SEARCH THE DATABASE

As urbanization progresses, open space becomes structured as units of progressively smaller sizes and with more pronounced physical and functional boundaries. This paper analyzes these Open Space Units (OSUs) in Flanders, and seeks how size of open space units, hence also spatial fragmentation, affects the evaluation of these units. The results clearly confirm a ‘fragmentation bias’, meaning a lower valuation of smaller units, which leads to a strategic gap and land use uncertainty concerning large stretches of area with high degree of fragmentation. This valuation is confronted with the contrasting and positive values expressed in a strategic open space project by local stakeholders about a typical peri-urban remnant open space unit. Overcoming the ‘fragmentation bias’ in open space valuation is a continuing challenge in planning and open space policies, especially in highly urbanized environments.

Planners and urban designers place high value on public open spaces, because of the latter's contribution to the quality of life and social interaction of residents in an urban development. Many urban theorists consider open space as an important component of a healthy urban environment. It is well established in the literature that the utilisation of public space varies from context to context. This article investigates whether the utilisation of open space at the neighbourhood level is more associated with the physical and functional properties of open space or if it varies across different cultures and contexts of cities. This research adopts the method of comparative analysis, involving three case studies from different cultures, and climatic and geographical contexts. In each of these three cities, the opinions of residents and visitors about public open space were obtained and observation surveys were conducted to measure the utilisation of these spaces. The research found that the utilisation of public space at various levels of neighbourhood significantly differs between cities because of the local context, such as culture, social values and climate, instead of just being due to the physical and functional properties of open space.

This article addresses the tradeoff between the values households’ place on shared open space and parcel size, and the implications for housing development policy. Marginal implicit prices of shared open space and single-family housing parcel size are estimated using geographically weighted regression corrected for spatial autocorrela- tion. The marginal rate of substitution (MRS) of shared open space for lot size is calculated for individual households. Defining target areas based on site-specific MRSs could provide policy makers with more accurate information for designing or updating location-specific land use policies in efforts to moderate urban sprawl.

Since the early 1900's when internal open spaces became common features of English new towns and American subdivisions patterned after Radburn, planners have assumed that internal parks are desirable features in subdivision planning. However, developers in the United States have in general failed to include open spaces within new subdivisions, thus raising questions about their real economic benefits. This paper examines those benefits within the context of a Radburn-style subdivision in Dallas. Using survey and sales data, the results indicate that homeowners value the open space - both those who live directly on the internal greenbelts and those who do not. However, where the open space causes a reduction in private backyard space, homeowners do not appear to value public open space as highly as private space.

The article explores relationships among urban form, human activities and socio-economic-cultural features in Danwei compound. With Jingmian compound, a typical Danwei compound in Beijing, as a case study, the researcher studies urban form in open spaces from a socio-economic-cultural perspective. In addition, residents' activities are discussed. The research shows that open space form reflects features and transitions of Chinese society from sociological and economic perspectives. This article also proves the validity of thorough micro space form investigation.

Problems encountered in public open space provision in the urban context are investigated through a case study of the Chicago metropolitan region. Correlation and regression analyses are utilized in an attempt to explain local public open space acreage levels in terms of readily available data. Park district directors, chief municipal executives, forest preserve and conservation district directors are surveyed and interviewed in order to gain more qualitative insights. Governmental regulations in general and funding allocation practices for the region are examined for any effect on provision levels. Basic impediments to public open land provision are identified, and several solution strategies are suggested.

Existing urban open space typologies within dense urban fabrics cannot meet society’s open space requirements in developing countries’ metropolitan cities, such as Istanbul. Because of high building densities, it is a challenging task to create new open spaces within urban cores. Developing new tools that work with the existing built environment is crucial to reveal ‘opportunity spaces’ that can act as breathing points within dense urban fabrics. In this research, a new model is developed to evaluate the 3D spatial enclosure of open spaces using basic geometrical properties and geographic information system (GIS) tools. As a case study, Istanbul’s changing spatial organization is analyzed using this model.

The article focuses on public open space (POS) in small Slovenian cities. It highlights the importance of planning and designing high-quality, diverse POSs, which contribute to the quality of life and urban development in cities. POS is seen as a key physical element of a city and is defined as a non-built urban space that is, under equal terms, accessible to all. The article focuses on both green areas and civic space. Results derive from a physical analysis and survey conducted during research for a doctoral dissertation. Ten small Slovenian cities are selected, where detailed physical analysis and surveys were carried out. Designing high-quality POS for everyday activities is highlighted. The results show that the inhabitants most frequently use POS when going about their everyday business. The article highlights the importance of designing various types of POS for urban development of cities.

The development of downtown public space has been increasingly defined by agreements negotiated between the public and private sectors. In the last decades the majority of downtown public space has occurred in the form of urban plazas, built as integral parts of privately owned office and retail complexes. In this paper we document the private production of public open space in the downtown areas of Los Angeles and San Francisco - two cities that have used distinctively different policy approaches in forming public-private partnerships. We examine how the process of public open space creation is affected by the culture of planning and development, and discuss similarities and differences in the imagery and form of plazas in the two cities. It is found that urban plazas are the reflection of a market-driven urbanism. As such they are quite homoge- neous in their form despite differences in the planning style and development process encountered in the two California cities.

This paper discusses how the structure of urban public open space is created and interpreted in the mental image of its users in the case of Ljubljana, Slovenia. It reveals how spatially continuous urban open space is physically interconnected into the overall spatial structure of the city and how it is defined by a variety of the built form components. The question is how such space is present in the mental image of users and whether and how such space is structured into sub-units by its users. The paper aims to establish what its dimensions are, how it is divided into separate units at a mental level, and what the perceived hierarchical relations between such units are, in terms of spatial, functional and intangible characteristics of space that conditions this perception. It is argued that both the overall spatial structure of the city and its constituent components play an important role in how users conceptualize urban open public space.

Contemporary provision of open spaces within cities rests largely on professional assumptions about its significance in the lives of residents. This paper presents results from the Greenwich Open Space Project which used qualitative research with four, in-depth discussion groups to determine the design of a questionnaire survey of households in the borough. The research shows that the most highly valued open spaces are those which enhance the positive qualities of urban life: variety of opportunities and physical settings; sociability and cultural diversity. The findings lend some support to the approach of the urban conservation movement but present a fundamental challenge to the open-space hierarchy embodied in the Greater London Development Plan. The Project identifies a great need for diversity of both natural settings and social facilities within local areas and highlights the potential of urban green space to improve the quality of life of all citizens.

Urban plazas have proliferated in American downtowns during the last decade. This paper examines the private production of open space as a form of privatisation of a public amenity. Using three case studies of plazas built by private capital in downtown Los Angeles, the study examines their development process, design and physical layout, management, control and social uses. It is found that the spaces display characteristics drastically different from those of traditional public places. Certain design cues in combination with stringent control practices are used in these settings to promote the purposes and goals of private enterprise. Characteristics such as introversion, enclosure, protection, escapism, commercialism, social filtering and exclusivity are seen as resulting in environments that are congruent with the private interests but not always beneficial to the general public.

Urban parks are community assets, providing people places to play and rest. Access to parks in urban environments promotes social equity and improves quality of life for surrounding neighborhoods. In this context, social equity is related to accessibility, i.e. the possibility of walking or biking from home to a public park, giving people who do not have access to a variety of entertainment an option that is a public good. This paper examines the spatial distribution of urban parks in the city of Curitiba, Brazil, and how it relates to the socio-economic conditions of surrounding neighborhoods. Curitiba is known for its urban parks; however, no systematic study has been conducted to verify which neighborhoods enjoy park access within walking distance and what the socio-economic differences are between the better and worse served neighborhoods. In addition, we investigate if access to green open space has improved between the last two decennial census, a period marked by unprecedented socio-economic affluence in Brazil. Research questions, to be addressed using spatial analysis, focus on equitable distribution, and spatial evolution of parks and social equity. Variables include measurable walking distances from census tracts to parks, income data from the 2000 and 2010 Brazilian decennial censuses, and qualitative data of urban parks in Curitiba. Findings offer recommendations for future implementation of additional parks in Curitiba so that all areas of the city have adequate green open space and all citizens have equal access to recreation and leisure opportunities.

Public housing in the U.S. has undergone significant changes in site design and building type over the course of its 60 year history. These changes fall into three distinct stages: (1) semi-enclosed courts formed by walk-up buildings; (2) expanses of open space in sites composed of row-house, walk-up, or elevator buildings; and most recently (3) private outdoor spaces and semi-enclosed or fully enclosed courts for row-house and other low-rise buildings. The relationship of buildings to streets also changed during these periods. The terms court, open space, and street suggest the design approach adopted in each stage. This paper describes these design changes, using public housing in Newark, N.J. as a case in point. The authors explore the accompanying shifts in ideas and values expressed in the professional literature that constituted one basis for adopting the new designs. The discourse of architects, planners, and policy makers reveals changing attitudes about: residents' physical well-being, the role of "nature" in relation to the "city" and the relationship between public housing developments and the surrounding neighborhoods. Now, as current attitudes necessarily frame today's evaluation of the past and shape present design choices, it is important to understand both the ideas that led to past design preferences and those that guide contemporary ones.

A healthy built environment is one which connects citizens together to create a sense of community. These are influential determinants of good mental and physical health. This paper presents an overview of key research on how the built environment supports the development of community as part of creating and sustaining places for health and well-being. Formal public places such as town squares, plazas, parks and gardens cultivate community in numerous ways. Informal public places such as those in between buildings, on the street, at the train station and bus stop are also important for social encounters and interaction. Careful design of open space, neighbourhood streets and buildings can encourage human interaction as part of community creation. Evidence is presented here as a ‘Places Framework’ to illuminate the ways in which place strengthens community. The paper concludes by discussing and critically evaluating policy implications for urban planners and designers. Major gaps in the research are identified and suggestions made for future investigative work to strengthen the evidence for building healthy communities through built environment interventions.

Leisure preferences and open space needs were explored within a discrete, homogeneous ethnic community: the Chinese Americans of Chicago's Chinatown. Face-to-face interviews and focus group discussions were used to identify outdoor leisure patterns and preferences, in general, and with respect to new park development being planned for the community. Findings show that although some popular activities are no different from what might be expected for the mainstream Anglo American population, the meaning and significance of these activities have clear and unique ties to Chinese culture. Preferences for the new Chinatown park development mirror activity preferences, emphasizing facilities that enhance the natural environment for passive activities. Notable differences in activity preferences were found within the sample of respondents according to age, generational status, and other factors. Park planning considerations and future research needs are identified.

In 2003, for the second year running, the Paris municipality entrusted a young theater designer with the transformation of one stretch of the banks of the Seine River—normally congested with heavy traffic—into an open space evocative of the seaside. Paris in August is therefore Paris by the seaside. The objective of our study is to examine the entire operation, from the moment the political decision was taken by the municipality to the many and varied activities of all those who participated. Through this study, we attempt to highlight the different forms of material and symbolic (re)creation of Paris being undertaken today. We show that in a situation such as this, a reflection on the fieldwork undertaken and the production of ethnographic knowledge is in fact the key factor in the analysis.

Urban public open spaces are an important part of the urban environment, creating the framework for public life. The transformation of open space into successful public places is crucial in this regard. In the context of target-driven performance it is essential to identify the value of successful public open places, along with characteristics that define them. This research evaluated three case studies in Belgium (Namur, Wavre and La Louviere) which successfully transformed spaces into lively public open places. The transformation was captured by means of before-and-after imagery and analyses, and evaluated in terms of space-usage prior to, and after redesign, along with the experience and added value that the redesign brought to the area.

China, like many other nations, struggled in the twentieth century with defining an indigenous landscape design tradition. This was particularly true in addressing urban open space design after China implemented the Open Door Policy in the late 1970s, when Chinese garden design traditions became largely neglected. The objective of this study is to determine whether the traditional design approach could still effectively serve as modern design inspiration. Built upon a previous study by Wu (1999), our study is a reflective critique on modern Chinese urban public space design. We compare major types of traditional and modern Chinese urban open spaces. The percentage areas of five landscape variables that Wu proposed (planting, water, rock, architecture and pavement) were quantified using Photoshop and ArcGIS software. Although Wu (1999) compared only scholars' gardens (a traditional model) with modern parks (a modern model), we include imperial gardens (another traditional model) and urban plazas (another modern model). In addition, we supplemented Wu's plan analysis with perspective view analysis (photographs). Our results suggest more similarities between traditional and modern landscapes than previously suggested. This article concludes by suggesting that traditional models can be relevant to contemporary urban public space design in China.

The article concentrates on emerging relationships between physical characteristics of urban open spaces and their uses. It draws on a combination of behaviour mapping and geographic information system (GIS) techniques - as applied to urban squares and parks in two European cities, Edinburgh (UK) and Ljubljana (Slovenia) - to reveal common patterns of behaviour that appear to be correlated with particular layouts and details. It shows actual dimensions of effective environments for one use or more of them and shows how design guidance can be arrived at, based on the particulars of the case study sites and cities. In addition, the value of this article is in exploring GIS, a tool that is currently irreplaceable in spatial analysis and planning processes for urban areas, as a detailed analytical and visualisation tool that helps to describe inner structure of places revealed by behaviour patterns.