全文获取类型
收费全文 | 558篇 |
免费 | 53篇 |
出版年
2024年 | 6篇 |
2023年 | 16篇 |
2022年 | 6篇 |
2021年 | 5篇 |
2020年 | 16篇 |
2019年 | 23篇 |
2018年 | 76篇 |
2017年 | 55篇 |
2016年 | 57篇 |
2015年 | 37篇 |
2014年 | 38篇 |
2013年 | 111篇 |
2012年 | 24篇 |
2011年 | 18篇 |
2010年 | 17篇 |
2009年 | 13篇 |
2008年 | 15篇 |
2007年 | 7篇 |
2006年 | 1篇 |
2005年 | 6篇 |
2004年 | 4篇 |
2003年 | 5篇 |
2002年 | 9篇 |
2001年 | 6篇 |
2000年 | 5篇 |
1999年 | 3篇 |
1998年 | 1篇 |
1997年 | 2篇 |
1996年 | 6篇 |
1995年 | 2篇 |
1994年 | 2篇 |
1993年 | 3篇 |
1992年 | 1篇 |
1989年 | 3篇 |
1988年 | 1篇 |
1985年 | 4篇 |
1984年 | 2篇 |
1983年 | 1篇 |
1982年 | 1篇 |
1981年 | 1篇 |
1975年 | 1篇 |
1973年 | 1篇 |
排序方式: 共有611条查询结果,搜索用时 31 毫秒
61.
The shift from the linear to the innovation system-based approach has resulted in the emergence of differentiated regional innovation policy. However, certain common presumptions bind these location-specific policies together. The set of information that is used to design these policies and the set of information excluded are fairly similar. The theoretical sections of this paper provide a critical review on the informational basis of regional innovation policy by contrasting the interpretations of the welfare effects of technological change in the utilitarian tradition and in Sen's capability approach. The empirical sections analyse the correspondence of the innovation capacity and welfare (well-being) situation in a Hungarian micro-regional data set. We conclude that the conventional informational basis of innovation policy is too narrow from a welfare perspective. Not only should the differences in the innovation systems, but also the peculiarities of the region's welfare situation be considered during the design of innovation policy. 相似文献
62.
Józef Kukulak 《Geochronometria》2014,41(3):294-305
Fragments of charcoal are present in floodplain alluvium of the San and Strwi?? rivers in the Polish part of the Bieszczady Mountains, Polish East Carpathians. They occur as single clasts or in lenses in the basal part of fine-grained alluvium, together with unburnt wood debris, or in the middle part of the vertical sequence of the floodplain alluvium. 14 samples of charcoal from the upper courses of the San (ca. 50 km) and the Strwi?? (ca. 10 km) were dated with radiocarbon. The obtained dates fall mainly in the 15th through 19th century interval; only one sample is markedly older (9th–10th century). Taxonomic composition of the charcoal source wood was also studied and compared with that of coeval forests. Correlation of the charcoal age with the history of economic development of the studied region indicates that charcoal is of anthropogenic origin: older charcoal from intense slash-and-burn deforestation, while younger charcoal was produced by local industries. 相似文献
63.
The purpose of this article is to explain and discuss the essential operational characteristics of the technology of power
(sensu Foucault) perpetrated on the internal frontiers with the Indians in nineteenth-century Argentina. The conquest and
colonization of the Pampas took shape in the establishment of military camp structures placed to create a defensive cordon,
known as “the Indian frontier line.” These constructions were fortlets defended by gaucho cavalry squadrons (know as Blandengues
during the Spanish period, and then Guardias Nacionales after Argentinean Independence). This process is known in Argentinean
historiography as “the conquest of the desert.” This particular technology of power existed in this historical context and
operated at every social level, impacting strongly on the lower classes that inhabited the incorrectly named “desert.” Its
implementation in the military field enabled the existence of an array of micro-powers that surrounded the gaucho, called
vago y malentretenido—“a vagrant and lingerer”—and their women's lives. The army as institution was the locus of various forms
of coercion and old forms of punishment (such as the stakes, whipping, and public executions) most of which affected peasants,
nonresidents, itinerant workers, and the rural youth. This schema was adopted in different areas: in the enrolment and discipline
of the gaucho soldiers, in life in the fortlet-prisons, and in the ritualism of power. The alternative chosen by soldiers
to evade this technology of power and the fortlet-panopticons was escape through desertion. The utility of those observations
is demonstrated, because an important part of the area of research of historical archaeology that has developed with the greatest
impetus in Argentina has taken fortlets as its subject of study. 相似文献
64.
65.
Mariano Ramos Fabián Bognanni Matilde Lanza Verónica Helfer Patricia Salatino Claudio Quiroga Diego Aguirre David Pau 《International Journal of Historical Archaeology》2008,12(3):209-247
In the central-southeastern area of Buenos Aires Province, Argentina, lies a mountainous area of low height in Tandilia that
contains important outcrops of quartzite and granite. A large number of buildings are made of massive blocks of rock, some
of them with a surface of over 1 ha. In addition to these completely artificial constructions are other structures that are
semi-natural, having been made in places with special topographical characteristics and complemented with dry-stone walls.
Scanty written documents allow us to attribute some of the constructions to an age before the permanent settlement of the
Creole population. In the Tandilia Sierras these structures are commonly known as “corrales de indios” (Indian corrals). This
designation involves a double prejudice with regard to function and cultural affiliation. Out of a total of 22 structures,
we analyze a group of 4 that were excavated to use to review the written documents. 相似文献
66.
This paper examines the spatial distribution of the Internet in the European regions. To achieve this aim, our analysis combines a set of non-parametric techniques proposed in the context of the economic growth literature, with various spatial econometric instruments. The results reveal that regional disparities in Internet adoption are greater than territorial inequalities in gross domestic product (GDP) per capita. In addition, our findings show that the distribution under consideration is characterized by the presence of positive spatial dependence, which implies that physically adjacent regions register a similar degree of Internet adoption. Finally, the analysis carried out allows us to assess the role played by variables such as GDP per capita, unemployment rate, stock of human capital and population density, in explaining the spatial distribution of the Internet in the European Union. 相似文献
67.
José Luis Hervás Oliver José Albors Garrigós Juan Ignacio Dalmau Porta 《European Planning Studies》2008,16(4):507-520
Classical industrial districts' literature is not focused on the role played by external ties but gives more importance to the local districts' endogenous development. Global value chains connect clusters to other external agents through external linkages and constitute a framework to analyse the complex inter-linkages between clusters and other external agents. In the field of the external ties and the global value chain approach Academia is primarily focused on the ties which link clusters in developing nations to global markets, although global value chains also consider connections between clusters in similar activities and even when both are located in developed nations. Thus, external linkages are mainly performed by multinational enterprise (MNE) affiliates which play fundamental role of knowledge diffusers and absorbers in the process of knowledge exchange throughout global value chains. The work examines the process of knowledge exchange between clusters through external ties using the global value chain approach. For this purpose, empirical work is conducted with 22 face-to-face interviews to provide a case study about a leading cluster in the global ceramic tile industry. Results show that the basic knowledge to successfully compete is locally originated, although it can be complemented with global knowledge learnt or generated in other territories. MNE affiliates bridge structural holes through external ties and reduce knowledge asymmetries within global value chains. External ties on network-based governance chains exist, matter and affect clusters allowing upgrading even between developed nations. 相似文献
68.
69.
Henriette Asséo Élisabeth Gessat-Anstett 《Revue de synthèse / Centre international de synthèse》2002,123(1):200-208
Sans résumé
CERI, 26 octobre 2001 相似文献
70.
André Moreira Cunha Daniela Magalhães Prates Pedro Perfeito da Silva 《Development and change》2020,51(5):1225-1245
This article evaluates the effects of external financial liberalization on Brazilian macroeconomic performance from 1995 to 2016. Its main contributions are to assess the influence of the global financial cycle on the level of external financial liberalization and to analyse the short- and long-run macroeconomic effects of such liberalization on the performance of a peripheral economy in the global currency hierarchy. Methodologically, the article employs the Markov-Switching Vector Autoregressive and Vector Error Correction models. The results show that the global financial cycle directly affects cross-border financial flows and frames the impact of external financial liberalization on the macroeconomic performance. The article concludes that external financial liberalization has negative macroeconomic effects in the short run and generates a trade-off between stability and growth in the long run. 相似文献