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   4359篇
  免费   283篇
  国内免费   21篇
管理学   36篇
劳动科学   2篇
民族学   223篇
人口学   208篇
丛书文集   441篇
理论方法论   294篇
综合类   3093篇
社会学   216篇
统计学   150篇
  2024年   3篇
  2023年   28篇
  2022年   30篇
  2021年   52篇
  2020年   60篇
  2019年   60篇
  2018年   77篇
  2017年   90篇
  2016年   76篇
  2015年   115篇
  2014年   249篇
  2013年   300篇
  2012年   278篇
  2011年   324篇
  2010年   293篇
  2009年   259篇
  2008年   284篇
  2007年   385篇
  2006年   348篇
  2005年   335篇
  2004年   269篇
  2003年   240篇
  2002年   161篇
  2001年   144篇
  2000年   84篇
  1999年   34篇
  1998年   13篇
  1997年   15篇
  1996年   13篇
  1995年   11篇
  1994年   5篇
  1993年   4篇
  1992年   7篇
  1991年   3篇
  1990年   2篇
  1989年   3篇
  1988年   8篇
  1986年   1篇
排序方式: 共有4663条查询结果,搜索用时 15 毫秒
1.
自然保护地在维持生态平衡,实现生态系统服务功能中可以发挥重要作用,但不同类型自然保护地的主导生态系统服务功能供给存在一定差异.《自然保护地法》立法工作须依赖理论上对自然保护地的类型化,并在此基础上建构对应型的规划建设、运营管理等方面的具体制度.因此,基于生态系统服务功能供给的空间差异,可以将当前相互重叠、缺乏体系的自然保护地划分为国家公园、自然保护区、自然公园、自然保护小区等四种类型,搭建"1部基础法律+4部类型化条例(或法律)"的自然保护地法律体系,并可以通过体系化公法、私法制度工具强化自然保护地的有效治理.  相似文献   
2.
ABSTRACT

The severe mental health problems of many of the young people living in residential settings pose a great challenge and demand on child protection and mental care (MC) services. Drawing on comparative research and debates from six European countries, this study examines demands for integrated care and interprofessional collaboration practices between residential child care (RCC) and MC. In this article, research data will be brought together from Denmark, Finland, Germany, Lithuania, the UK (Scotland) and Spain. In total, 61 practitioners from RCC and MC were interviewed. Given the complexity of the residential care service context and service system differences across national contexts, the original hypothesis was that this would differentiate the collaboration practices. However, the similarity between the countries is greater than anticipated. The concluding findings are organised by matrix technique into a content-analytic summary table. The main finding was that in spite of encouragement for integrated RCC, obstacles for collaboration and lack of coordination between systems remain, often related to understanding the professional role and tasks, lack of shared knowledge, attitudes and ways of communication. One significant finding in the cross-country comparison was the evident and unrealistic expectations for the ‘other’ provider to help and care.  相似文献   
3.
采用DEA模型对安徽省大别山区旅游扶贫效率的综合测度影响因素分析可知:安徽省大别山区旅游扶贫效率处于中等偏低水平,呈现波动上升的趋势,主要受规模效率驱动;旅游扶贫规模效率和旅游扶贫综合效率的空间分异特征较为类似,均呈现出区域中间高南北低的分布,旅游扶贫纯技术效率高值区呈现出由区域北部和南部片状集中分布逐渐向四周不断分散分布的演化态势;投入规模、人力支持水平、可达性水平、信息化水平对大别山区旅游扶贫效率产生正向影响,且影响强弱呈现为信息化水平>人力支持>可达性水平>投入规模。  相似文献   
4.
This study investigates staff and family attitudes towards the use of the fences that surround many aged care facilities in Australia, in the context of indefinite detention of people with dementia. This indefinite detention has been described in a report from an Australian Senate Inquiry as “a significant problem within the aged care context”, which “is often informal, unregulated and unlawful”. Five focus groups comprising direct care workers, family members, nurse unit managers and facility managers discussed the reasons for and their attitudes towards fences. The results show a tension between the provision of physical and emotional safety. This is to say that even while it is illegal to detain people with dementia against their will, and even while participants understood the negative impact of fences on the well‐being and emotional safety of people with dementia, they accepted and supported the presence of perimeter fences because they provided the perception that fences kept people with dementia physically safe. This has implications for redressing the balance between physical and emotional safety in policy and practice.  相似文献   
5.
为提升历史城区的绿道品质,优化非机动车出行环境,对自行车绿道系统的规划与设计方法进行了实证研究。根据自行车绿道系统的特性,按照空间形态特性将历史城区的自行车绿道系统分为单元、廊道及节点等3类要素,通过自组织映射图模型、最短路算法、旅行推销员算法及自行车路阻函数等,在地理信息系统上建立了基于赋权系数的自行车绿道系统规划方法,并应用所提出的方法对西安市主城区自行车绿道系统进行实证研究。研究结果表明,西安可以构建成包括22条骑行廊道、总长度142.6 km的自行车绿道网络,证明提出的方法能建立适用于历史城区出行特性的自行车绿道系统。  相似文献   
6.
Abstract

Although associations between developmental trauma, juvenile justice involvement and youth substance use have been previously reported in the published literature, the interconnection among these three factors has not been adequately studied. This article describes the interconnection among these three factors and calls for greater attention to the role of adverse childhood experiences (ACEs) in the diagnosis and treatment of youth who present with histories of substance use and/or offending behavior. Pilot data are presented that show high rates of self-reported trauma exposure, substance use history, justice involvement, and mental health problems in a sample of adolescents in residential treatment. The data point to the need for residential treatment centers to consider trauma histories in developing treatment plans for youth with current and prior substance use and offending behavior.  相似文献   
7.
The aim of this study was to analyse the interpersonal relationships in the school context of children living in different care settings (adoptive families, residential care centres, birth families). Participants were 76 children between eight and fourteen years of age (M = 10.78, SD = 1.38), belonging to one of three groups: international adoptees, children living in residential care in Spanish institutions, and a comparison sample of Spanish children living with their birth families with no connection with child protection. Sociometric information was collected in the classroom of each child during school hours. Internationally adopted children from Russia showed considerable difficulties in their relationships with peers; they were more likely to be rejected and their peers described them as less prosocial and somewhat more aggressive. With a better sociometric position than the adoptees, children in residential care were rated by their peers as more aggressive and less prosocial than the normative population. Coordination and integrated work between the family, protection centres, schools, and other social services should be a strategic priority in the promotion of healthy social development in these groups of children.  相似文献   
8.
There is growing recognition of the experience of non-death-related loss and grief. One unexplored area of non-death-related loss and grief is associated with older people’s transition from home to residential aged care (RAC). This paper reports findings from a qualitative study that explored the experiences of people living in RAC, carer-relatives of people living in RAC and RAC staff. Using theories of loss and grief, the paper identifies features of the transition to RAC that are associated with unresolved loss and maladaptation to changed circumstances, and the types of support that would mitigate these. Using a series of focus groups with both residents and carer-relatives, as well as staff, the study found that residents and their families need more support to negotiate the multiple, often necessarily hasty decisions and bureaucratic requirements associated with transitioning to RAC, while simultaneously experiencing loss and grief. The types of support that families would welcome from service providers include facilitating shared decision making, valuing family and community carer expertise and providing practical information and assistance to fulfil administrative obligations.  相似文献   
9.
科技企业是实现科技创新的驱动者和科技成果转化的重要载体,也是推动研究开发的重要参与者,科学评价科技企业创新能力有助于企业自身不断发展壮大。在分析国内外新区科技企业创新驱动发展相关理论研究的基础上,从研发投入、研发基础、研发效益和现代科技四个角度,运用层次分析法构建科技企业创新能力评价系统,并通过实证分析说明评价系统的可靠性;根据评价系统测算出现阶段雄安新区科技企业创新能力,通过与成熟新区科技企业的比较,发现其短板和不足,力图为决策者科学合理评价、管理科技企业创新发展提供有益参考。  相似文献   
10.
当前,小区的景观配置及绿化已经成为人们选择住宅的重要条件之一。小区景观设计的细节往往是小区景观的配套设计与绿化成功的关键。住宅小区景观的配套设计与绿化是自然与人的完美协调与交融,是人的精神通过加工寄托于景物的一个过程。  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