多核环境下面向仿真组件的HLA 成员并行框架

提出了一种面向仿真组件的并行联邦成员框架,以解决基于HLA(high level architecture)复杂仿真系统联邦成员开发的问题,并提升多核处理器环境下联邦成员的运行性能.并行联邦成员框架通过仿真组件的组合、装配来构建联邦成员.通过仿真引擎管理、数据分发管理、对象管理、组件管理服务和负载平衡功能,并行联邦成员框架为仿真模型构建了一个多核的并行执行环境,并确保并行成员能与RTI正确交互.通过实验来研究并行成员框架引入的额外开销,并比较并行成员和普通成员的性能.实验结果表明,并行框架能够充分利用多核处理器的计算能力来减少仿真系统运行时间,提高系统性能.     

基于组件技术的列车自动监控仿真系统开发平台

针对轨道交通列车自动监控(ATS)仿真系统开发的需要和现状,提出并设计了一种基于组件技术的ATS仿真系统交互式开发平台.该开发平台通过对ATS仿真系统组件进行统一管理,绘制站场运行图,生成站场型数据,交付给仿真运行框架,最终实现ATS仿真系统.     

软件框架技术在BOM组件开发中的应用

基于BOM的仿真系统开发具备诸多优点,但仿真模型组件开发及测试也存在辅助过程复杂、工作量大、协调困难等问题,为辅助仿真模型组件开发及测试,文章借助于软件框架技术,建立了一套配置简单、资源需求小的仿真组件开发辅助框架,通过该框架可减小组件开发中的迭代活动涉及范围,降低组件修改带来的附加工作量,加快仿真组件开发进度。     

舰空对抗智能行为仿真框架设计研究

现在舰艇作战仿真系统存在各子系统间耦合性强的问题,不利于系统的扩展与使用.针对以上问题,通过分析虚拟海战场环境对实体对象行为仿真的要求,结合某训练模拟系统战场环境仿真分系统的研制项目,以舰空对抗作战想定为实例,对实体行为仿真框架(Sensors,Actuators,Controllers,Connections,简称SACC)进行了研究,得出了组成舰空对抗作战想定行为仿真框架的各子系统模型,并抽取组成各子系统模型的各行为组件结构层作为系统可复用的元素,将组件及组件连接关系以结构化参数的形式进行配置,即利用每一仿真子系统中的各模型组件接口来实现模型组件之间数据的交互.结果表明,该方法可以较好地解决上述问题,使仿真系统具备良好的可复用性和可扩展性,更加满足作战仿真的需求.     

作战仿真系统联邦成员与联邦组件交互研究

目前,利用作战仿真系统进行军事训练逐渐得到世界各国的重视,COM作为作战仿真系统的主要支撑技术之一,得到了飞速的发展.联邦成员与联邦组件的交互是作战仿真系统联邦成员设计与实现的一个重要组成部分.文中在阐述了COM概念的基础上给出了坦克分队作战仿真系统联邦成员的基本结构,分析研究了联邦成员与联邦组件的交互过程,给出了坦克分队作战仿真系统联邦成员的接口实现程序框架.     

基于组件的舰载近程防御系统仿真研究

针对常规舰载近程防御仿真系统移植性较差的问题,充分利用组件开发易扩展、可复用的优势,给出了一种舰载近程防御系统仿真设计方案.首先,给出了系统总体框架;采用接口和实现分离原理,构建了组件接口,并给出了接口函数的规范化定义;其次,采用类厂模式和动态加载方式,设计了系统仿真引擎.最后,通过舰载近程防御系统仿真系统试验,验证了设计方案的合理性和可行性.     

嵌入式软件可靠性仿真测试环境框架

提出了一种针对嵌入式软件进行可靠性测试的仿真测试环境框架。分析了仿真测试环境的系统特性并对其功能组件进行了介绍，对测试环境中的测试运行时组件进行了功能需求的分析，构建出测试运行时组件的框架实现，借助于UML中的抽象类图和顺序图描述对框架的静态特征和动态特征作了介绍，总结了利用框架实现仿真测试环境的优势。     

嵌入式软件可靠性仿真测试环境框架

提出了一种针对嵌入式软件进行可靠性测试的仿真测试环境框架。分析了仿真测试环境的系统特性并对其功能组件进行了介绍，对测试环境中的测试运行时组件进行了功能需求的分析，构建出测试运行时组件的框架实现，借助于UML中的抽象类图和顺序图描述对框架的静态特征和动态特征作了介绍，总结了利用框架实现仿真测试环境的优势。     

1553B总线通用仿真测试系统运行支撑平台的实现

航电系统是现代飞机的一个重要组成部分,构建一个1553B机载总线通用仿真测试系统,该系统可以实现对飞机航电系统的测试及故障定位,并为航电设备的开发提供一个调试平台。为了对某新型国产飞机航电设备进行测试及故障定位,搭建了1553B机载总线仿真测试系统运行支撑平台。该平台采用了组件技术,使其具有通用性及可扩展性,分析了该平台的组件结构,给出了各功能组件的具体实现。采用"应用程序框架+可复用组件"的开发方法,设计了1553B机载总线通用仿真测试系统运行支撑平台开发框架。     

组件式机械仿真流程建模平台的设计与实现

在具体分析WFMC规范基础上,结合组件开发思想,采用Java语言,利用EMF和GEF技术,根据仿真流程实际需要抽象成仿真组件,实现了组件式机械仿真流程建模平台,并简要介绍了流程在执行期间的状态表示机制.根据抽象出的13个静力学仿真组件,利用此建模平台完成了针对机械产品静力学仿真流程模型的建立,并从语法上对流程进行了有效性检验,证明了平台的适用性和灵活性.     

特大城市可持续养老服务系统模型构建

针对特大城市特点及其养老趋势,提出一种灵活多样、良性开放的可持续养老模式：集体自助养老（CSE）,对其定义、目标、类型、影响因素进行分析。结合六西格玛服务设计、产品服务系统设计、可持续养老理论,围绕养老目标,建立可持续养老CSE服务系统设计理论体系。可持续养老服务系统设计存在若干可行解,围绕提升养老满意度,提出CSE服务系统设计框架,充分利用信息化社会优势,对CSE产品与服务进行集成设计,建立CSE服务系统配置模型,分析了CSE服务系统选择、构建影响因素,根据不同的养老需求和有限的养老资源、成本设计不同的集体自助养老方案,满足特大城市多元化、个性化的养老需求,为可持续养老服务系统设计提供有益思路,为特大城市养老资源配置、养老基础设施建设提供参考。     

机械产品协同仿真环境及其关键技术

机械产品设计阶段产品性能仿真分析的广泛应用要求对仿真流程和仿真数据进行有效管理.提出了协同仿真环境的解决方案,并分析了其功能框架和体系结构,研究了基于XML的多层次仿真数据管理技术进行仿真数据的分类和层次化管理、基于工作流管理技术的仿真流程控制技术进行仿真流程的管理等关键技术.在解决方案及其关键技术的基础上,开发了某悬挂系统协同仿真环境的流程建模平台和Web门户,可大幅缩短产品仿真周期并有效提高产品设计效率.应用实例验证了方法的有效性.     

Adapting to change and uncertainty

Understanding how people adapt to change and uncertainty is critical to system design, and good system design expands the ability of people to adapt. Cognitive systems engineering (CSE) enables us to understand work domains, reveal expertise, and derive essential features for systems. This is valuable because the demand for rapidly evolving systems such as information and communication technology does not allow for long-term deliberation by system developers. The publication of work by Norman, Hollnagel and Woods, and Rasmussen in the early 1980s provides an opportunity to consider where CSE stands nearly 30?years since its inception. The papers in this special issue of Cognition, Technology and Work convey insights from authors who have substantial firsthand experience with the use of CSE to study human adaptation to changing, uncertain work settings. Their research demonstrates the current state of CSE, the potential for CSE to reveal how people adapt to change and uncertainty, and implications for the design of complex adaptive systems.     

Cognitive engagement with a multimedia ERP training tool: Assessing computer self-efficacy and technology acceptance

Computer self-efficacy (CSE) is a person's judgment of his or her ability to use a computer system. We investigated cognitive engagement, prior experience, computer anxiety, and organizational support as determinants of CSE in the use of a multimedia ERP system's training tool. We also examined the impact of CSE on its acceptance. We determined the benefits of a sequential multi-method approach using structural equation modeling and neural network analysis. High reliability predictions of individual CSE were achieved with a sequential multi-method approach. Specifically, we obtained almost 68% perfect CSE group prediction overall, with almost 85% perfect CSE group prediction using fuzzy sets and over 94% accuracy within one group classification. The resulting CSE assessment and classification enables management interventions, such as allocating users to appropriate instruction for more effective training.     

Delineating the effects of general and system-specific computer self-efficacy beliefs on IS acceptance

This paper discusses extensions to previous research on computer self-efficacy (CSE) and systems acceptance by examining the impact of multilevel CSE on IS acceptance. Based on the technology acceptance model (TAM), we examined the effects of general and system-specific CSE on perceived ease of use, perceived usefulness, and behavioral intention to use a system. The results of a field experiment indicated that system-specific CSE represented a stronger predictor of perceived usefulness and behavioral intention than general CSE. In contrast, general CSE had a stronger effect on perceived ease of use. The research and practical implications of these findings are discussed.     

Computer-Related Task Performance: A new perspective

The existing information system (IS) literature has acknowledged computer self-efficacy (CSE) as an important factor contributing to enhancements in computer-related task performance. However, the empirical results of CSE on performance have not always been consistent, and increasing an individual's CSE is often a cumbersome process. Thus, we introduce the theoretical concept of self-prophecy (SP) and examine how this social influence strategy can be used to improve computer-related task performance. Two experiments are conducted to examine the influence of SP on task performance. Results show that SP and CSE interact to influence performance. Implications are then discussed in terms of organizations’ ability to increase performance.     

Effects of computer self-efficacy and system reliability on user interaction with decision support systems

Computer self-efficacy (CSE) has been identified as a major determinant of computer-related ability and usage in organizational contexts. However, there has been little research on the impact of CSE on the use of high level computerized systems such as decision support systems. In order to examine this relationship, participants completed a visual search task with the assistance of an automated decision support system which varied in reliability from moderately reliable (70%) to highly reliable (90%). After completion of the task, a median split was performed on participants’ CSE scores to divide participants into high-CSE and low-CSE groups. We examined the relationship between CSE and trust and utilization of the system. High-CSE participants trusted the system more, complied with it more and generated significantly more hits than low-CSE participants, particularly on trials in which the aid was highly reliable. This indicated that high-CSE levels led to a better ability to gauge the true capabilities of the system. However, all participants uniformly underestimated the true reliability of the system at both levels of CSE. This study provides insight into the potential significance of personality factors in shaping human–technology interaction and has implications for designers of automated systems.     

Understanding the continuance use of social network sites: a computer self-efficacy perspective

Based on social cognitive theory and the balanced thinking–feelings model, this study proposes a research model to examine the different roles of general computer self-efficacy (CSE) and specific CSE. The research model was tested with a survey of university students in Singapore in the Facebook context. It is found that while general CSE affects continuance intention through both cognition and affection, specific CSE mainly affects continuance intention through cognition. It is also found that general computer experience affects general CSE only and specific computer experience affects specific CSE only.     

净室软件工程在CMM中的应用技术研究

净室是一种追求开发的零缺陷，以经济的方式生产高质量软件产品的新型软件技术。该文通过介绍CMM和净室软件工程技术，对净室技术在CMM的应用实践中遇到的问题作了分析，提出了基于CMM的净室裁剪的原则，从而给出了一种裁剪后的净室技术对各级CMM关键域的支持方案。