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Joshua S. Redford Keith W. Thiede Jennifer Wiley Thomas D. Griffin 《Learning and Instruction》2012,22(4):262-270
Two experiments explored concept map construction as a useful intervention to improve metacomprehension accuracy among 7th grade students. In the first experiment, metacomprehension was marginally better for a concept mapping group than for a rereading group. In the second experiment, metacomprehension accuracy was significantly greater for a concept mapping group than for a control group, while a group of students who were given already constructed concept maps had accuracy between these two groups. In both experiments, control groups had poor metacomprehension accuracy. That is, they performed worse on tests they predicted better performance and performed better on tests they predicted worse performance. Although constructing concept maps did not produce the same high level of accurate monitoring previously reported in the literature, it still reduced the illusion of knowing. 相似文献
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ABSTRACT Surface compliance has been shown to affect leg stiffness and energetics. It is unknown if compliance differences between common treadmills would elicit such changes. Therefore, the purpose of this study was to determine if compliance design differences of common treadmills would affect the mechanics and energetics of running. Eleven runners ran at moderate, self-selected, matched belt speeds for three minutes on two treadmills: compliant (CT) and rigid (RT) decks. During the last minute of each trial, oxygen consumption and six markers describing the torso, thigh, shank and foot, and one marker to determine treadmill deflection were recorded. Leg stiffness, continuous relative phase (CRP) and CRP variability were calculated. Compared to RT, running on CT resulted in a significantly more compliant leg (8.591 kN?m?1 > 9.063 kN?m?1), lower oxygen consumption (34.69 ml?kg?1?min?1 < 36.86 ml?kg?1?min?1), different coordination patterns and greater variability, particularly during the push-off phase. These results are inconsistent with the literature because the deck of CT rebounds back at the runner during the absorption phase and away from the runner during the push-off phase. Therefore, care should be taken when using treadmills for research and comparing mechanical and energetic measures between studies. 相似文献
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Joshua Fahey Lawrence 《Reading and writing》2012,25(5):1113-1141
In this study, I used individual growth modeling methods to examine the English word-learning trajectories of adolescent students
(N = 278) whose parents speak English at home (n = 210) and those whose parents speak a language other than English (n = 68). Sixth- (n = 130) and seventh-grade (n = 148) students attending an urban middle school took part in the study, with each student contributing up to four occasions
of vocabulary-achievement data across three school years. I used the group reading and diagnostic evaluation (GRADE), a 40-item,
group-administered assessment to measure vocabulary achievement. Students also provided information about the amount of time
they spent reading independently during the summer and during the school year. Principal predictor variables included days
between assessments, student home language, student free and reduced lunch status, time spent independent reading, and a dummy
variable for the number of summers experienced between testing periods. On average, middle-school students experienced a loss
of vocabulary over the summer, however students who spoke a language other than English at home had more pronounced summer
setback and steeper learning trajectories, even when controlling for well-known predictors of vocabulary like independent
reading and predictors of summer loss like free and reduced lunch status. These findings corroborate research showing low-income
students experience summer loss, but suggest that in urban schools serving mostly low-income students, home-language status
may be a stronger predictor of summer loss than socio-economic status or reading amount. 相似文献
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Lin TJ Anderson RC Hummel JE Jadallah M Miller BW Nguyen-Jahiel K Morris JA Kuo LJ Kim IH Wu X Dong T 《Child development》2012,83(4):1429-1443
This microgenetic study examined social influences on children's development of analogical reasoning during peer-led small-group discussions of stories about controversial issues. A total of 277 analogies were identified among 7,215 child turns for speaking during 54 discussions from 18 discussion groups in 6 fourth-grade classrooms (N = 120; age M=10.0, SD=0.6). Use of analogy was found to spread among the children in discussion groups and occur at an accelerating rate, primarily because of the increasing use of novel analogies. Relational analogies with shared surface features triggered purely relational analogies during the next 2 speaking turns, showing a trend of relational shift. These results provide distinctive new evidence for the importance of social interaction in an aspect of cognitive development. 相似文献
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Joshua Klugman 《Research in higher education》2012,53(8):803-830
Previous studies argued that high school resources play a modest role in students?? postsecondary destinations, but they ignored schools?? programmatic resources, which provide opportunities for marks of distinction, such as Advanced Placement courses, and they focused on older cohorts of high school students who entered colleges before competition over admission to selective colleges intensified in the 1980s. Analyses of data on a cohort of students who entered college in the mid-2000s suggest that programmatic and non-programmatic resources found in high schools influence postsecondary destinations and mediates the effect of family socioeconomic status on choices among 4-year colleges. 相似文献