采用自相似分析进行视频中的背景识别

当今的视频监控系统已经越来越智能化,从中涌现的各种最新技术研究都预示着它的广阔前景.这些新技术中,视频场景的背景识别技术拥有着相当可观的实际应用价值.本文提出了一种对视频序列进行自相似分析,从而进行背景识别的方法.该方法比起传统的使用帧间柱状图差分的方法,在实时性和直观性上都做得非常好.     

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。     

一类特殊矩阵的特征值

本文利用矩阵A =αβT 的特征值, 对与矩阵k1 I + k2αβT 的特征值相关的一些典型题     

翻面矩阵的性质与应用

利用线性变换的观点，构造了翻面矩阵，对丁石孙先生在[1]中提出的翻硬币问题给出了一个简捷的数学模型及求解方法，同时得到相应的翻面矩阵的一些性质和猜想。     

关于矩阵秩的一个重要不等式的改进

根据Sylvester不等式、矩阵秩的性质、线性子空间的性质及矩阵的满秩分解,给出了一个重要不等式的一个改进形式.     

Designing and developing a programme-focused assessment strategy: a case study

Abstract

This case study describes the process that the Humanities Programme Team, in Dublin City University’s Open Education Unit, has undertaken with regard to developing a systematic, programme-focused assessment strategy. It charts the development of an Assessment Matrix that facilitated the enhancement of programme coherence in the context of a distributed modular provision model, and facilitated the use of an appropriate range and scaffolding of assessment types in relation to learning outcomes. To conclude, four recommendations on developing a programme-focused assessment strategy are presented: explicitly link assessments to both programme and module learning outcomes; provide adequate supports and resources for those designing and writing assessments; provide those Assessment Writers with appropriate professional development, as well as an opportunity to be part of an assessment writing community; and to embed a programme-focused assessment strategy into a programme’s quality assurance processes.     

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。