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摘要： Reviews the book `The Java Programming Language,' by Ken Arnold and James Gosling.

关键词： Java   parallel programs   Navier-Stokes  

摘要： The Java programming language has a number of features that make it attractive for writing high-quality, portable parallel programs. Aobject formulation, strong typing and the exception model make programs easier to create, debug and maintain. The elegant threading provides a simple route to parallelism on shared-memory machines. Anticipating great improvements in numerical performance, this paper presents a suite of simple programs that indicate how a pure Java Navier-Stokes solver might perform. The suite includes a parallel Euler solver. We present results from a 32-processor Hewlett-Packard machine and a 4-processor Sun server. While speedup is excellent on both machines, indicating a high-quality thread scheduler, the single-processor performance needs much improvement. (C) 2000 Published by Elsevier Science Ltd. Ail lights reserved.

关键词： programmed instruction   learning   computer-based instruction   Java  

摘要： A programmed instruction approach to knowledge acquisition is operationalized by student-teacher interactions that involve monitoring and managing the moment-by-moment progress of a learner throughout the process of achieving a criterion of mastery in a knowledge domain. The teacher is generic and may include another person, a structured text, or a computer. When the steps and increments leading to a task's completion and mastery can be enumerated, the process of interaction-based learning lends itself to implementation with computer-based tutoring systems. The present paper describes a computer-based programmed instruction tutoring system that teaches a learner how to write a simple Java(TM) computer program. The system is based on a series of Java Applets, which are computer programs that are downloaded from a network server and executed by a client browser such as Netscape(R) The use of Java Applets makes the tutoring system available to learners over the World Wide Web. Performance acquisition data are presented to show an individual learner's progression to task completion and mastery using the tutoring system. Survey data are presented to show the subjective responses of a class of students to the use of the tutoring system. The adoption of this computer-based tutoring system is justified as one component within a personalized system of instruction that also includes lectures and collaborative learning experiences. (C) 2000 Elsevier Science Ltd. All rights reserved.

关键词： JAVA语言   程序设计   JAVA语言   程序设计  

摘要： 本书全面、系统地介绍了Java语言的编程方法。包括：Java语言的产生和发展、Java语言的基本概念和语法、Java小应用程序、图形用户界面、网络通信、利用AWT进行图形用户界面设计的方法等。

关键词： hematopoietic neoplasms   immunophenotyping   flow cytometry   Java   World Wide Web  

摘要： We describe the implementation of a Java-based application for differential diagnosis of hematopoietic neoplasms using immunophenotyping by flow cytometry. The current version of this Java applet includes the knowledge-base for 33 hematopoietic neoplasms and 43 diagnostic immunophenotyping markers. Java, a new object-oriented computing language, helps facilitate development of this applet, a platform-independent module that can be implemented on the World Wide Web. As the Web rapidly becomes more accessible to users around the world, Web-based software may eventually form the core of decision-support systems in clinical settings. Java-based applications, such as the one described in this paper, are expected to contribute significantly in this area. (C) 2000 Elsevier Science Ltd. All rights reserved.

关键词： PROGRAMMING languages (Electronic computers)  

摘要： Unveils the graphical programming language C# from Microsoft Corp., which is intended for the interoperation of Windows operating systems with other platforms through Web services. Claims of the company's executives on C#; Capabilities of the program language; Features.

关键词： Java技术   数字签名   授权访问   Internet网   密码学  

摘要： Java技术在Internet上得到广泛应用,但Java小程序(Applet)却极易被非授权者非法使用.文章提出了一种基于数字签名的Java程序授权访问机制,可以有效地确保Java程序只在经授权的客户机上运行,保护了程序作者的版权与经济利益,也适用于需要计费的网络服务.

关键词： 计算机   软件   面向对象技术   程序设计   JAVA  

关键词： PAR方法   APLA语言   迭代算子   自定义类库   程序转换  

摘要： 该文共分为五部分.第一章概述了形式倾方法;第二章着重讨论自定义Java类库的设计和实现;第三章阐述工算子的研究、实现和应用;第四章说明程序转换器的实现技术及应用实例;第五章对整个工作做了总结和展望.

关键词： Java   线程   信息包   网络应用程序设计  

摘要： 在分析网络应用程序设计原则的基础上 ,阐述了 Java语言所特有的功能、结构、机制、网络应用程序 ,进而说明