The scale of sense : spatial extent and multimodal urban design

This paper is derived from the work of the UK AHRC/EPSRC 'Designing for the 21st Century' research project Multimodal Representation of Urban Space. This research group seeks to establish a new form of notation for urban design which pays attention to our entire sensory experience of place. This paper addresses one of the most important aspects of this endeavour: scale. Scale is of course a familiar abstraction to all architects and urban designers, allowing for representations tailored to different levels of detail and allowing drawings to be translated into build structures. Scale is also a factor in human experience: the spatial extent of each of our senses is different. Many forms of architectonic representation are founded upon the extension of the visual modality, and designs are accordingly tuned towards this sense. We can all speak from our own experience, however, that urban environments are a feast for all the senses. The visceral quality of walking down a wide tree-lined boulevard differs greatly from the subterranean crowds of the subway, or the meandering pause invited by the city square. Similarly, our experience of hearing and listening is more than just a passive observation by virtue of our own power of voice and the feedback created by our percussive movements across a surface or through a medium. Taste and smell are also excited by the urban environment, the social importance of food preparation and the associations between smell and public health are issues of sensory experience. The tactile experience of space, felt with the entire body as well as our more sensitive hands, allowing for direct manipulation and interactions as well as sensations of mass, heat, proximity and texture. Our project team shall present a series of tools for designers which explore the variety of sensory modalities and their associated scales. This suite of notations and analytical frameworks turn our attention to the sensory experience of places, and offers a method and pattern book for more holistic multi-sensory and multi-modal urban design

Urban Sprawl and Sustainable Urban Policies. A Review of the Cases of Lima, Mexico City and Santiago de Chile

In recent decades, urban processes have experienced deep transformations. One of them has been the growing importance of urban sprawl. This article reviews its main features and the policies related to the paradigm of sustainability in three Latin American Megalopolises: Mexico City, Lima, and Santiago de Chile. For this purpose, we have carried out an extensive compilation of the existing academic literature. Urban sprawl in those cities cannot be understood without considering the rising housing needs of popular classes, usually addressed through the sequence settlement-parceling-building-urbanization. Simultaneously high-income groups tend to create separated and gated commodities and there is increasing spatial mobility of the middle classes. Those processes tend to generate highly segregated and increasingly patched metropolitan areas. Sustainability is framed on models of urban governance based on ecological modernization. In this context, three main sustainable policies are analyzed: water supply, green areas provision, and transport. Conclusions stress: (1) Deep changes experienced and the path-dependent element observed in the social construction of sustainability (2) Consolidation of a model of socially segregated and ecologically differentiated urban polycentrism (3) Relevance of the different megalopolises as niches of experimentation and innovation in the construction of specific forms of sustainable transition

EXPLORING A NEW URBAN STRATEGY TO ORGANIZE THE INFORMAL SETTLEMENTS IN TRIPOLI

A dynamic urban form can be defined as emerging in the planning, and development of urban centers as a city where there is a defined perimeter, inside which lies a population that is self-sufficient supporting by the technologies and economy within the city fully employs the population, the services, and cultural infrastructure within the city are sufficient to supply for the population in the cities. One of the most significant driving forces of change in any urban system is population development. This randomness in growth causes an imbalance in the civil system through environmental problems on the life system that change year after year with the emergence of environmental, health, and economic problems. In addition to the revolutions in economic development and technology, rapid urban growth can be defined by the development of suburban expansion and city center regeneration. The main aim is to challenge the static nature of traditional urban planning processes and practices to look at the potential benefits of developing cities with a focus on technology, urban layout, ecology, sustainability in Lebanon-Tripoli Saki Al-Shemaly. This research approach to futuristic strategies design based on live problems, rearrangement urban city’s zoning, design multi-function buildings, protecting occupant health and improving employee productivity to reach the Quality-of-Life Efficient Land-Use, Preservation Efficient, Transportation Management and Efficient Use of Resources to evolve and adapt to the changes, and demands of the future city. The city must grow upward or downward if the urban population swells

Extraction of low cost houses from a high spatial resolution satellite imagery using Canny edge detection filter

Since its democratic dispensation in 1994, the South African government enacted a number of legislative and policy interventions aimed at availing equal housing opportunities to the previously marginalized citizens. Mismanagement and unreliable reporting has been widely reported in publicly funded housing programmes which necessitated the government to audit and monitor housing development projects in municipalities using more robust and independent methodologies. The objective of this study was therefore to test and demonstrate the effectiveness of high spatial resolution satellite imagery in validating the presence of government funded houses using an object-oriented classification technique that applies a Canny edge detection filter. The results of this study demonstrate that object-orientated classification applied on pan-sharpened SPOT 6 satellite imagery can be used to conduct a reliable inventory and validate the number of houses. The application of the multi-resolution segmentation and Canny edge detection filtering technique proved to be an effective means of mapping individual houses as shown by the high detection accuracy of 99% and quality percentage of 96%.Keywords: Houses, Remote Sensing, SPOT 6, Canny edge detection, Multi-resolution Segmentation, Object-Oriented Classificatio

Supporting Global Environmental Change Research: A Review of Trends and Knowledge Gaps in Urban Remote Sensing

This paper reviews how remotely sensed data have been used to understand the impact of urbanization on global environmental change. We describe how these studies can support the policy and science communities’ increasing need for detailed and up-to-date information on the multiple dimensions of cities, including their social, biological, physical, and infrastructural characteristics. Because the interactions between urban and surrounding areas are complex, a synoptic and spatial view offered from remote sensing is integral to measuring, modeling, and understanding these relationships. Here we focus on three themes in urban remote sensing science: mapping, indices, and modeling. For mapping we describe the data sources, methods, and limitations of mapping urban boundaries, land use and land cover, population, temperature, and air quality. Second, we described how spectral information is manipulated to create comparative biophysical, social, and spatial indices of the urban environment. Finally, we focus how the mapped information and indices are used as inputs or parameters in models that measure changes in climate, hydrology, land use, and economics

Revisiting "Southern" Sprawl : Urban Growth, Socio-Spatial Structure and the Influence of Local Economic Contexts

Given its unpredictable nature, urban sprawl in the Mediterranean region is considered an intriguing (and intricate) socioeconomic issue.Since the 1970s, urban dispersion advanced rapidly in southern Europe-irrespective of a city's size and morphology-withurbanization rates growing faster than population. A comparison between the metropolitan areas of Barcelona, Rome and Athens reveals how sprawl has occurred in different ways in the three cities, highlighting peculiar relationships between urbanization, land-use and economic structures. Sharing common drivers of change related to population dynamics, socio-spatial structure and deregulated urban expansion, sprawl has adapted to the local economic, cultural and environmental context. Barcelona shows a dispersion pattern towards a more spatially-balanced morphology, with expanding sub-centres distributed around the central city, Rome appears to be mostly scattered around the historical city with fragmentedGiven its unpredictable nature, urban sprawl in the Mediterranean region is considered an intriguing (and intricate) socioeconomic issue. Since the 1970s, urban dispersion advanced rapidly in southern Europe-irrespective of a city's size and morphology-with urbanization rates growing faster than population. A comparison between the metropolitan areas of Barcelona, Rome and Athens reveals how sprawl has occurred in different ways in the three cities, highlighting peculiar relationships between urbanization, land-use and economic structures. Sharing common drivers of change related to population dynamics, socio-spatial structure and deregulated urban expansion, sprawl has adapted to the local economic, cultural and environmental context. Barcelona shows a dispersion pattern towards a more spatially-balanced morphology, with expanding sub-centres distributed around the central city, Rome appears to be mostly scattered around the historical city with fragmente

The Role of the Built Environment in Human Life. Selected Issues

This article attempts to outline the nature of research on space urbanised by people and to determine the four main fields of research aimed at the problems of man and the built environment. In the next part, particular attention is paid to issues related to the impact of the built environment on the life of its residents in order to highlight the particular role and complexity of this area of research. This study, acting as a kind of test of the research, cannot be considered representative. Nevertheless, the analysis prompts several reflections on the current and future role of the built environment in the development of our civilisation, as well as further challenges related to it

Supporting Global Environmental Change Research: A Review of Trends and Knowledge Gaps in Urban Remote Sensing

abstract: This paper reviews how remotely sensed data have been used to understand the impact of urbanization on global environmental change. We describe how these studies can support the policy and science communities’ increasing need for detailed and up-to-date information on the multiple dimensions of cities, including their social, biological, physical, and infrastructural characteristics. Because the interactions between urban and surrounding areas are complex, a synoptic and spatial view offered from remote sensing is integral to measuring, modeling, and understanding these relationships. Here we focus on three themes in urban remote sensing science: mapping, indices, and modeling. For mapping we describe the data sources, methods, and limitations of mapping urban boundaries, land use and land cover, population, temperature, and air quality. Second, we described how spectral information is manipulated to create comparative biophysical, social, and spatial indices of the urban environment. Finally, we focus how the mapped information and indices are used as inputs or parameters in models that measure changes in climate, hydrology, land use, and economics

Urban places for recreation – beyond dogmatic practices : case of Manzese Informal settlement Dar es Salaam

The planning and designing of cities to include urban open spaces for recreation is recognised as vital in human life. Since the middle of the 19th century, professional ideas and approaches have been used in the provision of urban open spaces. Despite this, cities in developing countries face the emergence of informal settlements due to rapid urbanisation. The informal settlements exist without being planned, but due to informal acquiring of land and building homes.As a result the settlements are compact with no urban open spaces set aside as parks or squares. Despite such condition, people recreate. Previous research on this topic is very limited. This thesis steps away from professional ideas and grounds itself in an in-depth exploration on the phenomenon of recreation and the production of spaces for recreation based on quotidian lived experiences-which is little explored in informal settlements-, in order to unpack contemporary planning and design perspectives. Located in the city of Dar es Salaam, Manzese informal settlement was used as a case study for this research, and embedded mixed methods were deployed. The findings uncover that despite their density, and despite these settlements being devoid of planned spaces for recreation, recreational activities are retrofitted in ordinary spaces categorised as public infrastructure, Outdoor spaces in residential premises and transformed indoor spaces. The findings also show that the spaces are appropriated through adaptation, negotiation, transformation and the engagement of meanings. The analysis of the findings has led to the insight that the production of spaces occurs in multidimensional perspective, and that recreational spaces should be thought of in terms of spatial temporality. Planning for recreational spaces should not be conceptualized in terms of categorical thinking between public and private, as the two can overlap. Also the concept of recreation varies according to context, as it is embedded with income generation in informal settlements. Understanding the production of spaces for recreation through quotidian spatial practices casts light on national and global policies with regards to people’s everyday ways of appropriating spaces, which is integral to the formulation of new policies