Sustainability

Optimizing Dynamics of Integrated Food–Energy–Water Systems Under the Risk of Climate Change

Memarzadeh, Milad
Scott Moura
Horvath, Arpad
2019

Integrated management of food–energy–water systems (FEWS) requires a unified, flexible and reproducible approach to incorporate the interdependence between sectors, and include the risk of non-stationary environmental variations due to climate change. Most of the recently developed methods in the literature fall short of one or more aspects in such integration. In this article, we propose a novel approach based upon fundamentals of decision theory and reinforcement learning that (1) quantifies and propagates uncertainty, (2) incorporates resource interdependence, (3) includes the impact of...

Multimodal Strategies for Mitigating Congestion from Urban Parcel Delivery

Mark Hansen
Joan Walker
Lin, Pei-Sung
Wang, Zhenyu
Zhang, Yu
2024

The explosive growth in e-commerce, the increasing urgency of de-carbonization, the rapid advances in UAV technology, and the continuous disruptive development of the gig economy create needs and opportunities for dramatic improvements in urban package delivery. E-commerce may greatly increase the demand for such deliveries, traditionally made by truck and van, as urban residents substitute purchases made over the Internet for those acquired in brick-and-mortar stores. To mitigate the congestion impact of truck and van traffic, as well as reduce costs and travel times, last-mile delivery...

Identification and Prioritization of Environmentally Beneficial Intelligent Transportation Technologies: Modeling Effort

Young, Troy
Sperling, Daniel;
Susan Shaheen
1999

In 1996, California Partners in Advanced Transit and Highways (PATH) commissioned a project team led by the Institute of Transportation Studies, University of California at Davis with the Claremont Graduate School to undertake a review of the environmental impacts of Intelligent Transportation Systems (ITS). The objectives of this project were to: 1) review previous qualitative and quantitative environmental assessments of ITS, from both field operational tests and modeling studies; 2) review the regulatory and policy contexts which encompass ITS; 3) develop a modeling framework suitable...

Hot, Congested, Crowded and Diverse: Emerging Research Agendas in Planning

Blanco, H
Alberti, M
Forsyth, A
Krizek, KJ
Daniel Rodriguez
Talen, E
Ellis, C
2009
This special issue explores emerging research agendas in planning. It brings together scholars from diverse schools working on new areas of research and application in urban design and planning. Emergent research agendas include both novel areas of research and important shifts in the direction of a research area. The challenge for planning schools is to reflect critically on these changes and develop long-term research agendas that can better position our field in society and academia, and provide a basis from which to assess our academic programmes. The chapters presented in this issue...

The Spatio-Temporal Clustering of Green Buildings in the United States

Kaza, N
Lester, TW
Daniel Rodriguez
2013

This paper explores the spatial and temporal patterns of green building in the commercial and institutional sectors in the US. While these buildings are becoming more commonplace, they have yet to reach a critical mass to affect the entire construction industry. Given the potential for green building practices to reduce energy consumption and carbon emissions, the paper seeks to understand the geography of green building. Using multiple metrics, it explains the patterning of geography of LEED and Energy Star certified buildings in the US. Strong evidence is found of clustering at the...

Estudos dos Efeitos das Mudancas Globais na Bacia do Rio Madeira

GarofoloLopes, L
Daniel Rodriguez
Júnior, JL
2013

Eventos hidroclimáticos extremos tem se tornado mais recorrente nas últimas décadas na bacia Amazônica. Ainda, o quarto relatório do IPCC mostra que um grande número das projeções dos modelos atmosféricos concorda na tendência de incrementos na frequência e valor destes extremos. No intuito de analisar esses eventos, sob o impacto dos efeitos das mudanças globais na bacia do Rio Madeira, foram desenvolvidas análises de series de tempo das projeções futuras de descargas. Este trabalho apresenta projeções de descargas máximas com base nas vazões geradas pelo Modelo Hidrológico de...

Framework for Testing Innovative Transportation Solutions: Case Study of Carlink, a Commuter Carsharing Program

Susan Shaheen
Novick, Linda
2005

Transit accounts for just two percent of total travel in the U.S. One reason for low ridership is limited access; many individuals either live or work too far from a transit station. In developing transit connectivity solutions, researchers often employ a range of study instruments, such asstated-preference surveys, focus groups, and pilot programs. To better understand response to one innovative transit solution, the authors employed a number of research tools, including: a longitudinal survey, field test, and pilot program. The innovation examined was a commutercarsharing model, called...

Dynamics in Behavioral Response to Fuel-Cell Vehicle Fleet and Hydrogen Fueling Infrastructure

Susan Shaheen
Martin, Elliot
Lipman, Timothy E.
2008

Transportation is a major contributor of carbon dioxide (CO2) and other greenhouse gas emissions from human activity. It accounts for approximately 14% of total anthropogenic emissions globally and about 27% in the United States. Growing concern regarding the impacts of climate change and greenhouse gas emissions has led to innovations in automotive and fueltechnology. However, behavioral response to the newest transportation technologies, such as hydrogen fuel cell vehicles (FCVs) and fueling infrastructure, is not well understood. This paper examines the results of an exploratory F-Cell...

North American Carsharing: A Ten Year Retrospective

Susan Shaheen
Cohen, Adam P.
Chung, Melissa S.
2009

Carsharing organizations (or short-term auto use) provide members access to a fleet of shared vehicles on an hourly basis, reducing the need for private vehicle ownership. This paper reflects a ten-year retrospective of carsharing in Canada and the United States (U.S.), including resultsfrom a 2008 operator survey. Since 1994, a total of 50 carsharing programs have been deployed in North America33 are operational, and 17 are defunct. As of July 1, 2008, there were 14 active programs in Canada and 19 in the U.S., with approximately 319,000 carsharing memberssharing over 7,500 vehicles in...

Demand for Carsharing Systems in Beijing, China: An Exploratory Study

Susan Shaheen
Martin, Elliot
2010

Rising auto ownership in China brings significant urban and environmental challenges. Since China is still in the early stages of motorization, there are opportunities to introduce alternatives to personal vehicle ownership. The authors conducted a survey with 800 Beijing residents, collecting data on transportation patterns, automobile ownership, environmental attitudes, and carsharing response. Fifteen of those participants were selected to complete an in-depth questionnaire discussing how they would use carsharing services. This paper assesses the potential for carsharing systems within...