International Journal of Civil Engineering and Technology (IJCIET) Volume 10, Issue 04, April 2019, pp. 1828–1836, Article ID: IJCIET_10_04_191 Available online at http://www.iaeme.com/ijmet/issues.asp?JType=IJCIET&VType=10&IType=4 ISSN Print: 0976-6308 and ISSN Online: 0976-6316 © IAEME Publication Scopus Indexed PARADIGMS FOR SHAPING URBAN DEVELOPMENT LANDSCAPES IN THE WORLD – A DIAGNOSIS OF THEIR FOCUS AND CHARACTERISTICS Gayathri Viswanathan Ph.D. Research Scholar, School of Architecture, Hindustan Institute of Technology & Science, OMR, Padur, Chennai, India Dr. Sheeba Chander Professor and Head {P & M}- School of Architecture, Hindustan Institute of Technology & Science, OMR, Padur, Chennai, India ABSTRACT Cities are centers of knowledge and sources of growth and innovation and possess exceptional possibilities for economic development. At the same time, however, the cities undergo certain transformation due to urbanization and thus need to face the urban development challenges. The paper discusses briefly on the paradigms (independent or multiple paradigms) the cities adopt and in over the years how there has been a paradigm shift that address the urban development issues. The paradigm shift has been analyzed based on extensive literature review of significant paradigms that have been implemented in several cities in the world in the last decades. An extensive study has summed up the tools for analysis- selected parameters and characteristics of numerous urban development paradigms. Key words: Urban Development Paradigms – Compact, Resilient, Smart, Sustainable, Walkable Cite this Article: Gayathri Viswanathan and Dr. Sheeba Chander, Paradigms for Shaping Urban Development Landscapes in the World – A Diagnosis of their Focus and Characteristics, International Journal of Civil Engineering and Technology 10(4), 2019, pp. 1828–1836. http://www.iaeme.com/IJCIET/issues.asp?JType=IJCIET&VType=10&IType=4 1. INTRODUCTION The city that is enjoyed today has not come about by accident. It has been shaped by the foresight and planning of earlier generations. The legacy of their vision is seen in the vibrant places. But the city of the future cannot be planned with yesterday‟s thinking. As the city grows and develops, the growth needs to be managed that it responds to long-term patterns of economic, social and environmental change; that enhance concepts/paradigms including http://www.iaeme.com/IJCIET/index.asp 1828 editor@iaeme.com Paradigms for Shaping Urban Development Landscapes in the World – A Diagnosis of their Focus and Characteristics liveability, sustainability, resilience, etc. leading to a better quality of life and that capitalize on opportunities to strengthen the productivity and competitiveness. 2. WORLD URBANIZATION Urbanization in the world is growing at a faster rate (Figure 1). Urbanization is also critical to whether a global shift toward sustainable practices within Earth‟s planetary boundaries can be achieved [1]. The literature also suggests that the urban growth is faster in the developing countries including in India that has been undergoing a faster urbanization [2]. Because of the sheer size of the urban population, issues that are being encountered by the cities are also different to each other. Hence, it is also argued that addressing how to address the urban development issues in different urban areas has to be looked at it in a different perspective [3]. Urbanization is basically linked to the three pillars of sustainable development: economic development, social development and environmental protection [4]. Evidences also reveal that the urban areas around the world are facing vast challenges and modifications than they did 20 years ago. Many cities all over the world are grossly unprepared for the challenges associated with urbanization [3]. Cities in the developing world face the toughest challenges, as they will see the vast majority of urban growth over the next 30 years [4] and experience the highest degree of change, often with the lowermost levels of resources and institutional capabilities. Figure 1: Global patterns of urbanisation 1995 & 2015 Source: Based on United Nations 2014b 3. PARADIGMS IN ADDRESSING URBAN DEVELOPMENT CHALLENGES AND THEIR SHIFT Evidences [5-9] reveal that “city development framework” around the world has been centered on some “concepts and development paradigms”, that are essential to support development decision and competitions amongst the cities. They help to find solutions fostering urban development from single measures to holistic approaches. Actions regarding adaptation, resilience and sustainable economic growth are features of most of these concepts towards a good quality of life in cities. Currently, there is no synthetic information about the variety of these city concepts (like Eco-City, Intelligent City, Smart City, and Renewable City) found in literature (see Table 1). Although paradigms/concepts such as „garden city‟, „inclusive city‟, „competitive city‟ and „intelligent city‟ tend to refer to one specific domain, the more commonly used paradigm/concept tend to have broad, hybrid or ambiguous meanings. This particularly applies to existing phrases such as „smart cities‟, „sustainable cities‟, „future cities‟ and „liveable cities‟. The high degree of conceptual crossover and overlap means most concepts are highly compatible with each other, but reflect different sources or alliances, often with a desire to suggest conceptual differentiation despite substantive overlap. http://www.iaeme.com/IJCIET/index.asp 1829 editor@iaeme.com Gayathri Viswanathan and Dr. Sheeba Chander Table 1 Urban development paradigms practiced in the world Environmental Garden cities Sustainable cities Eco cities Green cities Compact cities Smart Cities Social Economic Governance Participated cities Entrepreneurial cities Managed cities Walkable cities Competitive cities Intelligent cities Integrated cities Productive cities Productive cities Inclusive cities Innovative cities Efficient cities Just cities Business friendly cities Well-run, well-led cities Open cities Global cities Future cities Livable cities Resilient cities Source: Compiled from -“Government office of science (2014),”What are Future Cities? Origins, Meanings and Uses”, Catapult future cities, P-12 3.1. Paradigm shift The review of literature related to paradigm shift suggests that there has been a shift in the number of paradigms (see Figure 2) in addressing urban development challenges from 1983 onwards. It is also evident that from year 2000 onwards there have been a multiple shift of paradigms happening throughout the world in addressing the urban development problems. Cities also adopt many paradigms in an attempt to become better equipped to plan and shape their futures, as they acquire and build new governance systems, finance tools, data streams, and city management techniques. Therefore, the science of cities is still emerging and has not yet generated global language norms. It is also an inter-disciplinary science, and this makes clarity of concepts harder to achieve. Figure 2: Paradigm shift perspective Source: Google Scholar as quoted in -“Government office of science (2014),”What are Future Cities? Origins, Meanings and Uses”, Catapult future cities, P-13 3.2. Smart City The various review of a number of literature evidences suggest that smartness in a city means different things to different people. It could be smart design, smart utilities, smart housing, smart mobility, smart technology etc. Thus, it is rather challenging to give a definition of a smart city. The paradigm of smart cities was originated at the time when the entire world was facing one of the worst economic crises. In 2008, IBM began work on a 'smarter cities' http://www.iaeme.com/IJCIET/index.asp 1830 editor@iaeme.com Paradigms for Shaping Urban Development Landscapes in the World – A Diagnosis of their Focus and Characteristics concept as part of its Smarter Planet initiative. By the beginning of 2009, the concept had enchanted the imagination of numerous nations across the globe. There are several fields of activity, which are described in literature in relation to the term Smart City: industry, education, participation, technical infrastructure, various „soft factors‟. Giffinger et.al (2007) [7], argued that a city performs well in a forward-looking way with the six characteristics of smart cities such as: Smart Economy; Smart Mobility; Smart Environment; Smart People; Smart Living; and Smart Governance. The smart city paradigm also emphasizes the importance of four pillars viz., Institutional Infrastructure (including Governance), Physical Infrastructure, Social Infrastructure and Economic Infrastructure. Evidences also reveal that smart city technologies and paradigms have been implemented in cities of Santander (Spain), Southampton, Amsterdam, Barcelona, Seattle, Helsinki (Finland), Singapore, Stockholm, and 100 cities in India under Smart Cities Mission, Government of India. 3.3. Compact City The literature studies including Elkin et.al., (1991) [10] suggest that a compact city is the “intensification of the use of space in the city with higher residential densities and centralization”. The urban form of the compact city, referred to as the compact urban form, is generally supposed to promote environmental, social and global sustainability by increasing the compactness of the built up area and residential population, intensifying urban economic, social and cultural activities and manipulating urban size, form, structure and settlement systems. Jabareen (2006) [11], states that prior to the international promotion of the sustainable development agenda, the idea of a radiant city was proposed by Le Corbusier‟s La Ville Radieuse. Montavon, et al., (2006) [12] , stated that the paradigm involved clearance and building skyscrapers to allow the combination of high population densities and large open spaces. Following Le Corbusier‟s ideas of the radiant city, mathematician Saaty et.al. (1973) [13] proposed that the compact city‟s vision was to improve the quality of life but not at the expense of the “next generation”. The compact city development leads to creation of diverse, compact, and mixed neighborhoods. Bob et.al.,(2004) [8] stated that everyday activities, such as housing, work, schools, shops and other amenities, are all ideally within nineteen minutes walking distance of each other. Compact city includes a focus on: urban regeneration; the revitalization of urban cores; the promotion of public and non-motorized transport; extensive environmental controls; and high standards of urban management. The objective is to provide a pleasing, contented, remarkable and safe environment for pedestrians and to arrange for substitutes to car use such as public, transit and cycling facilities. Cities including Amsterdam, Brazil, Melbourne, Paris, Portland, Vancouver, and so forth have implemented the paradigm of compact city. 3.4. Walkable City A number of studies suggest that walkability is a paradigm, which is known as measurement of the pedestrian-friendly‟s degree of an area. This term recently have been focused by urban designer and planners to make a sustain environment to communicating, recreation, and shopping by pedestrian base. Abley (2005) [14] states that walkability has health, environmental, and economic benefits. Features influencing walkability comprise the presence or absence and quality of footpaths, sidewalks or other pedestrian rights-of-way, traffic and road conditions, land use patterns, building accessibility, and safety, among others. Piotr Czech et.al., (2017) [5] states that to claim that a city is “walkable”, it is necessary to meet four basic conditions: security, functionality, attractiveness and convenience. http://www.iaeme.com/IJCIET/index.asp 1831 editor@iaeme.com Gayathri Viswanathan and Dr. Sheeba Chander According to the main aim of the research to find out the effects of walkable environment on sustainability, it is considerable that walkability has been known as a foundation for a sustainable city. Walking and bicycling are known as green types of transportation have low impact on environment and has an important role on congestion reducing. Aida (2016) [15], stated that walkability and built environment have strong relationship together by social and physical variables, which make a vital and sustainable space. Walkable cities including Stroget, Melbourne, Hudson, (Ohio), Stockholm, Amsterdam, Adelaide, etc., are also compact and sustainable. 3.5. Sustainable City The various review of a number of literature evidences suggest that sustainable development has been defined the paradigm of sustainable development was originally synonymous with that of sustainability and is often still used in that way. According to different sources, the concept of sustainability in the sense of a balance between resource consumption and reproduction was however applied to forestry already in the 12th to 16th century”. Kahn (1995) [17] states that the paradigm of „sustainable development‟ described in Agenda 21, in fact, rests on three conceptual pillars such as „economic sustainability‟, „social sustainability‟, and „environmental sustainability‟. Basiago (1999) [9] stated that sustainable cities deliver the building blocks for transforming societies into a low carbon economy with increasing socioeconomic benefits, as citizens gain access to services and opportunities to improve their quality of life and financial outlook for cities including Frankfurt, London, Copenhagen, Amsterdam, Rotterdam, Berlin, Seoul, Hong Kong, Madrid, Singapore, and so forth. 3.6. Resilient City The literature studies suggest that resilience refers to equipping cities to face future shocks and stresses from climate change and depleted oil and fuel sources and make it through crises. Resilience replicates a city's capability to persevere in the face of emergency, to continue its core mission despite daunting challenges. Coaffee et.al, (2008) [6] states cities, particularly in the developing world, face numerous challenges in responding to a growing urban population by meeting rising demands for housing, food, water, transportation and other infrastructure or services that ensure people‟s wellbeing. Moreover, these cities need to contend with the implications of known natural hazards and increasingly unpredictable weather as a result of climate change. Vale (2014) [19] states that the focus of the resilient concept is to activate protective qualities and processes at the individual, community, institutional and systems level to engage with hazards and support with each other in order to maintain or recover functionality and thrive while adapting to a new equilibrium and minimizing the accumulation of pre-existing or additional risks and vulnerabilities. Resilient cities such as Stockholm, Copenhagen, San Francisco, Tokyo, Chennai, Melbourne, Paris, etc., promote sustainable development, well-being and inclusive growth. 4. DIAGNOSIS OF PARADIGMS The forces of globalization place cities into direct competition with one another, cities are required to deliver thriving economies, great quality of life, political stability, business friendliness and a reduced ecological influence in order to be competitive not only on a regional or national scale, but globally. Therefore, it is Important to understand the kind of solutions that would be suitable to different cities. Understanding of that kind of a paradigm is very important. Historically, the solutions were given for different challenges faced by the cities in different parts of the world. Different paradigms were used for addressing the challenges of urban areas. For instance, the green cities paradigm dwelled upon actions to http://www.iaeme.com/IJCIET/index.asp 1832 editor@iaeme.com Paradigms for Shaping Urban Development Landscapes in the World – A Diagnosis of their Focus and Characteristics bring in making the cities: more greener; use of non-renewable energy; sources in bringing the cities more manageable; and approaches, which would bring in reduction in carbon footprint by adopting environment friendly technologies, and so forth. An attempt has been made to assess all paradigms adopted in the world using following 7 parameters: (1) Focus; (2) Degree of comprehensiveness; (3) Scale & coverage; (4) Land use efficiency; (5) Transportation efficiency; (6) Low Carbon Emission & efficient urban form; and (7) Sociocultural efficiency. The findings of the assessment are presented in the ensuring section. 4.1. Focus & Degree of Comprehensiveness By and large, most paradigms focus on four key development areas namely Physical Development, Economic Development, Social Development, and Ecological Development. Some paradigm focuses on all four some less than four key areas. Hence, large the coverage the higher be the comprehensiveness of the focus of the paradigm Therefore, the parameter Focus of Paradigm (Physical Development, Economic Development, Social Development, Ecological Development) and Degree of Comprehensiveness of the Paradigm have been used to assess various paradigms using the scoring criteria of High (all 4 focus areas- Physical + Economic + Social + Ecological Development) Medium(any 3 focus areas), Low (any 2 focus areas )and Very low (Any one focus area). Sl.No. Degree of Comprehensiveness Paradigm 1 Smart city Medium 2 Compact city Low 3 Walkable City Low 4 Sustainable city High 5 Resilient City Medium Focus of the Paradigm Physical, Social and Ecological Development Economic, Social and Ecological Development Economic and Ecological Development Physical, Economic, Social and Ecological Development Physical, Social and Ecological Development Source – Researcher‟s Analysis. 4.2. Scale/Coverage: Evidences also reveal that some paradigm covers comprehensively the challenges of all levels – city region level, metropolitan area level, sub-city level and neighbourhood level. Therefore, the parameter Scale / Coverage of the Paradigm has been analyzed at the City Region Level (High), City / Metropolitan area level (Medium), Sub-city level (Low) and the Neighbourhood level (very low). Sl.No. Paradigm Scale 1 Smart city High 2 Compact city 3 Walkable City Low - Very Low Very Low 4 Sustainable city High 5 Resilient City Medium Source – Researcher‟s Analysis. http://www.iaeme.com/IJCIET/index.asp Coverage of the Paradigm Sub-city (part of city) levels. However, limited components of smart city have been implemented in city level. Neighbourhood and sub-city (part of city) levels. Neighbourhood levels. Sub-city (part of city) levels. However, limited components of smart city have been implemented in city level. City / metropolitan level. 1833 editor@iaeme.com Gayathri Viswanathan and Dr. Sheeba Chander 4.3. Land use efficiency Some paradigms promote all types of land use efficiency syndromes such as High density & Mixed Use built form; Medium density & Mixed Use built form; Low density & Mixed Use built form; and very low density single use built form. Therefore, the parameter land use efficiency promoted by the Paradigm has been analyzed with respect to the following indicators: High density & Mixed Use built form (High);Medium density & Mixed Use built form (Medium);Low density & Mixed Use built form (Low) and very low density single use built form (very low). Sl. No. 1 2 Smart city Compact city Scale of efficiency High High 3 Walkable City High 4 Sustainable city Medium 5 Resilient City Medium Paradigm Land use efficiency promoted by the Paradigm High density and mixed use development High density and mixed use development. High density and mixed use development to promote walking Medium density with energy efficiency development Promotes medium density with energy efficiency development. Source – Researcher‟s Analysis. 4.4. Transportation efficiency The literature also reveals that some paradigms promote transportation efficiency through all modes including public transit, walkability, and safety & security, and some limits to few of them. The Transportation efficiency of the Paradigm has been examined by the factors: Public transit+ Walkability+ Safety & Security (High); Public transit + Low walkability (Medium); High Private transport + Low walkability (Low); and High Private transport (Very Low). Sl.No. Scale of efficiency Paradigm 1 Smart city High 2 Compact city High 3 Walkable City High 4 Sustainable city Medium 5 Resilient City Medium Transportation efficiency of the Paradigm Intelligent transport and mobility systems, traffic and parking management. Public transportation, use of bicycle and walkability as the focus. Use of bicycle and walkability. Public transportation, use of bicycle and low walkability as its focus. Public transportation, use of bicycle and low walkability as its focus. Source – Researcher‟s Analysis. 4.5. Low Carbon Emission & Efficient urban form Low Carbon Emission & efficient urban form promoted by the Paradigm is evaluated by the following criteria: Substantial open space + Green buildings+ Smart Technology + Walkability (High); Medium Open space + Green buildings+ Smart Technology +Walkability (Medium); Fewer area under open spaces (Low); and No open spaces (very Low). Sl.No. Paradigm Scale 1 Smart city Low 2 Compact city Medium 3 Walkable City High Low Carbon Emission & efficient urban form promoted by the Paradigm Green technology, smart technology, substantial open space and walkability concepts. Green technology, smart technology, medium area under open space and walkability concepts. Fewer areas under open space low carbon emission due to walkability and cycling. http://www.iaeme.com/IJCIET/index.asp 1834 editor@iaeme.com Paradigms for Shaping Urban Development Landscapes in the World – A Diagnosis of their Focus and Characteristics Sl.No. Paradigm Scale 4 Sustainable city Medium 5 Resilient City Medium Low Carbon Emission & efficient urban form promoted by the Paradigm Green technology, smart technology, medium area under open space and walkability concepts. Green technology, smart technology, medium area under open space and walkability concepts. Source – Researcher‟s Analysis. 4.6. Socio-cultural efficiency promoted Socio-cultural efficiency promoted by the Paradigm is considered as per the following features: Affordable housing + slums + gender equity (High); Affordable housing + slums (Medium); Affordable housing (Low); and None (Very Low). Sl.No. Paradigm 1 2 3 Scale of efficiency High High Medium Smart city Compact city Walkable City Sustainable 4 Medium city 5 Resilient City Medium Source – Researcher‟s Analysis. Socio-cultural efficiency promoted by the Paradigm Affordability and socio cultural equivalence Affordability and socio cultural equivalence. Vegetation to control urban microclimate and affordability. Vegetation to control urban microclimate and affordability. Vegetation to control urban microclimate and affordability. 5. CONCLUSIONS The conclusion emerges out of the above discussed assessment of various paradigms are as follows: The characteristics of most Urban Development Paradigms are unique. Their focus are limited to addressing strategies for either one or combination of two areas such as physical, social, ecological and economic development. They addressed the need for evolving a comprehensive paradigm, which could be addressing all focus areas. 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