全文获取类型
收费全文 | 7658篇 |
免费 | 104篇 |
国内免费 | 4篇 |
专业分类
教育 | 5480篇 |
科学研究 | 585篇 |
各国文化 | 126篇 |
体育 | 709篇 |
综合类 | 3篇 |
文化理论 | 90篇 |
信息传播 | 773篇 |
出版年
2022年 | 34篇 |
2021年 | 74篇 |
2020年 | 137篇 |
2019年 | 225篇 |
2018年 | 265篇 |
2017年 | 273篇 |
2016年 | 236篇 |
2015年 | 157篇 |
2014年 | 240篇 |
2013年 | 1804篇 |
2012年 | 206篇 |
2011年 | 203篇 |
2010年 | 165篇 |
2009年 | 180篇 |
2008年 | 208篇 |
2007年 | 188篇 |
2006年 | 201篇 |
2005年 | 185篇 |
2004年 | 167篇 |
2003年 | 148篇 |
2002年 | 134篇 |
2001年 | 108篇 |
2000年 | 118篇 |
1999年 | 116篇 |
1998年 | 103篇 |
1997年 | 92篇 |
1996年 | 94篇 |
1995年 | 79篇 |
1994年 | 81篇 |
1993年 | 70篇 |
1992年 | 78篇 |
1991年 | 74篇 |
1990年 | 83篇 |
1989年 | 77篇 |
1988年 | 68篇 |
1987年 | 69篇 |
1986年 | 55篇 |
1985年 | 44篇 |
1984年 | 58篇 |
1983年 | 48篇 |
1982年 | 52篇 |
1981年 | 44篇 |
1980年 | 48篇 |
1979年 | 50篇 |
1978年 | 51篇 |
1977年 | 34篇 |
1976年 | 41篇 |
1974年 | 39篇 |
1973年 | 35篇 |
1971年 | 27篇 |
排序方式: 共有7766条查询结果,搜索用时 203 毫秒
1.
Research in Higher Education - Increasingly, undergraduates take more than 4 years to complete a baccalaureate, a situation widely perceived as a waste of time and money, for students,... 相似文献
2.
3.
4.
Harry F. Dorrell Joseph M. Moore Mark F. Smith Thomas I. Gee 《Journal of sports sciences》2019,37(1):67-73
This study investigated the validity and reliability of the GymAware PowerTool (GPT). Thirteen resistance trained participants completed three visits, consisting of three repetitions of free-weight back squat, bench press, deadlift (80% one repetition maximum), and countermovement jump. Bar displacement, peak and mean velocity, peak and mean force, and jump height were calculated using the GPT, a three-dimensional motion capture system (Motion Analysis Corporation; 150 Hz), and a force plate (Kistler; 1500 Hz). Least products regression were used to compare agreeability between devices. A within-trial one-way ANOVA, typical error (TE; %), and smallest worthwhile change (SWC) were used to assess reliability. Regression analysis resulted in R2 values of >0.85 for all variables excluding deadlift mean velocity (R2 = 0.54–0.69). Significant differences were observed between visits 3-2 for bench press bar displacement (0.395 ± 0.055 m; 0.383 ± 0.053 m), and deadlift bar displacement (0.557 ± 0.034 m; 0.568 ± 0.034 m). No other significant differences were found. Low to moderate TE (0.6–8.8%) were found for all variables, with SWC ranging 1.7–7.4%. The data provides evidence that the GPT can be used to measure kinetic and kinematic outputs, however, care should be taken when monitoring deadlift performance. 相似文献
5.
Thomas H. Champney 《Anatomical sciences education》2019,12(4):432-434
The value that willed body donors provide to medical education is priceless. Their precious gift helps to teach anatomy, spatial relationships between morphological structures, anatomical variation, and professionalism to medical students in a way that plastic models, podcasts, and lectures cannot. They are also an important resource for medical research and a wide variety of postgraduate training opportunities. While many body donation programs throughout the world are nonprofit organizations, there are body donation companies in the United States that sell donors for-profit. These “body brokers” have accumulated large profits from this business. It is incongruous that others would profit from such a priceless, freely donated gift. To prevent this incongruity, it is proposed that the international anatomical community develop a normative culture (a bioethos) for body donation programs. This would involve the conscious and systematic development of ethical principles for the day-to-day policies and practices of institutions that collect and use human bodies. With the development of this bioethos, a cultural shift in how donors are treated would occur and, over time, this would become the normal practice. These principles would become fundamental and foundational for the procurement and use of priceless human tissues. 相似文献
6.
In the IR field it is clear that the value of a system depends on the cost and benefit profiles of its users. It would seem obvious that different users would prefer different systems. In the TREC-9 filtering track, systems are evaluated by a utility measure specifying a given cost and benefit. However, in the study of decision systems it is known that, in some cases, one system may be unconditionally better than another. In this paper we employ a decision theoretic approach to find conditions under which an Information Filtering (IF) system is unconditionally superior to another for all users regardless of their cost and benefit profiles.It is well known that if two IF systems have equal precision the system with better recall will be preferred by all users. Similarly, with equal recall, better precision is universally preferred. We confirm these known results and discover an unexpected dominance relation in which a system with lower recall will be universally preferred provided its precision is sufficiently higher. 相似文献
7.
Paul Morris 《比较教育学》1996,32(1):95-110
The economic success of some of the countries within the East Asian region has generated a range of studies which have attempted to identify the sources of that growth. One strand within these analyses has focused on the critical role of schooling in the accumulation of human capital. This paper examines the role which education has played in the rapid development of the four 'Asian Tigers'; namely: Hong Kong, Taiwan, South Korea and Singapore. It is argued that whilst patterns of educational provision displayed some common features there were also significant differences in other areas such as the role of the state, sources of educational funding, the role of technical education and of the school curriculum. 相似文献
8.
Our argument in this paper is that the model of literary progression which Bakhtin (1981, 1986) expounds in his writing on the chronotope can generate insight into the processes through which pupils improve their writing. We suggest more generally that there are concepts and clues in Bakhtin's historical model of the development of the European novel and in his theory of dialogue which can be helpful in both the evaluation and teaching of classroom writing. 相似文献
9.
10.
Thomas L. Bonn 《Publishing Research Quarterly》1994,10(1):55-65
The role of the literary agent and the reception granted agents by publishers have changed markedly over the course of the
twentieth century. Henry Holt’s views of agents, written in the first decade of the century, help define the status and activities
of agents at that time. These are compared with the role of agents today, using archival sources, the book trade literature,
and interviews.
Thomas L. Bonn, review editor of this journal, is a librarian, Library at State University College at Cortland. He is the
author ofUnder Cover: An Illustrated History of American Mass Market Paperbacks andHeavy Traffic and High Culture: The New American Library as Literary Gatekeeper. He is working on a study of American literary agents. 相似文献