Measurement Errors in Modified Pull-Ups Testing

In a review of 46 meta-analyses of gender differences, overhand throwing had the largest gender difference favoring boys (ES > 3.0). Expectations for gender-specific performances may be less pronounced in female Australian Aborigines, because historical accounts state they threw for defense and hunting. Overhand throwing velocities and kinematics were recorded in 30 female and male Aboriginal Australian children 6-10 years old. Results indicated the Aboriginal girls and boys were more similar in horizontal ball velocities than U.S. girls and boys. Throwing kinematics between girls and boys were also more similar in Australian Aborigines than U.S. children. Aboriginal girls threw with greater velocities than U.S., German, Japanese, and Thai girls, while the boys were similar across cultures.     

Techniques and considerations for determining isoinertial upper‐body power

Power is an integral aspect of many sports. Although power output of the lower body is often measured during jumping and cycling movements, much less is known about power as pertains to the upper body musculature. Recently, isoinertial methods ‐ with constant gravitational load ‐ of power testing have become common, but little is known of the reliability and criterion validity of these tests as they pertain to sport performance. In addition, the varied methodology makes a lucid model more evasive. The aims of this review are to examine the various methods of assessing upper body power, to establish its role in predicting athletic performance, and to assess the body of literature that has assessed power output of the upper extremities by isoinertial methods. To our knowledge, only two studies on isoinertial upper‐body power have shown a direct correlation to sporting ability (Baker, 2001; Baker et al., 2001); therefore, many unanswered questions exist as to the efficacy of these tests as predictors of athletic ability or as a method to track athletes’ training over time. From this review we hope to allow the sport coach to assess the overall utility of these tests in terms of availability, safety and external validity.     

新积分微分方程组的可积类型

提出四类积分微分方程组，借助函数迭代法及变上限函数的求导法则，论证其可积性，前三个定理给出求解公式，列举了实例。     

关于自相似集的一个公开问题

研究了一类自相似集ERn,它具有最好几乎处处最好覆盖,而集合{r∈(0,1)∶■x∈E,■sC(E,x)=r}和集合{x∈E∶■sC(E,x)<1}的基数分别是1和可数基数(即自然数集合的基数),从而在一定条件下初步回答了Zuoling Zhou和Feng Li提出的一个公开问题.     

“A bad head for maths”? Constructions of Educability and Mathematics in Adult Students' Narrative Life Histories

The article focuses on the social differences of educability constructed in Finnish general upper secondary school adult graduates' narratives on mathematics. Social class, gender, and age intertwine in the narratives that express the adult students' worries about their ability and competence to study and learn mathematics. Social differences of educability are transformed into individual conceptions of ability in an intrusive way that has consequences far beyond the ability to learn mathematics. This concerns such issues as whether one's ability and competence as a student and learner suffice to complete studies at GUSSA1 ¹The general upper secondary school for adults—GUSSA for short in this text—is an institute that provides formal general education for adults of all ages. For students the schooling is free of charge, except for subject studies, and entrance is not limited by strict age requirements as the age limit of 18 can be lowered under special circumstances. GUSSA students can either aim at the general upper secondary school certificate and/or passing the matriculation examination, that is the school leaving exam of Finnish upper secondary school, or take courses in individual subjects. Today there are approximately 50 institutes specializing in general upper secondary education for adults in over 40 municipalities in Finland. In 2008 over 10,000 GUSSA students were pursuing general upper secondary qualifications and about 6% of the matriculation examinations were taken and passed by GUSSA students (Statistics of Finland, 2008 Statistics of Finland. 2008. Perusasteen jälkeisen tutkintotavoitteisen koulutuksen opiskelijat ja tutkinnot koulutusmaakunnan, koulutuslajin ja opintoalan (opetushallinnon luokitus) mukaan [Students and qualifications of postcompulsory formal education based on school location, type of education and branch of education (National Board of Education classification). Retrieved June 19, 2010, from http://pxweb2.stat.fi/Dialog/varval.asp?ma=260_opiskt_tau_102_fi&;path=../database/StatFin/kou/opiskt/&;lang=3&;multilang=fi  [Google Scholar]). Besides this, there is an increasing number of students taking individual courses in some subjects. For more information see The Finnish National Board of Education (2008 Finnish National Board of Education (2008). General upper secondary education. Retrieved February 5, 2008, from http://www.oph.fi/english/education/general_upper_secondary_education  [Google Scholar]). and pass the matriculation examination, as well as one's chances of succeeding in further studies and working life. The study confirms that mathematics continues to be constructed as a masculine prototype of intelligence. Being “good” at mathematics, moreover, implies having intelligence and innate natural talent.     

Practical Work in Earth Sciences Education: An experience with students in the context of a National Science Programme in Portugal

The programme Ciencia Viva of the Portuguese Ministry of Science and Technology aims to create a greater understanding of science and science education amongst scientists, teachers, school children and the general public, each of whom is encouraged to cooperate and interact through regular contacts. The purpose is to improve practical, experimental and other forms of investigative work. To accomplish such work in schools, an overview of the state of science education worldwide is presented in terms of old and new traditions of the teaching of the physical and historical sciences the latter including the teaching of fieldwork. Traditional practices are compared with those established recently in various parts of the world in which more carefully considered understanding of the nature of science and science education has been established. In illustration of good practice, an outline is offered of the nature and rationale of two sets of curricular materials. These were designed by a team comprising staff members of the University of Aveiro and secondary school teachers and were trialled in schools. These activities are concerned with the internal rock cycle and the internal energy of the Earth in relation to plate tectonic theory. They are also related to the processes of weathering, erosion, transportation and deposition of sedimentary rocks and structures (like wave and current ripple marks) which were formed as part of the external rock cycle driven by the Sun's energy. The account concludes with an outline of the sub programme 'Geology in Summer', a fieldwork programme which introduces a holistic understanding of the workings of the outer part of the Earth to the general public. Students' perspectives and teachers' views about these experiences are generally very positive and are presented at the end. The whole programme was evaluated by an international team of scientists and science educators.     

Defining curriculum policy through slogans

This article explores the upper secondary (or post‐16) school market. The study on which it is based, funded by the Swedish Research Council, was entitled ‘Upper‐secondary education as a market’. Empirical data include official statistics, policy documents, school publications, company reports and school visits. Printed and other news media were also scrutinised to identify how the marketisation of education is represented in public discourse. A number of themes emerged from the study which included mapping the expansion of the school market, chains of ownership and influence, marketing strategies, choice and the school market and issues raised in the media. These imply that there is a new market discourse which represents a clear break with previous social democratic education policies primarily aimed at enhancing citizenship and wider democratic values within an inclusive public school. However, critiques have also emerged including a call for strengthened regulations of and control over independent schools and concern about an education market equated more with shares and profits rather than pedagogy and student citizenship.     

夹逼准则与抛物型偏微分方程的上下解方法

文章把极限的夹逼准则思想应用到抛物型偏微分方程,通过引进上下解,构造出一串单调非增的上解序列和一串单调非减的下解序列,证明了半线性抛物型偏微分方程初边值问题解存在的唯一性。     

震后岷江上游地区生态旅游开发的SWOT分析

通过采用SWOT法分析岷江上游地区生态旅游业开发的优势、劣势、机会和挑战,从而提出适宜的生态旅游业开发对策,更好地利用旅游资源,实现产业结构的优化升级,以促进灾后重建工作中生态旅游业的发展。