基于普适计算的远程教育研究

随着计算、通信和数字媒体技术的发展和渗透,以及嵌入式计算和通信设备的兴起,普适计算作为智能空间的一种新型计算模式,从根本上改变了人们对信息技术的思考,对如何在远程教育中实现普适计算的智能教室进行了研究。智能教室把交互空间的概念引入远程教育系统,远程教育和课堂现场教育的边界被模糊了,教师完全可以同时给现场的学生和远程的学生进行授课。     

可信计算及其对Ad Hoc网络安全的启发

该文借鉴可信计算思想,对可信网络进行了初步介绍,在此基础上根据AdHoc自身特点进行了通信安全、动态拓扑、漫游、有限资源等方面的分析,并就如何在AdHoc中应用可信计算提出自己的见解和下一步研究方向。     

The computer as a Trojan Horse

Abstract This paper reports on a study of boys in an Australian secondary school who were under achieving in school mathematics. The subjects were asked to develop computing software to teach fellow students about aspects of Ancient Egyptian mathematics. The paper reports four example case studies of the experience of the subjects during the course of the intervention. The paper examines the use of computing software development as a vehicle for the incidental learning of mathematical technique and for changes in attitude towards mathematics. Four different mathematical activities are reported in the case studies with a screen-dump of the subjects work included as an illustrative example.     

A theoretical investigation of the emerging standards for web services

Currently, standards for web services are being developed via three different initiatives (W3C, Semantic web services and ebXML). To the best of our knowledge, no theoretical perspectives underlie these standardization efforts. Without the benefit of a strong theoretical basis, the results, within and across these initiatives, have remained piecemeal. We suggest ‘Language–Action Theories’ as a plausible perspective that can effectively define, assess and refine web services standards. In this paper, we first investigate the existing initiatives to identify commonalities that point to theories of ‘Language–Action’ as an appropriate theoretical basis for web services standards. Next, we adapt work from these theories to develop a comprehensive reference framework for understanding web services standards. Finally, we use this reference framework to assess the three initiatives, and analyze the findings to provide insights for future development and refinement of web services standards.

气象卫星云图图象共享系统

提出的图象共享系统通过对数据进行压缩和并以通讯工作方式,实现了云图数据远距离的传输和共享,本系统可以经济地普及使用卫星云图,因而其有实际意义。     

KJ2005煤井监控系统软件的设计与实现*

针对目前中小型煤井的需求,结合计算机技术和网络技术,采用模块化设计在VC++ 6.0下开发了KJ2005煤井监控系统。对该软件的主要模块进行了简单介绍,并详细介绍了其串口通信接口程序的设计,给出了部分通信源码。应用表明,该系统简单、实用,能及时为用户提供准确信息,能动地减少了事故发生。     

快速移植的微型呼叫中心设计

介绍了如何构建微型呼叫中心的系统设计及组成,给出了相应的系统结构,并对微型呼叫中心核心部分的设计进行了描述。该设计方案的优点是投资少,软件开发和扩展均较容易,实施快速,特别适合接入线路不多的微型呼叫中心。     

DNA计算求解连续空间优化问题

首先构造了二进制编码的网络空间,其两个节点连接权的四条边对应到DNA编码,设计了相应的算子起到DNA计算酶的作用,该算法设计使得DNA计算能够求解连续空间优化问题。通过测试函数表明该算法具有较好的收敛速度和稳定性,求解结果非常好。     

基于NET的电子税务系统解决方案研究*

针对网上申报税务管理的业务需求,首先对系统开发平台的选择进行了讨论,给出了基于Web计算的B/W/D三层体系结构的电子税务系统的应用体系结构和基于微软NET的系统框架,进行了系统业务流程的分析和设计,采用XML,SSL等技术实现系统数据标准化处理和系统安全控制等的策略和方法,这种电子税务系统解决方案具有良好的开放型、集成性、可扩充性和安全性。     

逆向工程中复杂拓扑关系的三角网格构造*

三角网格构造是逆向工程CAD建模技术中的一个重要步骤。提出了一种针对扫描线点云数据的三角网格构造方法,该方法的核心思想是合并同层的扫描线,并且标记合并后扫描线的间断点,以便三角网格构造和拓扑结构建立。该方法解决了对于包含分叉和内孔特征的三角网格的构造问题。