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61.
62.
智能电网元件引入配电网和市场系统,对电网需求侧管理提出了新的挑战和机遇。智能电网国家实验室LAB+i已经拥有必要的基础设施进行智能电网的案例研究,其中包括电力需求侧管理。介绍了哥伦比亚国立大学的应用案例,在LAB+i平台实施基于3种需求响应技术的自动化管理系统,能够为校区每个建筑找到最佳负荷曲线。 相似文献
63.
This article analyzes an important dimension in which the organization of the projects performed by the same firm can differ: the insourcing or outsourcing of an activity that needs to be undertaken in each of the different projects. Analyzing the variability of a firm's insourcing or outsourcing decision across its projects gives us a better understanding of the firm's decision-making process in terms of the stability of its choices across projects and the main determinants of that variability. This analysis is valuable because a firm that manages multiple projects can benefit from the careful analysis and consideration of the interactions among and the specificities of its projects. Using a comprehensive database of construction firms and projects, we conclude that firms demonstrate variability in their insource or outsource choices across projects and that this variability is explained by factors such as the number of projects simultaneously undertaken, the variability in a project's complexity, and their market power in local markets. These results suggest that the theories explaining firm boundaries in project-based firms should be expanded to include interrelationships between projects and the individual project characteristics that drive differences in insource or outsource choices. 相似文献
64.
In contrast to traditional projects, which are assumed to be fully specified and then executed with little learning anticipated, complex projects cannot be fully specified at the outset and require continuous learning over their life cycles. Nevertheless, the key role of knowledge formation and learning in managing complex projects is under-developed for expanding project capability boundaries to include knowledge uncertainty and indeterminacy. 相似文献
65.
针对目前电动汽车电池组热管理系统存在的不足,提出了利用泡沫铝对锂离子电池组散热的创新模式。建立了电动汽车电池模块的散热模型,验证了利用泡沫铝对电动汽车电池组散热的有效性与可行性,且随着泡沫铝填充长度的增加,电池最高温度下降越多,最大温差先减小后增加。并发现孔隙率对电池的最高温度影响不明显,但孔隙率越小,最大温差越小,即电池间温度越均匀。 相似文献
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67.
该文针对目前高速公路工程试验检测管理工程的现状进行分析,然后以某高速公路工程为例,详细分析如何做好高速公路工程试验检测管理工作。 相似文献
68.
A survey of construction companies' secondary disability management practices was undertaken in the state of Victoria, Australia. The results indicate that formal rehabilitation and return‐to‐work programmes and practices are not adopted in many companies. Smaller construction firms were less likely to have adopted formal programmes or practices than medium‐to‐large firms. In particular, construction companies reported difficulties in the provision of suitable alternate or light duties for workers returning to work following an injury. Most companies regarded disability management practices to have increased operating costs while yielding little or no benefit in terms of reducing lost workdays. Strategies to overcome some of these impediments to rehabilitation and return‐to‐work in construction are recommended. 相似文献
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70.
John Kelly 《Construction Management & Economics》2013,31(4):435-442
Value management is a project‐focused process that makes explicit and appraises the functional benefits of a product, process or service consistent with a value system determined by the client. The value system of the client necessarily requires a method for value setting using harder performance variables than the commonly described facets of time, cost and quality. Current value theory is critically appraised in the context of current value management practice. The research proposition is that the constituent parts of time, cost and quality can be made overt enabling a client to express satisfaction in terms of a finite number of variables enabling the explicit statement of client value within a value management workshop. An action research study into the discovery of the component parts of the client's value system at the early stages of construction projects concludes that the variables are the nine non‐correlated, high order, discretionary performance variables of capital expenditure, operational expenditure, time, esteem, environment, exchange, politics/community, flexibility and comfort. 相似文献