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   324篇
  免费   14篇
  2024年   1篇
  2023年   6篇
  2022年   3篇
  2021年   8篇
  2020年   11篇
  2019年   19篇
  2018年   22篇
  2017年   26篇
  2016年   24篇
  2015年   9篇
  2014年   13篇
  2013年   54篇
  2012年   12篇
  2011年   14篇
  2010年   8篇
  2009年   13篇
  2008年   11篇
  2007年   9篇
  2006年   9篇
  2004年   10篇
  2003年   6篇
  2002年   11篇
  2001年   1篇
  2000年   7篇
  1999年   3篇
  1998年   7篇
  1997年   4篇
  1996年   5篇
  1995年   2篇
  1994年   1篇
  1993年   1篇
  1992年   1篇
  1987年   1篇
  1984年   1篇
  1978年   2篇
  1974年   1篇
  1969年   1篇
  1967年   1篇
排序方式: 共有338条查询结果,搜索用时 15 毫秒
81.
82.
Carbonized fruits and seeds from two recently investigated Iron Age hilltop settlements, one located north and the other south of the main Alpine range, were analyzed and reveal a detailed insight in the subsistence strategies of the Eastern Alps. The results were compared with archaeobotanical data sets from other Iron Age excavation sites in Austria, Eastern Switzerland and Northern Italy. On the basis of variable data from 17 sites it is not possible to detect a geographical pattern through statistical analyses. On the basis of the frequencies, however, it becomes clear that the principal cereals were Hordeum vulgare (hulled six-rowed barley), Triticum dicoccon and T. spelta (emmer and spelt) and Panicum miliaceum (broomcorn millet). In addition, foxtail millet (Setaria italica) as well as naked wheat played some role. Legumes such as Vicia faba (horse bean) and Pisum sativum (pea) also occurred regularly and supplemented the diet of the prehistoric settlers. More systematic research with standardized methods is however urgently needed to corroborate the existing data.  相似文献   
83.
84.
85.
Rachel Humphris  Nando Sigona 《对极》2019,51(5):1495-1514
This article investigates the “bureaucratic capture” of migrant children through three technologies of the state: labelling, data production and social services, illuminating the ways visibility and invisibility are constructed and managed in the context of restrictionist immigration regimes. Using the case of unaccompanied asylum‐seeking children, Roma children and undocumented children, we examine how in/visibility is produced; for what purposes, and with what consequences. We demonstrate through the simultaneous broadcasting and disappearance of migrant children, bordering is reconstituted through various performances, rationalities and technologies of immigration governance. The article argues the notion of “best interests” is drawn on when the state can define these interests in accordance with their political aims and resources. The set of cases taken together provide novel insights into how states reconcile conflicting logics and reveals how the implementation of the child rights regime prevents some children from actualising their rights.  相似文献   
86.
This paper systematises the framing of the terrorism issue in the programmatic agenda of the Front national (FN) by focusing on nationalism. We argue that the FN's position on terrorism constitutes part of its strategy to justify its anti‐immigrant agenda by offering ideological rather than biological rationalisations for national belonging. To test our argument empirically, we operationalise four categories of nationalism, including ethno‐racial, cultural, political‐civic, and economic, and code official FN materials published in reaction to seven terrorist attacks on French soil during the period 1986–2015. We find that whilst older documents draw on all four categories, Marine Le Pen documents draw almost exclusively on the cultural and political‐civic categories, confirming our argument. Building on the “normalisation” or “de‐demonisation” approach, our nationalism framework presents a distinct theoretical advantage by allowing us to conceptualise the shift in the party's programmatic agenda.  相似文献   
87.
88.
To test how crime affects economic activity, we use point‐specific data on crime, commercial property sales and assessed values from New York City, relying on an instrumental variables strategy. We find that crime reduces commercial property values, and the magnitude of the effect depends on the type and geography of crime. Elasticities range from ?0.1 to ?0.5. We find stronger evidence for negative violent crime effects in neighborhoods with lower incomes and higher shares of minority residents. Thus, disadvantaged neighborhoods are doubly harmed by crime—they have higher crime rates and those crimes have stronger effects on economic activity.  相似文献   
89.
The study shows the relation between urban green and (urban) stress within the urban district Bonn, Germany. How do urban ecosystem services influence the subjective well-being? A triangulation of methods (site’s inspections, online survey) was applied to collect data on the availability and state of urban green spaces regarding the urban district of Bonn and by whom, why and how often they are visited. Of special interest could be the ecological state of the green space. The ecological state of green spaces in Bonn was assessed and connected to the results of the online survey. Thus, health effective potentials of urban green can be given. Main advantages were proved by an excellent network of green infrastructure as well as big green spaces or rather open catchment areas.  相似文献   
90.
HIV health services research conventionally defines place in terms of proximity to care. However, understandings of place must also include the social spaces that women living with HIV (WLWH) occupy which shape their experience of health and access to care. Drawing on focus group data from the Canadian HIV Women’s Sexual and Reproductive Health Cohort Study, we explored how 28 WLWH navigate geographic place and social space in attempting to access HIV-related healthcare within and across a range of urban to rural localities in British Columbia (BC), Canada. We describe how existing services, even if physically close, can be socially marginalizing as women confront HIV stigma, racism, and classism, which operate to exclude women from the places and spaces they must access for care. We also emphasize how women enact ‘geographies of resistance’ and succeed in carving out their own safe options for care and support. Finally, we share recommendations identified by women themselves towards developing local and community-driven ‘geographies of change’ that support the health and healing of diverse communities of WLWH. Our findings stress the urgent need to acknowledge and redress socio-spatial barriers to care and to work with WLWH to co-create a therapeutic landscape that reflects women’s diverse identities, localities, emotions, and experiences.  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