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   16058篇
  免费   1139篇
  国内免费   118篇
管理学   466篇
劳动科学   2篇
民族学   306篇
人才学   4篇
人口学   306篇
丛书文集   1859篇
理论方法论   928篇
综合类   11634篇
社会学   1287篇
统计学   523篇
  2024年   20篇
  2023年   126篇
  2022年   204篇
  2021年   251篇
  2020年   301篇
  2019年   292篇
  2018年   330篇
  2017年   309篇
  2016年   317篇
  2015年   408篇
  2014年   847篇
  2013年   1120篇
  2012年   1077篇
  2011年   1237篇
  2010年   980篇
  2009年   918篇
  2008年   972篇
  2007年   1231篇
  2006年   1139篇
  2005年   1029篇
  2004年   880篇
  2003年   925篇
  2002年   702篇
  2001年   574篇
  2000年   337篇
  1999年   113篇
  1998年   46篇
  1997年   47篇
  1996年   43篇
  1995年   38篇
  1994年   23篇
  1993年   16篇
  1992年   14篇
  1991年   11篇
  1990年   6篇
  1989年   2篇
  1988年   3篇
  1985年   61篇
  1984年   80篇
  1983年   53篇
  1982年   52篇
  1981年   32篇
  1980年   48篇
  1979年   44篇
  1978年   50篇
  1977年   2篇
  1976年   1篇
  1975年   1篇
  1974年   1篇
  1973年   1篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
51.
In the current paper, we employ the most recent Programme for International Student Assessment (PISA) data to calculate a less-biased estimate of poverty on US achievement. The PISA was specifically chosen as it is an assessment removed from a specific curriculum and instead focuses on concepts that students should know in order to participate in a global economy. Using a propensity score matching approach, our findings suggest that US students in poverty have notable educational attainment deficiencies compared to a matched group of students who are not in poverty. In other words, when we select two students who have a great deal in common but for the fact that one comes from a poverty background, the student in poverty is expected to perform nearly 28 points, or about a quarter of a standard deviation lower, on the PISA assessment. In real terms, this puts math achievement for children not in poverty on-par with the Organisation for Economic Co-operation and Development (OECD) average, while children in poverty are well below the OECD average.  相似文献   
52.
Positive behavior intervention and supports (PBIS) is a thoroughly researched three-tiered framework for preventing and treating challenging behavior in schools. While more than 20 years of research contribute to the literature base, less is known about PBIS implementation in high-needs school settings, particularly those that serve students predominantly from low-income families and majority minority student populations across urban and rural districts. This study investigated the critical contextual factors of PBIS implementation from the stakeholder perspective. Specifically, we surveyed 161 participants including teachers, school staff members, and administrators who were PBIS team members and had received technical assistance in PBIS implementation. The completed surveys were analyzed with participants and their schools coded for district type, Title I funding, and position in order to determine how the perceptions of issues such as buy-in, administrator support, PBIS in secondary school settings, and poverty affect PBIS implementation and team needs. The factor analysis and resulting structure along with statistically significant results for each factor are presented along with implications.  相似文献   
53.
产业学院是应用型高校为服务地方社会经济的发展而与企业深度合作形成的新型办学机构,由高校和企业共同投资,实行理事会领导、院长负责的管理体制,校企协同育人,重视实践教学,组织特征鲜明,办学优势突出。但是,产业学院在发展过程中面临诸多不足:独立法人地位尚未确立,进一步发展缺乏法律保障和依据;现代治理方式和结构尚未建立,具体工作受高校干扰较多,行政化色彩浓厚;运行成本大,缺乏市场化运行机制。为了促进产业学院发展,国家应确立其独立的法律地位,营造发展的政策环境和建立现代化的治理方式与结构;产业学院应建立市场化运行机制,激发面对市场的应变能力,最大限度地发挥自身优势,化解发展过程中的短板。  相似文献   
54.
A stable money demand function is essential when using monetary aggregate as a monetary policy. Thus, there is need to examine the stability of the money demand function in Nigeria after the deregulation of the financial sector. To achieve this, the study employed CUSUM (cumulative sum) and CUSUMSQ (CUSUM of square) tests after using autoregressive distributive lag bounds test to determine the existence of a long run relationship between monetary aggregates and their determinants. Results of the study show that a long-run relationship holds and that the demand for money is stable in Nigeria. In addition, the inflation rate is found to be a better proxy for an opportunity variable when compared to interest rate. The main implication of the study is that interest rate is ineffective as a monetary policy instrument in Nigeria.  相似文献   
55.
The literature on preferences for redistribution has paid little attention to the effect of social mobility on the demand for redistribution and no systematic test of the hypotheses connecting social mobility and preferences for redistribution has yet been done to date. We use the diagonal reference model to estimate the effect of origin and destination classes on preferences for redistribution in a large sample of European countries using data from the European Social Survey. Our findings are consistent with the logic of acculturation in the sense that newcomers tend to adapt their views to those of the destination class at early stages and that upward and downward mobility do not have distinctive effects on the formation of political preferences. However, even though social origins seem to have a limited impact on preferences for redistribution, the evidence does not support the hypothesis that mobile and non‐mobile individuals are alike. We also find that the effect of social origin on preferences varies largely across countries. The empirical evidence leads to the conclusion that the effect of social origin on preferences for redistribution increases in contexts of strong familism.  相似文献   
56.
Cash‐for‐care (CfC) schemes are monetary transfers to people in need of care who can use them to organize their own care arrangements. Mostly introduced in the 1990s, these schemes combine different policy objectives, as they can aim at (implicitly or explicitly) supporting informal caregivers as well as increasing user choice in long‐term care or even foster the formalization of care relations and the creation of care markets. This article explores from a comparative perspective, how CfC schemes, within broader long‐term care policies, envision, frame, and aim to condition informal care, if different models of relationships between CfC and informal care exist and how these have persisted or changed over time and into which directions. Building on the scholarly debate on familialization vs. defamilialization policies, the paper proposes an analytical framework to investigate the trajectories of seven European countries over a period of 20 years. The results show that, far from being simply instruments of supported familialism, CfC schemes have contributed to a turn towards “optional familialism through the market,” according to which families are encouraged to provide family care and are (directly or indirectly) given alternatives through the provision of market care.  相似文献   
57.
借助文献研究和对比研究,在解释网络扶贫内涵的基础上,探讨了网络扶贫的实践特色。研究发现,网络扶贫能够推动扶贫思维的深层变革:从单向思维到互联网思维;助力扶贫对象的精准识别:从主观判断到科学界定;促进扶贫动力的内外融通:从外源救济到内生崛起;推进扶贫主体的系统升级:从单一分离到通力合作;优化扶贫路径的实践切入:从共性举措到个性特色;保障扶贫效果的稳定有序:从短期快速到长期持续。因此,在网络扶贫的过程中,既要注重提升网络扶贫主体的人力资本、加强农村互联网基础设施建设,又要注重构建网络扶贫信息服务体系、培育贫困地区特色产业,推进网络公益扶贫有序发展。  相似文献   
58.
Graduation model interventions represent a new wave of anti‐poverty programming that seeks to offer a sustainable pathway out of poverty. An expanding evidence base points towards positive economic outcomes at household level but little is known about impacts on child well‐being. This paper investigates children’s well‐being in Burundi during and after participation in a graduation model programme using a longitudinal mixed‐methods approach. The programme is found to improve child well‐being, particularly in relation to housing, food security and education. Covariate shocks undermine sustainability of effects but greater knowledge, experience and prioritisation of children’s needs contribute to harnessing improved outcomes.  相似文献   
59.
基于在大兴安岭南麓片区的田野调查,通过引入新内生发展理论,提出认同、赋权、创新、合作四要素是乡村振兴的核心动力。乡村振兴需要理性认知村落的命运,树立文化自信,提升主体对乡村“地域 文化”的认同感和归属感。要通过确权、赋能提升村民可行性能力,进而将内外资源相结合,因地制宜积极参与政策、组织、业务和技术等的创新实践活动。在乡村振兴过程中还要注意加强知识、部门、地区的联动。四要素的有机结合能够提升农牧民的主体地位,激活内外发展动力,对推动乡村振兴,实现乡村可持续发展具有重要意义。  相似文献   
60.
空气污染已成为我国最受关注的环境问题。文章利用灰色关联分析模型研究了天津市和邢台市大气污染源与污染物浓度的关系。基于2013年到2016年空气质量数据和社会经济数据,分析邢台和天津的大气污染物来源,邢台和天津大气主要污染源分别为工业、常住人口、农业、汽车保有量。研究发现,工业体系对邢台空气质量影响最大,常住人口对天津市空气质量影响最大。结果表明,影响不同城市空气质量的主要污染源并不一致。因此,不同地区在大气污染治理过程中应根据自身特点采取相应的措施。  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