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   820篇
  免费   29篇
  2023年   9篇
  2022年   7篇
  2020年   28篇
  2019年   27篇
  2018年   39篇
  2017年   49篇
  2016年   48篇
  2015年   34篇
  2014年   39篇
  2013年   237篇
  2012年   29篇
  2011年   28篇
  2010年   25篇
  2009年   18篇
  2008年   28篇
  2007年   22篇
  2006年   16篇
  2005年   13篇
  2004年   16篇
  2003年   5篇
  2002年   12篇
  2001年   7篇
  2000年   4篇
  1999年   8篇
  1998年   15篇
  1997年   6篇
  1996年   10篇
  1994年   11篇
  1993年   3篇
  1992年   5篇
  1991年   5篇
  1989年   2篇
  1988年   1篇
  1987年   2篇
  1986年   3篇
  1985年   6篇
  1984年   3篇
  1983年   2篇
  1982年   1篇
  1981年   2篇
  1980年   1篇
  1978年   2篇
  1977年   2篇
  1976年   1篇
  1975年   3篇
  1973年   4篇
  1972年   3篇
  1971年   3篇
  1970年   1篇
  1966年   1篇
排序方式: 共有849条查询结果,搜索用时 15 毫秒
811.
In Sigtuna, Sweden, a medieval cemetery, including 227 skeletons, was analysed in 2006. On the outskirts of the churchyard, six skeletons with bone changes indicating systemic inflammatory disease were observed. Two out of three individuals with well‐preserved facial bone regions displayed signs of rhinomaxillary remodelling. Four of the afflicted exhibit severe bilateral alterations of the lower legs and phalanges of the feet and concentric atrophy of the metatarsals. In addition, one of the individuals exhibited a kyphosis in the lumbar vertebrae. In a discussion about alternative diagnoses, lepromatous leprosy and tuberculosis were identified as the causes of the destructive lesions in two individuals. Though the skeletal changes of the lower legs and feet in four cases demonstrate a close resemblance to secondary lesions of leprosy, the disease could not be confirmed. The skeletal changes of the last individual were unspecific and the possible causes several, rendering diagnosis difficult. The burial locations imply that the afflicted persons belonged to a lower social stratum. Due to the significantly higher frequency of pathological changes in the cemetery compared to other cemeteries in the town, the individuals could be regarded as fellow sufferers among others with various medical conditions. The bioarchaeological identification of systemic infectious diseases of a group of individuals of this size is unique to north of Scania in Sweden, where only a few cases of leprosy and tuberculosis have previously been diagnosed. The significance of the present study is emphasised by the interconnection between the afflicted, the archaeological context and the knowledge of the medieval society in Sigtuna. Copyright © 2010 John Wiley & Sons, Ltd.  相似文献   
812.
The history of vernacular landscapes at the urban fringe is poorly studied, limiting our understanding of the contemporary character of the fringe and our knowledge of the urbanization process. This article argues the necessity of a combined analysis of the legacies of planning and the footprints of former landscape ideals in order to understand the conditions for spatial planning at the urban fringe. After first introducing the methodological use of landscape/planning history, the article focuses on the Swedish discourse on landscape change and landscape planning concerning the urban fringe in the 1930s. Particular focus is placed on the discourse on agricultural landscapes at the urban fringe. The third section of the article presents an examination of the footprints of the ‘landscape convention’ (i.e. an agreement on the meaning of landscape in relation to law and justice) resulting from the landscape discourse of the 1930s. The article argues that the legacy of the 1930s explains some of the difficulties arising when planners of today aim to utilize the farm landscape as a resource for recreation at the urban fringe. The shadow of the landscape discourse of the 1930s also creates difficulties in dealing with peri‐urban landscapes in Swedish planning and Swedish law. With the ongoing discourse on how to implement the European Landscape Convention, such knowledge is particularly useful.  相似文献   
813.
Abstract

Disease outbreaks and pandemics have long played a role in societal and economic change. However, the nature of such change is selective, meaning that it is sometimes minimal and, at other times, and change or transformation may be unexpected, potentially even reinforcing contemporary paradigms. A comprehensive overview of pandemics and their effects is provided. This is used to help contextualise the COVID-19 pandemic, its impact on tourism and government, industry and consumer response. Drawing on the available literature, factors that will affect tourism and destination recovery are then identified. Some measures will continue or even expand present growth orientations in tourism while others may contribute to sustainability. It is concluded that that the selective nature of the effects of COVID-19 and the measures to contain it may lead to reorientation of tourism in some cases, but in others will contribute to policies reflecting the selfish nationalism of some countries. However, the response to planetary limits and sustainable tourism requires a global approach. Despite clear evidence of this necessity, the possibility for a comprehensive transformation of the tourism system remains extremely limited without a fundamental transformation of the entire planet.  相似文献   
814.
ABSTRACT

School lunch is in general regulated through policies and agendas constituted by the perspectives of adults. In this article, we focus on children’s lived experiences of school lunch with a special emphasis on emotions and how they relate to social and physical dimensions. This study draws on empathy-based stories written by 10–11 year olds (n?=?171) from schools in Sweden. We identified three themes: Interaction and exposure, Routines and restrictions and Food and eating. The children’s lived experiences of school lunch and the emotions attached to them are closely associated and intertwined with the socio-spatial dimension of school lunch. A pleasant meal experience seems to require harmonization between the physical and social space whilst negative experiences contain tensions between them, something that actors working with school lunch and school lunch environments should take in consideration when resourcing, planning and scheduling school lunch, and also when designing new school restaurants.  相似文献   
815.
816.
In 2013, the Finnish Ministry of Social Affairs and Health commissioned a testimony-driven inquiry into failings in child welfare in 1937–1983. An academic research team was appointed to produce data on maltreatment (knowledge production), to identify and recognize injustice (moral objective), and to recommend improvents in child welfare services (developmental objective). This article discusses the Inquiry and scrutinizes the strengths and weaknesses of the model applied. Two aspects emerged to suggest that commissioned research is susceptible. First, among care-leavers, the Inquiry raised a variety of expectations, which the report and subsequent apology ceremony were able to meet only partially. Second, as ad hoc teams were commissioned to draft recommendations with no political mandate, it is unclear who monitors whether recommendations are acted upon or not. However, the commissioned research had strengths in its knowledge production as well as in its political neutrality.  相似文献   
817.
The adoption of pottery in eastern Fennoscandia in the later sixth millennium BC has traditionally been understood in straightforward technological and practical terms, and as a development that did not mark other significant changes in local culture or ways of life. Recent research in the region, combined with new ideas about Neolithization in Eurasia more generally, nonetheless suggests that the adoption of pottery was associated with more fundamental cultural and environmental transformations than has previously been thought. This article brings together diverse old and new data from north‐eastern Europe and discusses the character and dynamics of cultural and human‐induced environmental change following the adoption of pottery. The aim is to provide a scenario of long‐term cultural changes and, in particular, to consider the significance and broader implications of the very practices of clay use and cultivation, as well as their links to wider cultural and environmental phenomena.  相似文献   
818.
819.
820.
Local topography is an important parameter determining the erection of a certain type of site on a certain location in the landscape. Despite the importance of topography in archaeological landscape research, the role of local topography has remained rather unexplored compared to other specific topographic parameters such as slope, aspect, curvature or visibility. Therefore, three methods to assess the relative topographic position of sites are applied and discussed here. The Bronze Age barrow dataset of northwest Belgium acts as the subject for this methodological case study. First, elevation percentile calculates the area that is lower than the central point within a predetermined neighborhood. Secondly, difference from mean elevation measures the relative topographic position of the central point as the difference between the elevation of this central point and the mean elevation within a predetermined neighborhood. And finally, deviation from mean elevation calculates the relative topographic position of the central point as the difference from mean elevation divided by the standard deviation of elevation, within a predetermined neighborhood. These three methods, each with their advantages and disadvantages, prove to be an added value for archaeological landscape research.  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