虚拟环境平台上的Linux裁剪分析

分析在虚拟环境平台上（虚拟机上）,采用原有的和新的方法来裁减Linux系统,得到的效果和意义。     

虚拟现实在室内设计中的研究

主要探讨了选择虚拟现实系统,建立虚拟现实环境以及虚拟现实系统在实际应用,同时阐述了虚拟现实在未来室内设计的发展趋势。通过该系统让用户仿佛置身于这个设计的虚拟场景中,感受身临其境的效果。     

虚拟现实技术在反恐训练中的研究进展

介绍了虚拟现实技术的国内外研究现状,以及仿真技术与虚拟现实技术结合使用的发展趋势.为了更好地履行反恐使命,适应形势的发展,有必要提高反恐教学训练质量,创新反恐行动教学训练手段.将仿真技术和虚拟现实技术应用于路边炸弹的虚拟及仿真,能使反恐受训者不受时间、空间、经费和器材的限制,利用各种3D虚拟模型任意组装不同起爆方式下的路边炸弹,拓展其想象空间和创新思维,使之对路边炸弹的结构组成、工作原理及爆炸效应等有深刻理解.     

基于改进麻雀搜索算法的服务功能链优化映射算法

为了实现5G网络场景下服务功能链的低成本高效率部署,提出了一种基于改进麻雀搜索算法的服务功能链优化映射算法。在服务功能链映射过程中,采用双层编码方式,将服务请求的组链方案和映射方案进行混合编码,然后使用改进离散麻雀搜索算法进行求解,得到该请求的服务功能链部署方案,并计算其映射权重。当同一时间片内存在多个请求类型时,按照映射权重对所有服务功能链进行排序,优先映射权重高的请求,以此减少延迟开销,提高节点计算资源利用率和链路资源利用率。仿真结果表明,该算法可以有效减少部署开销,提高资源利用率。     

车联网中基于轨迹预测的无人机动态协同优化覆盖算法

针对城市车联网中出现的基站覆盖空洞及局部流量过载等问题,提出了一种基于车辆轨迹预测信息的动态预部署方案。首先,为了训练得到统一的seq2seq-GRU轨迹预测模型,多个携带边缘计算服务器的无人机在分布式联邦学习与区块链的架构下,去除中心聚合节点,采取改进的Raft算法,在每轮训练中根据贡献数据量的大小,选举得到节点来完成参数聚合及模型更新任务。其次,基于模型预测结果,提出了一种改进的虚拟力向导部署算法,通过各虚拟力来引导无人机进行动态地部署以提升车辆的接入率及通信质量。仿真结果表明,提出的训练架构能够加速模型的训练,部署算法在提升车辆接入率的同时提升了车辆与无人机之间的通信质量。     

Personalizing 3D virtual fashion stores: Exploring modularity with a typology of atmospherics based on user input

This research develops a typology of atmospherics that contains user-identified modules and modular options for personalizing 3D virtual fashion stores. A content analysis of 46 focus group discussions (n = 170) was conducted to understand the user’s perspective for personalizing 3D virtual fashion store atmospherics. Based on three atmospheric categories (pathfinding assistant, environment, and the manner of product presentation), 17 modules and 207 modular options were identified for personalizing 3D virtual stores. This research pioneers the development of an atmospherics typology for personalizing 3D virtual shopping environments as a persuasive selling tool in the emerging field of 3D virtual reality (VR) retailing.     

嵌入式虚拟仪器软件可重构设计技术研究

嵌入式虚拟仪器(EVI)软件可重构是指框架和功能的重构;结合面向对象技术和组件技术,系统地阐述了软件可重构模块化设计的原理、软件可重构算法、可重构软件结构框架设计和可重构软件开发方法;通过分析可重构软件的设计原理和设计思路,提出了一套比较详细的可重构软件的开发方法;经工程实践应用,设计方法合理可行,有效提高了嵌入式虚拟仪器软件的开发效率,达到软件复用及重构的目的。     

论虚拟财产的刑法保护

本文从犯罪论的角度分析了网络虚拟财产的法律属性,认为网络虚拟财产具有财产属性,可以作为盗窃罪的犯罪对象,盗窃网络虚拟财产具有社会危害性,应该适用《刑法》进行规制。     

基于TLM2．0的硬件虚拟平台设计

利用OVP（Open Virtual Platform）提供的模型创建基于TLM2．0的硬件虚拟平台,可以为嵌入式软件提供一个快速有效的开发环境,实现软件和硬件的协同设计。提早开发出的软件也可以对系统虚拟平台进行功能验证,分析系统性能,确定系统的最优架构。     

Supporting inconsistent rules in database systems

When a set of rules generates (conflicting) values for a virtual attribute of some tuple, the system must resolve the inconsistency and decide on a unique value that is assigned to that attribute. In most current systems, the conflict is resolved based on criteria that choose one of the rules in the conflicting set and use the value that it generated. There are several applications, however, where inconsistencies of the above form arise, whose semantics demand a different form of resolution. We propose a general framework for the study of the conflict resolution problem, and suggest a variety of resolution criteria, which collectively subsume all previously known solutions. With several new criteria being introduced, the semantics of several applications are captured more accurately than in the past. We discuss how conflict resolution criteria can be specified at the schema or the rule-module level. Finally, we suggest some implementation techniques based on rule indexing, which allow conflicts to be resolved efficiently at compile time, so that at run time only a single rule is processed.An earlier version of this work appeared under the title Conflict Resolution of Rules Assigning Values to Virtual Attributes inProceedings of the 1989 ACM-Sigmod Conference, Portland, OR, June 1989, pp. 205–214.Partially supported by the National Science Foundation under Grant IRI-9157368 (PYI Award) and by grants from DEC, HP, and AT&T.Partially supported by the National Science Foundation under Grant IRI-9057573 (PYI Award), IBM, DEC, and the University of Maryland Institute for Advanced Computer Studies (UMIACS).