全文获取类型
收费全文 | 21135篇 |
免费 | 39篇 |
国内免费 | 1篇 |
专业分类
21175篇 |
出版年
2023年 | 6篇 |
2022年 | 4篇 |
2021年 | 5篇 |
2020年 | 14篇 |
2019年 | 21篇 |
2018年 | 3500篇 |
2017年 | 2834篇 |
2016年 | 2260篇 |
2015年 | 205篇 |
2014年 | 89篇 |
2013年 | 154篇 |
2012年 | 582篇 |
2011年 | 2405篇 |
2010年 | 2532篇 |
2009年 | 1483篇 |
2008年 | 1720篇 |
2007年 | 2200篇 |
2006年 | 49篇 |
2005年 | 234篇 |
2004年 | 183篇 |
2003年 | 139篇 |
2002年 | 99篇 |
2001年 | 45篇 |
2000年 | 82篇 |
1999年 | 42篇 |
1998年 | 32篇 |
1997年 | 29篇 |
1996年 | 18篇 |
1995年 | 14篇 |
1994年 | 12篇 |
1993年 | 8篇 |
1992年 | 5篇 |
1991年 | 7篇 |
1990年 | 15篇 |
1989年 | 5篇 |
1988年 | 9篇 |
1985年 | 7篇 |
1983年 | 9篇 |
1982年 | 5篇 |
1980年 | 8篇 |
1979年 | 5篇 |
1978年 | 13篇 |
1977年 | 9篇 |
1976年 | 4篇 |
1975年 | 7篇 |
1974年 | 8篇 |
1973年 | 5篇 |
1969年 | 4篇 |
1968年 | 4篇 |
1967年 | 7篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
41.
Leslie J. Francis Paul R. Pearson William K. Kay 《Personality and individual differences》1983,4(2):211-212
The JEPQ and a religious attitude scale, ASC 4B, were completed by 1715 school children aged 11–17 yrs. Attitude to religion was found to decline across the age range, girls were found to be more religious than boys, and introverts more religious than extraverts. The relationship between introversion and religiosity is consistent with previous research and the present study adds substance to this relationship with the use of a more recent E scale on an extended age range. 相似文献
42.
43.
44.
45.
46.
47.
It was hypothesized that both semantic processing and organizational activity are necessary for optimal free recall performance. In a series of three experiments, subjects were presented with a list of randomly selected nouns and were asked to make up a meaningful sentence for each noun. The subjects also rated the difficulty of using each noun. The subjects were instructed to try to remember words that were labeled "remember" words. For words that were labeled "story" words, the subjects were instructed only to make each sentence, using the word, part of an ongoing story which each subject was to make up. A test of retention for all presented words, using retention intervals of both 1 min and 24 h, showed that the story words were always recalled better than were the remember words. However, the amount of sequential organization was the same for both the story and the remember words. Recognition performance was found to be the same for both types of words. In addition, the story words were rated as being more difficult than the remember words. It was concluded that extensive semantic processing without organization is not sufficient for optimal recall. 相似文献
48.
We have established a procedure for behavioral assessment of periodicity pitch perception in the cat. This procedure requires the training of cats to make a differential response to two different pure tones, and then testing for the transfer of learning when complex stimuli known to produce periodicity pitch sensations in humans are substituted for the pure tones. Complex stimuli consisted of three to five harmonically related frequencies of the same amplitude and phase. Eight cats were the subjects of these experiments. Two of them were controls. It is demonstrated here that cats do perceive periodicity pitch. We also used this procedure to measure the upper frequency limit of periodicity pitch perception for two cats. The frequencies tested were 100, 200, 300, 400, 600, 800, 900, and 1,200 Hz. The data indicate that the upper frequency limit of periodicity pitch perception in the cat is on the order of 600 to 800 Hz. There is a trend of decreasing prominence of the perception of periodicity pitch as the component frequencies are increased. These results are parallel to the human psychophysical data. 相似文献
49.
50.