Porta, S., Romice, O., Maxwell, J. A., Russell, P., & Baird, D.
This paper presents a morphological study of 100 main street networks from urban areas around the world. An expansion in the scale of main street networks was revealed using a unique heuristic visual method for identifying and measuring the lengths of main street segments from each of the study areas. Case studies were selected and grouped according to corresponding urban design paradigms, ranging from antiquity to present day. This research shows that the average lengths of main street segments from networks of historic (i.e. ancient, medieval, renaissance, baroque and industrial) and informal case studies are much smaller relative to those from networks of more contemporary case studies (i.e. Garden City, Radiant City and New Urbanism). This study provides empirical evidence in support of prior, observational claims suggesting a consistent pattern in the smaller scale of main street networks from traditional urban areas, termed the ‘400-metre rule’. Additionally, it makes the case for further empirical research into similarly recursive spatial patterns within other elements of urban form (i.e. plots, blocks, etc.) that, if discovered, could aid in future urban design efforts to help provide the framework for more ‘human-scale’ urban environments.
Taylor, A. F., Wiley, A., Kuo, F. E., & Sullivan, W. C.
Children growing up in the inner city are at risk for a range of negative developmental outcomes. Do barren, inner-city neighborhood spaces compromise the everyday activities and experiences necessary for healthy development? Sixty-four urban public housing outdoor spaces (27 low vegetation, 37 high vegetation) were observed on four separate occasions. Overall, inner-city children's everyday activities and access to adults appeared remarkably healthy; of the 262 children observed, most (73%) were involved in some type of play, and most groups of children (87%) were supervised to some degree. In relatively barren spaces, however, the picture was considerably less optimistic: Levels of play and access to adults were approximately half as much as those found in spaces with more trees and grass, and the incidence of creative play was significantly lower in barren spaces than in relatively green spaces
Amir Hossein Askari, Ibrahim Mohd @ Ahmad & Soha Soltani
People's engagement with public open spaces is complex and affected by different factors. The importance of people's needs differs according to their age groups. In this respect, what this article aims to unveil is the priority of needs in public open spaces across age groups. A self-administered questionnaire survey collected the opinions of 400 people aged 13 years and above using the time-interval sampling method. The results revealed that the strongest inverse relationship existed between age and social needs. This illustrated that old people are less likely to carry out social interaction with other groups or to explore public open spaces compared to younger people. In turn, old people are more concerned about their physical and environmental needs. Exploring the dichotomies between the needs of old and young people highlights the intergenerational conflicts that challenge urban designers and decision makers to ameliorate the design and management of future public open spaces.
Drawing on recent developments in field theory, this article analyzes the struggle for survival of São Paulo’s street vendors in the face of a massive eviction campaign. I conceive of street vending as a social field divided into two unequal categories—licensed street vendors and unlicensed street vendors—and show that responses to the campaign varied along group lines. Unlicensed peddlers either abandoned the field or drew on local networks to continue peddling under harsher conditions, whereas licensed street vendors relied on well-established ties to actors in the political field. After these ties proved ineffective, licensed street vendors survived thanks to the intervention of a non-governmental organization (NGO) that activated the judicial field and mobilized the legal capital vested in the licenses. The linkage role performed by this actor with cross-field networks and expertise shows the strategic import of interfield relations, which replicate and reinforce the unequal distribution of assets inside the field.
