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31.
基于图像的三维重建属于计算机视觉中的一个重要的研究方向,从提出到现在已有十多年的历史。文章首先对三维重建技术做了详细阐述,并着重从计算机图形学的研究角度对基于图像建模技术进行了综述,介绍了具有代表性的基于图像建模的方法及其最新研究进展,给出了这些方法的基本原理,并对这些方法进行分析比较,最后对基于图像建模技术的未来研究给出了一些建议和应解决的问题。  相似文献   
32.
This paper reports on a study of the networking and linkage practices of technology and non-technology firms within the Ottawa cluster. The work seeks to understand how and why particular patterns of networks and linkages evolve and it examines empirically the usage and value of networks and linkages. Previous work argues that technology firms need to be relatively more adept at developing external relationships in order to be successful than do non-technology based companies. This work, however, finds that technology firms exhibit fewer linkages than non-technology based companies do within the Ottawa cluster. The research suggests that the vitality of the Ottawa cluster could be further enhanced through the promotion of additional networking and linkages among regional firms. A key implication for management practice is that CEOs of technology-based firms should work towards establishing and maintaining additional valued relationships.  相似文献   
33.
Drawing on extensive academic research concerning clusters and networks, this paper seeks to create a framework capable of reviewing and monitoring different aspects of clusters and networks on an ongoing basis. The nine-element framework allows evaluation of the structures and processes for the eight basic cluster types identified from the literature. The use of this framework as a complimentary tool to the Multi-sectoral Qualitative Analysis (MSQA) methodology is then demonstrated using three examples (the construction, hardwood timber and higher education sectors). The data was gathered from three sets of key stakeholders (government, institutions and industry) provided from a recent study funded by the Welsh Assembly Government's Small Grants Research Programme. These cases illustrate the use of the framework in helping to generate the initial information necessary for subsequent cluster development policy (within overall regional economic development) by government to occur. The framework provides tools for reviewing and monitoring individual sectors. Information captured within the framework can also help in ameliorating problems in sectors likely to decline further. The need for further development research is also identified. Specifically at the level of the firm and network, there is a need to generate a more detailed framework of analysis of factors that contribute to successful processes of network management, learning and innovation, from which more detailed policy could be enacted in future.  相似文献   
34.
In this paper we analyse the relationship between governance and learning in clusters and networks. In particular, we see these two key elements as interdependent, suggesting that, under particular circumstances, such interdependence may drive clusters and networks towards a dynamic development trajectory. A pure ‘governance perspective’ makes the development of any locality dependent on the system of powers which exists within the locality or across the global value chain. In parallel, a pure ‘competence-based approach’ focuses mainly on the capabilities of actors to learn and undertake activities. In contrast, we open the prospects for an interdependent relation that may change the actual competences of actors as well as the governance settings and dynamics in networks and clusters. When supported by public policies, the learning process may have the potential to modify the governance environment. Simultaneously, the learning process is intrinsically influenced by economic power, which may seriously affect the development prospects of clusters and networks. This is why an intertwined consideration of both aspects is necessary to promote specific approaches to learning and to design appropriate policies. In this paper we offer two preliminary case studies to clarify some of these dynamics: the first taken from the computers cluster in Costa Rica and the second from an Italian bio-pharmaceutical firm and its production network. The first case study refers to the software cluster that was created from scratch in Costa Rica thanks to an enlightened government policy in coordination with new local enterprises and an important foreign direct investor; while the second reflects on the ability of an individual company to create a network of relationships with large transnational companies in order to acquire new competences without falling into a subordinate position with respect to its larger partners.  相似文献   
35.
Abstract

Within public administration and policy sciences the concept of policy networks nowadays is well accepted. Not much attention has been paid so far to strategies aimed at institutional design. Therefore, in this article, we develop a conceptual framework to study institutional design more thoroughly. We do this by specifying the nature and variety of institutional rules that guide the behaviour of actors within networks. Given this categorization of rules, we identify possible strategies to change network rules. Next, we focus on the strategic context of attempts to influence the nature of institutional rules: the process of institutional design. We conclude with suggestions to apply the conceptual framework to empirical research into the forms, impacts and implications of attempts to change the institutional features of policy networks.  相似文献   
36.
Abstract

Collaborative networks in the public and non-profit sector face challenges that are typical for their institutional context. The typical characteristics that might impede the functioning of networks and, in particular, the development of trust and network effectiveness, are related to type of instigation, network flexibility, and power in the form of unbalanced influence and the vertical character of networks. In a sample of 52 networks, the effects of network flexibility, mandatory and vertical networks, and influence on trust and network effectiveness were studied. Findings indicated that particularly flexibility in networks was important and that cognition-based trust played a central role in obtaining effective networks.  相似文献   
37.
项目进度管理的研究现状及其展望   总被引:8,自引:0,他引:8  
本文对项目进度管理的研究现状进行了总结,介绍了它的基本概念及其常用的几种计划控制技术,总结了项目进度管理的研究现状,主要分为三个方面:时间-费用(成本)优化、资源约束下的项目进度计划、作业活动时间的反映及其计划技术创新,指出了管理理念、管理方法、先进应用方式的提升是项目进度管理的研究方向。  相似文献   
38.
Drawing on a qualitative case study of 51 organizational self-initiated expatriates (OSIEs) in a professional services firm, this article investigates the role of networks during expatriation and, specifically, in the development of learning that is beneficial to both the individual expatriate and the global operations of the firm. First, we investigate the extent to which individual motivations to engage in OSIE impact on the development of networks. Second, we investigate individual's experiences of network development. Third, we investigate individual perceptions of the benefits of networks for both organizations and individual actors. The paper will report that professionals initiating their own expatriation develop continually expanding and composite networks such that mobility and networks evolve in a seemingly symbiotic relationship. In doing so, it contributes to our understanding of the role of agency in network development and extends our understanding of organizational self-initiated expatriation as a relatively under-researched phenomenon.  相似文献   
39.
The purpose of this research is to build a conceptual foundation that examines network effects on the diffusion of environmental business practices (EBP) among suppliers. This research extends a network perspective to adoption of an environmental business practice across a large network of suppliers. The context of EBP is used to better understand adoption of a complex business practice, with perceived costs that are often greater than the perceived benefit. Variation in the level of structural and relationship embeddedness affect network diffusion of environmental business practices differently. Increased levels of structural and relational embeddedness are proposed to be positively associated with diffusion of EBP. From a practical standpoint, firms that leverage embeddedness may facilitate higher diffusion and adoption of environmental business practices. This facilitation may lead network actors to engage in EBP, and leverage benefits that may stem from these practices. This research introduces the concept of embeddedness to the environmental supply chain literature. Practicing managers can use the findings in this research to better position themselves within a network to diffuse EBP. This research also helps managers understand how supply chain members that are weakly connected to the primary network are important for introducing new ideas and innovations.  相似文献   
40.
This paper contributes to our understanding of the role of temporary workers in learning for innovation in network contexts. The strategy literature advocates that the knowledge and talent of workers is vital to competitive success yet at the same time temporary workers are becoming more prevalent, making relationships with workers more ephemeral. These shifting competitive and employment contexts make insights into learning from, and with, contractual nomads paramount. The setting is the UK television industry, where such workers are dominant. Internationally, creative industries are a prime site of networks where temporary workers are brought together for specific projects. In the television industry, a range of knowledge attachment employee relationships have been developed by firms to ‘contain’ and sustain worker contributions in terms of knowledge and talent. These relationships are identified as freelance, regular contract, golden handcuffs and invest in knowledge firm. This paper highlights the learning implications both positive and negative arising from these different ways of relating to temporary workers thereby extending our understanding of employee relationships built on mutuality.  相似文献   
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