“数学核心素养”导向下的考生水平分析与反思——以2018年高考(天津卷)数学(文史类)试卷为例

依据2018年高考(天津卷)数学(文史类)试卷实测数据,通过研究"一体四层四翼"高考评价体系在试卷中的体现来分析试题特色,并参照《考生水平表现标准(数学)》,对2018年天津高考文科考生数学核心素养的水平表现及反映出的教学问题进行评价和分析,提出有针对性的教学建议。     

梁实秋散文创作论略

梁实秋散文大致可分为:"雅舍"精神内核自述,世相人情、社会风尚的描摹,对旧情往事及昔人的追述,托物言志、感物抒怀之作,对故土风物的追述和反刍等五种类型,这些散文集中反映了梁实秋散文"闲适雅淡"、"幽默风趣,寓庄于谐;言简意深,雅致醇厚,讲究文调;引经据典,广征博引"的散文创作风格和艺术特色,由此铸就了梁实秋饮誉文坛的散文大家的地位.     

Individual and contextual factors in ethical decision making: A case study of the most significant doping scandal in Canadian university sports history

This case study is written for instructors of sport management courses focused on ethics and integrity-related issues in team environments. The case highlights the real world example of the University of Waterloo Warriors varsity football that, in 2010, experienced the most significant doping scandal in Canadian university sports history, with a total of nine anti-doping rule violations asserted through the Canadian Centre for Ethics in Sport. This case study also incorporates the findings of an independent review of the Waterloo football program in relation to the use of banned substances, and includes first-hand accounts from Bob Copeland who was the acting director of athletics. These findings are then interpreted in the context of relevant theory related to performance enhancing drugs (PEDs) use. Along with the findings of this review, which included interviews with athletes, coaches, and administrators, the case study provides important insights into ethical decision making processes and leadership structures in a team sport environment. Particular emphasis is placed on the role that individual cognitive antecedents and contextual organizational factors (i.e., policies, leadership, ethical climate, and infrastructure) play in ethical decision-making processes.     

The effects of static stretching on speed and agility: One or multiple repetition protocols?

Although static stretching (SS) is utilized during warm-up before training and competition, the results about its effects on performance remain controversial. We examined whether performing a stretch of short-to-moderate duration (<60 sec) in a single repetition produces a similar or different effect on speed and agility performance from the effect which is produced while performing the same stretch in multiple repetitions of the same total duration. According to a repeated measurement design, 40 trained males were randomly assigned to either (1) a single repetition group or (2) a multiple repetition group. The participants in each group performed five trials: a control trial (no stretches were performed) and four experimental trials of SS protocols consisting of five exercises performed at either 20 sec (2 × 10 in the second group), 30 sec (3 × 10 in the second group), 40 sec (4 × 10 in the second group) or 60 sec (6 × 10 in the second group) of total duration. A two-way repeated measures analysis of variance showed that the participants in both group improved their speed performance in response to the 20-sec trial, whereas agility remained unaffected. Data analysis also revealed that the repetition number did not affect speed and agility performance. These data suggest that SS of short duration (<30 sec) may actually improve acute speed performance, whereas SS of moderate duration may not hamper speed and agility performance. Moreover, the effects of SS protocols are related to the total duration of each exercise and not to the number of repetitions in which each exercise is performed.     

Development of perceived competence,tactical skills,motivation, technical skills,and speed and agility in young soccer players

ABSTRACT

The objective of this 1-year, longitudinal study was to examine the development of perceived competence, tactical skills, motivation, technical skills, and speed and agility characteristics of young Finnish soccer players. We also examined associations between latent growth models of perceived competence and other recorded variables. Participants were 288 competitive male soccer players ranging from 12 to 14 years (12.7 ± 0.6) from 16 soccer clubs. Players completed the self-assessments of perceived competence, tactical skills, and motivation, and participated in technical, and speed and agility tests. Results of this study showed that players’ levels of perceived competence, tactical skills, motivation, technical skills, and speed and agility characteristics remained relatively high and stable across the period of 1 year. Positive relationships were found between these levels and changes in perceived competence and motivation, and levels of perceived competence and speed and agility characteristics. Together these results illustrate the multi-dimensional nature of talent development processes in soccer. Moreover, it seems crucial in coaching to support the development of perceived competence and motivation in young soccer players and that it might be even more important in later maturing players.     

Multivariate analyses of individual variation in soccer skill as a tool for talent identification and development: utilising evolutionary theory in sports science

The development of a comprehensive protocol for quantifying soccer-specific skill could markedly improve both talent identification and development. Surprisingly, most protocols for talent identification in soccer still focus on the more generic athletic attributes of team sports, such as speed, strength, agility and endurance, rather than on a player’s technical skills. We used a multivariate methodology borrowed from evolutionary analyses of adaptation to develop our quantitative assessment of individual soccer-specific skill. We tested the performance of 40 individual academy-level players in eight different soccer-specific tasks across an age range of 13–18 years old. We first quantified the repeatability of each skill performance then explored the effects of age on soccer-specific skill, correlations between each of the pairs of skill tasks independent of age, and finally developed an individual metric of overall skill performance that could be easily used by coaches. All of our measured traits were highly repeatable when assessed over a short period and we found that an individual’s overall skill – as well as their performance in their best task – was strongly positively correlated with age. Most importantly, our study established a simple but comprehensive methodology for assessing skill performance in soccer players, thus allowing coaches to rapidly assess the relative abilities of their players, identify promising youths and work on eliminating skill deficits in players.     

樊振东接发球拧拉技术运用特征研究

运用Simi Scout软件对樊振东在2014~2015年参与的20场比赛中接发球拧拉技术的运用情况进行统计分析。结果表明：樊振东接发球拧拉力量大、旋转强、速度快、落点刁钻,使用率非常高,具有很强的攻击性;在全台全方位的拧拉,接反手位短球时拧拉使用比例最高,落点主要以对手的反手位为主;但在拧拉时发力狠、动作大、还原稍慢,且线路较单一。     

高职高专校园体育文化的特征与功能新论

校园体育文化是校园文化的重要组成部分。加强高职高专院校体育文化建设,进一步探讨、研究校园体育文化的特征与功能,对促进体育教学与体育传播,营造良好的体育氛围以及推进职业素质教育具有积极的作用。     

贺州市贺街本地话同音字汇

描写广西贺州市贺街本地话的音系,内容主要包括本地话的声韵调和语音特点、同音字汇两个部分.     

国际经验对建构中国教师教育新体系的启示

网络化时代的到来、全球经济的发展、知识经济的出现呼唤国际性和创新型人才。中国“普九”任务基本完成。基础教育课程改革深入开展，使以提高教师实施素质教育的能力和水平为重点的教师专业化走向新历程。这是中国教师教育新体系构建的时代背景。国际教师教育经验为建构中国教师教育新体系提供了启示。