全文获取类型
收费全文 | 375篇 |
免费 | 7篇 |
专业分类
教育 | 292篇 |
科学研究 | 19篇 |
各国文化 | 3篇 |
体育 | 22篇 |
文化理论 | 8篇 |
信息传播 | 38篇 |
出版年
2022年 | 4篇 |
2021年 | 8篇 |
2020年 | 8篇 |
2019年 | 6篇 |
2018年 | 17篇 |
2017年 | 8篇 |
2016年 | 15篇 |
2015年 | 9篇 |
2014年 | 4篇 |
2013年 | 89篇 |
2012年 | 10篇 |
2011年 | 7篇 |
2010年 | 8篇 |
2009年 | 9篇 |
2008年 | 10篇 |
2007年 | 7篇 |
2006年 | 8篇 |
2005年 | 7篇 |
2004年 | 6篇 |
2003年 | 11篇 |
2002年 | 4篇 |
2001年 | 7篇 |
2000年 | 9篇 |
1999年 | 10篇 |
1998年 | 3篇 |
1997年 | 3篇 |
1996年 | 3篇 |
1994年 | 2篇 |
1993年 | 2篇 |
1992年 | 2篇 |
1991年 | 3篇 |
1990年 | 2篇 |
1989年 | 4篇 |
1988年 | 5篇 |
1987年 | 5篇 |
1984年 | 2篇 |
1983年 | 2篇 |
1981年 | 5篇 |
1980年 | 9篇 |
1979年 | 5篇 |
1978年 | 3篇 |
1977年 | 4篇 |
1976年 | 6篇 |
1975年 | 3篇 |
1974年 | 5篇 |
1973年 | 2篇 |
1972年 | 2篇 |
1971年 | 2篇 |
1965年 | 2篇 |
1912年 | 2篇 |
排序方式: 共有382条查询结果,搜索用时 312 毫秒
71.
72.
This paper considers street performance, or busking,focusing on differences between performance in thisenvironment compared with the standard concertsetting. First, in contrast with a set, known ticketprice, the price of street performance isendogenously determined. Second, busking generallyinvolves a joint product: music and charity, wherecharity is produced internally by the audience andhas as its principal input the price paid for music.We show that these facts call into question somegeneral conclusions of conventional public financemodels, which suggest that the major efficiency problemwith busking is its inability to preventfreeriding behavior, and that freeriding, while efficient at the individuallevel, is inefficient at the societal level. In contrast, we argue in thispaper that busking, with freeriding and all, is not unambiguously inferior toconcert hall performance in terms of efficiency. 相似文献
73.
74.
75.
76.
77.
78.
Mackenzie Brooks 《College & Undergraduate Libraries》2017,24(2-4):467-481
ABSTRACTThis case study describes two iterations of a Digital Humanities (DH) “Studio” course on scholarly text encoding as a model for a DH curriculum at a small liberal arts college. Designed to accompany a three-credit humanities course, the one-credit DH Studios are taught by library faculty. The paired courses share a final project—a digital edition of a short work of literature encoded in the Text Encoding Initiative. The DH Studio creates a methodology-focused environment for students to practice information and digital literacies. 相似文献
79.
80.
The lower body muscle activation of intermediate to experienced kayakers when navigating white water
Misha Murtagh Darrell Brooks Jonathan Sinclair 《European Journal of Sport Science》2016,16(8):1130-1136
In white-water kayaking, the legs play a vital part in turning, stabilising and bracing actions. To date, there has been no reported information on neuromuscular activation of the legs in an authentic white-water environment. The aim of the current study was to identify lower body muscle activation, using ‘in-boat’ electromyography (EMG), whilst navigating a white-water run. Ten experienced male kayakers (age 31.5?±?12.5 yr, intermediate to advanced experience) completed three successful runs of an international standard white-water course (grade 3 rapids), targeting right and left sides of the course, in a zigzag formation. Surface EMG (sEMG) outputs were generated, bilaterally, for the rectus femoris (RF), vastus lateralis, biceps femoris and gastrocnemius, expressed as a percentage of a dynamic maximal voluntary contraction (dMVC). Only RF showed significantly higher activation than any muscle on the left side of the body, and only on the left side of the course (P?=?.004; ETA2?=?0.56). Other results showed no significant difference between muscle activation in the right and left legs during each run, nor when assessed at either the right or left side of the course (P?>?.05). These findings indicate that contralateral symmetry in lower limb muscle activation is evident during white-water kayaking. This symmetry may provide a stable base to allow more asymmetrical upper body and trunk movements to be fully optimised. Lower body symmetry development should be considered useful in targeted training programmes for white-water kayakers. 相似文献