全文获取类型
收费全文 | 499篇 |
免费 | 16篇 |
专业分类
教育 | 354篇 |
科学研究 | 22篇 |
各国文化 | 8篇 |
体育 | 50篇 |
信息传播 | 81篇 |
出版年
2022年 | 3篇 |
2021年 | 3篇 |
2020年 | 12篇 |
2019年 | 18篇 |
2018年 | 30篇 |
2017年 | 27篇 |
2016年 | 22篇 |
2015年 | 9篇 |
2014年 | 15篇 |
2013年 | 106篇 |
2012年 | 13篇 |
2011年 | 15篇 |
2010年 | 14篇 |
2009年 | 6篇 |
2008年 | 7篇 |
2007年 | 12篇 |
2006年 | 4篇 |
2005年 | 7篇 |
2004年 | 10篇 |
2003年 | 8篇 |
2002年 | 7篇 |
2001年 | 3篇 |
2000年 | 7篇 |
1999年 | 7篇 |
1998年 | 5篇 |
1997年 | 9篇 |
1996年 | 6篇 |
1995年 | 4篇 |
1994年 | 6篇 |
1993年 | 5篇 |
1992年 | 12篇 |
1991年 | 4篇 |
1990年 | 11篇 |
1989年 | 7篇 |
1988年 | 3篇 |
1987年 | 5篇 |
1986年 | 4篇 |
1984年 | 7篇 |
1983年 | 5篇 |
1982年 | 6篇 |
1981年 | 4篇 |
1980年 | 4篇 |
1979年 | 4篇 |
1978年 | 4篇 |
1977年 | 4篇 |
1976年 | 6篇 |
1973年 | 3篇 |
1971年 | 3篇 |
1968年 | 2篇 |
1927年 | 2篇 |
排序方式: 共有515条查询结果,搜索用时 15 毫秒
21.
Barbara Stewart Peter Speldewinde Benjamin Ford 《Assessment & Evaluation in Higher Education》2018,43(4):598-611
To track the quality of instruction delivered at the University of Western Australia, the university surveys all units using its Students’ Unit Reflective Feedback (SURF) metrics, and faculties use these metrics to benchmark student satisfaction. Consequently, teaching staff are actively encouraged to adopt teaching practices that will increase the average levels of these metrics. Using a ‘before-after’ approach, we compared these metrics before and after the implementation of improved teaching practices that addressed specific weaknesses identified through student responses for two undergraduate units. Despite the implementation of improved teaching practices, SURF scores did not increase significantly for the two units assessed, due possibly to the components of the academic programme covered by the SURF questions, the field-based nature of the units, and the difficulty in measuring an increase in the SURF scores of units which already score highly. This poor sensitivity of the SURF metrics to the implementation of improved teaching practices could have implications for their use for performance assessment by the university. 相似文献
22.
A consumer advocate, two childbirth educators, and a certified nurse-midwife each provide commentary on the effectiveness of and potential uses for the Evidence Basis for the Ten Steps of Mother-Friendly Care. 相似文献
23.
Crowdsourcing interactions: using crowdsourcing for evaluating interactive information retrieval systems 总被引:1,自引:0,他引:1
Guido Zuccon Teerapong Leelanupab Stewart Whiting Emine Yilmaz Joemon M. Jose Leif Azzopardi 《Information Retrieval》2013,16(2):267-305
In the field of information retrieval (IR), researchers and practitioners are often faced with a demand for valid approaches to evaluate the performance of retrieval systems. The Cranfield experiment paradigm has been dominant for the in-vitro evaluation of IR systems. Alternative to this paradigm, laboratory-based user studies have been widely used to evaluate interactive information retrieval (IIR) systems, and at the same time investigate users’ information searching behaviours. Major drawbacks of laboratory-based user studies for evaluating IIR systems include the high monetary and temporal costs involved in setting up and running those experiments, the lack of heterogeneity amongst the user population and the limited scale of the experiments, which usually involve a relatively restricted set of users. In this paper, we propose an alternative experimental methodology to laboratory-based user studies. Our novel experimental methodology uses a crowdsourcing platform as a means of engaging study participants. Through crowdsourcing, our experimental methodology can capture user interactions and searching behaviours at a lower cost, with more data, and within a shorter period than traditional laboratory-based user studies, and therefore can be used to assess the performances of IIR systems. In this article, we show the characteristic differences of our approach with respect to traditional IIR experimental and evaluation procedures. We also perform a use case study comparing crowdsourcing-based evaluation with laboratory-based evaluation of IIR systems, which can serve as a tutorial for setting up crowdsourcing-based IIR evaluations. 相似文献
24.
Gay B. Stewart 《Journal of Science Education and Technology》1997,6(3):173-191
In this paper, we present a system for formally characterizing elements of an introductory science class, measuring the performance of a class based on this characterization, and modeling the value of the class based on the measurements. This system allows the iterative improvement of any educational presentation through a model, test, iterate cycle. We propose formal practices involved in iteratively improving an educational experience be called educational engineering. 相似文献
25.
This article explores Robert Kegan's adult constructive‐developmental (ACD) theory. We compare these ideas to the way educators at each of Kegan's meaning‐making levels might plan, implement, and assess digitally enhanced teaching activities. Using Drago‐Severson's interpretation of Kegan's concepts, the authors propose that behaviors of university teaching practitioners indicate mindsets evident at four ACD levels—instrumental, socialized, self‐authoring, and self‐transforming. Higher education professional development literature has identified a significant gap in practitioner implementation of interactive strategies using digital tools. If university practitioners increase their mental complexity they may become more adaptive in the application of interactive pedagogies and digital technologies. Adaptive approaches might cultivate new pedagogies supporting and challenging students toward more complex and flexible qualities of mind. 相似文献
26.
27.
28.
I Stewart L McNaughton P Davies S Tristram 《Research quarterly for exercise and sport》1990,61(1):80-84
It is known that an increased level of red blood cell 2,3-diphosphoglycerate (DPG) shifts the oxyhemoglobin dissociation curve to the right, thus allowing a greater unloading of oxygen at the tissue level. It has been hypothesized that phosphate might help increase VO2max by increasing 2,3-DPG level. Eight trained cyclists underwent three cycle ergometer tests (control, placebo, and experimental) to determine whether phosphate ingestion had any positive effect on VO2max, time to exhaustion, serum 2,3-DPG, and serum phosphate levels. We found no change between the control, placebo, or experimental conditions in pretest serum phosphate levels, but we did find increases in 2,3-DPG levels in the phosphate condition (p less than .05), which suggests that even a small amount of phosphate could increase levels of 2,3-DPG. We also found significant differences in VO2max between the control (p less than .05) and placebo (p less than .02) conditions and also in time to exhaustion between the three conditions (p less than .05). We suggest that phosphate may have an ergogenic effect, but clearly more work needs to be undertaken to ascertain the amount of phosphate required and the magnitude of the effect. 相似文献
29.
30.