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   2715篇
  免费   159篇
  国内免费   16篇
管理学   859篇
民族学   1篇
人才学   1篇
人口学   40篇
丛书文集   123篇
理论方法论   197篇
综合类   1130篇
社会学   423篇
统计学   116篇
  2024年   2篇
  2023年   42篇
  2022年   10篇
  2021年   26篇
  2020年   67篇
  2019年   72篇
  2018年   81篇
  2017年   96篇
  2016年   72篇
  2015年   73篇
  2014年   162篇
  2013年   350篇
  2012年   132篇
  2011年   174篇
  2010年   135篇
  2009年   134篇
  2008年   150篇
  2007年   162篇
  2006年   148篇
  2005年   121篇
  2004年   116篇
  2003年   86篇
  2002年   101篇
  2001年   56篇
  2000年   57篇
  1999年   48篇
  1998年   25篇
  1997年   24篇
  1996年   16篇
  1995年   15篇
  1994年   33篇
  1993年   8篇
  1992年   17篇
  1991年   11篇
  1990年   8篇
  1989年   8篇
  1988年   14篇
  1987年   6篇
  1986年   8篇
  1985年   3篇
  1984年   6篇
  1983年   6篇
  1982年   6篇
  1981年   3篇
排序方式: 共有2890条查询结果,搜索用时 31 毫秒
61.
As part of the process of examining their theory of change (TOC) and reflecting on grant making activity, one Midwestern foundation employed a multipronged strategy to assess 209 community-based mental health grants across seven years of funding. This article details the evaluation approach, which comprised these areas of the TOC: grantees’ use of evidence-based interventions, cultural competency, quality improvement, community collaboration, and use of integrated care. Inductive analyses identified grantees’ use of innovative practices, trauma-informed care, and use of validated instruments. In an iterative exercise spanning multiple years, the foundation and researchers found ways to gather information about community capacity and impact while simultaneously minimizing grantee data collection/reporting burden. Findings revealed that community agencies were improving in their uptake of evidence-based interventions and use of validated instruments. Community grantee use of trauma informed care also improved over the study period. Grantee desire to collaborate and coordinate services within the community was also strong. The research also revealed that in multiple domains (such as technology and non-profit operating costs) grantees needed support in building agency capacity. These findings shed light on which aspects of the foundation’s TOC were being addressed through funding, and which areas of the community needed additional support.  相似文献   
62.
63.
64.
65.
66.
天府旅游名县创建是按照全域旅游发展理念开展的,以建设世界重要旅游目的地为目标的建设工程。文章在系统整理旅游目的地竞争力主要研究成果基础上,建立15个天府旅游名县竞争力评价指标,基于可量化数据,采用主成分和聚类分析方法,对进入天府旅游名县的40个县(市、区)进行实证研究。结果显示,旅游核心竞争力、旅游发展规模、旅游综合实力、非优势资源品牌创建能力等因素是构成天府旅游名县评判的主要因子;从空间结构上看,呈现成都平原最强,川西、川北居中,川南最弱的局面;从创建动力上看,不应仅关注创建结果,而应通过创建工作,促进县域经济综合发展水平和城市发展潜力提升。  相似文献   
67.
In emergent photovoltaics, nanoscale materials hold promise for optimizing device characteristics; however, the related impacts remain uncertain, resulting in challenges to decisions on strategic investment in technology innovation. We integrate multi‐criteria decision analysis (MCDA) and life‐cycle assessment (LCA) results (LCA‐MCDA) as a method of incorporating values of a hypothetical federal acquisition manager into the assessment of risks and benefits of emerging photovoltaic materials. Specifically, we compare adoption of copper zinc tin sulfide (CZTS) devices with molybdenum back contacts to alternative devices employing graphite or graphene instead of molybdenum. LCA impact results are interpreted alongside benefits of substitution including cost reductions and performance improvements through application of multi‐attribute utility theory. To assess the role of uncertainty we apply Monte Carlo simulation and sensitivity analysis. We find that graphene or graphite back contacts outperform molybdenum under most scenarios and assumptions. The use of decision analysis clarifies potential advantages of adopting graphite as a back contact while emphasizing the importance of mitigating conventional impacts of graphene production processes if graphene is used in emerging CZTS devices. Our research further demonstrates that a combination of LCA and MCDA increases the usability of LCA in assessing product sustainability. In particular, this approach identifies the most influential assumptions and data gaps in the analysis and the areas in which either engineering controls or further data collection may be necessary.  相似文献   
68.
A Bayesian statistical temporal‐prevalence‐concentration model (TPCM) was built to assess the prevalence and concentration of pathogenic campylobacter species in batches of fresh chicken and turkey meat at retail. The data set was collected from Finnish grocery stores in all the seasons of the year. Observations at low concentration levels are often censored due to the limit of determination of the microbiological methods. This model utilized the potential of Bayesian methods to borrow strength from related samples in order to perform under heavy censoring. In this extreme case the majority of the observed batch‐specific concentrations was below the limit of determination. The hierarchical structure was included in the model in order to take into account the within‐batch and between‐batch variability, which may have a significant impact on the sample outcome depending on the sampling plan. Temporal changes in the prevalence of campylobacter were modeled using a Markovian time series. The proposed model is adaptable for other pathogens if the same type of data set is available. The computation of the model was performed using OpenBUGS software.  相似文献   
69.
“营改增”政策试点的市场初步评估   总被引:3,自引:0,他引:3  
会计市场咨询表明,"营改增"政策是一个相当积极的信号,对于上海行业细分和服务外包的发展、尤其是总部经济的发展有重大的推动作用。但从政策实施的实际效果看:首先受益的是制造业服务业分离企业,部分服务企业实际税负尚未降低;部分中资企业对于政策的了解较为局限,不懂得如何从"营改增"中获益;没有完整会计账册的小微企业无法享受增值税抵扣带来的税负减轻,反而由此在同业竞争中与大中企业相比丧失了部分议价竞争能力。针对上述问题,应采取相应的对策措施逐步加以解决。  相似文献   
70.
ABSTRACT

Developing professional identity is a key aim of social work education. This paper argues that the Professional Capabilities Framework (PCF) – a holistic, capability approach to student assessment used in England’s social work education programmes – is ideally placed to promote the development of students’ professional identities. The paper discusses two research studies, each of which was stimulated by significant policy changes in England’s social work profession. The author draws out the implications of both studies for supporting social work students to develop their professional identities. It is concluded that the PCF is valued by practice educators as an assessment and teaching tool, while acknowledging that its future is uncertain due to the lack of continuity impacting on England’s social work profession. This paper is equally of relevance for social work educators outside the UK who may be developing and evaluating their assessment approaches and also for those experiencing the impact of rapid policy changes in their own countries.  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