogravimetric analysis.

关键词： thermochimica non-isothermal kinetics TG-DTG terbium complex O-methylbenzoate 1,10-phenanthroline