RESIDENTIAL MOBILITY AS A FORM OF URBAN POPULATION RESILIENCE � CASE STUDY: SUCEAVA TOWN

2018 ◽  
Author(s):  
Maria-Magdalena Lupchian
Keyword(s):  
Residential Mobility ◽  
Urban Population ◽  
Population Resilience

Non-linear interactions of urban and freshwater systems: Exploring implications for sustainability and water planning and management

2020 ◽  
Author(s):  
Héctor Angarita ◽  
Vishal Mehta ◽  
Efraín Domínguez
Keyword(s):  
Spatial Distribution ◽  
Urban Areas ◽  
Human Population ◽  
Urban Population ◽  
Urban Systems ◽  
Resource Base ◽  
Freshwater Systems ◽  
Non Linear ◽  
Freshwater System

<p>Human population is progressing into a predominantly urban configuration. Currently, 3.5 billion people – 55% of the total human population – live in urban areas, with an increase to 6.68 billion (68%) projected by 2050. In this progressively more populated world, a central issue of sustainability assessments is understanding the role of cities as entities that, despite their comparatively small physical footprint (less than 0.5% of the global area) demand resources at regional and global scales.</p><p>Many of the resources that sustain urban population directly depend on the freshwater system: from direct fluxes from/to the immediate environment of cities for water supply or waste elimination, to water-dependent activities like biomass (food, biofuels, fibers) and energy production. Urban and freshwater system interactions are subject to multiple sources of non-linearity. Factors like the patterns of size or spatial distribution and interconnection of groups of cities; or the nested and hierarchical character of freshwater systems, can vastly influence the amount of resources required to sustain and grow urban population; likewise, equivalent resource demands can be met through different management strategies that vary substantially in their cumulative pressure exerted on the freshwater system.</p><p>Here we explore the non-linear character of those interactions, to i. identify water management options to avoid, minimize or offset regional impacts of growing urban populations, and ii. explore long term implications of such non-linearities in sustained resource base of urban areas. We propose a framework integrating three elements: 1. properties of the size and spatial distribution of urban center sizes, 2. scaling regime of urban energy resource dependencies, and 3. scaling regime of associated physical and ecological impacts in freshwater systems.</p><p>An example of this approach is presented in a case study in the Magdalena River Basin – MRB (Colombia). The basin covers nearly one quarter of Colombia’s national territory and provides sustenance to 36 million people, with three quarters of basin inhabitants living in medium to large urban settlements of populations of 12 000 or more inhabitants and 50% concentrated in the 15 largest cities. The case study results indicate that freshwater-mediated resource dependencies of urban population are described by a linear or super-linear regime that indicates a lack of scale economies, however, freshwater systems’ capacity to assimilate those resource demands is characterized by a sublinear regime. As a result, current practices and technological approaches to couple freshwater and urban systems will not be able to withstand the resource demands of mid-term future population scenarios.  Our approach allows to quantify the projected gaps to achieve a sustained resource base for urban systems in MRB.</p>

A Case Study on Bevahiour and Lifestyles of an Urban Population

Epidemiology ◽  
2006 ◽  
Vol 17 (Suppl) ◽  
pp. S324-S325
Author(s):  
C Vollono ◽  
A Bastone ◽  
M Masciocchi ◽  
G Rago ◽  
M E. Soggiu
Keyword(s):  
Urban Population

scholarly journals Urbanisation and Urban Governance in Ghana: Identifying Key Actors and their Roles

2020 ◽  
Vol 2 (1) ◽  
pp. 88-102
Author(s):  
David Adade
Keyword(s):  
Urban Population ◽  
Urban Governance ◽  
Urban Poverty ◽  
Sustainable Cities ◽  
Urban Management ◽  
The Government ◽  
Management Approaches ◽  
Governance Processes ◽  
Socioeconomic Benefits

The rapid increase in the urban population in Africa has created many urban challenges, including informalities, waste management problems, increased health risks, and growing urban poverty. With the unplanned spatial patterns and informalities that exist with the current urban population, this raises the question of whether African cities are ready to host more than 1.3 billion people by 2050 and still achieve urban sustainability. Using Ghana as a case study, this research undertook a critical review of urban population trends and their relation with economic growth. It identified the actors of urban governance in Ghana, as well as their roles, contributions and level of participation in urban governance processes. Findings indicate that most urban management decisions in Ghana are made by the government and exclude the non-governmental actors and citizens who bear the outcome of such decisions. This has resulted in deficiencies in actualising local needs, thus hindering the provision of urban services. The study proposes an inclusive and participatory form of urban governance with active participation of non-governmental actors and a paradigm shift from the existing urban management approaches to a more sustainable one that delivers socioeconomic benefits for more inclusive and sustainable cities in Africa in the future.

scholarly journals A Visualization Tool for 1790s Charleston: Locating an Enslaved Population Using GIS

2021 ◽  
pp. 009614422110485
Author(s):  
Sarah Collins
Keyword(s):  
Eighteenth Century ◽  
South Carolina ◽  
Urban Population ◽  
Visual Representations ◽  
Study Data ◽  
Visualization Tool ◽  
Late Eighteenth Century ◽  
The City ◽  
Case Study Data

This article promotes the value of GIS methodologies to integrate and analyze a range of historic sources dating to the eighteenth century, utilizing Charleston, South Carolina as a case study. Data compiled from the 1790 Federal Census, the 1790 Charleston trade directory, and Ichnography of Charleston 1788 provide vital and complementary evidence that allows the population of the city to be located, which in turn provides a means of assessing late eighteenth-century residency patterns and the enslaved urban population. The value of data visualization is explored, underscoring the need for historians to engage with visual representations of data to communicate research results.

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