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   602篇
  免费   43篇
各国政治   43篇
工人农民   92篇
世界政治   53篇
外交国际关系   30篇
法律   285篇
中国政治   7篇
政治理论   131篇
综合类   4篇
  2024年   1篇
  2023年   7篇
  2022年   7篇
  2021年   9篇
  2020年   29篇
  2019年   30篇
  2018年   32篇
  2017年   42篇
  2016年   42篇
  2015年   35篇
  2014年   34篇
  2013年   91篇
  2012年   24篇
  2011年   27篇
  2010年   18篇
  2009年   26篇
  2008年   26篇
  2007年   25篇
  2006年   17篇
  2005年   11篇
  2004年   10篇
  2003年   12篇
  2002年   16篇
  2001年   7篇
  2000年   14篇
  1999年   5篇
  1998年   5篇
  1997年   1篇
  1996年   7篇
  1995年   2篇
  1994年   3篇
  1993年   5篇
  1992年   3篇
  1991年   3篇
  1990年   1篇
  1989年   1篇
  1988年   1篇
  1986年   3篇
  1985年   2篇
  1984年   1篇
  1983年   1篇
  1981年   2篇
  1968年   1篇
  1967年   1篇
  1965年   1篇
  1963年   2篇
  1961年   2篇
排序方式: 共有645条查询结果,搜索用时 15 毫秒
511.
Abstract

African poverty statistics depend on household-level measurements from survey data, making the definition of household of critical importance. Detailed case studies from Tanzania and Burkina Faso explore (1) understandings of household membership and ambiguities, and (2) how well survey definitions capture households as economic units, and the implications for household size and responses to and mitigation of poverty. We develop an analytic framework of ‘open’ and ‘closed’ households. ‘Open’ households cope with poverty using flexibility, movement and extra-household networks, but are poorly represented by survey data. Closed households are likely to be better described by survey data.  相似文献   
512.
Oil and gas discoveries spurred expectations of economic growth and employment in Ghana. The demand for labour is however limited within offshore petroleum extraction. Employment generation therefore depends on the development of an onshore oil and gas service sector. This study examines the strategies adopted by local entrepreneurs in the ‘oil city’ of Takoradi, focusing on the gendered nature of their activities, skills, networks and capital sources. I argue that the petroleum industry’s male dominance and international standards requirements, coupled with gender constraints regarding work and access to relevant resources, limit female entrepreneurs’ creation of employment in this emerging sector.  相似文献   
513.
Picking up the question of what FLaK might be, this editorial considers the relationship between openness and closure in feminist legal studies. How do we draw on feminist struggles for openness in common resources, from security to knowledge, as we inhabit a compromised space in commercial publishing? We think about this first in relation to the content of this issue: on image-based abuse continuums, asylum struggles, trials of protestors, customary justice, and not-so-timely reparations. Our thoughts take us through the different ways that openness and closure work in struggles against violence, cruel welcomes, and re-arrangements of code and custom. Secondly, we share some reflections on methodological openness and closure as the roundtable conversation on asylum, and the interview with Riles, remind us of #FLaK2016 and its method of scattering sources as we think about how best to mix knowledges. Thirdly, prompted by the FLaK kitchen table conversations on openness, publishing and ‘getting the word out’, we respond to Kember’s call to ‘open up open access’. We explain the different current arrangements for opening up FLS content and how green open access, the sharedit initiative, author request and publisher discretion present alternatives to gold open access. Finally drawing on Franklin and Spade, we show how there are a range of ‘wench tactics’—adapting gifts, stalling and resting—which we deploy as academic editors who are trying to have an impact on the access, use and circulation of our journal, even though we do not own the journal we edit. These wench tactics are alternatives to the more obvious or reported tactic of resignation, or withdrawing academic labour from editing and reviewing altogether. They help us think about brewing editorial time, what ambivalence over our 25th birthday might mean, and how to inhabit painful places. In this, we respond in our own impure, compromised way to da Silva’s call not to forget the native and slave as we do FLaK, and repurpose shrapnel, in our common commitments.  相似文献   
514.
As states have upgraded their commitment to pre‐K education over the past two decades, questions have arisen. Critics argue that program effects are likely to fade out or disappear over time, while supporters contend that program effects are likely to persist under certain conditions. Using data from Tulsa Public Schools, three neighboring school districts, and the state of Oklahoma, and propensity score weighting, we estimate the effects of Tulsa's universal, school‐based pre‐K program on multiple measures of academic progress for middle school students. We find enduring effects on math achievement test scores, enrollment in honors courses, and grade retention for students as a whole, and similar effects for certain subgroups. We conclude that some positive effects of a high‐quality pre‐K program are discernible as late as middle school.  相似文献   
515.
ABSTRACT

How do we study social media technology? While social semiotics provides an extensive toolkit for analysing multimodal texts and semiotic practices, the study of social media as semiotic technology poses a significant challenge to existing research methodologies. In this article, we present a social semiotic framework that allows us to describe in analytical details the multimodal meaning potentials offered by digital social media technology and connect these to multimodal text-making and semiotic practices while underscoring the role of technology. Our framework is organized around seven interrelated and inherently informed dimensions: (1) multimodality, (2) practice, (3) the social, (4) medium, (5) the material, (6) the historical, and (7) the critical. This framework could pertain to most types of semiotic technologies, but will here be developed for accounting for social media technologies, and its viability will be illustrated with examples from Instagram. By developing this framework, we aim at elaborating the theoretical basis and analytical tools of social semiotics, and thereby contributing to bringing forward increased understanding of how social media technology enables making, enacting and managing meaning.  相似文献   
516.
517.
518.
519.
Morphological changes in the width of latent fingermark ridges occur naturally over time. This could be used to examine the aging process of latents and eventually estimate time of deposition. In a crime context, it is common practice to compare a questioned (aged) fingermark with a database of known (inked) prints. Therefore, in the absence of fresh fingermarks for aging purposes, it is of interest to reveal correlations between these two categories of fingerprints with regard to the widths of their ridges. The present study explores correlations of ridge widths between flat and rolled inked prints with latent fingermarks visualized with carbon black (CB) and titanium dioxide (TiO2)-based powders among a small population of ten donors. Results revealed consistent differences between the ridge widths of latent and inked prints as well as flat and rolled impressions. Latent fingermarks visualized with CB and TiO2 powders showed ridges with comparable widths.  相似文献   
520.
Previous analyses of data from the 4-H Study of Positive Youth Development (PYD) have examined concurrent trajectories of positive development and risk/problem behaviors among adolescents, finding complex and not necessarily inverse relationships among them. In this article, we expand on prior research by employing a person-centered approach to modeling risk behaviors, assessing development from approximately 6th grade through 12th grade among 4,391 adolescents (59.9 % female). Latent profiles involving the problematic behaviors of delinquency, depressive symptoms, substance use, sexual activity, disordered eating behaviors, and bullying were then assessed for concurrent relationships with the Five Cs of PYD: Competence, Confidence, Character, Caring, and Connection. We found six latent profiles, based primarily on mental health, aggression, and alcohol use, with significant differences in Confidence levels among many of the profiles, as well as some differences in the four other Cs. We discuss directions for future research and implications for application to youth policies and programs.  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