首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   52595篇
  免费   718篇
  国内免费   307篇
教育   36511篇
科学研究   5627篇
各国文化   451篇
体育   4129篇
综合类   679篇
文化理论   388篇
信息传播   5835篇
  2022年   296篇
  2021年   515篇
  2020年   772篇
  2019年   946篇
  2018年   1228篇
  2017年   1411篇
  2016年   1247篇
  2015年   1036篇
  2014年   1475篇
  2013年   8702篇
  2012年   1680篇
  2011年   1839篇
  2010年   1616篇
  2009年   1543篇
  2008年   1691篇
  2007年   1728篇
  2006年   1562篇
  2005年   1365篇
  2004年   1146篇
  2003年   1044篇
  2002年   1034篇
  2001年   1001篇
  2000年   923篇
  1999年   801篇
  1998年   454篇
  1997年   454篇
  1996年   517篇
  1995年   408篇
  1994年   453篇
  1993年   416篇
  1992年   616篇
  1991年   596篇
  1990年   603篇
  1989年   582篇
  1988年   540篇
  1987年   500篇
  1986年   558篇
  1985年   615篇
  1984年   522篇
  1983年   544篇
  1982年   447篇
  1981年   430篇
  1980年   377篇
  1979年   546篇
  1978年   473篇
  1977年   398篇
  1976年   362篇
  1975年   315篇
  1974年   286篇
  1973年   308篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
981.
Students in a large undergraduate biology course were expected to write a scientific report as a key part of their course design. This study investigates the quality of learning arising from the writing experience and how it relates to the quality of students’ preconceptions of learning through writing and their perceptions of their writing program that led to their report. Closed‐ended questionnaires investigating student conceptions and perceptions of writing, and approaches to writing, were completed by 121 students. Significant associations were found amongst qualitatively different prior and post conceptions of writing, approaches to writing and achievement. The results of the analyses suggest that the effective support of student experiences of writing reports requires teachers to be aware of the type of conceptions that students bring to their course and the perceptions they hold about the purpose of the writing program in which they are engaged.  相似文献   
982.
Components of attention during infants' manipulative exploration   总被引:1,自引:1,他引:1  
H A Ruff 《Child development》1986,57(1):105-114
The purpose of the project was to investigate attention in infants as they manipulate objects. It was hypothesized that examining, in contrast to other activity, reflects focused attention and active intake of information. The first study with 7- and 12-month-olds supported the hypothesis; examining declined with increasing familiarity, while other behaviors, such as mouthing and banging, did not, and examining occurred before other behaviors temporally. The latency to examine declined significantly with age. The second and third studies investigated the effects of age and familiarity on both latency to and duration of examining. Latency again decreased with age but did not change with increasing familiarity. In contrast, duration of examining did not vary systematically with age but declined sharply with familiarity. In a fourth study, latency to examine and duration of examining were related to different measures of attention at 3 1/2 years. The combination of results suggests that the latency and duration measures reflect different aspects of attention--a short-term reaction to object novelty and a more sustained response to the object and its characteristics.  相似文献   
983.
Most traditional concepts about creative writers include the idea that creative talent is evident early - that productive and talented writers began their careers at a young age. Yet few empirical studies have actually examined this supposition. A study of 986 creative writers from the twentieth century investigated the relationship between the age at first publication and measures of productivity (numbers of works produced) and success (winning a Nobel or Pulitzer prize). While significant relationships were found between an early debut and increased productivity in poetry and total number of works, it is more noteworthy that a writer's age at first publication was not significantly related to total productivity in fiction or success. Implications for creative writers and teachers of creative writing are discussed, along with how these findings might be incorporated into the current standards-based reform efforts.  相似文献   
984.
What is a criterion-referenced test? What are the good and bad points of authentic assessment, criterion-referenced testing, and Item Response Theory?  相似文献   
985.
Educators are currently attempting to integrate computers into the classroom, in order to humanize their use. The strategies that have been adopted, however, are primarily logistical and ignore the philosophy that underpins this technology. It is argued in this paper that educational technology will not be humanized until it is understood to be sustained by a philosophy other than technological rationality, and thus is provided with a human base. The life-world (Lebenswelt) is identified as a proper foundation for technology, because technological rationality is illustrated to be a modality of human expression. When this is the case, technology is placed in the service of humankind, for it cannot be conceived as the genesis of personal freedom.
Zusammenfassung Gegenwärtig sind Pädagogen um die Integration von Computern ins Klassenzimmer bemüht, um deren Gebrauch zu humanisieren. Die dabei angewandten Strategien sind jedoch primär logistisch und ignorieren die theoretischen Voraussetzungen, auf die sich diese Technologie stützt. In diesem Bericht wird argumentiert, daß die Bildungstechnologie so lange nicht humanisiert wird, bis sie nicht in einem anderen Sinn als dem der technologischen Rationalität verbunden wird und auf eine humane Grundlage gestellt ist. Die Lebenswelt wird als ein wahres Fundament der Technologie identifiziert, da technologische Rationalität als eine Modalität menschlichen Ausdrucks dargestellt wird. Wenn dies der Fall ist, wird die Technologie in den Dienst der Menschheit gestellt, da sie nicht als Nemesis persönlicher Freiheit angesehen werden kann.

Résumé Les pédagogues, aujourd'hui, tentent de faire entrer l'ordinateur dans la salle de classe, afin de ramener son utilisation à l'échelle humaine. Cependant, les stratégies adoptées demeurent de l'ordre de la logistique et ignore tout de la philosophie qui étaye cette technologie. Dans cet article, il est argué que l'on ne saurait humaniser la technologie au sein de l'enseignement, tant qu'il n'est pas entendu qu'une philosophie autre que la rationalité technologique la sous-tend, la dotant ainsi d'un fondement humain; l'environnement naturel (Lebenswelt) constitue la véritable base de la technologie car la rationalité ne représente qu'une modalité de l'expression humaine. Dans ce cas, la technologie est placée au service de l'humanité et ne saurait être conçue comme sanction de la liberté individuelle.
  相似文献   
986.
987.
988.
Lincoln Memorial University‐DeBusk College of Osteopathic Medicine (LMU‐DCOM) offers an optional three‐week summer Anatomy Boot Camp course (ABC) to facilitate students' transition into medical school and promote retention of anatomy subject matter. The pre‐matriculation program is a supplemental instruction course that utilizes a small group learning format. Boot camp instruction is led by teaching assistants and two anatomy professors. Enrollees gain early exposure to Medical Gross Anatomy (MGA) course subject matter, which is taught in the fall semester, and learn study skills necessary to excel in medical school. No grade is assigned for the course, therefore participants can study without the fear of potentially affecting grades. This study evaluates the effectiveness of the LMU‐DCOM ABC course using data from four consecutive summers. Independent two‐sample t‐tests were used to compare ABC to non‐ABC students for the following variables: incoming grade point average (GPA) and Medical College Admission Test® (MCAT®) scores, MGA written and laboratory practical examination grades, and final MGA course grade. Additionally, a 26‐question survey was administered to 2012–2014 boot camp participants. There were no significant differences in incoming GPA and MCAT scores. However, boot campers scored significantly higher on the first two lecture and laboratory examinations (P < 0.05) for each year of the study. Thereafter scores varied less, suggesting a faster head start for boot camp participants. Mean MGA final grade was on average 3% higher for the boot camp cohort. The survey feedback supports that the ABC course assists with the academic and social transition into medical school. Anat Sci Educ 10: 215–223. © 2016 American Association of Anatomists.  相似文献   
989.
990.
INTRODUCTION Computer simulation of traffic can give insightinto a wide variety of phenomena observed in realtraffic flow; lead to a greater understanding of itsbasic principles; and can also help researchers ex-plore the effects of implementing new traffic rulesand control systems without doing potentially ha-zardous experiments with real traffic. Approachesthat apply classic differential equation methods tomodel the nonlinear dynamics of this problem candescribe only part of the ph…  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号