固有函数系的完全性

在应用Ｓｔｕｒｍ－Ｌｉｏｕｖｉｌｅ理论的展开定理时，固有函数系是完全的，不能缺少某一固有函数．在应用分离变量法解某些定解问题时，容易发生缺少某一固有函数的原因     

基于K图的逻辑函数变换方法

运用K图(卡诺图),不仅实现了与-或-非代数系统下逻辑函数的变换,并将逻辑函数的变换与化简结合起来,克服了代数法变换的繁琐与不足,丰富了变换的方法和途径;而且实现了将逻辑函数变换成与-异或代数系统下的RM展开式.K图法具有形象直观、方便快捷的特点,能提高数字电路的教学效果和设计效率.     

一类竞争一合作生态模型平衡点的渐近稳定性

研究一类竞争一合作生态数学模型平衡点的渐近稳定性，得到了保证该系统平衡点是渐近稳定的一组充分条件．     

X射线粉末衍射仪测定材料热膨胀的新方法

本文在简单综述测定材料热膨胀的各种方法与技术的基础上着重谈本文作者建立的Ｘ射线粉末衍射仪测定材料热膨胀的新方法并导出了新方法的测量误差极限的表示式。     

Experimental study of the characteristics of novel microactuator based on optothermal expansion

A novel asymmetric optothermal microactuator was developed.A microactuator of 750μm length wasmachined by an excimer laser micromachining system using single layer material.It had an asymmetricstructure consisting of two thin expansion arms with different widths.A laser diode(660nm)was em-ployed as the external power source to activate the microactuator.We introduced a charge coupled device(CCD)-combined optical microscope and a computer system to observe and capture the microactuator' sdeflection and v...     

An eigenfunction expansion method for the elastodynamic response of an elastic solid with mixed boundary surfaces

The method of eigenfunction expansion is one of the most elegant methods for solving elastodynamic problems. The solution obtained from it is more concise than that obtained from the integral transform technique. Traditional eigenfunction expansion method is used for the elastodynamic problems with displacement and traction boundary conditions. In this paper, the method is generalized to study the elastodynamic response of an elastic solid with mixed boundary surfaces, and the exact analytical solution is derived. The dynamic response of a finite-length solid aluminum cylinder with two mixed end boundaries is numerically evaluated. The result computed from the analytical solution agrees very well with that obtained from finite element method （FEM）.     

初等变换和初等矩阵在解题中的应用

利用初等变换和初等矩阵的基本性质给出高等代数中几道常见习题的其它解答方法，特别地重新证明了行列式的拉普拉斯展开定理和柯西-比内特公式。     

Rate of Convergence of Normal Approximation for Local Median Estimate

ConsiderthenonparametricmedianregressionmodelYni=g(xni) ni,1≤i≤n(1)whereg:[0,1]→Risanunknownfunctionofinterest,xni,1≤i≤n,arefixed-designpointsintheinterval[0,1],{ni,1≤i≤n}isatriangulararrayofrowiidrandomvariableshavingmedianzero,andYni,1≤i≤n,     

水的体胀系数的计量原理、公式和方法

利用不同温度下纯水的密度值,给出了水的体胀系数的计量原理、公式和方法.