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Interfacial intermetallic compounds (IMCs) help determine the reliability of soldered joints; thus, it is necessary to understand their formation and evolution. This study focus on Cu-Sn IMCs formed in ultrasonic-assisted soldering (UAS), wherein the formation of IMCs at the Sn/Cu interface is controlled by changing the ultrasonic action time. After being subjected to ultrasonic vibration, the IMCs...
The low-rent housing system is an important complements of the housing provision system in China. But, the development speed of the low-rent housing system is limited for a variety of factors in the past decade. Compared to the huge demand of the low rent house, only a small number was benefited from this policy. And financing is the key problem of low-rent houses. However, the financing channel of...
The concept of virtual enterprise capability is proposed based on the theory of virtual enterprise and enterprise capability. Virtual enterprise capability depends on project, so it is temporary, integrated and complex capability. The system of virtual enterprise capability is presented which is composed of project, organization, communication, process and environment. Virtual enterprise capability...
Public participation is necessary for democratic and scientific public project decision. E-government network provides technical feasibility to the efficient and low cost public participation. In this paper, the information flow covering whole process of public project is analyzed under E-government environment. Meta-synthesis is applied as an effective method to solve the complex problems of public...
Virtual organization is the normality of the organization of large scale engineering project. The concept of virtual organization project management capability (VOPMC) is proposed. The dimension of VOPMC includes process, organization and content. Project management should cope with standard problems, systematic problems and complex problems. The VOPMC has three stratums: standard management capability,...
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