全文获取类型
收费全文 | 1829篇 |
免费 | 31篇 |
国内免费 | 1篇 |
专业分类
教育 | 1264篇 |
科学研究 | 129篇 |
各国文化 | 23篇 |
体育 | 221篇 |
文化理论 | 9篇 |
信息传播 | 215篇 |
出版年
2023年 | 25篇 |
2022年 | 9篇 |
2021年 | 10篇 |
2020年 | 27篇 |
2019年 | 55篇 |
2018年 | 63篇 |
2017年 | 73篇 |
2016年 | 57篇 |
2015年 | 41篇 |
2014年 | 64篇 |
2013年 | 563篇 |
2012年 | 34篇 |
2011年 | 43篇 |
2010年 | 29篇 |
2009年 | 40篇 |
2008年 | 52篇 |
2007年 | 42篇 |
2006年 | 40篇 |
2005年 | 32篇 |
2004年 | 30篇 |
2003年 | 23篇 |
2002年 | 23篇 |
2001年 | 17篇 |
2000年 | 10篇 |
1999年 | 22篇 |
1998年 | 19篇 |
1997年 | 12篇 |
1996年 | 11篇 |
1995年 | 9篇 |
1994年 | 14篇 |
1993年 | 15篇 |
1992年 | 17篇 |
1991年 | 19篇 |
1990年 | 24篇 |
1989年 | 12篇 |
1988年 | 14篇 |
1986年 | 7篇 |
1983年 | 9篇 |
1982年 | 13篇 |
1981年 | 8篇 |
1980年 | 9篇 |
1979年 | 11篇 |
1978年 | 16篇 |
1977年 | 13篇 |
1976年 | 14篇 |
1974年 | 7篇 |
1973年 | 11篇 |
1970年 | 9篇 |
1969年 | 7篇 |
1960年 | 7篇 |
排序方式: 共有1861条查询结果,搜索用时 296 毫秒
121.
122.
123.
Edwards TL Harper JC Polsky R Lopez DM Wheeler DR Allen AC Brozik SM 《Biomicrofluidics》2011,5(4):44115-4411514
Herein is described the fabrication and use of a plastic multilayer 3-channel microfluidic fixture. Multilayer devices were produced by laser machining of plastic polymethylmethacrylate and polyethyleneterapthalate laminates by ablation. The fixture consisted of an array of nine individually addressable gold or gold/ITO working electrodes, and a resistive platinum heating element. Laser machining of both the fluidic pathways in the plastic laminates, and the stencil masks used for thermal evaporation to form electrode regions on the plastic laminates, enabled rapid and inexpensive implementation of design changes. Electrochemiluminescence reactions in the fixture were achieved and monitored through ITO electrodes. Electroaddressable aryl diazonium chemistry was employed to selectively pattern gold electrodes for electrochemical multianalyte DNA detection from double stranded DNA (dsDNA) samples. Electrochemical detection of dsDNA was achieved by melting of dsDNA molecules in solution with the integrated heater, allowing detection of DNA sequences specific to breast and colorectal cancers with a non-specific binding control. Following detection, the array surface could be renewed via high temperature (95 °C) stripping using the integrated heating element. This versatile and simple method for prototyping devices shows potential for further development of highly integrated, multi-functional bioanalytical devices. 相似文献
124.
Ford P De Ste Croix M Lloyd R Meyers R Moosavi M Oliver J Till K Williams C 《Journal of sports sciences》2011,29(4):389-402
Within the UK, the "Long Term Athlete Development" (LTAD) model has been proposed by a variety of national governing bodies to offer a first step to considering the approach to talent development. The model, which is primarily a physiological perspective, presents an advancement of understanding of developing athletic potential alongside biological growth. It focuses on training to optimize performance longitudinally, and considers sensitive developmental periods known as "windows of opportunity". However, it appears that there are a number of problems with this theoretical model that are not necessarily transparent to coaches. Principally, the model is only one-dimensional, there is a lack of empirical evidence upon which the model is based, and interpretations of the model are restricted because the data on which it is based rely on questionable assumptions and erroneous methodologies. Fundamentally, this is a generic model rather than an individualized plan for athletes. It is crucial that the LTAD model is seen as a "work in progress" and the challenge, particularly for paediatric exercise scientists, is to question, test, and revise the model. It is unlikely that this can be accomplished using classical experimental research methodology but this should not deter practitioners from acquiring valid and reliable evidence. 相似文献
125.
As practitioners of the imperial sport of the Victorian age, cricketers rallied whenever war descended upon England and its colonies. The South African War of 1899-1902 was no different. Adding to existing work on cricket's imperial development within South Africa, this study marks a significant contribution to research on the link between masculinity, war and sport during the Victorian era. A concept emerging from the English public schools of the mid- to late nineteenth century, the masculine ethos of sport and military honour had reached colonial South Africa by the outbreak of war in 1899. In its analysis of cricket and masculinity, this essay examines the events surrounding the war in South Africa and provides an example of the distinct relationship that existed between the military and the masculinity of sport and its organisation during this era. 相似文献
126.
127.
This article maps how narrative inquiry—the use of story to study human experience—has been employed as both method and form to capture cross-cultural learning associated with Western doctoral students’ travel study to eastern destinations. While others were the first to employ this method in the travel study domain, we are the first to comprehensively explore the affordances and constraints of the methodology and the possibilities it holds for illuminating knowledge developments, community growth, and identity transformations on the part of participating students. Story fragments illustrating each of these opportunities and challenges are drawn from the China Study Abroad Program, a program sponsored by the University of Houston’s Asian American Studies Center that has been underway since 1995. Affordances of the narrative inquiry research method include such things as detailed accounts of individuals in interaction with diverse people/places/things and explications of stories people live in and by. Accounts, which are “true for now,” as opposed to true for all time and the dangers of human fallibility form two examples of narrative inquiry’s constraints. 相似文献
128.
129.
130.