全文获取类型
收费全文 | 3908篇 |
免费 | 40篇 |
国内免费 | 2篇 |
专业分类
教育 | 2807篇 |
科学研究 | 565篇 |
各国文化 | 14篇 |
体育 | 128篇 |
综合类 | 8篇 |
文化理论 | 68篇 |
信息传播 | 360篇 |
出版年
2024年 | 3篇 |
2023年 | 15篇 |
2022年 | 23篇 |
2021年 | 35篇 |
2020年 | 53篇 |
2019年 | 71篇 |
2018年 | 134篇 |
2017年 | 177篇 |
2016年 | 235篇 |
2015年 | 151篇 |
2014年 | 115篇 |
2013年 | 238篇 |
2012年 | 184篇 |
2011年 | 204篇 |
2010年 | 110篇 |
2009年 | 53篇 |
2008年 | 102篇 |
2007年 | 73篇 |
2006年 | 62篇 |
2005年 | 700篇 |
2004年 | 479篇 |
2003年 | 314篇 |
2002年 | 140篇 |
2001年 | 68篇 |
2000年 | 36篇 |
1999年 | 33篇 |
1998年 | 8篇 |
1997年 | 6篇 |
1996年 | 9篇 |
1995年 | 12篇 |
1994年 | 6篇 |
1993年 | 3篇 |
1992年 | 10篇 |
1991年 | 3篇 |
1990年 | 6篇 |
1989年 | 5篇 |
1988年 | 7篇 |
1987年 | 7篇 |
1986年 | 7篇 |
1984年 | 4篇 |
1981年 | 5篇 |
1979年 | 4篇 |
1978年 | 5篇 |
1976年 | 4篇 |
1975年 | 2篇 |
1974年 | 4篇 |
1968年 | 4篇 |
1967年 | 2篇 |
1956年 | 2篇 |
1935年 | 2篇 |
排序方式: 共有3950条查询结果,搜索用时 15 毫秒
121.
The study's purpose was to identify the mediating role of intention and the stages of change (SOC) in physical activity (PA) over a 6-month period using two models (theory of planned behavior [TPB] and TPB/SOC). Participants were 143 adults with physical disabilities (70.68% response rate; M age = 46.03). The TPB constructs, SOC (time 1), and PA (time 2) were assessed using standardized self-report questionnaires. Based on path analyses, attitude had the highest effect on intention and SOC followed by perceived behavioral control within both well-fit models. The variance in PA explained by the first (TPB) and second (TPB/SOC) models was 16% and 28% respectively. In the just identified model of TPB/SOC, the direct effect of SOC on physical activity remained strong (gamma(soc.pa) = .45) and SOC approached full mediation through attitude. Health promotion interventions need to include both intention and behavior elements (SOC) reinforcing increased PA value and barrier elimination. 相似文献
122.
123.
Nicholas L. Holt Kacey C. Neely Linda G. Slater Martin Camiré Jean Côté Jessica Fraser-Thomas 《International review of sport and exercise psychology》2017,10(1):1-49
The overall purpose of this study was to create a model of positive youth development (PYD) through sport grounded in the extant qualitative literature. More specifically, the first objective was to review and evaluate qualitative studies of PYD in sport. The second objective was to analyze and synthesize findings from these studies. Following record identification and screening, 63 articles were retained for analysis. Meta-method analysis revealed strengths of studies were the use of multiple data collection and validity techniques, which produced high-quality data. Weaknesses were limited use of ‘named’ methodologies and inadequate reporting of sampling procedures. Philosophical perspectives were rarely reported, and theory was used sparingly. Results of an inductive meta-data analysis produced three categories: PYD climate (adult relationships, peer relationships, and parental involvement), life skills program focus (life skill building activities and transfer activities), and PYD outcomes (in personal, social, and physical domains). A model that distinguishes between implicit and explicit processes to PYD is presented. 相似文献
124.
In many Western science systems, funding structures increasingly stimulate academic research to contribute to practical applications,
but at the same time the rise of bibliometric performance assessments have strengthened the pressure on academics to conduct
excellent basic research that can be published in scholarly literature. We analyze the interplay between these two developments
in a set of three case studies of fields of chemistry in the Netherlands. First, we describe how the conditions under which
academic chemists work have changed since 1975. Second, we investigate whether practical applications have become a source
of credibility for individual researchers. Indeed, this turns out to be the case in catalysis, where connecting with industrial
applications helps in many steps of the credibility cycle. Practical applications yield much less credibility in environmental
chemistry, where application-oriented research agendas help to acquire funding, but not to publish prestigious papers or to
earn peer recognition. In biochemistry practical applications hardly help in gaining credibility, as this field is still strongly
oriented at fundamental questions. The differences between the fields can be explained by the presence or absence of powerful
upstream end-users, who can afford to invest in academic research with promising long term benefits. 相似文献
125.
126.
127.
128.
129.
Pat Ellis 《International Journal of Lifelong Education》2013,32(1):61-68
The main function of agricultural extension is generally thought to be the transfer through nonformal educational means of practical knowledge to agriculture and the enhancement of rural development. Agricultural extension has received renewed attention in recent years from international development agencies and considerable discussion has ensued regarding the appropriate role for extension programmes. Much of the attention has been directed towards improving the functions of existing services. This article discusses the policy considerations of extension within the broader context of agricultural development goals and the overall direction of the country's development objectives and strategies. A framework is presented for analysing important characteristics of different extension development options. The issues raised are relevant to the larger concerns of adult education policy and the promotion of lifelong learning strategies within society. They include the relationship of sectoral goals and policies to broader national objectives, the audience the public sector should target, the role of the private sector, the structural arrangements best suited to meet certain objectives and the correct mixture and co‐ordination of various services and programmes. 相似文献
130.
Jessica Gerrard 《Gender and education》2013,25(7):943-945