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551.
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   
552.
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   
553.
During the 1950s and 1960s, most colleges and universities enjoyed rapid student enrollment increases and liberally expanded their programs and physical facilities accordingly. But the economic, fiscal, and social developments of the 1970s have reduced income sources, increased costs, and diminished traditional student populations. Richard Freeman's work on the demand for higher education and the future worth of a college degree has become a major source of controversy among academicians. To establish a relationship between college attendance and the college job market, Freeman employed a three-equation model to analyze the causative supply and demand determinants. In this paper, we examine the viability of Freeman's Recursive Adjustment Model as a management tool for explaining and predicting enrollments and the job market using macro and micro cases.Presented at the Nineteenth Annual Forum of the Association for Institutional Research, San Diego, California, May 1979.  相似文献   
554.
Previously it has been reported that female performance on the recall of objects and their locations in a spatial array is superior to that of males. This may reflect underlying information-processing biases whereby males organize information in a self-referential manner while females adopt a more comprehensive approach. The known female advantage in verbal memory may, however, account for this sex difference. In an initial experiment we found no overall sex differences in object or object-location memory. The inclusion of a verbal distracter task revealed gender-congruent biases in performance. A final study examined some methodological issues associated with the design of item arrays. After controlling for differences in item distinctiveness, performance on object-location was found to be substantially influenced by the distance that items were displaced in the array. These findings demonstrate that certain methodological factors can significantly affect the attentional and mnemonic processes that operate when performing tasks of this nature and can negate underlying sex differences in performance.  相似文献   
555.
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   
556.
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   
557.
Gendered expectations are deeply embedded within the fabric of a society and the classroom is no exception; binaries habitually pervade attitudes, practices and pedagogies. This small-scale qualitative-interpretive study, undertaken in one rural primary school in North Wales, explores how the learning of gender is constructed, enacted and challenged by participants functioning within Key Stage 2 (children aged 8–11 years), issues experienced by, both girls and boys, to cogitate implications for gender equity and for teachers' work. The fieldwork revealed that many school participants continue to draw upon essentialist binary discourse, predominantly based on biological theories, to explain differences between boys and girls relating to classroom behaviour, subject attainment, curricular preferences and career pathways. Constant reference was made to acceptable ways of ‘doing masculinity’ and the ‘high-achieving, conforming school girl culture’. Children recognised gender binaries used by teachers and were aware of societal advances in gender equity. Despite decades of research and policies, we are still some way to ameliorating gender binaries and stereotypes in this phase of schooling. Therefore, there is an urgent need for practitioners to become more reflexively aware about the complex ways in which gendered dualisms and hierarchies perpetuate and dictate relations and pedagogical practices, which constrain experiences and opportunities for girls and boys and, to incorporate multiple ways of thinking and doing gender in classrooms.  相似文献   
558.
559.
Abstract

Teachers used a nonexclusionary time‐out package to treat inappropriate social behaviors that interfered with instructional tasks in four classrooms of preschool children, each containing an average of 16 students. We yoked classrooms on pretreatment scores of target behaviors and randomly assigned them to a time‐out ribbon plus praise or control condition. Students in the treatment condition wore wristbands with attached smiling face stickers and received praise from teachers for taking turns talking and remaining seated during group activities. Contingent on disruptive behavior, teachers removed the wristbands signaling a three‐minute time‐out period in which teachers restricted praise and attention but ongoing participation in activities continued. Multiple measures of treatment outcome were analyzed via MANCOVA and ANCOVAs. Behavior improved on direct observations of target behavior, the Preschool Behavior Questionnaire (PBQ) and items on a semantic differential, but not the Matson Evaluation of Social Skills with Youngsters. Treatment acceptability also supported treatment effects. We discuss implications of these results.  相似文献   
560.
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