Measurement of noise events in road traffic streams: initial results from a simulation study

A key question for road traffic noise management is whether prediction of human response to noise, including sleep quality, could be improved over the use of conventional energy equivalent, or percentile, measures, by accounting for noise events in road traffic streams. This paper reports initial results from a noise-events investigation into event-based indicators over an exhaustive set of traffic flow, traffic composition, and propagation distance, conditions in unshielded locations in proximity to roadways. We simulate the time-varying noise level histories at various distances from roadways using a dynamic micro-traffic model and a distribution of sound power levels of individual vehicles. We then develop a comprehensive set of noise event indicators, extrapolated from those suggested in the literature, and use them to count noise events in these simulated time histories. We report the noise-event algorithms that produce realistic, and reliable, counts of noise events for one-hour measurement periods, then reduce redundancy in the indicator set by suggesting a small number of representative event indicators. Later work will report the traffic composition and distance conditions under which noise event measures provide information uncorrelated with conventional road traffic noise indicators — and which thus may prove useful as supplementary indicators to energy-equivalent measures for road traffic noise

Energy production and use in Colorado's High Plains region

February 1982

Confident Girls Pack a Punch!

This project examines the experiences of girls participating in martial arts, in order to shed light on the topic and provide an opportunity for girls to discuss their feelings and experiences. The project focuses on three major questions: Are younger girls gaining confidence and self-esteem from martial arts? Do they recognize these changes? How do they feel about their training in general

Unlikely associates

2009 Spring.Includes bibliographical references.It is my intention in the following written thesis to construct an investigative explanation regarding my own personal work and artistic philosophy. I shall incorporate influences from my own personal experience, 20th century European and American literature, and art history--specifically post-1940 American art. Significantly serious topics such as war, economics, history, death, and academia are investigated through the visual language of sci-fi, cartoons, comics, and zombies. Both arrangements of visual dialogue, the serious and the comedic, contain subject matter that greatly interests me. These function as uncommon idioms, and create an interesting visual as well as a distinctive social commentary. These works occasionally involve well known cultural imagery. My ambition is to show a parallel between the oftentimes historically indicative conceptual nature of the work itself and the sometime seemingly ridiculous or dramatic imagery depicted. I try to create work that provides the signs and clues for a complicated mystery with numerous components