全文获取类型
收费全文 | 454篇 |
免费 | 7篇 |
专业分类
461篇 |
出版年
2022年 | 2篇 |
2021年 | 5篇 |
2020年 | 5篇 |
2019年 | 2篇 |
2018年 | 10篇 |
2017年 | 7篇 |
2016年 | 5篇 |
2015年 | 8篇 |
2014年 | 16篇 |
2013年 | 60篇 |
2012年 | 19篇 |
2011年 | 21篇 |
2010年 | 12篇 |
2009年 | 5篇 |
2008年 | 19篇 |
2007年 | 18篇 |
2006年 | 10篇 |
2005年 | 11篇 |
2004年 | 15篇 |
2003年 | 16篇 |
2002年 | 18篇 |
2001年 | 14篇 |
2000年 | 4篇 |
1999年 | 7篇 |
1998年 | 13篇 |
1997年 | 9篇 |
1996年 | 8篇 |
1995年 | 9篇 |
1994年 | 7篇 |
1993年 | 7篇 |
1992年 | 10篇 |
1991年 | 10篇 |
1990年 | 8篇 |
1989年 | 6篇 |
1988年 | 4篇 |
1987年 | 5篇 |
1986年 | 4篇 |
1985年 | 6篇 |
1984年 | 3篇 |
1983年 | 7篇 |
1982年 | 6篇 |
1981年 | 5篇 |
1980年 | 9篇 |
1979年 | 2篇 |
1978年 | 3篇 |
1977年 | 2篇 |
1975年 | 2篇 |
1974年 | 3篇 |
1973年 | 1篇 |
1968年 | 1篇 |
排序方式: 共有461条查询结果,搜索用时 0 毫秒
161.
We prove that all semisimple varieties of FL
ew-algebras are discriminator varieties. A characterisation of discriminator and EDPC varieties of FL
ew-algebras follows. It matches exactly a natural classification of logics over FL
ew proposed by H. Ono. 相似文献
162.
Paul E. Priester Josh Scherer Jesse A. Steinfeldt Asma Jana-Masri Terri Jashinsky Janice E. Jones Cher Vang 《Pastoral Psychology》2009,58(3):315-322
This study examines the prevalence of endorsing the twelve step approach and the use of prayer, meditation, and holistic techniques
in a national sample of 139 substance abuse treatment centers. Ninety one percent of the programs endorsed a twelve step orientation.
Twenty six percent of the programs actively used prayer and 58% used meditation as a component of treatment. Thirty three
percent of the programs used some form of a self-designated holistic technique. There was a divergent range of techniques
that were used by programs, falling into four broad categories: (1) nutrition, exercise, relaxation and physical health; (2)
recreation and adventure-based activities; (3) religious and spiritual practices; and (4) the use of specific therapy modalities. 相似文献
163.
Steven Roodenrys Charles Hulme Janice Alban Andrew W. Ellis Gordon D. A. Brown 《Memory & cognition》1994,22(6):695-701
The experiments reported examine the effects of two highly related variables, word frequency and age of acquisition, on short-term memory span. Short-term memory span and speech rate were measured for sets of words which independently manipulated frequency and age of acquisition. It was found that frequency had a considerable effect on short-term memory span, which was not mediated by speech rate differences—although frequency did affect speech rate in one experiment. For age of acquisition, this situation was reversed; there was a small but significant effect of age of acquisition on speech rate, but no effect on memory span. This occurred despite results confirming that the stimuli used in the experiments produce an effect of age of acquisition on word naming. The results are discussed in terms of a two-component view of performance on short-term memory tasks. 相似文献
164.
The incidence of cervical cancer has decreased over 70% in the last several decades due in large part to the Papanicolaou (Pap) test. Despite the acknowledged efficacy of this test, however, many women do not receive cervical screening. The present study investigated the contributions of individual differences in concerns with self-presentation and social evaluation to the prediction of intentions and behavior involving cervical screening. Eighty-two Caucasian women completed measures of social anxiety, physique anxiety, public and private self-consciousness, fear of negative evaluation, and self-esteem, in addition to questions assessing their knowledge and behavior regarding cervical screening. Social anxiety significantly predicted intention to receive cervical screening for a medical reason, as well as the frequency with which the women actually received gynecological examinations. Physique anxiety accounted for a significant percentage of the variance in women's likelihood of receiving cervical screening within the next year. Interpersonal aspects of the gynecological exam, as well as implications of the findings for gynecological practice are discussed. 相似文献
165.
Francis X. Clooney S.J. Gail Hinich Sutherland Lou Ratté Francis X. Clooney S.J. Carl Olson Constantina Rhodes Bailly Alex Wayman Herman Tull Sheila McDonough Robert Zydenbos Cynthia Ann Humes Sarah Caldwell Deepak Sharma Robin Rinehart Robert N. Minor Frank J. Korom Janice D. Willis Peter Flügel Vijay Prashad Muhammad Usman Erdosy Muhammad Usman Erdosy Antony Copley Steve Derné Swarna Rajagopalan Gavin Flood Rebecca J. Manring Michael York David Gordon White John Grimes Melissa Kerin Steven J. Rosen Anna B. Bigelow Carl Olson Will Sweetman 《International Journal of Hindu Studies》1997,1(3):596-643
166.
Andrès U. Vargas Janice A. Grskovic Phillip J. Belfiore Janet Halbert-Ayala 《Journal of Behavioral Education》1997,7(1):13-23
We examined the effects of error correction on spelling accuracy of culturally and linguistically diverse students enrolled in summer Migrant Education. In an error correction strategy, students spelled a word, viewed a correct model, and corrected specific errors. In a traditional strategy, students wrote words three times each while viewing a correct model. Words were presented in Spanish or English. Results showed that students with and without learning disabilities, whose primary language was English, correctly spelled more English words in the error correction condition than the traditional. Students whose primary language was Spanish correctly spelled Spanish words equally well in both conditions, possibly because of the phonetic nature of the Spanish language. 相似文献
167.
Janice E. Weaver Janice N. Steirn Thomas R. Zentall 《Psychonomic bulletin & review》1997,4(1):113-117
Transitive inference (TI) effects have been demonstrated in several nonhuman species using a nonverbal version of the task in which A is better than B is represented in a simple simultaneous discrimination, A+B?. Following five-term training (e.g., A+B?, B+C?, C+D?, D+E?), the choice of B over D on test trials is taken as evidence of TI. Recently, differential value transfer from the S+ to the S? in a simultaneous discrimination has been proposed as a noncognitive basis for these effects. Two experiments were conducted to control for differential value transfer. The results suggest that differential value transfer is not the only basis for nonhuman TI performance. An alternative account based on spatial mapping is discussed. 相似文献
168.
Young and old adults were compared in their efficiency of remembering concurrently presented series of letters and digits in three separate experiments. Instructions and payoffs to vary attentional emphasis across the two types of material in different conditions allowed the examination of attention-operating characteristics in the two age groups. Strategy-independent measures derived from these attention-operating characteristics revealed that older adults exhibited greater performance deficits than young adults when dividing their attention between the two tasks, even though dual-task difficulty was individually adjusted for each subject. It was concluded that either the total amount of attention available for distribution or the efficiency of its allocation decreased with age even though the ability to vary one’s attention between concurrent tasks in response to instructions and payoffs remained intact. 相似文献
169.
Marjorie H. Charlop Patricia F. Kurtz Janice P. Milstein 《Journal of applied behavior analysis》1992,25(4):795-808
Task interspersal procedures have been quite effective in increasing autistic children's motivation to learn. These procedures have typically demonstrated that the inclusion of reinforced maintenance tasks (previously learned tasks) increases responding to new acquisition tasks because more reinforcers, in general, are available. However, studies have not specifically addressed the effects of various schedules of reinforcement, used in conjunction with task interspersal procedures, upon response acquisition. In the present study, a multiple baseline design across subjects was used to assess different reinforcement schedules. Five autistic children participated in learning sessions, during which trials of an acquisition task were interspersed with trials of three maintenance tasks. Correct responses to acquisition tasks were continuously reinforced throughout all conditions, while the reinforcement schedule for competent performance of maintenance tasks differed systematically. Results indicated that all children learned the new tasks when food reinforcers were presented only for acquisition tasks. Results are discussed in terms of behavioral contrast and improving the effectiveness of motivation-enhancing procedures for autistic children. 相似文献
170.