ITS Berkeley

Several studies spanning since the 1970s to the present, considering turbulent flows at realistic conditions for aircraft flight, have amassed evidence on the dominance of a far-field tonal noise, usually associated with vortex-shedding from the trailing edge. Furthermore, the appearance of multiple tones has been documented for increasing values of the angle of attack and Mach number, which exhibit a ladder-like pattern in terms of the variation of the frequencies with increasing free-stream velocity. Different explanations have been suggested for the origin of the (i) single tone, (ii)...

A demonstration of the use of decision analysis to address societal and institutional issues in an Intelligent Transportation System-based paratransit implementation was performed. A decision analysis technique called Multi-Organization Decision Analysis (MODA) was developed, and it is based on the Decision Risk Analysis process used widely in the private sector. Its objective is to facilitate consensus among the disparate public and private sector stakeholders in a decision process. The stakeholders are represented on a decision-making team, and they are supported by a team of...

This dissertation study focused on the structure of self-concept in the sport of tennis. A new scale was designed to assess tennis self-concept across five core tennis skills, an assortment of ancillary skills, fitness, psychological skills, and general tennis. The Tennis Self-Concept Scale II (TSCS II) was tested for construct validity with a sample of 225 college students participating in undergraduate tennis classes. Confirmatory factor analysis was employed to test the internal structure of the TSCS II. A comparison was made between two competing theoretical models of self-concept: A...

Safety and security are important considerations for the transit operator, but few empirical studies exist that measure the effectiveness of measures taken to improve transit safety either on actual crime (or other incident) data or transit passengers’ perceived safety. The current study focuses on the links between transit safety measures implemented in the Ann Arbor, Michigan, area; the visibility of these improvements to transit passengers; and perceived levels of safety. The findings indicate that the characteristics of passengers’ riding patterns, and whether a safety measure...