Research Papers: Sustainable Cities and Their Built Environments

Estimating Traffic Noise Over a Large Urban Area: An Evaluation of Methods

By Rob McConnell

Environmental International

2022

Unlike air pollution, traffic-related noise remains unregulated and has been under-studied despite evidence of its deleterious health impacts. To characterize population exposure to traffic noise, both acoustic-based numerical models and data-driven statistical approaches can generate estimates over large urban areas. The aim of this work is to formally compare the performances of the most common traffic noise models by evaluating their estimates for different categories of roads and validating them against a unique dataset of measured noise in Long Beach, California. Specifically, a statistical land use regression model, an extreme gradient boosting machine learning model (XGB), and three numerical/acoustic traffic noise models: the US Noise Model (FHWA-TNM2.5), a commercial noise model (CadnaA), and an open-source European model (Harmonoise) were optimized and compared. The results demonstrate that XGB and CadnaA were the most effective models for estimating traffic noise, and they are particularly adept at differentiating noise levels on different categories of road.


A Meta-Narrative Literature Synthesis and Framework to Guide Future Evaluation of Legal Empowerment Interventions

By Katherine Footer, Michael Windle, Laura Ferguson, Jordan Hatcher, Carrie Lyons, Emma Gorin, Anne L. Stangl, Steven Golub, Sofia Gruskin, Stefan Baral

Health and Human Rights, 20

2018

Legal empowerment is increasingly recognized as a key approach for addressing socio-structural determinants of health and promoting the well-being and human rights of vulnerable populations. Legal empowerment seeks to increase people’s capacity to understand and use the law. However, limited consensus remains on the effectiveness of legal empowerment interventions in optimizing health outcomes. Leveraging a meta-narrative approach, we synthesized literature describing how legal empowerment interventions have been operationalized and empirically studied with respect to health determinants. The studies included here document diverse legal empowerment approaches and highlight how interventions changed the context surrounding the health of vulnerable populations. The absence of robust conceptualization, operationalization, and measurement of the risk contexts in which legal empowerment approaches operate limits the clarity with which interventions’ impact on health can be ascertained. Despite this, legal empowerment is a promising approach to address the health of marginalized populations. To foster support between the fields of legal empowerment and health, we explore the limitations in study design and measurement of the existing evidence base; such scrutiny could strengthen the rigor of future research. This paper provides a guide to the socio-structural levels across which legal empowerment interventions impact health outcomes in order to inform future interventions.


Collaboration as an Organization Design for Shared Purpose

By Paul S. Adler, Charles Heckscher

Toward Permeable Boundaries of Organizations? Research in the Sociology of Organizations

2018

“Shared purpose,” understood as a widely shared commitment to the organization’s fundamental raison d’eˆtre, can be a powerful driver of organizational performance by providing both motivation and direction for members’ joint problem-solving efforts. So far, however, we understand little about the organization design that can support shared purpose in the context of large, complex business enterprises. Building on the work of Selznick and Weber, we argue that such contexts require a new organizational form, one that we call collaborative. The collaborative organizational form is grounded in Weber’s value-rational type of social action, but overcomes the scale limitations of the collegial form of organization that is conventionally associated with value-rational action. We identify four organizational principles that characterize this collaborative form and a range of managerial policies that can implement those principles.


GIS&T and Geodesign

By Darren Ruddell, Kelleann Foster

The Geographic Information Science & Technology Body of Knowledge (3rd Quarter 2018 Edition)

2018

Geodesign leverages GIS&T to allow collaborations that result in geographically specific, adaptive and resilient solutions to complex problems across scales of the built and natural environment. Geodesign is rooted in decades of research and practice. Building on that history, is a contemporary approach that embraces the latest in GIS&T, visualization, and social science, all of which is organized around a unique framework process involving six models. More than just technology or GIS, Geodesign is a way of thinking when faced with complicated spatial issues that need systematic, creative, and integrative solutions. Geodesign holds great promise for addressing the complexity of interrelated issues associated with growth and landscape change. Geodesign empowers through design combined with data and analytics to shape our environments and create desired futures.



The Distribution of Environmental Damages

By Solomon Hsiang, Paulina Oliva, Reed Walker

Review of Environmental Economics and Policy, Volume 13, Issue 1

2019

Most regulations designed to reduce environmental externalities impose costs on individuals and firms. A large and growing literature examines whether these costs are disproportionately borne by different sectors of the economy and/or across different groups of individuals. However, much less is known about how the environmental benefits created by these policies are distributed, which mirror the differences in environmental damages associated with existing environmental externalities. We review this burgeoning literature and develop a simple general framework for empirical analysis. We apply this framework to findings concerning the distributional impacts of environmental damages from air pollution, deforestation, and climate change and highlight priorities for future research. A recurring challenge to understanding the distributional effects of environmental damages is distinguishing between cases in which populations are exposed to different levels or changes in an environmental good and those in which an incremental change in the environment may have very different implications for some populations. In the latter case, it is often difficult to empirically identify the underlying sources of heterogeneity in marginal damages because damages may stem from nonlinear and/or heterogeneous damage functions. Nevertheless, understanding the determinants of heterogeneity in environmental benefits and damages is crucial for welfare analysis and policy design.


Social Sustainability and Global Climate Change

By Lawrence A. Palinkas, Marleen Wong

Social Work and Sustainability in Asia

2019

Maintaining social sustainability in the context of global climate change is among the most pressing challenges facing contemporary societies in the Asia-Pacific Rim. These societies are increasingly being confronted with a host of changes in the physical environment, ranging from natural disasters, rising air and water temperatures, rising sea levels and ocean acidification, prolonged droughts and scarcity of fresh water in some regions, and extensive flooding in other regions. All of these changes are contributing to the wholesale destruction of natural ecosystems on land and sea. They also have profound social implications, threatening human health and well-being, destabilizing assets, coping capacities, and response infrastructures, and substantially increasing the number of socially, economically, and psychologically vulnerable individuals and communities. Moreover, these impacts will not affect everyone equally, leading to new social inequities with significant social justice implications. In this chapter, we summarize the human impacts of global climate change with a focus on the sustainability of individuals, families, and communities. We then address strategies for promoting sustainability in the face of two specific impacts: population displacement and disaster response and recovery. These strategies adhere to a three-tier model of climate change impact and response, and include microlevel interventions designed to prevent and mitigate behavioral and mental health impacts; mezzo-level interventions to prevent and mitigate social conflict within families and communities; and macro-level policies and programs designed to build and support individual, families, and community resilience, assets, and action.


Can compact rail transit corridors transform the automobile city? Planning for more sustainable travel in Los Angeles

By Douglas Houston, Marlon Boarnet, Gavin Ferguson, Steven Spears

Urban Studies

2014

Directing growth towards compact rail corridors has become a key strategy for redirecting auto-oriented regions towards denser, mixed-use communities that support sustainable travel. Few have examined how travel of near-rail residents varies within corridors or whether corridor land use–travel interactions diverge from regional averages. The Los Angeles region has made substantial investments in transit-oriented development, and our survey analysis indicates that although rail corridor residents drove less and rode public transit more than the county average, households in an older subway corridor with more near-transit development had about 11 fewer daily miles driven and higher transit ridership than households along a newer light rail line, a difference likely associated with development patterns and the composition and preferences of residents. Rail transit corridors are not created equally, and transit providers and community planners should consider the social and development context of corridors in efforts to improve transit access and maximise development.


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