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21.
    
In this study, we aim at evaluating the role of path-dependent and past-dependent forces in the historical trajectory of clusters. For that purpose, we study the life cycles of four of the main industrial clusters in the Basque Country (paper-making, electronics and information and communication technology, maritime industries and aeronautics) and analyse the factors that account for the origin, development, maturity and, if so, decline of those clusters, considering factors related to both cluster dynamics and the regional environment. Our analysis shows that the existence of a life cycle does not imply a straightforward growth path. Clusters follow multiple growth patterns in their development. The heterogeneity of growth patterns may be, in some cases, due to different initial conditions. However, despite similar initial conditions and/or resource endowments and opportunities for development, we can observe heterogeneous evolutionary patterns. Clusters react differently to the same external shocks (e.g. international demand, global competition and technological change) and evolve differently according to their capabilities.  相似文献   
22.
    
Combining empirical evidence with Amartya Sen's concept of capabilities, this article argues that the digital divide is not merely a problem of access to ICTs. It is part of a larger developmental problem in which vast sections of the world's population are deprived of the capabilities to use ICTs, acquire information and convert information into useful knowledge. Fieldwork research including sample surveys conducted in rural locations in Kerala and Andhra Pradesh in India shows that these capabilities can only be created through large‐scale complementary interventions in economic and social development.  相似文献   
23.
This paper examines successful policy network (henceforth PN) practices in the Basque Country over an 18-year period, in relation to Cluster Associations, Quality Promotion and Local Agenda 21 Promotion. Basing our work on the Basque experience and on previous multi-disciplinary knowledge regarding learning processes, networking management and marketing, we contribute new insights that help to understand how PN management evolves. The need to analyse PN from an evolutionary perspective has been pinpointed by the various traditions of network research as one of the main gaps in the study of networking. Our research shows that expertise in PN management is generated through a long, performance-oriented dilemma-solving process that takes place in time and space. The first experiences provide initial knowledge and absorptive capacity, both of which improve through new and diverse experiences of increasing complexity. Step by step, a quantity of tacit and codified knowledge is created and shared, mainly through face-to-face contact, within the territory. Finally, the knowledge achieved is substantially similar to the normative knowledge that, though sparse, can be found in various networking literatures and needs to be brought together. But we also suggest that more emphasis on PN marketing is needed.  相似文献   
24.

Vie Scientifique

Symposium international Galileo 2001 Tenerife, February 19–23, 2001  相似文献   
25.
    
A 50‐ to 65‐year‐old female, from the Roman period Kellis 2 (K2) cemetery in the Dakhleh Oasis, Egypt, shows macroscopic and imaging evidence of a vertebral haemangioma (VH). The centrum of the 12th thoracic vertebrae has an expanded and lysed cortex and thickened vertical trabeculae—producing the pathognomonic “corduroy” radiological sign. Additionally, the first lumbar vertebrae shows early changes of haemangioma that are not obvious macroscopically but clear on the X‐ray and the microcomputed tomography (μCT) imaging. VHs are relatively common (>10%) benign vascular tumours in extant adult populations. Its rarity in antiquity can be explained by the fact that in most archaeological samples, haemangiomas would not be macroscopically visible because the destruction and expansion of the cortex only occurs in advanced cases (usually in older individuals). In archaeological populations, older individuals (60+), though present, are much less common, and hence, the prevalence of VHs would be much lower than that reported in modern clinical samples. We posit that in order to determine the approximate prevalence of VHs in antiquity, a systematic radiographic study of an entire adult archaeological population sample is required. A caveat to this problem is that radiological diagnosis is difficult unless at least one third of the centrum is involved, and the classic radiological signs are manifested. A review of case studies suggest that X‐rays from T4 to L4 would include ~95% of the potential cases of VHs, and if a portable μCT unit can be developed, the natural history of VHs will be better established.  相似文献   
26.
The issue of reallocating population figures from a set of geographical units onto another set of units has received a great deal of attention in the literature. Every other day, a new algorithm is proposed, claiming that it outperforms competitor procedures. Unfortunately, when the new (usually more complex) methods are applied to a new data set, the improvements attained are sometimes just marginal. The relationship cost‐effectiveness of the solutions is case‐dependent. The majority of studies have focused on large areas with heterogeneous population density distributions. The general conclusion is that as a rule more sophisticated methods are worth the effort. It could be argued, however, that when we work with a variable that varies gradually in relatively homogeneous small units, simple areal weighting methods could be sufficient and that ancillary variables would produce marginal improvements. For the case of reallocating census data, our study shows that, even under the above conditions, the most sophisticated approaches clearly yield the better results. After testing fourteen methods in Barcelona (Spain), the best results are attained using as ancillary variable the total dwelling area in each residential building. Our study shows the 3‐D methods as generating the better outcomes followed by multiclass 2‐D procedures, binary 2‐D approaches and areal weighting and 1‐D algorithms. The point‐based interpolation procedures are by far the ones producing the worst estimates.  相似文献   
27.
The High Court of Australia’s decision in Monis v The Queen and Droudis v The Queen concerned whether Monis and Droudis’s use of the postal service to send offensive letters warranted the constitutional protection of the implied freedom of political communication. The outcome was a split decision: the three men judges found for Monis and Droudis, and the three women judges against. We argue that this decision was significant because it draws attention to the law’s key role in framing political understandings of the nature of and demarcation between public and private spheres. The Court’s interpretations concerning how we should understand and apply the foundational relationships binding the state, the individual, and the public and private spheres in the twenty-first century highlights the gendered complexities of the politics shaping those relationships. It also highlights the gendered privileging of what sort of speech should be exempted from the law’s immediate purview, and in so doing, further reveals the masculinism upon which Australia’s constitutional framework rests.  相似文献   
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29.
The study of material culture generated by military engagements has created an emergent sub-discipline of archaeological studies centred on battlefields. This approach has developed a particular and sophisticated methodology that is able to deal with the fact that archaeologists will often not find either structures or a useful stratigraphical record on the site, as the material remains of the battle will basically be metallic objects carried by combatants. It is therefore rather complicated not only to test hypotheses about battle events based on archaeological data, but also to validate the methodology used. Here we propose the use of agent-based models to explore these issues in the case of eighteenth-century battlefield archaeology. The simulation is divided into four different steps. Firstly, a battle is simulated in order to generate realistic virtual archaeological remains left by an engagement between two armies of this era. We then simulate the loss of information that the passing of time produces in the battlefield. The third step involves simulating the archaeological survey, enabling us to explore different survey strategies and the impact on the interpretation of the event itself. Finally, we design a confidence index in order to compare the results of the different virtual excavations using spatial analysis and statistics. The results show that the methodology is fully functional in terms of understanding a battle, and it allows us to suggest new strategies to improve fieldwork and to develop new ways of exploring these particular archaeological sites. It is concluded that the described approach illustrates how simulation can be used to explore methodological issues of archaeological science.  相似文献   
30.
Financialization is a major trend in Western economies. This paper shows, on the one hand, how it changes the management criteria and, on the other hand, the limits to financialization in the property sector. Between 1992 and 2004, about 15% of Swiss pension funds' wealth was invested in property. As far as their investment policy is concerned, pension funds have two choices. First, they can directly own, and have management responsibility for, the properties in their portfolios. Alternatively, they can buy shares in mainly Zurich-based investment vehicles. In the first case, pension funds require staff with the relevant expertise along with the knowledge of property markets. Investments have a regional focus and are assessed internally by the funds. In the second case, pension funds are merely investors and investment appraisals and comparisons are made on the basis of market criteria such as yield, diversification in relation to risk and liquidity. In this case, property investments focus solely on the country's main urban areas.  相似文献   
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