全文获取类型
收费全文 | 517篇 |
免费 | 19篇 |
出版年
2023年 | 4篇 |
2022年 | 2篇 |
2020年 | 8篇 |
2019年 | 22篇 |
2018年 | 27篇 |
2017年 | 23篇 |
2016年 | 25篇 |
2015年 | 23篇 |
2014年 | 10篇 |
2013年 | 153篇 |
2012年 | 14篇 |
2011年 | 13篇 |
2010年 | 11篇 |
2009年 | 6篇 |
2008年 | 14篇 |
2007年 | 13篇 |
2006年 | 12篇 |
2005年 | 5篇 |
2004年 | 10篇 |
2003年 | 9篇 |
2002年 | 4篇 |
2001年 | 3篇 |
2000年 | 2篇 |
1999年 | 5篇 |
1998年 | 8篇 |
1997年 | 6篇 |
1996年 | 6篇 |
1995年 | 4篇 |
1994年 | 11篇 |
1993年 | 4篇 |
1992年 | 4篇 |
1991年 | 8篇 |
1990年 | 2篇 |
1988年 | 2篇 |
1987年 | 5篇 |
1986年 | 5篇 |
1985年 | 6篇 |
1984年 | 3篇 |
1983年 | 4篇 |
1982年 | 4篇 |
1981年 | 3篇 |
1980年 | 2篇 |
1979年 | 2篇 |
1977年 | 4篇 |
1976年 | 5篇 |
1975年 | 7篇 |
1973年 | 3篇 |
1972年 | 2篇 |
1971年 | 2篇 |
1969年 | 2篇 |
排序方式: 共有536条查询结果,搜索用时 31 毫秒
41.
ABSTRACTThis article analyses regional agency in the early phases of new path constitution. We argue that the early stages of new path constitution can be explained by both structural factors and the strong presence of agency. With a specific focus on agency, this article contributes to the literature by providing a study of the role of agency at different stages of path constitution. The study shows that two types of agency operate together. Public policy agency is carried out through a common thrust for policy tools that can enhance the room to manoeuvre together. In addition, strong entrepreneurial agency functions as a locomotive for other firms which are important trigger points, and pushes the process forward. These two forms of agency need to be interrelated to constitute new paths. 相似文献
42.
43.
Ginger A. Johnson 《Children's Geographies》2014,12(2):219-231
Previous studies produced on the movement of individuals with HIV/AIDS for the obtainment of medical services have rarely been conducted in the Global South and have neglected the experiences of child patients. This article presents a new type of travel for medical care, where HIV+ children in Kenya are being placed or choose to be placed in orphanages in order to obtain constant access to antiretroviral (ARV) therapy, proper nutrition, and education. Through participant observation and photo-elicitation interviews with children in orphanages and their immediate family members in the surrounding Njabini community, this study focused on documenting children's agency in influencing movement decisions to orphanages for better health outcomes. Photo-elicitation interviews in particular allowed for greater insight into children's lives, their motivations for moving to an orphanage, and as a tool to facilitate discussion. Qualitative methods utilized with family members similarly privileged their interpretations of how child movement out of the house would help achieve the ‘best’ possible future for their children, particularly those living with HIV. Study findings shed light on the active role played by children in decisions to move to orphanages, the visualization of these facilities as the best place to secure access to ARV therapy and ensure proper child health, and the interaction that continues to take place between children and their family members once they enter these spaces. 相似文献
44.
Are some American states inherently more innovative than others? This question has confounded researchers for more than four decades. In this study we develop a measure of collective policy innovation that measures formal cooperative policy arrangements among the states, compare the measure to existing measures of internal state policy innovation, and assess whether existing innovativeness measures explain policy cooperation among the states. This test of the innovativeness concept addresses internal and external validity concerns that have long plagued this research tradition. Our multivariate analyses indicate that policy innovativeness is often a statistically and substantively important determinant of compact participation. These results suggest that (i) innovativeness is a meaningful and durable state attribute, (ii) several existing indices successfully capture the underlying latent concept, and (iii) innovativeness provides analytic utility in multiple empirical contexts. 相似文献
45.
Laser-Induced Breakdown Spectroscopy (LIBS) was used in the examination of Bronze Age painted plaster samples from several sites in the Aegean and Eastern Mediterranean. The elemental content of paint materials was determined in most cases leading to the identification of the pigment used in agreement with data from analyses of the same samples with other established techniques. The analyses demonstrate that a virtually non-destructive technique such as LIBS provides sufficient data for the elemental characterisation of painting materials while in parallel has the capability for routine, rapid analysis of archaeological objects enabling the quick characterisation or screening of different types of artefacts. This certainly shows an important way forward in technological studies of fragile and scarce archaeological material. 相似文献
46.
Matthew A. Russell David L. Conlin Larry E. Murphy Donald L. Johnson Brent M. Wilson James D. Carr 《International Journal of Nautical Archaeology》2006,35(2):310-318
Current research on USS Arizona is focused on a minimum-impact technique for calculating corrosion rate of the battleship's steel hull by analysing physical and chemical properties of marine encrustation covering the exposed hull. An equation is derived that allows concretion thickness, density, and total iron content to be used to calculate corrosion rate of steel hull plate.
© 2006 The Authors 相似文献
© 2006 The Authors 相似文献
47.
Carol Johnson 《Australian journal of political science》2004,39(3):535-551
This article focuses on Mark Latham's views on equality. Latham's emphasis on education and on overcoming suburban, spatial inequality draws on the Whitlamite tradition. However, his work also draws on neoliberal influences and on arguments regarding the impact of the information economy. Both these influences have contributed to a move away from more traditional Labor and social‐democratic views on class, racial and gender inequality. This article considers Latham's relationship with traditional Labor ideology as well as with Third Way politics. Latham's arguments regarding the role of elites and the implications that this has for his understandings of the city, capitalism and diverse forms of inequality are also addressed. Latham's earlier views still influence his speeches and electoral strategy as Labor Leader. 相似文献
48.
49.
In Canada and elsewhere, there is a growing belief that farming and rural communities have become effectively disconnected from one another. While attention to recent media reporting suggests that incidences of conflict are now as common as examples of support and collaboration, it is suggested that many examples of complementarity remain. These evolving relationships may, however, be linked to the nature of specific farm development trajectories. Such possibilities warrant empirical examination, with attention to known diversity in the family farm sector. This paper reports on an empirical investigation of farm and community linkages in North Huron County, Ontario. The paper builds upon a recent investigation of change in family farming in this region and seeks to document the ways in which local farmers continue to look to their rural communities for support of various kinds. Data are drawn from a survey of farmers in Ashfield and Colborne Townships in 1999. The research explores community linkages around three dominant themes: participation in organisations, purchasing and perceptions and experiences of community support for farming. The findings indicate the persistence of strong linkages between farms and local communities in the study region but point to a potential tendency for disconnection between farms pursuing aggressive expansion and local community organisations and businesses. There is some evidence that jobs and a variety of farm household considerations may form key linkage points between the two sectors, with the importance of these mediated by farm business trajectories and the family life course. 相似文献
50.
Craig Johnson 《Development and change》2004,35(3):407-434
It would not be a great exaggeration to say that scholars of environmental conservation and conflict have re‐discovered the institutional foundations of social and economic life. At the heart of this ‘renaissance’ is the belief that property and property relations have a strong bearing on how people use, manage and abuse natural resource systems, and that institutional arrangements based on the creation and management of common property can have positive impacts on resource use and conservation. Two bodies of thought compete for a voice in this literature. One, which aims to resolve Hardin's tragedy of the commons, is primarily concerned with the problem of encouraging collective action to conserve resources that are both depletable and unregulated. A second, influenced by notions of moral economy and entitlement, deals with the problem of creating and sustaining resource access for poor and vulnerable groups in society. This article argues that the literature on common property has become divided between a body of scholarship that uses deductive models of individual decision‐making and rational choice to explain the ways in which different types of property rights arrangements emerge and change over time, and one whose questions, aims and methods are more modest, and historically‐specific. It then aims to understand this evolution by situating the mainstream common property discourse in the wider intellectual trend of positivism, methodological individualism and formal modelling that has come to dominate social science in the United States. In so doing, it attempts to unravel the political and ideological foundations of what has come to be a dominant mode of understanding environmental problems, and solutions to these problems. 相似文献