全文获取类型
收费全文 | 8771篇 |
免费 | 68篇 |
国内免费 | 7篇 |
专业分类
教育 | 6474篇 |
科学研究 | 728篇 |
各国文化 | 147篇 |
体育 | 526篇 |
综合类 | 5篇 |
文化理论 | 105篇 |
信息传播 | 861篇 |
出版年
2021年 | 55篇 |
2020年 | 84篇 |
2019年 | 155篇 |
2018年 | 207篇 |
2017年 | 237篇 |
2016年 | 220篇 |
2015年 | 171篇 |
2014年 | 216篇 |
2013年 | 2047篇 |
2012年 | 172篇 |
2011年 | 192篇 |
2010年 | 182篇 |
2009年 | 158篇 |
2008年 | 200篇 |
2007年 | 205篇 |
2006年 | 188篇 |
2005年 | 191篇 |
2004年 | 177篇 |
2003年 | 154篇 |
2002年 | 147篇 |
2001年 | 126篇 |
2000年 | 126篇 |
1999年 | 133篇 |
1998年 | 113篇 |
1997年 | 117篇 |
1996年 | 118篇 |
1995年 | 147篇 |
1994年 | 121篇 |
1993年 | 106篇 |
1992年 | 114篇 |
1991年 | 106篇 |
1990年 | 102篇 |
1989年 | 107篇 |
1988年 | 98篇 |
1987年 | 96篇 |
1986年 | 88篇 |
1985年 | 99篇 |
1984年 | 105篇 |
1983年 | 99篇 |
1982年 | 109篇 |
1981年 | 82篇 |
1980年 | 61篇 |
1979年 | 74篇 |
1978年 | 77篇 |
1977年 | 85篇 |
1976年 | 67篇 |
1975年 | 56篇 |
1974年 | 59篇 |
1973年 | 60篇 |
1971年 | 44篇 |
排序方式: 共有8846条查询结果,搜索用时 0 毫秒
101.
It is shown that reinvestment and inventory effects can be described in 0431 0368 bond-graph terms. The associated differential equations in price and order-flow 0431 0368 V variables are bilinear forms. These effects are the fundamental inertia and compliance 0431 0368 V 3 of economic bond graph theory. Properties of the components and example market 0431 0368 V 3 graphs are discussed. 相似文献
102.
103.
This article addresses the application of the Accelerated Schools Project (ASP) model in Hong Kong, as well as specific aspects of implementation in two schools. One lesson from the localized project, the Accelerated Schools for Quality Education (ASPQE), is that change is slow. This suggests that time should be given for both cultural change and building communities of inquiry, especially in cases where the staff may not be initially receptive of school reform models such as the Accelerated Schools Project. A second important lesson is that the commitment of the principal and a core group is critical for change. 相似文献
104.
In the present paper, a dynamic plastic damage model for concrete has been employed to estimate responses of a reinforced concrete slab subjected to blast loading. The interaction between the blast wave and the concrete slab is considered in 3D simulation. In the first stage, the initial detonation and blast wave propagation is modelled in 2D simulation before the blast wave reaches the concrete slab, then the results obtained from 2D calculation are remapped to a 3D model. The calculated blast load is compared with that obtained from TM5-1300. Numerical results of the concrete slab response are compared with the explosive test carried out- in the Weapons System Division, Defence Science and Technology Organisation, Department of Defence, Australia. 相似文献
105.
106.
John S. Levin 《Higher Education》2001,42(2):237-262
This study addresses the nature of governmentpolicy toward community colleges in the 1990sand the responses of institutions to thesepolicies. This is an examination of Canadianand U.S. community colleges in two Canadianprovinces and three U.S. states as well asanalysis of government policy in two countries,at the federal, state and provincial levels.Government policies are viewed as directingcommunity colleges toward economic goals,emphasizing workforce training and stateeconomic competitiveness as outcomes,compelling colleges to improve efficiencies,increase productivity, and to becomeaccountable to government and responsive tobusiness and industry. Government responses toeconomic concerns at the provincial and statelevels resulted in economic developmentpolicies applicable to community colleges. Institutional responses among communitycolleges, evident in behaviors such asmarketization and productivity and efficiency,altered college missions, resulting in thepursuit of economic ends by theseinstitutions. 相似文献
107.
108.
Concerns surround the association between alcohol advertising and alcohol consumption amongst audiences. Research has examined the link in broadcast sports, yet limited attention is directed towards newer media. This paper examines whether there is a link between alcohol sponsorship in sports games and alcohol brand recall, recognition and choice, and whether in-game health messages moderate this association. Simulated games designed specifically for this study are used to observe whether in-game alcohol sponsorship combined with embedded health messages affect the player’s brand awareness. Findings highlight the influence of in-game alcohol sponsorship placement on brand awareness, yet embedded health messages do not impact consumer behaviours. This research provides evidence suggesting regulations in games may be warranted and further examination of health messaging in sponsor brand placement necessary. 相似文献
109.
The purposes of this study were to determine the relationships between: (a) measures of body size/composition and heat production/storage, and (b) heat production/storage and heart rate (HR) drift during running at 95% of the velocity that elicited lactate threshold, which was determined for 20 healthy recreational male runners. Subsequently, changes in skin and tympanic temperatures associated with a vigorous 20-min run, HR, and VO2 data were recorded. It was found that heat production was significantly correlated with body mass (r = .687), lean mass (r = .749), and body surface area (BSA, r = .699). Heat storage was significantly correlated with body mass (r = .519), fat mass (r = .464), and BSA (r = .498). The percentage of produced heat stored was significantly correlated with body mass (r = .427), fat mass (r = .455), and BSA (r = .414). Regression analysis showed that the sum of body mass, percentage of body fat, BSA, lean mass, and fat mass accounted for 30% of the variability in heat storage. It was also found that HR drift was significantly correlated with heat storage (r = .383), percentage of produced heat stored (r = .433), and core temperature change (r = .450). It was concluded that heavier runners experienced greater heat production, heat storage, and core temperature increases than lighter runners during vigorous running. 相似文献
110.
John O’Rourke John West 《International Journal of Disability, Development & Education》2015,62(5):531-546
Education assistants (EAs) who support students with disability in general education classrooms often find themselves in difficult situations. Caught in the firing line between their personal sense of duty, expectations of the classroom teachers, and the challenges that inclusion presents, their roles as primary support agents are anything but clear. In the following article the authors describe the findings from a modification of screening tool on the over-utilisation of paraprofessionals. The 16-item electronic survey focused on factors associated with EA support, conducted in a variety of Western Australian schools. The findings revealed that school community members such as EAs, classroom teachers, administrators and parents observed aspects of EA support that appear counter-productive towards more inclusive pedagogy. 相似文献