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Articles 1 - 4 of 4
Full-Text Articles in Architecture
Subjective Perception Of Varying Reflection Densities In Room Impulse Responses, Hyun Hong
Subjective Perception Of Varying Reflection Densities In Room Impulse Responses, Hyun Hong
Durham School of Architectural Engineering and Construction: Dissertations, Thesis, and Student Research
Reverberation time (RT) is a metric commonly used to describe room acoustic conditions, but different rooms which have the same reverberation time can have different reflection densities. Much less is known about how humans perceive different reflection densities and how sensitive humans are to changes in reflection density. Previous investigations in the existing literature have studied the upper limit of distinguishable reflection density using artificial impulse responses, but not with more realistic impulse responses simulated in room acoustic software or measured from real rooms. The aim of this dissertation is to investigate methods for quantifying reflection density from measured impulse …
A Guide For Planning A Bike Share System At The University Of Nebraska-Lincoln, Wade M. Schuldt
A Guide For Planning A Bike Share System At The University Of Nebraska-Lincoln, Wade M. Schuldt
Community and Regional Planning Program: Theses and Student Projects
The purpose of this document is to serve as a framework for planning a bicycle share system at the University of Nebraska-Lincoln, with the possible inclusion of the City of Lincoln, Nebraska, in the system. This document provides a background review of the evolution of bike share systems and the recent rapid growth of these systems around the world. The document describes planning methodologies used in other locations and the lessons learned from the bike share systems around the world, as to what processes should be pursued to implement a successful bike share system. With the University of Nebraska-Lincoln move …
Assessing Gait And Postural Stability Of Construction Workers Using Wearable Wireless Sensor Networks, Houtan Jebelli
Assessing Gait And Postural Stability Of Construction Workers Using Wearable Wireless Sensor Networks, Houtan Jebelli
Department of Construction Engineering and Management: Dissertations, Theses, and Student Research
Falling accidents are a leading cause of fatal and nonfatal injuries in the construction industry. This fact demonstrates the need for a comprehensive fall-risk analysis that incorporates the effects of construction workers’ physiological characteristics. In this context, the objective of the thesis is to investigate and validate the usefulness of the gait- and postural-stability metrics in assessing construction workers’ fall risks. Diverse metrics that assess the capability to keep the body balanced and maintain coordination of body segments during locomotion (gait stability) and stationary postures (postural stability) have been introduced and used in clinical applications. However, their usefulness in the …
Accounting For The Short Term Substitution Effects Of Walking And Cycling In Sustainable Transportation, Daniel P. Piatkowski, Kevin J. Krizek, Susan L. Handy
Accounting For The Short Term Substitution Effects Of Walking And Cycling In Sustainable Transportation, Daniel P. Piatkowski, Kevin J. Krizek, Susan L. Handy
Community and Regional Planning Program: Faculty Scholarly and Creative Activity
The environmental benefits of bicycling and walking depend on the degree to which their use substitutes for car driving. Assuming that every walking and bicycling trip replaces a driving trip is likely to produce overestimates of the potential for such modes to reduce vehicle travel and city-scale greenhouse gas emissions. Measuring this ‘‘substitution effect’’ is not straightforward. There are many dimensions of the substitution effect, including trip type, substituting mode, extent, time horizon, and activity patterns. Previously used approaches to measure substitution include indirect inference and direct questioning. This study piloted an intercept survey using the direct questioning approach at …