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161.
To assess the effect of cold water immersion and active recovery on thermoregulation and repeat cycling performance in the heat, ten well-trained male cyclists completed five trials, each separated by one week. Each trial consisted of a 30-min exercise task, one of five 15-min recoveries (intermittent cold water immersion in 10 degrees C, 15 degrees C and 20 degrees C water, continuous cold water immersion in 20 degrees C water or active recovery), followed by 40 min passive recovery, before repeating the 30-min exercise task. Recovery strategy effectiveness was assessed via changes in total work in the second exercise task compared with that in the first. Following active recovery, a mean 4.1% (s = 1.8) less total work (P = 0.00) was completed in the second than in the first exercise task. However, no significant differences in total work were observed between any of the cold water immersion protocols. Core and skin temperature, blood lactate concentration, heart rate, rating of thermal sensation, and rating of perceived exertion were recorded. During both exercise tasks there were no significant differences in blood lactate concentration between interventions; however, following active recovery blood lactate concentration was significantly lower (P < 0.05; 2.0 +/- 0.8 mmol . l(-1)) compared with all cold water immersion protocols. All cold water immersion protocols were effective in reducing thermal strain and were more effective in maintaining subsequent high-intensity cycling performance than active recovery. 相似文献
162.
Mohammad M. N. Esfahani Mark D. Tarn Tahmina A. Choudhury Laura C. Hewitt Ashley J. Mayo Theodore A. Rubin Mathew R. Waller Martin G. Christensen Amy Dawson Nicole Pamme 《Biomicrofluidics》2016,10(1)
The ability to engage and inspire younger generations in novel areas of science is important for bringing new researchers into a burgeoning field, such as lab-on-a-chip. We recently held a lab-on-a-chip workshop for secondary school students, for which we developed a number of hands-on activities that explained various aspects of microfluidic technology, including fabrication (milling and moulding of microfluidic devices, and wax printing of microfluidic paper-based analytical devices, so-called μPADs), flow regimes (gradient formation via diffusive mixing), and applications (tissue analysis and μPADs). Questionnaires completed by the students indicated that they found the workshop both interesting and informative, with all activities proving successful, while providing feedback that could be incorporated into later iterations of the event. 相似文献
163.
Joanna Tai Rola Ajjawi David Boud Phillip Dawson Ernesto Panadero 《Higher Education》2018,76(3):467-481
Evaluative judgement is the capability to make decisions about the quality of work of oneself and others. In this paper, we propose that developing students’ evaluative judgement should be a goal of higher education, to enable students to improve their work and to meet their future learning needs: a necessary capability of graduates. We explore evaluative judgement within a discourse of pedagogy rather than primarily within an assessment discourse, as a way of encompassing and integrating a range of pedagogical practices. We trace the origins and development of the term ‘evaluative judgement’ to form a concise definition then recommend refinements to existing higher education practices of self-assessment, peer assessment, feedback, rubrics, and use of exemplars to contribute to the development of evaluative judgement. Considering pedagogical practices in light of evaluative judgement may lead to fruitful methods of engendering the skills learners require both within and beyond higher education settings. 相似文献
164.
165.
Spencer M Lawrence S Rechichi C Bishop D Dawson B Goodman C 《Journal of sports sciences》2004,22(9):843-850
Limited information exists about the movement patterns of field-hockey players, especially during elite competition. Time-motion analysis was used to document the movement patterns during an international field-hockey game. In addition, the movement patterns of repeated-sprint activity were investigated, as repeated-sprint ability is considered to be an important fitness component of team-sport performance. Fourteen members of the Australian men's field-hockey team (age 26+/-3 years, body mass 76.7+/-5.6 kg, VO2max 57.9+/-3.6 ml.kg(-1).min(-1); mean+/-s) were filmed during an international game and their movement patterns were analysed. The majority of the total player game time was spent in the low-intensity motions of walking, jogging and standing (46.5+/-8.1, 40.5+/-7.0 and 7.4+/-0.9%, respectively). In comparison, the proportions of time spent in striding and sprinting were 4.1+/-1.1 and 1.5+/-0.6%, respectively. Our criteria for 'repeated-sprint' activity (defined as a minimum of three sprints, with mean recovery duration between sprints of less than 21 s) was met on 17 occasions during the game (total for all players), with a mean 4+/-1 sprints per bout. On average, 95% of the recovery during the repeated-sprint bouts was of an active nature. In summary, the results suggest that the motion activities of an elite field-hockey competition are similar to those of elite soccer, rugby and Australian Rules football. In addition, the investigation of repeated-sprint activity during competition has provided additional information about the unique physiological demands of elite field-hockey performance. 相似文献
166.
167.
The research reported is an attempt to widen the applicability of Piagetian theory-based conflict methodology from individual situations to whole classes. A Solomon four group experimental design augmented by a delayed posttest, was used to provide a controlled framework for studying the effects of conflict instruction on Grade 8 students' ability to conserve volume of noncompressible matter, and to apply that knowledge to gas volume. The results, reported for individuals and groups, show the methodology can be effective, particularly when instruction is preceded by a pretest. Immediate posttest differences in knowledge of gas volume between spontaneous (pretest) conservers and instructed conservers of volume of noncompressible matter were no longer in evidence on the delayed posttest. This observation together with the effects of pretesting and of the instructional sequence are shown to have a consistent Piagetian interpretation. Practical implications are discussed. 相似文献
168.
Kuhn (1989) has argued that at the heart of the ability to reason scientifically is the process of differentiating existing
mental models (i.e. theory) from new data. In this regard she has proposed a developmental sequence in which, in the early
stages, theory and data are fully integrated and are used interchangeably. Later, when theory and data are compatible, they
tend to be moulded together as ‘the way things are’, but when they are incompatible conflict is avoided by the use of strategies
which bring the two into line: these strategies often include selective attention to the data. Only at the upper levels of
this developmental spectrum are theory and data conscientiously differentiated, with each being used to reflect on the other.
This paper analyses the responses made by Year 11 students to problems which required them to evaluate a prediction based
on some provided data. The problems were set in two contexts, one scientific and one social, and the predictions to be evaluated
combined plausibility/implausibility and validity/invalidity.
The response patterns were very similar to those described by Kuhn, and the implications of this for teachers, especially
those attempting to use conflict based teaching approaches, are developed.
Specializations: science teacher education, scientific problem solving, changing students’ alternative conceptions.
Specializations: psychological theories applied to science education. 相似文献
169.
Hyemin Han Kelsie J. Dawson Stephen J. Thoma Andrea L. Glenn 《Journal of Experimental Education》2020,88(4):660-675
AbstractWe developed and tested a behavioral version of the Defining Issues Test-1 revised (DIT-1r), which is a measure of the development of moral judgment. We conducted a behavioral experiment using the behavioral Defining Issues Test (bDIT) to examine the relationship between participants’ moral developmental status, moral competence, and reaction time when making moral judgments. We found that when the judgments were made based on the preferred moral schema, the reaction time for moral judgments was significantly moderated by the moral developmental status. In addition, as a participant becomes more confident with moral judgment, the participant differentiates the preferred versus other schemas better particularly when the participant’s abilities for moral judgment are more developed. 相似文献
170.
Dawson R. Hancock Claudia P. Flowers 《Educational technology research and development : ETR & D》2001,49(1):5-13
Social desirability responding (SRD) on surveys administered on the World Wide Web (WWW) and on paper was examined using 178
graduate and undergraduate students randomly assigned to a 2 (World Wide Web and Paper) ×2 (Anonymous and Nonanonymous) true
experimental design. The findings reveal no differences in SDR between the WWW and the paper-administered survey conditions,
and no differences in SDR between the anonymous and nonanonymous conditions. These findings and potential explanations are
examined for consideration by anyone interested in using the WWW to obtain accurate information from survey participants. 相似文献