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Social and Behavioral Sciences Commons™
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Articles 1 - 11 of 11
Full-Text Articles in Social and Behavioral Sciences
Cracking Susceptibility Of Concrete Made With Recycled Concrete Aggregate, O. Burkan Isgor, Jason Ideker, Tengfei Fu, Matthew P. Adams
Cracking Susceptibility Of Concrete Made With Recycled Concrete Aggregate, O. Burkan Isgor, Jason Ideker, Tengfei Fu, Matthew P. Adams
TREC Final Reports
As high-quality, local, natural aggregate resources continue to become less available, and the cost of landfilling waste material rises, the need for alternative aggregates and recycling of waste material will increase. Using RCA in fresh concrete is one way to address both of these issues. However, there has long been a concern that RCA may negatively affect the properties of new concrete in which it is included. The results of the present investigation, however, indicate that the use of RCA in new concrete may not produce higher levels of free drying shrinkage as previously believed. Actually, these results show that …
From Transit Stop To Urbanity Node: Field Audit For Measuring Livability At The Transit Stop, Deni Ruggeri
From Transit Stop To Urbanity Node: Field Audit For Measuring Livability At The Transit Stop, Deni Ruggeri
TREC Final Reports
This research proposal addresses issues of livability at the transit stop. American transit systems have historically been “shoehorned” into existing street networks designed predominantly for cars and trucks. While much research exists on livability and walkability in the context of urban and suburban streets and blocks, bus stops are greatly understudied. This research focused on bus stops and aimed at analyzing their performance in terms of livability, with particular emphasis on perceptions. Our definition of livability was expanded to include considerations of safety and maintenance, cleanliness, imageability and vitality, which have been shown to affect people’s perceptions of livability and …
Durability Assessment Of Recycled Concrete Aggregates For Use In New Concrete: Phase I - Revised, Jason H. Ideker, Matthew P. Adams, Jennifer Tanner, Angela Jones
Durability Assessment Of Recycled Concrete Aggregates For Use In New Concrete: Phase I - Revised, Jason H. Ideker, Matthew P. Adams, Jennifer Tanner, Angela Jones
TREC Final Reports
The primary goal of this research project was to investigate the long-term durability of concrete incorporating recycled concrete aggregate (RCA) through accelerated laboratory testing. Overall it was found that modifications to standard aggregate testing and characterization standards were necessary for testing RCA. This included modifications to standard tests including ASTM C 128, C 305 and C 1260. It was found that the potential for alkalisilica reactivity did exist for new concrete containing RCA. The characteristics of the RCA also had a profound effect on ASR related expansion. RCA with a higher content of reactive coarse or fine aggregate (compared to …
Modeling Of Dc Link Capacitor Current Ripple For Electric Vehicle Traction Converter, Lei Jin, Julia Zhang
Modeling Of Dc Link Capacitor Current Ripple For Electric Vehicle Traction Converter, Lei Jin, Julia Zhang
TREC Final Reports
Contemporary Full Hybrid Electric Vehicle/Plug-in Hybrid Electric Vehicle/Battery Electric Vehicle (FHEV/PHEV/BEV) products use one or more DC/AC power converters, also known as traction inverters, to convert the DC voltage/current provided by the traction battery to the AC voltage/current to drive the traction motor(s). Large and bulky DC link capacitors are used at the input of the traction inverter to provide a smooth DC input voltage. Those DC link capacitors, occupying almost 50% of the space in the whole package, can contribute to more than 20% of the total cost of the traction inverter. They are generally over designed to assure …
Overlooked Destinations: Suburban Nodes, Centers, And Trips To Strips, Nico Larco, Robert Parker
Overlooked Destinations: Suburban Nodes, Centers, And Trips To Strips, Nico Larco, Robert Parker
TREC Final Reports
This study looks at travel to typical suburban commercial strips by residents living within one-third of a mile of the strip by focusing on six sites – four in the Portland, OR., metro area and two in the Atlanta, GA., metro area. The study mapped pedsheds around the commercial strips in these sites and found significant increases in network extents when formal and informal pedestrian paths were added to street centerline data. Informal networks such as goat paths through vacant land and cuts in fences were widespread and suggest a pent-up demand for route directness. Travel surveys of residents found …
Relocation Of Homeless People From Odot Rights-Of-Way, Ellen M. Bassett, Andrée Tremoulet, Allison Moe
Relocation Of Homeless People From Odot Rights-Of-Way, Ellen M. Bassett, Andrée Tremoulet, Allison Moe
TREC Final Reports
This research project consists of an investigation of responses to homeless encampments on rights-of-way owned by Departments of Transportation (DOTs). While DOTs are not housing or social service agencies, their role as major public landowners involves them in dealing with the consequences of homelessness. The research goals included analyzing the prevalence of the problem, documenting how DOTs are responding, and culling from this data information that could be used as a basis for creating a best practices guide. The research included a single mixed-methods, in-depth case study, electronic surveys of practitioners and follow-up interviews. Products consist of two reports (included …
Improved Pedestrian Safety At Signalized Intersections Operating The Flashing Yellow Arrow, David Hurwitz, Christopher M. Monsere
Improved Pedestrian Safety At Signalized Intersections Operating The Flashing Yellow Arrow, David Hurwitz, Christopher M. Monsere
TREC Final Reports
In some jurisdictions, protected left-turn phasing has been replaced with the flashing yellow arrow (FYA) for protected/permissive left turns (PPLTs) to reduce delay. However, it is important to have a thorough understanding of the conflict between pedestrians and the permissive left-turning vehicle. This presentation summarizes the results of research conducted with a high-fidelity, motion-based driving simulator and mobile eye-tracking equipment to study the effects of the opposing traffic, the presence and walking direction of pedestrians, and the number of section heads to display the FYA on driver performance. To accomplish this research, a six-intersection simulated environment was created. In total, …
Development, Deployment, And Assessment Of A New Educational Paradigm For Transportation Professionals And University Students, Christopher M. Monsere
Development, Deployment, And Assessment Of A New Educational Paradigm For Transportation Professionals And University Students, Christopher M. Monsere
TREC Final Reports
Traditionally, engineering coursework has been delivered in a lecture-based format with accompanying exercises assigned for time outside of class. The activity-based approach to learning aims to keep students engaged in and responsible for their own learning processes. This approach has been shown to be more effective than conventional teaching approaches in terms of long-term retention of the educational material.
Developing An Oregon Access Management Best Practices Manual, Karen Dixon, Xiang Yi, Lacy Brown, Robert Layton
Developing An Oregon Access Management Best Practices Manual, Karen Dixon, Xiang Yi, Lacy Brown, Robert Layton
TREC Final Reports
This report reviews an Oregon research effort to develop an Oregon Access Management Best Practices Manual. In particular, this research effort develops a resource to help transportation professionals quantify safety and operational effects of various access management strategies, provide measurable criteria to evaluate these access management techniques, and identify data collection practices necessary to successfully perform these assessments. It is the expectation that this manual can be used by engineers, decision makers, and educators to help the transportation community better understand the appropriate application of access management strategies and how to quantify benefits of the various access management options. This …
Development Of Mobile Mapping Technology To Facilitate Dialogue Between Transportation Agencies And The Public, Ken Kato, Marc Schlossberg, James Meacham
Development Of Mobile Mapping Technology To Facilitate Dialogue Between Transportation Agencies And The Public, Ken Kato, Marc Schlossberg, James Meacham
TREC Final Reports
The goal of this grant was to take the technological innovations for deploying survey instruments to mobile phones, developed under a previous OTREC grant, and publish them as globally accessible mobile applications (apps) for use in a variety of transportation planning settings. Under this grant, three applications have been developed for three distinctly different user groups. The first, JLA Involve, was developed and deployed for JLA, a Portland, OR.-based public involvement firm, to support their work with the City of Tualatin, OR., in updating their Transportation System Plan (TSP). The second was developed and deployed for the City of Eugene, …
Enhancing Bicycle And Pedestrian Education Through Curriculum And Faculty Development, Lynn Weigand
Enhancing Bicycle And Pedestrian Education Through Curriculum And Faculty Development, Lynn Weigand
TREC Final Reports
This project was intended to provide relevant curriculum on bicycle and pedestrian transportation that can be used by planning and engineering faculty to integrate these topics into their course offerings. We developed a module-based curriculum for bicycle and pedestrian planning and design that is current, relevant to practice, and adaptable for use in a variety of course offerings in engineering and planning departments. We also procured 33 new publications for the Millar Library to support coursework on this topic. In addition, a proposal to pilot a faculty development workshop was funded, allowing us to provide training and resources to transportation …