Activity profile and physical demands of football referees and assistant referees in international games

Abstract

Time-motion analyses and physiological measurements were performed to investigate the physiological demands of football referees (n = 15) and assistant referees (n = 15) in international games and to examine whether high-intensity running (HIR) correlates to the referees' ability to keep up with play. Total distance covered (10.27 ± 0.90 vs. 6.76 ± 0.83 km) and HIR (1.92 ± 0.58 vs. 0.97 ± 0.22 km) was higher (P < 0.05) for referees than assistant referees, while sprinting distance was not different. Referees covered 0.89 ± 0.37 km by backwards running and assistant referees covered 1.54 ± 0.66 km by sideways running. Mean heart rate was higher (P < 0.05) for referees than assistant referees (150 ± 3 vs. 123 ± 3 b.p.m.), whereas blood lactate was not different. Backwards/sideways running decreased (P < 0.05) from the first to the last 15-min period for referees (49%) and assistant referees (42%), whereas HIR was unaltered. HIR was inversely correlated with the five highest distances from infringements in both halves (r = ?0.60 and ?0.58, P < 0.05). In conclusion, international match officials carry out an important amount of HIR throughout games, while low-intensity and unorthodox running activities are reduced during games. Referees performing the most high-intensity work are better to keep up with play. The match activities differ significantly between referees and assistant referees, which should be considered in training and testing procedures.     

“Make the Education of the Youths Our Own Education”: Plato's Laches,a Dialogue for Educators

Through an exegesis of the dramatic elements of Plato's Laches, Brandon Buck and Rachel Longa argue that it is an especially valuable text to read with practicing and preservice teachers. Buck and Longa show how the dialogue illustrates three essential aspects of what education means and involves. First, they show how the dialogue foregrounds the often-obscured role of philosophical inquiry in addressing educational questions. Second, they show how the depiction of aporia in the Laches underscores the importance of uncertainty for the persistence of humanistic conversation, and thus for substantial engagement with core educational questions. Finally, they interpret Socrates to suggest that participation in humanistic conversation is not merely an incidental aspect of education as a profession, but rather precisely what it means to be an educator. In sum, Buck and Longa argue that the Laches illustrates the core idea that in order to educate at all, we must be deeply involved in the very questions that characterize humanistic conversation.     

The provision of higher education in regional areas: an integrative review of the literature

There is a great deal of literature surrounding the needs of regional Australia. This integrative review of the literature focuses on the experience of nursing academics teaching on a satellite campus, many of which are located in regional Australia. Four themes were identified: (1) challenges specific to regional satellite campuses, (2) student characteristics, (3) student experiences and (4) the academics’ experiences. These themes identified not only significant benefits but also considerable challenges to the provision of higher education on regional university campuses. The experience of nursing academics and indeed their students is remarkably different from the experience of their metropolitan counterparts, and therefore the local context needs to be considered in regional education provision. Australian regional nursing academics need to be multi-skilled to address the workload and social inequity in support service provision.     

喧嚣之后,网络公开课何去何从?

人们首次听说"网络公开课"(Massive Open Online Courses)的名字是在本世纪初。从2001年起,耶鲁、剑桥、麻省理工学院等一批世界顶尖高校纷纷将自己的课程公布到网上。如此"慷慨"的知识共享不光让世界各地的学生近距离地领略到国外名校教授的人文内涵与学术魅力,更是掀起了教育史上继远程函授之后的又一次革命。本文从商业中的"颠覆性创新"角度出发,另类解读网络公开课的现状与未来。     

To Think or Not To Think: The apparent paradox of expert skill in music performance

Abstract

Expert skill in music performance involves an apparent paradox. On stage, expert musicians are required accurately to retrieve information that has been encoded over hours of practice. Yet they must also remain open to the demands of the ever-changing situational contingencies with which they are faced during performance. To further explore this apparent paradox and the way in which it is negotiated by expert musicians, this article profiles theories presented by Roger Chaffin, Hubert Dreyfus and Tony and Helga Noice. For Chaffin, expert skill in music performance relies solely upon overarching mental representations, while, for Dreyfus, such representations are needed only by novices, while experts rely on a more embodied form of coping. Between Chaffin and Dreyfus sit the Noices, who argue that both overarching cognitive structures and embodied processes underlie expert skill. We then present the Applying Intelligence to the Reflexes (AIR) approach—a differently nuanced model of expert skill aligned with the integrative spirit of the Noices’ research. The AIR approach suggests that musicians negotiate the apparent paradox of expert skill via a mindedness that allows flexibility of attention during music performance. We offer data from recent doctoral research conducted by the first author of this article to demonstrate at a practical level the usefulness of the AIR approach when attempting to understand the complexities of expert skill in music performance.     

Tipping the Balance from Expert to Facilitator: Examining Myths about Being a Teacher Educator

This self-study addresses two questions: (1) how did self-study aid the teacher educator in interrogating her beliefs about and mediate her projection of teacher-as-facilitator versus teacher-as-expert? and (2) in what ways did prospective elementary teachers in an undergraduate, interdisciplinary science course exert control over their learning as a result of the teacher educator's self-interrogation of practices? In her teaching role with prospective teachers, Nicole explored a major myth about teaching concerning the image of the professor as the primary expert in the classroom. Critical events analysis revealed instances where she exerted power as an expert or assumed the role of facilitator. Instead of clearly marked instances where she took actions to exert her various roles in the classroom, she found that classroom events could not be categorized neatly. There were cases where she acted as an expert and students felt free to make their own decisions about their learning. When she was uncertain or attempted to relinquish control, students often responded by not taking control of their learning.