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731.
Purificación Rodríguez M. Oliva Lago M. Lourdes Hernández Laura Jiménez Silvia Guerrero Sonia Caballero 《European Journal of Psychology of Education - EJPE》2009,24(4):529-543
Division-With-Remainder (DWR) problems are particularly complex, as suggested in many studies. The purpose of this work was to establish whether students’ difficulties in DWR problems came from an inadequate initial representation or from an inadequate final interpretation of the numerical answers, and whether remainders could be grouped into two blocks depending on the kind of answer, either directly matching the terms of the division or not. Forty-five Spanish secondary students, aged 12–13, were requested to solve two Types of Division Situations (i.e., Equal Groups and Comparison), each one involving four Types of Remainder (i.e., Remainder-Not-Divisible, Remainder-Divisible, Remainder-as-the-Result, and Readjusted-Quotient-by-Partial-Increments). Our data showed that: (a) the selection of the correct solution procedure depended on the Type of Division Situations, being easier in Equal Groups than in Comparison problems; (b) correct interpretations were higher than the percentages reported in other researches; and (c) success in problems whose answers were the quotient or the remainder was higher than in Readjusted-Quotient-by-Partial-Increments problems. The results obtained suggest that students’ difficulties originate in the initial representation of the DWR problems and that it would be more adequate to refer to the difficulty of Readjusted-Quotient-by-Partial-Increments problems in particular, rather than to the difficulty of DWR problems in general. 相似文献
732.
Prudence Merton Jeffrey E. Froyd M. Carolyn Clark Jim Richardson 《Innovative Higher Education》2009,34(4):219-233
We examined two curricular change efforts at a small, midwestern engineering and science college in order to explore how organizational
culture influences curricular change processes. We found that the failure of one effort (measured by inability to sustain
the curriculum over time) and the success of the other (the curriculum continues to be offered by the institution) were directly
linked to how well the change strategies aligned with the culture of the institution. 相似文献
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Abstract Zoos have some choice about which pro‐wildlife behaviors to ask their visitors to do, but with this freedom comes the difficult task of choosing behaviors that are appropriate, effective, and that do not affect visitors’ experiences. This paper presents attributes of pro‐wildlife behaviors that emerged from self‐completed questionnaires administered to 114 zoo visitors. Questions sought to elicit attributes that visitors felt should be considered in the behavior selection process. The results say that behaviors should: have an on‐site option; be new, or if known, include new learning that underpins why they are needed; be easy to do; and have a clear link between the behavior and how it helps wildlife. Respondents also made comments about specific behaviors as well as how behaviors should or should not be requested. We suggest that visitors’ perspectives be incorporated into pro‐wildlife behavior selection in zoos, and we propose that these findings may be relevant beyond zoos. 相似文献
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736.
The Center for Science and Technology Studies at Leiden University advocates the use of specific normalizations for assessing research performance with reference to a world average. The Journal Citation Score (JCS) and Field Citation Score (FCS) are averaged for the research group or individual researcher under study, and then these values are used as denominators of the (mean) Citations per publication (CPP). Thus, this normalization is based on dividing two averages. This procedure only generates a legitimate indicator in the case of underlying normal distributions. Given the skewed distributions under study, one should average the observed versus expected values which are to be divided first for each publication. We show the effects of the Leiden normalization for a recent evaluation where we happened to have access to the underlying data. 相似文献
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739.
Tobias Alt Axel J. Knicker Jannik Severin Dennis Horn Yannick T. Nodler Heiko K. Strüder 《Measurement in physical education and exercise science》2020,24(2):123-128
ABSTRACTMany sports demand high forces at high movement speeds. Joint power combines these two measures and is frequently analyzed by isokinetic tests. However, various concepts of assessing joint power lead to conflicting results. The aim was to examine different methods to calculate peak power during isokinetic knee tests of sixty-one healthy male participants (20 y, 182 cm, 76 kg). Unilateral movements of the eccentrically working hamstrings and the concentrically working quadriceps at 150°/s were captured by high-speed cameras. Peak power derived from isokinetic data was significantly higher (p < 0.01, d > 1.54) compared to the camera-based kinematic procedures. To achieve best accuracy, peak power should be derived from the camera-based joint angular velocity and the measured moment at time of peak power during the dynamometer’s isokinetic range of motion. A meaningful assessment of isokinetic joint power should incorporate a camera-based kinematic analysis to account for potential measuring inaccuracies owing to anatomical features, axis misalignment, and tissue deformation. 相似文献
740.
Jim Stevenson 《Educational Media International》2013,50(4):30-31
Those of us who work in education and in broadcasting have been dominated, for many years now, with thought, discussion and innumerable papers — almost to the point of tedium — with what we call ‘new technology’. What we mean by new technology are those aspects of the enormous space race-induced changes in the last quarter of the twentieth century which directly affect the making and using of audio-visual materials. 相似文献