高性能模拟呼叫器的研制

针对国内高性能、大话务量模拟呼叫器的设计实现难、可靠性低的情况，提出了采用国际前沿技术，以数字信号处理技术（ＤＳＰ）为核心的多处理器结构（ＣＰＵｓ），来实现模拟呼叫器的设计思想，从而在根本上填补了国内测试领域的这一空白。详细介绍了模拟呼叫器的基本原理、硬软件设计和实用情况，从理论和实践两方面验证了该方法的先进性和实用性。     

基于VaIgrind中间语言的测试用例动态生成

软件漏洞是软件在设计实现时由于软件功能自身的复杂性和抽象性,导致在具体实现时所引起的缺陷。测试用例在检测软件缺陷时能够起到指导作用,在研究VaIgrind中间语言的基础上,针对STP求解器的语言特点,设计实现了一个测试用例动态生成的系统,对其中的主要设计思想进行了阐述,并对该系统进行了程序测试,对最终的测试性能给出了结果。     

OSPF协议性能测试的研究与实践

作为在Internet中广泛使用的一种内部网关协议，OSPF路由器的性能对网络的整体性能有着重要的影响。本文使用黑盒测试方法，用网络拓扑环境模拟软件NS仿真多种网络环境，对实现OSPF的路由软件gated进行了测试，测试了OSPF的时间性能。并对测试结果进行分析，讨论了网络拓扑环境等因素对OSPF性能的影响。     

基于组态软件的列车防滑器电磁阀组件性能测试技术研究

传统的阀门性能测试,阀门的开启、关闭、气路的控制以及最后的数值记录都是由工人现场手工完成.这样的测试方法受工人主观因素和现场环境的影响,测试结果不能得到保证.针对这些缺陷,利用国产组态软件PCAuto为列车防滑器电磁阀组件性能测试开发了一个自动测试系统.在该测试系统中,借助组态软件提供的实时控制功能和实时数据库功能,实现了整个测试过程的自动控制和数据的实时记录.同时还实现了测试过程的动态可视化控制,对测试参数进行采集和集中管理,并能对测试过程进行监控报警,自动生成历史报表和实时报表.目前该系统已经投入使用,运行良好.     

基于PKS体系的终端性能场景验证方法研究

近年来计算机硬件软件体系国产化发展迅速，中国电子主导构建的通用技术架构和生态体系Phytium KylinSecurity (PKS)也越来越成熟。目前关于终端性能场景验证方法的研究大多基于非国产化体系设备，缺少针对性，很难完全发掘出国产计算机硬件软件体系的问题。提出了一种基于PKS体系的终端性能场景验证方法研究，并对国内常见的国产设备进行了终端性能场景验证方法的对比测试，实验结果显示提出的基于PKS体系的终端性能场景验证方法研究对于国产化设备可以进行更加针对、深入的测试，同时满足了国内终端性能场景验证的需求，实现了国产设备系统化自主检验。     

半监督软件缺陷挖掘研究综述

软件质量是计算机系统安全可靠运行的保障,而软件缺陷是导致软件质量低下的重要诱因。软件缺陷挖掘技术凭借其能够通过对软件代码及其相关数据进行分析建模,发现软件系统潜在的缺陷,已得到了软件质量保障领域的广泛关注。要准确发现软件模块中潜在的缺陷,需要利用大量带有缺陷情况标注的模块进行学习。然而,缺陷情况标注往往需要通过详细测试或人工代码检查获取,要消耗大量测试和人工资源,在实际应用中难以满足,这严重制约了软件缺陷挖掘的性能。针对这一问题,半监督学习技术被引入软件 缺陷挖掘,通过对大量缺少标注的模块进行利用,辅助提升软件缺陷挖掘的性能。本文对半监督缺陷挖掘技术的研究现状进行综述。首先综述了软件缺陷挖掘研究现状,然后简要介绍了半监督学习的4种学习范式;最后系统梳理了基于半监督学习进行软件缺陷挖掘的多种方法与技术。     

小型直流电机参数微机自动控制测试系统

本文分析了基于单板机，单片机测试系统的缺陷，提出了基于微机的自动控制测试系统的硬件和软件设计方法，并对两种测试系统的性能特点进行了比较；最后以测试汽车起动电机为例，给出了直流电机测试系统的设计方法。     

基于GPS的弹射试验测试装置的研究

论述了基于SuperstarⅡ GPS-OEM板弹射试验测试装置软、硬件实现方法．对主要硬件电路的设计进行了分析，阐述了Superstar Ⅱ OEM板数据形式和数据结构，并给出了OEM板原始数据采集处理及存储软件流程。它的实现将为我国研究弹射座椅救生性能的测试试验提供一种新的手段和方法。     

内核同步对象异常处理健壮性测试

提出了一种新的评价程序健壮性的指标——内核同步对象异常处理健壮性，描述了在Win32平台下利用软件缺陷注入技术进行这种健壮性测试的方法，并且在实际测试环境下对一些广泛使用的软件进行了测试，结果显示，这些软件在处理内核同步对象异常时存在着不同程度的不完善。     

软件黑盒测试中SPR的规范化管理方法

在软件开发过程中,对所开发的软件进行测试,是保证软件质量必不可少的手段。黑盒测试方法是在无需了解软件内部逻辑结构的情况下,测试软件是否达到了预期要求。软件质量工程师要根据软件发生缺陷的外在现象提出软件问题报告(SPR),供软件开发工程师参考。本文着重讨论了软件黑盒测试中如何在软件开发工程师和软件质量工程师之间实现规范化信息交流的一种方法。     

Only connect: teaching, technology and telesis

Abstract This paper describes an approach to the design of interactive multimedia materials being developed in a European Community project. The developmental process is seen as a dialogue between technologists and teachers. This dialogue is often problematic because of the differences in training, experience and culture between them. Conditions needed for fruitful dialogue are described and the generic model for learning design used in the project is explained.     

European Community policy and the market

Abstract This paper starts with some reflections on the policy considerations and priorities which are shaping European Commission (EC) research programmes. Then it attempts to position the current projects which seek to capitalise on information and communications technologies for learning in relation to these priorities and the apparent realities of the marketplace. It concludes that while there are grounds to be optimistic about the contribution EC programmes can make to the efficiency and standard of education and training, they are still too technology driven.     

一种自适应子融合集成多分类器方法

融合集成方法已经广泛应用在模式识别领域,然而一些基分类器实时性能稳定性较差,导致多分类器融合性能差,针对上述问题本文提出了一种新的基于多分类器的子融合集成分类器系统。该方法考虑在度量层融合层次之上通过对各类基多分类器进行动态选择,票数最多的类别作为融合系统中对特征向量识别的类别,构成一种新的自适应子融合集成分类器方法。实验表明,该方法比传统的分类器以及分类融合方法识别准确率明显更高,具有更好的鲁棒性。     

煤矿井下安全监控分站的设计及其仿真实现

为了设计一种具有低成本、低功耗、易操作、功能强且可靠性高的煤矿井下安全分站,针对煤矿安全生产实际,文章提出了采用MCS-51系列单片机为核心、具有CAN总线通信接口的煤矿井下安全监控分站的设计方案;首先给出煤矿井下安全监控分站的整体构架设计,然后着重阐述模拟量输入信号处理系统的设计过程,最后说明单片机最小系统及其键盘、显示、报警、通信等各个组成部分的设计;为验证设计方案的可行性与有效性,使用Proteus软件对设计内容进行仿真验证,设计的煤矿井下安全监控分站具有瓦斯、温度等模拟量参数超标报警功能和电机开停、风门开闭等开关量指示功能;仿真结果表明:设计的煤矿井下安全监控分站具有一定的实际应用价值.     

Avoiding semantic and temporal gaps in developing software intensive systems

Development of software intensive systems (systems) in practice involves a series of self-contained phases for the lifecycle of a system. Semantic and temporal gaps, which occur among phases and among developer disciplines within and across phases, hinder the ongoing development of a system because of the interdependencies among phases and among disciplines. Such gaps are magnified among systems that are developed at different times by different development teams, which may limit reuse of artifacts of systems development and interoperability among the systems. This article discusses such gaps and a systems development process for avoiding them.     

Designing economic np control charts: A programmed simulation approach

This paper presents control charts models and the necessary simulation software for the location of economic values of the control parameters. The simulation program is written in FORTRAN, requires only 10K of main storage, and can run on most mini and micro computers. Two models are presented - one describes the process when it is operating at full capacity and the other when the process is operating under capacity. The models allow the product quality to deteriorate to a further level before an existing out-of-control state is detected, and they can also be used in situations where no prior knowledge exists of the out-of-control causes and the resulting proportion defectives.     

The development of robot art

Going through a few examples of robot artists who are recognized worldwide, we try to analyze the deepest meaning of what is called “robot art” and the related art field definition. We also try to highlight its well-marked borders, such as kinetic sculptures, kinetic art, cyber art, and cyberpunk. A brief excursion into the importance of the context, the message, and its semiotics is also provided, case by case, together with a few hints on the history of this discipline in the light of an artistic perspective. Therefore, the aim of this article is to try to summarize the main characteristics that might classify robot art as a unique and innovative discipline, and to track down some of the principles by which a robotic artifact can or cannot be considered an art piece in terms of social, cultural, and strictly artistic interest. This work was presented in part at the 13th International Symposium on Artificial Life and Robotics, Oita, Japan, January 31–February 2, 2008     

View-based model-driven architecture for enhancing maintainability of data access services

In modern service-oriented architectures, database access is done by a special type of services, the so-called data access services (DAS). Though, particularly in data-intensive applications, using and developing DAS are very common today, the link between the DAS and their implementation, e.g. a layer of data access objects (DAOs) encapsulating the database queries, still is not sufficiently elaborated, yet. As a result, as the number of DAS grows, finding the desired DAS for reuse and/or associated documentation can become an impossible task. In this paper we focus on bridging this gap between the DAS and their implementation by presenting a view-based, model-driven data access architecture (VMDA) managing models of the DAS, DAOs and database queries in a queryable manner. Our models support tailored views of different stakeholders and are scalable with all types of DAS implementations. In this paper we show that our view-based and model driven architecture approach can enhance software development productivity and maintainability by improving DAS documentation. Moreover, our VMDA opens a wide range of applications such as evaluating DAS usage for DAS performance optimization. Furthermore, we provide tool support and illustrate the applicability of our VMDA in a large-scale case study. Finally, we quantitatively prove that our approach performs with acceptable response times.     

Explanation and prediction: an architecture for default and abductive reasoning

Although there are many arguments that logic is an appropriate tool for artificial intelligence, there has been a perceived problem with the monotonicity of classical logic. This paper elaborates on the idea that reasoning should be viewed as theory formation where logic tells us the consequences of our assumptions. The two activities of predicting what is expected to be true and explaining observations are considered in a simple theory formation framework. Properties of each activity are discussed, along with a number of proposals as to what should be predicted or accepted as reasonable explanations. An architecture is proposed to combine explanation and prediction into one coherent framework. Algorithms used to implement the system as well as examples from a running implementation are given.     

A pragmatic multi-method investigation of discrepant technological events: Coping,attributions, and ‘accidental’ learning

Discrepant technological events or situations that entail a problem, a misunderstanding or a difficulty with the Information Technology (IT) being employed, are common in the workplace, and can lead to frustration and avoidance behaviors. Little is known, however, about how individuals cope with these events. This paper examines these events by using a multi-method pragmatic approach informed by coping theory. The results of two studies – a critical incident study and an experiment – serve to build and test, respectively, a theoretical model that posits that individuals use a variety of strategies when dealing with these events: they experience negative emotions, make external attributions, and adopt engagement coping strategies directed at solving the event, eventually switching to a disengagement coping strategy when they feel they have no control over the situation. Furthermore, users’ efforts may result in ‘accidental’ learning as they try to overcome the discrepant IT events through engagement coping. The paper ends with a discussion of the results in light of existing literature, future opportunities for research, and implications for practice.