Residential zoning and near-roadway air pollution: An analysis of Los Angeles

Air pollution from motor vehicles harms the health of those who live near freeways and other high-traffic roads. Land use regulations may permit, prohibit, or impose special conditions on housing near major roadways. This paper answers two questions: First, how is residential development near major roadways regulated? Second, how common are zoning changes near major roadways, and what factors explain these changes? This paper compares the zoning designations of near-roadway parcels with others in the city, and uses two sets of logistic regression models to analyze near-roadway zoning. The results show that residential development is permitted on most near-roadway parcels, including more than 92% of those within 500 feet of a freeway. One of the main explanations is that Los Angeles’s hierarchical zoning structure allows housing development in most commercial zones. While many of these parcels have commercial development today, they could be redeveloped for residential uses in the future. Larger shares of near-roadway parcels were upzoned to allow higher residential densities compared with parcels elsewhere in the city, but this difference is explained by other locational factors

Looking through the lens of size: Land use regulations and micro-apartments inSan Francisco

Small studio apartments, or micro-apartments, represent a market response to high housing costs in several major American cities. San Francisco, California, is one of the nation’s most expensive housing markets and the location of an innovative pilot microapartment policy. The literature on regulatory barriers to affordable housing has yet to pay much attention to minimum unit-size requirements. This article uses two prototype buildings to illustrate regulatory barriers to smaller units, including minimum parking standards in some parts of the city, outdoor open-space and indoor common-space provisions, unit-mix stipulations, and inclusionary zoning requirements. I recommend that cities review their codes through the lens of unit size and eliminate unnecessary impediments to small units

How Do Developers Respond to Land Use Regulations? An Analysis of New Housing in Los Angeles

There is strong evidence that land use regulations constrain housing production. We know less about how real estate developers respond to specific zoning provisions. I compare the characteristics of new multifamily housing with baseline land use regulations in two sets of rail station areas in Los Angeles. I supplement this building-scale analysis with expert interviews. I find that developers were most sensitive to density restrictions and parking requirements. The average development in the Vermont/Western area had 112% of the maximum allowable residential density and 94% of the minimum required parking. Koreatown’s average development had 99% of the maximum density and 88% of the required parking. But, there was variation by area and whether a building was affordable or market rate, apartment or condominium, and by development size. Additionally, regulatory implementation can matter as much as the written regulations themselves. I recommend that cities take an evidence-based approach to reforming regulations and implementation processes

Employment proximity and outcomes for Moving toOpportunity families

The Moving to Opportunity for Fair Housing Demonstration (MTO) randomly assigned housing vouchers to public housing residents in an experimental test of the effect of neighborhood and location on household outcomes. In terms of adult employment outcomes, the 2 treatment groups did not significantly differ from the control group. We use MTO data to examine whether spatial proximity to jobs and job growth explains this lack of treatment effect. We first estimate differences in access to jobs and job growth for the 3 MTO groups. We then use 2-stage least squares models to test relationships between employment accessibility and 2 key outcomes: employment status and earned income. We find that employment accessibility declined for all groups, and these declines were strongest for the 2 treatment groups. However, our results show essentially no effect of employment proximity on earnings or employment status for MTO participants

Hidden costs and deadweight losses: Bundled parking andresidential rents in the metropolitan United States

There is a major housing affordability crisis in many American metropolitan areas, particularly for renters. Minimum parking requirements in municipal zoning codes drive up the price of housing, and thus represent an important potential for reform for local policymakers. The relationship between parking and housing prices, however, remains poorly understood. We use national American Housing Survey data and hedonic regression techniques to investigate this relationship. We find that the cost of garage parking to renter households is approximately $1,700 per year, or an additional 17$440 million annually. We conclude by suggesting cities reduce or eliminate minimum parking requirements, and allow and encourage landlords to unbundle parking costs from housing costs

Bridging the Digital Divide in Public Participation: The Roles ofInfrastructure, Hardware, Software and Social Networks in Helsinki’s Arabianranta andMaunula

Information and communications technology (ICT) itself does not provide communities with a more effective voice in the planning process. However, when ICT is used as a tool to build stronger neighborhood social networks, it can catalyze public participation in planning. The use of ICT as a community-building tool requires a combination of network infrastructure, hardware and software, according to the literature. Additionally, it requires the utilization of human social networks. Based on my study of Helsinki’s Arabianranta and Maunula neighborhoods, I found that catalyzing collaborative planning in Helsinki using ICT requires a combination of infrastructure, hardware, software, and, most importantly, social networks. The ICT projects in Arabianranta and Maunula represent a new paradigm of technology use in the neighborhood context. Both initiatives are relatively recent (conception and implementation in the last five to seven years) and this thesis looks critically at the conditions that make it possible to use ICT in collaborative planning

Improperly-zoned, spatially-marginalized, andpoorly-served? An analysis of mobile home parks in Los Angeles County

More than 6% of Americans live in mobile homes, and yet there has been limited scholarly attention to mobile home location or quality of life compared to conditions in other housing types. There has not been a single comprehensive study to date that assesses where mobile home parks (MHPs) are located within metropolitan areas, that explores why some neighborhoods have a greater concentration of MHPs than others, or examines what environmental or basic service conditions are like in those neighborhoods. In California, more than 1 million residents live in mobile homes, with the vast majority (75%) of these living in MHPs rather than standalone units. We answer two questions in this study. First, are MHPs in “worse” neighborhoods in terms of socioeconomic status, zoning, local land uses, accessibility to jobs, and environmental quality? Second, which neighborhood factors are most strongly correlated with MHP locations and concentrations? We answer these questions using data for all mobile home parks in Los Angeles County, California. We find that MHPs are more likely to be located in lower density neighborhoods and at the urban fringe. More than 41% of MHPs are in areas zoned for commercial or industrial purposes rather than residential uses. Not surprisingly then, we find that MHPs are located in areas with more environmental hazards. A multivariate analysis of neighborhood factors confirms our hypotheses. Moreover, we find that MHPs’ access to public services is worse than the average neighborhood in the county. We recommend that policymakers engage in targeted efforts to address disparities in service access and mitigate environmental hazards

Traumatic injury survivors’ perceptions of their future: a longitudinal qualitative study

AIM: Persistent disability following traumatic injuries can disrupt future plans and create uncertainty about how to mitigate future impacts. It is unknown how or whether perceptions of the future change in the years after injury. Therefore, the aim of this study was to explore trauma survivors’ perceptions of their future over time. METHODS: A longitudinal qualitative study, nested within a population-based longitudinal cohort study, was undertaken in Victoria, Australia with survivors of serious injury. Sixty-six seriously injured adults (≥16 years) without severe neurotrauma were interviewed at 3 years post-injury (n = 66), and re-interviewed at 4 (n = 63) and 5 years (n = 57) post-injury. A longitudinal thematic analysis was performed. RESULTS: Many traumatically injured people had persistent physical and mental impacts. Participants reported being anxious about pain, mobility, work, housing and accommodation, social activities, and finances in their future. Others were hopeful and optimistic regarding their future and developed coping strategies and adopted new viewpoints. CONCLUSION: ver time, most seriously injured people’s perceptions of the future remained consistent. Some had enduring anxiety and others sustained hopeful approaches. Personalised and targeted interventions that address specific concerns could reduce anxiety and support positive adjustment following traumatic injury

The natural history and management of hamstring injuries

Hamstring injuries in sport can be debilitating. The anatomical complexity of this muscle makes uniform assessment of injury epidemiology difficult and insures that post-injury management strategies must be individually focused. This article reviews the anatomy of the hamstring, its role in athletic movement, common mechanisms of injury, and management guidelines with the goal of return into sporting activity in mind

Moving beyond physical education subject knowledge to develop knowledgeable teachers of the subject

All knowledge is socially constructed, including physical education teachers’ knowledge of their subject. It is acquired from other people either formally and deliberately (e.g. by being taught) or informally and casually (e.g. by interacting with physical education teachers or playing in a sports team). The social aspects of learning appear to be particularly strong in physical education. This has implications for the development of knowledge for teaching, with trainee teachers focusing on the development of subject, and particularly content, knowledge. Focusing on subject knowledge reinforces a traditional view of physical education as it is, not as it might be to meet the needs of young people today. It is argued that attention needs to be given not only to the knowledge, skills and competencies that trainee teachers ought to develop but also to the social aspects of their learning and development and the context in which they learn. Attention also needs to be given to how the ability to think critically can be developed so that trainee teachers can become reflective practitioners able to challenge and, where appropriate, change the teaching of the subject. Only by doing this can the particularly strong socialisation which shapes the values and beliefs of physical education teachers begin to be challenged. However, as the process of developing knowledgeable teachers is ongoing it is also necessary to look beyond teacher training to continuing professional development