关于同调代数中几个问题的注记

阐述了态射广义逆及其模的性质，给出了几个猜想，分析了投射模、平坦模、内射模的相互关系.     

考虑资金时间价值的动态投入产出最优模型

将不考虑资金时间价值的多部门经济投入产出模型Ⅰ推广改进为考虑资金时间价值的多部门经济动态投入产出模型Ⅱ.模型Ⅱ的优点是最优指标函数反映的是总收入的现值,它可使决策者知道最佳效益值的现值.     

Cayley-Hamilton定理应用

利用Cayley-Hamilton定理,给出矩阵的逆和矩阵幂的计算方法.     

互逆代换在恒等变形中的应用

互逆代换在解题过程中尽管仅是在式中加上0或乘以1,但只要运用适当,由此即可克服许多困难,使解题过程大大简化.     

基于宽度优先遍历树的公交线路换乘算法

本将重合于多个站点的2条公交线路，抽象成相交于1点的2条直线，从而形成基于线的城市公交线路网状拓扑结构。然后根据树的新增分叉生成原则，自动生成数目有限的树，通过宽度优先全遍历该树，即可获得所有从A地去B地的最少换乘次数乘车方案，并从中找出乘车总站数最少的推荐方案。     

Nonlinear decoupling controller design based on least squares support vector regression

INTRODUCTION Most practical systems are multivariate nonlin- ear systems. In general, the MIMO (multiple inputs and multiple outputs) systems are coupled. This cou- pling affects the effectiveness of a specific loop con- troller on the corresponding output, and in some case, may become serious and cause many difficulties to the control system design. How to decouple the mul- tivariate systems and design practical controllers is one of the major issues in nonlinear control area. In recen…     

关于一阶矩阵的注记

方阵中的一阶矩阵在教学中往往被忽略。本文从矩阵的性质以及矩阵在线性方程组、二次型等方面对一阶矩阵加以讨论。     

几类特殊r-循环阵的逆

本文利用多项式理论给出了几类特殊r-循环阵逆阵的求法.     

Hall of Mirrors: The Dilemmas of Presenting Information Technology Culture Through Information Technology Interactives and Artifacts

This paper examines how the problem of exhibiting computing artifacts was confronted by the development team of the Powerhouse Museum's new computing exhibition: Universal Machine. Universal Machine uses a mix of objects, activity trails and computer-based audiovisual and interactive technologies to take visitors on a journey through the origins, meaning and impact of contemporary information technology. It explores the interpretive partnerships developed between objects, new and traditional media, as well as the ways in which experience-based and multiple intelligence education theory informed design and content development.     

Variable Domain Variational Finite Element Solution of I A Inverse Problem of 2 D Unsteady Compressible Flow around Oscillating Airfoils

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