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   1121篇
  免费   60篇
  国内免费   1篇
管理学   102篇
民族学   9篇
人口学   88篇
丛书文集   7篇
理论方法论   199篇
综合类   18篇
社会学   707篇
统计学   52篇
  2023年   8篇
  2021年   5篇
  2020年   23篇
  2019年   29篇
  2018年   41篇
  2017年   52篇
  2016年   37篇
  2015年   32篇
  2014年   34篇
  2013年   203篇
  2012年   44篇
  2011年   49篇
  2010年   30篇
  2009年   30篇
  2008年   59篇
  2007年   47篇
  2006年   36篇
  2005年   30篇
  2004年   35篇
  2003年   38篇
  2002年   36篇
  2001年   22篇
  2000年   32篇
  1999年   20篇
  1998年   15篇
  1997年   14篇
  1996年   15篇
  1995年   15篇
  1994年   17篇
  1993年   13篇
  1992年   5篇
  1991年   12篇
  1990年   18篇
  1989年   9篇
  1988年   13篇
  1987年   6篇
  1986年   4篇
  1985年   4篇
  1984年   6篇
  1983年   8篇
  1982年   4篇
  1981年   4篇
  1980年   4篇
  1978年   3篇
  1976年   6篇
  1973年   3篇
  1971年   4篇
  1970年   1篇
  1969年   2篇
  1966年   1篇
排序方式: 共有1182条查询结果,搜索用时 17 毫秒
231.
The entropy measure H=−σpi log pi is being used with increasing frequency in the analysis of business and economic data. It is, however, simply another measure of dispersion which can be related to the moments of the probability function. Its virtues stem from its decomposition and interpretative properties. This paper surveys the uses to which the measure has been put in the literature, and discusses whether its use has been appropriate and innovative.  相似文献   
232.
A growing body of research demonstrates that believing action to reduce the risks of climate change is both possible (self‐efficacy) and effective (response efficacy) is essential to motivate and sustain risk mitigation efforts. Despite this potentially critical role of efficacy beliefs, measures and their use vary wildly in climate change risk perception and communication research, making it hard to compare and learn from efficacy studies. To address this problem and advance our understanding of efficacy beliefs, this article makes three contributions. First, we present a theoretically motivated approach to measuring climate change mitigation efficacy, in light of diverse proposed, perceived, and previously researched strategies. Second, we test this in two national survey samples (Amazon's Mechanical Turk N = 405, GfK Knowledge Panel N = 1,820), demonstrating largely coherent beliefs by level of action and discrimination between types of efficacy. Four additive efficacy scales emerge: personal self‐efficacy, personal response efficacy, government and collective self‐efficacy, and government and collective response efficacy. Third, we employ the resulting efficacy scales in mediation models to test how well efficacy beliefs predict climate change policy support, controlling for specific knowledge, risk perceptions, and ideology, and allowing for mediation by concern. Concern fully mediates the relatively strong effects of perceived risk on policy support, but only partly mediates efficacy beliefs. Stronger government and collective response efficacy beliefs and personal self‐efficacy beliefs are both directly and indirectly associated with greater support for reducing the risks of climate change, even after controlling for ideology and causal beliefs about climate change.  相似文献   
233.
Believing action to reduce the risks of climate change is both possible (self‐efficacy) and effective (response efficacy) is essential to motivate and sustain risk mitigation efforts, according to current risk communication theory. Although the public recognizes the dangers of climate change, and is deluged with lists of possible mitigative actions, little is known about public efficacy beliefs in the context of climate change. Prior efficacy studies rely on conflicting constructs and measures of efficacy, and links between efficacy and risk management actions are muddled. As a result, much remains to learn about how laypersons think about the ease and effectiveness of potential mitigative actions. To bring clarity and inform risk communication and management efforts, we investigate how people think about efficacy in the context of climate change risk management by analyzing unprompted and prompted beliefs from two national surveys (N = 405, N = 1,820). In general, respondents distinguish little between effective and ineffective climate strategies. While many respondents appreciate that reducing fossil fuel use is an effective risk mitigation strategy, overall assessments reflect persistent misconceptions about climate change causes, and uncertainties about the effectiveness of risk mitigation strategies. Our findings suggest targeting climate change risk communication and management strategies to (1) address gaps in people's existing mental models of climate action, (2) leverage existing public understanding of both potentially effective mitigation strategies and the collective action dilemma at the heart of climate change action, and (3) take into account ideologically driven reactions to behavior change and government action framed as climate action.  相似文献   
234.
Multiculturalism and anti‐bias education remain a significant area of pedagogical practice and scholarly inquiry for early childhood researchers and practitioners. Yet much less attention has been paid to detailing anti‐racist components within the classroom, and also within the broader field of early childhood education, including its foundational knowledge base. This article addresses this gap by advancing a framework for early childhood education informed by specific tenets of anti‐racism theory. Drawing on an analysis of White power and privilege and systemic racism, it outlines three main principles of anti‐racist early childhood education. Next, it presents a critical exploration of these principles and how they can be used to transform the existing paradigm of U.S. early childhood education, so as to offer equitable learning opportunities for racialized children.  相似文献   
235.
Despite widespread recognition of the usefulness of a biopsychosocial approach in social work, there are limited studies exploring how social workers can use this approach to support the health and wellbeing of carers of young people with first episode psychosis (FEP). Validated questionnaires and anthropometric measures were used to assess the physical health and wellbeing of 42 carers of young people with FEP. Carers had moderate levels of negative caregiving consequences, quality of life, and health status. More than half (52.4%) of carers were experiencing social isolation. Many carers were overweight (78.6%), had a high risk for type 2 diabetes (39.0%), and had hypertension (33.3%). Practical implications of a biopsychosocial approach to social work that supports both clients and their carers are discussed.  相似文献   
236.
Previous work has suggested that individual differences in infant functional neuroconnectivity are a potential biomarker for later cognitive and social outcomes, but the mechanisms are unclear. This study investigated a longitudinal model of infant frontotemporal electroencephalogram (EEG) coherence predicting toddler inhibition, which then predicted childhood social responsiveness. A structural equation model showed good fit, with increased right hemisphere frontotemporal EEG coherence predicting less inhibition at age 2, which in turn predicted less social responsiveness at age 4. These findings support the hypothesis that infant frontotemporal connectivity is indirectly associated with later social behavior, with toddler inhibition as a potential mechanism.  相似文献   
237.
Peer collaboration: conflict,cooperation, or both?   总被引:3,自引:0,他引:3  
The present study sought to characterize the mechanism of cognitive change during peer interaction. Forty-eight focal subjects (8-year-old females) were paired with either their mother or their best friend for dyadic discussion of two socio-moral dilemmas. The focal subjects were pretested and posttested to assess any change in their socio-moral reasoning. The hypothesis tested was that subjects cooperatively co-construct solutions to dilemmas; therefore, the discussions regarding solutions they eventually accept, as opposed to those they reject, will be positively related to posttest performance. Contrary to expectations, it was discovered that only the discussion of rejected solutions has a significant relation to cognitive outcome. Close analysis revealed that the consequence of a rejected solution discussion often is the focal's proposal of a more acceptable solution, and this also has a strong relation to outcome. A new conceptualization of collaboration is proposed, one that focuses on the importance of dyadic consideration of multiple perspectives. The consequence of such consideration is both critical analysis of ideas (socio-cognitive conflict) and co-construction of new understanding (cooperation).  相似文献   
238.
Abstract Critics of agricultural news claim farm media and mass media coverage of agriculture is systematically distorted, a condition that could seriously affect the agricultural information system. A national survey used agricultural journalists as expert judges to assess how well three types of print journalists cover agricultural news. Their assessments indicated that mass media reporters who do not regularly cover agricultural news tend to write agriculture stories that are superficial and stereotyped but not biased toward agricultural interests. Farm magazine writers' stories are not superficial or stereotyped, but writers are uncritical of agriculture, biased toward agroindustry, and overlook important social and environmental issues. Newspaper farm beat reporters are closer to farm magazine writers in not trivializing agriculture and closer to general newspaper reporters in avoiding close ties with industry. Both farmers and public thus receive biased and fragmented reporting that may polarize their views on current agricultural issues. Even if reporters are aware of critical shortcomings in their coverage, improvement may require reduction in structural constraints on story choice.  相似文献   
239.
240.
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