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991.
引入了模糊BH-代数和模糊拓扑BH-代数的概念,给出了一些有关的性质,并用Foster关于同态象和同态逆象的结构讨论了模糊拓扑BH-代数。  相似文献   
992.
A system of research assessment was developed and implemented inHong Kong during the period from 1991 to 1994 as an input to theassessment of the public recurrent funding allocations of theterritory's higher education institutions and as an extension ofthe University Grants Committee's other quality assuranceactivities. Refinements were subsequently introduced for the nexttwo assessment exercises in 1996 and 1999. This paper describesthe evolution of the process, identifies some significantdifferences from that in the UK on which it was modelled, andevaluates the 1999 research assessment exercise, in particularthe application in that context of the Carnegie Foundation'sdefinitions of research and research-related scholarlyactivities, viz. the scholarships of ``discovery, integration,application and teaching'.  相似文献   
993.
Web 2.0-based cultural diffusion occurs not only through viral word-of-mouth communication but also through Internet memes in which cultural consumers review, resemble, and recreate old cultural components, resulting in the creation of new cultural forms. YouTube features a platform for memetic creation with a host of user-generated parodies, reviews, and mashups derived from viral videos. This study examines the cultural ecosystem of YouTube memes inspired by Korean artist Psy’s viral production “Gangnam Style.” The study focuses on the salience of various genres of YouTube memes and structural connections between memetic videos. According to the results, the viral video of “Gangnam Style” sparked a sizable amount of user creativity, including remixes, parodies, self-directed performances, and reviews, among others. A network analysis of connections between memetic videos shows that various memetic genres drew different levels of audience attention and actions across various stages of the 3-month-long diffusion process. In addition, the content of the traditional mass media played a key role in giving the viral video wider publicity and acknowledgement, but this role was later shared by user-generated content.  相似文献   
994.
Children of color are more likely to have poor sleep health than White children, placing them at risk for behavioral problems in the classroom and lower academic performance. Few studies, however, have utilized standardized measures of both classroom behavior and achievement. This study examined whether children’s sleep (parent and teacher report) in first grade concurrently related to independent observations of classroom behavior and longitudinally predicted achievement test scores in second grade in a sample of primarily Black (86%) children (n = 572; age = 6.8) living in historically disinvested neighborhoods. Higher teacher-reported child sleepiness was associated with lower adaptive behaviors and higher problem behaviors in the classroom, and predicted lower achievement. Parent-reported bedtime resistance and disordered breathing also predicted lower achievement.  相似文献   
995.
Grit, the tendency to work hard toward long-term goals, maintaining effort and interest over years despite failure and adversity, has predicted several achievement outcomes. However, minimal work has examined grit within a sport expertise development framework, and specifically its association with deliberate practice (DP) in sport. Participants, 250 athletes (109 female; Mage = 23.40, SD = 10.14), completed the 12-item Grit Scale, practice measures, and reported their skill level (local to international). Factor analyses confirmed a 10-item two-factor model for use in our sport sample: consistency of interests (CI; 6 items; α = .81) and perseverance of effort (PE; 4 items; α = .75). A full latent variable model controlling for age showed PE significantly predicted weekly amounts of DP and engagement in mandatory and optional practice contexts; CI was inversely associated with threats to athletes’ sport commitment. Among senior athletes, both Expert and Advanced skill groups had higher PE levels than a Basic/Intermediate group, ps < .05. The tendency to work hard toward long-term goals seemingly enables athletes to persist with practice activities that are pivotal to expert sport development.  相似文献   
996.
The present study investigated the relative importance of executive functioning, parent–child verbal interactions, phonological awareness and visual skills on reading and mathematics for Chinese children from low-versus middle-socio economic status (SES) backgrounds. A total of 199 kindergarten children were assessed on executive functioning, verbal interactions, phonological awareness, visual skills, mathematics and word reading in Chinese and English. Results revealed that low-SES children exhibited lower levels of cognitive-linguistic skills, verbal interactions, reading and mathematics achievement than their middle-SES counterparts. Path analyses also indicated that executive functioning and verbal interactions made significant and direct contributions to mathematics, and indirect contributions to reading through phonological awareness. These results suggest that executive functioning and verbal interactions provide the foundation for phonological awareness and visual skills, which in turn affect reading and mathematics achievement. Overall, findings underscore the potential importance of SES inequalities, cognitive-linguistic skills and parental verbal input to their children for early reading and mathematics achievement.  相似文献   
997.
Assessment of situated learning using computer environments   总被引:3,自引:1,他引:3  
Based on a theory of situated learning, assessment must emphasize process as much as product. Assessment must move away from a linear additive model, accepting at the outset the complex, nonlinear, and possibly chaotic nature of real learning. Assessment must adapt to and take advantage of students working with technologies that extend their perceptual and problem-solving capacities beyond what they could do alone. To illustrate these points, several assessment examples are given, including a computer-based planning assistant for a videodisc mathematics and science video, suggestions for computer-based portfolio assessment, and speculations about embedded assessment of virtual situations. In all cases, the theory of situated learning emphasized perception over memory and the codetermined nature of learning and thinking.  相似文献   
998.
999.
In 1989, Miller and Aloise challenged the prevailing belief that preschoolers tend to explain others' behavior in terms of external events or a person's physical attributes and have little understanding of psychological causes. That review documented preschoolers' understanding of, and even preference for, psychological causes as part of an emerging renaissance in developmental social‐cognitive research. The present, updated review (97 articles, participant ages 3 months to 6 years) suggests the emergence of a transformative new perspective in which social‐cognition is balanced between social and cognitive aspects rather than tilted toward cognition. Recent research on infants' awareness of mental states, young children's understanding of social categories and their judgments of the trustworthiness of informants, and cultural context reveals various ways in which preschoolers' social‐causal reasoning is social.  相似文献   
1000.
Primary school teachers rated the frequency of occurrence of 65 reading‐related behavioural characteristics in a sample of 251 Grade 1 to Grade 6 Chinese school children in Hong Kong. These behavioural characteristics were in the areas of general performance, reading, dictation, writing, mathematics, language, memory, concentration, sequential ability, motor co‐ordination, spatial orientation, and social/emotional adjustment. Of these 12 areas, 10 yielded scale scores that could distinguish children with dyslexia from those without dyslexia, identified on the basis of their performance in five domains of literacy and cognitive skills. Using a summary score derived from the 10 relevant scales, an optimal cut‐off score was suggested to arrive at a balance between high sensitivity and an acceptable rate of false positives in screening for children with dyslexia. The need for cross‐replication in screening children with dyslexia using the behaviour checklist with different samples of school students is emphasised.  相似文献   
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