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   2242篇
  免费   522篇
各国政治   411篇
工人农民   91篇
世界政治   267篇
外交国际关系   138篇
法律   980篇
中国政治   51篇
政治理论   791篇
综合类   35篇
  2023年   8篇
  2021年   32篇
  2020年   49篇
  2019年   168篇
  2018年   108篇
  2017年   154篇
  2016年   166篇
  2015年   150篇
  2014年   137篇
  2013年   615篇
  2012年   103篇
  2011年   117篇
  2010年   123篇
  2009年   58篇
  2008年   77篇
  2007年   48篇
  2006年   62篇
  2005年   36篇
  2004年   49篇
  2003年   33篇
  2002年   37篇
  2001年   24篇
  2000年   26篇
  1999年   33篇
  1998年   16篇
  1997年   22篇
  1996年   22篇
  1995年   24篇
  1994年   19篇
  1993年   18篇
  1992年   14篇
  1991年   12篇
  1990年   16篇
  1989年   17篇
  1988年   17篇
  1987年   11篇
  1986年   16篇
  1985年   9篇
  1984年   13篇
  1983年   12篇
  1982年   7篇
  1981年   12篇
  1980年   8篇
  1979年   12篇
  1978年   11篇
  1977年   8篇
  1976年   4篇
  1970年   3篇
  1968年   5篇
  1966年   3篇
排序方式: 共有2764条查询结果,搜索用时 31 毫秒
91.
Drawing on institutional theory, this article articulates qualitative insights from a program of research on Canadian health technology‐based ventures to examine the rules that characterize economic policy, capital investment, and regulatory approval as well as the way these institutions enable and constrain the development of ventures at an early stage. Our findings clarify how economic policy integrates these ventures into the entrepreneurial domain, how capital investment configures them for economic value extraction, and how regulatory approval fully releases their market value. These findings help to revisit current policy modernization initiatives by calling attention to the convergence among the three institutions. Rather than operating solely as a source of constraints, these institutions provide a highly integrated market‐oriented space for health technology‐based entrepreneurial activities to unfold.  相似文献   
92.
Regulatory reforms to public infrastructure services across European Union (EU) countries were aimed at increasing consumer welfare by introducing competition and choice into service markets. However, empirical evaluations have questioned whether these reforms have benefitted all consumers, suggesting that vulnerable groups of service users (especially those with lower levels of formal education), might be locked into poorly performing services. We assess the relationship between the level of competition in electricity and fixed telephony markets in EU countries and evaluate the affordability of these services for different socio‐educational layers. Our findings show that – although in countries where there is a relatively high frequency of switching, inequalities between socio‐educational groups are smaller and eventually disappear – competition as such does not play a part. These results suggest that demand‐side regulation that successfully enables consumer switching has the potential to equalize social welfare, thereby reflecting a possible convergence of regulatory instruments and the central aims of the welfare state in this context.  相似文献   
93.
Individuals are the single largest source of campaign contributions, yet we know little about their motivations. For instance, the existing literature questions whether individual contributors sophisticatedly differentiate among candidates according to policy positions, particularly among same‐party candidates. We analyze this issue by combining data from a new survey of over 2,800 in‐ and out‐of‐state donors associated with the 2012 Senate elections, FEC data on contributors’ professions, and legislative records. Three major findings emerge. First, policy agreement between a donor's positions and a senator's roll calls significantly influences the likelihood of giving, even for same‐party contributors. Second, there is a significant effect of committee membership corresponding to a donor's occupation; this holds even for donors who claim that other motivations dominate, but it does not appear to be motivated by an expectation of access. Third, conditional upon a donation occurring, its size is determined by factors outside a legislator's control.  相似文献   
94.
95.
96.
Abstract

We used survey and ethnographic data to study savings in a highly autarkic society of native Amazonians in Bolivia (Tsimane’). We equated savings with the amount of maize and rice in storage, area planted with plantains and manioc, and number of edible domesticated animals owned by a household or an adult. We found no large inter-annual change in savings possibly due to low income, impulsivity and a bundle of institutions and norms, such as borrowing, theft and reciprocity norms. The bundle attenuates the need for household formal savings at the periphery of markets.  相似文献   
97.
ABSTRACT

Although India’s cotton sector has been penetrated by various input- and capital-intensive methods, penetration by herbicide has been largely stymied. In Telangana State, the main obstacle has been the practice of ‘double-lining’, in which cotton plants are spaced widely to allow weeding by ox-plow. Path dependency theory primarily explains the persistence of sub-optimal practices, but double-lining is an example of an advantageous path for cash-poor farmers. However, it is being actively undermined by parties intent on expanding herbicide markets and opening a niche for next-generation genetically modified cotton. We use the case to explicate the role of treadmills in technology ‘lock-in’. We also examine how an adaptive locked-in path may be broken by external interests, drawing on recent analyses of ‘didactic’ learning by farmers.  相似文献   
98.
Abstract

This discussion stresses that looking at countries on the margins of European colonial rule can be useful when considering the wider dynamics of the present, reflecting the persistence of colonial discourses and how racism “endures”. Iceland’s colonial experience was characterized by duality, in which the country was an object of colonialism, while actively participating in the racist discourses predominant in Europe at that time. This paper demonstrates how Iceland’s long association with the exotic and its gendered manifestations is currently being perpetuated by the tourist and state industries, under the influence of neo-liberal ideas about nation branding. When contextualized within the larger geopolitical environment, Iceland as an “exotic” destination unravels the racist and colonized narratives still at play within a wider geopolitical context.  相似文献   
99.
Racialization is a constant process of “doing race”. Critical whiteness studies make efforts to address the silencing of whiteness in mainstream white feminism. In this article memory work is explored as a possible method for studies of whiteness as an unmarked majority position. The focus is on methodological practices or “how‐to‐do” questions. Starting from feminist epistemology the author investigates ways of practising the epistemological standpoint of situated knowledges. Feminist epistemology, despite its disagreements, has pointed to the importance of positioning work for scientific knowledge production. The relationship between racialization as an analytical concept and whiteness as dominant majority position is complicated. Usually memory work is employed to address gender or more specifically femininity, but, as argued here, it is well suited to investigations of racialization, too. The analysis shows that silent avoidance of matters associated with whiteness helps keep the majority position in place; whiteness is co‐produced with silence through avoidance in concrete everyday situations. Despite a number of problematic aspects, memory work proved productive in bridging the gap between an epistemological standpoint and the nitty‐gritty work of doing empirical research. It helped clarify racialization as a relational phenomenon and shows how lack of attention to or awareness of race has implications for scientific knowledge production.  相似文献   
100.
Since the 1980s, regulated markets and New Public Management have been introduced in the public sector across the world. How they have affected existing governance mechanisms such as self‐regulation and state regulation has remained largely unexplored, however. This article examines the origins and consequences of institutional layering in governing healthcare quality. Dutch health care, where a market‐based system has been introduced, is used as a case study. The results show that this market‐based system did not replace but modified existing institutional arrangements. As a result, hospitals have to deal with the fragmentation of quality demands. Using the concept of institutional layering, this study shows how different arrangements interact. As a consequence, the introduction of a certain policy reform will work out differently in different countries and policy sectors. Our ‘archaeological’ study in this layering can be seen as an example of how such incremental change can be studied in detail.  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