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基本对象模型(BOM)在HLA仿真系统中的应用 总被引:4,自引:5,他引:4
为了促进在世界范围政府部门和非政府部门的仿真互操作能力,仿真互操作标准组织(SISO)引进BOM支持和提高仿真组件的重用性。BOM作为一种促进互操作性、重用性和可组合性的实现机制,鼓励灵活、快速、有效地开发和管理模型。通过研究BOM模板规范和体系结构,设计基于BOM的通用HLA仿真框架,实现通过基于BOM的仿真模型组件快速组合和重用,从而构建具有功能可扩展性和规模可控性的多样性联邦成员和联邦,提高分布式仿真系统的重用性和互操作性。 相似文献
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模型互操作技术允许单独开发的仿真模型在一个集成的仿真环境中互操作,是基于HLA标准的分布式仿真系统中的一项关键技术.并行离散事件仿真(PDES)技术也使用对象模型来表示真实世界中的实体,这些实体模型也有互操作和重用的需要.我们在PDES环境KD-PADSE中开发了-种基于对象和事件的模型互操作机制,它使用对象代理技术为PDES系统提供了与HLA中类似的对象模型的"公布"和"定购"操作.并且,我们对该机制进行了优化以支持类集群环境的PDES运行.初步性能实验显示,在集群环境中,优化后的DDM性能比未优化前最高可以提高12倍. 相似文献
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复杂系统仿真模型的互操作和可重用性是仿真技术研究的热点和难点之一,主流仿真技术高层体系结构由于联邦对象模型以及RII 版本的限制也遇到了很大的挑战。面向服务的建模与仿真技术为问题的解决提供了有效的途径,并已逐渐成为系统仿真研究领域的热点。本文结合上述背景,对HLA/面向服务架构(SOA)、DEVS/SOA、MDA/SOA、云仿真/SOA 等主流面向服务的建模与仿真技术进行了系统的论述,针对SOA 存在的时效性等问题,分析了实时SOA 的研究进展情况,并指出基于实时SOA 的建模与仿真技术一个值得关注的研究方向。 相似文献
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基于HLA的仿真系统模型研究 总被引:3,自引:0,他引:3
在基于HLA的仿真系统开发中,设计和建立HLA仿真系统的各种模型是促进仿真互操作和仿真组件重用的关键过程,模型问题是整个HLA联邦开发的核心问题。在提炼了HLA仿真系统建模过程的基础上,提出了改进的基于HLA的仿真系统开发模型体系,并总结了概念模型、对象模型和仿真模型的开发方法和过程,为各模型的快速、规范化开发打下了基础,并能够缩短基于HLA的仿真系统的开发周期,提高建模与仿真的效率。 相似文献
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基于基本对象模型的仿真模型组装器的研究 总被引:5,自引:3,他引:2
在遵循联邦开发运行全过程标准的联邦开发过程中,出现了一种新的联邦开发模式.新的模式不再以联邦成员为单位,而是以仿真模型组件为单位多人协调合作开发所需的联邦.仿真模型组件的组装技术是构建这种仿真应用系统的关键技术之一.仿真模型组件必须通过组装才能形成仿真应用系统,才能实现仿真模型组件的价值.通过组合具有可重用和互操作能力的仿真模型组件来构建一个功能可定制和大小可伸缩的联邦成员,使联邦成员在不同的联邦中仍然保持重用性和互操作性. 相似文献
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Lü Min 《系统工程与电子技术(英文版)》2008,19(3)
To study the uncertain optimization problems on implementation schedule, time-cost trade-off and quality in enterprise resource planning (ERP) implementation, combined with program evaluation and review technique (PERT), some optimization models are proposed, which include the implementation schedule model, the timecost trade-off model, the quality model, and the implementation time-cost-quality synthetic optimization model. A PERT-embedded genetic algorithm (GA) based on stochastic simulation technique is introduced to the optimization models solution. Finally, an example is presented to show that the models and algorithm are reasonable and effective, which can offer a reliable quantitative decision method for ERP implementation. 相似文献
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《系统工程理论与实践》2014,(4)
正August 10-14,2015Beijing,China The International Congress on Industrial and Applied Mathematics(IClAM)is the premier international congress in the field ofapplied mathematics held every four years under the auspices ofthe International Council for Industrial and Applied Mathematics.From August 10 to 14,2015,mathematicians,scientists and entrepreneurs fiom around the world will gather in Beijing,China for the 8th IClAM to be held at 相似文献
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A calculus for services innovation 总被引:1,自引:1,他引:0
Innovation in the services area - especially in the electronic services (e-services) domain - can be systematically developed by first considering the strategic drivers and foci, then the tactical principles and enablers, and finally the operational decision attributes, all of which constitute a process or calculus of services innovation. More specifically, there are four customer drivers (i.e., collaboration, customization, integration and adaptation), three business foci (i.e., creation-focused, solution-focused and competition-focused), six business principles (i.e., reconstruct market boundaries, focus on the big picture not numbers, reach beyond existing demand, get strategic sequence right, overcome organizational hurdles and build execution into strategy), eight technical enablers (i.e., software algorithms, automation, telecommunication, collaboration, standardization, customization, organization, and globalization), and six attributes of decision informatics (i.e., decision-driven, information-based, real-time, continuously-adaptive, customer-centric and computationally-intensive). It should be noted that the four customer drivers are all directed at empowering the individual - that is, at recognizing that the individual can, respectively, contribute in a collaborative situation, receive customized or personalized attention, access an integrated system or process, and obtain adaptive real-time or just-in-time input. The developed process or calculus serves to identify the potential white spaces or blue oceans for innovation. In addition to expanding on current innovations in services and related experiences, white spaces are identified for possible future innovations; they include those that can mitigate the unforeseen consequences or abuses of earlier innovations, safeguard our rights to privacy, protect us from the always-on, interconnected world, provide us with an authoritative search engine, and generate a GDP metric that can adequately measure the growing knowledge economy, 相似文献
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论生物系统中的功能不守恒性 总被引:1,自引:0,他引:1
张知彬 《复杂系统与复杂性科学》2004,1(2):43-51
根据能量守恒定律,能量一次转换所做的总功应等于输入的总能量。但在生物系统中,能量的转换是多次的,其总功之和大于系统输入的总能量,此现象称之为功能不守恒性。能量转换效率越高,功能差别越大。能量通过细胞水平的多次转换,总功可提高至2倍左右。能量通过生态系统水平多次转换,总功可提高至1.4倍左右。通过系统内各子系统能流之和称为序能,反映了系统有序性大小,它取决于系统输入总能量和能量转换效率。根据序能原理,用GDP^2/9(GDP为国内生产总值,Q为能量总输入)反映人类社会功能和效率,要比单纯用GDP更客观。绿色GDP应同时考虑使GDP^2/Q增长最大和使自然生态系统的序能最大。人的经济行为和动物的行为对策也符合序能原理。 相似文献
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This paper is about the Wuli, Shili, Renli (WSR) systems methodology. An important concept within this, Renli, has been developed from Confucian philosophy to clarify to Chinese researchers the necessity of dealing with human relations in systems practice. At present, the only formal means of operationalizing Renli that people are exploring in China is to import from the West methods for organizing debate. However, the concept of Renli suggests that more is needed than methods alone. In particular, facilitation skills are required. It is argued that the development of facilitation skills can be enhanced if researchers can gain both theoretical and practical knowledge of group dynamics, and engage in activities of self-reflection to look at, and alter, their own roles in these dynamics and the wider sociopolitical system. There are therefore three aspects to Renli: the use of systems methods for organizing debate, the acquisition of facilitation skills, and self-reflection geared toward the development of facilitation skills and enhanced critical awareness of the politics of intervention. 相似文献
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李弋 《系统工程理论与实践》2011,(Z2):70-74
随着云计算的发展,新的应用不断涌现,但电子邮件服务依然占有着重要的地位.邮件服务器是一种I/O密集的应用.在云计算时代,越来越多的用户邮件保存在服务器端,邮件在从客户端传输到服务器端之前,邮件或者邮件的部分内容在服务器端可能已经存在.基于这种现象,提出了一种方案,通过引入计算的代价来降低通信量,从而提高邮件服务器的处理能力.对电子邮件的格式和SMTP协议进行了扩充,引入了附件和正文分离传输的模式.在邮件传输时,客户端先计算附件的散列值,并作为正文的一部分传输到服务器端,服务器端再根据散列值来判断附件是否需要传输. 相似文献
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金工工艺的优化设计 总被引:2,自引:0,他引:2
邹庆化 《系统工程理论与实践》1996,10(11):106-112
运用价值工程与运筹工程理论, 在金工工艺单项设计指标优化的基础上, 对其设计指标也进行了全面优化。 相似文献
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为满足卫星有效载荷数据传输系统高速、高可靠性的需求, 提出一种基于L&R(Luise and Reggiannini)算法的高速低复杂度可重构频偏恢复实现方案。为便于算法逻辑架构实现, 对算法的函数功能进行分解及模块化设计; 为减少乘法器资源消耗, 采用复用分解的自相关函数模块; 为提高L&R算法的精度, 对导频段自相关函数进行多段叠加。结果表明, 高速低复杂度可重构频偏恢复实现方案解调性能损失接近为0 dB, 且优化后的算法结构相比于直接结构可减少92.59%的乘法器消耗, 拆分的自相关函数功能模块具有可复用性和重构性。该算法的可工作时钟速率高达370.37 MHz, 在高速接收机中具有极高的应用价值。 相似文献