scholarly journals THE APPLICATION OF GIS IN THE MANAGEMENT OF FLOODING INFORMATION IN THE HO CHI MINH CITY AREA

2011 ◽  
Vol 14 (3) ◽  
pp. 50-61
Author(s):  
Duc Trong Tran

GIS with its capacity for storing and displaying spatial data can be an excellent tool for the management of flooding problems in HCM city. The system can visualize a the overall flooding status of the city, for example i) on a specific rainy day ‘x’ in the past, the locations of flooded areas, their respective depths and durations; ii) how flooding developed at a certain location ‘y’ in the city over the last several years; iii) or the most serious flooding areas of the city, etc. An advantage of the system is its capability to link flooding information with existing related geographic, landmark and drainage systems. This article presents such a system in managing flooding information. The application is developed using the vb.net program and ArcObject library. The system is built to run as independent software on the platform of ESRI ArcGIS Engine 9.2. The application has been piloted effectively for a set of sample data of HCMC. Initial results show this is a promising system to support management of information flooding in Ho Chi Minh City.

Earth ◽  
2021 ◽  
Vol 2 (1) ◽  
pp. 151-173
Author(s):  
Md. Rezuanul Islam ◽  
Debasish Roy Raja

In recent years, rainfall-induced waterlogging has become a common hazard in the highly urbanized coastal city of Chattogram, Bangladesh, resulting in a high magnitude of property damage and economic loss. Therefore, the primary objective of this research was to prepare a waterlogging inventory map and understand the spatial variations of the risk by means of hazard intensity, exposure, and vulnerability of waterlogging. In this research, the inventory map and factors influencing waterlogging hazards were determined from a participatory survey, and other spatial data, including land elevation, population, and structural data, were collected from secondary sources. The analytical hierarchy process was applied to measure the hazard intensity, and the exposure and vulnerability were estimated by overlaying the spatial data onto the hazard intensity map. A total of 58 locations were identified as waterlogging affected, which covered ~8.42% of the city area. We showed that ~3.03% of the city area was greatly vulnerable to waterlogging in terms of their social, infrastructure, critical facilities, economic, and environmental vulnerabilities. The obtained waterlogging risk index map suggested that ~2.71% of the study area was at very high risk, followed by moderate (~0.15%), low (~3.89%), and very low (~1.67%). The risk analysis presented in this study was a simple method that can be applied to assess the relative risk of waterlogging in different regions, and the results were applicable to the prevention and mitigation of waterlogging for Chattogram City.


2021 ◽  
Vol 13 (16) ◽  
pp. 3264 ◽  
Author(s):  
Shuang Li ◽  
Zhongqiu Sun ◽  
Yafei Wang ◽  
Yuxia Wang

Studying urban expansion from a longer-term perspective is of great significance to obtain an in-depth understanding of the process of urbanization. Remote sensing data are mostly selected to investigate the long-term expansion of cities. In this study, we selected the world-class urban agglomeration of Beijing-Tianjin-Hebei (BTH) as the study area, and then discussed how to make full use of multi-source, multi-category, and multi-temporal spatial data (old maps and remote sensing images) to study long-term urbanization. Through this study, we addressed three questions: (1) How much has the urban area in BTH expanded in the past 100 years? (2) How did the urban area expand in the past century? (3) What factors or important historical events have changed the development of cities with different functions? By comprehensively using urban spatial data, such as old maps and remote sensing images, geo-referencing them, and extracting built-up area information, a long-term series of urban built-up areas in the BTH region can be obtained. Results show the following: (1) There was clear evidence of dramatic urban expansion in this area, and the total built-up area had increased by 55.585 times, from 126.181 km2 to 7013.832 km2. (2) Continuous outward expansion has always been the main trend, while the compactness of the built-up land within the city is constantly decreasing and the complexity of the city boundary is increasing. (3) Cities in BTH were mostly formed through the construction of city walls during the Ming and Qing dynasties, and the expansion process was mostly highly related to important political events, traffic development, and other factors. In summary, the BTH area, similarly to China and most regions of the world, has experienced rapid urbanization and the history of such ancient cities should be further preserved with the combined use of old maps.


Author(s):  
Pham Thi Anh ◽  
Nguyen Thi Bao Ngoc

Urban flooding has become a regular phenomenon in many towns and cities in the world over the past years. Flooding in urban areas in Ho Chi Minh City poses serious challenges not only by affecting large numbers of people and properties in urban areas but also directly hindering the economic growth of the city. Despite the huge technical effort to improve the city's drainage system, which is necessitated by phenomenal growth of the city and the challenges of climate change and land subsidence, it is impossible to put and end to flooding. The human factor appears an important element in the flooding problem and the efforts of flood reduction. In this study the emphasis was laid on the issue of inappropriate garbage disposal which leads to obstruction of drainage systems. As a part of a well-planned strategy an interactive survey was conducted in about 820 households in flooding areas. The survey focused on awareness and behavior of public garbage disposal of households living in flooded areas. People have an understanding of the causes of flooding, and have a sense of environmental protection, they can contribute to reducing flooding. In addition to technological solutions, community awareness, solutions for management and sanctioning are necessary.


Author(s):  
Vu Van Thuan

Cooperatives are a major form of collective economy – an important economic component, the basis for the development of the national economy. The development of the collective economy has become a cross-cutting and consistent policy of The Communist Party and the State of Vietnam in the transition period to socialism. Since 1986, clearly defining that role and its importance, the Communist Party Committee of Ho Chi Minh City proactively had supportive policies, at initial stage, in terms of facilities, legal matters and change of business production direction. In the first ten years after the renovation, the development of the cooperative faced many difficulties due to the change of policy and mechanism from the subsidized centrally planned economy to the market economy. Since 1996, when the Law on Cooperatives came into existence, it created a legal basis, contributing to promoting the development of cooperatives in many economic fields. On that basis, Ho Chi Minh City paid more attention to the development of cooperatives. Directives and specialized resolutions on cooperatives were formulated, and specific policies on cooperatives were formed. As a result, over the past 30 years, cooperatives have gradually recovered and developed in many economic fields, becoming an economic component in the economic structure of the city. In addition, the cooperatives also contribute significantly to creating jobs, increasing incomes and improving people's lives in the city. In the current context, cooperatives in the City need to innovate more strongly to adapt and to develop.


2019 ◽  
Vol 12 (3) ◽  
pp. 257
Author(s):  
Reginaldo Christophori Lake ◽  
Yuliana Bhara Mberu ◽  
Avitu Diaz

Abstract: This research focuses on the old city-area of Kupang as a historical area formed based on the typology and morphology of the city of Kupang in the past. In the study of the existence of the city-old Kupang is associated with aspects of the function and development of the city. The problems studied are what physical elements exist in the old city area that needs to be emphasized in order to be able to support the activities and functions of the old city-area of Kupang and its preservation. The purpose of revealing the physical elements of the old city of Kupang is to become a concept or direction for the design of the morphology of the city of Kupang on an ongoing basis. The results of the study indicate that changes in the Kupang city-old region are influenced by the elements forming the urban area that are in line with the socio-cultural and economic development of the community in the region.Keywords: physical elements, morphology, heritage, city of KupangAbstrak: Penelitian ini berfokus pada kawasan kota-lama Kupang sebagai kawasan bersejarah yang terbentuk berdasarkan tipologi dan morfologi kota Kupang tempo dulu. Dalam kajian keberadaan kota-lama Kupang dikaitkan dengan aspek fungsi dan perkembangan kota. Permasalahan yang dikaji adalah apa saja elemen fisik yang terdapat pada kawasan kota-lama yang perlu dipertegas agar mampu mendukung kegiatan dan fungsi kawasan kota-lama Kupang dan pelestariannya. Tujuan dari mengungkapkan elemen fisik dari kota-lama Kupang dijadikan sebuah konsep atau arahan desain morfologi kota Kupang secara berkelanjutan. Hasil penelitian menunjukkan bahwa perubahan pada kawasan kota-lama Kupang dipengaruhi oleh elemen-elemen pembentuk kawasan kota yang sejalan dengan perkembangan sosial budaya dan ekonomi masyarakat dalam kawasan.Kata Kunci: elemen fisik, morfologi, kota-lama, kota Kupang


2014 ◽  
Vol 29 (2) ◽  
Author(s):  
Dayne Walling

AbstractThe City of Flint, Michigan, USA has experienced extreme population and economic variability in the past one hundred and fifty years. The City of Flint developed three comprehensive or master plans in order to assess available data, make projections and propose recommendations. The ways in which each plan proved to contain accuracies and failures is instructive for the practices of historical statistical methods and urban planning, particularly as it relates to spatial data. The three plans will be considered in three main sections: planning for population growth (1920), planning for regional rationalization (1960), and planning for a flexible future (2013). Population projections, residential density patterns, and economic and employment data will be reviewed and compared against the planning recommendations and realities. The relationship between statistics and spatial analysis is examined. Discussion is included on ways data and statistical analysis can be utilized for public decision-making and assist with governing.


2021 ◽  
Vol 6 (3) ◽  
Author(s):  
Phung The Anh

Ho Chi Minh City is Vietnam's the largest city with potentials, strengths on the development of industry, construction and service. The proportion of these sectors accounts for more than 99% of the city's GDP structure. Moreover, the city also has a large rural area with 05 suburban districts. In the past years, the city has also focused on strong investment to build and develop rural areas, contributing to changing the face of rural areas of the city; and simultaneously narrowing the gap between the urban and suburban areas. Since the day of national reunification up to now, Ho Chi Minh City has focused resources to invest in developing rural areas under the policy of new rural construction of the Communist Party of Vietnam, especially investment in building a synchronous and completed socio-economic infrastructure system, contributing to rural development, increasing incomes and improving people's lives. <p> </p><p><strong> Article visualizations:</strong></p><p><img src="/-counters-/edu_01/0797/a.php" alt="Hit counter" /></p>


2021 ◽  
pp. 41-49
Author(s):  
Grygoriy Denysyk ◽  
Yuriy Yatsentyuk ◽  
Volodymyr Volovyk ◽  
Zhanna Barchuk

The purpose of the study is to identify the peculiarities of the local econetwork of Vinnytsia for the sustainable urban development. Methods: field research (key, area and route), literary-cartographic, analytical-cartographic analysis, collecting and processing of statistical information, theoretical generalization and systematization of facts, analysis, abstraction, analogy, synthesis. Results. 30 key territories, which occupy 15.9% of the city area, are distinguished in the structure of Vinnytsia econetwork. According to the peculiarities of vegetation and modern landscapes, all key territories are grouped into the following groups: forest, forest-meadow, forest-swamp, pond, garden-park and cemetery. Forest key territories that correspond to the background landscapes in the past are predominant (81.7% of the area). Key territories are joined by two national and twenty five local ecological corridors, which cover 12% of the city area. River-valley ecocorridors prevail among them in area and length while street-road ecological corridors prevail in their quantity. Buffer areas, that cover 4.8% of the city’s territory, are designed around key territories and ecological corridors. Thirteen recovery territories, which occupy 0.9% of Vinnytsia area, are potential for increasing the area of key territories and ecocorridors in the future. In perspective, seven interactive elements, projected mainly by stream valleys, occupying 0.6% of the city territory, may pass into the category of ecocorridors. The novelty of the study is that for the first time: since the change of Vinnytsia’s borders in 2015, the city econetwork project has been developed; peculiarities of interactive elements and ecotechnical junctions are identified and specificated; peculiarities of the landscape complexes of the territory were taken into account while justifying the choice of structural elements of the econetwork.


2017 ◽  
Vol 5 (2) ◽  
pp. 109-120
Author(s):  
Cecília Avelino Barbosa

Place branding is a network of associations in the consumer’s mind, based on the visual, verbal, and behavioral expression of a place. Food can be an important tool to summarize it as it is part of the culture of a city and its symbolic capital. Food is imaginary, a ritual and a social construction. This paper aims to explore a ritual that has turned into one of the brands of Lisbon in the past few years. The fresh sardines barbecued out of doors, during Saint Anthony’s festival, has become a symbol that can be found on t-shirts, magnets and all kinds of souvenirs. Over the year, tourists can buy sardine shaped objects in very cheap stores to luxurious shops. There is even a whole boutique dedicated to the fish: “The Fantastic World of Portuguese Sardines” and an annual competition promoted by the city council to choose the five most emblematic designs of sardines. In order to analyze the Sardine phenomenon from a city branding point of view, the objective of this paper is to comprehend what associations are made by foreigners when they are outside of Lisbon. As a methodological procedure five design sardines, were used of last year to questioning to which city they relate them in interviews carried in Madrid, Lyon, Rome and London. Upon completion of the analysis, the results of the city branding strategy adopted by the city council to promote the sardines as the official symbol of Lisbon is seen as a Folkmarketing action. The effects are positive, but still quite local. On the other hand, significant participation of the Lisbon´s dwellers in the Sardine Contest was observed, which seems to be a good way to promote the city identity and pride in their best ambassador: the citizens.


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