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   365篇
  免费   14篇
管理学   66篇
民族学   5篇
人口学   14篇
理论方法论   47篇
综合类   2篇
社会学   199篇
统计学   46篇
  2023年   3篇
  2022年   1篇
  2021年   1篇
  2020年   6篇
  2019年   13篇
  2018年   12篇
  2017年   20篇
  2016年   15篇
  2015年   9篇
  2014年   7篇
  2013年   85篇
  2012年   6篇
  2011年   13篇
  2010年   10篇
  2009年   11篇
  2008年   15篇
  2007年   14篇
  2006年   7篇
  2005年   5篇
  2004年   10篇
  2003年   7篇
  2002年   7篇
  2001年   8篇
  2000年   5篇
  1999年   8篇
  1998年   7篇
  1997年   2篇
  1996年   2篇
  1995年   4篇
  1994年   8篇
  1993年   3篇
  1992年   5篇
  1991年   4篇
  1990年   3篇
  1989年   2篇
  1988年   4篇
  1987年   4篇
  1986年   3篇
  1985年   3篇
  1984年   1篇
  1983年   3篇
  1982年   5篇
  1981年   4篇
  1980年   5篇
  1979年   3篇
  1978年   1篇
  1977年   1篇
  1976年   2篇
  1971年   1篇
  1969年   1篇
排序方式: 共有379条查询结果,搜索用时 734 毫秒
181.
182.
ABSTRACT

It is generally accepted that the Journal Impact Factor is a quality criterion. The objective was to determine the evolution along the period 2010–2016 of number of different types of papers, reviews and clinical trials, published by dental journals, as well as if they are related with the quartile occupied in the Journal Impact Factor 2017 ranking. To this end, ten journals per quartile belonging to the field Dentistry, Oral Surgery and Medicine in the 2017 Journal Citation Reports were randomly selected. For each journal and year, the total number of narrative reviews, systematic reviews (with and without meta-analysis), meta-analysis, clinical trials and randomized controlled trials were obtained from Pubmed. To achieve our goal, the slope of these variables over time was estimated using the least squares method, after which one-way analysis of variance of mean values was performed. In Dentistry, the journals of the top quartiles show a trend to publish increasing amounts of systematic reviews and meta-analysis, than the ones of the third and fourth quartile. On the other hand, globally, there was virtually no increase in narrative reviews, clinical trials and randomized controlled trial. Possible causes of this behavior are also discussed in this article.  相似文献   
183.
Abstract

This study looks at the effect of current climate variability and projected future climate change to 2025 on New Zealand's energy industry (mainly electricity supply and demand) and at the wider economic implications of these effects. Electricity demand is modulated by climate largely through temperature, while electricity supply is modulated largely through rainfall and inflows to the major hydroelectricity‐generating lakes in the South Island. Six climate scenarios are examined with an energy model to determine the change in the demand for energy and the change in the composition of energy supply, especially with regard to the mix of electricity generation. The output from this model is then used as an input to a multi‐industry general equilibrium model of the New Zealand economy.

The modelling demonstrates that while the expected effects of projected climate change on the energy industry over the next two decades are reasonably significant, the flow‐on effects from the energy to the wider economy are negligible, albeit slightly favourable. Modelling of the effects of climate variability, which includes unusually cold years, unusually warm years, and variable precipitation, however, shows that unexpected adverse events do have a measurable economic impact, particularly if wage rates are inflexible. Export industries are particularly disadvantaged by higher energy costs, implying a need for adequate reserve generation capacity. Just how much reserve capacity is optimal is a topic for further research.

Climate change scenarios to 2050 and 2100 show much greater climatic effects than are expected over the next 20 years. These have not been modelled as the types and costs of electricity generation technologies that might become available beyond 20 years are extremely uncertain.  相似文献   
184.
Resumen

Este estudio fue diseñado para poner a prueba la hipótesis de reactancia-indefensión de Wortman y Brehm (según la cual los efectos producidos por la incontrolabilidad están mediados por la duración del evento incontrolable) en relación al funcionamiento corporal. Para ello, se eligió como principal variable dependiente el control de la respuesta electromiográfica de la musculatura frontal. Se utilizó un diseño factorial 3 (expectativa de control alta, baja y nula) X 2 (entrenamiento en incontrolabilidad corto y largo). Asimismo, se incluyeron medidas sobre «locus de control», estilo atribucional, percepción y estrategias de control. Los resultados obtenidos confirman parcialmente la hipótesis establecida y son discutidos dentro del ámbito de la Psicofisiologia Social.  相似文献   
185.
This article reports on how research activity helped describe and analyse ASW (Approved Social Worker) learning experience as well as acting as a catalyst for change and development in policy and practice in Northern Ireland. The paper contextualizes the study by outlining the legislation, the main features of the ASW role and the approach to ASW training in Northern Ireland, and by reviewing the literature on the efficacy and value of competence‐based learning. While the findings do not provide conclusive evidence that a competence‐based approach is inherently more effective than previous courses, they do indicate that candidates who were trained in this way were moderately more satisfied than those who had participated in non‐competence based programmes. The research also highlights the importance of the interrelationship between training, practice experience and support in developing and sustaining competence. The paper concludes with a review of the recommendations arising from the study and an analysis of the developments in training and regulations relating to practice experience and re‐approval of ASWs since publication of the research. The study is of contemporary interest given the proposed changes to the role of ASWs/Mental Health Officers in the context of the reviews of UK mental health law.  相似文献   
186.
This study investigates the liaison role in social work field education from the perspective of those presently working in that capacity at both the undergraduate and graduate levels from the United States and Puerto Rico (N?=?408). On average, undergraduate liaisons have more years of liaison experience, are more likely to be full‐time status, spend less time driving to sites, and devote more overall time to the role. Undergraduate program liaisons spend less time on problems and rate the quality of sites, field instructors, and overall levels of learning higher than graduate programs. Undergraduate liaisons report more institutional support, a higher level of value for field education in the curriculum, and a higher level of satisfaction with their liaison roles than graduate program liaisons.  相似文献   
187.
Abstract

This article describes a cultural mapping tool developed specifically for working with Aboriginal people experiencing mental health problems. The tool has broad scope, drawing from ecological and systems approaches. It will assist social workers to understand cultural and family obligations and build relationships with Aboriginal service users. Students learning about cultural diversity have expressed concern about asking culturally-sensitive questions. Australian human service workers typically state they feel inadequate in addressing Aboriginal culture in their practice approaches. The three components of the cultural mapping toolbox, (a) the social and emotional wellbeing cluster map, (b) the community and cultural diversity map, and (c) the migration map, provide social workers with a way of supporting a culturally connected lifestyle in contemporary society.  相似文献   
188.
Social relationships can have considerable influence on physical and mental well-being in later life, particularly for those in long-term care settings such as assisted living (AL). Research set in AL suggests that other residents are among the most available social contacts and that co-resident relationships can affect life satisfaction, quality of life, and well-being. Functional status is a major factor influencing relationships, yet AL research has not studied in-depth or systematically considered the role it plays in residents' relationships. This study examines the influences of physical and mental function on co-resident relationships in AL and identifies the factors shaping the influence of functional status. We present an analysis of qualitative data collected over a one-year period in two distinct AL settings. Data collection included: participant observation, informal interviews, and formal in-depth interviews with staff, residents, administrators and visitors, as well as surveys with residents. Grounded theory methods guided our data collection and analysis. Our analysis identified the core category, “coming together and pulling apart”, which signifies that functional status is multi-directional, fluid, and operates in different ways in various situations and across time. Key facility- (e.g., admission and retention practices, staff intervention) and resident-level (e.g., personal and situational characteristics) factors shape the influence of functional status on co-resident relationships. Based on our findings, we suggest strategies for promoting positive relationships among residents in AL, including the need to educate staff, families, and residents.  相似文献   
189.
190.
Abstract

Aims: To apply the stress‐coping‐support perspective to the study of the effects of problem gambling in the family. Specifically, to examine the ways in which family members cope and the nature and sources of support they receive. To compare coping strategies of family members of gamblers with those of individuals living with other addictive behaviour in the family. Design: Cross‐sectional interview and questionnaire study of close relatives of problem gamblers. Participants: Sixteen close family members of gamblers from separate families, mainly parents and partners. Data: Semi‐structured interview; adapted version of the Coping Questionnaire (CQ). Findings: Data from the CQ and qualitative analysis of interview data suggested considerable use of ‘engaged’ (specifically controlling) ways of attempting to cope with such problems, comparable to the use of such strategies by relatives of people with alcohol or drug problems, but little use of ‘tolerant‐accepting’ and ‘withdrawal’ ways. Interview data on the support received (or not) by family members confirmed previous research showing that relatives of people with addiction problems often feel unsupported, but particularly appreciate positive emotional and practical support for themselves and their problem gambling relatives. Conclusions: The stress‐coping‐support perspective, previously applied to families with alcohol and drug problems, also offers an appropriate framework for understanding problem gambling and the family.  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