浅议软件开发中的需求管理

一个项目成功与否往往取决于它是否符合需求,而需求管理是软件项目活动的基础,本文对需求管理的概念及内容提出了自己的看法,试图探讨需求管理应当遵循的原则及当前存在的问题。     

裸子植物的幼苗类型及其进化关系

 裸子植物的幼苗可分为3个类型、8个亚型。即：1．苏铁型，包括苏铁亚型、银杏亚型、南洋杉亚型；2．松型，包括杉亚型，松亚型，麻黄亚型；3．买麻膝型，包括买麻滕亚型，百岁兰亚型。类型和亚型都有特征描述，并有一个检索表。文中首先讨论了种子的起源是多元的，因而裸子植物的起源也应是多元的，是前裸子植物不同类型平行进化的结果。 又根据裸子植物幼苗类型的形态特征，提出裸子植物有4条进化路线，即：苏铁路线，银杏路线，松柏路线和买麻滕路线。还讨论幼苗类型之间的进化关系，认为除买麻滕型幼苗因其形态特殊有自己独特的发展路线外，总的趋势是由留土萌发向出土萌发发展。     

公司治理结构与会计信息质量初探

本文分析了公司内外部治理结构和会计信息质量存在的问题,以及公司治理结构缺陷对会计信息质量的影响,并提出了完善我国公司内外部治理结构,提高会计信息质量的几种措施。     

Tracking control of nonlinear automobile idle-speed time-delay system via differential geometry approach

This paper is concerned with the problem of global asymptotical tracking of single-input single-output (SISO) nonlinear time-delay control systems. Based on the input-output feedback linearization technique and Lyapunov method for nonlinear state feedback synthesis, a robust globally asymptotical output tracking controller design methodology for a broad class of nonlinear time-delay control systems is developed. The underlying theoretical approaches are the differential geometry approach and the composite Lyapunov approach. One utilizes the parameterized co-ordinate transformation to transform the original nonlinear system into singularly perturbed model and the composite Lyapunov approach is then applied for output tracking. For the view of practical application, the proposed control methodology has been successfully applied to the famous nonlinear automobile idle-speed control system.     

探讨主导与主体相结合的体育教学模式

通过体育教学实践观察和文献资料研究,从我国学校体育教学现状,论述了充分发挥体育教师主导作用和学生主体作用的体育教学改革思路和模式及原则.为推进学校体育教学改革,适应素质教育发展.培养新时代高素质的人才,有着十分积极的指导意义.     

基于VRML和Java的交互式虚拟产品设计

基于虚拟现实建模语言VRML和Java编程技术，将两者结合运用构建一个应用于数字科技馆中的交互式虚拟产品设计系统，使青少年可以通过互联网协同多人进行产品设计。     

关于计算机辅助教育评价的探讨

计算机辅助教育系统的开发和评价是密不可分的,评价是为了促进系统的开发。本文就计算机辅助教育评价的标准进行了探讨,并针对当前评价存在的问题给出了几点建议。     

Poststructural feminist pedagogy in English instruction of vocational-and-technical education

The purpose of this study was to develop a poststructural feminist pedagogical model and to investigate whether vocational-and-technical college students receiving poststructural feminist instruction would exhibit better learning achievement and critical thinking ability, and express greater satisfaction with their classes than those receiving traditional instruction. In applying a poststructural feminist model, the researchers intended to help both the teacher and students work together to overcome the estrangement and alienation that have long been the norm in the contemporary Chinese education system. The research results show that the poststructural feminist pedagogy had a positive effect upon the participants in the experimental group. Several conclusions are elicited from the study. First, in the English language achievement post-test, the participants receiving the poststructural feminist instruction significantly outperformed those receiving the traditional banking instruction in terms of listening, vocabulary, grammar, and reading. Second, in the critical thinking ability post-test, the participants significantly outperformed those receiving the traditional banking instruction in terms of length, focus, content, organization, and style. Third, in regard to the students’ satisfaction, it was clearly shown that the students who received the instruction informed by poststructural feminist pedagogy expressed significantly greater satisfaction than those who had received traditional banking instruction in terms of instructional objective, teaching method/materials, teacher quality, class environment, and assessment.     

构建和谐社会进程中图书馆的作用探讨

文章通过对图书馆在构建社会主义和谐社会中的作用的论述,强调了在建设和谐社会中,图书馆的五项功能:传承、整合、创新文化的功能;启迪思想、陶冶情操、净化心灵、弘扬社会正气的功能;构建终身学习的平台,提高人的综合素质的功能;提供健康的娱乐休闲场所,构建精神家园的功能;维护信息公平,保障公民权利的功能等。     

浅谈图形图像处理中的几种颜色模式

从目前常用对图形图形进行处理的软件来看,在颜色模式方面主要应用的是RGB、HSB及LAB等颜色模式,通过多种颜色模式的应用来反映所具有的不同的色彩范围,其中颜色模式间能够通过命令实现相互间的转换。