全文获取类型
收费全文 | 8274篇 |
免费 | 238篇 |
专业分类
各国政治 | 434篇 |
工人农民 | 231篇 |
世界政治 | 563篇 |
外交国际关系 | 405篇 |
法律 | 5024篇 |
中国共产党 | 1篇 |
中国政治 | 23篇 |
政治理论 | 1730篇 |
综合类 | 101篇 |
出版年
2020年 | 88篇 |
2019年 | 116篇 |
2018年 | 154篇 |
2017年 | 184篇 |
2016年 | 210篇 |
2015年 | 147篇 |
2014年 | 165篇 |
2013年 | 917篇 |
2012年 | 230篇 |
2011年 | 239篇 |
2010年 | 191篇 |
2009年 | 198篇 |
2008年 | 231篇 |
2007年 | 198篇 |
2006年 | 216篇 |
2005年 | 184篇 |
2004年 | 190篇 |
2003年 | 193篇 |
2002年 | 187篇 |
2001年 | 318篇 |
2000年 | 301篇 |
1999年 | 237篇 |
1998年 | 97篇 |
1997年 | 117篇 |
1996年 | 88篇 |
1995年 | 88篇 |
1994年 | 97篇 |
1993年 | 95篇 |
1992年 | 164篇 |
1991年 | 189篇 |
1990年 | 169篇 |
1989年 | 180篇 |
1988年 | 153篇 |
1987年 | 149篇 |
1986年 | 165篇 |
1985年 | 137篇 |
1984年 | 129篇 |
1983年 | 136篇 |
1982年 | 83篇 |
1981年 | 78篇 |
1980年 | 62篇 |
1979年 | 113篇 |
1978年 | 67篇 |
1977年 | 65篇 |
1976年 | 58篇 |
1975年 | 70篇 |
1974年 | 85篇 |
1973年 | 76篇 |
1972年 | 70篇 |
1971年 | 60篇 |
排序方式: 共有8512条查询结果,搜索用时 15 毫秒
271.
Leadership of public universities has come under fire—from scandals, from funding, from students, from every direction. Top‐down leadership of institutions of higher education has been described as a “disease.” Shared governance—a mechanism of faculty representation in the leadership and decision‐making processes—a seeming alternative, has been described as “a recipe for paralysis.” In this article, the authors proffer shared leadership as a potential elixir for leading public institutions of higher learning, unleashing creative potential, focusing on pressing strategic imperatives, and enabling sustainable systems that leverage true talent to maximum effect. It is time to move beyond the moribund myth of top‐down heroic leadership and beyond the bureaucratic, political quagmire of the current state of affairs in shared governance. Is shared leadership the answer? 相似文献
272.
273.
HESTER M. VAN DE BOVENKAMP MARLEEN DE MUL JULIA G.U. QUARTZ ANNE MARIE J.W.M. WEGGELAAR‐JANSEN ROLAND BAL 《Public administration》2014,92(1):208-223
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
274.
This paper builds on work from the agrarian change and political ecology literatures to analyze the process of agrarian change among smallholder cotton farmers in southwestern Burkina Faso. Specifically, we use a rural survey of 72 heads of household in three villages to examine whether and how (1) access to agricultural inputs, (2) debt and (3) liberalization reforms combine to produce rural socio-economic differentiation based on wealth. We find that wealthier farmers use more mineral fertilizer and manure inputs than their poorer counterparts. Wealthier farmers are also better able to remain debt-free as cotton prices drop and input prices rise. Moreover, they are able to take advantage of the neo-liberal restructuring of cotton cooperatives to change polices on debt repayment and input provisioning to their favor. This growing divide has large implications for rural food security, particularly as land becomes scarcer, fallows disappear and the need to intensify production grows. This research addresses two gaps in the agrarian change literature in relating how liberalization reforms and biophysical elements drive rural socio-economic differentiation. This work also shows that merging the concerns of political ecology with the agrarian change literature allows for a deeper examination of rural socio-economic differentiation. 相似文献
275.
This study examined the mediated and moderated effects of a universal family-focused preventive intervention, delivered during young adolescence, on internalizing symptoms assessed in young adulthood. Sixth grade students (N=446; 52% female; 98% White) and their families from 22 rural Midwestern school districts were randomly assigned to the experimental conditions in 1993. Self-report questionnaires were administered at seven time points (pre-test to young adulthood-age 21) to those receiving the Iowa Strengthening Families Program (ISFP) and to the control group. Results showed that growth factors of adolescent internalizing symptoms (grades 6-12) were predicted by ISFP condition and risk status (defined as early substance initiation). Moderation of the condition effect by risk status was found, with higher-risk adolescents benefitting more from the ISFP. Results also supported the hypothesis that the ISFP's effect on internalizing symptoms in young adulthood was mediated through growth factors of adolescents' internalizing symptoms; risk moderation, however, was only marginally significant in young adulthood. The relative reduction rate on clinical or subclinical levels of young adult internalizing symptoms was 28%, indicating that for every 100 young adults displaying clinical or subclinical levels of internalizing symptoms from school districts not offering an intervention, there could be as few as 72 displaying those levels of symptoms in school districts that offered middle school prevention programming. These findings highlight how the positive effects of family-focused universal interventions can extend to non-targeted outcomes and the related potential public-health impact of scaling up these interventions. 相似文献
276.
Research has linked the role of education to delinquency, but much of the focus has been on general population samples and
with little attention to demographic differences. Employing a cumulative disadvantage framework that integrates elements of
informal social control and labeling theories, this article examines whether academic achievement serves as a positive turning
point and re-directs juvenile delinquents away from subsequent offending. Attention is also given to race/sex contingencies.
Using a sample of 4,147 delinquents released from Florida correctional institutions (86% male, 57% non-White, average age
at release = 16.8 years), propensity score analysis yielded two findings: youth with above average academic achievement while
incarcerated were significantly more likely to return to school post-release, and youth with above average attendance in public
school were significantly less likely to be re-arrested in the 1-year post-release period. While the academic gains were pronounced
among African-American males, the preventive effects of school attendance are similar across race and sex, suggesting that
education can be a part of a larger prevention effort that assists juvenile delinquents in successful community re-entry. 相似文献
277.
278.
279.
The positive youth development perspective, a strength-based relational developmental systems model that focuses on mutually influential relationships between individuals and contexts, has been used to study thriving across the second decade of life. However, more attention has been paid empirically to identifying the features of the individual (e.g., intentional self regulation, hope, or purpose) or to enumerating the role of context-general ecological assets than to the nature of individual-context relationships linked to thriving within specific contexts. The goal of this special section is to provide initial research reports about context-specific instances of the thriving process. The research focuses on two contexts where many youth spend a considerable amount, and often the majority, of their time—school and out-of-school time sports activities. 相似文献
280.
Nanette S. Danielsson Allison G. Harvey Shane MacDonald Markus Jansson-Fröjmark Steven J. Linton 《Journal of youth and adolescence》2013,42(8):1223-1233
Depression is a common and debilitating disorder in adolescence. Sleep disturbances and depression often co-occur with sleep disturbances frequently preceding depression. The current study investigated whether catastrophic worry, a potential cognitive vulnerability, mediates the relationship between adolescent sleep disturbances and depressive symptoms, as well as whether there are gender differences in this relationship. High school students, ages 16–18, n = 1,760, 49 % girls, completed annual health surveys including reports of sleep disturbance, catastrophic worry, and depressive symptoms. Sleep disturbances predicted depressive symptoms 1-year later. Catastrophic worry partially mediated the relationship. Girls reported more sleep disturbances, depressive symptoms, and catastrophic worry relative to boys. The results, however, were similar regardless of gender. Sleep disturbances and catastrophic worry may provide school nurses, psychologists, teachers, and parents with non-gender specific early indicators of risk for depression. Several potentially important practical implications, including suggestions for intervention and prevention programs, are highlighted. 相似文献