The Role of Models and Analogies in the Electromagnetic Theory: A Historical Case Study

Despite its great importance, many students and even their teachers still cannot recognize the relevance of models to build up physical knowledge and are unable to develop qualitative explanations for mathematical expressions that exist within physics. Thus, it is not a surprise that analogies play an important role in science education, since students’ construction of mental models of abstract phenomena need to be rooted in some existing or previous experience in order to interpret more complex ideas. The present article focuses on some of these issues by analyzing some specific instances of the historical development of the electromagnetic theory. Using the mental models framework, the importance of mechanical analogies to understand some of the electromagnetic concepts are emphasized.     

A Method to Increase Student Interaction Using Student Groups and Peer Review over the Internet

A method of peer review for student groups is proposed. In this method, groups of students publish their assignments results over the Internet. A fellow student group reviews their work and publishes their findings (on the Internet). Finally, the two groups debate their points of view in front of the class. The debate and healthy competition among groups give the students a chance to learn how to give and receive criticism in a constructive way. This should increase the students' ability to interact and work in groups, an important skill for computer science professionals.     

The effectiveness of a marketing virtual reality learning simulation: A quantitative survey with psychophysiological measures

Virtual reality (VR) technology has been shown to be a promising teaching method in STEM subjects. Extending these findings, the current study is the first to develop and examine the feasibility of using a VR simulation in marketing (ie, a non-STEM subject). Specifically, the levels of immersion and three learning outcomes (learning attitude, enjoyment and performance) were compared between the marketing students who learned the same content through a VR simulation prototype versus a traditional static video presentation. Learning enjoyment was measured using facial electromyography, which served as a more objective measures for the feeling of enjoyment. Compared to the video condition, the results showed that VR resulted in a higher experience of immersion, learning attitude and learning enjoyment. Furthermore, immersion was found to fully mediate the positive effects of the VR simulation on learning attitude, but not enjoyment. Surprisingly, students in the video condition performed better on the knowledge-based test than those in the VR condition. The current study suggests that the current prototype of the VR simulations should be used as supplementary resource to increase the learning attitude and enjoyment, but not as a main teaching material to enhance knowledge-based performance in the marketing discipline.     

Distribution of School Knowledge and Social Reproduction in a Brazilian Urban Setting

The present study was designed to elucidate the ways in which the distribution of school knowledge contributes to processes of cultural and social reproduction. Three schools in the southern Brazilian city of Porto Alegre were studied for this purpose: a private institution serving an upper class clientele; a public school serving children of the middle class; and a public school attended by working‐class children. Two classrooms at each of the three schools were intensively observed during one semester. Teachers and staff were interviewed concerning their pedagogical views.

Patterns of instruction and control observed at the three schools suggest that children from different social classes receive substantially different kinds of schooling. The most obvious distinction in ideological discourse observed among staff members at the three schools concerns the existence of an explicit pedagogy endorsed at the private school and the concomitant absence of any such similar rationale at the other two schools.

The final sections of the paper discuss the implications of these findings for processes of cultural and social reproduction and their relation to relevant literature.     

Field dimension and skill level constrain team tactical behaviours in small-sided and conditioned games in football

Abstract

This study analysed the influence of field dimension and players’ skill level on collective tactical behaviours during small-sided and conditioned games (SSCGs). Positioning and displacement data were collected using global positioning systems (15 Hz) during SSCGs (Gk+4 v. 4+Gk) played by two groups of participants (NLP- national-level and RLP-regional-level players) on different field dimensions (small: 36.8 × 23.8 m; intermediate: 47.3 × 30.6 and large: 57.8 × 37.4 m). Team tactical performance was assessed through established dynamic team variables (effective playing space, playing length per width ratio and team separateness) and nonlinear signal processing techniques (sample entropy of distances to nearest opponents and the teams’ centroids’ mutual information). Results showed that the effective playing space and team separateness increased significantly with pitch size regardless of participant skill level (P < 0.001, η² = 0.78 and P < 0.001, η² = 0.65, respectively). Playing length per width ratio increased with pitch size for the NLP but was maintained at a relatively constant level by RLP across treatments indicating different playing shapes. There was significantly more irregularity in distances to nearest opponents for the NLP in small (P = 0.003) and intermediate fields (P = 0.01). Findings suggest that tactical behaviours in SSCGs are constrained by field size and skill level, which need to be considered by coaches when designing training practices.     

我国体育教育训练学硕士研究生培养方案的再构建

课程设置与培养方案,决定着研究生培养的质量与规格.本研究依据社会发展的不同需求,按照国家深化研究生教育改革的具体要求,试图对现行的体育教育训练学硕士研究生培养方案进行再分析,阐释现行课程方案及研究存在的问题.从而提出改革的相关对策,并尝试重新构建培养模式,以期培养“供求”对接的体育专门人才.     

Pelé, racial discourse and the 1958 World Cup

The aim of this essay is to map out the racial discourses of the 1950s, particularly those pertinent to the 1958 Soccer World Cup, in order to better understand the main ideas about race, which were in vogue at the time when Edson Arantes do Nascimento (Pelé) became (inter)nationally famous as a great sports star. The essay argues that Pelé’s statements regarding race and race relations in Brazil were inherently based on the discourses prevalent among academics and Brazil’s black activists during the 1950s. Pelé’s professional asceticism and his belief in individualism, cultivated during his youth in the city of Bauru, were further reinforced by the racial discourses of the 1950s. These views led him to believe that any discrimination he might encounter due to his colour and class could be overcome with a disciplined and professional attitude. Today, this sort of ascetic view of the world has been accused by certain segments of Brazil’s black movements as being insufficient to overcome the supposedly irresolvable inequalities that exist between Brazil’s black and white populations. Pelé, however, has not changed his position regarding anti-black discrimination, choosing to continue to emphasize professionalism and discipline as the two most formidable tools in the fight against racial discrimination and inequality.