scholarly journals GEOPROCESSAMENTO APLICADO AO ESTUDO DE VULNERABILIDADE DO SOLO DA BACIA HIDROGRÁFICA DO CÓRREGO GUARIBAS EM UBERLÂNDIA-MG

2017 ◽  
Vol 13 (2) ◽  
Author(s):  
Erich Vectore Pavanin ◽  
Maria Lígia Chuerubim ◽  
Bruno De Oliveira Lázaro

RESUMO: Este trabalho apresenta um estudo acerca da aplicação de técnicas de geoprocessamento na definição e caracterização dos graus de vulnerabilidade geotécnica do solo na Bacia Hidrográfica do Córrego Guariba em Uberlândia – MG. Observou-se, na área de estudo, ser necessário o estabelecimento de ferramentas de planejamento e gestão territorial que possibilitassem analisar e verificar o impacto da ocupação antrópica nas margens de córregos urbanos frente à ocorrência de processos erosivos. Desta maneira, o uso de geotecnologias, como o Sensoriamento Remoto, inseriu-se neste tipo de trabalho como sendo um mecanismo indispensável ao planejamento urbano, dado possibilitar, mediante a utilização de imagens de satélite e ferramentas de processamento digital, o mapeamento e caracterização geotécnica das bacias hidrográficas localizadas no Brasil. Nesta perspectiva, foram utilizadas neste trabalho imagens de softwares livres do ano de 2013, bem como as ferramentas de processamento digital de imagens SPRINGS e AUTOCAD, com o intuito de identificar as classes de uso e ocupação do solo da área de estudo, a declividade da região, os tipos de materiais inconsolidados (solo) e a profundidade do nível d’água local. A partir do estabelecimento destes quatro planos de informação, utilizou-se o método de Análise de Multicritérios, denominado também AHP (Analystic Hierarchy Process), para correlacionar os dados obtidos e elaborar o mapa de vulnerabilidade do solo. Assim, este trabalho contribui para promover o diagnóstico da vulnerabilidade do solo à erosão na Bacia Hidrográfica do Córrego Guaribas em Uberlândia-MG e para a utilização deste dado como ferramenta de suporte no planejamento urbano sustentável.
 
 ABSTRACT: This paper presents a study on the application of GIS techniques to define and characterize the degree of geotechnical soil vulnerability in Guaribas Stream Water Basin in Uberlândia - MG. It was observed in the study area, be necessary to establish planning and land use management tools that make possible to analyze and verify the impact of human occupation on the banks of urban streams across the occurrence of erosion. Thus, the use of geo-technologies, such as remote sensing, inserted in this type of work as an indispensable mechanism to urban planning, as possible, through the use of satellite images and digital processing tools, mapping and geotechnical characterization river basins located in Brazil. In this perspective, we were used in this study of 2013 years of free software images, as well as the digital processing tools SPRINGS and AUTOCAD images, in order to identify the classes of use and land cover in the study area, the slope of the region, the types of unconsolidated material (ground) level and the depth d local water. From the establishment of these four planes of information, we used the Multicriteria Analysis method, also called AHP (Analystic Hierarchy Process) to correlate the data and prepare the vulnerability map of erosion in the catchment area of Guaribas Stream. In that way, this work helps to promote the diagnosis of soil vulnerability to erosion in the Basin Guaribas stream in Uberlândia-MG and to use this data as a support tool for sustainable urban planning.

Author(s):  
Jadhav Sachin Jibhau

Abstract: Urban planning is a tool that helps in managing the things that need a spatial approach and it also helps in conducting the other activities. While planning the urban cities the past and recent condition should also be taken into account for better result. But each and every one is concern about the growth and development, though tourism includes different sectors and have different criteria according to the place, but the impact factors are almost common in all the aspects of tourism. Tourism cities have tremendous potential of research in their filed, but the problem should be identified specifically and proper methodology should be used during their process the government policies should also be taken into account and based on that solution should be plan of such places. In short recognized the impacts and work on it and according to that the urban planning should be done to boost tourism sector to next level. Once the impacts are taken out and work on such impact are carried out than the development of such places will automatically goes on increasing and it help to keep the environment and that specific place neat and clean and also help it to grow it original and natural beauty. Nashik city in Maharashtra state is one of the oldest city which have most important historical ,culturally and religious importance and one of the city who hold kumbha mela and most of the people visit this city throughout the year and if the impacts are solved at it basic and ground level than the development may rapidly increase and gives better life to the surrounding environment.


2017 ◽  
Vol 7 ◽  
Author(s):  
Pilar García Rodríguez ◽  
Beatriz Álvarez García

Soil sealing (permanent covering of an area by impermeable artificial material) is one of the most serious problems affecting ecosystems in Western Europe. Numerous studies have analysed this issue from an ecological approach, but very few take into account its impact on one of soil’s essential functions, namely the preservation of archaeological sites. Spanish laws on historic heritage (1985) and environmental impact (2013) have tackled the matter by legislating measures for the preservation of heritage. Furthermore, in 1992 Spain signed the Valletta Treaty (the European Convention on the Protection of the Archaeological Heritage) of the Council of Europe, and further ratified it in 2011. Historians, archaeologists and soil scientists should respond to this threat using a multidisciplinary approach. The present study analyses the impact that soil sealing has had on the Roman city of Complutum, located on the Henares River plain (Madrid, España) on highly fertile Fluvisols and Calcisols. One of the aims of this study is to show that the combined use of aerial photos and satellite images provides a continuously updated file of urban development processes and therefore makes it possible to foresee the impact on archaeological sites. At present, medium and high spatial resolution images (Spot and Landsat satellites) can be obtained free of charge and digital processing makes it possible to map any variations in these sites. Another aim of the study is to analyse the importance of soil type and quality in establishing settlements in corridors which have served as important communication routes. There is a greater likelihood of urban planning and development processes in the immediate surroundings of these routes over the years, implying that it is highly probable that pre-existing sites will be destroyed.</p><div> </div>


Author(s):  
Ben Davies ◽  
John Andrews

Elevated summer temperatures are a disrupting factor on the rail network. Due to the risk of a track buckling under thermal expansion forces, geometry maintenance must be delayed during heatwaves, leading to an overall decreased network availability and reliability. Track asset management support tools are used to plan and schedule a variety of maintenance activities, with tamping and stoneblowing being the primary activities for geometry maintenance. No management tools seen in the literature consider the influences of weather on the scheduling and delivery of maintenance. This paper describes a Petri net modelling approach to railway track asset management. This is demonstrated to be a highly flexible method able to capture the complexities of degradation, inspection, and maintenance, and predict the evolution of track geometry quality over time. Different maintenance strategies are tested, varying the degradation thresholds, inspection intervals, policy decisions, and maintenance response times. Excessively hot weather is introduced as an inhibiting factor for all maintenance activities, resulting in extended periods where interventions are delayed. Simulation results show that frequent inspection and timely maintenance scheduling strategies could be followed to attain a highly performing and resilient track system. This asset management support tool could be added to the suite used by the rail industry, providing guidance on maintenance policy through a summer season where heatwave disruptions are expected.


2021 ◽  
Vol 10 (1) ◽  
pp. 1-20
Author(s):  
Rosa Thoneick

The present contribution offers an assessment of the development and implementation of the digital participation system in Hamburg, Germany. The system utilises open and public planning data within a web-based interface and a physical decision-support tool. These technologies are integrated in urban planning processes, namely through citizen participation and citizen engagement. The research presented in this paper assesses the impact of the digital participation system by evaluating three key aspects shared with traditional citizen-participation methods: (1) the selection of participants, (2) the modes of communication used, and (3) the authority and power. The assessment is based on the analysis of data collected from interviews and a usability and user-experience study. For the analysis and comparison of DIPAS to other participation formats, this paper introduces a visual assessment tool, the participation cube. The digital participation system is found to have diversified the selection of participants and improved collaboration with the general public. However, it did not facilitate higher decisional power, due to the lack of legal adjustments. The author argues that new forms of participation should not only rely on digital tools, but should also engage with the institutional and procedural context in which participation occurs. Several strategies are suggested to support an inter-disciplinary approach at the intersection of technical tools and traditional planning practices. These hybrid strategies would allow the seamless integration of citizen contributions into the creation of urban development plans.


2020 ◽  
Vol 14 (1) ◽  
pp. 321-335
Author(s):  
Marco Vona

Background: Seismic risk mitigation is an important issue in earthquake-prone countries, and needs to be solved in those complex communities governed by complex processes, where urban planning, socioeconomic dynamics, and, often, the need to preserve cultural assets are present simultaneously. In recent years, due to limited financial resources, mitigation activities have often been limited to post-earthquake events, and only a few in periods of inactivity, particularly in urban planning. At this point, a significant change in point of view is necessary. Methods: The seismic risk mitigation (and more generally, natural risk mitigation) must be considered as the main topic in urban planning and in the governance of communities. In fact, in several recent earthquakes, significant socioeconomic losses have been caused by the low or lack of resilience of the communities. This is mainly due to the high vulnerability of private buildings, in particular, housing units. Results: Therefore, in recent years, several studies have been conducted on the seismic resilience of communities. However, significant improvements are still needed for the resilience assessment of the housing stock, both qualitatively and quantitatively. In this study, which is applied to the housing system, a proposal regarding a change in urban planning and emergency management tools based on the concept of resilience is reported. As a first application, a case study in Italy is considered. Conclusion: The proposal is focused on defining and quantifying the improvement of the resilience of the communities and this must be obtained by modifying the current Civil Protection plan. New tools are based on a new resilience community plan by encompassing urban planning tools, resilient mitigation strategies, and consequently, emergency management planning.


Author(s):  
Oskar Wiśniewski ◽  
Wiesław Kozak ◽  
Maciej Wiśniewski

AbstractCOVID-19, which is a consequence of infection with the novel viral agent SARS-CoV-2, first identified in China (Hubei Province), has been declared a pandemic by the WHO. As of September 10, 2020, over 70,000 cases and over 2000 deaths have been recorded in Poland. Of the many factors contributing to the level of transmission of the virus, the weather appears to be significant. In this work, we analyze the impact of weather factors such as temperature, relative humidity, wind speed, and ground-level ozone concentration on the number of COVID-19 cases in Warsaw, Poland. The obtained results show an inverse correlation between ground-level ozone concentration and the daily number of COVID-19 cases.


2007 ◽  
Vol 11 (6) ◽  
pp. 1811-1823 ◽  
Author(s):  
P. Cau ◽  
C. Paniconi

Abstract. Quantifying the impact of land use on water supply and quality is a primary focus of environmental management. In this work we apply a semidistributed hydrological model (SWAT) to predict the impact of different land management practices on water and agricultural chemical yield over a long period of time for a study site situated in the Arborea region of central Sardinia, Italy. The physical processes associated with water movement, crop growth, and nutrient cycling are directly modeled by SWAT. The model simulations are used to identify indicators that reflect critical processes related to the integrity and sustainability of the ecosystem. Specifically we focus on stream quality and quantity indicators associated with anthropogenic and natural sources of pollution. A multicriteria decision support system is then used to develop the analysis matrix where water quality and quantity indicators for the rivers, lagoons, and soil are combined with socio-economic variables. The DSS is used to assess four options involving alternative watersheds designated for intensive agriculture and dairy farming and the use or not of treated wastewater for irrigation. Our analysis suggests that of the four options, the most widely acceptable consists in the transfer of intensive agricultural practices to the larger watershed, which is less vulnerable, in tandem with wastewater reuse, which rates highly due to water scarcity in this region of the Mediterranean. More generally, the work demonstrates how both qualitative and quantitative methods and information can assist decision making in complex settings.


2021 ◽  
Vol 13 (15) ◽  
pp. 8441
Author(s):  
Michal Hrivnák ◽  
Peter Moritz ◽  
Marcela Chreneková

The COVID-19 pandemic has exposed new aspects of sustainable entrepreneurship and the resilience of SMEs in the conditions of individual countries. This empirical study contributes to entrepreneurship sustainability literature and business resilience literature by estimating the impact of various utilized internal crisis management tools and state compensation measures on retaining the pre-crisis levels of employment after two waves of the pandemic on the conditions of a V4 country. The study adopts an econometric approach towards assessing the influence of key factors of mitigating the problems caused by the pandemic, and the results suggest a crucial role of digitalization, internal policies optimizing variable costs, and utilization of direct governmental supportive measures to compensate for restrictions in force for employment retention in knowledge-intensive SMEs. According to the results, knowledge-intensive SMEs appears to have increased resilience towards economic shocks due to the capability to swiftly change the management of ventures to adapt to a crisis.


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