全文获取类型
收费全文 | 819篇 |
免费 | 62篇 |
出版年
2024年 | 6篇 |
2023年 | 23篇 |
2022年 | 7篇 |
2021年 | 6篇 |
2020年 | 34篇 |
2019年 | 38篇 |
2018年 | 92篇 |
2017年 | 68篇 |
2016年 | 66篇 |
2015年 | 44篇 |
2014年 | 46篇 |
2013年 | 167篇 |
2012年 | 35篇 |
2011年 | 31篇 |
2010年 | 38篇 |
2009年 | 24篇 |
2008年 | 22篇 |
2007年 | 17篇 |
2006年 | 10篇 |
2005年 | 7篇 |
2004年 | 6篇 |
2003年 | 6篇 |
2002年 | 10篇 |
2001年 | 3篇 |
2000年 | 5篇 |
1999年 | 6篇 |
1998年 | 7篇 |
1997年 | 4篇 |
1996年 | 5篇 |
1995年 | 5篇 |
1994年 | 5篇 |
1993年 | 4篇 |
1992年 | 3篇 |
1991年 | 3篇 |
1990年 | 2篇 |
1989年 | 4篇 |
1988年 | 2篇 |
1987年 | 2篇 |
1986年 | 2篇 |
1985年 | 3篇 |
1984年 | 2篇 |
1982年 | 1篇 |
1981年 | 1篇 |
1980年 | 1篇 |
1979年 | 1篇 |
1978年 | 1篇 |
1974年 | 1篇 |
1973年 | 2篇 |
1972年 | 1篇 |
1971年 | 1篇 |
排序方式: 共有881条查询结果,搜索用时 15 毫秒
121.
Land fragmentation can be an important drawback for the development of rural areas. Due to the small size of the units, land management and planning are difficult from both the private and the public point of view. In some regions of Europe, land fragmentation can lead to the collapse of land-based activities such as agriculture and forestry. This process triggers land abandonment, which causes social, economic and environmental problems. Traditional interventions such as land consolidation have not worked because of the scale of land fragmentation, which leads to huge transaction costs. New planning instruments and governance structures for land management that balance the relations between property rights, management and labour force can be developed, in order to avoid the problems of land fragmentation. In this paper, we present two innovative examples of land management and governance structures for dealing with land fragmentation in rural areas of Galicia northwestern Spain. They were able to combine the use of individual and common property rights to make land use more sustainable, instead of trying to change land ownership. The new governance structures helped to increase efficiency and sustainability of the land use by, for example, increasing labour productivity, clarifying property rights and diminishing land abandonment. 相似文献
122.
123.
124.
Emma Pomeroy Jay T. Stock Sonia R. Zakrzewski Marta Mirazn Lahr 《International Journal of Osteoarchaeology》2010,20(3):317-334
Artificial cranial modification (ACM) involves the alteration of cranial vault shape by cultural means, and is performed during infancy while the cranial bones remain soft and malleable. The direction of normal cranial growth is altered through the application of external forces. In this study, three types of ACM from north‐central Peru (posterior flattening, bilobed and circumferential) were analysed using standard craniometric techniques. The aim was to determine the effects of these forms of ACM on craniofacial morphology, and the extent to which different types of ACM could be distinguished from one another and unmodified crania on the basis of these measurements. Significant differences between artificially modified and unmodified crania, and between different types of ACM, were demonstrated in cranial vault shape for all types. Significant differences in facial morphology were found only in the bilobed group compared with the unmodified crania. Canonical variates analysis (discriminant analysis) confirmed that major differences between modification types and unmodified crania were in measurements and angles of the cranial vault. While the results show some similarities to previous studies, they add to the variability in the patterns and extent of differences documented to date. It is suggested, based on these results and visual observations, that interpopulation variation in ACM within major modification categories may explain some of the variability in results between studies, an explanation which has previously received insufficient recognition but which remains to be tested since varied methodology between studies may also be a contributory factor. While previous studies have often sought to generalise about the effects of ACM, the examination of the differences between populations even within major ACM categories may offer new insight into cultural variation in modification techniques between populations and the nature of craniofacial development. Copyright © 2009 John Wiley & Sons, Ltd. 相似文献
125.
Gábor Kármán 《European Review of History》2010,17(4):555-579
The survey discusses the identity and self-image of seventeenth-century Hungarian and Transylvanian travellers as conveyed through their travel texts. The cultural borders in the mental map of the travellers coincided with the eastern and south-eastern borders of Transylvania. They placed themselves in the same position as their Western European contemporaries. Although the general tone of their diaries was one of admiration, they did not make explicit comparisons to the disadvantages of their home. There are also some cases of criticism on a civilisational basis towards the West, which shows that the travellers felt that they were on equal grounds to the West. The few cases of auto-stereotypes also show that some travellers tended to reinforce even the negative stereotypes attributed to Hungarians in order to question the Western discourse which placed them on a lower grade on a scale of civilisation. Towards their Eastern neighbours, the travellers tended to use a condescending tone: qualities such as boorishness, lack of education and barbarity were attributed to Russians, Wallachians and Moldavians. The worst reputation belonged to the Ottomans: in their case, even if – in a very few cases – tolerance and understanding came into picture, there was no possibility of acceptance. Hungarian travellers only used the discourse of their own inferiority towards Western Europeans when it was a part of their political agenda – otherwise, they included themselves in the concept of the region, imagined on the basis of erudition and Latin education – which they more and more often called Europe. 相似文献
126.
Carmen López Sáenz 《European Legacy》2009,14(4):427-441
This essay examines how hermeneutic philosophy, particularly Gadamer's, recovers rhetoric, less as the art of speaking well than as a statement of a truth of the sensus communis, that which communicates veracious content through argumentation. This is the sense in which Gadamer acknowledges the ubiquity of rhetoric and hermeneutics as components of linguisticity (Sprachlichkeit). Conceived in the context of non-methodical wisdom and phronesis, Gadamer's rehabilitated rhetoric is concerned with pragmatics and ethics. Rhetoric is no longer viewed as a technique of verbal manipulation and becomes relevant for dialogic communication. Gadamer thus joins the Habermasian criticism of formalized reason that is detached from values. Both of them reject instrumental reason, because it has colonized communicational reason. However, since Gadamer's view of rhetoric has also been criticized by Habermas and Ricoeur their objections cannot be overlooked in a discussion of his hermeneutics. The essay concludes with a brief consideration of the implications of the debate on rhetoric, hermeneutics, and communication for the twenty-first century. 相似文献
127.
ABSTRACT We use disaggregated data on Chilean plants, and the Chilean input–output table to examine the impact of agglomeration spillovers on total factor productivity (TFP). In common with previous studies, we find evidence for intraindustry spillovers, but none for general cross‐industry spillovers. This picture changes when we take vertical industry relations into account. There are important productivity spillovers from plants in upstream industries. Interestingly, a similar effect cannot be found from plants in downstream industries. The number of plants in these sectors has no effect on plant‐level TFP, just as the number of plants in other industries that are neither important upstream suppliers nor downstream customers also has no effect. 相似文献
128.
The bearded vulture (Gypaetus barbatus), a bird or prey that mainly feeds on bones of large mammal carcasses, has been recently evidenced as an accumulating agent with significant contributions to palaeontological assemblages in caves and shelters, but extremely rare at archaeological sites. The results of the taphonomic analyses carried out in the Upper Palaeolithic layers of El Mirón Cave (Cantabrian Spain), which are presented here, evidence the existence of special digestive marks and a typical skeletal pattern in a noticeable amount of small and medium-sized ungulates bones. This fact suggest that a representative part of the bone assemblage has been caused by bearded vultures, and strengthens the idea that this bird has to be definitely included among other potential non-human accumulators in archaeological sites. 相似文献
129.
Marie-Hélène Moncel María Gema Chacón Aude Coudenneau Paul Fernandes 《Journal of archaeological science》2009
The lithic assemblage from the Middle Palaeolithic site of Payre (Rhone Valley, France) contains a large number of convergent tools and pointed tools of various shapes, sizes and retouch types. These were excavated from several archaeological units, dating from marine isotopic stages 8–5, which also yielded human skeletal remains. Consideration of this large tool kit has led to an improved analysis of Middle Palaeolithic tools with two retouched convergent edges. The 350 tools were not described within the classical typological framework, but, rather, from a lithic technological perspective in relation to a discoid debitage. In addition, an initial macroscopic use-wear analysis aided in establishing whether they were used according to their technical and/or morphological features. The Middle Palaeolithic convergent tools from Payre are shown to be quite diversified, and the question of the significance of the retouch and the definition of the various types is addressed. Initial functional results indicate that a clear relationship between shape and function cannot be easily established, and that these tools were used as hand tools. This study contributes to the debate on the use of stone tip spears in the Early European Middle Palaeolithic. 相似文献
130.
Gearóid Ó Tuathail 《Political Geography》2009,28(1):4-15
The aftermaths of terrorist spectacles are intensely consequential moments in the making of geopolitical meaning. This paper develops a critical geopolitical account of the ways in which key actors involved in the terrorist incident at School Number 1 in Beslan North Ossetia constructed its meaning and justified their actions. The event is examined from three perspectives: the terrorist's Beslan, the Kremlin's Beslan and the contested meaning of Beslan among Ossetians and others in the North Caucasus. Multiple sources are utilized in the construction of the account: an English language archive of Russian reporting on the event, accounts of the siege, statements by key protagonists, elite interviews in North Ossetia, and the results of a survey question in North Ossetia and the North Caucasus on Beslan. The paper examines the construction of blame by the various actors and relates it to indiscriminate geographies, sweeping acts of abstraction whose homogenizing effects make (counter)terrorist violence possible. 相似文献