Interactive Dynamic-system Simulation in Classroom and Lab: Neural Networks,DOS, OS/2 and UNDC

We discuss teaching applications of new personal computer (PC) and workstation programs for simulating dynamic systems and neural networks. DESIRE software permits truly interactive modeling without the usual annoying time delays imposed by FORTRAN compilation and linking. DESIRE/NEUNET brings similar convenience to the interactive design of systems which include neural networks. Neuron-layer interconnections are described in a readable matrix language. We introduce PC simulation under OS/2 and workstation programs for UNIX/OPEN WINDOWS, and dwell briefly on the impact of these new operating systems on educational simulation laboratories     

More Experience with MINIX in an Operating Systems Lab

In operating systems classes students study the theory, concepts, and mechanisms of operating systems: system calls, layered design, the client‐server model, processes, interprocess communication, CPU scheduling, deadlock, input and output, device drivers, memory management, file systems, protection, etc. Their understanding of these concepts will be enhanced if they are given the opportunity to examine the internal operation and source code of an actual operating system and see how the various concepts and features studied are implemented. By modifying the source code to change the behavior of the operating system or introduce new features, students can further enhance their understanding and gain valuable practical experience. This article describes the use of the Apple Macintosh version of MINIX, a UNIX look‐alike operating system available in source form, in an operating systems workshop course. The use of the Macintosh version is compared to the IBM PC version. What the students learned from the workshop assignments is discussed.     

对操作系统命令解释程序的分析

本针对用户与操作系统接口的最外层，命令解释程序的工作过程和作用，结合MSDOS和UNIX进行实例分析．     

WINDOWS 2000与UNIX在计算机房中的配合使用

微软公司推出Win2000以来，越来越多的单位和个人采用其作为系统软件，而UNIX系统在系统管理方面有其独到之处。本文就两种系统的配合使用在学校机房的权限管理问题作出一些有益的探讨，有助于提高学校机房管理的质量。     

龙芯Mipsel架构平台Linux发行版的开发

Debian GNU／Linux是Linux操作系统中一款优秀的发行版,凭借其完全免费、开放源代码、自由分发、强大的软件包管理机制以及多架构支持等特点,正获得越来越多用户的青睐．本文研究了在龙芯处理平台上Linux发行版的开发方案和实现过程．基于龙芯Mipsel架构的Linux发行版实现是其他各种龙芯应用的基础,也为Linux移植领域提供了宝贵的经验借鉴．     

UNIX网络系统的安全管理

UNIX是一个成熟的商用网络操作系统，被广泛地应用在金融、保险、邮政、学校等行业，其自身内建了丰富的网络功能，具有良好的安全性和稳定性。但是，UNIX系统的设计是基于一种开放式的体系结构，系统中集成了通信服务，存在一定程度的安全漏洞，也容易受到非法入侵。文章对UNIX系统的安全管理问题进行了讨论。     

A Network-Centric Approach to Computer Science Education and Research Based on Robotics

A network-centric university teaching and research environment based around mobile robots is described. It supports teaching a wide spectrum of computer science and engineering subjects (e.g., digital electronics, computer architecture, operating systems, communications, distributed processing, software engineering, machine vision, artificial intelligence, embedded computer design, real-time computing, HCI, computer graphics, virtual reality, etc.) within a single unified experimental environment. This enables students to combine their coursework so as to build more complex, interesting and industrially relevant systems, thereby significantly increasing their motivation and knowledge. The laboratory infrastructure makes extensive use of networks to produce a versatile and cost effective teaching and research environment. This paper will focus on the teaching aspects of the laboratory, describing the technical infrastructure and showing how it is used to support the Essex Un! iver sity information technology curriculum and report on the effectiveness of the approach. Finally, to demonstrate the more general academic synergy provided by this laboratory a short overview of some of the research applications is presented.     

Information Systems Education in the USA

Fast changing information technology (IT) has posed tremendous challenges to information systems (IS) educational programmes. One question frequently asked by IS educators has been: ‘Are we doing the right thing?’ This article presents information about the current state of IS educational programmes in the USA based on a survey of 193 higher education institutions conducted at the end of 1996. The results indicate that IS educational programmes are prevalent in the higher educational institutions. These programmes have a highly qualified faculty: 92% or more holding terminal degrees, more than two-thirds having tenure, with evidence of an increasing amount of time being devoted to research activities. It is also found that the most popular programming languages taught in both graduate and undergraduate programmes are C/C++, SQL and COBOL, and dominant operating systems are Windows/OS2 and UNIX. The most profound change over the last five years in the content of IS programmes has been the transition from text-based and centralized mainframe environment to the graphical and decentralized network based client–server architecture. This survey provides a snapshot of IS programmes, serving both to improve our understanding of current programmes and to provide a frame of reference for future studies.     

基于 ARM 的嵌入式 Web 服务器设计与实现

为解决智能家居等嵌入式系统接入互联网继而实现远程监控的问题,设计了一种基于Boa和CGI技术的嵌入式Web服务器。以S3C2440为硬件核心、嵌入式Linux为软件运行平台,在分析嵌入式Web服务器的系统结构和相关技术的基础上,给出了系统的软硬件设计方法。在智能家居控制系统中的测试结果表明,该服务器运行稳定、响应速度快,可广泛应用于数据采集、医疗看护及工业控制等领域。     

银行内部评级系统——非零售客户评级系统设计

为适应《巴塞尔新资本协议》中内部评级法的要求,加强信用风险管理能力,我国的商业银行应努力做好系统设计的建设,分析了非零售客户评级系统的设计思路,并按照软件工程原则,用现代软件技术设计了系统逻辑架构。最后探讨了IRBS系统功能模块。     

Experiences With an Open Systems Computing Laboratory

Open Systems are computing systems which are based on industry standards and nonproprietary multivendor components. As an increasing number of computing installations move away from single‐vendor proprietary architectures to more and more open architectures, academic institutions are increasingly faced with the responsibility of appropriately introducing open systems concepts into the undergraduate curricula. Using funding from the National Science Foundation, an open systems computing laboratory was recently set up at the University of Michigan‐Dearborn. The laboratory is based on the three most popular computing platforms today in the PC to Workstation range; namely IBM/PC, Macintosh, and Sun/UNIX. Supporting equipment include a postcript printer, a Novell network, a tape mass storage, and appropriate software and interfaces. A three credit‐hour course titled Open Systems Computing was offered in Summer 1995 to computer science and computer engineering majors. The course utilized the laboratory fully. This paper describes the design and implementation of the laboratory. Initial experiences with the course and laboratory are also described. Student enthusiasm about the course and laboratory was much higher than anticipated. A side benefit of the course was the ability to introduce several contemporary computing‐related topics which would have otherwise been omitted from the curriculum.     

探索大型专业软件管理模式培养学生实践与创新能力

就该校引进大型船舶CAD/CAM软件以来,在软件的维护、运行、运用以及对本科生培训等方面所作的管理工作进行总结,探索在高校中通过对大型专业软件的运行管理,培养大学生实践创新能力的方法,以及在培养面向工程的综合型、专业型和应用型人才的同时最大限度挖掘设备的使用价值。     

移植UNIX操作系统要解决的几个主要问题

本文提出了在SC环境下UNIX操作系统存在的主要问题，并简要论述了解决这些问题的方法．     

浅谈桌面操作系统Linux与Windows的异同

通过对Linux与Windows两种操作系统在系统安装、操作使用及软硬件的管理等方面的比较,总结出了两种操作系统的使用特点,能够对用户在操作系统的选择与应用中起到一定的帮助作用．     

LTSA conformance testing to architectural design of LMS using ontology

This paper proposes a new methodology for checking conformance of the software architectural design of Learning Management System (LMS) to Learning Technology System Architecture (LTSA). In our approach, the architectural designing of LMS follows the formal modeling style of Acme. An ontology is built to represent the LTSA rules and the software architecture in Acme style. Conformity of the design with LTSA rules is tested by reasoning the ontology with the query language SPARQL. A Java-based plug-in system is introduced to implement functionalities like loading the elements of the architectural design into the ontology, mapping the architectural elements with LTSA elements, and performing the conformance test. The advantage of the proposed methodology is two-folded. First, it verifies an important software quality attribute – conformance to technical standard – at an early stage of development, like high-level design phase. Secondly, instead of the conventional manual checklist based approach of conformance testing, this methodology focuses on an automated way to finding the conformance level of the system under check.     

Sensor network architecture for intelligent high-speed train on-board monitoring

The China’s high-speed railway is experiencing a rapid growth. Its operating mileage and the number of operating trains will exceed 45 000 km and 1500 trains by 2015, respectively. During the long range and constant high-speed operation, the high-speed trains have extremely complex and varied work conditions. Such a situation creates a huge demand for high-speed train on-board monitoring. In this paper, architecture for high-speed train on-board monitoring sensor network is proposed. This architecture is designed to achieve the goals of reliable sensing, scalable data transporting, and easy management. The three design goals are realized separately. The reliable sensing is achieved by deploying redundant sensor nodes in the same components. Then a hierarchal transporting scheme is involved to meet the second goal. Finally, an electronic-tag based addressing method is introduced to solve the management problem.     

基于RUP过程和B/S模式的固定资产管理系统设计

RUP过程是当前业界广泛流行的软件过程。在分析RUP过程的基础上,对以RUP为指导的、应用UML进行系统分析、设计及建模过程的方法进行了研究和实践,设计并实现了兰州石化职业技术学院的固定资产管理系统。     

基于构件的软件开发的核心技术与案例分析

基于构件的软件开发方法是一种新的软件开发框架,它是选择已经成熟的构件成品,并在一定的框架与结构下组成一个新的软件系统。因为这种新的软件开发模式与已往完全自主开发的软件开发过程不同,基于构件的软件系统的软件技术也有不同的要求与规范。本文调研了目前流行的基于构件的软件核心技术,分析比较它们的优缺点,讨论它们的特点。同时,也分析了来自企业界的著名的基于构件的软件项目。     

命令行程序的web服务化问题研究

提出了一种科学计算领域中常用的命令行程序web服务包装方法.首先给出了实现一个基本的web服务包装器的软件架构,并对主要组件的功能进行了解释.进而经过对数据传输和作业生命周期的深入分析,设计了一种新颖的文件传输和作业管理机制用以增强该软件架构,使得在命令行程序被包装成web服务的同时,保证了文件的高效传输,运行状态的即时反馈和作业的自动管理.对比实验表明,该方法在使用了较少内存的前提下提高了程序运行性能,定性比较显示程序的易用性也有所提高.本工作已经在实际的科学计算系统中得到了应用,极大地提高了系统的数据处理效率.     

飞行器管理计算机操作系统技术研究

目前国外新一代飞机的设计中,为进一步提高飞机的性能,同时降低系统费用,采用飞行器管理系统综合管理,包括飞行控制、发动机控制、机电公共设备管理等.主要描述了针对飞行器管理计算机的操作系统技术,包括系统软件结构以及在多任务分区保护的基础上,如何实现系统同步、周期任务、健康监控等.