Scholarly interest in the relationship between public investments and residential displacement dates back to the 1970s and the aftermath of displacement related to urban renewal. A new wave of scholarship examines the relationship of gentrification and displacement to public investment in transit infrastructure. Scholarship has generally conflated gentrification and displacement; however, this review argues for a clearer analytical distinction between the two. Although the displacement discussion in the United States began with the role of the public sector and now has returned to the same focus, it will be necessary to overcome methodological shortcomings to arrive at more definitive conclusions about the relationship.

The importance of walking and physical activity as determinants of good health has been well established in the medical and public health literature, but a significant number of Americans live sedentary lifestyles. Aplethora of variables lie behind an individual’s decision to walk, cycle, or exercise. This article focuses on a particular environmental variable, the safety of neighborhood surroundings, and explores how it is influencing physical activity. It integrates literatures from public health, criminology, and planning to identify, qualify, and evaluate the link between safety and security considerations and physical activity. It then proceeds to place safety and security concerns within a spatial context and to examine design and policy interventions that can help create environments more amenable to walking.

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The paper examines four case studies of neighborhood parks in socially and ethnically diverse communities of Los Angeles in order to explore similarities and differences of their uses and assigned meanings. More specifically, the study utilizes structured field observations and surveys of users in order to examine sociocultural patterns of park use, the relevance of past models of park design, and the level of fit between current park form and contemporary user needs.