A Software System to Solve the Multi-Criteria Optimization Problem with Stochastic Constraints

The paper presents a genetic algorithm for multicriteria optimization of parameters of a technological process, which finds a solution not from a certain point but from a specified population. The objective functions are used without their derivatives and probabilistic choice rules are applied. The multicriteria optimization is based on finding a solution that simultaneously optimizes the machining parameters defined by functions of productivity, tool consumption, tool cost, etc.     

Design of a Web-Based LBS Framework Addressing Usability,Cost, and Implementation Constraints

This research investigates barriers that prevent Location Based Services (LBS) from reaching its full potential. The different constraints, including poor usability, lack of positioning support, costs, and integration difficulties are highlighted. A framework was designed incorporating components based on existing and new technologies that could help address the constraints of LBS and increase end-user acceptance. This research proposes that usability constraints can be addressed by adapting a system to user characteristics which are inferred on the basis of captured user context and interaction data. A prototype LBS system was developed to prove the feasibility and benefit of the framework design, demonstrating that constraints of positioning, cost, and integration can be overcome. Volunteers were asked to use the system, and to answer questions in relation to their proficiency and experience. User-feedback showed that the proposed combination of functionality was well-received, and the prototype was appealing to many users. Ground-truths from the survey were related back to data captured with a user monitoring component in order to investigate whether users can be classified according to their context and how they interact. The results have shown that statistically significant relationships exist, and that by using the C4.5 decision-tree, computer proficiency can be estimated within one class-width in 76.7% of the cases. These results suggest that it may be possible to build a user-model to estimate computer proficiency on the basis of user-interaction data. The user model could then used to improve usability through adaptive user-specific customisations.     

Guest Editor's Introduction: ITC Examines How Test Helps the Fittest Survive

The theme of the 2005 International Test Conference is “Test: Survival of the Fittest.” In conjunction with this year's ITC, this special section examines how test helps the fittest of the industry's chips, boards, and systems survive manufacturing to reach its customers. These articles discuss topics such as X-tolerant test response compaction, reducing yield loss using a constrained ATPG, and using IDDQ testing with today's high background currents.     

How to Solve a Cubic Equation, Part 3: General Depression and a New Covariant

For pt.2 see ibid., vol. 26, no. 4, p. 90-100 (2006). Our ultimate goal here is twofold. We want to get insight into how cubic polynomials work, what are the invariants/covariants and their geometric interpretations. This article also describes how a transformation in parameter space relates to the transformation in coefficient space     

How Much of the Software Engineering Old Still Remains New?

Oddly enough, many software engineering issues and conflicts that were relevant 20 years ago are still relevant today.     

新型冲击测试系统软硬件设计研究

为了使冲击仪能够快速反应试验台工作情况,达到工作要求,本文设计了以DSP和FPGA作为主控芯片的新型冲击测试系统。并基于C#设计了可操作性强的人机交互软件界面,实现系统实时控制和采集数据同步进行。文中还介绍了峰值匹配法和三点匹配法,使时域数据能够精确显示。并对采集的数据进行频域的冲击响应谱分析和傅里叶分析。实验证明此系统能够实现对各种电子产品的冲击测试。     

一种解决预测控制输入信号受约束问题的方法

本文通过适当选取指标函数中各加权多项式，提出一种解决预测控制输入信号受约束问题的方法，由于使指标函数取最小值的当前控制信号与将来的控制信号无关，因而使控制算法大大简化。     

How to Determine the Expressive Power of Constraints

Some constraint languages are more powerful than others because they allow us to express a larger collection of problems. In this paper, we give a precise meaning to this concept of expressive power for constraints over finite sets of values. The central result of the paper is that the expressive power of a given set of constraint types is determined by certain algebraic properties of the underlying relations. These algebraic properties can be calculated by solving a particular constraint satisfaction problem, which we call an 'indicator problem'. We discuss the connection between expressive power and computational complexity, and show that indicator problems provide a simple method to test for tractability.     

Software Quality and Management: How the World's Most Powerful Software Makers do it

Controlling software quality is a major challenge in modern software development projects. This article looks at software development practices at the two largest producers of software, IBM and Microsoft, and compares them against the Software Engineering Institute's (SEI) Capability Maturity Model (CMM). It concludes that rigorous quality controls and the CMM's basic premise for reaching higher maturity are still the best ways to produce quality software.     

Software Quality and Management: How the World's Most Powerful Software Makers do it

Abstract

Controlling software quality is a major challenge in modern software development projects. This article looks at software development practices at the two largest producers of software, IBM and Microsoft, and compares them against the Software Engineering Institute's (SEI) Capability Maturity Model (CMM). It concludes that rigorous quality controls and the CMM's basic premise for reaching higher maturity are still the best ways to produce quality software.     

多媒体课件解决职高计算机技能训练困境的可行性分析

计算机应用培训作为普及的应用技能之一,在职高教育中的作用逐步凸显。然而多种影响职高计算机技能课程培训的因素并存,直接或间接影响着职高计算机教育的质量与效果。     

软件工程新方法--软件重构

软件重构的概念、原则,讨论了软件重构的优点和适用场合,并介绍了自动化软件重构工具。     

河南省软件职业学院发展的困境及策略

软件职业教育的成败是信息产业发展的决定因素。本文通过对河南省软件学院教育方式、环境因素和培养模式等多方面的分析,指出软件职业教育存在的问题和面临的困境,提出进行校企联合实训基地建设的策略,并给出基地建设的具体措施,为提高河南省软件人才培养能力提供了有效的解决办法。     

ERP软件包—设计与实现

随着经济的全球化,企业面临着各种各样更激烈的竞争。企业要在激烈竞争和不断变化的市场求得生存,必须采取现代化的经营管理手段,提高自身的竞争力。其中ERP是面向企业的高效率生产经营管理软件包。本文在一个通用ERP软件包开发的基础上,总结了整个开发过程及开发经验,以期对中国的民族软件的发展及中国企业ERP的顺利实施有所裨益。     

浅谈软件设计模式中的设计原则

软件设计模式中最重要的原则就是设计原则。本文结合实际的工程开发经验讨论了对软件设计模式中设计原则应用的思考,特别是＂开闭原则＂的理解,并结合实际给出了软件设计中应尽量避免的误区。     

一种新的多时区时钟软件的设计与实现

本文采用VC＋＋6．0编译器,运用API函数及类库设计与实现了一个多时区的时钟软件。该软件通过对菜单中时区的选择来切换不同时区时钟的显示,利用API计时器函数,实现了计时和时钟的每秒刷新,同时利用MFC类库函数对表盘和时钟指针进行了颜色设置,使得时钟在完成计时和日期显示功能的同时,界面更加美观。     

如何解决C/S系统中客户端的更新问题

对于传统C/S结构的应用系统,由于其在安全性和技术成熟度上的优势在目前的商业系统中仍然有着广泛的应用,但是,这种结构的最大的缺点是维护成本高,当用户需求变动时需要花费很多时间更新客户端系统。本文介绍了作者为中化天津进出口公司开发的ERP系统中是如何解决这一问题的。     

The ChoicePoint Dilemma: How Data Brokers Should Handle the Privacy of Personal Information

Before 2005, data broker ChoicePoint suffered fraudulent access to its databases that exposed thousands of customers' personal information. We examine Choice-Point's data breach, explore what went wrong from the perspective of consumers, executives, policy, and IT systems, and offer recommendations for the future.     

一种新型卫星测试操作工具软件的设计与实现

该文提出了一种卫星测试操作语言及其编译执行环境的设计方案。结合面向对象方法学、编译技术、设计模式等思想理念,成功设计和实现了一个比较通用的卫星测试操作工具软件,该软件具有时间精度高、实时性强、可靠性高、自动判读、适应差异较大的不同任务等特点。