The influence of gravimetric moisture content on studded shoe–surface interactions in soccer

It is desirable for the studs of a soccer shoe to penetrate the sport surface and provide the player with sufficient traction when accelerating. Mechanical tests are often used to measure the traction of shoe–surface combinations. Mechanical testing offers a repeatable measure of shoe–surface traction, eliminating the inherent uncertainties that exist when human participant testing is employed, and are hence used to directly compare the performance of shoe–surface combinations. However, the influence specific surface characteristics has on traction is often overlooked. Examining the influence of surface characteristics on mechanical test results improves the understanding of the traction mechanisms at the shoe–surface interface. This allows footwear developers to make informed decisions on the design of studded outsoles. The aim of this paper is to understand the effect gravimetric moisture content has on the tribological mechanisms at play during stud–surface interaction. This study investigates the relationships between: the gravimetric moisture content of a natural sand-based soccer surface; surface stiffness measured via a bespoke impact test device; and surface traction measured via a bespoke mechanical test device. Regression analysis revealed that surface stiffness decreases linearly with increased gravimetric moisture content (p = 0.04). Traction was found to initially increase and then decrease with gravimetric moisture content. It was observed that: a surface of low moisture content provides low stud penetration and therefore reduced traction; a surface of high moisture content provides high stud penetration but also reduced traction due to a lubricating effect; and surfaces with moisture content in between the two extremes provide increased traction. In this study a standard commercially available stud was used and other studs may provide slightly different results. The results provide insight into the traction mechanisms at the stud–surface interface which are described in the paper. The variation between traction measurements shows the influence gravimetric moisture content will have on player performance. This highlights the requirement to understand surface conditions prior to making comparative shoe–surface traction studies and the importance of using a studded outsole that is appropriate to the surface condition during play.     

Strong on retention,weak on outcomes: the impact of vocational education and training in schools

The re-shaping of the Australian senior secondary landscape in recent years and the emergence of a new space for vocational knowledge within Australian senior secondary certificates of education have been underpinned by a national focus on raising retention rates and achieving Year 12 or equivalent attainment rates in the context of a diversifying senior secondary cohort, and on delivering effective training to meet the skills needs of the growing economy. Absent from this policy agenda is a focus on the efficacy of the expanding vocational education and training (VET) in Schools. At the core of this discussion are the impacts of ongoing tensions between the instrumentalist labour market role of VET in Schools programmes and the expectation that an equitable senior secondary landscape should respond to the education and training needs of all students. Despite rapid growth, low achievers and socioeconomically disadvantaged learners remain the dominant participants in VET in Schools programmes, and pathways for these students into post-school education and training or full-time employment remain weak. This paper draws on the views of students, teachers, and policy-makers to examine the ways in which vocational programmes are delivered within the different curricular contexts of VET in Schools across Australian senior secondary education systems.     

The mediating role of mindfulness on stress and counseling self-efficacy

The authors explored how mindfulness influenced the relationship between perceived stress and counseling self-efficacy (CSE) among 187 counseling students. Results suggest mindfulness mediated the relationship, diminishing the negative impact of stress on CSE. Implications address how counselor educators can promote mindfulness as an avenue to enhance counselor development by increasing CSE and reducing stress in counseling students.     

Communication aids in the classroom: the views of education staff and speech and language therapists involved with the Communication Aids Project

The findings presented in this paper are part of an independent evaluation study of the Communication Aids Project (CAP). The study was carried out between July 2003 and April 2004 and looked at the impact of CAP on children receiving communication aids and evaluated the CAP strategy of assessment and delivery. In this paper the views of education staff and speech and language therapists who were working with communication aid users in school are presented. The professionals who were interviewed provided positive feedback on the existence of CAP, on the assessment for the communication aid, particularly where the use of the aid in the classroom was considered, and on the children's increased participation in classroom and learning activities since receiving the aid. They also highlighted the issue of managing parents' expectations regarding the use of aids and the value of and need for continued training for professionals working with communication aids in the classroom. The authors of this article, Jannet Wright, senior lecturer, Chris Donlan, senior lecturer, Caroline Newton, lecturer, and Michael Clarke, lecturer, from University College London; Claire Lister, from the Institute of Child Health, London; and Jasmina Cherguit, assistant psychologist, draw upon their findings to develop recommendations for future policy, practice and professional development.     

News or Noise? An Analysis of U.S. News and World Report's Ranking Scores

One of the biggest criticisms of the U.S. News and World Report rankings of colleges and graduate schools is that they are "falsely precise,' creating a vertical column where a group might more properly exist. In this article, the jackknife method coupled with a linear regression model is used to illustrate uncertainty around the overall scores used to rank schools. Results indicate that the top 50 schools in each ranking can be shown to group in two to three bands. The implications of these findings are discussed in terms of the interpretation of a school's position in a ranking as well a s changes in that position over time. The article concludes with some recommenda- tions for both producers and consumers of these rankings.