The relationship between inertial measurement unit-derived ‘force signatures’ and ground reaction forces during cricket pace bowling

Abstract

This study assessed the reliability and validity of segment measured accelerations in comparison to front foot contact (FFC) ground reaction force (GRF) during the delivery stride for cricket pace bowlers. Eleven recreational bowlers completed a 30-delivery bowling spell. Trunk- and tibia-mounted inertial measurement units (IMUs) were used to measure accelerations, converted to force, for comparisons to force plate GRF discrete measures. These measures included peak force, impulse and the continuous force–time curve in the vertical and braking (horizontal) planes. Reliability and validity was determined by intra-class correlation coefficients (ICC), coefficient of variation (CV), Bland–Altman plots, paired sample t-tests, Pearson’s correlation and one-dimensional (1D) statistical parametrical mapping (SPM). All ICC (0.90–0.98) and CV (4.23–7.41%) were acceptable, except for tibia-mounted IMU braking peak force (CV = 12.44%) and impulse (CV = 18.17%) and trunk vertical impulse (CV = 17.93%). Bland–Altman plots revealed wide limits of agreement between discrete IMU force signatures and force plate GRF. The 1D SPM outlined numerous significant (p < 0.01) differences between trunk- and tibia-located IMU-derived measures and force plate GRF traces in vertical and braking (horizontal) planes. The trunk- and tibia-mounted IMUs appeared to not represent the GRF experienced during pace bowling FFC when compared to a gold-standard force plate.     

Instructional design for single information literacy sessions

Abstract

The purpose of this paper is to describe how the Understanding by Design instructional design framework can be applied to design high-quality single-session information literacy instruction. The author describes the Understanding by Design process in detail, noting modifications for single instructional session design with examples from the application of this instructional design process to design co-curricular instruction sessions for undergraduates.     

Strategic Embodiment in Virtual Spaces: Exploring an on-line discussion about sexualities equality in schools

This paper analyses patterns of participation on a voluntary anonymous Web-based discussion forum, open to students and faculty in one UK university, concerning sexualities equality in schools. Analysis revealed that participants often rejected the security of anonymity and strategically embodied themselves and others (as gay, straight, parents, etc.) to provide authority and ethical grounding for certain arguments. These embodied arguments invited engagement and promoted dialogue. We found that while personal embodiments were crucial for meaningful interaction, they also brought the risk of personalizing systematic inequality and fostering a victimization discourse. In the light of this, we argue that both individual and collective perspectives are crucial for promoting sexualities equality in school.     

Courting Apocalypse: Creating a Zombie-Themed Evidence-Based Medicine Game

In 2015, two librarians at the Hardin Library for the Health Sciences at the University of Iowa turned their dreams into a reality and secured funding to build a zombie-themed evidence-based medicine game. The game features a “choose your own adventure” style that takes students through a scenario where a disease outbreak is taking place and a resident is asked to use evidence-based medicine skills to select a screening and diagnostic tool to use on potentially infected patients. Feedback on the game has been positive, and future plans include building additional modules on therapy, harm, and prognosis.     

Gender-Specific Linkages of Affective Social Competence With Peer Relations in Preschool Children

Research Findings: We examined whether affective social competence, or the ability to effectively send and receive emotional signals and to manage one's own emotional experience, contributes to preschool children's peer relations. Forty-two previously unacquainted preschoolers were observed while participating in a week-long playschool. Greater nonstereotypical emotion knowledge was related to girls' popularity and boys' likelihood of having a reciprocal friendship. Girls with greater skill at sending emotional communications and managing emotions were more likely to have a reciprocal friendship. Boys who were better at managing emotions compared to others in their group were less popular. The role of social context in the influence of affective social competence on children's peer relations is discussed. Practice or Policy: Results have implications for early childhood educators' promotion of children's socioemotional skills.     

Exposure to Media Violence and Young Children with and Without Disabilities: Powerful Opportunities for Family-Professional Partnerships

There is growing concern regarding the amount and type of violence that young children are exposed to on a daily basis. Through media, popular toys and video games violent images are consistently present in children’s lives starting at a very young age. This paper discusses (a) the growing presence of young children’s exposure to media violence, (b) the influence of media violence on early childhood development and well-being, (c) the impact of media violence on young children with disabilities, and (d) recommendations for addressing this national dilemma within the context of family-professional partnerships. A list of related web resources is also included.     

Developmentally Appropriate Emergent Literacy Activities for Young Children: Adapting the Early Literacy and Learning Model

Whether it be leaping, resisting, or being gently shoved, the field of early childhood education continues moving into the age of accountability. Young children are expected to exhibit many requisite skills prior to kindergarten. Thus, the advancement of pre-reading and writing skills development become one of the many areas of focus for early childhood teachers. This study focused on the advancement of young children’s emergent literacy and letter recognition skills through developmentally appropriate instruction and need based adapted activities using the Early Literacy and Learning Model (ELLM) curriculum. The results suggest that mindfully adapting activities to children’s needs advances children’s emergent literacy development.     

The role of school psychologists in the assessment,prevention, and intervention of cyberbullying

Many school‐aged children have experienced the cruelty of bullying. The impact and effects of bullying have been described extensively in scholarly literature. Unfortunately, the impact of bullying has also made contemporary headlines with the recent rash of school shootings and other forms of school‐based violence. The current body of students brings an additional threat to bullying. Due to their sophisticated use of technology, today's students are using contemporary delivery systems to taunt, tease, and threaten their classmates. Cyberbullying is the newest form of bullying, and it brings additional challenges for school personnel. Because of the unique aspects of cyberbullying, school psychologists need strategies to guide school communities faced with this threatening behavior. © 2008 Wiley Periodicals, Inc.