全文获取类型
收费全文 | 10719篇 |
免费 | 104篇 |
国内免费 | 28篇 |
专业分类
教育 | 7127篇 |
科学研究 | 1149篇 |
各国文化 | 96篇 |
体育 | 1340篇 |
综合类 | 7篇 |
文化理论 | 120篇 |
信息传播 | 1012篇 |
出版年
2022年 | 74篇 |
2021年 | 107篇 |
2020年 | 154篇 |
2019年 | 232篇 |
2018年 | 320篇 |
2017年 | 320篇 |
2016年 | 298篇 |
2015年 | 190篇 |
2014年 | 267篇 |
2013年 | 1857篇 |
2012年 | 267篇 |
2011年 | 261篇 |
2010年 | 230篇 |
2009年 | 204篇 |
2008年 | 225篇 |
2007年 | 243篇 |
2006年 | 223篇 |
2005年 | 202篇 |
2004年 | 181篇 |
2003年 | 196篇 |
2002年 | 159篇 |
2001年 | 189篇 |
2000年 | 175篇 |
1999年 | 174篇 |
1998年 | 87篇 |
1997年 | 87篇 |
1996年 | 116篇 |
1995年 | 81篇 |
1994年 | 101篇 |
1993年 | 92篇 |
1992年 | 163篇 |
1991年 | 152篇 |
1990年 | 147篇 |
1989年 | 141篇 |
1988年 | 118篇 |
1987年 | 121篇 |
1986年 | 145篇 |
1985年 | 138篇 |
1984年 | 116篇 |
1983年 | 132篇 |
1982年 | 113篇 |
1981年 | 108篇 |
1980年 | 97篇 |
1979年 | 172篇 |
1978年 | 113篇 |
1977年 | 111篇 |
1976年 | 105篇 |
1975年 | 90篇 |
1974年 | 93篇 |
1971年 | 71篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
101.
The performance of 132 pre- and primary school children on a Bender-Gestalt copying task was compared with that of a multiple choice version that was specially constructed by systematically varying four attributes of the stimulus figures. Significant correlation coefficients were obtained between the copying and recognition scores at all age levels except one. The multiple choice version was also as successful as the copying test in predicting reading achievement scores. 相似文献
102.
Based on many years of training students in both school and clinical psychology, the authors have formulated some impressions of differences and similarities found in these trainees. While generalizations remain tentative and call for research, the students in each of these disciplines seem to present different patterns in cognitive styles, perceptions of clients, conceptions of professional role, and personality characteristics. In personality, the students in these fields often display differences in need for structure, need for external support, social maturity, and desire for autonomous professional functioning. Differences seem to be related to variations in previous work and educational experiences, and to differences in age, sex and marital status. Implications for quality of service offered and training needs are outlined. 相似文献
103.
A discussion of the influences of impulsivity on test performance is presented, along with suggested procedures for ascertaining more accurately the cognitive abilities of impulsive children. 相似文献
104.
105.
V. I. Dorofeeva A. G. Motin D. N. Nikol’skii Yu. S. Fedyaev 《Scientific and Technical Information Processing》2016,43(3):166-173
The main aspects of the creation of a monitoring system for the research activities of the members of a higher-education institution are considered. The scientific activities of the lecturers and members of Turgenev Orel State University is used as the basis. It is expected that this system will be an efficient tool for optimal managerial decisions at all levels. 相似文献
106.
Birgit Angelika Schmidt Martin Andreas Ziemann Simone Pentzien Toralf Gabsch Werner Koch Jörg Krüger 《文物保护研究》2016,61(2):113-122
A great number of Central Asian wall paintings, archeological materials, architectural fragments, and textiles, as well as painting fragments on silk and paper, make up the so called Turfan Collection at the Asian Art Museum in Berlin. The largest part of the collection comes from the Kucha region, a very important cultural center in the third to ninth centuries. Between 1902 and 1914, four German expeditions traveled along the northern Silk Road. During these expeditions, wall paintings were detached from their original settings in Buddhist cave complexes. This paper reports a technical study of a wall painting, existing in eight fragments, from the Buddhist cave no. 40 (Ritterhöhle). Its original painted surface is soot blackened and largely illegible. Grünwedel, leader of the first and third expeditions, described the almost complete destruction of the rediscovered temple complex and evidence of fire damage. The aim of this case study is to identify the materials used for the wall paintings. Furthermore, soot deposits as well as materials from conservation interventions were of interest. Non-invasive analyses were preferred but a limited number of samples were taken to provide more precise information on the painting technique. By employing optical and scanning electron microscopy, energy dispersive X-ray spectroscopy, micro X-ray fluorescence spectroscopy, X-ray diffraction analysis, and Raman spectroscopy, a layer sequence of earthen render, a ground layer made of gypsum, and a paint layer containing a variety of inorganic pigments were identified. 相似文献
107.
There is a crisis of valuation practices in the current academic life sciences, triggered by unsustainable growth and “hyper-competition.” Quantitative metrics in evaluating researchers are seen as replacing deeper considerations of the quality and novelty of work, as well as substantive care for the societal implications of research. Junior researchers are frequently mentioned as those most strongly affected by these dynamics. However, their own perceptions of these issues are much less frequently considered. This paper aims at contributing to a better understanding of the interplay between how research is valued and how young researchers learn to live, work and produce knowledge within academia. We thus analyze how PhD students and postdocs in the Austrian life sciences ascribe worth to people, objects and practices as they talk about their own present and future lives in research. We draw on literature from the field of valuation studies and its interest in how actors refer to different forms of valuation to account for their actions. We explore how young researchers are socialized into different valuation practices in different stages of their growing into science. Introducing the concept of “regimes of valuation” we show that PhD students relate to a wider evaluative repertoire while postdocs base their decisions on one dominant regime of valuing research. In conclusion, we discuss the implications of these findings for the epistemic and social development of the life sciences, and for other scientific fields. 相似文献
108.
Alexandra Avloniti Ioannis G. Fatouros Maria Protopapa Ioannis Athanailidis Christina Avloniti 《European Journal of Sport Science》2016,16(4):402-408
Although static stretching (SS) is utilized during warm-up before training and competition, the results about its effects on performance remain controversial. We examined whether performing a stretch of short-to-moderate duration (<60 sec) in a single repetition produces a similar or different effect on speed and agility performance from the effect which is produced while performing the same stretch in multiple repetitions of the same total duration. According to a repeated measurement design, 40 trained males were randomly assigned to either (1) a single repetition group or (2) a multiple repetition group. The participants in each group performed five trials: a control trial (no stretches were performed) and four experimental trials of SS protocols consisting of five exercises performed at either 20 sec (2 × 10 in the second group), 30 sec (3 × 10 in the second group), 40 sec (4 × 10 in the second group) or 60 sec (6 × 10 in the second group) of total duration. A two-way repeated measures analysis of variance showed that the participants in both group improved their speed performance in response to the 20-sec trial, whereas agility remained unaffected. Data analysis also revealed that the repetition number did not affect speed and agility performance. These data suggest that SS of short duration (<30 sec) may actually improve acute speed performance, whereas SS of moderate duration may not hamper speed and agility performance. Moreover, the effects of SS protocols are related to the total duration of each exercise and not to the number of repetitions in which each exercise is performed. 相似文献
109.
110.
We examined the effectiveness of perceptual training on the performance of handball goalkeepers when anticipating the direction of both direct and deceptive 7-m throws. Skilled goalkeepers were assigned equally to three matched-ability groups based on their pre-test performance: a perceptual training group (n = 14) received video-based perceptual training, a placebo training group (n = 14) received video-based regular training and a control group received no training. Participants in the perceptual training group significantly improved their performance compared to both placebo and control groups; however, anticipation of deceptive throws improved less than for direct throws. The results confirm that although anticipating deception in handball is a challenging task for goalkeepers, task-specific perceptual training can minimise its effect and improve performance. 相似文献