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   1337篇
  免费   56篇
管理学   182篇
民族学   21篇
人才学   1篇
人口学   152篇
丛书文集   2篇
理论方法论   122篇
综合类   29篇
社会学   578篇
统计学   306篇
  2024年   2篇
  2023年   20篇
  2022年   16篇
  2021年   36篇
  2020年   67篇
  2019年   87篇
  2018年   109篇
  2017年   105篇
  2016年   89篇
  2015年   49篇
  2014年   69篇
  2013年   219篇
  2012年   98篇
  2011年   46篇
  2010年   46篇
  2009年   45篇
  2008年   37篇
  2007年   30篇
  2006年   32篇
  2005年   29篇
  2004年   19篇
  2003年   15篇
  2002年   15篇
  2001年   15篇
  2000年   8篇
  1999年   8篇
  1998年   13篇
  1997年   9篇
  1996年   13篇
  1995年   10篇
  1994年   6篇
  1993年   2篇
  1992年   6篇
  1991年   2篇
  1990年   1篇
  1989年   1篇
  1988年   1篇
  1987年   3篇
  1986年   1篇
  1985年   2篇
  1984年   2篇
  1983年   1篇
  1979年   1篇
  1978年   1篇
  1975年   1篇
  1974年   1篇
  1973年   1篇
  1971年   1篇
  1969年   1篇
  1968年   2篇
排序方式: 共有1393条查询结果,搜索用时 46 毫秒
991.
This study explored how different ecological factors, within and outside the family, affected the educational success of the children of undocumented families. The sample consisted of 63 immigrant Latino parents (40 families) who resided in North Central Indiana. This study utilized an ethnographic research design. Findings demonstrated that immigration laws were affecting the educational success of the children of undocumented families. Most parents expressed lack of familiarity of the American educational system and that they had culture and language barriers. Findings also demonstrated that undocumented families were adapting to their realities, as a result of the resiliency in their families and communities. Implications for practice and future research were provided.  相似文献   
992.
This article will discuss issues important in psychotherapy with Latinos with HIV/AIDS in New York City. The various levels of oppressed group membership wilt be discussed as they relate to a therapeutic understanding of the mental health needs of Latinos. A case study will be used to demonstrate the clinical applications of the Model of Multiple Oppression.  相似文献   
993.
Little is known about the relationship between neuropsychological functioning and normal personality in sex offenders. The aim of this study was to examine the relations between personality traits and executive functioning in child molesters. The NEO-Five Factor Inventory was used to assess personality, and the Trail Making Test (parts A and B) was used to assess executive functioning in a sample of child molesters (n?=?33). We found the time required to complete Trail Making Test part A significantly predicted Extraversion scores, whereas the time to complete Trail Making Test part B significantly predicted Openness scores. Brief measures of executive functioning can thus predict the score in Extraversion and Openness in child molesters. These personality traits may be related to the functioning of brain areas implicated in having to complete the Trail Making Test.  相似文献   
994.
This article analyzes popular narratives surrounding the theme of drug lords in the Mexican border city of Juarez and their multifaceted social, ideological, and material effects. This analysis takes into consideration the historical context of eruptions of violence that Juarez has endured in the last few years. Complex formations of the Mexican identity are now being reformulated in hierarchical, gendered, and racialized identities, which project the very strong and powerful social frictions currently emerging from complex socioeconomic factors resulting in mass poverty and migration. These elements are evinced in the narco-narratives within their violent contexts. However, violence in Juarez must not be interpreted as upsurges outside the control of the state, but rather as byproducts of conflict within it (see Das and Poole 2004). Thus, on the border, Juarez becomes a central site, not a periphery, in which economic and political forces materialize in the middle of complex social dynamics.  相似文献   
995.
Anurans are excellent site-specific bioindicators. Although urbanization imposes diverse threats to wildlife species, little is known about its effect on tropical anurans. In this study we assessed the response of anurans to different conditions within an urban area (i.e. highly developed intra-urban residential areas, highly developed peri-urban residential areas, intra-urban abandoned lots, waterway). Our results show that: (1) 36 % of the regional anuran species pool was found within the boundaries of the studied city, (2) species richness peaked in highly developed peri-urban areas, (3) anuran abundance scores were highest in abandoned lots, and (4) highest similarity was found between the anuran community from highly developed peri-urban areas and abandoned lots. Although this study was carried out in a single city, and we only recorded four species, our results suggest that the urban semi-permeability process occurs for anuran communities, plus the fact that abandoned lots seem to offer better breeding habitat for anurans than a polluted waterway.  相似文献   
996.
Bogotá, the capital of the Republic of Colombia, is a tropical highland city located 2,650 m above sea level. It is the 25th largest city in the world and, among large cities, is also one of the highest. In common with other cities in Latin America, a large part of its urban growth during recent centuries has been unplanned and informal. The introduction of green spaces into urban planning in Bogotá began in the mid-20th century, but was first included in official legislation during the 1990s through the concept of Ecological Main Structure (EMS). Initially developed by Dutch scholars, EMS was brought to Colombia via biological conservation practitioners as a means of enhancing biological connectivity in rural and natural landscapes, extended in this case to urban landscapes as a top-level planning instrument. EMS originally included a variety of components, from protected areas and biological conservation tools to environmental urban elements - the emphasis being on biodiversity conservation, without sufficient recognition of specific urban structures and functions. This process led to conceptual disciplinary-based divergence and conflicting political interpretations. The current emergence of EMS as a planning tool for urban regions represents an opportunity for integration, although the risk of divergent interpretations remains, as no integrative conceptual framework has yet been developed. In this paper we review the concepts underlying EMS that have been incorporated within urban and regional planning, especially those of ecological networks and green infrastructure, and also diagnose conceptual and institutional barriers to its current integration, challenges and opportunities which are set in the context of an emerging urban region. We propose a trans-disciplinary framework for multi-level integration of EMS, along a gradient from wild environments to built structures that incorporates emerging concepts such as urban biodiversity, ecosystem services and design in the urban landscape, with the aim of contributing to the creation of an urban landscape that is resilient to environmental change and suitable for human well-being and adaptation.  相似文献   
997.
This article provides a cultural-historical (CHAT) analysis of the practices used by an effective teacher of Latino/a children previously classified as “underachieving” and “beginning/novice” English Language Learners. Although the teacher would not describe her practices in strict CHAT, or sociocultural theory (SCT) terms, our analysis shows that teaching practices in this classroom are better understood using a SCT model rather than more prevalent second language acquisition (SLA) models that dominate the field of bilingual/English as a Second Language education. We describe the fundamental limitations of SLA assumptions about learners vis-à-vis a SCT perspective and use classroom and case study data to illustrate how a CHAT perspective illuminates this teacher's practices. From a CHAT perspective, teaching and learning are socially reorganized around the mediation of dynamic learner identities and include shifts in expert–novice status, dialogic interactions, and the use of innovative mediational tools (e.g., keystrokes on a calculator) to promote academic writing and oral communication. The mediational reorganization described in the classroom opened up access to students who might have been dismissed by a SLA model as “incapable” of engaging in such tasks. We draw on classroom-level data (i.e., standardized scores in reading and math) as well as the work of selected focal students to illustrate our case.  相似文献   
998.
Dominated by intracultural comparisons between adopted and nonadopted children, adoption research has until now paid little attention to cross-cultural differences in the adoptees’ behavioral and socioemotional adjustment. The present study is aimed at comparing children adopted in two different countries—Italy and Spain—and at verifying, through their parents’ perceptions, the extent to which cultural context may contribute to shaping children's emotional and behavioral problems. A sample of 207 international adoptees (127 Italian and 80 Spanish) aged between 6 and 14 years was studied. The children's adjustment was assessed using the Child Behavior Checklist, which was filled out by the adoptive parents. Results indicated the presence of more similarities than differences between Italian and Spanish subjects: children adopted both in Italy and Spain between 3 and 5 years old were more likely to exhibit behavior problems than were children who entered the adoptive family at any other age. Some differences related to the birth country also emerged.  相似文献   
999.
Objective.?The aim of the present study was to analyse the effect of testosterone therapy on bone mineral density in healthy elderly men who had low levels of total testosterone.

Design.?Randomized, double-blind, placebo-controlled study.

Participants.?Forty-eight men over 60 years old with decreased testosterone levels (≤320 ng/dL) comprised the study. Twenty-five out of 48 received intramuscular injections of testosterone enanthate every three weeks during 12 months; the remaining 23 participants formed the control group. All participants had measurements of bone mineral density (BMD) in both lumbar spine and hip before and at the end of the study as well as testosterone and 17-β estradiol levels.

Results:?Testosterone treated group exhibited a significant (p < 0.05) increment (from 1.198 ± 0.153 to 1.240 ± 0.141 g/cm2) in lumbar BMD in parallel with a significant (p < 0.001) increment (from 301 ± 32 to 471 ± 107 ng/dL) in testosterone concentrations, whereas no significant change occurred in femoral neck BMD.

Conclusions.?Testosterone therapy elicited a positive effect only in lumbar BMD in elderly men with diminished testosterone serum levels.  相似文献   
1000.
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