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61.
Three studies assessed the ability of 2-year-olds to use semantic context to infer the meanings of novel nouns and to retain those meanings a day later. In the first experiment, 24 2-year-olds heard novel nouns in sentences that contained semantically constraining verbs (e.g., "Mommy feeds the ferret"). They chose from a set of four novel object pictures to indicate the referent. Children learned a majority of the novel words. However, they occasionally failed to choose the correct object even when they understood the verb. Experiment 2 examined whether this was due to an inability to identify some of the pictures of novel objects. Experiment 3 tested 24 2-year-olds' memory for the newly learned nouns following a 24 hr delay and found significant retention. Results are discussed in terms of learning mechanisms that facilitate vocabulary acquisition in young children. 相似文献
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本阐述了《机械设计基础》的教学对高职学生学习的重要性,总结该课程新的教学特点和过程,为后续课程打下好的基础。 相似文献
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2 studies examined 5–12-year-olds' judgments regarding the behavior of balance scales and other levers whose arms varied in a causal (the number of equally weighted objects or their distances from the fulcrum) or a noncausal (the color, position, or orientation of objects) variable. There were age-related increases in correct judgments for each causal and noncausal variable, with children tending to make correct judgments about the influence of physical features of objects (their number and color) at an earlier age than they did about spatial relations between objects (their distance, orientation, and position). Children's patterns of errors judging the influence of causal (particularly distance) and noncausal (particularly position and orientation) variables were different, and there was no relation between children's correct judgments regarding causal and noncausal variables The results suggest that there are separate processes underlying children's ability to identify causal and dismiss noncausal influences on levers which are dependent on the kinds of features (physical or both physical and spatial) which children conceive of as potentially influencing the behavior of levers. 相似文献
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Joan F. Goodman Margaret Inman Linn 《International Journal of Disability, Development & Education》2003,50(2):137-148
In recent years, we have come to appreciate the close parallels in the development of children with and without intellectual disabilities. Nonetheless, there are a set of behaviours found with so much greater frequency among children with intellectual disabilities that they are commonly considered characteristics of the condition. These include repetitive behaviours, also described as perseverative and passive behaviours or disengagement from activity. The repetition and passivity are manifest during spontaneous play and cognitive activities. Thought to be maladaptive impediments to developmental progress, they are generally targets of educational intervention. In this article we raise the possibility that repetition and passivity, though clearly present in young children with intellectual disabilities, may be misconstrued as always being an impediment to progress. Indeed, these behaviours may at times be appropriate and adaptive responses to coping in a world that moves quickly with a mind that moves slowly. 相似文献
67.
As a wide range of values has been reported for the relative energetics of 400-m and 800-m track running events, this study aimed to quantify the respective aerobic and anaerobic energy contributions to these events during track running. Sixteen trained 400-m (11 males, 5 females) and 11 trained 800-m (9 males, 2 females) athletes participated in this study. The participants performed (on separate days) a laboratory graded exercsie test and multiple race time-trials. The relative energy system contribution was calculated by multiple methods based upon measures of race VO2, accumulated oxygen deficit (AOD), blood lactate and estimated phosphocreatine degradation (lactate/PCr). The aerobic/anaerobic energy system contribution (AOD method) to the 400-m event was calculated as 41/59% (male) and 45/55% (female). For the 800-m event, an increased aerobic involvement was noted with a 60/40% (male) and 70/30% (female) respective contribution. Significant (P < 0.05) negative correlations were noted between race performance and anaerobic energy system involvement (lactate/PCr) for the male 800-m and female 400-m events (r = - 0.77 and - 0.87 respectively). These track running data compare well with previous estimates of the relative energy system contributions to the 400-m and 800-m events. Additionally, the relative importance and speed of interaction of the respective metabolic pathways has implications to training for these events. 相似文献
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Developmental remediation programs designed to raise achievement levels of underprepared students have proliferated in the past decade. Despite the fact that these programs employ a variety of teaching strategies, a substantial subgroup of developmental students are unsuccessful in current remediation programs. They need a different curricular approach. As the number of applicants declines and the demand for generating credit hours continues, the question is shifting from “Should less capable students be allowed to attend college?” to “What curriculum should be provided for these students?” The challenge for the '80s is to expand developmental education to include vocational education and post-secondary specialized education. 相似文献
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We examined effects of participation and forensic context on 4-year-old children's testimony. Children in "participant" and "police" conditions actively participated in games with a "babysitter"; each child in the "observer" condition watched a videotape of a child and the babysitter playing. Eleven days later, children were individually questioned about the event. Before the interview began, children in the police condition talked to a police officer who said the babysitter might have done something bad. Comparison of participant- and observer-condition performance indicated that participation increased free-recall accuracy concerning actions that took place and lowered suggestibility. Comparison of participant- and police-condition performance indicated that forensic context led to increased error in free recall and additional comments to misleading questions. However, forensic context also resulted in higher accuracy on an age-identification task and did not affect children's accuracy in answering abuse-related questions. 相似文献