全文获取类型
收费全文 | 1008篇 |
免费 | 44篇 |
国内免费 | 1篇 |
专业分类
教育 | 779篇 |
科学研究 | 42篇 |
各国文化 | 17篇 |
体育 | 69篇 |
文化理论 | 11篇 |
信息传播 | 135篇 |
出版年
2023年 | 3篇 |
2022年 | 13篇 |
2021年 | 18篇 |
2020年 | 22篇 |
2019年 | 39篇 |
2018年 | 44篇 |
2017年 | 37篇 |
2016年 | 41篇 |
2015年 | 42篇 |
2014年 | 34篇 |
2013年 | 227篇 |
2012年 | 35篇 |
2011年 | 38篇 |
2010年 | 23篇 |
2009年 | 22篇 |
2008年 | 20篇 |
2007年 | 24篇 |
2006年 | 26篇 |
2005年 | 24篇 |
2004年 | 24篇 |
2003年 | 27篇 |
2002年 | 19篇 |
2001年 | 10篇 |
2000年 | 11篇 |
1999年 | 17篇 |
1998年 | 28篇 |
1997年 | 13篇 |
1996年 | 13篇 |
1995年 | 22篇 |
1994年 | 7篇 |
1993年 | 9篇 |
1992年 | 13篇 |
1991年 | 11篇 |
1990年 | 9篇 |
1989年 | 11篇 |
1988年 | 9篇 |
1987年 | 8篇 |
1986年 | 6篇 |
1985年 | 8篇 |
1984年 | 6篇 |
1983年 | 4篇 |
1982年 | 6篇 |
1981年 | 2篇 |
1979年 | 4篇 |
1976年 | 4篇 |
1973年 | 2篇 |
1906年 | 1篇 |
1867年 | 2篇 |
1833年 | 2篇 |
1830年 | 1篇 |
排序方式: 共有1053条查询结果,搜索用时 15 毫秒
1.
2.
Bibliometric analysis to identify core reference sources of virtual reference transactions 总被引:1,自引:0,他引:1
As the use of electronic reference sources becomes commonplace, virtual reference services are expanding in scope, modes, and popularity. Simultaneously, reference practices are evolving as well. One concept that may be challenged by these trends is the notion of the core reference collection. What are the sources that form this core collection, and what are its characteristics? Are similar sources used to answer users' questions in virtual and traditional reference? How do core collections of public and academic libraries differ? An analysis of 1851 e-mail and chat reference transactions from public and academic libraries reveals that the notion of a core reference collection persists in the world of virtual reference services. In both types of libraries, responses to patrons showed a skewed bibliographic distribution; librarians used a small group of sources to answer most of the questions. Almost all sources used were electronic. Academic libraries tended to make greater use of fee-based sources, but public libraries more often used sources freely-available on the Web. 相似文献
3.
4.
5.
6.
7.
Alison M. Larsen 《期刊图书馆员》2016,71(1):39-55
A bibliography of periodicals focused on planning within the urban studies field is presented. The bibliography contains scholarly, trade, and popular titles. Each entry contains identical categories of information (where each category is applicable), including an annotation. The bibliography is meant to aid in collection development in this subject area. 相似文献
8.
Mehdi Kargarfard Eddie T.C. Lam Ardalan Shariat Ina Shaw Brandon S. Shaw Shamsul B.M. Tamrin 《Journal of sports sciences》2016,34(10):959-965
It is believed that sport massage after intensive exercise might improve power and perceptual recovery in athletes. However, few studies have been done in this area. This study aimed to examine the effect of massage on the performance of bodybuilders. Thirty experienced male bodybuilders were randomly assigned to either a massage group (n = 15) or a control group (n = 15). Both groups performed five repetition sets at 75–77% of 1RM of knee extensor and flexor muscle groups. The massage group then received a 30-min massage after the exercise protocol while the control group maintained their normal passive recovery. Criteria under investigation included: plasma creatine kinase (CK) level, agility test, vertical jump test, isometric torque test, and perception of soreness. All variables were measured over 6 time periods: baseline, immediately after the DOMS inducing protocol, right after the massage, and 24, 48, and 72 h after the massage. Both groups showed significant (P < .001) decreases in jumping, agility performance, and isometric torque, but significant (P < .001) increases in CK and muscle soreness levels. The massage group in general demonstrated a better recovery rate. As such, a post-exercise massage session can improve the exercise performance and recovery rate in male bodybuilders after intensive exercise. 相似文献
9.
Erica M. Buckeridge Anthony M.J. Bull Alison H. McGregor 《Journal of sports sciences》2016,34(4):369-378
Lumbar-pelvic kinematics change in response to increasing rowing stroke rates, but little is known about the effect of incremental stroke rates on changes in joint kinetics and their implications for injury. The purpose of this study was to quantify the effects of incremental rowing intensities on lower limb and lumbar-pelvic kinetics. Twelve female rowers performed an incremental test on a rowing ergometer. Kinematic data of rowers’ ankle, knee, hip and lumbar-pelvic joints, as well as external forces at the handle, seat and foot-stretchers of the rowing machine were recorded. Inter-segmental moments and forces were calculated using inverse dynamics and were compared across stroke rates using repeated measures ANOVA. Rowers exhibited increases in peak ankle and L5/S1 extensor moments, reductions in peak knee moments and no change in peak hip moments, with respect to stroke rate. Large shear and compressive forces were seen at L5/S1 and increased with stroke rate (P < 0.05). This coincided with increased levels of lumbar-pelvic flexion. High levels of lumbar-pelvic loading at higher stroke rates have implications with respect to injury and indicated that technique was declining, leading to increased lumbar-pelvic flexion. Such changes are not advantageous to performance and can potentially increase the risk of developing injuries. 相似文献
10.
Alison A. Carr-Chellman 《British journal of educational technology : journal of the Council for Educational Technology》2006,37(1):5-15
This study engages the question of where successful emerging (pretenure) scholars are most likely to publish their research. Spurred on by findings of a survey of leaders in the field of educational technology/instructional design and technology (ET/IDT) to determine the advisability of a rank‐ordered list of journals for the purposes of decision making about tenure and promotion, this document analysis presents the results of measuring the conventional wisdom against the actual practices of emerging scholars. Findings suggest that pretenure scholars publish in a wide variety of outlets including some, but not all of those identified in earlier surveys. While it is understood that the tenure decision is a complicated one—based on many criteria (eg, teaching, service, grantsmanship, etc), research and scholarship remain primary determinants. Therefore, these findings will be useful to emerging scholars and to those decision makers seeking direction regarding research outlets. The study is limited by a focus from an original survey conducted in 2003 to primarily North American scholars as participants, however, international considerations are included. The findings indicate that a list of journals for tenure decision making may not be advisable at this point in the development of the field of ET/IDT. 相似文献