Is outcome related to movement variability in golf?

The aim of this study was to develop a method to quantify movement variability in the backswing and downswing phase of the golf swing and statistically assess whether there was any relationship between movement variability and outcome variability. Sixteen highly skilled golfers each performed 10 swings wearing retro-reflective markers which were tracked by a three-dimensional (3D) motion analysis system operating at 400 Hz. Ball launch conditions were captured using a launch monitor. Performance variability was calculated for each body marker based on a scalene ellipsoid volume concept which produced a score representative of the 3D variability over the 10 trials. Outcome variability was quantified as the coefficient of variation of ball velocity for the 10 trials. The statistical analysis revealed no significant correlations between performance variability for each marker trajectory and outcome variability. Performance variability in the backswing or downswing was not related to ball velocity variability. It was postulated that individual players used their own strategies in order to control their performance variability, such that it had no effect on outcome variability.     

Collection Assessment of Monograph Purchases at the University of Nevada,Las Vegas Libraries

The purpose of this article is to describe an assessment project of the monograph collection at the University of Nevada, Las Vegas (UNLV) Lied Library. The circulation statistics and in-house use of all monographs for the nine colleges at UNLV were assessed analyzing the last five years of data. The analysis included an assessment of the circulation statistics and in-house use of books purchased on an approval plan compared with books purchased by individual liaison librarians. The findings illustrated the fact that overall use of the monograph collection has declined over the past five years. The findings also showed that books purchased on an approval plan had slightly higher use than the books purchased by individual liaisons. The study shows that academic libraries need to monitor usage of the monograph collection to be certain that money is spent in the most efficient manner and that usage data can be helpful if there is a need to reduce budget allocations for monographs or if a reallocation of funds for monographs is necessary.     

Broadcasting

Jack Lyle's The People Look at Public Television: 1974 (Washington: Corporation for Public Broadcasting, 1975—$1.00, paper)

Ken Coleman's So You Want to be a Sportscaster (New York: Hawthron Books, 1973—$5.95)

Joseph Fletcher Littell (ed.) Coping with Television (Evanston, Ill.: McDougal, Littell, 1973— cost not given, paper)

Joseph Julian's This Was Radio: A Personal Memoir (New York: Viking, 1975—$8.85)

Dick Cavett and Christopher Porterfield's Cavett (New York: Harcourt, Brace Jevanovich, 1974—$8.95)