全文获取类型
收费全文 | 15461篇 |
免费 | 719篇 |
国内免费 | 16篇 |
出版年
2023年 | 110篇 |
2022年 | 97篇 |
2021年 | 166篇 |
2020年 | 304篇 |
2019年 | 354篇 |
2018年 | 460篇 |
2017年 | 431篇 |
2016年 | 524篇 |
2015年 | 325篇 |
2014年 | 435篇 |
2013年 | 1702篇 |
2012年 | 721篇 |
2011年 | 759篇 |
2010年 | 517篇 |
2009年 | 527篇 |
2008年 | 707篇 |
2007年 | 721篇 |
2006年 | 622篇 |
2005年 | 538篇 |
2004年 | 564篇 |
2003年 | 523篇 |
2002年 | 516篇 |
2001年 | 260篇 |
2000年 | 245篇 |
1999年 | 227篇 |
1998年 | 218篇 |
1997年 | 184篇 |
1996年 | 138篇 |
1995年 | 183篇 |
1994年 | 190篇 |
1993年 | 158篇 |
1992年 | 167篇 |
1991年 | 139篇 |
1990年 | 140篇 |
1989年 | 134篇 |
1988年 | 143篇 |
1987年 | 130篇 |
1986年 | 113篇 |
1985年 | 134篇 |
1984年 | 137篇 |
1983年 | 121篇 |
1982年 | 136篇 |
1981年 | 130篇 |
1980年 | 127篇 |
1979年 | 127篇 |
1978年 | 143篇 |
1977年 | 109篇 |
1976年 | 109篇 |
1975年 | 82篇 |
1974年 | 97篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
961.
Tamsen Caruso Brown Judy Garber Michael Muto Katherine A. Schneider 《Journal of genetic counseling》1999,8(6):359-372
A client's emotional experiences and reactions to those experiences are influenced by his/her family of origin and direct or indirect interactions with various family members. Contextual therapists propose that a client's satisfaction with a relationship depends on the equity of his/her emotional interactions with family members. When relationships are inequitable, trust between individuals disintegrates. In order to reestablish trust in a relationship, a balance of interests must be restored. If not, imbalances may be passed down to future generations. A case of a woman with a family history of ovarian cancer is reviewed with the principles of contextual therapy in mind. In her family, several legacies have resulted in unbalanced relationships between family members that lead to difficulty in establishing trust within the genetic counseling session. 相似文献
962.
963.
Aimée M. Surprenant Susan L. Hura Mary P. Harper Leah H. Jamieson Glenis Long Scott M. Thede Ayasakanta Rout Tsung-Hsiang Hsueh Stephen A. Hockema Michael T. Johnson Pramila N. Srinivasan Christopher M. White J. Brandon Laflen 《Behavior research methods》1999,31(4):638-649
Ratings of familiarity and pronounceability were obtained from a random sample of 199 surnames (selected from over 80,000 entries in the Purdue University phone book) and 199 nouns (from the Ku?era-Francis, 1967, word database). The distributions of ratings for nouns versus names are substantially different: Nouns were rated as more familiar and easier to pronounce than surnames. Frequency and familiarity were more closely related in the proper name pool than the word pool, although both correlations were modest. Ratings of familiarity and pronounceability were highly related for both groups. A production experiment showed that rated pronounceability was highly related to the time taken to produce a name. These data confirm the common belief that there are differences in the statistical and distributional properties of words as compared to proper names. The value of using frequency and the ratings of familiarity and pronounceability for predicting variations in actual pronunciations of words and names are discussed. 相似文献
964.
Timothy M. Harte David L. Black Michael T. Hollinshead 《Behavior research methods》1999,31(4):680-683
This paper describes how the multi-energy sensor array has been refitted to meet the needs of measuring geomagnetic and other types of electromagnetic phenomena in an environment. This portable laptop computer system was designed to measure the interaction of multiple frequencies with the psychological and physiological processes that underlie human exposure to electromagnetic fields across the spectra. New sensors and analytical software have been implemented in the new configuration. 相似文献
965.
Numerically small disciplines can be jeopardized by geographic difficulties, if student populations at universities are small and distances between them large. This problem could be addressed, if teaching resources could be shared among several universities and students in several locations could be taught simultaneously. We present the results of a trial in simultaneous Internet and videoconferencing delivery of an introductory cognitive science laboratory. The trial relied on off-the-shelf software and hardware. Students found the delivery nearly as effective as a locally run laboratory, despite a noticeable difference in the level of interactivity between the remote and other, local laboratory classes. We discuss possible further improvements in teaching efficiency and efficacy. 相似文献
966.
967.
Elaina M. Frieda Amanda C. Walley James E. Flege Michael E. Sloane 《Attention, perception & psychophysics》1999,61(3):561-577
Two experiments were conducted to evaluate the perceptual magnet effect. In Experiment 1, Amer-ican English speakers representing diverse dialects were presented with a fine-grained set of stimuli (varying in just noticeable differences forF1 andF2) and indicated whether they heard “/i/” or “not /i/,” thus delimiting the /i/ portion of the vowel space for individual subjects. Then these same subjects selected their own /i/ prototype with a method-of-adjustment procedure. The data from this experiment were used to synthesize customized prototype and nonprototype stimulus sets for Experiment 2. In Experiment 2,24 of our original 37 subjects completed a discrimination task for each of three conditions, in which vector stimuli varied from the subject’s prototype, the nonprototype, or a foreign vowel (/y/) in 15-mel steps. Subjects displayed higher discrimination, as indexed byd′, for the nonprototype condition than they did for both the prototype and the foreign conditions. In addition, discrimination was better for variants further away from the referent in each condition. However, discrimination was not especially poor for stimuli close to subjects’ individual prototypes—a result that would have yielded the strongest support for the operation of a magnet effect. This negative finding, together with other aspects of our results, raises problems for any theory of vowel perception that relies solely on “one-size-fits-all” prototype representations. 相似文献
968.
Viewed from the center of projection, a perspective picture presents the pictorial depth information of a scene. Knowing the center of projection, one can reconstruct the depicted scene. Assuming another viewpoint is the center of projection will cause one to reconstruct a transformed scene. Despite these transformations, we appreciate pictures from other viewpoints. The compensation hypothesis states that the visible picture surface allows observers to compensate for transformations by locating the center of projection and experiencing pictorial space from there. We show that observers neither completely compensate for nor experience transformations of space as geometry would predict. We propose a modified compensation hypothesis according to which different degrees of visibility of the picture surface invoke different degrees of compensation. 相似文献
969.
970.
Memory for previously learned figural sequences and item-to-item covariations within figural sequences was examined under explicit and implicit instructional conditions in three age groups: young adults (17-23 years); middle-aged adults (35-45 years); and older adults (55-65 years). In Phase 1 of the experiment, the acquisition phase, half the subjects in each age group learned sequences of three to eight items in which the item-to-item changes conformed to an artificial grammar, and the other half of the subjects in each age group learned strings in which the item-to-item changes were nongrammatical. In Phase 2, the implicit/explicit test phase, subjects made forced-choice judgments about parts of the strings that they learned in Phase 1, under either explicit or implicit instructions. Analyses of Phase 2 data revealed that subjects in both instructional conditions used item-to-item covariations in making decisions about grammatical strings. However, use of previously learned covariations as well as the number of correct judgments about previously learned strings was greater in the explicit condition than in the implicit condition. An age-related deficit was found for explicit recognition of grammar-following sequences. 相似文献