全文获取类型
收费全文 | 1847篇 |
免费 | 45篇 |
国内免费 | 2篇 |
专业分类
教育 | 1385篇 |
科学研究 | 92篇 |
各国文化 | 36篇 |
体育 | 173篇 |
文化理论 | 16篇 |
信息传播 | 192篇 |
出版年
2023年 | 10篇 |
2022年 | 12篇 |
2021年 | 29篇 |
2020年 | 44篇 |
2019年 | 62篇 |
2018年 | 86篇 |
2017年 | 93篇 |
2016年 | 99篇 |
2015年 | 46篇 |
2014年 | 72篇 |
2013年 | 455篇 |
2012年 | 51篇 |
2011年 | 66篇 |
2010年 | 46篇 |
2009年 | 58篇 |
2008年 | 46篇 |
2007年 | 50篇 |
2006年 | 39篇 |
2005年 | 30篇 |
2004年 | 40篇 |
2003年 | 33篇 |
2002年 | 34篇 |
2001年 | 22篇 |
2000年 | 18篇 |
1999年 | 17篇 |
1998年 | 17篇 |
1997年 | 22篇 |
1996年 | 23篇 |
1995年 | 15篇 |
1994年 | 21篇 |
1993年 | 20篇 |
1992年 | 10篇 |
1991年 | 15篇 |
1990年 | 11篇 |
1989年 | 18篇 |
1988年 | 12篇 |
1987年 | 12篇 |
1986年 | 10篇 |
1985年 | 9篇 |
1984年 | 11篇 |
1983年 | 7篇 |
1982年 | 12篇 |
1981年 | 10篇 |
1980年 | 13篇 |
1979年 | 7篇 |
1978年 | 6篇 |
1977年 | 6篇 |
1976年 | 8篇 |
1975年 | 7篇 |
1974年 | 6篇 |
排序方式: 共有1894条查询结果,搜索用时 15 毫秒
121.
Spatial visualization ability and laparoscopic skills in novice learners: Evaluating stereoscopic versus monoscopic visualizations 下载免费PDF全文
Victoria A. Roach Manisha R. Mistry Timothy D. Wilson 《Anatomical sciences education》2014,7(4):295-301
Elevated spatial visualization ability (Vz) is thought to influence surgical skill acquisition and performance. Current research suggests that stereo visualization technology and its association with skill performance may confer perceptual advantages. This is of particular interest in laparoscopic skill training, where stereo visualization may confer learning advantages to novices of variant Vz. This study explored laparoscopic skill performance scores in novices with variable spatial ability utilizing stereoscopic and traditional monoscopic visualization paradigms. Utilizing the McGill Inanimate System for Teaching and Evaluating Laparoscopic Skills (MISTELS) scoring protocol it was hypothesized that individuals with high spatial visualization ability (HVz) would achieve higher overall and individual MISTELS task scores as compared to low spatial visualization ability (LVz) counterparts. Further, we also hypothesized that a difference would exist between HVz and LVz individual scores based on the viewing modality employed. No significant difference was observed between HVz and LVz individuals for MISTELS tasks scores, overall or individually under both viewing modalities, despite higher average MISTELS scores for HVz individuals. The lack of difference between scores obtained under the stereo modality suggested that the additional depth that is conferred by the stereoscopic visualization may act to enhance performance for individuals with LVz, potentially equilibrating their performance with their HVz peers. Further experimentation is required to better ascertain the effects of stereo visualization in individuals of high and low Vz, though it appears stereoscopic visualizations could serve as a prosthetic to enhance skill performance. Anat Sci Educ 7: 295–301. © 2013 American Association of Anatomists. 相似文献
122.
A retrospective look at replacing face‐to‐face embryology instruction with online lectures in a human anatomy course 下载免费PDF全文
Embryology is integrated into the Clinically Oriented Anatomy course at the Texas Tech University Health Sciences Center School of Medicine. Before 2008, the same instructor presented embryology in 13 face‐to‐face lectures distributed by organ systems throughout the course. For the 2008 and 2009 offerings of the course, a hybrid embryology instruction model with four face‐to‐face classes that supplemented online recorded lectures was used. One instructor delivered the lectures face‐to‐face in 2007 and by online videos in 2008–2009, while a second instructor provided the supplemental face‐to‐face classes in 2008–2009. The same embryology learning objectives and selected examination questions were used for each of the three years. This allowed direct comparison of learning outcomes, as measured by examination performance, for students receiving only face‐to‐face embryology instruction versus the hybrid approach. Comparison of the face‐to‐face lectures to the hybrid approach showed no difference in overall class performance on embryology questions that were used all three years. Moreover, there was no differential effect of the delivery method on the examination scores for bottom quartile students. Students completed an end‐of‐course survey to assess their opinions. They rated the two forms of delivery similarly on a six‐point Likert scale and reported that face‐to‐face lectures have the advantage of allowing them to interact with the instructor, whereas online lectures could be paused, replayed, and viewed at any time. These experiences suggest the need for well‐designed prospective studies to determine whether online lectures can be used to enhance the efficacy of embryology instruction. Anat Sci Educ 7: 234–241. © 2013 American Association of Anatomists. 相似文献
123.
This article describes a half-day preconference that focused on the library as publisher. It examined how the movement from print to online publication has impacted the roles of libraries and their ability to take on new roles as publishers. The session explored the benefits of libraries becoming publishers, and discussed Open Access, what it is and is not and its importance to libraries and scholarly communication. A detailed case study of the publishing operations of the University Library System at the University of Pittsburgh was presented as an example of a successful library publishing program. The session provided an opportunity for participants to discover ways that libraries can be involved in publishing. 相似文献
124.
A previous study showed that pairs of students interacting in a second language produced more words when they were assigned a fictitious expert position in a specific competence dimension than when they were assigned a nonexpert position. It has also been shown that the usual level of expertise has an impact on the assigned fictitious expertise effect. The present study was designed to determine whether the processing capacity allotted to the current task could partly determine performance. A given position of expertise may demand a large or small attentional capacity. Two experiments were conducted using a dual-task paradigm. As expected, the different expertise positions led to different reaction times on the secondary task. The second experiment showed that the impact of assigning a position of expertise to students depends on their usual academic standing. This study supports the idea that in interactive situations, performance variations as a function of the expertise position can be partially explained by differences in the processing resources allocated to the task. Implications for teaching are discussed. 相似文献
125.
126.
127.
128.
129.
This 4-week prospective study examined whether the use of life-management strategies mediates the relationship between implementation planning and short-term progress on physical activity goals. In particular the strategies of elective selection, compensation, and loss-based selection were disentangled to assess their specific mediating effects. Results from a sample of 131undergraduate students showed that, as a composite, life-management strategies fully mediated the relationship between planning and goal progress. More specifically, decomposing the effects demonstrated that only elective selection and compensation mediated the association between planning and greater progress on a personal physical activity goal. Results are discussed in light of their practical implications and contributions to the personal goal literature. 相似文献
130.
The UK Parliament passed the Freedom of Information Act (FOIA) in November 2000 after 3 years of government White Papers, consultation papers, and various Bills. The author served as special adviser to the House of Commons Select Committee on Public Administration which oversaw the Government proposals for legislation and the progress of the Bill into the House of Commons. The FOIA introduced pro-active publication of information via Publication Schemes, which were introduced on a staggered basis across the public sector and on January 1, 2005, rights of individual access were granted to individuals. The Act covers well over 100,000 public authorities in the UK and includes both Houses of Parliament. There is a power to add private bodies to the Act's coverage. The Act covers UK, English, Welsh, and Northern Irish public authorities. Scotland has its own FOIA which was enacted by the Scottish Parliament in 2002. The paper will examine the operation of the UK legislation and the role of the Information Commissioner and the Information Tribunal which deal with complaints of refusal and appeals respectively. The jurisprudence has been voluminous and now the English courts are beginning to hear appeals from the tribunal. The article will examine the major trends of the legislation and the problems presented by the legislation. The Government has already issued vetoes under the Act overriding the Commissioner's decision to grant access to the Cabinet papers relating to the Cabinet discussion on entering into war with Iraq and then on devolution of power to Scotland, Northern Ireland, and Wales. The decisions to open up the files on MPs expenses have caused one of the major constitutional crises in the UK in the last 75 years. As well as examining the way the Act has been interpreted, the author will essay some preliminary analyses of the impact of the Act on the realization of government objectives in passing the Act. The FOIA does sit alongside other legislation allowing access to personal files and access to environmental information and the whole information debate is set in the context of heightened sensitivity and secrecy in time of the war on terror and the state's increasing capacity to demand, store, and share information. The UK experience of the information debate will be examined. 相似文献