网络环境下工资银行转存系统的实现

本文介绍了在网络环境下工资银行转存系统设计思想并用 Foxpro For DOS编程加以实现     

智能型软件加密狗

软件加密狗是一种和PC机I/O口相连接的硬件盒,它起到保护商品软件知识产权的作用.研究各种加密狗内部的电路及加密算法、程序是软件加密的一个分支.提出一种智能型软件加密狗的设计及制作.     

基于双生命周期的领域软件开发

当前软件复用的研究重点是基于构件的软件开发。介绍了利用领域工程生命周期和应用工程生命周期相结合进行领域应用软件开发的方法和基本过程,通过在物资供应领域应用该方法,验证了其有效性。     

软件开发工程

介绍了软件开发工程的基本概念,以及如何开发一个软件项目的具体措施和步骤。对于软件生存期的6个阶段,即制定计划、需求分析、软件设计、程序编制、测试及运行维护进行了叙述。     

软件质量与软件测试

软件测试是软件质量保证的关键步骤,笔者从技术、工具和管理三个角度出发论述了软件测试对软件质量的影响。     

一种具有性能约束的软构件集成模型

在具有性能约束构件模型的基础上,提出了一个由构件层和服务层组成的具有性能约束的软构件集成模型．通过服务层提供的构件性能属性识别器、构件容器、集成工具、适配器等设施的协同工作,把分布于不同网络的、基于性能约束构件模型开发的构件进行集成,实现了具有性能约束构件的集成．由于对于不具有性能约束构件的集成,该模型的构件性能属性识别器不用启动运行环境,从而节省了系统开销．该模型既考虑了具有性能约束构件的集成,又可实现一般构件的集成,有助于软件复用．     

Reusing Test Cases Based on the Function Point

Reusing test cases from existing test case library is quite common in the software testing field. Testing practice tells us that there is a strong relationship between the granularity of a function unit under testing and that of the test case. A function unit with small granularity usually results in the test cases with the same small granularity. Therefore a test case defined as the function point,i. e.,the smallest size function unit,was provided for the first time.Though test cases with smaller granularity usually have better reusability,the cost of accurately reusing and integrating such test cases is also higher. In order to balance the test case reusability and the cost of test case reuse,a novel test case reuse model based on the function point was proposed in this paper. In this model,a reusable test case for specification-based testing was defined and some reuse strategies and three formal reuse methods were given. Finally,the complete automatic software process was realized by a reusing generation tool. The new method has improved reuse accuracy,while greatly enhances the software productivity.     

基于序列挖掘的分等级搜索可持续进化算法

讨论了最大频繁序列模式和公平竞争层次模型(HFC),设计了最大频繁序列模式的挖掘算法(MFSPMA),把MFSPMA同HFC结合起来,提出了基于序列挖掘技术的分等级搜索可持续进化算法(SEAHSM).该进化算法设置多个不同层次的种群为不同适应度水平的个体提供生存空间,采用最大频繁子模式挖掘算法挖掘种群中的优良基因,并将具有优良基因模块的新个体注入到不同适应度水平的种群,从而实现遗传信息的稳定继承,有效避免优良基因的丢失.实验结果表明:SEAHSM在维持遗传信息稳定性、避免早熟收敛、提高搜索精度等方面表现良好.     

基于嵌入式Linux系统的视频监控系统

随着计算机技术的飞速发展,数字化和网络化迅速运用到社会生活中。传统的模拟闭路电视监控系统有许多不足之处:传输距离短、不能联网,传统的模拟信号的储存将消耗大量的存储介质。而具有体积小、功耗小、数字化、安装方便、价格低廉的嵌入式linux设备迅速用到各行各业中。     

汽车用废弃锂离子电池的减量化、再生及回收研究进展

The demand for Li-ion batteries (LIBs) for vehicles is increasing. However, LIBs use valuable rare metals, such as Co and Li, as well as environmentally toxic reagents. LIBs are also necessary to utilize for a long period and to recycle useful materials. The reduction, reuse, and recycle (3R) of spent LIBs is an important consideration in constructing a circular economy. In this paper, a flowsheet of the 3R of LIBs is proposed and methods to reduce the utilization of valuable rare metals and the amount of spent LIBs by remanufacturing used parts and designing new batteries considering the concept of 3R are described. Next, several technological processes for the reuse and recycling of LIBs are introduced. These technologies include discharge, sorting, crushing, binder removal, physical separation, and pyrometallurgical and hydrometallurgical processing. Each process, as well as the related physical, chemical, and biological treatments, are discussed. Finally, the problem of developed technologies and future subjects for 3R of LIBs are described.