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   1085篇
  免费   45篇
管理学   127篇
民族学   9篇
人口学   88篇
丛书文集   4篇
教育普及   1篇
理论方法论   123篇
综合类   7篇
社会学   655篇
统计学   116篇
  2023年   10篇
  2021年   6篇
  2020年   15篇
  2019年   40篇
  2018年   32篇
  2017年   42篇
  2016年   36篇
  2015年   23篇
  2014年   38篇
  2013年   177篇
  2012年   30篇
  2011年   42篇
  2010年   26篇
  2009年   24篇
  2008年   23篇
  2007年   31篇
  2006年   29篇
  2005年   30篇
  2004年   33篇
  2003年   22篇
  2002年   29篇
  2001年   30篇
  2000年   21篇
  1999年   27篇
  1998年   15篇
  1997年   15篇
  1996年   21篇
  1995年   17篇
  1994年   13篇
  1993年   19篇
  1992年   18篇
  1991年   17篇
  1990年   15篇
  1989年   12篇
  1988年   9篇
  1987年   13篇
  1986年   20篇
  1985年   11篇
  1984年   8篇
  1983年   7篇
  1982年   8篇
  1981年   9篇
  1980年   5篇
  1979年   11篇
  1978年   7篇
  1977年   4篇
  1976年   8篇
  1975年   6篇
  1973年   6篇
  1970年   4篇
排序方式: 共有1130条查询结果,搜索用时 125 毫秒
991.
This study is based on the reports of 384 adults who were abused physically, sexually, and/or emotionally in childhood by family members. It describes the survivors' attempts, as children, to get help by disclosing the abuse to someone who might intervene; those who did not disclose explain their reasons. The results indicate that disclosure usually did not bring an end to the abuse, and that little action was taken to control the perpetrator, even after disclosure took place. The responses received by the children to their disclosure are linked to their levels of self-esteem and family functioning as adults.  相似文献   
992.
993.
Experimental data from the Chemical Industry Institute of Toxicology (CIIT) are used to estimate the risk of squamous cell carcinoma of the nasal cavity in Fischer 344 (F344) rats over a range of ambient air concentrations of formaldehyde that includes current exposure guidelines for the workplace and home. These values are presented as a best estimate envelope obtained from five mathematical dose-response formulation. The response of Sprague-Dawley (SD) rats dosed at 15 ppm in a separate study at New York University is consistent with the predicted lifetime response for F344 rats at a slightly lower concentration (13-14 ppm). A dose-related mortality effect beyond what is attributable to the occurrence of nasal carcinomas is found in F344 rats at all CIIT exposure levels (2, 6, and 15 ppm). There is no evidence of a mortality effect in B6C3F1 mice of the CIIT study, and data for SD rats of the NYU experiment are inconclusive. In the CIIT study, rats exposed to 15 ppm exhibited a high incidence of nasal cavity squamous cell carcinomas and polypoid adenomas. Polypoid adenomas were also observed with increased incidences at 2 ppm and 6 ppm. Statistical comparisons with matched controls, and the low historical rate of spontaneous occurrence both suggest that polypoid adenomas may be a risk to F344 rats at exposure levels below the current Occupational Safety and Health Administration (OSHA) standard of 3 ppm. Squamous cell carcinomas were observed in two mice exposed to 15 ppm. This finding may be biologically significant since this tumor is rare and has not been previously reported in 4932 untreated B6C3F1 mice from recent National Toxicology Program (NTP) feeding studies.  相似文献   
994.
995.
Graduate students simulated school board members making decisions about educational programs. Situation contexts within the program evaluation reports were varied by conflict (high, low), quality (high, low), and time (long, short). Analyses of Variance (ANOVA) of the qualitative measures m the 2 × 2 × 2 factorial design indicated significant results at the .01 level. The quality of decisions affect support for program continuation. Interactions of conflict and quality affected need for more information and more time in decision making. A conflict and time interaction affected preference to talk to other board members. Changes in situational contexts affected information need and use in small, decision making groups.  相似文献   
996.
The nature of lexical and structural borrowing has been at the forefront of sociolinguistic debates for many years. This study analyzes bilingual lexemes and morphemes of English–origin loanwords from a Louisiana corpus of twenty–two French/English speakers. French Louisiana, however, has been undergoing language shift from French to English for three generations and, as a consequence, language dominance is in a parallel state of shift. This competing dominance produces borrowings characterized by a range of phonological integration coupled with bound morphemes from both languages. These data suggest that examining borrowing beyond the word level reveals a highly complex interplay of often competing and overlapping grammars.  相似文献   
997.
With the official designation of micropolitan areas in June 2003, as part of the new core-based statistical area system, non-metropolitan territory is no longer an undifferentiated residual. In this paper we compare the demographic and socioeconomic characteristics of a preliminary set of micropolitan areas with more highly urbanized territory and with territory outside core-based statistical areas, to answer questions about the micropolitan category's conceptual validity. Demographic and economic data are used, along with a mail survey of county officials in a random sample of small metropolitan, micropolitan, and non-core-based statistical areas (non-CBSAs). The analysis shows substantial differentiation between micropolitan and non-CBSA areas, and demonstrates the importance of distinguishing between these two types of non-metropolitan areas. As an intermediate category, micropolitan areas provide stability to the decade-to-decade swings in non-metropolitan population change during periods of higher out-migration, but share almost equally with non-CBSA areas in attracting migrants during periods of high non-metropolitan in-migration. In terms of services available and their function as urban centers, micropolitan areas are intermediate between small metropolitan and non-CBSA areas, but more similar to small metropolitan areas.  相似文献   
998.
999.
1000.
A Coyne  M E Brown 《Child welfare》1986,65(2):189-198
There were few differences between developmentally disabled foster children and those who were adopted. The foster children as a group were slightly older and more likely to have intact biological families who continued to maintain contact with them. More differences were found in the agencies' structures and practices. The major problem areas identified during the site visits appeared to be within the child welfare system itself, specifically at the interface between foster care and adoption. Bridging mechanisms were needed between units to temper the differences in perception, values, role expectations, and decision-making criteria used by the specialized staffs. When bridging mechanisms were in place, specialization of function was related to increased effectiveness in placing developmentally disabled children for adoption.  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