首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   1235篇
  免费   60篇
  2023年   6篇
  2022年   7篇
  2020年   20篇
  2019年   35篇
  2018年   42篇
  2017年   59篇
  2016年   51篇
  2015年   29篇
  2014年   33篇
  2013年   444篇
  2012年   42篇
  2011年   32篇
  2010年   41篇
  2009年   37篇
  2008年   25篇
  2007年   29篇
  2006年   15篇
  2005年   16篇
  2004年   15篇
  2003年   19篇
  2002年   17篇
  2001年   18篇
  2000年   13篇
  1999年   22篇
  1998年   8篇
  1997年   13篇
  1996年   11篇
  1995年   13篇
  1994年   9篇
  1993年   8篇
  1992年   10篇
  1991年   6篇
  1990年   6篇
  1989年   7篇
  1987年   6篇
  1986年   6篇
  1985年   8篇
  1984年   9篇
  1982年   5篇
  1981年   11篇
  1980年   9篇
  1979年   14篇
  1978年   4篇
  1977年   6篇
  1976年   7篇
  1975年   6篇
  1974年   8篇
  1973年   11篇
  1972年   4篇
  1971年   4篇
排序方式: 共有1295条查询结果,搜索用时 15 毫秒
61.
During the past decade research into the German Final Paleolithic and Mesolithic has experienced an important revival. One clear sign of this renewed interest in the periods are the annual meetings of the Arbeitsgruppe Mesolithikum (Mesolithic Working Group) which have taken place every spring since 1992. At these meetings, which take place at changing venues, topical themes of Final Paleolithic and Mesolithic interest are presented by informal lectures and it is also possible to study regional collections (artifacts, raw materials) at first hand. Numerous contributions were subsequently published together in one volume (Conard and Kind (1998) Aktuelle Forschungen zum Mesolithikum/Current Mesolithic Research, Mo Vince, Tübingen). The present paper intends to complement that collection of papers with a synthesis of developments and perspectives and to present recent research highlights in the German Final Paleolithic and Mesolithic, together with a comprehensive bibliography, to a wider international audience.  相似文献   
62.
A 19th‐century dog burial uncovered from a historical homelot in Toronto, Canada, provided a unique opportunity to reconstruct the individual's osteobiography. Of particular interest are the dog's very large size and a suite of skeletal pathologies. Recovery of a nearly complete skeleton combined with the use of X‐rays and micro‐computed tomography (micro‐CT) allowed for a discriminating differential diagnoses. Stable isotope analyses were applied to investigate questions of diet. Results reveal an individual who suffered greatly from disease towards the end of his life and hint at its owners attitudes towards dogs. The interdisciplinary approach applied to this case study highlights the potential information obtainable from pet burials. We argue that better analyses and reporting of pet burials will help address research questions targeting broader themes related to human–animal relationships. Copyright © 2015 John Wiley & Sons, Ltd.  相似文献   
63.
64.
Leapfrog development is a typical form of sprawl. This paper aims at analyzing the existence, size, and persistence of leapfrogging in a dynamic urban economic model with endogenous green amenities. We analyze whether incoming households choose to settle at the fringe of the city or to jump further away depending on their preferences and the structure of the city. We first provide an analytical treatment of the conditions and characteristics under which a first leapfrog occurs and show how the optimal choice is affected by the size of the city, income, commuting costs, as well as the size of the area where green amenities are considered. We then study how further leapfrogging and multiple urban rings may appear and be maintained in the long‐run equilibrium, and how infill processes take place through time.  相似文献   
65.
ABSTRACT We investigate the relationship between income tax rate variation and internal migration for the unique case of Switzerland, whose system of determining tax rates primarily at the community level results in enough variation to permit analysis of their influence on migration. Specifically, using Swiss census data, we analyze migratory responses to tax rate variations for various groups defined by age, education, and nationality/residence permit. The results suggest that young Swiss college graduates are most sensitive to tax rate differences, but the estimated effects are not large enough to offset the revenue‐increasing effect of a rise in tax rate. The migratory responses of foreigners and other age‐education groups are even smaller, and reverse causation seems negligible.  相似文献   
66.
In this paper, we describe and reflect upon our journey through Indigenous online mapping in Canada. This journey has been planned according to an academic goal: assessing the potential of online cartography for decolonial purposes. To reach this goal, we have followed methodological directions provided by Indigenous scholar Linda Tuhiwai Smith to review 18 Indigenous web-mapping sites across Canada. Supported by a series of ten interviews, this content analysis enabled us to sketch some of the contours of contemporary Indigenous cartography. On one hand, Indigenous communities largely control the data that are shared on these websites. They also partially control the way these data are represented through the mobilization of digital storytelling technologies that are better aligned with Indigenous ways of envisioning relationships to places than conventional maps. On the other hand, they do not have much control over the technological aspects of these projects, for which they remain heavily dependent on non-Indigenous partners. Throughout this journey, we noticed that women's voices remained marginal in most of these mapping projects, but we also identified evidence supporting the idea that these voices are starting to play a vital role in the on-going effort of decolonizing mapping processes.  相似文献   
67.
The Slavonic Lives of Constantine/Cyril (d. 869) and Methodius (d. 885) are generally considered to have been written shortly after the death of these two saints, and in any case in the ninth century. However, the present article tries to show that this contention is not conclusive. Instead, it argues for a later writing, in the course of the tenth or eleventh centuries, taking into account in particular the authors' use of older Latin sources on the same theme. As a result, the specific information from these two Lives is subject to caution, which has important consequences for the biography of Constantine/Cyril, for the modalities of the papal mission to Moravia, and more generally for the history of the Slavic countries in the ninth century.  相似文献   
68.
69.
This article continues research into social mobility in England in the nineteenth century by examining the links with different occupational structures, socio-economic and industry/occupation, for a specific location. This allows an examination of the impact of the characteristics of these structures on occupational and thence on social mobility. Occupational mobility has long been recognised as a major determinant of social mobility and has been the subject of a number of papers, usually to determine how much a specific variable affects the level and type of mobility observed. Rarely do these analyses consider the location’s occupational structure, and its changes, as a determinant of the level of mobility. This paper finds that much of the variability of occupational mobility of a locality is determined by the characteristics of the different industries and occupations in that location. Industries and occupations provide a context within which other factors, such as literacy, operate.  相似文献   
70.
This paper commences a geographical engagement with makerspaces, hacklabs, and other workshop spaces which form part of a broader ‘maker movement’. It examines the arts of inquiry and experimentation found at one such site, drawing on ethnographic field work at the Edinburgh Hacklab, and makes connections with emerging themes of interest to geographers, including creativity, experiment, art, and nonhuman agency. Putting standard innovation-driven narratives of makerspaces into question, attention is instead turned to the events of emergent experimentation and creativity taking place in these spaces. To this end, Andrew Pickering’s concept of ‘ontological theatre’, describing powerful focal instances of agential symmetry between humans and nonhumans, is engaged with, in order to understand the links between Hacklab activities and emergent and complex aspects of nonhuman agency.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号