基于Java点对点通信技术的DES密钥交换

介绍了使用Java的点对点通信技术,基于Diffie-Hellman规则,给出了IBM DES密钥交换的总体方案、算法和应用程序,详细说明了其中涉及的主要技术和方法,同时给出了在PC机上用二进制指数分解法实现大数模运算的算法分析和实现方案。     

利用Applet制作电子相册

本文通过介绍Applet的体系结构和其生命周期以及如何创建和执行Applet程序,介绍了电子相册的制作过程。     

A GRASP × ELS approach for the job-shop with a web service paradigm packaging

The Job-Shop Scheduling Problem (JSSP) is well known for its complexity as an NP-hard disjunctive scheduling problem. The problem addressed in this paper is JSSPs with an objective of minimizing makespan while satisfying a number of hard constraints. An efficient GRASP × ELS approach is introduced for solving this problem. The efficiency is evaluated using the widely known 40 Laurence’s instances which encompass medium and large scale instances. The computational results prove that the proposed method competes with the best published methods in both quality of results and computational time. Recently, Web services have generated great interest in researchers. Such application architecture is based on the client–server model using existing Internet protocols and open standards. It provides new approaches to optimization methods. The proposed GRASP × ELS is packaged into a Web Service (WS), i.e., it offers for the research community an open access to our optimization approach. Moreover, the proposed web service can be even included in research future works with a very small programming effort.To favor utilization of the web service and to prove the facility in which the service could be used, we provide an example in Java proving that it is possible to obtain in less than 10 min a client application using the different methods exposed by this web service. Such usage extends to classical library inclusion in program with the difference that a method is called in the client side and represents an execution on the server.The Web Service paradigm is a new approach in spreading algorithms and therefore this paper stands at the crossroads of optimization research community and the web service community expectations. The GRASP × ELS provided in the web service, is a state of the art method which competes with previously published ones and which has the advantage of being available for free, in any languages, everywhere contributing in spreading operational research contribution.     

Java课程教学改革的探索与实践

传统的Java课程教学模式,已不能满足市场对人才的需求,也不符合我院培养应用型人才的办学定位。为此,从教学内容、教学方法、实践环节以及考评方式等方面对Java课程改革进行探讨并予以实践,从而提高教学质量．以更好地适应Java人才的社会需求。     

传统PLC远程通信的改进方法

传统PLC远程通信是基于相应PLC远程通信硬件模块或者构建VPN通道形式进行通信,在成本上需要支付相应的硬件费用与通信费用,相应硬件模块占用额外空间,并且某些单位出于安全角度并不对外开放VPN通道.该文主要设计思路为,在WinCC7.0软件中运用VB语言编程访问SQL Server 2005实现报表输出,通过编写Windows脚本定时自助发送文档报表的形式来解决远程通信问题.省去了部分通信硬件,方法简单实用,不需要现场人员具有较高的计算机水平,跳过VPN通道,克服传统方式存在的不足.     

JSTAMP/NV自动报告书功能详解及其应用

为使冲压仿真工程师高效地整理仿真结果并生成仿真报告,介绍JSTAMP/NV软件的自动报告书功能及其操作流程;以自动生成汽车翼子板的拉深工序的仿真报告为例,详细说明JSTAMP/NV自动报告书功能的使用.该功能可显著减少制作仿真报告的工作量.     

微信公众号服务网站在BAE3.0上的设计与实现

介绍了一种在BAE3.0上搭建Java-Tomcat类型的微信公众号服务网站的设计思路,以及使用百度开放云上的应用引擎、MySQL数据库、分布式日志服务和百度云存储等相关资源实现微信公众号服务网站的一般过程。     

基于 ARM9的便携式网络监控取证系统设计与实现磁

针对传统监控取证系统体积大、移动性差、成本高等不足,运用嵌入式技术,视频处理技术及无线网络传输技术,设计了一种基于 ARM9的便携式网络监控取证系统[3]。该系统以 ARM9芯片 S3C2440为硬件平台,以 Linux 操作系统为软件开发平台,将 USB 摄像头采集到的图像数字化后经过 MPEG-4压缩算法的处理,通过构建嵌入式 Web 服务器[2]以及 Java Applet 技术[1],实现了远程监控端通过 IE 浏览器对现场的监控取证,最终形成了一套集视频采集、预处理、存储、显示、传输为一体的便携式视频监控取证终端系统。     

项目化教学在分组模式中的实现

项目化教学是通过实施一个完整的项目工作而进行的活动。以《Java程序设计》课程为例,将项目化教学在分组模式中实现,不仅能提高学生主体能动性和综合运用能力,还培养了学生团队合作精神和解决问题的能力,为其今后符合企业要求的高技能软件人才奠定基础。     

基于Java 3D的地球空间环境可视化研究

根据空间科学研究对交互性和Web化的发展需求,将Java 3D应用于该领域。深入剖析了Java 3D的主要几何类和实现细节;改进并实现了一种矩形网格等值线生成算法,解决了二义性和等值点在网格顶点的问题;介绍了一种生成规则网格的简单算法,并选用合适的Java 3D类加以实现;介绍了一种数值———颜色映射算法,并将空间环境数据映射为RGB颜色信息。综合运用这些算法,对地球空间环境中若干物理要素模型进行了二维和三维可视化。可视化结果与国内外空间环境模型研究成果基本一致,说明上述算法正确,有较高的参考价值。