Engenharia

One of the main factors of imbalance in the urban development of cities is undoubtedly their growth rate. In this sense, one of the main characteristics of rural-urban migration phenomena that have shaped the development of megacities in developing countries has been the need to integrate a large mass of people through processes of rapid growth of its urban plot. In this paper the growth of five different cities in Latin America is analyzed from the perspective of the impact of these processes of transformation in the urban landscape, describing different levels of pathology in their development. Consumption of periurban space, cityscape misconfiguration, or the longterm sustainability of these processes of transformation are complex issues that need to be addressed from a rigorous and technical perspective. These variables will be subject to GIS evaluation and diagnosis by territorial indicators in order to establish patterns of behaviour.

This paper examines the effects of the new economy on national city size distribution in 102 countries. Results show that the new economy has significant effects on city size distributions and such effects are heterogeneous across countries. Human capital contributes to the polarization of city size distribution in developed countries and service-dominated countries, while it helps to equalize city size distribution in industrial-dominated countries. While innovation promotes an equalized city size distribution in general, globalization promotes polarization and then equalization of city size distribution. Information and communication technology triggers an equalized followed by a polarized city size distribution, and has contributed to an equalized city size distribution in service-dominated countries. It is evident that thriving new economic processes are changing the global urban hierarchy and reshaping national city size distribution. This study facilitates an in-depth understanding of the effects of the new economy on city size distribution, which is of great importance to promote more equitable development and urbanization.

Municipal Solid Waste Management (MSWM) is a challenging issue for low-income countries, impacting on the environment, socio-economic, health, aesthetics and infrastructure, due to the generated volume of wastes, treatment and disposal methods. This challenge is often impacted by the transitioning of MSWM from mostly unsustainable methods to a sustainable level. A meaningful MSWM transition requires an understanding and consideration of historical developments and common themes. This paper reviews the common themes limiting MSWM sustainability in the BRIC (Brazil, Russia, India and China) countries as well as the historical transition of MSWM to a sustainable level in some high-income countries (United States, Japan, Denmark, and Australia). The study focuses on the interaction of MSWM with technology systems, related environmental issues, socioeconomic factors, influence on policy and decision making. The objective of the paper is to develop a holistic MSWM framework to address the prevailing issues, by systematic analysis of related and relevant literatures. The key MSWM findings drawn from the BRIC countries in this study is used to develop a thematic framework, underpinned by the different interacting factors of policy; environmental; socio-economic; and technology (PEST). The PEST thematic framework presents an adaptable systematic tool to policy and decision makers towards improving MSWM in low-income countries.

Brazil, Russia, India, China and South Africa (BRICS) as the emerging leading powers in the world have great influence on the world development. Urbanization process has been a significant engine for development in these countries, which has important effect on the sustainable development globally. However, rapid urbanization has induced various problems, such as air pollution, traffic congestion, habitat destruction, and loss of arable land. These problems present the threats to the sustainable development of urbanization in these countries. This paper presents an evaluation on the dynamic sustainability performance during urbanization process in these countries by applying an elastic coefficient method and a new-type McKinsey matrix. The data used for analysis are collected from World Bank database for the period of 1990-2011. The findings from this study suggest that during the surveyed period the Brazil, Russia and India have been engaging a sustainable urbanization practice, whilst the urbanization processes in China and South Africa are unsustainable. The study provides valuable reference in searching for solutions to further promote sustainable urbanization practice globally.

This study investigated the mobility patterns of favela residents based on an analysis of their daily movements derived from high-frequency mobile phone data. Daily movements were measured considering the distance traveled at different times of day over the course of more than two months. Potential trip purposes for the most frequently visited locations were inferred based on land use data from property taxes. The high volume of geocoded data from mobile phones enabled the analysis during multiple days, also covering weekends, usually not considered in traditional transport surveys. The mobile phone data indicated that, on average, favela residents go farther from home during business days and perform less out of home activities during weekends when compared with non-favela residents. Further, distinct patterns for favelas and non-favela residents were mapped, considering different geographical areas, revealing space and time mobility inequalities.

Popular participation consolidates one of the ways for the accountability, on the one hand from the State to the society, with the political responsibility of the managers, and on the other hand, to receive population demands. This beneficial dynamic provides social control, which can guarantee the efficiency of public policies. This control in the municipal sphere is latent since the provision of public services occurs, in practice, in the place where the citizens’ life is developed, i.e. in the city.The municipality, therefore, constitutes the form of political organization closest to the population, playing an indispensable role in the viability of the permanent process of participation in the regulation, oversight, and control over services and public goods of local interest.

Latin America is a highly urbanized region characterized by remarkable inequality levels, also reflected in an uneven distribution of opportunities, making socio-economic segregation quite visible. Since the individual possibility to travel and therefore access to urban opportunities strongly depends on socio-economic status and the distances to overcome, highly unequal patterns of mobility and accessibility emerge. The continuous expansion of Latin American cities originates specific mobility-related inequalities visible in periurban areas, which tend to lack some key urban opportunities and public transport services usually available in cities. Due to established and new patterns of territorial segregation, these areas may generate new forms of marginality in relation to mobility, posing challenges for public action and territorial governance. Our paper considers if and how periurban areas experience different forms of mobility-related inequalities in three Latin American metropolises in Brazil, Chile, and Colombia (São Paulo, Santiago, and Bogotá, respectively). We do so by examining the differences among urban core and periurban zones based on four elements: socio-demographic features, access to the public transport system, spatial continuity, and functional dependence. Our analysis shows that the three metropolitan regions have different structures: while Bogotá and Santiago appear to be more dependent on the urban core, São Paulo shows more autonomous and self-sufficient periurban zones. The analysis also highlights different forms of peripherality, defined by differentiated mobility patterns and modal choices that suggest that city-specific lines for public action might be needed.

User satisfaction has been studied extensively in social housing, but this has not had a significant impact on design factors in many cases. In recent years, such studies have included the assessment of values relating to design attributes. This paper presents a discussion on the concept of desired value in social housing, based on results of a study conducted in the region of the city of Campinas, in the State of São Paulo, Brazil. End-users of four multi-family social housing projects, based on five storey walk-up apartment blocks were asked to identify aspects of housing design, which are most valued. The research method was based on the concept of stated preferences, where approximately 200 respondents organized a list of design attributes in order of their desired values. The investigation tool was based on the analogy of a deck of cards. Data was statistically analyzed and a general importance index was created for each of the value attributes. Results showed that security was the main preference aspect. Analysis of general results indicates a list of possible improvements to projects with regard to value delivery to end-users at little or no costs. To contribute towards a process of incremental improvements to social housing models in the State of São Paulo, the results of the case study can be applied by agents of the local housing provision system, in conjunction with a conceptual framework of data on housing quality indicators.

International theory and practice have promoted state-assisted upgrading of ‘informal’ urban areas worldwide since the late 1970s, with various forms of monitoring and assessment of impact. Two independent studies of how residents perceive and evaluate such interventions have recently been undertaken for neighbouring parts of the upgraded area of Novos Alagados on the Itapagipe peninsula in the northwestern part of Salvador, Brazil’s third largest city. These studies start from different premises and have been implemented in very different ways, but both have the objective of permitting the ‘voice’ of the residents to be heard concerning the upgrading process. Comparing them helps highlight the essential ‘fuzzy’ nature of values concerning urban interventions of this nature and leaves us with thoughtprovoking questions concerning the role of local society in relation to the state in urban development, and the potential this has for on-going forms of urban management in cities which are emerging globally.

Slum clearance and resettlement schemes have increasingly become a feature of everyday life in Brazil and the rest of the world. The right to decent housing can involve relocating slum families to places that not only fulfill the precepts of adequate housing but also enhance the self-respect and quality of life of these families. Resettlement can however also heighten their vulnerabilities. This article is the result of a study which sought to evaluate how the resettled residents of a housing complex had adapted to their new surroundings following their involuntary displacement from the slums “favelas” to a development with characteristics different from those commonly found in Brazilian social housing. The research method employed in our study used tools to collect the viewpoints of the different actors in the process, and to assess user satisfaction. The uncertainty measure was used to analyze the quantitative data. The results showed that (i) involuntary removal is not a determining factor in user satisfaction, and (ii) residents' satisfaction levels are more influenced by a number of positive factors, especially the location of the housing development and its associated services, facilities and opportunities that enhance their quality of life, than by any drawbacks arising from their forced removal from the “favelas”. However, issues such as condominium management, buildings maintenance and higher costs may risk undermining the benefits of the project.