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基于基本对象模型的组件式成员规划技术研究
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作者 彭春光 刘健 黄柯棣 《系统仿真学报》 CAS CSCD 北大核心 2009年第15期4697-4700,共4页
在遵循FEDEP标准的联邦开发过程中,出现了一种组件式的联邦开发模式。该模式不再以联邦成员为基本单位,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。以构建大规模的分布式仿真系统为背景,对基于基本对象模型的组件式成员规划... 在遵循FEDEP标准的联邦开发过程中,出现了一种组件式的联邦开发模式。该模式不再以联邦成员为基本单位,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。以构建大规模的分布式仿真系统为背景,对基于基本对象模型的组件式成员规划技术进行了研究,提出了三种基于不同指标的成员规划方法。结果表明,使用该方法能够在仿真过程中将各组件快速组装成仿真成员,并且合理规划到各仿真节点上,从而实现仿真系统的快速构建。 展开更多
关键词 基本对象模型 仿真模型组件 成员规划 联邦成员 联邦
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分布仿真实验管理系统中实验规划方法研究 被引量:5
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作者 段伟 彭春光 +2 位作者 张柯 邱晓刚 陈彬 《系统仿真学报》 EI CAS CSCD 北大核心 2008年第24期6631-6635,共5页
分布仿真实验规划针对仿真应用系统的开发和运行过程,对其结构和运行控制进行合理设计,以实现分布仿真应用系统的自动化构建和提高仿真运行效率。首先,分布仿真实验规划定义了仿真过程中的联邦基本信息,例如:联邦名称、FED文件、运行时... 分布仿真实验规划针对仿真应用系统的开发和运行过程,对其结构和运行控制进行合理设计,以实现分布仿真应用系统的自动化构建和提高仿真运行效率。首先,分布仿真实验规划定义了仿真过程中的联邦基本信息,例如:联邦名称、FED文件、运行时间等等。其次,研究了基于实体的成员规划方法,以及仿真任务向仿真节点的分配算法。最后,根据分布仿真实验规划的功能需求,设计实现了分布仿真实验规划工具。分布仿真实验规划工具以联邦成员、想定描述和仿真节点信息为输入,自动规划并生成XML格式的仿真方案文件。方案文件保存了仿真实验规划结果,并作为构建分布仿真应用系统和仿真运行的依据。 展开更多
关键词 分布仿真 实验管理 实验规划 高层体系结构 成员规划 任务分配
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Urban Air Quality Plans and Integrated Assessment Methodologies 被引量:1
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作者 Ana Isabel Miranda Helder Relvas +7 位作者 Enrico Turrini Diogo Lopes Carlos Silveira Joana Ferreira Myriam Lopes Elisa Sa Carlos Borrego Marialuisa Volta 《Journal of Environmental Science and Engineering(B)》 2014年第2期70-78,共9页
The air quality directive (2008/50/EC (of the European Parliament and of the Council of 21 May 2008)) requires European Member States to design appropriate AQPs (air quality plans) for zones and agglomerations w... The air quality directive (2008/50/EC (of the European Parliament and of the Council of 21 May 2008)) requires European Member States to design appropriate AQPs (air quality plans) for zones and agglomerations where the air quality does not comply with the limit values and to assess possible emission reduction measures to decrease concentration levels. The Portuguese agglomeration of Porto Litoral is one of the several European Union urban areas that had to develop and implement AQPs to reduce particulate matter (PM10). The AQPs were initially designed based on a scenario approach and using an air quality model, which was applied over the study region for the reference situation with the current PM10 emissions, and for a reduction scenario with PM10 emissions re-estimated considering the implementation of abatement measures. Aiming to cost-efficiently optimize Porto Litoral PM10 abatement measures, the assessment procedure was repeated using an optimization approach based on the RIAT + (regional integrated assessment tool +). Porto Litoral urban area's technical and non-technical measures were characterized (including associated costs) and, through the application of the air quality model to 20 emissions abatement scenarios, S-R (source-receptor) relationships were created. This paper comparatively describes the air quality plans designed to improve PM10 levels in the Porto Litoral agglomeration based on both the scenario analysis and the optimization approach. 展开更多
关键词 Urban air quality air quality plans integrated assessment methodologies modelling tools
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Somalis Diasporic Transnational Life--From Placelessness to Placeness in Finnish Urban Environment
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作者 Johanna Malmi 《Sociology Study》 2012年第4期301-314,共14页
About 1.S million Somalis live in the diaspora and first Somali asylum seekers came to Finland in 1990. Then they were the first large refugee group in Finland. They have got integration problems with Finnish society ... About 1.S million Somalis live in the diaspora and first Somali asylum seekers came to Finland in 1990. Then they were the first large refugee group in Finland. They have got integration problems with Finnish society and from that perspective the author started to doubt that whether migrants adopted the same kinds of relationship with the local places and which kind of influence it would have on their integration. The author's aim for this study has been to explore their sense of belonging from transnational family and geographical perspectives. Relph argued that placelessness could be created either by individual itself or urban planning. With the content analyses the author analyzed 50 questions from seven respondents. The questionnaire includes the part of transnational contact keeping among kin members of transnational family, migration and respondents' sense toward urban surrounding where they lives. Emotional ties play a maior role in Finnish Somalis' diasporic life. Emotions intertwine around their life as members of transnational family and toward sense of place. Transnational family affects their perspectives toward western society and urban places. Placelessness is the first step toward integration and positive sense of place. With the integration placelessness turns to placeness. 展开更多
关键词 Somalis transnational family placelessness INTEGRATION
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