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Full-Text Articles in Engineering
Estimating Vehicles Emissions At Signalized Intersections In The Highway Capacity Manual, Yuanyuan Fan
Estimating Vehicles Emissions At Signalized Intersections In The Highway Capacity Manual, Yuanyuan Fan
Dissertations
Over the past decades, motor vehicle volumes have continued to increase at a high rate. As a result, engineers in the transportation field not only need more robust knowledge of traffic operation control and transportation planning, but more attention is also needed to understand and estimate the influences that this increasing volume of vehicles has on the environment, especially the influence on air quality. The EPA has stated that reducing carbon monoxide (CO) from vehicle emissions is the most significant way to control air pollution from the transportation sector.
The Highway Capacity Manual is a national and international resource that …
Pltw Female High-School Students' Supports And Barriers In Choosing A College Degree, Lisa Lubin Rubin
Pltw Female High-School Students' Supports And Barriers In Choosing A College Degree, Lisa Lubin Rubin
Dissertations
Purpose:The purpose of this mixed-methods research study is to identify and describe the barriers and supports that PLTW female students encounter when pursuing a non-traditional female STEM degree upon graduation from high school.
Methodology:A mixed-method (qualitative-quantitative) research design was chosen for this study to explore barriers and supports of female high-school seniors in PLTW. The qualitative portion of the study was phenomenology. This study explored the supports and barriers of female high-school seniors in PLTW courses when choosing a college degree. The quantitative portion of the study was conducted via a hard-copy survey containing closed-ended five-point Likert scale …