Digital Commons Network^™

U.S. Population Change: The Roles Of Amenities And Transportation, Xuan Zhou

Theses and Dissertations

Studying the spatial distribution and redistribution of population has long been a major concern of demography, because population changes can reflect deep and massive social changes. For decades, the major population change was the moving of people from rural to urban regions. However, with the advancement of transportation and information technology, many new regions have become more attractive to people, such as small and new metropolitan, nonmetropolitan, suburban, and rural areas. Traditional migration and population redistribution studies emphasize economic and social factors. Relatively little attention is paid to how natural amenities and transportation affect changes of population size and net …

Urban Ecology & Conservation Symposium 2016: 14th Annual (Abstracts), Urban Ecosystem Research Consortium Of Portland/Vancouver

Urban Ecosystem Research Consortium of Portland/Vancouver

The UERC is a consortium of people from various universities and colleges, state and federal agencies, local governments, non-profit organizations and independent professionals interested in supporting urban ecosystem research and creating an information-sharing network of people that collect and use ecological data in the Portland/Vancouver area.

UERC Mission Statement:

To advance the state of the science of urban ecosystems and improve our understanding of them, with a focus on the Portland/Vancouver metropolitan region, by fostering communication and collaboration among researchers, managers and citizens at academic institutions, public agencies, local governments, non-profit organizations, and other interested groups.

The principal organizers span …

The Association Between Graduated Driver Licensing Laws And Travel Behaviors Among Adolescents: An Analysis Of Us National Household Travel Surveys, Motao Zhu, Peter Cummings, Songzhu Zhao, Thomas Rice

Faculty & Staff Scholarship

Background: Young novice drivers have crash rates higher than any other age group. To address this problem, graduated driver licensing (GDL) laws have been implemented in the United States to require an extended learner permit phase, and create night time driving or passenger restrictions for adolescent drivers. GDL allows adolescents to gain experience driving under low-risk conditions with the aim of reducing crashes. The restricted driving might increase riding with parents or on buses, which might be safer, or walking or biking, which might be more dangerous. We examined whether GDL increases non-driver travels, and whether it reduces total travels …