全文获取类型
收费全文 | 379篇 |
免费 | 8篇 |
专业分类
387篇 |
出版年
2023年 | 6篇 |
2020年 | 8篇 |
2019年 | 13篇 |
2018年 | 21篇 |
2017年 | 19篇 |
2016年 | 22篇 |
2015年 | 11篇 |
2014年 | 13篇 |
2013年 | 69篇 |
2012年 | 13篇 |
2011年 | 19篇 |
2010年 | 12篇 |
2009年 | 19篇 |
2008年 | 17篇 |
2007年 | 9篇 |
2006年 | 8篇 |
2005年 | 7篇 |
2004年 | 8篇 |
2003年 | 2篇 |
2002年 | 5篇 |
2001年 | 4篇 |
2000年 | 3篇 |
1999年 | 6篇 |
1998年 | 5篇 |
1997年 | 9篇 |
1996年 | 4篇 |
1995年 | 3篇 |
1993年 | 3篇 |
1992年 | 6篇 |
1991年 | 2篇 |
1990年 | 4篇 |
1989年 | 2篇 |
1988年 | 4篇 |
1987年 | 1篇 |
1986年 | 1篇 |
1985年 | 2篇 |
1984年 | 3篇 |
1983年 | 3篇 |
1982年 | 1篇 |
1981年 | 2篇 |
1980年 | 3篇 |
1979年 | 1篇 |
1978年 | 3篇 |
1977年 | 3篇 |
1976年 | 1篇 |
1974年 | 1篇 |
1973年 | 1篇 |
1965年 | 1篇 |
1963年 | 1篇 |
1962年 | 1篇 |
排序方式: 共有387条查询结果,搜索用时 15 毫秒
171.
Jan Willem De Kort Roel Lauwerier Bertil Van Os Cees Van Rooijen 《Conservation and Management of Archaeological Sites》2013,15(1-3):321-327
A Merovingian burial ground in Borgharen was threatened by development. Plans however could be changed so the site could be preserved. The initial research however showed the bone material was at risk of severe degradation in the near future. In order to determine whether in situ preservation was feasible three campaigns were carried out. This led to the conclusion that the burial conditions were excellent and there was little risk that severe degradation will reduce archaeological information of the site over the coming decades. The remaining threat concerned illegal excavators with metal detectors and spades. To protect the site it was covered with a series of different materials to prevent the site from being looted. 相似文献
172.
173.
174.
Foregone benefits of the open space that is sacrificed through urban sprawl are hard to quantify. We obtain a simple benchmark measure by introducing a demand for trips beyond the urban boundary into the monocentric city model. The externality arises from the increase in travel costs that expansion of the city imposes on its prior inhabitants. An empirical application illustrates the moderate informational requirements. It indicates that open space externalities warrant rather mild restrictions on urban expansion. 相似文献
175.
Jianxi Feng Martin Dijst Bart Wissink Jan Prillwitz 《Tijdschrift voor economische en sociale geografie = Journal of economic and social geography = Revue de géographie économique et humaine = Zeitschrift für ?konomische und soziale Geographie = Revista de geografía económica y social》2014,105(3):315-330
In post‐reform China, rapid motorisation causes various problems like traffic congestion, diminishing road safety and air pollution. Adequate policies necessitate an understanding of the forces behind changing mode choices, but the rapidly developing literature is not complete yet. This paper aims to help fill that gap with an analysis of mode choice for commuting and shopping‐leisure trips in Nanjing. Using the Nanjing Residents Travel Survey, we find that models with the same independent variables explain mode choice in Nanjing better than in other cities in the world. Comparatively, members of ‘adult families’ use public transport and walking more often than the private car and bicycle. And inhabitants of danwei neighbourhoods walk more often than residents in commodity housing estates. These conclusions suggest that ongoing socio‐spatial transformations will push mode choice in China further towards private car use. 相似文献
176.
Jan Kunnas 《Scandinavian journal of history》2013,38(3):281-311
Quantitative calculations on the use of natural resources provide valuable tools, which can give new insights to old questions and rise new ones. In this article, I compare the wood consumption in the production of potash, saltpeter and pine wood tar in 19th century Finland. My calculations shows that in the 19th century the cumulative wood consumption in the production of potash might have been higher or at least on the same level as in the production of tar, while the production of saltpeter consumed only a fraction. In the 1830s their combined wood consumption reached the level of slash‐and‐burn cultivation. 相似文献
177.
Jan Harding 《Norwegian Archaeological Review》2013,46(2):88-101
The archaeology of time, in its current form, is problematic. Some recent studies have considered either the ‘event’ or the ‘structure’ as pivotal to experiencing temporality, yet this is at odds with those more detailed and theoretically‐explicit accounts of time, developed within related disciplines, which consider both as intrinsic and inseparable parts of this experience. Other archaeological studies regard event and structure as nested within a hierarchical scheme of interpretation. But these examples of time perspectivism, which are largely inspired by Braudel and the Annales School, lack any overall conception of temporality and divorce time from the social context within which it acquires meaning. Rather, the complexity of time, including the crucial relationship between memory and anticipation, is only grasped by a genealogical approach whereby interpretation is problem‐orientated. This is to focus on particular questions about the origin, reproduction and transformation of individual institutions, practices and material culture. 相似文献
178.
179.
180.