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31.
Ruben Schalk 《History of education》2015,44(2):131-155
Several European countries were unable to match student numbers with labour market demand during the nineteenth century. The causes of this mismatch may be found in the organisation of higher education and the funding of students. Drawing on a variety of sources, this paper compares financial support available to Reformed and Catholic theology students in The Netherlands, to examine how differences in student funding affected enrolment and labour-market patterns. While low tuition fees increased access to the public universities, generous student financing provided by numerous parties caused a structural oversupply of Protestant theology students. The private Catholic colleges instead selected students and applied grants specifically to encourage graduation, consequently balancing students more closely with labour-market demand. This relative success of regional colleges over national universities mirrors the primary education history literature on the benefits of local coordination and resource allocation. 相似文献
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Peter Larsson Lennart Burlin Erkki Jakobsson Karin Henriksson-Larsen 《Journal of sports sciences》2013,31(7):529-535
The aim of this study was to determine the physiological responses to orienteering by examining the interrelationships between the information provided by a differential global positioning system (dGPS) about an orienteer's route, speed and orienteering mistakes, portable metabolic gas analyser data during orienteering and data from incremental treadmill tests. Ten male orienteers completed a treadmill threshold test and a field test; the latter was performed on a 4.3 km course on mixed terrain with nine checkpoints. The anaerobic threshold, threshold of decompensate . dmetabolic acidosis, respiratory exchange ratio, onset of blood lactate accumulation and peak oxygen uptake (V O2peak ) were determined from the treadmill test. Time to complete the course, total distance covered, mean speed, distance and timing of orienteering mistakes, mean oxygen uptake, mean relative heart rate, mean respiratory exchange ratio and mean running economy were computed from the dGPS data and metabolic gas analyser data. Correlation analyses showed a relationship between a high anaerobic threshold a . nd few orienteering mistakes ( r = - 0.64, P ? 0.05). A high threshold of decompensated metabolic acidosis and V O2peak were related to a fast overall time ( r = - 0.70 to- 0.72, P ? 0.05) and high running speed ( r = 0.64 to 0.79, P ? 0.05 and P ? 0.01, respectively), and were thus the best predictors of performance. 相似文献
34.
Kim Nolte Pieter E. Krüger P. Schalk Els Heinrich Nolte 《Journal of sports sciences》2013,31(3):264-275
Abstract The aim of this study was to evaluate the benefits and limitations of using three dimensional (3D) musculoskeletal modelling (LifeModelerTM) in assessing the safety and efficacy of exercising on an abdominal crunch resistance training machine. Three anthropometric cases were studied, representing a 5th percentile female, and 50th percentile and 95th percentile male. Results indicated that the LifeModelerTM default model was capable of solving the forward dynamics simulations without adjustments. The modelling was able to indicate high risk for back injury when performing the abdominal crunch exercise as a result of the unacceptable intervertebral joint loading that occurs during the exercise. Individuals with small anthropometric dimensions such as some females and children cannot be accommodated suitably on the abdominal crunch machine which negatively impacts exercise posture and technique. Hip flexor muscle contribution in the execution of the exercise for the 5th percentile female was substantial thus reducing the efficacy of the exercise in isolating the abdominal muscles. 相似文献
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Consumers innovate usually for non-commercial motives. They generally lack incentives to diffuse, and this is expected to hamper first adoption – even if consumer innovations are valuable to many other people. We confirm this market failure with survey data of 164 German consumer innovators. First adoption by others is unrelated with general use value, unless the innovator is highly willing to commercialize. Next, as classical diffusion theory does not explain when consumer innovations become available to others, we propose an individual-object-process (I-O-P) framework to study factors alleviating the market failure. The viability of the framework is explored by studying the moderating role of entrepreneurial experience (I), product newness (O) and community engagement during the innovation process (P). First adoption of generally valuable consumer innovations is enhanced when a community was involved. We also find tentative evidence for a moderating role of entrepreneurial experience and product newness. 相似文献
37.
Eivind Aadland Gunnar Noer Odd Lennart Vikene 《Journal of Adventure Education & Outdoor Learning》2016,16(2):131-145
The aims of this study were to analyse recreational sea kayaking and touring incidents in Norway with a specific focus on wind conditions and to elaborate on practical implications for the prevention of future incidents. We included 49 incidents reported by the media between 2000 and 2014. Incidents occurred in various wind conditions, but most incidents (60%) occurred in moderate to strong breezes (9–14 m/s). Wind strength and direction were generally forecast accurately and conditions were mainly stable throughout the day of the incident. Thus, sea kayaking and touring incidents in Norway seem to happen in various wind conditions; however, paddlers should have been well informed and aware of the hazards they were facing. Future incidents could be prevented by increasing sea kayakers’ situation awareness through discussion of experts’ decision-making processes and the arrangement of situated learning experiences in realistic settings. 相似文献
38.
The conceptualization of cases of physical motion 总被引:1,自引:0,他引:1
Lennart Svensson 《European Journal of Psychology of Education - EJPE》1989,4(4):529-545
The question addressed in the present article concerns the contextual character of students’ conceptions of cases of psysical motion. An interview investigation with students following the mechanical engineering line of study at Chalmers University of Technology, Göteborg, Sweden was carried out during the students’ first year of study, before and after their first course in Mechanics. In the interviews, the students were verbally presented with eight cases of physical motion, four before and four after the course. The analysis of the conceptualization of physical motion points clearly to the very restricted contextual character of the conceptions of the cases. In previous research, the tradition of describing thinking and knowledge in terms of cognitive structures, shemas, models and so on, is very dominant. In relation to our results, one problem with the focus on cognitive structures is the assumptions made about generality across case or instances. Also, the students’ starting-point for their reasoning about the cases is not in any conceptual framework but in the specific cases. The conceptualizations are related to the students’ previous experiences rather than to any clearly delimited and structured conceptual framework. 相似文献
39.
Melanie Knufinke Lennart Fittkau-Koch Els I. S. Møst Michiel A. J. Kompier Arne Nieuwenhuys 《European Journal of Sport Science》2019,19(6):728-735
Sleep is crucial for recovery and skill acquisition in athletes. Paradoxically, athletes often encounter difficulties initiating and maintaining sleep, while having sufficient sleep opportunity. Blue (short-wavelength) light as emitted by electronic screens is considered a potential sleep thief, as it suppresses habitual melatonin secretion. The current study sought to investigate whether blocking short-wavelength light in the evening can improve sleep onset latency and potentially other sleep parameters among recreational athletes. The study had a within-subject crossover design. Fifteen recreational athletes, aged between 18 and 32 years (12 females, 3 males), were randomly assigned to start the intervention period with either the light restriction condition (LR; amber-lens glasses), or the no-light restriction condition (nLR; transparent glasses). Sleep hygiene practices, actigraphy and diary-based sleep estimates were monitored during four consecutive nights within each condition. Sleep hygiene practices did not significantly differ between conditions. Results indicate that blocking short-wavelength light in the evening, as compared to habitual light exposure, significantly shortened subjective sleep onset latency (Δ?=?7?min), improved sleep quality (Δ?=?0.6; scale 1–10), and increased alertness the following morning. Actigraphy-based sleep estimates showed no significant differences between conditions. Blocking short-wavelength light in the evening by means of amber-lens glasses is a cost-efficient and promising means to improve subjective sleep estimates among recreational athletes in their habitual home environment. The relatively small effects of the current study may be strengthened by additionally increasing morning- and daytime light exposure and, potentially, by reducing the alerting effects of media use before bedtime. 相似文献
40.
Lennart Svensson Elsie Anderberg Christer Alveg?rd Thorsten Johansson 《Instructional Science》2009,37(3):205-225
Empirical results show that frequently the meaning of expressions used by students in expressing their understanding of subject
matter does not correspond to the meaning of those expressions in the subject matter theory that the students are expected
to learn. There is also often a lack of identity of meaning between the same students’ use of the same expression from one
use of the expression to another, in very similar contexts. The context gives a specific meaning to any expression. This variation
in context and meaning is very central to the phenomena of teaching and learning. In educational research there is a need
to differentiate between specific meanings expressed in conceptualizing subject matter, on the one hand, and concepts and
meanings seen as parts of cognitive systems and social languages, on the other. The contextual character of the use of language
is crucial to the understanding of teaching and learning and needs to be more carefully considered. The article is a discussion
of the problem of varying meanings of language expressions in relation to major traditions of research, focusing on meanings
and concepts within the field of learning and teaching. 相似文献