利用仿真软件优化电磁场与电磁波教学

针对电磁场与电磁波课程理论公式复杂、相关概念模型抽象的特点,结合长期积累的教学经验,利用软件仿真将电磁场定理模型、分布特性可视化,简化推导计算过程,优化课程结构、节省课时的同时提高了教学效果。     

炼化企业设备管理信息化建设的现状及建议

简要分析了目前炼化企业设备管理信息化建设的现状及存在问题,对炼化行业使用的部分设备管理软件做了简单介绍,提出了在炼化企业设备管理信息化建设过程中的几点建议.     

扫描仪面框注塑件翘曲变形的模拟分析

以扫描仪面框薄壁件注塑成型为例，应用Moldflow软件分析了模具温度、熔体温度、浇口位置和保压参数对翘曲变形的影响规律，提出了减小翘曲变形的工艺措施，分析结果与生产实际吻合。     

基于Virtools软件的虚拟现实技术在谢公祠交互认知的应用

基于Virtool软件的虚拟现实技术应用在谢公祠的保护和研究中,可以实现虚拟体验、时空转换、构件分析等交互功能.本文介绍了实现这些功能的软件处理方法以及效果,展望了该软件用于建筑保护工作和科学普及的应用前景.     

基于方程式逆序数的软件水印算法*

针对方程式重排序等算法存在的程序运行速度、信息隐藏量等问题,提出基于方程式操作数系数排列逆序数的软件水印算法。重新排列那些可以相互交换的操作数,使各操作数的系数按照一定次序排列。通过排列的逆序数和二进制数的一一对应关系来隐藏水印。这一方法无须向程序中添加任何代码,并且能有效提高隐藏数据的效率,程序的规模和速度并不受影响。     

自适应演化软件研究进展*

自适应演化软件通过演化技术,为软件添加动态、柔性以及灵活可变的特征,使软件系统能更好地适应动态、开放以及难控的网络环境,并在普适计算、嵌入计算等领域表现出良好的应用前景,成为当前软件技术研究中备受关注的热点之一。为更好地研究自适应演化软件,需对现有研究成果进行总结和归纳。首先总结自适应演化的基本特征,指出其面临的挑战;在此基础上,从语言、体系结构和框架应用层面描述其研究成果,并对其进行分类与比较,进而给出相关概念结构;最后总结了其不足以及进一步的研究问题。     

基于EM-GA改进贝叶斯网络的研究及应用*

为了解决软件风险分析中可能出现的数据不完整以及影响因素间关系复杂的问题,提出了一种改进贝叶斯网络的软件项目风险分析方法。将遗传算法和EM算法相结合得到EM-GA算法,利用EM-GA算法对软件项目分析过程中贝叶斯网络结构中的参数进行学习,同时优化网络结构,通过实例验证了该方法的有效性及可行性。     

基于本体的可信软件演化框架模型*

为系统化地考虑开放环境对软件可信性的影响和驱动作用,提出了一种基于本体空间并支持动态演化的框架模型。该模型采用本体空间的方法解决用户、系统和环境三者之间交互的语义问题,在此基础上,通过预定义的规则对软件行为的可信性和自主调整的必要性进行评估,依据评估结果从微观层次的规约制导和宏观层次的人机协同在软件生命周期内对其调整、配置与修正。应用实例及测试结果验证了该框架模型的有效性与可行性。     

Modeling the Value-Based Software Process with Object-Petri-Nets

Commercial organizations increasingly need software processes sensitive to busi- ness value, quick to apply, supportive of multi-stakeholder collaboration, and capable of early analysis for subprocess consistency and compatibility. This paper and a companion paper \Applying Value-Based Software Process: An ERP Example" present our experience in ap- plying a lightweight synthesis of a Value-Based Software Quality Achievement (VBSQA) process and an Object-Petri-Net (OPN) based process model to achieve a stakeholder win- win outcome for software quality achievement in an ERP software project in China. We attempt to answer such questions as (1) whether it is possible to model various project stakeholder perspectives using formal process modeling languages in a real-world project? (2) how to make stakeholders synchronize and stabilize their value propositions, activities and commitments as needed. The companion paper presents the VBSQA process and its application to the ERP project; this paper presents the OPN-based process modeling and its application. The application results of OPN process modeling conˉrmed that (1) the OPN- based process model provided project managers with a synchronization and stabilization framework for process activities, success-critical stakeholders and their value propositions; (2) process visualization and simulation tools signiˉcantly increased management visibility and controllability for the success of the software project.     

Exploiting Ontology for Software License Agreements

Software end-users need to sign licenses to seal an agreement with the product providers. Habitually, users agree with the license (i.e. terms and conditions) without fully understanding the agreement. To address this issue, an ontological model is developed to formulate the user requirements and license agreements formally. This paper, introduces ontological model that includes the abstract license ontology of common features found in di?erent license agreements. The abstract license ontology is then extended to a few real world license agreements. The resulting model can be used for di?erent purposes such as querying the appropriate licenses for a speciˉc requirement or checking the license terms and conditions with user requirements.