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341.
Virginia C. Mueller Gathercole 《Child development》1997,68(5):832-842
This study examines the acquisition of the linguistic mass/count distinction in English by bilingual (Spanish-English) children. The goal of the study is to explore whether bilingual children, like their monolingual peers, can draw information from the linguistic context in which a new noun id presented to determine whether the new word refers to an object or a substance. Results indicate that at 7 years of age, even bilinguals who are strong in English do not yet draw such inferences. By 9 years of age, however, bilinguals who are strong in English have response patterns similar to those of their monolingual peers but bilinguals who have lower English abilities still lag behind their monolingual peers in drawing such inferences. 相似文献
342.
Carol Byrd-Bredbenner Virginia Wheatley Donald Schaffner Christine Bruhn Lydia Blalock Jaclyn Maurer 《Journal of Food Science Education》2007,6(3):46-55
ABSTRACT: Little is known about the food safety knowledge of young adults. In addition, few knowledge questionnaires and no comprehensive, criterion-referenced measure that assesses the full range of food safety knowledge could be identified. Without appropriate, valid, and reliable measures and baseline data, it is difficult to develop and implement effective education efforts. Thus, the purpose of this study was to develop a comprehensive, valid, reliable food safety knowledge questionnaire. Questionnaire development followed this process: 1) use of published reports and input from experts in food safety and sanitation (n = 7) to identify key food safety concepts; 2) development of a question bank (n = 101) assessing knowledge of key concepts (i.e., cross contamination prevention'disinfection procedures; safe times/temperatures for cooking/storing foods; groups at greatest risk for foodborne disease; foods that increase risk of foodborne disease; and foodborne disease pathogens); 3) refinement of initial questions by experts; 4) questionnaire pretest with young adults (n = 180) and refinement; 5) questionnaire pilot test (n = 126) and refinement; 6) final expert review and refinement; and 7) conversion into an online survey. Young adults (n = 4343, mean age 19.9 ± 1.7SD years) from 21 universities and colleges across the country completed the questionnaire. Item analysis was used to determine the overall quality of the test and identify improvements needed. Livingston's coefficient of reliability for criterion-referenced tests was 0.92. The questionnaire met or exceeded generally recognized standards of reliability and validity. This questionnaire could be useful in baseline assessment of food safety knowledge and measurement of knowledge gained after an educational intervention in adults. 相似文献
343.
The purpose of this study was to investigate whether a general or specific working memory (WM) system is related to writing and whether individual differences in reading and/or processing efficiency underlie the correlations between WM and writing. Two studies correlated WM with writing (Test of Written Language-TOWL) and reading measures. In Study 1, WM was correlated significantly with a number of writing measures, particularly to those measures related to text generation. Working-memory also contributed unique variance to writing, beyond what is predicted by reading comprehension. Study 2 compared the correlations of verbal and visual-spatial WM measures with the TOWL under initial and enhanced memory processing (dynamic assessment) conditions. The coefficients were statistically comparable between initial and enhanced processing conditions, suggesting that individual differences in processing efficiency do not account for the correlations between WM and writing. Overall, the results indicated that (a) WM measures contribute unique variance to writing, especially text generation, and (b) working memory performance improves under gain conditions, but this enhanced processing efficiency did not appear to mediate the links between WM and writing. Taken together, the two studies support a general capacity explanation for the relationship between working memory and text generation. 相似文献
344.
345.
Robert C. Pianta Jessica E. Whittaker Virginia Vitiello Arya Ansari Erik Ruzek 《Early education and development》2018,29(6):797-813
Research Findings: The present study used data from 117 publicly funded preschool classrooms within a large, diverse, suburban county to describe teacher practices and child engagement along with classroom activity settings and children’s exposure to instructional content. Practice or Policy: Results from this investigation revealed that children spent the largest share of the day in teacher-directed whole-group instruction and in free play and very little time was spent in individual and small-group settings. Although a 3rd of the school day was dedicated to academic activities, there were few opportunities for socioemotional learning, and children spent roughly a 3rd of the school day in routines/transitions and meals. Few differences emerged in the classroom observations across school- and community-based programs; however, more educated and experienced teachers spent more time teaching and in teacher-directed instruction. 相似文献
346.
Phonological awareness has been shown to be one of the most reliable predictors and associates of reading ability. In an attempt
to better understand its development, we have examined the interrelations of speech skills and letter knowledge to the phonological
awareness and early reading skills of 99 preschool children. We found that phoneme awareness, but not rhyme awareness, correlated
with early reading measures. We further found that phoneme manipulation was closely associated with letter knowledge and with
letter sound knowledge, in particular, where rhyme awareness was closely linked with speech perception and vocabulary. Phoneme
judgment fell in between. The overall pattern of results is consistent with phonological representation as an important factor
in the complex relationship between preschool children’s phonological awareness, their emerging knowledge of the orthography,
and their developing speech skills. However, where rhyme awareness is a concomitant of speech and vocabulary development,
phoneme awareness more clearly associates with the products of literacy experience. 相似文献
347.
Two groups of pigeons received differential discrimination training on the presence vs absence of a vertical line on a white surround. The line was green for one group and black for a second group. Generalization tests along the angularity dimension showed that both green and black lines produced equally steep gradients. The results suggested that the addition of chroma to the line does not increase attention to the line. 相似文献
348.
John Fantuzzo Stephanie Childs Virginia Hampton Marika Ginsburg-Block Kathleen Coyle Coolahan Darlena Debnam 《Early childhood research quarterly》1997,12(4):425-437
The study is a follow-up evaluation of a Collaborative Training curriculum for Head Start. The previous curriculum was enhanced by adding parent exemplars and demonstrations in trainees' classrooms. Two Head Start teachers and two parent volunteers from each of 70 classrooms were randomly assigned to either the enhanced Collaborative Training (CT) or Workshop Training (WT) approach. CT teachers and parents were involved conjointly in experiential training that included receiving guided practice and feedback from exemplary peers. WT consisted of a series of workshops conducted by outside trainers for separate groups of parents and teachers. Training methods were compared with respect to (a) trainees' reports of satisfaction with training and collaboration, and (b) observed levels of adult-adult and adult-child classroom interactions. CT teachers and parents reported significantly greater levels of satisfaction with the training, as well as significantly greater levels of collaboration than WT participants. Teacher-teacher and parent-teacher observations indicate that CT trainees showed higher levels of positive classroom interactions than WT trainees. With respect to adultchild classroom interactions, CT teachers demonstrated significantly more praise, supportive physical contact, and positive interactions in instruction than WT teachers. CT parents showed higher levels of adult-child classroom interactions across all observed categories compared to their WT counterparts. Implications of these findings for further research were discussed. 相似文献
349.
Claims have been made that computer mediated communication (CMC) is a potentially highly participatory and democratic medium because it reduces the requirement to interrupt or wait your turn to speak. Such aspects of discussion have been shown to be relevant to differences in male and female participation in group discussions. In general, men have been found to take more turns and to speak longer than women in mixed sex groups. Men are also said to characteristically speak about things, take centre stage and give opinions. Women on the other hand are more likely to emphasis people rather than things, and to build and maintain relations in the way they talk. These two styles have been described as report talk of men and rapport talk of women.In this paper we describe some preliminary findings on the impact of using CMC and its effect on traditional gender participation differences. We look first at turn taking by men and women in computer conferences, and then how women in particular experience differences in the kind of contributions made to the conferences by men and women. Finally, we look at the actual contributions made by men and women and the extent they differ from each other. 相似文献
350.
Recent accounts of language acquisition propose that the knowledge structures that comprise language develop within a single, unified system that shares computational resources and representations. One implication of this approach is that developmental relations within the system become central to theorizing about language acquisition. Previous work suggested that lexical development preceded grammatical development, a developmental ordering with strong theoretical implications. One purpose of the current article is to test this developmental ordering hypothesis. Results showed that children (aged 16-30 months) developed lexicon and grammar synchronously. The second purpose is to demonstrate a recently developed method for testing developmental ordering, the nonlinear-mapping approach, and show how the method can be extended to capitalize on multiply determined developmental systems, such as language. 相似文献