全文获取类型
收费全文 | 22830篇 |
免费 | 235篇 |
国内免费 | 14篇 |
专业分类
教育 | 16726篇 |
科学研究 | 1949篇 |
各国文化 | 234篇 |
体育 | 1623篇 |
综合类 | 12篇 |
文化理论 | 194篇 |
信息传播 | 2341篇 |
出版年
2021年 | 162篇 |
2020年 | 248篇 |
2019年 | 418篇 |
2018年 | 568篇 |
2017年 | 612篇 |
2016年 | 558篇 |
2015年 | 376篇 |
2014年 | 487篇 |
2013年 | 4655篇 |
2012年 | 476篇 |
2011年 | 552篇 |
2010年 | 410篇 |
2009年 | 373篇 |
2008年 | 520篇 |
2007年 | 435篇 |
2006年 | 482篇 |
2005年 | 384篇 |
2004年 | 363篇 |
2003年 | 329篇 |
2002年 | 356篇 |
2001年 | 447篇 |
2000年 | 420篇 |
1999年 | 390篇 |
1998年 | 242篇 |
1997年 | 273篇 |
1996年 | 290篇 |
1995年 | 320篇 |
1994年 | 261篇 |
1993年 | 262篇 |
1992年 | 351篇 |
1991年 | 310篇 |
1990年 | 301篇 |
1989年 | 351篇 |
1988年 | 344篇 |
1987年 | 295篇 |
1986年 | 297篇 |
1985年 | 319篇 |
1984年 | 297篇 |
1983年 | 321篇 |
1982年 | 274篇 |
1981年 | 237篇 |
1980年 | 214篇 |
1979年 | 306篇 |
1978年 | 261篇 |
1977年 | 246篇 |
1976年 | 214篇 |
1975年 | 185篇 |
1974年 | 177篇 |
1973年 | 187篇 |
1971年 | 148篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
81.
82.
83.
84.
EUROPEAN PUBLIC PERCEPTIONS OF SCIENCE 总被引:2,自引:0,他引:2
Bauer Martin; Durant John; Evans Geoffrey 《Int. Journal of Public Opinion Research》1994,6(2):163-186
In this paper we explore the relationships between public interestin, knowledge of, and attitudes towards science and technologyand the level of industrialization in 12 countries of the EuropeanCommunity. Using the 1989 Eurobarometer survey no 31 (N=11,678),we constructed four scales measuring interest, knowledge, generalattitudes to science, and support for EC funded science foreach of the 12 EC countries. We found that overall factual scientificknowledge correlates moderately positively with interest andattitudes to science. For example the Netherlands and GreatBritain have relatively high levels of knowledge, interest,and support for science in general. Spain and Greece have relativelylow levels of knowledge, interest, and support for science ingeneral. However, the simple correlation hides more complexrelationships. First, the variance within and across countriesof knowledge, attitudes and interest increases with nationallevels of knowledge. This indicates greater degrees of polarizationof both support and interest. Second, the data indicates a post-industrialismeffect: knowledge, interest in, and attitudes to science showa curvilinear relationship with levels of industrialization.The decline of interest in science and the less positive attitudesin highly developed countries requires further exploration.Third, we found, that the consistency of the knowledge and theattitude measures declines as the national level of knowledgeincreases. We suggest that this reflects a knowledge-ignoranceparadox and knowledge specialization among informed populations.Support for EC level science follows a different pattern. Wefound that France, Italy, and Spain show high levels of supportfor EC level science. This is not the case in Great Britainand Germany. The pattern suggests that attitudes towards ECscience are formed on the basis of national level scientificstrength: if the national science base is strong, EC scienceinitiatives find less support and vice versa. These findingsrepresent a first step towards a comparative assessment of publicunderstanding of science in EC countries. 相似文献
85.
Employee book clubs are simple, inexpensive tools for professional development that may be more effective than traditional training methods. Library staff at Brigham Young University participated in professional development book clubs, and they reported that they found these trainings to be more enjoyable than classroom-style trainings and more effective in helping them understand, retain, and apply the principles learned. This article will discuss the success of these book clubs and suggest ways that other libraries can implement cost-effective book clubs to develop professional and leadership skills. 相似文献
86.
Myers ND Wolfe EW Maier KS Feltz DL Reckase MD 《Research quarterly for exercise and sport》2006,77(4):451-463
This study extended validity evidence for multidimensional measures of coaching competency derived from the Coaching Competency Scale (CCS; Myers, Feltz, Maier, Wolfe, & Reckase, 2006) by examining use of the original rating scale structure and testing how measures related to satisfaction with the head coach within teams and between teams. Motivation, game strategy, technique, and character building comprised the dimensions of coaching competency. Data were collected from athletes (N = 585) nested within intercollegiate men's (g = 8) and women's (g = 13) soccer and women's ice hockey (g = 11) teams (G = 32). Validity concerns were observed for the original rating scale structure and the predicted positive relationship between motivation competency and satisfaction with the coach between teams. Validity evidence was offered for a condensed post hoc rating scale and the predicted relationship between motivation competency and satisfaction with the coach within teams. 相似文献
87.
88.
89.
John G Landels 《Endeavour》1979,3(1):32-37
The water-clock was the first mechanical device for time measurement to be used by the Greeks. Previously they had relied on sundials, or observation of the phases of the moon or the position of the sun in the zodiac to locate points of time within the day, month or year; and by the mid-fifth century BC they had made some progress with the difficult calendar problems due to the fact that the solar day, the lunar month, and the solar year are not commensurable with each other in whole numbers. 相似文献
90.
John OReilly 《Journal of The Franklin Institute》1979,307(3):193-202
The problem of least-squares state estimation of stochastic continuous-time linear systems is reconsidered. A concise derivation of the least-squares minimal-order estimator is presented using an innovations approach. An important result is the reinstatement of the problem in a least-squares estimation framework independent of deterministic observer theory. A second result is thus the clarification of previous approaches to the problem, particularly in relation to observer theory. 相似文献