全文获取类型
收费全文 | 117962篇 |
免费 | 1891篇 |
国内免费 | 234篇 |
专业分类
教育 | 81397篇 |
科学研究 | 13304篇 |
各国文化 | 1996篇 |
体育 | 9414篇 |
综合类 | 172篇 |
文化理论 | 1063篇 |
信息传播 | 12741篇 |
出版年
2021年 | 930篇 |
2020年 | 1680篇 |
2019年 | 2599篇 |
2018年 | 3086篇 |
2017年 | 3381篇 |
2016年 | 3434篇 |
2015年 | 2351篇 |
2014年 | 3226篇 |
2013年 | 27544篇 |
2012年 | 2388篇 |
2011年 | 2717篇 |
2010年 | 2346篇 |
2009年 | 2644篇 |
2008年 | 2395篇 |
2007年 | 2131篇 |
2006年 | 2344篇 |
2005年 | 2337篇 |
2004年 | 3034篇 |
2003年 | 2356篇 |
2002年 | 2150篇 |
2001年 | 2025篇 |
2000年 | 1605篇 |
1999年 | 1361篇 |
1998年 | 1285篇 |
1997年 | 1355篇 |
1996年 | 1562篇 |
1995年 | 1366篇 |
1994年 | 1353篇 |
1993年 | 1352篇 |
1992年 | 1367篇 |
1991年 | 1262篇 |
1990年 | 1285篇 |
1989年 | 1183篇 |
1988年 | 1031篇 |
1987年 | 980篇 |
1986年 | 998篇 |
1985年 | 1240篇 |
1984年 | 1145篇 |
1983年 | 1090篇 |
1982年 | 1078篇 |
1981年 | 1007篇 |
1980年 | 967篇 |
1979年 | 1040篇 |
1978年 | 1032篇 |
1977年 | 945篇 |
1976年 | 866篇 |
1975年 | 697篇 |
1974年 | 695篇 |
1973年 | 666篇 |
1972年 | 496篇 |
排序方式: 共有10000条查询结果,搜索用时 218 毫秒
41.
Philip A. Ebert 《Journal of Adventure Education & Outdoor Learning》2019,19(1):84-95
In this article, I explore a Bayesian approach to avalanche decision-making. I motivate this perspective by highlighting a version of the base-rate fallacy and show that a similar pattern applies to decision-making in avalanche-terrain. I then draw out three theoretical lessons from adopting a Bayesian approach and discuss these lessons critically. Lastly, I highlight a number of challenges for avalanche educators when incorporating the Bayesian perspective in their curriculum. 相似文献
42.
Baris Uslu Alper Calikoglu F. Nevra Seggie Steven H. Seggie 《Higher Education Quarterly》2019,73(3):285-311
The innovative teaching, knowledge and technology production and societal service activities of academics are largely discussed within the entrepreneurial university discourse in Higher Education journals. Therefore, this research focuses on a meta‐synthesis of Higher Education articles to better understand the concepts of the entrepreneurial university and entrepreneurial academic. After the systematic elimination based on keywords and titles, 25 articles have been selected from the top 10 Higher Education journals in the SCImago Journal Rankings. Content analysis was performed on these articles to highlight the common operational areas in entrepreneurial universities and activities of entrepreneurial academics. The meta‐synthesis shows that, both for universities and academics, entrepreneurship is overwhelmingly characterised by the commercialisation of scholarly activities that enrich institutional income revenue as well as academics’ personal income. However, such an approach can distance universities from their mission of public good; so Higher Education administrators should create mechanisms that would allow both to take place in a balanced way. 相似文献
43.
44.
Fernandez Frank Baker David P. Fu Yuan-Chih Muñoz Ismael G. Ford Karly Sarita 《Minerva》2021,59(1):79-98
Minerva - Over the course of the 20th century, unprecedented growth in scientific discovery was fueled by broad growth in the number of university-based scientists. During this period the American... 相似文献
45.
Peter Baldwin Melissa J. Margolis Brian E. Clauser Janet Mee Marcia Winward 《Educational Measurement》2020,39(1):37-44
Evidence of the internal consistency of standard-setting judgments is a critical part of the validity argument for tests used to make classification decisions. The bookmark standard-setting procedure is a popular approach to establishing performance standards, but there is relatively little research that reflects on the internal consistency of the resulting judgments. This article presents the results of an experiment in which content experts were randomly assigned to one of two response probability conditions: .67 and .80. If the standard-setting judgments collected with the bookmark procedure are internally consistent, both conditions should produce highly similar cut scores. The results showed substantially different cut scores for the two conditions; this calls into question whether content experts can produce the type of internally consistent judgments that are required using the bookmark procedure. 相似文献
46.
James W. Pellegrino 《Educational Measurement》2020,39(3):81-85
Professor Gordon argues for a significant reorientation in the focus and impact of assessment in education. For the types of assessment activities that he advocates to prosper and positively impact education, serious attention must be paid to two important topics: (1) the conceptual underpinnings of the assessment practices we develop and use to support learning and instruction, and (2) the arguments and evidence we establish for their validity given the intended interpretive use. Such a focus highlights fundamental concepts that have long existed in the broader assessment literature – carefully defining and operationalizing our constructs and then validating the assessments of those constructs. What differs now are the conceptual frameworks, briefly outlined here, that can and must be used to guide both aspects of such work. 相似文献
47.
Historically, disaster response efforts have focused primarily on basic physical survival and safety—addressing medical emergencies and ensuring adequate shelter and supplies of food and water. However, in addition to physical survival, relief efforts must also consider strategies to promote emotional healing and psychological well-being. In particular, those who intervene must consider the acceptability of intervention strategies, taking into account survivors' cultural background, religious customs, and spiritual beliefs. This article offers recommendations to better align school-based therapeutic interventions with children's religious and spiritual beliefs. 相似文献
48.
Harry F. Dorrell Joseph M. Moore Mark F. Smith Thomas I. Gee 《Journal of sports sciences》2019,37(1):67-73
This study investigated the validity and reliability of the GymAware PowerTool (GPT). Thirteen resistance trained participants completed three visits, consisting of three repetitions of free-weight back squat, bench press, deadlift (80% one repetition maximum), and countermovement jump. Bar displacement, peak and mean velocity, peak and mean force, and jump height were calculated using the GPT, a three-dimensional motion capture system (Motion Analysis Corporation; 150 Hz), and a force plate (Kistler; 1500 Hz). Least products regression were used to compare agreeability between devices. A within-trial one-way ANOVA, typical error (TE; %), and smallest worthwhile change (SWC) were used to assess reliability. Regression analysis resulted in R2 values of >0.85 for all variables excluding deadlift mean velocity (R2 = 0.54–0.69). Significant differences were observed between visits 3-2 for bench press bar displacement (0.395 ± 0.055 m; 0.383 ± 0.053 m), and deadlift bar displacement (0.557 ± 0.034 m; 0.568 ± 0.034 m). No other significant differences were found. Low to moderate TE (0.6–8.8%) were found for all variables, with SWC ranging 1.7–7.4%. The data provides evidence that the GPT can be used to measure kinetic and kinematic outputs, however, care should be taken when monitoring deadlift performance. 相似文献
49.
Children are sensitive to a number of considerations influencing distributions of resources, including equality, equity, and reciprocity. We tested whether children use a specific type of reciprocity norm—market norms—in which resources are distributed differentially based strictly on amount offered in return. In two studies, 195 children 5–10 years and 60 adults distributed stickers to friends offering same or different amounts of money. Overall, participants distributed more equally when offers were the same and more unequally when offers were different. Although sensitive to why friends offered different amounts of money, children increasingly incorporated market norms into their distributions with age, as the oldest children and adults distributed more to those offering more, irrespective of the reasons provided. 相似文献
50.