全文获取类型
收费全文 | 6731篇 |
免费 | 213篇 |
专业分类
管理学 | 805篇 |
民族学 | 35篇 |
人口学 | 709篇 |
丛书文集 | 23篇 |
教育普及 | 1篇 |
理论方法论 | 712篇 |
综合类 | 71篇 |
社会学 | 3408篇 |
统计学 | 1180篇 |
出版年
2023年 | 41篇 |
2021年 | 57篇 |
2020年 | 122篇 |
2019年 | 155篇 |
2018年 | 175篇 |
2017年 | 261篇 |
2016年 | 196篇 |
2015年 | 114篇 |
2014年 | 181篇 |
2013年 | 1075篇 |
2012年 | 218篇 |
2011年 | 219篇 |
2010年 | 167篇 |
2009年 | 150篇 |
2008年 | 199篇 |
2007年 | 187篇 |
2006年 | 220篇 |
2005年 | 168篇 |
2004年 | 172篇 |
2003年 | 132篇 |
2002年 | 161篇 |
2001年 | 172篇 |
2000年 | 172篇 |
1999年 | 162篇 |
1998年 | 129篇 |
1997年 | 108篇 |
1996年 | 111篇 |
1995年 | 83篇 |
1994年 | 87篇 |
1993年 | 104篇 |
1992年 | 109篇 |
1991年 | 110篇 |
1990年 | 91篇 |
1989年 | 90篇 |
1988年 | 70篇 |
1987年 | 78篇 |
1986年 | 71篇 |
1985年 | 86篇 |
1984年 | 82篇 |
1983年 | 78篇 |
1982年 | 50篇 |
1981年 | 43篇 |
1980年 | 45篇 |
1979年 | 53篇 |
1978年 | 42篇 |
1977年 | 36篇 |
1976年 | 36篇 |
1975年 | 35篇 |
1974年 | 42篇 |
1973年 | 31篇 |
排序方式: 共有6944条查询结果,搜索用时 15 毫秒
1.
2.
Oliveira Flávio G. Tapisso Joaquim T. von Merten Sophie Rychlik Leszek Fonseca Paulo J. Mathias Maria da Luz 《Urban Ecosystems》2021,24(5):851-862
Urban Ecosystems - The development of urban areas imposes challenges that wildlife must adapt to in order to persist in these new habitats. One of the greatest changes brought by urbanization has... 相似文献
3.
Theory and Society - The massive expansion of US higher education after World War II is a sociological puzzle: a spectacular feat of state capacity-building in a highly federated polity. Prior... 相似文献
4.
Aldaba Fernando T. 《Voluntas: International Journal of Voluntary and Nonprofit Organizations》2002,13(2):179-192
This paper discusses an emerging role for Philippine NGOs—building and maintaining intersectoral cooperation among various sectors of society to tackle key issues like agricultural development, HIV/AIDS, and agrarian reform. The three case studies elaborated in the paper show that Philippine NGOs play important intermediary and bridging functions crucial for the success of multistakeholder partnerships. NGOs are well equipped for this because of their middle-class and professional nature and because of various characteristics like autonomy, flexibility, and the ability to mobilize resources. 相似文献
5.
Susan D. Calkins Susan E. Dedmon Kathryn L. Gill Laura E. Lomax Laura M. Johnson 《Infancy》2002,3(2):175-197
A study sample of 162 six‐month‐old children was selected from a larger sample of 346 infants on the basis of parents' report of their infants' temperament and a laboratory assessment of temperament. Infants were classified as easily frustrated and less easily frustrated and compared on a number of emotion regulation, physiology, and temperament measures. Results indicated that male and female infants were equally likely to be classified as frustrated and less easily frustrated; however, male infants were less able to regulate physiologically. Easily frustrated infants used different emotion regulation strategies and were observed to be less attentive and more active than less easily frustrated infants when observed in the laboratory. These infants were also characterized by their parents as more active, less attentive, and more distressed to novelty. Infants classified as easily frustrated were more reactive physiologically and less able to regulate physiological reactivity than their less easily frustrated counterparts. It is hypothesized that this cluster of characteristics may constitute a unique temperamental type that may have implications for other types of behavioral functioning. Limitations of the study are that observations are based on a single brief assessment of the infant, modest effect sizes were found, and the study is cross‐sectional. 相似文献
6.
T. S. Ferguson 《Statistical Papers》1995,36(1):31-40
A class of symmetric bivariate uniform distributions is proposed for use in statistical modeling. The distributions may be
constructed to be absolutely continuous with correlations as close to±1 as desired. Expressions for the correlations, regressions
and copulas are found. An extension to three dimensions is proposed. 相似文献
7.
Susan Martin 《International migration (Geneva, Switzerland)》2002,40(3):59-70
Several Cooperative Efforts to Manage Emigration (CEME) members visited the Federal Republic of Yugoslavia (FRY) in early June 2001 to examine the new Government's approach to migration issues. We found that both the Federal Government and the Serb Republic are faced with three principal issues related to immigration and refugees that require substantial cooperation with North American and European countries that are donors of international aid, as well as recipients of Yugoslav migrants and third country nationals transiting the FRY.
First, they are faced with migration issues that the international community considers priorities, including demilitarizing border management; combating human smuggling and trafficking; and drafting and implementing an aliens law, which includes asylum policies and procedures consistent with international standards.
Second, they need to plan for the return or integration of 350,000 refugees from Croatia and Bosnia, and another 150,000 internally displaced Yugoslavs from Kosovo, primarily by offering dual citizenship in the FRY, and Croatia and Bosnia so refugees can integrate in the FRY, but retain rights and privileges according to Croatians or Bosnians.
Third, it is important to build bridges to Yugoslavs abroad in order to attract remittances and the return of the professionals needed to rebuild the FRY. 相似文献
First, they are faced with migration issues that the international community considers priorities, including demilitarizing border management; combating human smuggling and trafficking; and drafting and implementing an aliens law, which includes asylum policies and procedures consistent with international standards.
Second, they need to plan for the return or integration of 350,000 refugees from Croatia and Bosnia, and another 150,000 internally displaced Yugoslavs from Kosovo, primarily by offering dual citizenship in the FRY, and Croatia and Bosnia so refugees can integrate in the FRY, but retain rights and privileges according to Croatians or Bosnians.
Third, it is important to build bridges to Yugoslavs abroad in order to attract remittances and the return of the professionals needed to rebuild the FRY. 相似文献
8.
9.
The authors examined the relative contributions of both proximal and distal supports to the career interests and vocational self‐efficacy in a multiethnic sample (N = 139) of middle school adolescents. Consistent with Social Cognitive Career Theory, it was found that (a) vocational self‐efficacy and career planning/exploration efficacy consistently predicted young adolescents' career interests across Holland (J. L. Holland, D. R. Whitney, N. S. Cole, & J. M. Richards, 1969) themes; (b) gender and career gender‐typing predicted interests in Realistic, Investigative, and Social careers; and (c) perceived parent support accounted for 29% to 43% of the total unique variance in vocational self‐efficacy for all Holland theme careers. 相似文献
10.
Fred P. Piercy Douglas H. Sprenkle Susan H. McDaniel 《Journal of marital and family therapy》1996,22(2):163-179
The authors present three educational approaches designed to demystify the writing process and to support better writing skills among family therapists. One framework is an academic course in professional writing, another is a writing seminar for family therapy and physician trainees within a medical school setting, and the third is a 2-hour continuing education writing workshop for family therapists. Each is replicable within a variety of settings. 相似文献