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Research Summary: This article studies how the logic of firm governance choices varies as a function of the time of adoption of particular sourcing practices. Using data on the diffusion of global business services sourcing as a management practice from early experiments in the 1980s through 2011, we show that the extent to which governance choices are affected by process commoditization, availability of external service capabilities, and past governance choices depends on whether firms are early or late adopters. Findings inform research on governance choice dynamics specifically in highly diverse and evolving firm populations. Managerial Summary: This article considers how firms have chosen delivery models in global services sourcing decisions over time. Based on comprehensive data, we make two major observations. First, we find that firms that began with global services sourcing early, invested mainly in their internal sourcing capacity, while outsourcing only simple tasks to external providers, whereas firms that started later invested more in their capability to outsource various services to increasingly sophisticated suppliers. Second, we find that initial investments in internal or external sourcing capabilities have a strong effect on future choices of delivery models. This explains why, even today, firms vary greatly in how they implement global sourcing decisions, and it suggests that newcomers should learn from their own peer group rather than from highly experienced firms.  相似文献   
73.
In this paper a multiple-output cost function framework is proposed to construct national feed balances or feed utilisation matrices (FUMs). The framework is applied to the Belgian compound feed industry. For estimation purposes a Symmetrie Generalised McFadden (SGM) cost function is selected. The cost function is estimated using readily available time-series data for the period 1962–88. Unlike previous studies based on duality theory, this study exploits the properties of nonjointness in animal feed production to establish a complete FUM. The allocation of feed ingredients among different livestock categories as well as the composition of various compound feeds are identified. Also own- and cross-price elasticities of demand for feed ingredients by type of livestock are reported.  相似文献   
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"This paper examines two aspects of hierarchical urban models: the variations of total urban population and that of the urbanization ratio, in function of the number of hierarchical levels. Both variations are analysed through four categories of models. The complexity of the results suggests two approximations in order to make the analysis more tractable."  相似文献   
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The positive impact of university–industry collaborations on firms' innovative performance is well recognized. However, to date, the existing heterogeneity within university–industry collaboration processes and the sources of value creation underlying the resulting inventions are left underexplored. As a result, our understanding as to why some of the joint inventions resulting from such collaborations turn out to present a more fertile source of follow-on developments and value for the collaborating firm than others is limited. The present paper sheds light on this question through the application of a knowledge recombination perspective. Hence, we open the black box of innovation and put a spotlight on the knowledge components that make up the joint inventions resulting from university–industry collaborations. We evaluate how the nature—scientific versus technological—and origins—internal versus external to the collaborating partners—of these knowledge components relate to the inventive impact of the partners' joint invention. Examining a sample of 9102 USPTO co-patents, joint inventions created through university–industry collaborations are shown to be most fertile as a source of firm follow-on inventions when they are the result of a recombination process that includes technological knowledge components stemming from both collaborating partners. This effect is most pronounced when the partners' technological knowledge contributions are moderately similar. In contrast, when the joint technology development takes place in a technology domain that is novel to the firm, the resulting joint inventions are most fertile as a source of firm follow-on inventions when the university contributes through the input of technological knowledge components situated in exactly this technology domain that is novel to the firm. Remarkably, no evidence for such direct effects is found regarding the partners' scientific contributions. Together, these findings provide important insights for firms who intend to spur their internal technology development through collaboration with a university partner.  相似文献   
78.
Tourism travel under climate change mitigation constraints   总被引:1,自引:0,他引:1  
The paper first describes an inventory for 2005 giving the tourism related CO2 emission caused by global tourism, and presents a 30-year projection and a 45-year simulation. The study found that tourists cause 4.4% of global CO2 emissions. Also these emissions are projected to grow at an average rate of 3.2% per year up to 2035. This increase is problematic as globally a reduction of emissions by 3–6% is required to avoid ‘dangerous’ climate change. Using contemporary scenario techniques it appeared difficult to find a future tourist travel system consistent with CO2 emission reductions of up to 70% by 2050 with respect to 2005. Based on the model underlying the 30-year projection, 70 scenarios are presented in a ‘landscape’ graph exploring the effect of opportunities to reduce the emissions, but this attempt did not reach the large reductions envisaged. We therefore explored automated scenario generation as a way to define backcasting scenarios that both reach the emission reduction target and retain the highest possible economic value for the sector. The main contributions made by this study are (1) in comparing the value of different ways to approach a (desired) future and (2) giving insight into the kind of structural changes required within tourism and tourism transport in case very strong emission reductions are required. Finally the model showed signs of ‘complex’ behaviour.  相似文献   
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This paper illustrates the potential of a decision-support system developed for Belgium by a consortium of universities and a private firm, in the framework of a public call made by the Ministry of the Interior. The system is designed to provide the Belgian emergency management administration with a complete decision-aid tool for the location of fire stations. The originality of the project is that it includes a risk-modeling approach developed at a national scale. This analysis involves a multiscale GIS that includes a thorough representation of the physical, human and economic spatial realities, a risk-modeling approach, an adequate optimal location and allocation model (taking into account both queuing and staffing problems). The final result is an interactive operational tool for defining locations, equipment allocations, staffing, response times, the cost/efficiency trade-off, etc. This flexible tool can be used in an assessment as well as a prospective context. It has been used to draw a national reorganization plan for fire stations that started being implemented in 2010.  相似文献   
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