scholarly journals Understanding the concept of urban village in Hanoi city, Vietnam: Social - Spatial - Economic interactions with surrounding urban areas

2021 ◽  
Vol 15 (1) ◽  
pp. 132-149
Author(s):  
Ta Quynh Hoa ◽  
Phan Tien Hau
Keyword(s):  
Urban Areas ◽  
Economic Transformation ◽  
Rural Settlements ◽  
Structured Interviews ◽  
Rapid Urbanization ◽  
Urban Village ◽  
Models Of Development ◽  
Development Context ◽  
The Impact ◽  
Urban Villages

In cities throughout Asian countries, there is an increasingly ubiquitous presence of “urban villages” that reflects the transformation of traditional farming villages into urban places under the impact of rapid urbanization. Hanoi - one of the two biggest cities in Vietnam - has been witnessing the fast changes of rural settlements into urban built environments during the in-situ urbanization process since the 1990s. It is very important to have a comprehensive understanding of the urban village model in the urban development context of Hanoi city. Therefore, the major aims of this research are to examine the characters of the urban villages formed by the urban sprawl in peri-urban areas, to explore the interactions among urban villages and surrounding new urban areas in terms of socio-economic and spatial aspects, and to detect the gaps, if any, between the two models of development. Yen Xa urban village in Tan Trieu commune was chosen as a case study. Structured and semi-structured interviews with villagers and local authority’s representatives were conducted in the research. The first findings from research are expected to propose recommendations that will help bridge the gaps between the two urban settlement models in terms of legal, physical and psychological aspects towards sustainable development. Keywords: urban village; urbanization; socio-economic transformation; peri-urban; Hanoi city.

scholarly journals UVLens

2021 ◽  
Vol 5 (2) ◽  
pp. 1-26
Author(s):  
Longbiao Chen ◽  
Chenhui Lu ◽  
Fangxu Yuan ◽  
Zhihan Jiang ◽  
Leye Wang ◽  
...  
Keyword(s):  
Large Scale ◽  
Floating Population ◽  
Open Government ◽  
Residential Areas ◽  
Rapid Urbanization ◽  
Urban Village ◽  
Open Government Data ◽  
Government Data ◽  
Real World Datasets ◽  
Urban Villages

Urban villages refer to the residential areas lagging behind the rapid urbanization process in many developing countries. These areas are usually with overcrowded buildings, high population density, and low living standards, bringing potential risks of public safety and hindering the urban development. Therefore, it is crucial for urban authorities to identify the boundaries of urban villages and estimate their resident and floating populations so as to better renovate and manage these areas. Traditional approaches, such as field surveys and demographic census, are time consuming and labor intensive, lacking a comprehensive understanding of urban villages. Against this background, we propose a two-phase framework for urban village boundary identification and population estimation. Specifically, based on heterogeneous open government data, the proposed framework can not only accurately identify the boundaries of urban villages from large-scale satellite imagery by fusing road networks guided patches with bike-sharing drop-off patterns, but also accurately estimate the resident and floating populations of urban villages with a proposed multi-view neural network model. We evaluate our method leveraging real-world datasets collected from Xiamen Island. Results show that our framework can accurately identify the urban village boundaries with an IoU of 0.827, and estimate the resident population and floating population with R2 of 0.92 and 0.94 respectively, outperforming the baseline methods. We also deploy our system on the Xiamen Open Government Data Platform to provide services to both urban authorities and citizens.

scholarly journals Disaster response and recovery in two informal settlements: A local government perspective

2011 ◽  
Vol 8 (3) ◽  
pp. 606-621 ◽  
Author(s):  
Bethuel Sibongiseni Ngcamu ◽  
Malcolm Alan Henworth Wallis
Keyword(s):  
Urban Areas ◽  
Disaster Response ◽  
Building Materials ◽  
Informal Settlements ◽  
Structured Interviews ◽  
Government Officials ◽  
Governmental Organizations ◽  
Non Governmental Organizations ◽  
Response And Recovery ◽  
The Impact

Informal settlements in urban areas have long been afflicted by disasters and exposed to exploitation by politicians, shacklords, academics, journalists, non-governmental organizations (NGOs), tavern owners and government officials. This problem is caused to some degree by limited land for expansion which has resulted in the creation of highly densified and unplanned, irregular settlements using poor, combustible building materials. The purpose of the article is to investigate whether eThekwini Municipality’s strategies are sufficient to respond to and recover from the impact of disasters. The research was undertaken at the Foreman and Kennedy Road informal settlements located in Clare Estate, under Ward 25, in Durban within eThekwini Municipality in KwaZulu-Natal (refer to Annexure 1). These areas are very important politically as they are densily populated and highly contested between political parties and local resistant’s organizations such as Abahlali baseMjondolo. Questionnaires were self-administered to a sample size of 220 of which 140 respondents completed the questionnaires, thereby generating a response rate of 63.6%. Semi-structured interviews were also conducted with municipal officials. The findings indicate that 44.3% of the victims of disasters received assistance from NGOs and regard civil society as playing an important role after disasters compared to 7.1% of the responding municipal officials.

scholarly journals The impact of urbanization expansion on agricultural land in Ethiopia: A review

2020 ◽  
Vol 8 (4) ◽  
pp. 73-80
Author(s):  
Assefa Ayele ◽  
Kassa Tarekegn
Keyword(s):  
Urban Areas ◽  
Agricultural Land ◽  
Urban Expansion ◽  
Rural Livelihoods ◽  
Vital Role ◽  
Rapid Urbanization ◽  
Economic Resource ◽  
House Construction ◽  
Impact Of Urbanization ◽  
The Impact

AbstractIn a country like Ethiopia where the vast majority of the populations are employed in agriculture, land is an important economic resource for the development of rural livelihoods. Agricultural land in peri-urban areas is, however, transformed into built-up regions through horizontal urban expansion that has an effect on land use value. In recent years Ethiopia has been experiencing rapid urbanization, which has led to an ever-increasing demand for land in peri-urban areas for housing and other nonagricultural activities that pervades agricultural land. There is a high demand for informal and illegal peri-urban land which has been held by peri-urban farmers, and this plays a vital role in the unauthorized and sub-standard house construction on agricultural land. This urbanization has not been extensively reviewed and documented. In this review an attempt has been made to assess the impacts of rapid urbanization on agricultural activities. Urban expansion has reduced the areas available for agriculture, which has seriously impacted upon peri-urban farmers that are often left with little or no land to cultivate and which has increased their vulnerability. Housing encroachments have been observed to be uncontrolled due to a weak government response to the trend of unplanned city expansion. This has left peri-urban farmers exposed to the negative shocks of urbanization because significant urbanization-related agricultural land loss has a positive correlation with grain production decrease. Appropriate governing bodies should control urban development in order to control the illegal and informal spread of urbanization on agricultural land that threatens food production.

Redevelopment of Rural Settlements in Lizhuang Town, Yibin City, China

2015 ◽  
Vol 40 (4) ◽  
pp. 50-54
Author(s):  
Yin Pan ◽  
Tiejun Zhou
Keyword(s):  
Urban Areas ◽  
Architectural Design ◽  
Southwest China ◽  
Design Method ◽  
Living Environment ◽  
Third Party ◽  
Rural Settlements ◽  
Rapid Urbanization ◽  
Traditional Sense ◽  
Urbanization In China

Due to the rapid urbanization in China, the living environment in urban areas improves considerably, while that in rural settlements does not improve remarkably, or even worsens. The purpose of the research is to propose an organizational approach to the improvement of the living environment in the poverty-stricken rural settlements and an architectural design pattern under a variety of requirements in the context of China’s rapid urbanization and socio-economic development in the redevelopment of rural settlements in Yongsheng Village, Lizhuang Town, Yibin City of Sichuan Province in Southwest China. In this redevelopment project, the architects, as the important third party, are not just architects in the traditional sense in that they are involved in the organizational process and architectural design throughout the whole project. The redevelopment project has been completed, and is aimed at providing a scientific redevelopment model and a design method for other rural residents by guiding them in the improvement of their living environment under a variety of restrictions.

Population-level effects of diet, lifestyle, and health environment on obesity and non-communicable diseases in India

2019 ◽  
Author(s):  
Kuhu Joshi ◽  
Devesh Roy ◽  
Lora Iannotti ◽  
Aishwarya Nagar ◽  
Avinash Kishore
Keyword(s):  
Urban Areas ◽  
Population Level ◽  
Overweight And Obesity ◽  
Lifestyle Changes ◽  
Exact Matching ◽  
Rapid Urbanization ◽  
Rural And Urban Areas ◽  
Rural And Urban ◽  
Linear Probability ◽  
The Impact

Abstract Background: Obesity is rising in developing countries like India and is associated with an increase in cardiometabolic problems. Rising incomes, rapid urbanization, and mechanization have induced lifestyle changes like consumption of more obesogenic foods and sedentary habits at work and leisure, contributing to a transition from under- to over-nutrition. This study maps the prevalence of adult (15-49 years) overweight and obesity across regions and socioeconomic groups in India, and estimates its association with lifestyle, health environment, dietary patterns, diabetes, and hypertension.Methods: We employ a combination of 3 latest nationally representative datasets with over 700,000 adults. We use a linear probability regression model to identify the correlates of overweight/obesity and their relative magnitudes. We use intra-household regression to identify differences between men and women and coarsened exact matching to causally estimate the impact of obesity on diabetes and hypertension.Results: Overweight/obesity rates have increased across all states, in rural and urban areas, and for all wealth levels. Women are more likely to be overweight/obese than men, even in the same household. Improved health environment (toilets, piped water, clean cooking fuel), urban jobs, television watching, and processed snacks increase the risk of overweight/obesity. Adults who are overweight/obese have a 5.6% higher risk of diabetes and a 9.7% higher risk of hypertension.Conclusions: Our results underscore the need for policy intervention to reduce the burden of obesity and NCD’s in India.

scholarly journals The Challenges and Strategies of Food Security under Rapid Urbanization in China

2019 ◽  
Vol 11 (2) ◽  
pp. 542 ◽  
Author(s):  
Yong-sheng Wang
Keyword(s):  
Food Security ◽  
Food Consumption ◽  
Urban Areas ◽  
Southern China ◽  
Northern China ◽  
Northern Region ◽  
Grain Production ◽  
Rapid Urbanization ◽  
Agricultural Income ◽  
The Impact

Food security has received wide attention in China for a long time due to the challenges of a huge population and limited farmland area. Under conditions of rapid urbanization, the food scenario has changed, creating major challenges for massive populations in China. This paper intends to reveal the impact of urbanization on food security and to propose strategies for mitigating the threats to it. Total grain production has continuously increased, but most of the grain production has been distributed in the northern region since 2006. Although the per capita rural income has increased significantly since 1980, the agricultural income ratio has consistently declined from 56.13% in 1983 to 26.61% in 2012. A dramatic shift in food consumption away from grain towards meat, poultry, eggs, milk and liquor has been found in both rural and urban areas. The faster agricultural water consumption growth in northern China over southern China helped close the gap. There has been net increase of cultivated land in northern China, whereas southern China has seen a net decrease. The medium- and low-level cultivation ratios of land were 52.84% and 17.69%, respectively, in 2015. This paper concluded that food security in China could be ensured by increasing production and optimizing consumption. It suggested that enhanced grain production capacity, strict water management, and land consolidation engineering as well as agricultural industrialization could be used for maintaining grain production. Food consumption itself can be managed by optimizing resident dietary pattern, reducing food waste, adjusting grain consumption structure and moderating food imports policy.

scholarly journals Response of Near-Surface Meteorological Conditions to Advection under Impact of the Green Roof

Atmosphere ◽  
2019 ◽  
Vol 10 (12) ◽  
pp. 759
Author(s):  
Haochen Tan ◽  
Pallav Ray ◽  
Mukul Tewari ◽  
James Brownlee ◽  
Ajaya Ravindran
Keyword(s):  
Surface Temperature ◽  
Urban Areas ◽  
Green Roof ◽  
Wrf Model ◽  
Single Layer ◽  
Meteorological Conditions ◽  
Rapid Urbanization ◽  
Near Surface ◽  
Budget Analysis ◽  
The Impact

Due to rapid urbanization, the near-surface meteorological conditions over urban areas are greatly modulated. To capture such modulations, sophisticated urban parameterizations with enhanced hydrological processes have been developed. In this study, we use the single-layer urban canopy model (SLUCM) available within the Weather Research and Forecasting (WRF) model to assess the response of near-surface temperature, wind, and moisture to advection under the impact of the green roof. An ensemble of simulations with different planetary boundary layer (PBL) schemes is conducted in the presence (green roof (GR)) and absence (control (CTL)) of green roof systems. Our results indicate that the near-surface temperature is found to be driven primarily by the surface heat flux with a minor influence from the zonal advection of temperature. The momentum budget analysis shows that both zonal and meridional momentum advection during the evening and early nighttime plays an important role in modulating winds over urban areas. The near-surface humidity remains nearly unchanged in GR compared to CTL, although the physical processes that determine the changes in humidity were different, in particular during the evening when the GR tends to have less moisture advection due to the reduced temperature gradient between the urban areas and the surroundings. Implications of our results are discussed.

scholarly journals Improved and promising fecal sludge sanitizing methods: treatment of fecal sludge using resource recovery technologies

2021 ◽  
Author(s):  
Abraham Amenay Zewde ◽  
Zifu Li ◽  
Zhou Xiaoqin
Keyword(s):  
Rural Areas ◽  
Urban Areas ◽  
Resource Recovery ◽  
Rapid Urbanization ◽  
Sanitation Services ◽  
Fecal Sludge ◽  
End Products ◽  
Wastewater Systems ◽  
Treatment Facilities ◽  
The Impact

Abstract The global challenges that face sustainable sanitation services in developing countries are the lack of fecal sludge management; this is due to the rapid urbanization and population growth as it generates enormous quantities of fecal sludge. The extensive use of unimproved sanitation technologies is one of the main reasons for environmental and public health concerns. In dispersed rural areas, isolated slums or in urban areas where a sewerage system is costly, decentralized wastewater system can be used. Therefore centralized management of decentralized wastewater systems along with proper institutional framework treatment of fecal sludge can be used to enhance the economies of developing counties from resource recovery. The discovery of new ways to inactivate pathogens contained in human waste is key in improving access to sanitation worldwide and reducing the impact of conventional waste management processes on the environment. The entire FS management system should include on-site sanitary treatment methods, collection, and transportation of FS, treatment facilities as well as resource recovery or disposal of the treated end products. This review paper addresses the hygienization of fecal sludge and improved treatment technologies for safe reuse or disposal of the end products and the significant economic revenues attained from the treatments of fecal sludge.

scholarly journals Rural areas from demographic perspective. Study case Poland and Romania

2018 ◽  
Vol 6 (1-2) ◽  
pp. 162-167
Author(s):  
Cosmina-Simona Toader ◽  
Malgorzata Zajdel ◽  
Andrea Ana Feher ◽  
Malgorzata Michalcewicz-Kaniowska
Keyword(s):  
Rural Area ◽  
Rural Areas ◽  
Rural Population ◽  
Urban Areas ◽  
Production Systems ◽  
Social Role ◽  
Developed Countries ◽  
Economic Transformation ◽  
The European Union ◽  
The Impact

The rural area is an extremely varied area, agricultural area, the area occupied by forests and grazing the surface of non-agricultural lands (Riviera sea, etc.) and rural agglomerations is a separate entity from the urban areas characterized by a high demographic concentration and vertical and horizontal structures. Being often under the impact of old production systems, characterized by accelerated development and irrational of industry, the countryside has been subject to economic transformation, social and environmental, which mostly resulted in exodus and impoverishment of the rural population. Given this situation, are downright remarkable efforts of developed countries and not only to balance rural-urban ratio, reconciliation and revival of rural areas is kept of unique material and spiritual values. Rural areas are the result of interactions between man and nature, between interdependencies relations, who are specific to diversity of social actions and their natural environment, between the material and spiritual civilization, which for centuries coexist and evolve in a particular national territory. Image of rural area is emphasized by its size, which is the synthetic expression of social activities that are conducted using specific processes and phenomena of nature. All specific features of rural areas (natural, human, material and spiritual), which define the dimension of rural areas, are highlighted by the following components of the system: territorial administrative, demographic, economic and infrastructural. European rural area was and is the subject of extensive restructuring processes that were the result of a complex interaction of social phenomena, economic, sectoral and regional transfers. In circumstances where over half of the 27 Member States of the European Union lives in rural areas, and it occupies over 80% of the total territory, rural areas have considerable potential for growth, with a vital social role. Rural population and surface area occupied and the importance of rural life for a country, make the problem of rural development to gain a national and international importance. In this article the authors presents rural areas as an important part of a country with all its components. The authors elaborated a comparative analysis of rural areas from Poland and Romania from demographic perspective. The analysis was elaborated using indicators like population density, population structure by gender and age, migrations of population, relying on data from national and european statistics.  

scholarly journals Urban Heritage Conservation and Rapid Urbanization: Insights from Surat, India

2020 ◽  
Vol 12 (6) ◽  
pp. 2172 ◽  
Author(s):  
Chika Udeaja ◽  
Claudia Trillo ◽  
Kwasi G.B. Awuah ◽  
Busisiwe C.N. Makore ◽  
D. A. Patel ◽  
...  
Keyword(s):  
Urban Areas ◽  
Skills Training ◽  
Housing Demand ◽  
Heritage Conservation ◽  
Local Policy ◽  
Structured Interviews ◽  
Rapid Urbanization ◽  
Urban Conservation ◽  
Historic Areas ◽  
Indian City

Currently, heritage is challenged in the Indian city of Surat due to diverse pressures, including rapid urbanization, increasing housing demand, and socio-cultural and climate changes. Where rapid demographic growth of urban areas is happening, heritage is disappearing at an alarming rate. Despite some efforts from the local government, urban cultural heritage is being neglected and historic buildings keep being replaced by ordinary concrete buildings at a worryingly rapid pace. Discussions of challenges and issues of Surat’s urban area is supported by a qualitative dataset, including in-depth semi-structured interviews and focus groups with local policy makers, planners, and heritage experts, triangulated by observation and a photo-survey of two historic areas. Findings from this study reveal a myriad of challenges such as: inadequacy of urban conservation management policies and processes focused on heritage, absence of skills, training, and resources amongst decision makers and persistent conflict and competition between heritage conservation needs and developers’ interests. Furthermore, the values and significance of Surat’s tangible and intangible heritage is not fully recognized by its citizens and heritage stakeholders. A crucial opportunity exists for Surat to maximize the potential of heritage and reinforce urban identity for its present and future generations. Surat’s context is representative of general trends and conservation challenges and therefore recommendations developed in this study hold the potential to offer interesting insights to the wider planners and conservationists’ international community. This paper recommends thoughtful integration of sustainable heritage urban conservation into local urban development frameworks and the establishment of approaches that recognize the plurality of heritage values.

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