The Matrix and Critical Theory's Desertion of the Real

This article uses the narratives of the popular films The Matrix, Matrix: Reloaded, and Matrix: Revolutions as a lens through which to discuss the problems of the real and human agency in contemporary critical theory. Alongside a reading of the films’ invocations of social theory, the article describes parallel academic theories whose strongest structuralist and poststructuralist manifestations abandon conceptions of the real and willful human agency. In a field whose pessimistic narrative of Marxism often begins with anti-humanist structuralism, classical Marxist discourse theories offer a viable standpoint-based concept of reality upon which to found solidaristic human action.     

细分图的零维数

设A(G)为简单图G的邻接矩阵。图G的零维数定义为A(G)中0特征值的重数,记为η(G)。S(G)表示非平凡图G的细分图。本文讨论细分图的零维数并分别给出树、单圈图和双圈图的细分图的零维数。     

基质金属蛋白酶与冠心病

冠心病的病理学基础是动脉粥样硬化.目前认为动脉粥样硬化的形成和斑块的破裂与细胞外基质的破坏和重构有密切关系,而基质金属蛋白酶(MMPs)是降解细胞外基质的重要酶类.对近年来关于MMPs的结构、功能、基因表达以及在冠心病中的作用的研究取得的成果进行了综述.     

科幻片与科技文明--以《银翼杀手》与《黑客帝国》为例

科幻电影是好莱坞类型片中影响广泛的一种。在许多科幻片中有对人类生存现状的真实描摹,也有对科技的怀疑与恐惧甚至达到极端化,这跟西方的科技哲学与生态观密切相关。从“美的境域性缘发构成”的角度来建构生态技术美学才是我们对科技文明应持有的态度。     

一种利用普通矩阵运算求传递闭包的方法

介绍了二元关系的传递闭包的常用的求法以及关系中链的定义,并在链的基础上给出了用普通矩阵运算求传递闭包的方法,与用布尔矩阵运算求传递闭包相比,更容易让人接受。     

Sliding mode control of manipulators using first-order equations of motion with diagonal mass matrix

This paper presents a proposition of a sliding mode controller for a rigid manipulator expressed in terms of the generalized velocity components (GVC) vector. Introduction of GVC (Trans. ASME J. Appl. Mech. 62 (1995) 216) together with generalized positions leads to two first-order decoupled equations of motion instead of a single second-order equation. It is shown that the new controller, stable in the sense of Lyapunov, has different properties and can, according to Slotine and Li (Int. J. Robotics Res. 6 (1987) 49), give better performance than the classical sliding mode controller. Both control algorithms were tested on a 3 d.o.f., 3-D Yasukawa-like robot.     

汉字点阵字模的提取与应用

通过分析汉字点阵字库的存储结构,以及其中字模的存储方式,给出了提取汉字点阵字模的具体方法,并进一步说明了点阵字模在实际中的应用情况。     

利用概念图进行网络课程内容的设计研究

在简要介绍概念图和概念矩阵的基础上,以概念图和概念对知识体系表示的方法为依据,结合具体课程的结构,说明了构建网络课程教学内容的方法,并说明了该方法的优点。     

矩阵与其高次伴随矩阵的特征根

讨论n阶方阵A与其对应的高次伴随矩阵A(m)的特征根,根据A的特征根给出了高次伴随矩阵A(m)的特征根的表达式,并利用数学归纳法证明了结论。     

H的本征方程的一级近似(n1s)(n2p)组态的求解过程

(n1s)(n2p)组态的求解过程,即通过其Slater波函数及H矩阵,列出其解的结构,求出H矩阵及其久期方程的解,最后求出(n1s)(n2p)组态的原子能量和波函数。