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Thesis (M.S.)--California Polytechnic State University, 2009. / Title from PDF title page; viewed on March 11, 2009. "February 2009." "In partial fulfillment of the requirements for the degree [of] Master of Science in Mechanical Engineering." "Presented to the faculty of California Polytechnic State University, San Luis Obispo." Major professor: Tom Mase, Ph.D. Includes bibliographical references (p. 102-103). Also available on microfiche.

Thesis (M.S. in mechanical engineering)--Washington State University. / Includes bibliographical references.

Thesis (Ph. D.)--Lehigh University, 2004. / Includes vita. Includes bibliographical references (leaves 119-122).

Inaug.-Diss.--Rostock. / Lebenslauf. Includes bibliographical references.

Thesis (M.S. in mechanical engineering)--Washington State University, August 2010. / Title from PDF title page (viewed on July 30, 2010). "Department of Mechanical and Materials Engineering." Includes bibliographical references (p. 105-108).

Thesis (M.S.)--Virginia Polytechnic Institute and State University, 1986. / Vita. Abstract. Includes bibliographical references (leaves 107-112). Also available via the Internet.

The purpose of this study was to determine how predicting ability in a ball catching task changes with age, and, to explore the predicting abilities of children with the developmental coordination disorder (DCD). / There were 157 children between the ages of 5 and 12 participating in the first portion of the study. Of these children, 46 were 5 to 7 years of age and served as controls, in the second portion of the study, for 40 5 to 7-year old children with DCD. / Predicting ability was tested by having the children watch a video of a boy throwing a ball to three locations around them. Each location was seen at four different viewing times for a total of 60 trials. / Results for both ANOVAs revealed that as more visual information became available, predictions were more accurate. It was also evident that at the early viewing times younger children did not predict ball flight as well as older groups. Similarly, children with DCD predicted more poorly at most viewing times compared to their non-DCD peers. / Similar results were found for gender in the analysis comparing DCD and non-DCD children. At the early time periods males predict more effectively than females. / Thus the data point to the instances where experience is a crucial factor in predicting ball flight.

Despite anecdotal evidence of changes to tennis ball characteristics and play properties, little research has been directed towards understanding the causes and effects of tennis ball degradation. Improved racket technology and player fitness have contributed to an increase in the speed of the game, yet balls have seen few advancements over the same period. There are several obvious factors contributing to tennis ball degradation: natural pressure loss in pressurised balls, changes to the cloth covering due to court and racket impacts, and precipitation and environmental factors. As recent tennis research has focused on the new balls, there is a need to investigate other ball conditions present in the game of tennis. This thesis provides a structured investigation into the causes and effects of ball degradation, an objective assessment of the effects of degradation on ball performance, and incorporates subjective perceptions of all aesthetics and play properties noted by players. Particular attention is given to ball fuzziness. Excessive fuzziness can occur from manufacturing variability, court and racket interactions, and environmental conditions - though there is currently no standardised method to assess ball surface condition. An objective measure of ball fuzziness has been developed and used in the analysis of nearly 4000 individual ball images. The effects of court and racket impacts, precipitation, natural pressure loss, and repeated impacts have been analysed for their effects on ball degradation. An assessment of ball performance utilised ball impact and aerodynamic data to determine significant differences between balls and develop an improved ball trajectory model.

Thesis (M.S.)--Springfield College, 2003. / Includes bibliographical references (leaves 107-111).