Search results for "Geographic information system"
showing 10 items of 138 documents
Design storm prediction and hydrologic modeling using a Web-GIS approach on a Free software platform
2005
Abstract The aim of this work has been to implement a set of procedures useful to automatise the evaluation, the design storm prediction and the flood discharge associated with a selected risk level. For this purpose a Geographic Information System has been implemented using Grass 5.0. One of the main topics of such a system is a georeferenced database of the highest intensity rainfalls and their assigned duration recorded in Sicily. This database contains the main characteristics for more than 250 raingauges, as well as the values of intense rainfall events recorded by these raingauges. These data are managed through the combined use of the PostgreSQL and GRASS-GIS 5.0 databases. Some of t…
Assessment of the Pressure Level over Lentic Waterbodies through the Estimation of Land Uses in the Catchment and Hydro-Morphological Alterations: Th…
2021
The features of lentic waterbodies largely depend on the surrounding environment. Mediterranean coastal lagoons have been historically altered, with their catchment being highly modified for agricultural, livestock, or urban uses. Changes in land uses induce pressures that impact the waterbodies and alter their ecological status. The objectives of this paper were: to develop a methodological approach (LUPLES: Land Uses for estimating Pressure Levels to approach the Ecological Status), to quantify the main pressures on the waterbodies and to forecast the possible impacts of these pressures on their ecological status. Corine-Land Cover maps and Geographic Information System technics were used…
Map-based assessment of older adults’ life space: validity and reliability
2020
Background Map-based tools have recently found their way into health-related research. They can potentially be used to quantify older adults’ life-space. This study aimed to evaluate the validity (vs. GPS) and the test-retest reliability of a map-based life-space assessment (MBA). Methods Life-space of one full week was assessed by GPS and by MBA. MBA was repeated after approximately 3 weeks. Distance-related (mean and maximum distance from home) and area-related (convex hull, standard deviational ellipse) life-space indicators were calculated. Intraclass correlations (MBA vs. GPS and test-retest) were calculated in addition to Bland-Altman analyses (MBA vs. GPS). Results Fifty-eight older …
Geographic Information System of Primary Carbon Deposit of Mangrove Forest in Merauke District, Indonesia
2020
Emission factors with increasing carbon dioxide (CO2) originating from various human activities are one of the causes of global climate change. The mangrove forest is a type of plant that has a great ability to absorb carbon in the atmosphere and store it in biomass through photosynthesis. Merauke Regency has 20 separate parts based on regional administration, but primary Mangrove forests are only found in ten regions (district). The results of research carried out using geographic information systems (GIS) in processing primary Mangrove forest data based on 2016 land cover map data in Merauke district, the area of primary mangrove forest reaches 184.402 ha, which is spread in various regio…
Respuesta docente frente a la pandemia de la COVID-19: el uso de Blackboard y Flipped Teaching en la asignatura de Metodología Arqueológica
2020
[ES] El sistema educativo universitario se basa en gran medida en clases presenciales. Un evento inesperado como la pandemia de la COVID-19, que estalló durante los primeros meses del 2020, llevó a las autoridades a declarar el estado de alerta y a tomar, entre otras medidas, la interrupción de la actividad docente presencial. El profesorado universitario tuvo que adaptar la actividad docente a un sistema, para muchos, novedoso: la docencia en línea. Este trabajo tiene como objetivo mostrar los instrumentos y las estrategias empleadas para dar una rápida respuesta a una situación de emergencia. Nuestro caso se centra en la enseñanza de una asignatura de tercer curso del Grado de Historia en…
Moving in the Anthropocene: Global reductions in terrestrial mammalian movements
2018
Made available in DSpace on 2018-11-26T17:44:52Z (GMT). No. of bitstreams: 0 Previous issue date: 2018-01-26 Robert Bosch Foundation Animal movement is fundamental for ecosystem functioning and species survival, yet the effects of the anthropogenic footprint on animal movements have not been estimated across species. Using a unique GPS-tracking database of 803 individuals across 57 species, we found that movements of mammals in areas with a comparatively high human footprint were on average one-half to one-third the extent of their movements in areas with a low human footprint. We attribute this reduction to behavioral changes of individual animals and to the exclusion of species with long-…
AMUN: An Object Oriented Model For Cooperative Spatial Information Systems
1997
International audience; The diversity of spatial information systems promote the need to integrate heterogeneous spatial or geographic information systems (GIS) in a cooperative environment. We present an on going research project, called ISIS (Interoperable Spatial Information System), which aims to build an environment to support interoperability of GIS by interconnecting spatial data repositories and spatial processing resources. Our solution combines techniques from traditional interoperable information systems, spatial data modeling and distributed object oriented databases. While object oriented data modeling impact has been studied in spatial databases, research in model for distribu…
Proposal of a Geographic Information System for modeling zoonotic fasciolosis transmission in the Andes
2004
ABSTRACT The present study describes the basis for the development of a Geographic Information System(GIS) for conducting an epidemiological analysis of human and animal fasciolosis in the Andes. Themethodology proposes the use of various data bases - those derived from epidemiologicalmutidisciplinary studies and environmental data derived from terrestrial stations and remote sensing. Key words : Fasciola hepatica, fasciolosis transmission, Andes, geographic information system,model. INTRODUCTIONOver the last decade, the importance of humanand animal fasciolosis in various south Americancountries has been emphasized in the scientificliterature 1-5 ; indeed, human infection by Fasciolahepati…
Visualization of the Renewable Energy Resources
2016
The methods of the renewable energy resources visualization are analysed in this work, the examples of the systems and possible architecture of the renewable energy monitoring systems of the Republic of Kazakhstan are considered. Successful practices are analysed, the leading scientific organization in the field of green energy are considered, a comparative analysis of geographic information systems and data sources in the field of green energy is performed. Possible software architecture of the system based on 3M paradigm of geographic information system (multilayer views, multilayer architecture and multi-agent interaction) is considered.
Strategies investigation in using artificial neural network for landslide susceptibility mapping: application to a Sicilian catchment
2013
Susceptibility assessment of areas prone to landsliding remains one of the most useful approaches in landslide hazard analysis. The key point of such analysis is the correlation between the physical phenomenon and its triggering factors based on past observations. Many methods have been developed in the scientific literature to capture and model this correlation, usually within a geographic information system (GIS) framework. Among these, the use of neural networks, in particular the multi-layer perceptron (MLP) networks, has provided successful results. A successful application of the MLP method to a basin area requires the definition of different model strategies, such as the sample selec…