全文获取类型
| 收费全文 | 9926篇 |
| 免费 | 88篇 |
| 国内免费 | 5篇 |
专业分类
| 教育 | 6817篇 |
| 科学研究 | 1269篇 |
| 各国文化 | 47篇 |
| 体育 | 670篇 |
| 文化理论 | 132篇 |
| 信息传播 | 1084篇 |
出版年
| 2022年 | 39篇 |
| 2021年 | 64篇 |
| 2020年 | 101篇 |
| 2019年 | 159篇 |
| 2018年 | 871篇 |
| 2017年 | 893篇 |
| 2016年 | 656篇 |
| 2015年 | 163篇 |
| 2014年 | 165篇 |
| 2013年 | 1091篇 |
| 2012年 | 218篇 |
| 2011年 | 444篇 |
| 2010年 | 412篇 |
| 2009年 | 275篇 |
| 2008年 | 341篇 |
| 2007年 | 449篇 |
| 2006年 | 111篇 |
| 2005年 | 182篇 |
| 2004年 | 231篇 |
| 2003年 | 168篇 |
| 2002年 | 114篇 |
| 2001年 | 119篇 |
| 2000年 | 156篇 |
| 1999年 | 126篇 |
| 1998年 | 57篇 |
| 1997年 | 60篇 |
| 1996年 | 64篇 |
| 1995年 | 58篇 |
| 1994年 | 59篇 |
| 1993年 | 51篇 |
| 1992年 | 110篇 |
| 1991年 | 96篇 |
| 1990年 | 84篇 |
| 1989年 | 116篇 |
| 1988年 | 77篇 |
| 1987年 | 74篇 |
| 1986年 | 78篇 |
| 1985年 | 96篇 |
| 1984年 | 70篇 |
| 1983年 | 72篇 |
| 1982年 | 75篇 |
| 1981年 | 58篇 |
| 1980年 | 65篇 |
| 1979年 | 73篇 |
| 1978年 | 74篇 |
| 1977年 | 56篇 |
| 1976年 | 61篇 |
| 1974年 | 47篇 |
| 1973年 | 43篇 |
| 1969年 | 41篇 |
排序方式： 共有10000条查询结果，搜索用时 15 毫秒
61.
62.
63.
Dylan J.H.A. Henssen Loes van den Heuvel Guido De Jong Marc A.T.M. Vorstenbosch Anne-Marie van Cappellen van Walsum Marianne M. Van den Hurk Jan G.M. Kooloos Ronald H.M.A. Bartels 《Anatomical sciences education》2020,13(3):353-365
Neuroanatomy education is a challenging field which could benefit from modern innovations, such as augmented reality (AR) applications. This study investigates the differences on test scores, cognitive load, and motivation after neuroanatomy learning using AR applications or using cross-sections of the brain. Prior to two practical assignments, a pretest (extended matching questions, double-choice questions and a test on cross-sectional anatomy) and a mental rotation test (MRT) were completed. Sex and MRT scores were used to stratify students over the two groups. The two practical assignments were designed to study (1) general brain anatomy and (2) subcortical structures. Subsequently, participants completed a posttest similar to the pretest and a motivational questionnaire. Finally, a focus group interview was conducted to appraise participants’ perceptions. Medical and biomedical students (n = 31); 19 males (61.3%) and 12 females (38.7%), mean age 19.2 ± 1.7 years participated in this experiment. Students who worked with cross-sections (n = 16) showed significantly more improvement on test scores than students who worked with GreyMapp-AR (P = 0.035) (n = 15). Further analysis showed that this difference was primarily caused by significant improvement on the cross-sectional questions. Students in the cross-section group, moreover, experienced a significantly higher germane (P = 0.009) and extraneous cognitive load (P = 0.016) than students in the GreyMapp-AR group. No significant differences were found in motivational scores. To conclude, this study suggests that AR applications can play a role in future anatomy education as an add-on educational tool, especially in learning three-dimensional relations of anatomical structures. 相似文献
64.
This paper demonstrates the application of module arithmetic for controlling the level of information security by a new technique referred as integer splitting. The basic definitions and concepts of the method are provided. The mathematical function of arising transformation is described in detail; its properties were studied and the basic theorems were proven that justify the use of splitting in practical applications. An active system was designed and characteristic cases of its operation are considered. 相似文献
65.
66.
67.
68.
K. S. Yakovlev D. A. Makarov E. S. Baskin 《Scientific and Technical Information Processing》2015,42(5):347-358
In the article we solve path planning task for an agent being multirotor unmanned aerial vehicle (multicopter). We propose an approach of estimating path geometry constraints based on UAV flight dynamics model and control constraints. Than we introduce a new path finding method which takes into consideration those geometry constraints and study this method both theoretically and empirically. 相似文献
69.
70.
The N1 effect is an electrophysiological marker of visual specialization for print. The phonological mapping hypothesis (Maurer & McCandliss, 2007) posits that the left-lateralized effect reflects grapheme-phoneme integration. In this event-related potential study, first (age = 7.06 years, N = 32) and third-grade readers (age = 9.29 years, N = 28) were presented with pairs of pseudowords and Armenian character strings in a novel implicit same-different paradigm. To test the phonological mapping hypothesis, stimuli were presented in visual-only and audiovisual conditions. The results demonstrated that tuning for print already emerges in first grade. Moreover, the parallel presentation of auditory stimuli enhanced the N1 effect suggesting a role of orthographic-phonological mapping in the development of specialization for print. 相似文献