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   1095篇
  免费   43篇
管理学   242篇
民族学   5篇
人口学   76篇
丛书文集   4篇
理论方法论   112篇
综合类   11篇
社会学   546篇
统计学   142篇
  2023年   12篇
  2022年   19篇
  2021年   10篇
  2020年   35篇
  2019年   28篇
  2018年   33篇
  2017年   45篇
  2016年   39篇
  2015年   36篇
  2014年   30篇
  2013年   182篇
  2012年   38篇
  2011年   35篇
  2010年   25篇
  2009年   22篇
  2008年   29篇
  2007年   51篇
  2006年   35篇
  2005年   34篇
  2004年   39篇
  2003年   27篇
  2002年   25篇
  2001年   24篇
  2000年   17篇
  1999年   16篇
  1998年   15篇
  1997年   16篇
  1996年   18篇
  1995年   14篇
  1994年   16篇
  1993年   12篇
  1992年   12篇
  1991年   17篇
  1990年   13篇
  1989年   9篇
  1988年   8篇
  1987年   9篇
  1986年   7篇
  1985年   9篇
  1984年   3篇
  1983年   7篇
  1982年   11篇
  1981年   7篇
  1980年   11篇
  1979年   6篇
  1978年   8篇
  1977年   6篇
  1976年   5篇
  1975年   4篇
  1970年   2篇
排序方式: 共有1138条查询结果,搜索用时 296 毫秒
861.
862.
Primary caregivers play an important role in emotion socialization. Real‐time mother–daughter emotion socialization was examined in 45 mother–daughter dyads with early‐adolescent daughters (age = 11.80, SD = .27) at the first observation point. Maternal supportive emotion regulation and daughters' emotions were coded during two conflict discussions, 2 years apart. With multilevel survival analysis, the likelihood of maternal supportiveness was predicted both over time, between early and mid‐adolescence, and by daughters' pubertal status. Mothers were more likely to respond to daughters' negative and positive emotions with supportiveness for daughters whose pubertal maturation occurred relatively early. Results suggest that mothers adjust their socialization of daughters' emotions according to their daughters' pubertal development.  相似文献   
863.
High-profile media cases of sexual abuse may encourage disclosures of abuse from victims of unrelated assaults and also influence parental concerns, leading to increased emergency department visits. In the region of the study authors’ institution, there are two recent high-profile sexual abuse cases with media coverage: Earl Bradley, a Delaware pediatrician, and Jerry Sandusky, a Pennsylvania college football coach. This is a retrospective cohort study of children evaluated for sexual abuse at a pediatric emergency department. Patients were classified as either presenting during a media period or non-media period. The media periods were one-month periods immediately following breaking news reports, when the cases were highly publicized in the media. The non-media periods were the 12-month periods directly preceding the first reports. The median number of emergency department visits per month during a non-media period was 9 visits (interquartile range 6–10). There were 11 visits in the month following the Sandusky case and 13 visits following the Bradley case. There was no statistical difference in number of emergency department visits for sexual abuse between the periods (= .09). These finding have implications regarding use of resources in pediatric EDs after high-profile sexual abuse cases.  相似文献   
864.
To improve understanding of human impacts on headwater stream condition, we quantified relationships between human, terrestrial landscape, and stream system variables in 29 central Iowa watersheds. Across study watersheds, between 0 and 100 % of total land area was characterized as “urban” (developed and barren land), whereas cultivated land constituted between 0 and 71 % of watershed area. Several variables were measured for each stream and associated watershed. Strengths of correlative relationships were used to select variables for path analysis, which we used to gain insight into factors affecting stream condition by evaluating direct and indirect effects of human system variables, terrestrial landscape variables, and physical stream variables on stream invertebrates. Results indicated that in predominantly urban watersheds, contaminant inputs to streams (measured by streamwater conductivity) negatively affected invertebrates, including EPT taxa (Ephemeroptera, Plecoptera, Trichoptera), and streamwater contaminant concentrations increased with impervious surface and human population density in the watershed. In rural watersheds, high streamwater nitrogen concentrations associated with cultivated land were related to declines in invertebrate taxon richness. Independent of land use, invertebrate abundance and taxonomic diversity were positively related to coarse substrate abundance on the streambed. Additionally, stream flow (discharge) increased with watershed area, which in turn increased invertebrate taxonomic diversity. Apparently, mechanisms responsible for human impacts on stream condition in central Iowa depend on dominant land use in the watershed. Additionally, stream ecosystems with high quality benthic habitat, and those located in large watersheds with greater flow, appear to be more resilient to land use effects.  相似文献   
865.
The Analysis of Verbal Behavior - Deficits in reporting past behavior may have implications for a child’s social development and safety. Behavioral interpretations of memory and research on...  相似文献   
866.
867.
ABSTRACT

In our digital information era, libraries have increasingly joined forces to act cooperatively through library consortia. Through membership in a consortium, a library can capitalize on programs like advocacy, joint purchasing, e-resource licensing, shared discovery platforms, etc. Resources saved through such efforts, including staff time and money, can then be deployed back into the library for other, mission-critical activities. Following the economic collapse of 2008, libraries needed more than ever to maximize exceedingly scarce budgets. In response, consortia began to push the envelope, exploring even deeper collaborations in an effort to minimize redundancies and maximize efficiencies. This article will look at some examples of cross-consortial collaboration and focus specifically on the ongoing efforts among the Legal Information Preservation Alliance (LIPA), the Mid-America Law Library Consortium (MALLCO), and the NELLCO Law Library Consortium (NELLCO) to achieve more robust cooperation across the three organizations. The authors are the three executive directors of the named organizations.  相似文献   
868.
Enquiry about childhood sexual abuse (CSA) is not routine practice for mental health practitioners undertaking client assessment. This study audited 100 patient charts to determine rates of enquiry and response by mental practitioners around CSA. Fifty-seven mental health staff also completed a subsequent questionnaire exploring factors that influence practice in regard to sexual abuse. Staff lacked confidence in how to ask and effectively respond to sexual abuse disclosure. Mandatory training focusing on trauma informed care could improve staff confidence and capacity to identify and effectively address not only sexual abuse, but childhood trauma and abuse more generally.  相似文献   
869.

Background

Midwifery education is the foundation for preparing competent midwives to provide a high standard of safe, evidence-based care for women and their newborns. Global competencies and standards for midwifery education have been defined as benchmarks for establishing quality midwifery education and practice worldwide. However, wide variations in type and nature of midwifery education programs exist.

Aim

To explore and discuss the opportunities and challenges of a global quality assurance process as a strategy to promote quality midwifery education.

Discussion

Accreditation and recognition as two examples of quality assurance processes in education are discussed. A global recognition process, with its opportunities and challenges, is explored from the perspective of four illustrative case studies from Ireland, Kosovo, Latin America and Bangladesh. The discussion highlights that the establishment of a global recognition process may assist in promoting quality of midwifery education programs world-wide, but cannot take the place of formal national accreditation. In addition, a recognition process will not be feasible for many institutions without additional resources, such as financial support or competent evaluators. In order to achieve quality midwifery education through a global recognition process the authors present 5 Essential Challenges for Quality Midwifery Education.

Conclusion

Quality midwifery education is vital for establishing a competent workforce, and improving maternal and newborn health. Defining a global recognition process could be instrumental in moving toward this goal, but dealing with the identified challenges will be essential.  相似文献   
870.
A decision regarding development and introduction of a potential new product depends, in part, on the intensity of compeitition anticipated in the marketplace. In the case of a technology-based product such as a personal computer (PC), the number of competing products may be very dynamic and consequently uncertain. We address this problem by modeling growth in the number of new PCs as a stochastic counting process, incorporating product entries and exits. We demonstrate how to use the resulting model to forecast competition five years in advance.  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