含表格函数的质点运动微分方程的数值解法

本文对质点在阻尼介质中运动的微分方程做了进一步的讨论,介绍了这组方程在实际求解过程中所遇到的困难及解决办法。     

等变奇点理论中的一类有限生成模

Ｍａｌｇｒａｎｇｅ预备定理及其等变形式是现代数学中的一个重要宣，本文应用该定理讨论了现在等变奇点理论及等变分歧理论中的有限生成与一子空间，将已知的一些结果推广到理钱般情形。     

点空间分析--分维与均匀度

对有限空问内的点集定义了独占圆、独占线和独占球。通过对有限点集均匀性的研究,抽象出了均匀度的定义。对分形集定义了度量映射,度量映射产生的点集的均匀度与分维之间有换算关系,可以说均匀性与复杂性是密不可分的。均匀度是对点集格局的一种测度,它描述的是点集的空间关系,而不是点的“多少”,有限点集的均匀度可以取到[01]区间的任何实数,这是它与测度和分维的区别。本文得到两个有趣的常数：一位无限循环小数产生的点集的均匀度为0．1,随机格局的均匀度的数学期望为1／x=0．318。可见,均匀度将空间复杂性转移到了点集均匀性上,它为复杂性的研究打开了新的窗口。     

A new model for analyzing laminar forced convective enhanced heat transfer in latent functionally thermal fluid

In this paper, a new model to analyze laminar forced convective enhanced heat transfer in latent functionally thermal fluid is developed. The main characteristics of the model are- i) a new formula of the specific heat at constant pressure is used; ii ) a real heat transfer process is considered; that is, heat transfer processes occur not only between working fluid and microcapsules, but also between the mixture and tube wall; iii) the new method, which combines the newly developed axisymmetrical dual reciprocity boundary element method (DRBEM) with finite difference method (FDM), is used to solve the control equations of this problem. The new model is validated by experimental data. Some new physical results on the variational characteristics of the specific heat at constant pressure with space and time during phase-change process, the time-marching history of the phase-change interfaces and so on are obtained. Several main physical factors that affect enhanced heat transfer in latent functionally thermal fluid are numerically analyzed. Some new understandings for the mechanism of enhanced heat transfer in the functionally fluid are obtained.     

西方音乐史教学的新理念

本科学生应具有更高的理性思维、阅读和写作能力。那么,为培养学生的实际能力,适应当前高师音乐教育改革的形势,必须打破以往的灌输式教学现状。在高师本科西方音乐史教学中,我们的教学应以“史”为基础,重点放在“论”上,要分清“论”与“史”的主次关系。并且,在“论”的同时,特别强调文献的占有和阅读的重要性。加强使用“题论”的方式和‘‘多元性”的思想观念,推行“以学生为中心”的音乐教学方法。     

从科技革命的视角看"三个代表"重要思想对唯物史观的重大创新

面对当代科技革命带来的严峻挑战,江泽民同志提出“三个代表”重要思想,要求努力实现社会主义与科技革命的紧密结合,从而实现了唯物史观的重大创新：创新动力论深刻揭示了“结合”的动力机制,实现了唯物史观社会发展动力理论的重大创新;先进生产力论科学概括了“结合”的核心内容,实现了唯物史观生产力理论的重大创新;人的全面发展论充分体现了“结合”的价值目标,实现了唯物史观历史价值论的重大创新。深刻领会江泽民同志的有关论述,对于全面建设小康社会,加快推进社会主义现代化,不断体现社会主义优于资本主义的特点具有重大而深远的意义。     

Description of mechanism function about dehydration of cobalt oxalate dihydrate by multiple rates isotemperature method

0　IntroductionThetechnologyofthermalanalysishasbeenwidelyusedinthestudyofthermalbehaviorandthermalcharacterofsolidstatereaction ,theprimaryintentionofthermalanalysiskineticsistoestablishseparatevaluesofapparentactivationenergyE ,themostprobablemechanism g(α)andthepre exponentialfactorA ,meanwhilethedeterminationofg(α)hasgraduallybeenthefocusofthisfield .Inthisfield ,therearemostlygeneralkineticsmethodsused presently ,suchasCoats Redfern’s[1 ] integralmethod ,Achar’s[2 \〗differentialmet…     

FDTD modeling of transient scattering by subsurface targets

In this paper, a two-dimensional (2-D) finitedifference time-domain method (FDTD) scheme is used to simulate the transient scattering characteristics of buried objects, which are modeled by columns of arbitrary permittivities, conductivities, and sizes. The FDTD soil is modeled by isotropic, homogeneous and lossy media. The standing-traveling wave boundary condition (STWBC) that can simplify calculation and save CPU storage is used for modeling physical absorbers inside the FDTD computational dornairL Reflection of electromagnetic pulses incident on a layered medium and transient scattering by the ground and an underground airsqu are cylinder are computed. These results verify the validity of the FDTD scheme by comparisons with those shown in some references. Numerical results presented in the final part of this paper are desirable and meaningful, explicitly distinguishing echo waves stemming from the ground and the buried ohjects.     

Optimization of short-pulse GPR transmit antenna

By analyzing the current distribution of Bow-Tie amerma used in short-pulse ground penetrating radar, the methods of antenna load and driving are presented in this paper to reduce strength of reflective wave both at antenna end and excitation point. The numerical simulation results show the strength oi reflective wave is smaller than -55dB comparing with the driving wave when the methods are adopted.     

“N＋Adj．＋的＋否定词＋V／VP”句式的论旨结构分析

本文以"N+Ad.+的+不+V"讨论表示否定的"N+Adj.+的+否定词+V/VP"句式.首先考察了"N+Adj.+的"的论元角色与谓语动词论旨结构的关系,指出当动词是二元动词或三元动词时,"N+Adj.+的+否定词+V/VP"句式和"否定词+V/VP+N+Adj.+的"句式在论旨结构上具有平行性联系,认为"N+Adj+的+否定词+V/VP"句式实际上是由"否定词+V/VP+N+Adj.+的"中的焦点成分"N+Adj.+的"前置形成的焦点突显句式."N+Adj+的"作为论元,其所指与动词的论元属性及语义密切相关.