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While interactive learning and inter-organizational relations are the fundamental building blocks in regional innovation system (RIS) theory, the framework is rarely related to investigations of regional knowledge network structures, because in RIS literature relational structures and interaction networks are discussed in a rather fuzzy and generic manner, with the “network term” often being used rather metaphorically. This paper contributes to the literature by discussing theoretical arguments about interactions and knowledge exchange relations in the RIS literature from the perspective of social network analysis. More precise, it links network-theoretical concepts and insights to the well-known classification of RIS types by Cooke [(2004) Introduction: Regional innovation systems – an evolutionary approach, in: P. Cooke, M. Heidenreich & H.-J. Braczyk (Eds) Regional Innovation Systems: The Role of Governances in a Globalized World, 2nd ed., pp. 1–18 (London: UCL Press)]. We thereby exemplarily show how the RIS literature and the literature on regional knowledge networks can benefit from considering insights of the respective other.  相似文献   
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Transport infrastructure is considered one of the main policy instruments to achieve the cohesion goal, although the inclusion of cohesion effects in assessment methodologies is scarce and uneven. Although most cohesion studies are constrained to the analysis of regional disparities in economic indicators, this approach can be broadened to include other regional performance indicators. One of these indicators could be accessibility measures, from the point of view that accessibility, representing a competitive advantage of locations, constitutes a “desirable good” closely related to the welfare of each region. This paper suggests using changes in the spatial distribution of accessibility as a proxy to assess regional cohesion effects of transport infrastructure investments. However, as the conclusions taken depend heavily on the formulation of the accessibility measure, we recommend computing a set of accessibility indicators and analysing their results in a complementary way. The proposed methodology is tested by assessing regional cohesion effects of the large-scale road and rail transport infrastructure investments carried out in Spain in the period 1992–2004. The results obtained show that cohesion has improved for the road mode, while regional disparities have increased for the rail mode. This paper identifies the main factors driving this final cohesion effect and explores the strengths and weaknesses of the different accessibility indicators that were considered. The approach suggested in this paper has the potential to be applied in transport planning processes, and may eventually complement existing strategic assessment methodologies.  相似文献   
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A huge monolithic piece corresponding to the first years of the sixteenth century has been discovered in Mexico City. It represents the earth goddess Tlaltecuhtli. The preservation of such a magnificent piece is imperative. Therefore, the surface has to be characterized and the interaction of consolidants with the rock has to be understood.Some of the consolidation methods are impregnation of the mineral with nopal or silicic acid derivatives. In this work we compare the physico-chemical effects of organic and inorganic consolidants. Original and impregnated samples are characterized with a series of original techniques: X-ray diffraction, nuclear magnetic resonance, nitrogen adsorption and small angle X-ray scattering. Fractal dimension, specific surface area and pore size distribution clearly differentiated the samples. The organic materials, nopal gum or slobber, cover the mineral particles with a smooth layer. The KSE solutions react and lead to microporosity.  相似文献   
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Water management and population issues have always been particularly important in Spain, a country historically characterized by severe environmental constraints on agricultural growth and intense rural depopulation. This paper evaluates whether irrigation projects in Spain over the course of the twentieth century have achieved one of their main objectives, which was to reduce rural population decline. This paper makes two contributions. First, we compare the evolution of population in two of the earliest and most ambitious irrigation projects in Spain, the Riegos del Alto Aragón (Upper Aragon Irrigation System) and the Canal de Aragón y Cataluña (Aragon and Catalonia Canal System), both located in the Ebro basin. Second, the time period of the study spans an entire century. This long-term approach is crucial if we accept that irrigation requires time to consolidate its effects and, therefore, its impact on population may be long delayed. We show that the evolution of population in each of the two projects has been substantially different. We also analyze the factors that have caused or prevented population growth. We argue that financial, economic and environmental limitations have been significant, but also that political and geographical factors have played a major role.  相似文献   
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The objective of this paper is to obtain several poverty reduction effects by using multipliers based on social accounting matrices. Expressions relating them to Foster, Greer and Thorbecke poverty measures were derived, and two simulations were carried out for the Spanish region of Extremadura. In the first, we posited a per capita transfer equivalent to certain social policy instruments already existing in this region. Structural path analysis is also used to determine the paths by which poverty reduction effects are transmitted. In the second, we calculate the minimum government expenditure in transfers needed to reduce the regional poverty indices to the national values. The results confirmed that the main feature of poverty in Extremadura is incidence.  相似文献   
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This article makes a contribution to the study of the role of regional authorities in the process of regional development by analyzing the case of the Valencia region, a Spanish peripheral region whose economic success was historically dependent upon the maintenance of low labour costs in traditional artisan manufacturing activities. This led to an extreme focus on products of poor quality. In order to overcome this situation, Valencian regional authorities have launched an important number of policies that aim at solving two of the most important weaknesses of the regions: the high dependence on a few manufacturing activities, and the lack of a technology policy that could help to enhance the quality of the Valencian products. The analysis of the measures adopted by the regional authorities in the region of Valencia is expected to be of interest for other peripheral regions characterized by a similar situation—i.e. a traditional lack of interest in technology and innovation.  相似文献   
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The agricultural way of life spreads throughout Europe via two main routes: the Danube corridor and the Mediterranean basin. Current archaeological literature describes the arrival to the Western Mediterranean as a rapid process which involves both demic and cultural models, and in this regard, the dispersal movement has been investigated using mathematical models, where the key factors are time and space. In this work, we have created a compilation of all available radiocarbon dates for the whole of Iberia, in order to draw a chronological series of maps to illustrate temporal and spatial patterns in the neolithisation process. The maps were prepared by calculating the calibrated 14C date probability density curves, as a proxy to show the spatial dynamics of the last hunter-gatherers and first farmers. Several scholars have pointed out problems linked with the variability of samples, such as the overrepresentation of some sites, the degree of regional research, the nature of the dated samples and above all the archaeological context, but we are confident that the selected dates, after applying some filters and statistical protocols, constitute a good way to approach settlement spatial patterns in Iberia at the time of the neolithisation process.  相似文献   
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This paper explores the factors determining collective identities in the Basque Country and Catalonia, paying special attention to language and birth as key domains of ethnolinguistic divide. We will also make a comparison to the case of Valencia, a region with a native language that nevertheless has not developed a nationalist movement. We have performed a cluster analysis to compare the differences between collective identities in these regions using data from the survey on National Identity in Spain, and discriminant analysis is used to test the validity of our model. Results show that an ethnolinguistic division, based on parental origin and linguistic skills, defines peripheral identities in the Basque Country and Catalonia, but this singularity cannot be found for Valencia. Finally, our model corroborates the relevance of ethnolinguistic factors in defining collective identities in the Basque and Catalan regions, while the civic factor may be more relevant in Valencia.  相似文献   
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