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A Task-oriented Modular and Agent-based Collaborative Design Mechanism for Distributed Product Development 被引量:4
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作者 LIU Jinfei CHEN Ming +1 位作者 WANG Lei WU Qidi 《Chinese Journal of Mechanical Engineering》 SCIE EI CAS CSCD 2014年第3期641-654,共14页
The rapid expansion of enterprises makes product collaborative design (PCD) a critical issue under the distributed heterogeneous environment, but as the collaborative task of large-scale network becomes more complic... The rapid expansion of enterprises makes product collaborative design (PCD) a critical issue under the distributed heterogeneous environment, but as the collaborative task of large-scale network becomes more complicated, neither unified task decomposition and allocation methodology nor Agent-based network management platform can satisfy the increasing demands. In this paper, to meet requirements of PCD for distributed product development, a collaborative design mechanism based on the thought of modularity and the Agent technology is presented. First, the top-down 4-tier process model based on task-oriented modular and Agent is constructed for PCD after analyzing the mapping relationships between requirements and functions in the collaborative design. Second, on basis of sub-task decomposition for PCD based on a mixed method, the mathematic model of task-oriented modular based on multi-objective optimization is established to maximize the module cohesion degree and minimize the module coupling degree, while considering the module executable degree as a restriction. The mathematic model is optimized and simulated by the modified PSO, and the decomposed modules are obtained. Finally, the Agent structure model for collaborative design is put forward, and the optimism matching Agents are selected by using similarity algorithm to implement different task-modules by the integrated reasoning and decision-making mechanism with the behavioral model of collaborative design Agents. With the results of experimental studies for automobile collaborative design, the feasibility and efficiency of this methodology of task-oriented modular and Agent-based collaborative design in the distributed heterogeneous environment are verified. On this basis, an integrative automobile collaborative R&D platform is developed. This research provides an effective platform for automobile manufacturing enterprises to achieve PCD, and helps to promote product numeralization collaborative R&D and management development. 展开更多
关键词 collaborative design task-oriented modular MULTI-AGENT collaboration mechanism collaborative platform
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Proactive Caching at the Wireless Edge:A Novel Predictive User Popularity-Aware Approach
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作者 Yunye Wan Peng Chen +8 位作者 Yunni Xia Yong Ma Dongge Zhu Xu Wang Hui Liu Weiling Li Xianhua Niu Lei Xu Yumin Dong 《Computer Modeling in Engineering & Sciences》 SCIE EI 2024年第8期1997-2017,共21页
Mobile Edge Computing(MEC)is a promising technology that provides on-demand computing and efficient storage services as close to end users as possible.In an MEC environment,servers are deployed closer to mobile termin... Mobile Edge Computing(MEC)is a promising technology that provides on-demand computing and efficient storage services as close to end users as possible.In an MEC environment,servers are deployed closer to mobile terminals to exploit storage infrastructure,improve content delivery efficiency,and enhance user experience.However,due to the limited capacity of edge servers,it remains a significant challenge to meet the changing,time-varying,and customized needs for highly diversified content of users.Recently,techniques for caching content at the edge are becoming popular for addressing the above challenges.It is capable of filling the communication gap between the users and content providers while relieving pressure on remote cloud servers.However,existing static caching strategies are still inefficient in handling the dynamics of the time-varying popularity of content and meeting users’demands for highly diversified entity data.To address this challenge,we introduce a novel method for content caching over MEC,i.e.,PRIME.It synthesizes a content popularity prediction model,which takes users’stay time and their request traces as inputs,and a deep reinforcement learning model for yielding dynamic caching schedules.Experimental results demonstrate that PRIME,when tested upon the MovieLens 1M dataset for user request patterns and the Shanghai Telecom dataset for user mobility,outperforms its peers in terms of cache hit rates,transmission latency,and system cost. 展开更多
关键词 Mobile edge computing content caching system average cost deep reinforcement learning collaborative mechanism
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Design of hydraulic shift mechanism for AMT vehicles based on the collaborative optimization method 被引量:1
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作者 苗成生 刘海鸥 +1 位作者 陈慧岩 胡宇辉 《Journal of Beijing Institute of Technology》 EI CAS 2016年第1期35-41,共7页
Based on multidisciplinary design optimization(MDO),a new design method is put forward for hydraulic shift mechanism of heavy-duty vehicle automated manual transmission(AMT).Taking a shift cylinder for example,the... Based on multidisciplinary design optimization(MDO),a new design method is put forward for hydraulic shift mechanism of heavy-duty vehicle automated manual transmission(AMT).Taking a shift cylinder for example,the collaborative optimization(CO)method for the design problem of a cylinder is devided into one system level design optimization problem and three subsystem level design optimization problems.The system level is an economic model and the subsystem level is mechanics,kinetics,and a reliability model.Application of the multidisciplinary design optimization software iSIGHT modeling and solving,optimal solution of the shifting cylinder CO model is obtained.According to the optimal solution,oil cylinders are machined out and installed on the gearbox of an AMT system for the bench cycle shift test.The results show that the output force and action speed of the optimized mechanism can meet requirements very well.In addition,the optimized mechanism has a better performance compared to the structure of the traditional design method,which indicates that the CO method can optimize the design of hydraulic transmission. 展开更多
关键词 hydraulic shifting mechanism collaborative optimization automated manual transmission
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Failure mechanism of Mesozoic soft rock roadway in Shajihai coal mine and its surrounding rock control 被引量:7
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作者 Yuan Yue Zhu Yongjian +1 位作者 Wang Weijun Yu Weijian 《International Journal of Mining Science and Technology》 SCIE EI 2014年第6期853-858,共6页
In view of the buckling failure caused by large deformation of Mesozoic soft rock roadway in Shajihai mining area, such as serious roof fall, rib spalling, floor heave, etc., based on the detail site investigation,the... In view of the buckling failure caused by large deformation of Mesozoic soft rock roadway in Shajihai mining area, such as serious roof fall, rib spalling, floor heave, etc., based on the detail site investigation,theoretical analysis, mineral composition test, microstructure test, water-physical property test and field experiments were carried out. And we revealed the compound failure mechanism of Mesozoic soft rock roadway in Shajihai mining area, namely the molecule expansion-shear slip of weak structural plane-construction disturbance. On this basis, the coupling support technology whose core is constant resistance with large deformation bolt was proposed. The feature of this supporting technology is that a new type of structural composite material was used, which makes the supporting system not only has the ideal deformation characteristics, but also has high supporting resistance. Thus the fully release of plastic energy within surrounding rock and reasonable control of the thickness of the plastic ring were realized. Then the differential deformation between the surrounding rock and support was eliminated by the secondary coupling support of bolt–mesh–cable, and the bolt with high strength was applied in the base angle to control floor. Eventually the collaborative bearing system of surrounding rock–support was formed. Through field tests the validity and rationality of support was also verified. 展开更多
关键词 Mesozoic soft rock Failure mechanism Constant resistance with large deformationsupport Control measures Collaborative bearing
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中医药适宜技术推广协同治理机制构建研究 被引量:7
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作者 朱卓辉 陈多 +1 位作者 李芬 姚东明 《中国卫生资源》 CSCD 北大核心 2023年第4期431-437,共7页
目的通过构建中医药适宜技术推广协同治理机制,增强群众对中医药适宜技术的接受度,为进一步提升中医药适宜技术推广应用的力度与深度提供参考。方法梳理中医药适宜技术相关政策,运用协同治理理论,从协同驱动主体、制度保障、服务资源3... 目的通过构建中医药适宜技术推广协同治理机制,增强群众对中医药适宜技术的接受度,为进一步提升中医药适宜技术推广应用的力度与深度提供参考。方法梳理中医药适宜技术相关政策,运用协同治理理论,从协同驱动主体、制度保障、服务资源3个维度思考中医药适宜技术推广协同运转机制。结果结合协同驱动主体、制度保障、服务资源3个维度的要素,构建横向联动、纵向同质化执行的中医药适宜技术推广协同治理机制。结论基于协同驱动主体、制度保障、服务资源3个维度构建的中医药适宜技术推广协同治理机制,对于提高中医药适宜技术的普及性、满足基层群众多元化多层次健康需求具有现实意义。 展开更多
关键词 中医药适宜技术appropriate technology of traditional Chinese medicine 协同治理机制collaborative governance mechanism 基层中医药grassroots Chinese medicine 推广promotion
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Frontiers of collaborative intelligence systems 被引量:1
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作者 Maoguo Gong Yajing He +4 位作者 Hao Li Yue Wu Mingyang Zhang Shanfeng Wang Tianshi Luo 《Journal of Information and Intelligence》 2024年第1期14-27,共14页
The development of information technology has propelled technological reform in artificial intelligence(AI).To address the needs of diversified and complex applications,AI has been increasingly trending towards intell... The development of information technology has propelled technological reform in artificial intelligence(AI).To address the needs of diversified and complex applications,AI has been increasingly trending towards intelligent,collaborative,and systematized development across different levels and tasks.Research on intelligent,collaborative and systematized AI can be divided into three levels:micro,meso,and macro.Firstly,the micro-level collaboration is illustrated through the introduction of swarm intelligence collaborative methods related to individuals collaboration and decision variables collaboration.Secondly,the meso-level collaboration is discussed in terms of multi-task collaboration and multi-party collaboration.Thirdly,the macro-level collaboration is primarily in the context of intelligent collaborative systems,such as terrestrial-satellite collaboration,space-air-ground collaboration,space-air-ground-air collaboration,vehicle-road-cloud collaboration and end-edge-cloud collaboration.Finally,this paper provides prospects on the future development of relevant fields from the perspectives of the micro,meso,and macro levels. 展开更多
关键词 Artificial intelligence collaboration mechanism Micro meso and macro collaboration Artificial intelligence mega application
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