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51.
Fosca Mariani Zini Nadine Vanwelkenhuyzen Philippe Drieux Alain Tallon Françoise Waquet Laurence Devillairs Geneviève Brykman Patrick Gautier Dalché Mai Lequan Emmanuel Poulle Bruno Neveu Mikhaïl Xifaras Claude Blanckaert Jean-Yves Goffi 《Revue de synthèse / Centre international de synthèse》1998,119(1):131-166
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This article examines the procurement practices of Canada s three largest electric power utilities, Ontario Hydro, Hydro Quebec, and B.C. Hydro in terms of their impact on the technological development of the electrical power equipment industry in Canada. The theoretical underpinnings of this analysis are that under certain economic, technical and institutional conditions, procurement as managed by large publicly owned corporations with a high level of technical capacity can be a powerful instrument of industrial innovation. The paper describes how in the face of weakening market power following the twenty-year expansion phase in the industry (1960–80) and global restructuring among electrical power equipment suppliers, the three utilities have been forced to reassess conflicting commercial and technological objectives. The authors point to Hydro Quebec's signing of a recent series of strategic production agreements with key suppliers as an example of a new approach lo procurement through concentrated use of limited market power in critical product areas. The paper concludes that the distribution of risks involved in technology development between buyers and sellers is dependent on market structures. Secondly, the nature of these client-supplier interactions in management of risk will reflect the internal coherence of an organization's commercial and technological strategies. 相似文献
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For decades zooarchaeological studies mainly focused on teeth age profiles to derive central hypotheses concerning human subsistence during the Pleistocene. Behavior was often related to hunting and/or scavenging strategies according to two models: attritional versus catastrophic. However, few studies have estimated basic demographic parameters using standard methods of population ecology, which are necessary for a more confident interpretation of animal paleopopulation structures. Thanks to a remarkably rich fossil bone assemblage from the Upper Pleistocene cave of Geula (Mount Carmel, Israel), in this paper we perform a paleodemographic analysis of Hystrix refossa, Gervais 1852 (Mammalia, Rodentia). We first consider phylogenetic and morphometric dental criteria for the comparison of Pleistocene porcupine species, followed by an examination of taphonomic conditions of the bone assemblage. We focus strongly on the age structure of the fossil population, presenting a new methodological approach that combines life tables and Leslie matrix models – one of the best-known methods in population ecology for assessing population growth and age distribution. We detail demographic parameters derived from cross-sectional life tables and past trends in the porcupine population at Geula Cave using simple matrix projection model. Finally, we were able to perform an elasticity analysis to identify which demographic component was potentially the most critical for influencing growth. We show that the population of H. refossa did not decline or shrink but was stable. Our results permit us to characterize Geula Cave as a natural shelter for porcupines, with limited evidence to scavenging and hunting by either hyenas or humans. 相似文献
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We study a skeletal sample digested by Iberian wolf (Canis lupus signatus) in order to finding diagnostic features of digestion caused by this agent. The remains were taken from scats collected in different natural areas in the northwestern Iberian Peninsula. We tested different methods to recover the remains with the goal of not produce biases, and we evaluated the most appropriate methods. The results were compared with those reported by other authors who have also worked with samples digested by wolves. Bias during the procurement of the skeletal assemblages seems to be a significant cause of the differences observed between the samples. We found that it was necessary to fully recover all remains and individually analyze all modifications, even in small-sized remains. Taphonomic characterization was performed by analyzing physical and biochemical modifications. We believe that these results may be useful in the study of archaeological and paleontological assemblages. 相似文献
57.
Linda C. Prinsloo Aurélie Tournié Philippe Colomban Céline Paris Stephen T. Bassett 《Journal of archaeological science》2013
Vibrational spectroscopy (Raman and FTIR) has played an important role in identifying pigments, substrata and deterioration products in rock art studies worldwide: in the laboratory and on-site. However, the detection of organic binders and carrying agents has so far been scarce and the quality of many spectra recorded on-site inadequate. In this study, possible pigments (charcoal, ochre, raptor faeces, thermally treated ostrich egg shell, etc.), binders (fat, egg, blood) and carrying agents (saliva, gall, egg, water) were selected based on artistic considerations and analysed with FTIR and Raman (514.6 and 785 nm excitation, both available in mobile instruments) spectroscopy in order to determine usable marker bands for each ingredient. The resultant marker bands were then used to analyse five ten year old San replica paints. It was found that FTIR spectroscopy is very efficient to identify organic compounds as there is no fluorescence but the broadness of the bands inhibits the exact assignment of many ingredients. A high fluorescence background experienced for many natural products prevented the recording of Raman spectra for all ingredients, in many instances though the sharp peaks usually associated with Raman spectra make identification easier than with FTIR spectroscopy. Most of the ingredients in the paints could be identified, but it is clear that better results are obtained when more that one technique is used. 相似文献
58.
Philippe Le Billon Manoj Suji Jeevan Baniya Bina Limbu Dinesh Paudel Katharine Rankin Nabin Rawal Sara Shneiderman 《Development and change》2020,51(4):939-969
The political economy literature on post-disaster reconstruction tends to contrast ‘disaster capitalism’ narratives denouncing the predatory character of neoliberal rebuilding, and ‘building back better’ policies supporting market-driven reconstruction. This article seeks to provide a more nuanced account, developing the concept of ‘disaster financialization’ through a case study of household-level changes experienced through processes of post-earthquake reconstruction in Nepal. The concept of disaster financialization describes not only the integration of disaster-affected households into the cash-based logic of reconstruction instituted by donors and government authorities, but also the financialization of their lives, social relations and subjectivities. It is a transitive process involving a shift into financialized mechanisms of disaster prevention, adaptation and recovery. Analysing contrasting experiences across three earthquake-affected districts in Nepal, this study proposes disaster financialization as an integrative term through which to understand the simultaneous acceleration of monetization, the leveraging of cash incentives by donors and government to ‘build back better’, and the flurry of financial transactions associated with reconstruction processes. While some aspects of disaster financialization have had negative social impacts, such as debt-related anxieties and a breakdown of voluntary labour exchanges hurting the most vulnerable, the process has taken on variegated forms, with equally variegated effects, reflecting household characteristics and interactions with financial institutions. 相似文献
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In the course of a major reform wave following the "new public management" as a model, Swiss parliaments at the state and local level have undergone a far-reaching change process. Most of the intellectual and preparatory work was done in specialized parliamentary committees. We found significant differences in the way parliamentary committees in Switzerland organized the specific contexts to change their governance systems, and these differences had a visible impact on the success of the reforms. Our data show that parliamentary committees' process designs were important to their functioning, especially in a change process. A constructive collaboration culture between the parliament and the cabinet was key to successful reforming of these two respective bodies. 相似文献