Characterizing the mechanical parameters of forward and backward falls as experienced in snowboarding

Wrist injuries are frequently observed after falls in snowboarding. In this study, laboratory experiments mimicking forward and backward falls were analysed. In six different falling scenarios, participants self-initiated falls from a static initial position. Eighteen volunteers conducted a total of 741 trials. Measurements were taken for basic parameters describing the kinematics as well as the biomechanical loading during impact, such as impact force, impact acceleration, and velocity. The effective mass affecting the wrist in a fall also was determined. The elbow angle at impact showed a more extended arm in backward falls compared to forward falls, whereas the wrist angle at impact remained similar in forward and backward falls. The study results suggest a new performance standard for wrist guards, indicating the following parameters to characterize an impact: an effective mass acting on one wrist of 3-5 kg, an impact angle of 75 degrees of the forearm relative to the ground, and an impact velocity of 3 m/s.     

Response to intervention as a vehicle for distinguishing between children with and without reading disabilities: Evidence for the role of kindergarten and first-grade interventions

Children at risk for early reading difficulties were identified on entry into kindergarten, and half of these children received small-group intervention two to three times a week during their kindergarten year. The other half received whatever remedial assistance was offered by their home schools. These children were again assessed at the beginning of first grade, and those who continued to have difficulties in reading received either one-to-one daily tutoring offered by project teachers from the beginning to the end of first grade or whatever remedial assistance was offered by their home schools over the same time period. All target children were periodically assessed through the end of third grade. Results suggest that either kindergarten intervention alone or kindergarten intervention combined with first-grade intervention are both useful vehicles for preventing early and long-term reading difficulties in most at-risk children.     

Assumptions underlying performance‐based budgeting

Abstract

Interest in ‘performance budgeting’ is growing despite a lack of research on its effectiveness. U.S. states have largely used ‘incremental’ and ‘formula’ budgeting processes to fund higher education. However, more than half of them are experimenting with some form of ‘performance budgeting’. There have been similar attempts to reform budget practices in the U.S. in the past, but most of these processes have been largely abandoned. Governmental ‘performance budgeting’ for higher education assumes policy objectives are stable, complex decisions on budget trade‐offs can be made at governmental levels on the basis of data, institutions operate as bureaucracies, resources can be linked to outcomes, outcomes are identifiable and can be agreed upon, accountability can be achieved through budget policies, and current practices create incentives to enrol unqualified students. These assumptions are not realistic. Consequently, ‘performance budgeting’ will not meet proponents expectations and will suffer the fate of past budget fads.     

Examining the Double-Deficit Hypothesis in an Orthographically Consistent Language

As many of you know, this is my final issue as editor of Scientific Studies of Reading. The new editor, Charles Hulme, has the work well in hand and has actually completed the editing of two articles which appeared in Issue 3 of this volume. The journal will be in good hands. I want to thank the many board members, reviewers, and authors for their energy, talents, and enthusiasm in the cause of advancing the journal. It's been a great privilege to be able to work with you and to guide the journal for 5 years. The current issue is a special issue, which had its inception in an idea of Mike Pressley's to have authors assess the present and future of key areas of literacy research. The first three articles in this issue are part of the special issue. The fourth article is a rewritten version of Charles Perfetti's Distinguished Scientific Contribution presentation at the July 2006 SSSR meeting. I append comments about Mike Pressley, written by Joanna Williams, who appropriately was the first editor of Scientific Studies of Reading and who had a hand in this special issue.     

Relationships Among Cortical Thickness,Reading Skill,and Print Exposure in Adults

This study investigated relationships among cortical thickness in the left-hemisphere reading network, and reading skill and experience in adult nonimpaired readers. Given the relationship between print exposure and reading, it is possible that print exposure is related to cortical structure. The pattern of correlations indicated that individuals with higher print exposure had better reading skills and thicker cortices. Furthermore, print exposure accounted for unique variance in cortical thickness in part of the left-hemisphere reading network after accounting for reading skill. This suggests that some of the variation in cortical thickness in adults might be attributable to reading experience, independently of reading skill.     

Training to Improve New Product Sales Performance: The Case of Samsung in China

The authors report a case study conducted with over 8,000 Samsung salespeople in the Chinese market. Using research‐oriented, evidence‐based, and systematic approaches, training professionals contributed to Samsung's business outcomes at multiple levels. The case highlights the valuable impacts of training on salespeople's behaviors and new product sales performance and provides meaningful implications for trainers as they strive to be relevant to their business partners.