WorldWideScience

Sample records for analysis geographic information

  1. Modeling uncertainty in geographic information and analysis

    Institute of Scientific and Technical Information of China (English)

    2008-01-01

    Uncertainty modeling and data quality for spatial data and spatial analyses are im-portant topics in geographic information science together with space and time in geography,as well as spatial analysis. In the past two decades,a lot of efforts have been made to research the uncertainty modeling for spatial data and analyses. This paper presents our work in the research. In particular,four progresses in the re-search are given out: (a) from determinedness-to uncertainty-based representation of geographic objects in GIS; (b) from uncertainty modeling for static data to dy-namic spatial analyses; (c) from modeling uncertainty for spatial data to models; and (d) from error descriptions to quality control for spatial data.

  2. Air Force geographic information and analysis system

    Energy Technology Data Exchange (ETDEWEB)

    Henney, D.A.; Jansing, D.S.; Durfee, R.C.; Margle, S.M.; Till, L.E.

    1987-01-01

    A microcomputer-based geographic information and analysis system (GIAS) was developed to assist Air Force planners with environmental analysis, natural resources management, and facility and land-use planning. The system processes raster image data, topological data structures, and geometric or vector data similar to that produced by computer-aided design and drafting (CADD) systems, integrating the data where appropriate. Data types included Landsat imagery, scanned images of base maps, digitized point and chain features, topographic elevation data, USGS stream course data, highway networks, railroad networks, and land use/land cover information from USGS interpreted aerial photography. The system is also being developed to provide an integrated display and analysis capability with base maps and facility data bases prepared on CADD systems. 3 refs.

  3. Usability Analysis of Geographic Information System Software: A Case Study

    Directory of Open Access Journals (Sweden)

    Mehedi Masud

    2009-07-01

    Full Text Available A Geographical Information System (GIS is a computer system capable of creating, capturing and storing, analyzing, managing, and displaying geographically referenced information. A GIS tool offers interactive user interfaces to submit queries, analyze and edit data. The usability criterion of a GIS tool is an important factor for analyzing geographical information. This paper presents a methodology for evaluating the usability of a GIS tool and proposes some guidelines to find out the severity ratings of problems in a GIS tool. The paper also demonstrates how to scrutinize the usability to discover potential problems using a prototype user interface. Based on the study, experience, and observation, this paper also proposes a number of general usability evaluation guidelines for GIS tools.

  4. Catchment delineation and morphometric analysis using geographical information system.

    Science.gov (United States)

    Kumar, Manoj; Kumar, Rohitashw; Singh, P K; Singh, Manjeet; Yadav, K K; Mittal, H K

    2015-01-01

    The geographical information system (GIS) has emerged as an efficient tool in delineation of drainage patterns of watershed planning and management. The morphometric parameters of basins can address linear, areal and relief aspects. The study deals with the integrated watershed management of Baliya micro-watersheds, located in the Udaipur district of Rajasthan, India. Morphometric analysis in hydrological investigation is an important aspect and it is inevitable in the development and management of drainage basins. The determination of linear, areal and relief parameters indicate fairly good significance. The low value of the bifurcation ratio of 4.19 revealed that the drainage pattern has not been distorted by structural disturbance. The high value of the elongation ratio (0.68) compared to the circulatory ratio (0.27) indicates an elongated shape of the watershed. The high value of drainage density (5.39 km/km(2)) and stream frequency (12.32) shows that the region has impermeable subsoil material under poor vegetative cover with a low relief factor. The morphometric parameters of relief ratio (0.041) and relative relief (0.99%) show that the watershed can be treated using GIS techniques to determine the morphometric presence of dendritic drainage pattern, with a view to selecting the soil and water conservation measures and water harvesting.

  5. Applications of Geographic Information System (GIS) analysis of Lake Uluabat.

    Science.gov (United States)

    Hacısalihoğlu, Saadet; Karaer, Feza; Katip, Aslıhan

    2016-06-01

    Lake Uluabat is one of the most important wetlands in Turkey because of its rich biodiversity, lying on a migratory bird route with almost all its shores being covered by submerged plants. The lake has been protected by the Ramsar Convention since 1998. However, the Lake is threatened by natural and anthropogenic stressors as a consequence of its location. Geographic Information System (GIS) analysis is a tool that has been widely used, especially for water quality management in recent years. This study aimed to investigate the water quality and determined most polluted points using GIS analysis of the lake. Temperature, pH, dissolved oxygen, chemical oxygen demand, Kjeldahl nitrogen, total phosphorus, chlorophyll-a, arsenic, boron, iron, and manganese were monitored monthly from June 2008 to May 2009, with the samples taken from 8 points in the lake. Effect of pH, relation of temperature, and Chl-a with other water quality parameters and metals are designated as statistically significant. Data were mapped using ArcGIS 9.1 software and were assessed according to the Turkish Water Pollution Control Regulations (TWPCR). The research also focused on classifying and mapping the water quality in the lake by using the spatial analysis functions of GIS. As a result, it was determined that Lake Uluabat belonged to the 4th class, i.e., highly polluted water, including any water of lower quality. A remarkable portion of the pollution in the water basin was attributed to domestic wastewater discharges, industrial and agricultural activities, and mining. PMID:27154052

  6. Applications of Geographic Information System (GIS) analysis of Lake Uluabat.

    Science.gov (United States)

    Hacısalihoğlu, Saadet; Karaer, Feza; Katip, Aslıhan

    2016-06-01

    Lake Uluabat is one of the most important wetlands in Turkey because of its rich biodiversity, lying on a migratory bird route with almost all its shores being covered by submerged plants. The lake has been protected by the Ramsar Convention since 1998. However, the Lake is threatened by natural and anthropogenic stressors as a consequence of its location. Geographic Information System (GIS) analysis is a tool that has been widely used, especially for water quality management in recent years. This study aimed to investigate the water quality and determined most polluted points using GIS analysis of the lake. Temperature, pH, dissolved oxygen, chemical oxygen demand, Kjeldahl nitrogen, total phosphorus, chlorophyll-a, arsenic, boron, iron, and manganese were monitored monthly from June 2008 to May 2009, with the samples taken from 8 points in the lake. Effect of pH, relation of temperature, and Chl-a with other water quality parameters and metals are designated as statistically significant. Data were mapped using ArcGIS 9.1 software and were assessed according to the Turkish Water Pollution Control Regulations (TWPCR). The research also focused on classifying and mapping the water quality in the lake by using the spatial analysis functions of GIS. As a result, it was determined that Lake Uluabat belonged to the 4th class, i.e., highly polluted water, including any water of lower quality. A remarkable portion of the pollution in the water basin was attributed to domestic wastewater discharges, industrial and agricultural activities, and mining.

  7. Pygrass: An Object Oriented Python Application Programming Interface (API) for Geographic Resources Analysis Support System (GRASS) Geographic Information System (GIS)

    OpenAIRE

    Marco Ciolli; Sören Gebbert; Pietro Zambelli

    2013-01-01

    PyGRASS is an object-oriented Python Application Programming Interface (API) for Geographic Resources Analysis Support System (GRASS) Geographic Information System (GIS), a powerful open source GIS widely used in academia, commercial settings and governmental agencies. We present the architecture of the PyGRASS library, covering interfaces to GRASS modules, vector and raster data, with a focus on the new capabilities that it provides to GRASS users and developers. Our design concept of the mo...

  8. Geographical information systems

    DEFF Research Database (Denmark)

    Möller, Bernd

    2004-01-01

    The chapter gives an introduction to Geographical Information Systems (GIS) with particular focus on their application within environmental management.......The chapter gives an introduction to Geographical Information Systems (GIS) with particular focus on their application within environmental management....

  9. DEACTIVATION AND DECOMMISSIONING PLANNING AND ANALYSIS WITH GEOGRAPHIC INFORMATION SYSTEMS

    Energy Technology Data Exchange (ETDEWEB)

    Bollinger, J; William Austin, W; Larry Koffman, L

    2007-09-17

    From the mid-1950's through the 1980's, the U.S. Department of Energy's Savannah River Site produced nuclear materials for the weapons stockpile, for medical and industrial applications, and for space exploration. Although SRS has a continuing defense-related mission, the overall site mission is now oriented toward environmental restoration and management of legacy chemical and nuclear waste. With the change in mission, SRS no longer has a need for much of the infrastructure developed to support the weapons program. This excess infrastructure, which includes over 1000 facilities, will be decommissioned and demolished over the forthcoming years. Dispositioning facilities for decommissioning and deactivation requires significant resources to determine hazards, structure type, and a rough-order-of-magnitude estimate for the decommissioning and demolition cost. Geographic information systems (GIS) technology was used to help manage the process of dispositioning infrastructure and for reporting the future status of impacted facilities.

  10. Airports Geographic Information System

    Data.gov (United States)

    Department of Transportation — The Airports Geographic Information System maintains the airport and aeronautical data required to meet the demands of the Next Generation National Airspace System....

  11. Drought Analysis of Aksu Irrigation Area in Antalya by Aydeniz Method and Geographic Information Systems

    OpenAIRE

    ARSLAN, Onur; ÖNDER, Hasan Hüseyin; ÖZDEMİR, Gültekin

    2014-01-01

    n this study, a drought analysis has been carried out for Aksu-Antalya Irrigation Area by using Aydeniz Method and Geographic Information Systems. Meteorological data of Antalya, Isparta, Korkuteli and Manavgat I

  12. Environmental geographic information system.

    Energy Technology Data Exchange (ETDEWEB)

    Peek, Dennis W; Helfrich, Donald Alan; Gorman, Susan

    2010-08-01

    This document describes how the Environmental Geographic Information System (EGIS) was used, along with externally received data, to create maps for the Site-Wide Environmental Impact Statement (SWEIS) Source Document project. Data quality among the various classes of geographic information system (GIS) data is addressed. A complete listing of map layers used is provided.

  13. Symposium on Geographic Information Systems.

    Science.gov (United States)

    Felleman, John, Ed.

    1990-01-01

    Six papers on geographic information systems cover the future of geographic information systems, land information systems modernization in Wisconsin, the Topologically Integrated Geographic Encoding and Referencing (TIGER) System of the U.S. Bureau of the Census, satellite remote sensing, geographic information systems and sustainable development,…

  14. Pygrass: An Object Oriented Python Application Programming Interface (API for Geographic Resources Analysis Support System (GRASS Geographic Information System (GIS

    Directory of Open Access Journals (Sweden)

    Marco Ciolli

    2013-03-01

    Full Text Available PyGRASS is an object-oriented Python Application Programming Interface (API for Geographic Resources Analysis Support System (GRASS Geographic Information System (GIS, a powerful open source GIS widely used in academia, commercial settings and governmental agencies. We present the architecture of the PyGRASS library, covering interfaces to GRASS modules, vector and raster data, with a focus on the new capabilities that it provides to GRASS users and developers. Our design concept of the module interface allows the direct linking of inputs and outputs of GRASS modules to create process chains, including compatibility checks, process control and error handling. The module interface was designed to be easily extended to work with remote processing services (Web Processing Service (WPS, Web Service Definition Language (WSDL/Simple Object Access Protocol (SOAP. The new object-oriented Python programming API introduces an abstract layer that opens the possibility to use and access transparently the efficient raster and vector functions of GRASS that are implemented in C. The design goal was to provide an easy to use, but powerful, Python interface for users and developers who are not familiar with the programming language C and with the GRASS C-API. We demonstrate the capabilities, scalability and performance of PyGRASS with several dedicated tests and benchmarks. We compare and discuss the results of the benchmarks with dedicated C implementations.

  15. Transportation Routing Analysis Geographic Information System (TRAGIS) User's Manual

    Energy Technology Data Exchange (ETDEWEB)

    Johnson, PE

    2003-09-18

    The Transportation Routing Analysis Geographic Information System (TRAGIS) model is used to calculate highway, rail, or waterway routes within the United States. TRAGIS is a client-server application with the user interface and map data files residing on the user's personal computer and the routing engine and network data files on a network server. The user's manual provides documentation on installation and the use of the many features of the model.

  16. Volunteered Geographic Information in Wikipedia

    Science.gov (United States)

    Hardy, Darren

    2010-01-01

    Volunteered geographic information (VGI) refers to the geographic subset of online user-generated content. Through Geobrowsers and online mapping services, which use geovisualization and Web technologies to share and produce VGI, a global digital commons of geographic information has emerged. A notable example is Wikipedia, an online collaborative…

  17. Geographic information systems, remote sensing, and spatial analysis activities in Texas, 2008-09

    Science.gov (United States)

    ,

    2009-01-01

    Geographic information system (GIS) technology has become an important tool for scientific investigation, resource management, and environmental planning. A GIS is a computer-aided system capable of collecting, storing, analyzing, and displaying spatially referenced digital data. GIS technology is useful for analyzing a wide variety of spatial data. Remote sensing involves collecting remotely sensed data, such as satellite imagery, aerial photography, or radar images, and analyzing the data to gather information or investigate trends about the environment or the Earth's surface. Spatial analysis combines remotely sensed, thematic, statistical, quantitative, and geographical data through overlay, modeling, and other analytical techniques to investigate specific research questions. It is the combination of data formats and analysis techniques that has made GIS an essential tool in scientific investigations. This fact sheet presents information about the technical capabilities and project activities of the U.S. Geological Survey (USGS) Texas Water Science Center (TWSC) GIS Workgroup during 2008 and 2009. After a summary of GIS Workgroup capabilities, brief descriptions of activities by project at the local and national levels are presented. Projects are grouped by the fiscal year (October-September 2008 or 2009) the project ends and include overviews, project images, and Internet links to additional project information and related publications or articles.

  18. Geographic information systems, remote sensing, and spatial analysis activities in Texas, 2002-07

    Science.gov (United States)

    Pearson, D.K.; Gary, R.H.; Wilson, Z.D.

    2007-01-01

    Geographic information system (GIS) technology has become an important tool for scientific investigation, resource management, and environmental planning. A GIS is a computer-aided system capable of collecting, storing, analyzing, and displaying spatially referenced digital data. GIS technology is particularly useful when analyzing a wide variety of spatial data such as with remote sensing and spatial analysis. Remote sensing involves collecting remotely sensed data, such as satellite imagery, aerial photography, or radar images, and analyzing the data to gather information or investigate trends about the environment or the Earth's surface. Spatial analysis combines remotely sensed, thematic, statistical, quantitative, and geographical data through overlay, modeling, and other analytical techniques to investigate specific research questions. It is the combination of data formats and analysis techniques that has made GIS an essential tool in scientific investigations. This document presents information about the technical capabilities and project activities of the U.S. Geological Survey (USGS) Texas Water Science Center (TWSC) GIS Workgroup from 2002 through 2007.

  19. Management and analysis of water-use data using a geographic information system

    Science.gov (United States)

    Juracek, K.E.; Kenny, J.F.

    1993-01-01

    As part of its mission, the U.S. Geological Survey conducts water-resources research. Site-specific and aggregate water-use data are used in the Survey's National Water-Use Information Program and in various hydrologic investigations. Both types of activities have specific requirements in terms of water-use data access, analysis, and display. In Kansas, the Survey obtains water-use information from several sources. Typically, this information is in a format that is not readily usable by the Survey. Geographic information system (GIS) technology is being used to restructure the available water-use data into a format that allows users to readily access and summarize site-specific water-use data by source (i.e., surface or ground water), type of use, and user-defined area.

  20. Geographic information abstractions: conceptual clarity for geographic modeling

    OpenAIRE

    T L Nyerges

    1991-01-01

    Just as we abstract our reality to make life intellectually manageable, we must create abstractions when we build models of geographic structure and process. Geographic information abstractions with aspects of theme, time, and space can be used to provide a comprehensive description of geographic reality in a geographic information system (GIS). In the context of geographic modeling a geographic information abstraction is defined as a simultaneous focus on important characteristics of geograp...

  1. Geographic information analysis: An ecological approach for the management of wildlife on the forest landscape

    Science.gov (United States)

    Ripple, William J.

    1995-01-01

    This document is a summary of the project funded by NAGw-1460 as part of the Earth Observation Commericalization/Applications Program (EOCAP) directed by NASA's Earth Science and Applications Division. The goal was to work with several agencies to focus on forest structure and landscape characterizations for wildlife habitat applications. New analysis techniques were used in remote sensing and landscape ecology with geographic information systems (GIS). The development of GIS and the emergence of the discipline of landscape ecology provided us with an opportunity to study forest and wildlife habitat resources from a new perspective. New techniques were developed to measure forest structure across scales from the canopy to the regional level. This paper describes the project team, technical advances, and technology adoption process that was used. Reprints of related refereed journal articles are in the Appendix.

  2. Geographical information system (GIS) suitability analysis of radioactive waste repository site in Pahang, Malaysia

    International Nuclear Information System (INIS)

    The aim of this project is to identify a suitable site for radioactive waste repository in Pahang using remote sensing and geographical information system (GIS) technologies. There are ten parameters considered in the analysis, which divided into Selection Criteria and Exclusion Criteria. The Selection Criteria parameters consists of land use, rainfall, lineament, slope, groundwater potential and elevation while Exclusion Criteria parameters consist of urban, protected land and island. Furthermore, all parameters were integrated, given weight age and ranked for site selection evaluation in GIS environment. At the first place, about twelve sites have been identified as suitable sites for radioactive waste repository throughout the study area. These sites were further analysed by ground checking on the physical setting including geological, drainage, and population density in order to finalise three most suitable sites for radioactive waste repository. (author)

  3. GNIS: Geographic Names Information Systems - All features

    Data.gov (United States)

    Earth Data Analysis Center, University of New Mexico — The Geographic Names Information System (GNIS) actively seeks data from and partnerships with Government agencies at all levels and other interested organizations....

  4. Environmental factor analysis of cholera in China using remote sensing and geographical information systems.

    Science.gov (United States)

    Xu, M; Cao, C X; Wang, D C; Kan, B; Xu, Y F; Ni, X L; Zhu, Z C

    2016-04-01

    Cholera is one of a number of infectious diseases that appears to be influenced by climate, geography and other natural environments. This study analysed the environmental factors of the spatial distribution of cholera in China. It shows that temperature, precipitation, elevation, and distance to the coastline have significant impact on the distribution of cholera. It also reveals the oceanic environmental factors associated with cholera in Zhejiang, which is a coastal province of China, using both remote sensing (RS) and geographical information systems (GIS). The analysis has validated the correlation between indirect satellite measurements of sea surface temperature (SST), sea surface height (SSH) and ocean chlorophyll concentration (OCC) and the local number of cholera cases based on 8-year monthly data from 2001 to 2008. The results show the number of cholera cases has been strongly affected by the variables of SST, SSH and OCC. Utilizing this information, a cholera prediction model has been established based on the oceanic and climatic environmental factors. The model indicates that RS and GIS have great potential for designing an early warning system for cholera.

  5. Environmental factor analysis of cholera in China using remote sensing and geographical information systems.

    Science.gov (United States)

    Xu, M; Cao, C X; Wang, D C; Kan, B; Xu, Y F; Ni, X L; Zhu, Z C

    2016-04-01

    Cholera is one of a number of infectious diseases that appears to be influenced by climate, geography and other natural environments. This study analysed the environmental factors of the spatial distribution of cholera in China. It shows that temperature, precipitation, elevation, and distance to the coastline have significant impact on the distribution of cholera. It also reveals the oceanic environmental factors associated with cholera in Zhejiang, which is a coastal province of China, using both remote sensing (RS) and geographical information systems (GIS). The analysis has validated the correlation between indirect satellite measurements of sea surface temperature (SST), sea surface height (SSH) and ocean chlorophyll concentration (OCC) and the local number of cholera cases based on 8-year monthly data from 2001 to 2008. The results show the number of cholera cases has been strongly affected by the variables of SST, SSH and OCC. Utilizing this information, a cholera prediction model has been established based on the oceanic and climatic environmental factors. The model indicates that RS and GIS have great potential for designing an early warning system for cholera. PMID:26464184

  6. Application of Remote Sensing and Ecology Analysis Method for Geographic Information System of Coastal Ecosystem

    OpenAIRE

    Bangun Muljo Sukojo

    2003-01-01

    With the development that have been done on all Indonesian coastal area, the damaged can be suffered from day to day. The decrease of environmental or ecosystem quality occurred and effected the economic, social and cultural life directly or indirectly. Based on that condition, data or information is needed to look accurately the decrement level and the way to handle it. One method that can be used is a computer based technology which commonly called Geographic Information System (GIS). The t...

  7. What influences geography teachers' usage of geographic information systems? A structural equation analysis

    OpenAIRE

    Lay, Jinn-Guey; Chi, Yu-Lin; Hsieh, Yeu-Sheng; Chen, Yu-Wen

    2013-01-01

    Understanding the usage of the geographic information system (GIS) among geography teachers is a crucial step in evaluating the current dissemination of GIS knowledge and skills in Taiwan's educational system. The primary contribution of this research is to further our understanding of the factors that affect teachers' GIS usage. The structural equation model was employed to analyze the data collected from 725 senior high school geography teachers. This was done using a survey questionnaire i...

  8. Integrated geographic information systems (IGIS) analysis and definition of the tectonic framework of northern Mexico

    Science.gov (United States)

    Martinez Pina, Carlos Manuel

    Crustal rupture structures reactivated in the course of the tectonic history of northern Mexico are the surface expressions of planes of weakness, in the form of simple or composite rectilinear features or slightly curved, defined as lineaments. Unless otherwise defined as strike-slip faults, lineaments are part of parallel and sub-parallel oblique convergent or oblique divergent tectonic zones cross cutting the Sierra Madre Occidental and northern Mexico, in a NW trend. These shear zones are the response to the oblique subduction of the Farallon plate beneath North America. Kinematic analysis of five selected sites in northern Mexico, three basins and two compressional shear zones, proved possible a combination of shear mechanism diagram and models from analogue materials, with satellite imagery and geographic information systems, as an aid to define strike-slip fault motion. This was done using a reverse engineering process by comparing geometries. One of the sites assessed, involving the Parras Basin, Coahuila Block (CB), San Marcos fault, a postulated PBF-1 fault, allowed for palinpastic reconstruction of the CB that corroborated the results of the vector motion defined, in addition to an extension of ˜25% in a northwest southeast direction. A GIS-based compilation and georeferenced regional structural studies by several researchers were used as ground control areas (GCA); their interpolation and interpretation, resulted in a tectonic framework map of northern Mexico. In addition, shaded relief models overlaid by the lineaments / fault layer allowed structural analyses of basins related to these major structures. Two important results were obtained from this study: the Tepehuanes-San Luis-fault (TSL) and the Guadalupe fault, named herein, displaces the Villa de Reyes graben, and the Aguascalientes graben, respectively, to the SE, confirming their left lateral vector motion; afterwards TSL was displaced south by the right lateral strike slip Taxco-San Miguel de

  9. Geographic Information System and tools of spatial analysis in a pneumococcal vaccine trial

    Directory of Open Access Journals (Sweden)

    Tanskanen Antti

    2012-01-01

    Full Text Available Abstract Background The goal of this Geographic Information System (GIS study was to obtain accurate information on the locations of study subjects, road network and services for research purposes so that the clinical outcomes of interest (e.g., vaccine efficacy, burden of disease, nasopharyngeal colonization and its reduction could be linked and analyzed at a distance from health centers, hospitals, doctors and other important services. The information on locations can be used to investigate more accurate crowdedness, herd immunity and/or transmission patterns. Method A randomized, placebo-controlled, double-blind trial of an 11-valent pneumococcal conjugate vaccine (11PCV was conducted in Bohol Province in central Philippines, from July 2000 to December 2004. We collected the information on the geographic location of the households (N = 13,208 of study subjects. We also collected a total of 1982 locations of health and other services in the six municipalities and a comprehensive GIS data over the road network in the area. Results We calculated the numbers of other study subjects (vaccine and placebo recipients, respectively within the neighborhood of each study subject. We calculated distances to different services and identified the subjects sharing the same services (calculated by distance. This article shows how to collect a complete GIS data set for human to human transmitted vaccine study in developing country settings in an efficient and economical way. Conclusions The collection of geographic locations in intervention trials should become a routine task. The results of public health research may highly depend on spatial relationships among the study subjects and between the study subjects and the environment, both natural and infrastructural. Trial registration number ISRCTN: ISRCTN62323832

  10. Geographic information system for fusion and analysis of high-resolution remote sensing and ground data

    Science.gov (United States)

    Freeman, Anthony; Way, Jo Bea; Dubois, Pascale; Leberl, Franz

    1993-01-01

    We seek to combine high-resolution remotely sensed data with models and ground truth measurements, in the context of a Geographical Information System (GIS), integrated with specialized image processing software. We will use this integrated system to analyze the data from two Case Studies, one at a boreal forest site, the other a tropical forest site. We will assess the information content of the different components of the data, determine the optimum data combinations to study biogeophysical changes in the forest, assess the best way to visualize the results, and validate the models for the forest response to different radar wavelengths/polarizations. During the 1990's, unprecedented amounts of high-resolution images from space of the Earth's surface will become available to the applications scientist from the LANDSAT/TM series, European and Japanese ERS-1 satellites, RADARSAT and SIR-C missions. When the Earth Observation Systems (EOS) program is operational, the amount of data available for a particular site can only increase. The interdisciplinary scientist, seeking to use data from various sensors to study his site of interest, may be faced with massive difficulties in manipulating such large data sets, assessing their information content, determining the optimum combinations of data to study a particular parameter, visualizing his results and validating his model of the surface. The techniques to deal with these problems are also needed to support the analysis of data from NASA's current program of Multi-sensor Airborne Campaigns, which will also generate large volumes of data. In the Case Studies outlined in this proposal, we will have somewhat unique data sets. For the Bonanza Creek Experimental Forest (Case 1) calibrated DC-8 SAR (Synthetic Aperture Radar) data and extensive ground truth measurement are already at our disposal. The data set shows documented evidence to temporal change. The Belize Forest Experiment (Case 2) will produce calibrated DC-8 SAR

  11. Geographical Information in Virtual Environments

    NARCIS (Netherlands)

    Loo, J. van; Lawick van Pabst, J. van

    1998-01-01

    We studied the combination of a Geographical Information System (GIS) and a Virtual Environment (VE). The goal was to establish a bi-directional link between a GIS and a virtual environment. The first step was to combine three types of data to build the 3D world and store it into the GIS: a digital

  12. Constraint Databases and Geographic Information Systems

    OpenAIRE

    Revesz, Peter

    2007-01-01

    Constraint databases and geographic information systems share many applications. However, constraint databases can go beyond geographic information systems in efficient spatial and spatiotemporal data handling methods and in advanced applications. This survey mainly describes ways that constraint databases go beyond geographic information systems. However, the survey points out that in some areas constraint databases can learn also from geographic information systems.

  13. Technical note: The use of geographical information systems software for the spatial analysis of bone microstructure.

    Science.gov (United States)

    Rose, David C; Agnew, Amanda M; Gocha, Timothy P; Stout, Sam D; Field, Julie S

    2012-08-01

    Geographic information systems (GIS) software is typically used for analyzing geographically distributed data, allowing users to annotate points or areas on a map and attach data for spatial analyses. While traditional GIS-based research involves geo-referenced data (points tied to geographic locations), the use of this technology has other constructive applications for physical anthropologists. The use of GIS software for the study of bone histology offers a novel opportunity to analyze the distribution of bone nano- and microstructures, relative to macrostructure and in comparison to other variables of interest, such as biomechanical loading history. This approach allows for the examination of characteristics of single histological features while considering their role at the macroscopic level. Such research has immediate promise in examining the load history of bone by surveying the functional relationship between collagen fiber orientation (CFO) and strain mode. The diversity of GIS applications that may be utilized in bone histology research is just beginning to be explored. The goal of this study is to introduce a reliable methodology for such investigation and our objective is to quantify the heterogeneity of bone microstructure over an entire cross-section of bone using ArcGIS v 9.3 (ESRI). This was accomplished by identifying the distribution of remodeling units in a human metatarsal relative to bending axes. One biomechanical hypothesis suggests that CFO, manifested by patterns of birefringence, is indicative of mode of strain during formation. This study demonstrates that GIS can be used to investigate, describe, and compare such patterns through histological mapping. PMID:22700420

  14. IL FENOMENO VOLUNTEERED GEOGRAPHIC INFORMATION

    Directory of Open Access Journals (Sweden)

    Flavio Lupia

    2014-12-01

    Full Text Available The contribution addresses the phenomenon of Voluntereed Geographic Informationexplaining these new and burgeoning sources of information offers multidisciplinary scientists an unprecedented opportunity to conduct research on a variety of topics at multiple spatial and temporal scales. In particular the contribution refers to two COST Actions which have been recently activated on the subject which areparticularly relevant for the growing of the European scientific community.

  15. Analysis and Modeling of Agricultural Land use using Remote Sensing and Geographic Information System: a Review

    Directory of Open Access Journals (Sweden)

    Amol D. Vibhute, Dr. Bharti W. Gawali

    2013-05-01

    Full Text Available GIS, remote sensing and Global positioning System are the most widely useful tools for land use planning and decision support system. Remotely sensed imagery is beneficial for agricultural production. It gives the accurate information of agricultural activities such as different crop identification and classification, crop condition monitoring, crop growth, crop area and yield estimation, mapping of soil characteristics and precision farming. Information from remotely sensed imagery, geographic information system and global positioning system allows farmers to carry only affected areas of a field. Problems within the field may be identified before they create a big problem in the agricultural production using remotely sensed images. This paper attempts to review different techniques for various applications of GIS and Remote sensing for land use/land cover change detection, crop identification and classification, crop condition monitoring, crop growth, crop area and yield estimation, mapping of soil characteristics and precision farming. Thus implementating GIS and RS for better production of the crops as well as land use/land cover change detection can be achieved.

  16. Implementation of Geographic Information and Geographic Information Systems  in municipal Emergency Management – an Innovation adoption perspective

    OpenAIRE

    Le Duc, Michael

    2014-01-01

    The project reported concerns Emergency Management (EM) for local government especially support from Geographic Information (GI) and Geographic Information Systems (GIS). The questions investigated were: How can municipalities implement the use of Geographic Information and Geographic Information Systems for Emergency Management effectively? How can risk analysis be implemented with a special focus on support from GI and GIS? The purpose of the project was to, based on prior knowledge, develo...

  17. GNIS: Geographic Names Information Systems - All features (2013)

    Data.gov (United States)

    Earth Data Analysis Center, University of New Mexico — The Geographic Names Information System (GNIS) is the Federal standard for geographic nomenclature. The U.S. Geological Survey developed the GNIS for the U.S. Board...

  18. Advertising Policy and Geographic Information

    OpenAIRE

    TANASE, George Cosmin

    2014-01-01

    The geographic information in advertising has known an increasing importance in the last years, being described as a mass communication made for the account of interests which are identified: that of an advertiser who pays a media to diffuse a message which is generally created by an advertising agency. The principal objectives of a commercial campaign are to increase the awareness of the brand, to create a preference for a product, to lead consumers to buy, etc. For the last few years, the s...

  19. Analysis of terrains suitable for tourism and recreation by using geographic information system (GIS).

    Science.gov (United States)

    Aklıbaşında, Meliha; Bulut, Yahya

    2014-09-01

    The use and utilization areas of geographic information system (GIS) increase every day due to both enabling easiness in storing, updating, grouping, analyzing, correlating, and mapping of data about evaluation factors in planning studies and having quite low error margin depending on the accuracy of data stored. In fact, GIS is also used both in visualization and in various analyses in planning tourism terrains. In this study, the effectiveness of GIS on holistic evaluation of natural and cultural resources in planning tourism terrains was analyzed. Natural and cultural resources in Kayseri Yahyalı were quantified by using ArcGIS 9.3 software from GIS software; data were analyzed and potential tourism and recreation terrains, level of suitability, and rate of coverage were determined. As a result of the analyses, it was determined that 11.847 ha area (6,53%) was quite suitable for such kind of activities, 103.010 ha (56,77%) was suitable, 39.278 ha (21,65%) was less suitable, and 27.314 ha area (15,05%) was not suitable. In the next stage, landscape properties which are suitable for tourism and recreation were evaluated and landscape types were classified in the sense of their tourist attraction. It was determined that the water resources and valley landscapes were the basic sources of the tourism and recreation activities of Yahyalı, and it was determined that the landscape of the forest and mountain was important for variety of the tourism and recreation activities of Yahyalı. PMID:24848724

  20. Analysis of terrains suitable for tourism and recreation by using geographic information system (GIS).

    Science.gov (United States)

    Aklıbaşında, Meliha; Bulut, Yahya

    2014-09-01

    The use and utilization areas of geographic information system (GIS) increase every day due to both enabling easiness in storing, updating, grouping, analyzing, correlating, and mapping of data about evaluation factors in planning studies and having quite low error margin depending on the accuracy of data stored. In fact, GIS is also used both in visualization and in various analyses in planning tourism terrains. In this study, the effectiveness of GIS on holistic evaluation of natural and cultural resources in planning tourism terrains was analyzed. Natural and cultural resources in Kayseri Yahyalı were quantified by using ArcGIS 9.3 software from GIS software; data were analyzed and potential tourism and recreation terrains, level of suitability, and rate of coverage were determined. As a result of the analyses, it was determined that 11.847 ha area (6,53%) was quite suitable for such kind of activities, 103.010 ha (56,77%) was suitable, 39.278 ha (21,65%) was less suitable, and 27.314 ha area (15,05%) was not suitable. In the next stage, landscape properties which are suitable for tourism and recreation were evaluated and landscape types were classified in the sense of their tourist attraction. It was determined that the water resources and valley landscapes were the basic sources of the tourism and recreation activities of Yahyalı, and it was determined that the landscape of the forest and mountain was important for variety of the tourism and recreation activities of Yahyalı.

  1. Geographic Names Information System (GNIS) Cultural Features

    Data.gov (United States)

    Department of Homeland Security — The Geographic Names Information System (GNIS) is the Federal standard for geographic nomenclature. The U.S. Geological Survey developed the GNIS for the U.S. Board...

  2. Geographic Names Information System (GNIS) Antarctica Features

    Data.gov (United States)

    Department of Homeland Security — The Geographic Names Information System (GNIS) is the Federal standard for geographic nomenclature. The U.S. Geological Survey developed the GNIS for the U.S. Board...

  3. Geographic Names Information System (GNIS) Hydrography Lines

    Data.gov (United States)

    Department of Homeland Security — The Geographic Names Information System (GNIS) is the Federal standard for geographic nomenclature. The U.S. Geological Survey developed the GNIS for the U.S. Board...

  4. Geographic Names Information System (GNIS) Structures

    Data.gov (United States)

    Department of Homeland Security — The Geographic Names Information System (GNIS) is the Federal standard for geographic nomenclature. The U.S. Geological Survey developed the GNIS for the U.S. Board...

  5. Geographic Names Information System (GNIS) Community Features

    Data.gov (United States)

    Department of Homeland Security — The Geographic Names Information System (GNIS) is the Federal standard for geographic nomenclature. The U.S. Geological Survey developed the GNIS for the U.S. Board...

  6. Geographic Names Information System (GNIS) Hydrography Points

    Data.gov (United States)

    Department of Homeland Security — The Geographic Names Information System (GNIS) is the Federal standard for geographic nomenclature. The U.S. Geological Survey developed the GNIS for the U.S. Board...

  7. Geographic Names Information System (GNIS) Historical Features

    Data.gov (United States)

    Department of Homeland Security — The Geographic Names Information System (GNIS) is the Federal standard for geographic nomenclature. The U.S. Geological Survey developed the GNIS for the U.S. Board...

  8. Geographic Names Information System (GNIS) Admin Features

    Data.gov (United States)

    Department of Homeland Security — The Geographic Names Information System (GNIS) is the Federal standard for geographic nomenclature. The U.S. Geological Survey developed the GNIS for the U.S. Board...

  9. Geographic Names Information System (GNIS) Transportation Features

    Data.gov (United States)

    Department of Homeland Security — The Geographic Names Information System (GNIS) is the Federal standard for geographic nomenclature. The U.S. Geological Survey developed the GNIS for the U.S. Board...

  10. Geographic Names Information System (GNIS) Landform Features

    Data.gov (United States)

    Department of Homeland Security — The Geographic Names Information System (GNIS) is the Federal standard for geographic nomenclature. The U.S. Geological Survey developed the GNIS for the U.S. Board...

  11. Rock Slopes Failure Susceptibility Analysis: From Remote Sensing Measurements to Geographic Information System Raster Modules

    Directory of Open Access Journals (Sweden)

    Filipello Andrea

    2010-01-01

    Full Text Available Problem statement: Two important step can be recognised in the rockfall analysis: the potential failure detection and the run out simulation. Analyzing the stability of rock slopes, most important kinematisms are planar or wedge slidings and topplings. The aim of this study was to coupling a deterministic approach for landslide initiation (potential rockfall source areas with a runout analysis by developing new GRASS GIS raster modules. A case study in the Ossola Valley, at the border between Italy and Swiss, was discussed. Approach: New GIS raster modules for rockfall analysis were developed. Slope stability modules were based on rock mass classification indexes and on limit equilibrium model, while the prediction of rockfall travel distance was based on the shadow angle approach. Results: The study highlighted the importance of GIS tools for analysis of landslide susceptibility. The spatial forecasts provided by the new GIS modules were validated and supplemented by traditional analysis. Conclusion: This study proved that there is a good correspondence between the prediction of high attitude to instability calculated by the modules and the location of past events. The new modules have provided an opportunity to assess, in an objective and repeatable way, the susceptibility to failure and also quantitative information about area of invasion for rock falling.

  12. Using Fuzzy Analytic Hierarchy Process multicriteria and Geographical information system for coastal vulnerability analysis in Morocco: The case of Mohammedia

    Science.gov (United States)

    Tahri, Meryem; Maanan, Mohamed; Hakdaoui, Mustapha

    2016-04-01

    This paper shows a method to assess the vulnerability of coastal risks such as coastal erosion or submarine applying Fuzzy Analytic Hierarchy Process (FAHP) and spatial analysis techniques with Geographic Information System (GIS). The coast of the Mohammedia located in Morocco was chosen as the study site to implement and validate the proposed framework by applying a GIS-FAHP based methodology. The coastal risk vulnerability mapping follows multi-parametric causative factors as sea level rise, significant wave height, tidal range, coastal erosion, elevation, geomorphology and distance to an urban area. The Fuzzy Analytic Hierarchy Process methodology enables the calculation of corresponding criteria weights. The result shows that the coastline of the Mohammedia is characterized by a moderate, high and very high level of vulnerability to coastal risk. The high vulnerability areas are situated in the east at Monika and Sablette beaches. This technical approach is based on the efficiency of the Geographic Information System tool based on Fuzzy Analytical Hierarchy Process to help decision maker to find optimal strategies to minimize coastal risks.

  13. Spatial Analysis in Determination Of Flood Prone Areas Using Geographic Information System and Analytical Hierarchy Process at Sungai Sembrong's Catchment

    Science.gov (United States)

    Bukari, S. M.; Ahmad, M. A.; Wai, T. L.; Kaamin, M.; Alimin, N.

    2016-07-01

    Floods that struck Johor state in 2006 and 2007 and the East Coastal in 2014 have triggered a greatly impact to the flood management here in Malaysia. Accordingly, this study conducted to determine potential areas of flooding, especially in Batu Pahat district since it faces terrifying experienced with heavy flood. This objective is archived by using the application of Geographic Information Systems (GIS) on study area of flood risk location at the watershed area of Sungai Sembrong. GIS functions as spatial analysis is capable to produce new information based on analysis of data stored in the system. Meanwhile the Analytical Hierarchy Process (AHP) was used as a method for setting up in decision making concerning the existing data. By using AHP method, preparation and position of the criteria and parameters required in GIS are neater and easier to analyze. Through this study, a flood prone area in the watershed of Sungai Sembrong was identified with the help of GIS and AHP. Analysis was conducted to test two different cell sizes, which are 30 and 5. The analysis of flood prone areas were tested on both cell sizes with two different water levels and the results of the analysis were displayed by GIS. Therefore, the use of AHP and GIS are effective and able to determine the potential flood plain areas in the watershed area of Sungai Sembrong.

  14. Geographic Information Systems and Web Page Development

    Science.gov (United States)

    Reynolds, Justin

    2004-01-01

    The Facilities Engineering and Architectural Branch is responsible for the design and maintenance of buildings, laboratories, and civil structures. In order to improve efficiency and quality, the FEAB has dedicated itself to establishing a data infrastructure based on Geographic Information Systems, GIS. The value of GIS was explained in an article dating back to 1980 entitled "Need for a Multipurpose Cadastre" which stated, "There is a critical need for a better land-information system in the United States to improve land-conveyance procedures, furnish a basis for equitable taxation, and provide much-needed information for resource management and environmental planning." Scientists and engineers both point to GIS as the solution. What is GIS? According to most text books, Geographic Information Systems is a class of software that stores, manages, and analyzes mapable features on, above, or below the surface of the earth. GIS software is basically database management software to the management of spatial data and information. Simply put, Geographic Information Systems manage, analyze, chart, graph, and map spatial information. GIS can be broken down into two main categories, urban GIS and natural resource GIS. Further still, natural resource GIS can be broken down into six sub-categories, agriculture, forestry, wildlife, catchment management, archaeology, and geology/mining. Agriculture GIS has several applications, such as agricultural capability analysis, land conservation, market analysis, or whole farming planning. Forestry GIs can be used for timber assessment and management, harvest scheduling and planning, environmental impact assessment, and pest management. GIS when used in wildlife applications enables the user to assess and manage habitats, identify and track endangered and rare species, and monitor impact assessment.

  15. Geographical information system (GIS) as a new tool to evaluate epidemiology based on spatial analysis and clinical outcomes in acromegaly.

    Science.gov (United States)

    Naves, Luciana Ansaneli; Porto, Lara Benigno; Rosa, João Willy Corrêa; Casulari, Luiz Augusto; Rosa, José Wilson Corrêa

    2015-02-01

    Geographical information systems (GIS) have emerged as a group of innovative software components useful for projects in epidemiology and planning in Health Care System. This is an original study to investigate environmental and geographical influences on epidemiology of acromegaly in Brazil. We aimed to validate a method to link an acromegaly registry with a GIS mapping program, to describe the spatial distribution of patients, to identify disease clusters and to evaluate if the access to Health Care could influence the outcome of the disease. Clinical data from 112 consecutive patients were collected and home addresses were plotted in the GIS software for spatial analysis. The buffer spatial distribution of patients living in Brasilia showed that 38.1% lived from 0.33 to 8.66 km, 17.7% from 8.67 to 18.06 km, 22.2% from 18.07 to 25.67 km and 22% from 25.68 to 36.70 km distant to the Reference Medical Center (RMC), and no unexpected clusters were identified. Migration of 26 patients from 11 others cities in different regions of the country was observed. Most of patients (64%) with adenomas bigger than 25 mm lived more than 20 km away from RMC, but no significant correlation between the distance from patient's home to the RMC and tumor diameter (r = 0.45 p = 0.20) nor for delay in diagnosis (r = 0.43 p = 0.30) was found. The geographical distribution of diagnosed cases did not impact in the latency of diagnosis or tumor size but the recognition of significant migration denotes that improvements in the medical assistance network are needed.

  16. Geographical information system (GIS) as a new tool to evaluate epidemiology based on spatial analysis and clinical outcomes in acromegaly

    OpenAIRE

    Naves, Luciana Ansaneli; Porto, Lara Benigno; Rosa, João Willy Corrêa; Casulari, Luiz Augusto; Rosa, José Wilson Corrêa

    2013-01-01

    Geographical information systems (GIS) have emerged as a group of innovative software components useful for projects in epidemiology and planning in Health Care System. This is an original study to investigate environmental and geographical influences on epidemiology of acromegaly in Brazil. We aimed to validate a method to link an acromegaly registry with a GIS mapping program, to describe the spatial distribution of patients, to identify disease clusters and to evaluate if the access to Hea...

  17. The Oklahoma Geographic Information Retrieval System

    Science.gov (United States)

    Blanchard, W. A.

    1982-01-01

    The Oklahoma Geographic Information Retrieval System (OGIRS) is a highly interactive data entry, storage, manipulation, and display software system for use with geographically referenced data. Although originally developed for a project concerned with coal strip mine reclamation, OGIRS is capable of handling any geographically referenced data for a variety of natural resource management applications. A special effort has been made to integrate remotely sensed data into the information system. The timeliness and synoptic coverage of satellite data are particularly useful attributes for inclusion into the geographic information system.

  18. Analysis of Debris Flow Kuranji River in Padang City Using Rainfall Data, Remote Sensing and Geographic Information System

    International Nuclear Information System (INIS)

    Flash flood is the most common environmental hazard worldwide. This phenomenon is usually occurs due to intense and prolonged rainfall spells on saturated ground. When there is a rapid rise in water levels and high flow-velocities of the stream occur, the channel overflows and the result is a flash flood. Flash floods normally cause a dangerous wall of roaring water carrying rocks, mud and other debris. On Tuesday, July 24, 2012 at 18:00 pm, a flash flood (debris flow) struck Kuranji River whereby 19 urban villages in seven (7) sub-districts in the city of Padang were affected by this flood disaster. The temporary loss estimated is 40 Billion US Dollar reported by the West Sumatra Provincial Government due to many damages of the built environment infrastructures. This include damaged houses of 878 units, mosque 15 units, irrigation damaged 12 units, bridges 6 units, schools 2 units and health posts 1 unit. Generally, widely used methods for making a landslide study are Geographic Information System (GIS) and Remote Sensing techniques. The landslide information extracted from remotely sensed products is mainly related to morphology, vegetation and hydrologic conditions of a slope. While GIS is used to create a database, data management, data display and to analyze data such as thematic maps of land use/land cover, normalized difference vegetation index (NDVI), rainfall data and soil texture. This paper highlights the analysis of the condition of the Watershed Kuranji River experiencing flash floods, using remote sensing satellite image of Landsat ETM 7 in 2009 and 2012 and Geographic Information System (GIS). Furthermore, the data was analyzed to determine whether this flash flood occurred due to extreme rain or collapse of existing natural dams in the upstream of the Kuranji River

  19. Hypsometric Analysis Using Geographical Information System of Gour River Watershed, Jabalpur, Madhya Pradesh, India

    Directory of Open Access Journals (Sweden)

    Shailesh Kumar Sharma

    2016-04-01

    Full Text Available Hypsometric analysis of drainage basins reveals the geological stage of watershed and is a measure of its maturity, indicating the susceptibility of the watershed to erosion. In the present study sub watersheds of Khurji Nala and Dala Nala watersheds which are tributaries of GourRiver located in Jabalpur district of Madhya Pradesh was considered as the case study area. The watersheds were delineated into sub watersheds and hypsometric analysis was carried out for all of them using the digital contour map, which was generated using Arc GIS. The hypsometric integral values of Khurji Nala and Dala Nala sub watersheds reveals that sub watershed 2 of Khurji Nala and sub watershed 7 of Dala Nala watershed should be given top priority for soil and water conservation.

  20. Applications of Remote Sensing and GIS(Geographic Information System) in Crime Analysis of Gujranwala City.

    Science.gov (United States)

    Munawar, Iqra

    2016-07-01

    Crime mapping is a dynamic process. It can be used to assist all stages of the problem solving process. Mapping crime can help police protect citizens more effectively. The decision to utilize a certain type of map or design element may change based on the purpose of a map, the audience or the available data. If the purpose of the crime analysis map is to assist in the identification of a particular problem, selected data may be mapped to identify patterns of activity that have been previously undetected. The main objective of this research was to study the spatial distribution patterns of the four common crimes i.e Narcotics, Arms, Burglary and Robbery in Gujranwala City using spatial statistical techniques to identify the hotspots. Hotspots or location of clusters were identified using Getis-Ord Gi* Statistic. Crime analysis mapping can be used to conduct a comprehensive spatial analysis of the problem. Graphic presentations of such findings provide a powerful medium to communicate conditions, patterns and trends thus creating an avenue for analysts to bring about significant policy changes. Moreover Crime mapping also helps in the reduction of crime rate.

  1. Application of risk analysis and geographic information system technologies to the prevention of diarrheal diseases in Nigeria.

    Science.gov (United States)

    Njemanze, P C; Anozie, J; Ihenacho, J O; Russell, M J; Uwaeziozi, A B

    1999-09-01

    Among the poor in developing countries, up to 20% of an infant's life experience may include diarrhea. This problem is spatially related to the lack of potable water at different sites. This project used risk analysis (RA) methods and geographic information system (GIS) technologies to evaluate the health impact of water source. Maps of Imo State, Nigeria were converted into digital form using ARC/INFO GIS software, and the resulting coverages included geology, hydrology, towns, and villages. A total of 11,537 diarrheal cases were reported. Thirty-nine water sources were evaluated. A computer modeling approach called probabilistic layer analysis (PLA) spatially displayed the water source at layers of geology, hydrology, population, environmental pollution, and electricity according to a color-coded five-point ranking. The water sources were categorized into A, B, and C based on the cumulative scores 19 for C. T-test showed revealed significant differences in diarrheal disease incidence between categories A, B, and C with mean +/- SEM values of 1.612 +/- 0.325, 6.257 +/- 0.408, and 15.608 +/- 2.151, respectively. The differences were significant between categories A and B (P = 0.0000022), A and C (P = 0.0000188), and B and C (P = 0.0011348). The PLA enabled estimation of the probability of the risk of diarrheal diseases occurring at each layer and solutions to eliminate these risks. PMID:10497970

  2. A Geographic Information System (GIS) analysis for trace metal assessment of sediments in the Gulf of Paria, Trinidad

    International Nuclear Information System (INIS)

    The Gulf of Paria is a semi-enclosed shallow basin with increasing coastal development activities along Trinidad's west coast. Sediments present a host for trace metal pollutants from overlying waters, therefore determination of their content is critical in evaluating and detecting sources of marine pollution. This paper presents a Geographic Information System (GIS) analysis of geochemical assessment for trace metals in coastal sediments of the Gulf of Paria. This GIS approach facilitates interpretation of the spatial relationships among key environmental processes. The GIS development involves the integration of spatial and attribute data pertaining to bathymetry, current systems, topography, rivers, land use/land cover and coastal sediments. It employs spatial interpolation and retrieval operations to analyze the total trace metal concentrations of aluminum, copper and lead in the sediments and the clay-enriched sediments, to determine whether they are related to sediment type or are affected by the discharge from anthropogenic sources. Spatial distribution modeling of element concentrations are produced to indicate contamination plumes from possible anthropogenic sources such as rivers entering the Gulf of Paria, and to reveal potential hot spots and dispersion patterns. A direct spatial correlation between clay-enriched sediments and high concentrations of aluminum and lead is detected, however regions of high concentrations of copper and lead indicate a relationship to anthropogenic sources. The effectiveness of GIS for visualization, spatial query and overlay of geochemical analysis is demonstrated

  3. A geographic information system and multi criteria analysis method for site selection of spent nuclear fuel disposal

    International Nuclear Information System (INIS)

    This thesis aims to develop a site selection methodology for the construction of final repository for the spent nuclear fuel disposal, by using geographic information systems (GIS) and multi-criteria decision analysis. Decision making processes of this kind are often complex, given the great number of space parameters to consider and also the typically conflicting opinions of the diverse stake holders. By using GIS, data from different space parameters can be quickly and reliably stored, treated and analyzed. Multi-criteria techniques allow for the incorporation of different stake holders' opinions. These tools, when jointly used, allow for the decision process to be more transparent, quick and reliable. The method developed was applied to the particular case of the state of Rio de Janeiro. Weights obtained from an expert panel and also by using the Hierarchical Analysis Method and cartographic data were combined in the GIS. The application showed that it is possible not only to select and classify areas as to their aptness for the proposed objective, but also to exclude those clearly inadequate areas, thus optimizing the selection process by reducing the search space and consequently minimizing costs and the time spent in the search. (author)

  4. Geographical data structures supporting regional analysis

    Energy Technology Data Exchange (ETDEWEB)

    Edwards, R.G.; Durfee, R.C.

    1978-01-01

    In recent years the computer has become a valuable aid in solving regional environmental problems. Over a hundred different geographic information systems have been developed to digitize, store, analyze, and display spatially distributed data. One important aspect of these systems is the data structure (e.g. grids, polygons, segments) used to model the environment being studied. This paper presents eight common geographic data structures and their use in studies of coal resources, power plant siting, population distributions, LANDSAT imagery analysis, and landuse analysis.

  5. Cartography, Geographic Information, and Public Policy.

    Science.gov (United States)

    Monmonier, Mark S.

    1982-01-01

    Cartography is undergoing a digital transition with geographic data becoming available in machine-readable form and with the diminishing need to draw and print maps in order to communicate information. This automation will force cartographers to concentrate upon the institutional aspects of information management. Implications for geographic…

  6. Geographic information system for fusion and analysis of high-resolution remote sensing and ground truth data

    Science.gov (United States)

    Freeman, Anthony; Way, Jo Bea; Dubois, Pascale; Leberl, Franz

    1992-01-01

    We seek to combine high-resolution remotely sensed data with models and ground truth measurements, in the context of a Geographical Information System, integrated with specialized image processing software. We will use this integrated system to analyze the data from two Case Studies, one at a bore Al forest site, the other a tropical forest site. We will assess the information content of the different components of the data, determine the optimum data combinations to study biogeophysical changes in the forest, assess the best way to visualize the results, and validate the models for the forest response to different radar wavelengths/polarizations. During the 1990's, unprecedented amounts of high-resolution images from space of the Earth's surface will become available to the applications scientist from the LANDSAT/TM series, European and Japanese ERS-1 satellites, RADARSAT and SIR-C missions. When the Earth Observation Systems (EOS) program is operational, the amount of data available for a particular site can only increase. The interdisciplinary scientist, seeking to use data from various sensors to study his site of interest, may be faced with massive difficulties in manipulating such large data sets, assessing their information content, determining the optimum combinations of data to study a particular parameter, visualizing his results and validating his model of the surface. The techniques to deal with these problems are also needed to support the analysis of data from NASA's current program of Multi-sensor Airborne Campaigns, which will also generate large volumes of data. In the Case Studies outlined in this proposal, we will have somewhat unique data sets. For the Bonanza Creek Experimental Forest (Case I) calibrated DC-8 SAR data and extensive ground truth measurement are already at our disposal. The data set shows documented evidence to temporal change. The Belize Forest Experiment (Case II) will produce calibrated DC-8 SAR and AVIRIS data, together with

  7. Analysis of Relationships between Altitude and Distance from Volcano with Stomach Cancer Incidence Using a Geographic Information System.

    Science.gov (United States)

    Amani, F; Ahari, S Sadeghieh; Barzegari, S; Hassanlouei, B; Sadrkabir, M; Farzaneh, Esmaeil

    2015-01-01

    Gastric cancer (GC) is the fifth most common cancer in the world, with a wide variation in incidence rates across different geographical areas. In Iran GC is the most common cancer in males and it is reported to be the third most prevalent after breast and colorectal in females. A geographical information system (GIS) allows investigation of the geographical distribution of diseases. The purpose of the present study was to explore the relationship between gastric cancer and effective climatic factors using GIS. The dispersion distribution and the relationship between environmental factors effective on cancer were measured using Arc GIS. Of all cases, 672 (73.8%) were in males with a sex ratio of 3 to 1. The highest incidence by cities was seen in Namin with 137.5 per 100,000. The results of this study showed that the distribution of GC around the Sabalan volcanic mountain was significantly higher than other places in the same province. These results can be considered as a window to future comprehensive research on gastric cancer. PMID:26514462

  8. Analysis of Relationships between Altitude and Distance from Volcano with Stomach Cancer Incidence Using a Geographic Information System.

    Science.gov (United States)

    Amani, F; Ahari, S Sadeghieh; Barzegari, S; Hassanlouei, B; Sadrkabir, M; Farzaneh, Esmaeil

    2015-01-01

    Gastric cancer (GC) is the fifth most common cancer in the world, with a wide variation in incidence rates across different geographical areas. In Iran GC is the most common cancer in males and it is reported to be the third most prevalent after breast and colorectal in females. A geographical information system (GIS) allows investigation of the geographical distribution of diseases. The purpose of the present study was to explore the relationship between gastric cancer and effective climatic factors using GIS. The dispersion distribution and the relationship between environmental factors effective on cancer were measured using Arc GIS. Of all cases, 672 (73.8%) were in males with a sex ratio of 3 to 1. The highest incidence by cities was seen in Namin with 137.5 per 100,000. The results of this study showed that the distribution of GC around the Sabalan volcanic mountain was significantly higher than other places in the same province. These results can be considered as a window to future comprehensive research on gastric cancer.

  9. Quantum GIS (QGIS) Geographic Information System Tutorial

    OpenAIRE

    Urrutia Fernández, M. Àngels

    2014-01-01

    The goal of the present Master’s Thesis is to develop a learning tutorial for Lisboa Quantum GIS v.1.8.0 Geographic Information System. The resulting document is intended as a learning tool. This document should be useful to those people who wish to acquire basic skills in the use of Quantum GIS and, at the same time, should provide the user with a picture of what Geographic Information Systems (GIS) are. The skills that this tutorial aims to teach are how to locate and down...

  10. Optimal site selection for sitting a solar park using multi-criteria decision analysis and geographical information systems

    Science.gov (United States)

    Georgiou, Andreas; Skarlatos, Dimitrios

    2016-07-01

    Among the renewable power sources, solar power is rapidly becoming popular because it is inexhaustible, clean, and dependable. It has also become more efficient since the power conversion efficiency of photovoltaic solar cells has increased. Following these trends, solar power will become more affordable in years to come and considerable investments are to be expected. Despite the size of solar plants, the sitting procedure is a crucial factor for their efficiency and financial viability. Many aspects influence such a decision: legal, environmental, technical, and financial to name a few. This paper describes a general integrated framework to evaluate land suitability for the optimal placement of photovoltaic solar power plants, which is based on a combination of a geographic information system (GIS), remote sensing techniques, and multi-criteria decision-making methods. An application of the proposed framework for the Limassol district in Cyprus is further illustrated. The combination of a GIS and multi-criteria methods produces an excellent analysis tool that creates an extensive database of spatial and non-spatial data, which will be used to simplify problems as well as solve and promote the use of multiple criteria. A set of environmental, economic, social, and technical constrains, based on recent Cypriot legislation, European's Union policies, and expert advice, identifies the potential sites for solar park installation. The pairwise comparison method in the context of the analytic hierarchy process (AHP) is applied to estimate the criteria weights in order to establish their relative importance in site evaluation. In addition, four different methods to combine information layers and check their sensitivity were used. The first considered all the criteria as being equally important and assigned them equal weight, whereas the others grouped the criteria and graded them according to their objective perceived importance. The overall suitability of the study

  11. Analysis of Association Between Remotely Sensed (RS) Data and Soil Transmitted Helminthes Infection Using Geographical Information Systems (GIS): Boaco, Nicaragua

    Science.gov (United States)

    MorenoMadrinan, Max J.; Al-Hamdan, Mohammad Z.; Parajon, David G.; Rickman, Douglas L.; Luvall, Jeffrey; Podest, Erika; Parajon, Laura C.; Martinez, Roberto A.; Estes, Sue

    2011-01-01

    Soil-transmitted helminths are intestinal nematodes that can infect all members of a population but specially school-age children living in poverty. Infection can be significantly reversed with anthelmintic drug treatments and sanitation improvement. Implementation of effective public health programs requires reliable and updated information to identify areas at higher risk and to calculate amount of drug required. Geo-referenced in situ prevalence data will be overlaid over an ecological map derived from RS data using ARC Map 9.3 (ESRI). Prevalence data and RS data matching at the same geographical location will be analyzed for correlation and those variables from RS data that better correlate with prevalence will be included in a multivariate regression model. Temperature, vegetation, and distance to bodies of water will be inferred using data from Moderate-Resolution Imaging Spectroradiometer (MODIS) and Landsat TM and ETM+. Elevation will be estimated with data from The Shuttle Radar Topography Mission (SRTM). Prevalence and intensity of infections are determined by parasitological survey (Kato Katz) of children enrolled in rural schools in Boaco, Nicaragua, in the communities of El Roblar, Cumaica Norte, Malacatoya 1, and Malacatoya 2). This study will demonstrate the importance of an integrated GIS/RS approach to define sampling clusters without the need for any ground-based survey. Such information is invaluable to identify areas of high risk and to geographically target control programs that maximize cost-effectiveness and sanitation efforts.

  12. Higher-dimensional modelling of geographic information

    NARCIS (Netherlands)

    Arroyo Ohori, G.A.K.

    2016-01-01

    Our world is three-dimensional and complex, continuously changing over time and appearing different at different scales. Yet, when we model it in a computer using Geographic Information Systems (GIS), we mostly use 2D representations, which essentially consist of linked points, lines and polygons. T

  13. Representing Historical Knowledge in Geographic Information Systems

    Science.gov (United States)

    Grossner, Karl Eric

    2010-01-01

    A growing number of historical scholars in social science and humanities fields are using geographic information systems (GIS) to help investigate spatial questions and map their findings. The nature of historical data and historiographic practices present several challenges in using GIS that have been addressed only partially to date. For…

  14. Geographical information modelling for land resource survey

    NARCIS (Netherlands)

    Bruin, de S.

    2000-01-01

    The increasing popularity of geographical information systems (GIS) has at least three major implications for land resources survey. Firstly, GIS allows alternative and richer representation of spatial phenomena than is possible with the traditional paper map. Secondly, digital technology has improv

  15. Geography and Geographical Information Science: Interdisciplinary Integrators

    Science.gov (United States)

    Ellul, Claire

    2015-01-01

    To understand how Geography and Geographical Information Science (GIS) can contribute to Interdisciplinary Research (IDR), it is relevant to articulate the differences between the different types of such research. "Multidisciplinary" researchers work in a "parallel play" mode, completing work in their disciplinary work streams…

  16. A Systems Perspective on Volunteered Geographic Information

    Directory of Open Access Journals (Sweden)

    Victoria Fast

    2014-12-01

    Full Text Available Volunteered geographic information (VGI is geographic information collected by way of crowdsourcing. However, the distinction between VGI as an information product and the processes that create VGI is blurred. Clearly, the environment that influences the creation of VGI is different than the information product itself, yet most literature treats them as one and the same. Thus, this research is motivated by the need to formalize and standardize the systems that support the creation of VGI. To this end, we propose a conceptual framework for VGI systems, the main components of which—project, participants, and technical infrastructure—form an environment conducive to the creation of VGI. Drawing on examples from OpenStreetMap, Ushahidi, and RinkWatch, we illustrate the pragmatic relevance of these components. Applying a system perspective to VGI allows us to better understand the components and functionality needed to effectively create VGI.

  17. An Approach for Geographical Information Retrieval with LDA Topic Analysis%一种结合LDA主题分析的地理信息检索方法

    Institute of Scientific and Technical Information of China (English)

    盖森; 刘建忠; 熊伟; 孙晨; 张心悦

    2015-01-01

    地理信息检索可以根据用户查询请求在文档集中检索出与其空间相关的信息,是信息检索领域一个重要的研究方向。传统的地理信息检索模型,将地理信息与主题信息分开考虑,忽略了两者之间的关系。针对该问题,提出一种结合LDA主题分析的地理信息检索改进方法。首先,通过LDA主题分析对检索文档集进行噪音剔除,然后挖掘查询请求和检索文档中地理信息和主题信息之间的关系,相似度计算采用夹角余弦和KL距离两种计算方法,并附加到查询请求和检索文档之间的相似度计算当中。此处对搜狗文本分类语料库精简版和复旦文本分类测试语料库进行了LDA主题分析,并进行了检索测试。实验表明改进模型能够较好地衡量地理信息与主题信息之间的关系,提高了检索的查准率。%Geographical information retrieval can be used to retrieve spatial related information from the document collection according to the user query, which is an important research area of information retrieval. Conventional geographical information retrieval model deals with the geographical information and topic information separately, which ignores their relationship. Aiming at this problem, an improved settlement was put forward. At first, LDA topic analysis was used to remove noise of words and then exploit the relationship between geographical information and topic information in the query request and documents. Similarity was calculated through cosine and KL dis-tance, which was attached to the comprehensive similarity. To terrify this method, the lite version of Sogou text categorization corpus and the Fudan text categorization testing corpus were applied with LDA topic analysis. The experimental results reveal that the improved model can measure the relationship between geographical information and topic information acceptably and improve the precision ratio.

  18. GIS [geographic information system], EDA [exploratory data analysis] and inductive modelling: A methodology for the regional analysis of the East Coast Iceberg Scour Database

    Energy Technology Data Exchange (ETDEWEB)

    Simms, A.E.

    1993-01-01

    A study of iceberg scour data suggests that a combination of geographic information systems (GIS), exploratory data analysis (EDA), and inductive modelling provide a comprehensive approach to the understanding of the spatial relationship between iceberg scour variables and seabed information. GIS provides a deductive tool which permits the integration and spatial analysis of point, line and area data affiliated with iceberg scour variables and seabed information. EDA provides resistant summary statistics that are not influenced by extreme value ranges in the data. The integration of GIS and EDA provides a method whereby the spatial distribution of extreme events and resistant summary statistics can be visually examined. Inductive modelling through classification and regression tree algorithms permit simultaneous multivariate analysis of nominal, ordinal and interval iceberg scour and seabed data. This method is not constrained by limitations associated with multivariate linear models. Results are expressed as statistically significant decision trees and natural language IF...THEN rules. The methodology was applied to the Baffin Shelf, Saglek Bank and Grand Bank. Extreme values were found for iceberg scour variables in all three areas. Simple bivariate relationships cannot be used to explain regional variations in scour frequency and variation. 101 refs., 109 figs., 64 tabs.

  19. Geographical information modelling for land resource survey

    OpenAIRE

    Bruin, de, B.

    2000-01-01

    The increasing popularity of geographical information systems (GIS) has at least three major implications for land resources survey. Firstly, GIS allows alternative and richer representation of spatial phenomena than is possible with the traditional paper map. Secondly, digital technology has improved the accessibility of ancillary data, such as digital elevation models and remotely sensed imagery, and the possibilities of incorporating these into target database production. Thirdly, owing to...

  20. Geographic Information Systems in Mine Action

    OpenAIRE

    Lacroix, Pierre Marcel Anselme; De Santis, Angela; Eriksson, Daniel; Cottray, Olivier

    2013-01-01

    This issue brief illustrates several possible applications of geographic information systems (GIS) in mine action. By producing visual, quantifiable results, GIS tools can help country programme managers, regional office managers, operations managers, operations officers and IMSMA officers make improved decisions. By integrating data from various sources and domains, GIS opens demining processes (eg prioritisation and tasking, demining capacity assessment, operational planning etc) to a wide ...

  1. Specifying Geographic Information - Ontology, Knowledge Representation, and Formal Constraints

    DEFF Research Database (Denmark)

    Christensen, Jesper Vinther

    2007-01-01

    of domains and conceptualization of these. The thesis contributes a formalization of what is understood by domain models and conceptual models, when the focus is on geographic information. Moreover, it is shown how specifications for geographic information are related to this representational system...... of requirements and rules, building on terms from the domain and concept ontologies. In combination with the theoretical basis the analysis is used for developing an underlying model of notions, which defines the individual elements in a specification and the relations between them. In the chapters of the thesis...... this underlying model is extended to include a number of components, which each contribute to the model being able to form the basis of a strong and productive specification tool for the making and maintenance of specifications for geographic information. These components among others include description...

  2. Geographic Information Systems and Web Page Development

    Science.gov (United States)

    Reynolds, Justin

    2004-01-01

    The Facilities Engineering and Architectural Branch is responsible for the design and maintenance of buildings, laboratories, and civil structures. In order to improve efficiency and quality, the FEAB has dedicated itself to establishing a data infrastructure based on Geographic Information Systems, GIs. The value of GIS was explained in an article dating back to 1980 entitled "Need for a Multipurpose Cadastre which stated, "There is a critical need for a better land-information system in the United States to improve land-conveyance procedures, furnish a basis for equitable taxation, and provide much-needed information for resource management and environmental planning." Scientists and engineers both point to GIS as the solution. What is GIS? According to most text books, Geographic Information Systems is a class of software that stores, manages, and analyzes mapable features on, above, or below the surface of the earth. GIS software is basically database management software to the management of spatial data and information. Simply put, Geographic Information Systems manage, analyze, chart, graph, and map spatial information. At the outset, I was given goals and expectations from my branch and from my mentor with regards to the further implementation of GIs. Those goals are as follows: (1) Continue the development of GIS for the underground structures. (2) Extract and export annotated data from AutoCAD drawing files and construct a database (to serve as a prototype for future work). (3) Examine existing underground record drawings to determine existing and non-existing underground tanks. Once this data was collected and analyzed, I set out on the task of creating a user-friendly database that could be assessed by all members of the branch. It was important that the database be built using programs that most employees already possess, ruling out most AutoCAD-based viewers. Therefore, I set out to create an Access database that translated onto the web using Internet

  3. Complementarity of Historic Building Information Modelling and Geographic Information Systems

    Science.gov (United States)

    Yang, X.; Koehl, M.; Grussenmeyer, P.; Macher, H.

    2016-06-01

    In this paper, we discuss the potential of integrating both semantically rich models from Building Information Modelling (BIM) and Geographical Information Systems (GIS) to build the detailed 3D historic model. BIM contributes to the creation of a digital representation having all physical and functional building characteristics in several dimensions, as e.g. XYZ (3D), time and non-architectural information that are necessary for construction and management of buildings. GIS has potential in handling and managing spatial data especially exploring spatial relationships and is widely used in urban modelling. However, when considering heritage modelling, the specificity of irregular historical components makes it problematic to create the enriched model according to its complex architectural elements obtained from point clouds. Therefore, some open issues limiting the historic building 3D modelling will be discussed in this paper: how to deal with the complex elements composing historic buildings in BIM and GIS environment, how to build the enriched historic model, and why to construct different levels of details? By solving these problems, conceptualization, documentation and analysis of enriched Historic Building Information Modelling are developed and compared to traditional 3D models aimed primarily for visualization.

  4. Teaching Poverty with Geographic Visualization and Geographic Information Systems (GIS): A Case Study of East Buffalo and Food Access

    Science.gov (United States)

    Gjesfjeld, Christopher D.; Jung, Jin-Kyu

    2014-01-01

    Although various methods have been used to teach about poverty in the social work classroom (e.g., quantitative, historical, and qualitative), the use of geographic visualization and geographic information systems (GIS) has become a relatively new method. In our analysis of food access on the East Side of Buffalo, New York, we demonstrate the…

  5. Artificial Intelligence in geospatial analysis: applications of self-organizing maps in the context of geographic information science.

    OpenAIRE

    Henriques, Roberto André Pereira

    2011-01-01

    A thesis submitted in partial fulfilment of the requirements for the degree of Doctor of Philosophy in Information Systems. The size and dimensionality of available geospatial repositories increases every day, placing additional pressure on existing analysis tools, as they are expected to extract more knowledge from these databases. Most of these tools were created in a data poor environment and thus rarely address concerns of efficiency, dimensionality and automatic exploration. In ...

  6. Cartography and Geographic Information Science in Current Contents

    Directory of Open Access Journals (Sweden)

    Nedjeljko Frančula

    2009-12-01

    Full Text Available The Cartography and Geographic Information Science (CaGIS journal was published as The American Cartographer from 1974 to 1989, after that as Cartography and Geographic Information System, and since then has been published with its current name. It is published by the Cartography and Geographic Information Society, a member of the American Congress on Surveying and Mapping.

  7. Correlation Assessment of Climate and Geographic Distribution of Tuberculosis Using Geographical Information System (GIS

    Directory of Open Access Journals (Sweden)

    Reza BEIRANVAND

    2016-02-01

    Full Text Available Background: Tuberculosis (TB spread pattern is influenced by geographic and social factors. Nowadays Geographic Information System (GIS is one of the most important epidemiological instrumentation identifying high-risk population groups and geographic areas of TB. The aim of this study was to determine the correlation between climate and geographic distribution of TB in Khuzestan Province using GIS during 2005-2012.Methods: Through an ecological study, all 6363 patients with definite diagnosis of TB from 2005 until the end of September 2012 in Khuzestan Province, southern Iran were diagnosed. Data were recorded using TB- Register software. Tuberculosis incidence based on the climate and the average of annual rain was evaluated using GIS. Data were analyzed through SPSS software. Independent t-test, ANOVA, Linear regression, Pearson and Eta correlation coefficient with a significance level of less than 5% were used for the statistical analysis.Results: The TB incidence was different in various geographic conditions. The highest mean of TB cumulative incidence rate was observed in extra dry areas (P= 0.017. There was a significant inverse correlation between annual rain rate and TB incidence rate (R= -0.45, P= 0.001. The lowest TB incidence rate (0-100 cases per 100,000 was in areas with the average of annual rain more than 1000 mm (P= 0.003.Conclusion: The risk of TB has a strong relationship with climate and the average of annual rain, so that the risk of TB in areas with low annual rainfall and extra dry climate is more than other regions. Services and special cares to high-risk regions of TB are recommended.Keywords: Annual rain, Climatic processes, Geographic information systems, Tuberculosis

  8. Description and analysis of the consequences of the housing Boom in Asturias using Geographical Information Systems, 1996-2006

    Directory of Open Access Journals (Sweden)

    Víctor González Marroquín

    2013-01-01

    Full Text Available The period between 2000 and 2007 was a period in which Spain was growing in a bubble around the construction sector driven by the boom in real estate and the high growth rate of public infrastructures. The macroeconomic consequences of this unbalanced growth of the construction are well known but the consequences for urban planning have been less studied. Although Asturias is one of the Spanish regions with the lower real estate bubble is clear that this region has participated with the national trend. The characteristics of this region make it particularly interesting for analysis due to the development of a polycentric conurbation in the central area and to the coexistence of different types of urban development in a small space. This paper proposes a methodology based on the description and analysis of information contained in the referenced digital cartography. Through the classification and interpretation of the píxels of the ortho-photos for Asturias we can identify how is the urban expansion distinguishing between industrial and urban uses of the new urban land. Applying statistical analysis with models that include spatial dependence of the information we can identify the causes of urban growth and describe the different patterns that were followed. We identify the sources affected by processes of real estate bubbles and the urban morphology that is consolidated as a result, among other things, of a reduce coordination between the municipalities of the asturian central area.

  9. GEOMORPHOLOGY USING GEOGRAPHIC INFORMATION SYSTEM AND GLOBEL MAPPER

    OpenAIRE

    Emad Akawwi

    2013-01-01

    An effort has been made to evaluate drainage morphometry and its influence on landform processes, geology and erosion characteristics in Jordan Valley and surrounding area. Geological maps 1:50,000 scale and the professional Google Earth images were used for analysis of various morphometric, lithological and landform characteristics of Jordan Valley basin. Morphometric analysis was carried out at sub basin level using Geographic Information Systems (GIS) and Globel Mapper (GM) to analyze the ...

  10. Geographical Information Analysis of Tsunami Flooded Area by the Great East Japan Earthquake Using Mobile Mapping System

    Science.gov (United States)

    Koarai, M.; Okatani, T.; Nakano, T.; Nakamura, T.; Hasegawa, M.

    2012-07-01

    The great earthquake occurred in Tohoku District, Japan on 11th March, 2011. This earthquake is named "the 2011 off the Pacific coast of Tohoku Earthquake", and the damage by this earthquake is named "the Great East Japan Earthquake". About twenty thousand people were killed or lost by the tsunami of this earthquake, and large area was flooded and a large number of buildings were destroyed by the tsunami. The Geospatial Information Authority of Japan (GSI) has provided the data of tsunami flooded area interpreted from aerial photos taken just after the great earthquake. This is fundamental data of tsunami damage and very useful for consideration of reconstruction planning of tsunami damaged area. The authors analyzed the relationship among land use, landform classification, DEMs data flooded depth of the tsunami flooded area by the Great East Japan Earthquake in the Sendai Plain using GIS. Land use data is 100 meter grid data of National Land Information Data by the Ministry of Land, Infrastructure, Transportation and Tourism (MLIT). Landform classification data is vector data of Land Condition Map produced by GSI. DEMs data are 5 meters grid data measured with LiDAR by GSI after earthquake. Especially, the authors noticed the relationship between tsunami hazard damage and flooded depth. The authors divided tsunami damage into three categories by interpreting aerial photos; first is the completely destroyed area where almost wooden buildings were lost, second is the heavily damaged area where a large number of houses were destroyed by the tsunami, and third is the flooded only area where houses were less destroyed. The flooded depth was measured by photogrammetric method using digital image taken by Mobile Mapping System (MMS). The result of these geographic analyses show the distribution of tsunami damage level is as follows: 1) The completely destroyed area was located within 1km area from the coastline, flooded depth of this area is over 4m, and no relationship

  11. A situated knowledge representation of geographical information

    Energy Technology Data Exchange (ETDEWEB)

    Gahegan, Mark N.; Pike, William A.

    2006-11-01

    In this paper we present an approach to conceiving of, constructing and comparing the concepts developed and used by geographers, environmental scientists and other earth science researchers to help describe, analyze and ultimately understand their subject of study. Our approach is informed by the situations under which concepts are conceived and applied, captures details of their construction, use and evolution and supports their ultimate sharing along with the means for deep exploration of conceptual similarities and differences that may arise among a distributed network of researchers. The intent here is to support different perspectives onto GIS resources that researchers may legitimately take, and to capture and compute with aspects of epistemology, to complement the ontologies that are currently receiving much attention in the GIScience community.

  12. Fundamental problems on scale of geographical information science

    Science.gov (United States)

    Liu, Kai; Wu, Hehai; Hu, Jie

    2007-06-01

    Traditionally, the description of the scale of geographical information is mainly concerned with spatiality and its temporal character and semantic character is ignored. With a few of new techniques and way such as 3D geographical information system, temporal geographical information system, virtual geographical environment, electronic map appears, the traditional description of scale of geographical information shows its deficiencies to make certain of every aspect of it. At first, in this paper we try to extend the connotation and the dimension of scale of geographical information to full the need of describing the every aspects of it, and give three-tiered conceptualization of its scale as: kinds of scale; dimensions of scale; components of scale. The dimension of scale of geographical information is consisted of spatial dimension, temporal dimension and semantic dimension. The classifications of scale of geographical information are of phenomena scale, measure scale and token scale. The components of scale of geographical information are of extension, granularity (resolution) and interval. It is through the Cartesian product of kinds of scale and components of scale can we define the particulars of every aspects of scale of geographical information. At last in this paper the transform of scale of geographical information and issue of scale choice is discussed.

  13. Information management in disaster and development : geographic information systems

    OpenAIRE

    San Martin, Roberto

    2014-01-01

    Mestrado em Desenvolvimento e Cooperação Internacional This research considers the theoretical and practical link between long-term sustainable development and disaster management. The aim is to develop a theoretical framework and a methodology which allows the use of Geographic Information Systems (GIS) to manage the related information. Literature review leads us to understand development and disaster management as part of a learning cycle. Within this context, a common approach to infor...

  14. Geodemography: Land cover, geographical information systems and population distribution

    Directory of Open Access Journals (Sweden)

    Francisco J. Goerlich Gisbert

    2013-01-01

    Full Text Available This paper examines the recent application of the Geographical Information Systems (GIS to the analysis of population distribution. We mention the efforts of the National Statistical Institutes in this direction boosted by the last census 2011.The stating point is a growing need to have available population figures for areas not related to administrative boundaries, either user defined zones or in grid format.This allows a convenient zonal system to combine demographic characteristics with environmental and pure geographic data, so the relation between the man and the environment can be analyzed in a unified way.Eventually, we offer a practical illustration of the interactions between GIS techniques and administrative population data in the study of spatial population distribution: We build a density grid for Spain by dasymetric methods from census tracts population data and Land Cover and Use Information System of Spain (SIOSE.The analysis is done within the spatial reference framework of the European Union.

  15. U.S.-Mexico Border Geographic Information System

    Science.gov (United States)

    Parcher, Jean W.

    2008-01-01

    Geographic Information Systems (GIS) and the development of extensive geodatabases have become invaluable tools for addressing a variety of contemporary societal issues and for making predictions about the future. The United States-Mexico Geographic Information System (USMX-GIS) is based on fundamental datasets that are produced and/or approved by the national geography agencies of each country, the U.S. Geological Survey (USGS) and the Instituto Nacional de Estadistica Y Geografia (INEGI) of Mexico, and the International Boundary and Water Commission (IBWC). The data are available at various scales to allow both regional and local analysis. The USGS and the INEGI have an extensive history of collaboration for transboundary mapping including exchanging digital technology and developing methods for harmonizing seamless national level geospatial datasets for binational environmental monitoring, urban growth analysis, and other scientific applications.

  16. Volunteered Geographic Information in Natural Hazard Analysis: A Systematic Literature Review of Current Approaches with a Focus on Preparedness and Mitigation

    Directory of Open Access Journals (Sweden)

    Carolin Klonner

    2016-06-01

    Full Text Available With the rise of new technologies, citizens can contribute to scientific research via Web 2.0 applications for collecting and distributing geospatial data. Integrating local knowledge, personal experience and up-to-date geoinformation indicates a promising approach for the theoretical framework and the methods of natural hazard analysis. Our systematic literature review aims at identifying current research and directions for future research in terms of Volunteered Geographic Information (VGI within natural hazard analysis. Focusing on both the preparedness and mitigation phase results in eleven articles from two literature databases. A qualitative analysis for in-depth information extraction reveals auspicious approaches regarding community engagement and data fusion, but also important research gaps. Mainly based in Europe and North America, the analysed studies deal primarily with floods and forest fires, applying geodata collected by trained citizens who are improving their knowledge and making their own interpretations. Yet, there is still a lack of common scientific terms and concepts. Future research can use these findings for the adaptation of scientific models of natural hazard analysis in order to enable the fusion of data from technical sensors and VGI. The development of such general methods shall contribute to establishing the user integration into various contexts, such as natural hazard analysis.

  17. ORNL and the geographic information systems revolution

    Energy Technology Data Exchange (ETDEWEB)

    Dobson, J.E.; Durfee, R.C.

    1995-12-31

    Explorers from competing teams race to find a mysterious lost city in the heart of Africa. The American team is continuously in touch with its Houston home base through satellite communications. In flight, team leader Karen Ross displays a map of Africa on her computer screen and notes the multicolored lines suggesting different routes from city to city and into the rain forest. Each pathway is accompanied by a precise estimate of travel time to the final destination. Zooming in on the target area, she switches to satellite images and interprets them in shades of blue, purple, and green. At each checkpoint, the team reports its progress and gets a revised estimate of arrival time. Beset by difficulties, the explorers ask for a faster route, but the computer says the alternative is too dangerous. A simulation model with data representing geology, terrain, vegetation, weather, and many other geographic factors predicts local hazards, including the impending eruption of a nearby volcano. The Americans take the faster route anyway and beat the odds. This fictional account of emerging geographic information system (GIS) technologies comes from Michael Crichton`s 1980 novel Congo, which was made into a 1995 movie. The same technologies were highlighted in Clive Cussler`s 1988 techno-thriller Treasure. In reality, GIS technology began more than a quarter of a century ago at key universities and government laboratories in the United States and Canada. Since 1969, Oak Ridge National Laboratory has been among the leading institutions in this diverse, now booming field. GIS has been evolving through new forms and applications ever since.

  18. Stennis Space Center Environmental Geographic Information System

    Science.gov (United States)

    Lovely, Janette; Cohan, Tyrus

    2000-01-01

    As NASA's lead center for rocket propulsion testing, the John C. Stennis Space Center (SSC) monitors and assesses the off-site impacts of such testing through its Environmental Office (SSC-EO) using acoustical models and ancillary data. The SSC-EO has developed a geographical database, called the SSC Environmental Geographic Information System (SSC-EGIS), that covers an eight-county area bordering the NASA facility. Through the SSC-EGIS, the Enivronmental Office inventories, assesses, and manages the nearly 139,000 acres that comprise Stennis Space Center and its surrounding acoustical buffer zone. The SSC-EGIS contains in-house data as well as a wide range of data obtained from outside sources, including private agencies and local, county, state, and U.S. government agencies. The database comprises cadastral/geodetic, hydrology, infrastructure, geo-political, physical geography, and socio-economic vector and raster layers. The imagery contained in the database is varied, including low-resolution imagery, such as Landsat TM and SPOT; high-resolution imagery, such as IKONOS and AVIRIS; and aerial photographs. The SSC-EGIS has been an integral part of several major projects and the model upon which similar EGIS's will be developed for other NASA facilities. The Corps of Engineers utilized the SSC-EGIS in a plan to establish wetland mitigation sites within the SSC buffer zone. Mississippi State University employed the SSC-EGIS in a preliminary study to evaluate public access points within the buffer zone. The SSC-EO has also expressly used the SSC-EGIS to assess noise pollution modeling, land management/wetland mitigation assessment, environmental hazards mapping, and protected areas mapping for archaeological sites and for threatened and endangered species habitats. The SSC-EO has several active and planned projects that will also make use of the SSC-EGIS during this and the coming fiscal year.

  19. A scoping review of geographic information systems in maternal health

    OpenAIRE

    Makanga, Prestige T.; Schuurman, Nadine; von Dadelszen, Peter; Firoz, Tabassum

    2016-01-01

    Background Geographic information systems (GIS) are increasingly recognized tools in maternal health. Objectives To evaluate the use of GIS in maternal health and to identify knowledge gaps and opportunities. Search strategy Keywords broadly related to maternal health and GIS were used to search for academic articles and gray literature. Selection criteria Reviewed articles focused on maternal health, with GIS used as part of the methods. Data collection and analysis Peer reviewed articles (n...

  20. Geographic Names Information System (GNIS) for Lousiana, Geographic NAD83, USGS (2007) [GNIS_LA_USGS_2007

    Data.gov (United States)

    Louisiana Geographic Information Center — The Geographic Names Information System (GNIS) is the Federal standard for geographic nomenclature. The U.S. Geological Survey developed the GNIS for the U.S. Board...

  1. Use of geographic information systems and spatial analysis in area-wide integrated pest management programmes that integrate the sterile insect technique

    International Nuclear Information System (INIS)

    The advantages that geographic information systems (GIS) and associated technologies can offer, in terms of the design and implementation of area-wide programmes of insect and/or disease suppression, are becoming increasingly recognised, even if the realization of this potential has not been fully exploited and for some area-wide programmes adoption appears to be progressing slowly. This chapter provides a basic introduction to the science of GIS, Global Positioning System (GPS), and satellite remote sensing (RS), and reviews the principal ways in which these technologies can be used to assist various stages of development of the sterile insect technique (SIT) as part of area-wide integrated pest management (AW-IPM) programmes - from the selection of project sites, and feasibility assessments and planning of pre-intervention surveys, to the monitoring and analysis of insect suppression programmes, and the release of sterile insects. Potential barriers to the successful deployment of GIS tools are also discussed. (author)

  2. Landscape Analysis of Geographical Names in Hubei Province, China

    Directory of Open Access Journals (Sweden)

    Xixi Chen

    2014-12-01

    Full Text Available Hubei Province is the hub of communications in central China, which directly determines its strategic position in the country’s development. Additionally, Hubei Province is well-known for its diverse landforms, including mountains, hills, mounds and plains. This area is called “The Province of Thousand Lakes” due to the abundance of water resources. Geographical names are exclusive names given to physical or anthropogenic geographic entities at specific spatial locations and are important signs by which humans understand natural and human activities. In this study, geographic information systems (GIS technology is adopted to establish a geodatabase of geographical names with particular characteristics in Hubei Province and extract certain geomorphologic and environmental factors. We carry out landscape analysis of mountain-related geographical names and water-related geographical names respectively. In the end, we calculate the information entropy of geographical names of each county to describe the diversity and inhomogeneity of place names in Hubei province. Our study demonstrates that geographical names represent responses to the cultural landscape and physical environment. The geographical names are more interesting in specific landscapes, such as mountains and rivers.

  3. Crowdsourcing, Citizen Science or Volunteered Geographic Information? The Current State of Crowdsourced Geographic Information

    Directory of Open Access Journals (Sweden)

    Linda See

    2016-04-01

    Full Text Available Citizens are increasingly becoming an important source of geographic information, sometimes entering domains that had until recently been the exclusive realm of authoritative agencies. This activity has a very diverse character as it can, amongst other things, be active or passive, involve spatial or aspatial data and the data provided can be variable in terms of key attributes such as format, description and quality. Unsurprisingly, therefore, there are a variety of terms used to describe data arising from citizens. In this article, the expressions used to describe citizen sensing of geographic information are reviewed and their use over time explored, prior to categorizing them and highlighting key issues in the current state of the subject. The latter involved a review of ~100 Internet sites with particular focus on their thematic topic, the nature of the data and issues such as incentives for contributors. This review suggests that most sites involve active rather than passive contribution, with citizens typically motivated by the desire to aid a worthy cause, often receiving little training. As such, this article provides a snapshot of the role of citizens in crowdsourcing geographic information and a guide to the current status of this rapidly emerging and evolving subject.

  4. Spatial Analysis in Educational Administration: Exploring the Role of G.I.S. (Geographical Information Systems) as an Evaluative Tool in the Public School Board Setting.

    Science.gov (United States)

    Brown, Robert S.; Baird, William; Rosolen, Lisa

    In January 1998, seven school boards amalgamated to form the Toronto District School Board, a board responsible for 600 schools. To deal with the complexities of the new entity, researchers have been using geographical information systems (GIS). GIS are computer-based tools for mapping. They store information as a collection of thematic layers or…

  5. Representing Uncertain Geographical Information with Algorithmic Map Caricatures

    Science.gov (United States)

    Brunsdon, Chris

    2016-04-01

    A great deal of geographical information - including the results ion data analysis - is imprecise in some way. For example the the results of geostatistical interpolation should consist not only of point estimates of the value of some quantity at points in space, but also of confidence intervals or standard errors of these estimators. Similarly, mappings of contour lines derived form such interpolations will also be characterised by uncertainty. However, most computerized cartography tools are designed to provide 'crisp' representations of geographical information, such as sharply drawn lines, or clearly delineated areas. In this talk, the use of 'fuzzy' or 'sketchy' cartographic tools will be demonstrated - where maps have a hand-drawn appearance and the degree of 'roughness' and other related characteristics can be used to convey the degree of uncertainty associated with estimated quantities being mapped. The tools used to do this are available as an R package, which will be described in the talk.

  6. Generalisation of geographic information cartographic modelling and applications

    CERN Document Server

    Mackaness, William A; Sarjakoski, L Tiina

    2011-01-01

    Theoretical and Applied Solutions in Multi Scale MappingUsers have come to expect instant access to up-to-date geographical information, with global coverage--presented at widely varying levels of detail, as digital and paper products; customisable data that can readily combined with other geographic information. These requirements present an immense challenge to those supporting the delivery of such services (National Mapping Agencies (NMA), Government Departments, and private business. Generalisation of Geographic Information: Cartographic Modelling and Applications provides detailed review

  7. Semantic Representation of Moving Entities for Enhancing Geographical Information Systems

    Directory of Open Access Journals (Sweden)

    Yuniel E. Proenza Arias

    2013-09-01

    Full Text Available Geographical Information Systems have become useful for fleet control, hurricane tracking, tourism analysis and some other critical fields that include decision making processes. The analysis have been mainly focused on historical movement, movement prediction and motion patterns detection, which have a tremendous impact in traffic analysis, finding locations of interest and most visited places, estimating hurricane damage and so more. Recently, ontology driven GIS have shown to the scientific community the advantages of making semantic analysis based in ontology models. In this work we present the advantages of using ontologies for representing moving entities and enriching information with semantics. We also present some experimental results of using an ontological model and making semantic queries over the laying information, encouraging on several obtained benefits and aiming to state a basis for enhanced ontology driven GIS.

  8. A Secured Framework for Geographical Information Applications on Web

    Directory of Open Access Journals (Sweden)

    Mennatallah H. Ibrahim

    2014-01-01

    Full Text Available Current geographical information applications increasingly require managing spatial data through the Web. Users of geographical information application need not only to display the spatial data but also to interactively modify them. As a result, the security risks that face geographical information applications are also increasing. In this paper, a secured framework is proposed. The proposed framework's goal is, providing a fine grained access control to web-based geographic information applications. A case study is finally applied to prove the proposed framework feasibility and effectiveness.

  9. A Geographic Information Systems (GIS)-based analysis of modern South African rodent distributions, habitat use, and environmental tolerances.

    Science.gov (United States)

    Campbell, Timothy L; Lewis, Patrick J; Thies, Monte L; Williams, Justin K

    2012-11-01

    GOALS OF THIS STUDY WERE TO: (1) develop distributional maps of modern rodent genera throughout the countries of South Africa, Lesotho, and Swaziland by georeferencing museum specimens; (2) assess habitat preferences for genera by cross-referencing locality position with South African vegetation; and (3) identify mean annual precipitation and temperature range where the genera are located. Conterminous South Africa including the countries of Lesotho and Swaziland Digital databases of rodent museum specimens housed in the Ditsong National Museum of Natural History, South Africa (DM), and the Division of Mammals, National Museum of Natural History, Smithsonian Institution, United States (NMNH), were acquired and then sorted into a subset of specimens with associated coordinate data. The coordinate data were then used to develop distributional maps for the rodent genera present within the study area. Percent habitat occupation and descriptive statistics for six climatic variables were then determined for each genus by cross-referencing locality positions with vegetation and climatic maps. This report presents a series of maps illustrating the distribution of 35 rodent genera based on 19,471 geo-referenced specimens obtained from two major collections. Inferred habitat use by taxon is provided for both locality and specimen percent occurrence at three hierarchical habitat levels: biome, bioregion, and vegetation unit. Descriptive statistics for six climatic variables are also provided for each genus based on locality and specimen percent incidence. As rodent faunas are commonly used in paleoenvironmental reconstructions, an accurate assessment of rodent environmental tolerance ranges is necessary before confidence can be placed in an actualistic model. While the data presented here represent only a subset of the modern geographic distributions for many of the taxa examined, a wide range of environmental regimes are observed, suggesting that more research is necessary

  10. Geographical information system analysis for oceanographic parameters in the coastal waters of Goa, India - A case study

    Digital Repository Service at National Institute of Oceanography (India)

    Suryanarayana, A.; Joglekar, V.V.

    , temperature and salinity and other chemical parameters are converted to raster format. The procedure employed can be applied to other environmental management tasks like risk analysis, fishery resources etc. This paper mainly emphasis on the methodology...

  11. Using Geographic Information Systems and Spatial Analysis Methods to Assess Household Water Access and Sanitation Coverage in the SHINE Trial

    OpenAIRE

    Ntozini, Robert; Marks, Sara J.; Mangwadu, Goldberg; Mbuya, Mduduzi N. N.; Gerema, Grace; Mutasa, Batsirai; Julian, Timothy R.; Schwab, Kellogg J.; Humphrey, Jean H.; Zungu, Lindiwe I.

    2015-01-01

    Access to water and sanitation are important determinants of behavioral responses to hygiene and sanitation interventions. We estimated cluster-specific water access and sanitation coverage to inform a constrained randomization technique in the SHINE trial. Technicians and engineers inspected all public access water sources to ascertain seasonality, function, and geospatial coordinates. Households and water sources were mapped using open-source geospatial software. The distance from each hous...

  12. Review of geographic processing techniques applicable to regional analysis

    Energy Technology Data Exchange (ETDEWEB)

    Durfee, R.C.

    1988-02-01

    Since the early 1970s regional environmental studies have been carried out at the Oak Ridge National Laboratory using computer-assisted techniques. This paper presents an overview of some of these past experiences and the capabilities developed at the Laboratory for processing, analyzing, and displaying geographic data. A variety of technologies have resulted such as computer cartography, image processing, spatial modeling, computer graphics, data base management, and geographic information systems. These tools have been used in a wide range of spatial applications involving facility siting, transportation routing, coal resource analysis, environmental impacts, terrain modeling, inventory development, demographic studies, water resource analyses, etc. The report discusses a number of topics dealing with geographic data bases and structures, software and processing techniques, hardware systems, models and analysis tools, data acquisition techniques, and graphical display methods. Numerous results from many different applications are shown to aid the reader interested in using geographic information systems for environmental analyses. 15 refs., 64 figs., 2 tabs.

  13. Integrating methods from IR and QA for geographic information retrieval

    OpenAIRE

    LEVELING, JOHANNES; Hartrumpf, Sven

    2009-01-01

    This paper describes the participation of GIRSA at Geo- CLEF 2008, the geographic information retrieval task at CLEF. GIRSA combines information retrieval (IR) on geographically annotated data and question answering (QA) employing query decomposition. For the monolingual German experiments, several parameter settings were varied: using a single index or separate indexes for content and geographic annotation, using complex term weighting, adding location names from the topic narrative, a...

  14. Geographic information systems and multivariate analysis to evaluate fecal bacterial pollution in coastal waters of Andaman, India.

    Science.gov (United States)

    Dheenan, Palaiyaa Sukumaran; Jha, Dilip Kumar; Das, Apurba Kumar; Vinithkumar, Nambali Valsalan; Devi, Marimuthu Prashanthi; Kirubagaran, Ramalingam

    2016-07-01

    Urbanization of coastal areas in recent years has driven us to consider a new approach for visually delineating sites that are contaminated with fecal bacteria (FB) in the coastal waters of the Andaman Islands in India. Geo-spatial analysis demarcated harbor, settlement, and freshwater/discharge influenced zones as hot spots for FB, while the open sea was demarcated as a cold spot. The land use types, such as developed and agriculture, with more anthropogenic activities increasing the FB counts while open sea showed the least FB. Box whisker plot indicated an increasing FB trend in the coastal waters during monsoon. Furthermore, principal component analysis revealed 67.35%, 78.62% and 70.43% of total variance at Port Blair, Rangat and Aerial bays, respectively. Strong factor loading was observed for depth (0.95), transparency (0.93), dissolved oxygen (0.93) and fecal streptococci (0.85). Distance proximity analysis revealed that fecal contaminations diluted significantly (P < 0.05) at the distance of 2.1 km toward the deeper or open sea water. This study demonstrates the effectiveness of an integrated approach in identifying the sources of fecal contamination and thus helping in better monitoring and management of coastal waters. PMID:27061474

  15. 选择电力地理信息系统平台的分析%Analysis of Choosing the Platform in Power Geographic Information System

    Institute of Scientific and Technical Information of China (English)

    刘理峰; 孙才新; 周泉; 金学军; 李小平

    2001-01-01

    Geographic Information System(GIS) is playing more and more important role in information management of power system. The popular GIS platform products include GeoMedia, Arc/Info, MapInfo and MicroStation. The choosing and using of power GIS platform should obey the rule in power system reality. Based on their preponderant application in geographic industry, Arc/Info and MapInfo have been successfully used in power system. The scheme of power GIS platform is put forward in this paper, referenced to the judgement and analysis of these prevailing platform, and the example of "GIS information system in Chongqing YuBei Power Supply Bureau" is given. This example shows the powerful twice developing ability, the profound network topology analysis ability of this method, which could also satisfy the needs of excessive and separate work nodes and parallel operation. All researches showed in this paper demonstrate the method could satisfy the need of power GIS.%地理信息系统(GIS)在电力系统信息管理中起着越来越重要的作用。目前GIS平台主要有GeoMedia、Arc/Info、MapInfo和MicroStation四种产品。电力GIS平台的选择和使用必须从电力系统实际出发,借助于各自在地理行业的优势,Arc/Info和MapInfo产品已成功进入电力市场。通过对目前几种GIS通用平台的深入比较、分析,提出了一种基于GeoMedia的电力GIS平台解决方案,并介绍了该平台方案在“重庆渝北供电局GIS综合信息系统”中的应用。应用表明该方案具有强大的二次开发能力,满足工作节点多且分散、并发操作强的要求,具有良好的网络拓扑分析功能,能够满足电力GIS的要求。

  16. Geographical Information Systems: A Tool for Institutional Research.

    Science.gov (United States)

    Prather, James E.; Carlson, Christina E.

    This paper addresses the application of Geographical Information Systems (GIS), a computerized tool for associating key information by geographical location, to the institutional research function at institutions of higher education. The first section investigates the potential of GIS as an analytical and planning tool for institutional…

  17. Using Geographic Information Systems and Spatial Analysis Methods to Assess Household Water Access and Sanitation Coverage in the SHINE Trial.

    Science.gov (United States)

    Ntozini, Robert; Marks, Sara J; Mangwadu, Goldberg; Mbuya, Mduduzi N N; Gerema, Grace; Mutasa, Batsirai; Julian, Timothy R; Schwab, Kellogg J; Humphrey, Jean H; Zungu, Lindiwe I

    2015-12-15

    Access to water and sanitation are important determinants of behavioral responses to hygiene and sanitation interventions. We estimated cluster-specific water access and sanitation coverage to inform a constrained randomization technique in the SHINE trial. Technicians and engineers inspected all public access water sources to ascertain seasonality, function, and geospatial coordinates. Households and water sources were mapped using open-source geospatial software. The distance from each household to the nearest perennial, functional, protected water source was calculated, and for each cluster, the median distance and the proportion of households within 1500 m of such a water source. Cluster-specific sanitation coverage was ascertained using a random sample of 13 households per cluster. These parameters were included as covariates in randomization to optimize balance in water and sanitation access across treatment arms at the start of the trial. The observed high variability between clusters in both parameters suggests that constraining on these factors was needed to reduce risk of bias. PMID:26602299

  18. A multi-Agent system architecture for geographic information gathering

    Institute of Scientific and Technical Information of China (English)

    高刚毅; 王申康

    2004-01-01

    World Wide Web (WWW) is a vast repository of information, including a great deal of geographic information. But the location and retrieval of geographic information will require a significant amount of time and effort. In addition, different users usually have different views and interests in the same information. To resolve such problems, this paper first proposed a model of geographic information gathering based on multi-Agent (MA) architecture. Then based on this model, we construct a prototype system with GML (Geography Markup Language). This system consists of three tiers-Client, Web Server and Data Resource. Finally, we expatiate on the process of Web Server.

  19. A Cladistic Analysis of Inaequalium (Coscarón & Wygodzinsky, 1984, with Information on Geographical Distribution (Diptera: Simuliidae

    Directory of Open Access Journals (Sweden)

    Strieder MN

    2002-01-01

    Full Text Available The black flies of the genus Inaequalium present a Neotropical distribution, with Panama at the northern limit, and the Argentinian pampas at the southern, but do not occur in the Central Amazon. This study offers a cladistic analysis establishing a hypothesis of relationships between the species of Inaequalium. A total of 37 characters have been considered in order to establish the hypothetic phylogenetic relationships. Cerqueirellum (Py-Daniel, 1983 was considered as outgroup. Data were analyzed using Henning 86 version 1.5. Wich the ie* command and implicit enumeration a unique possible cladogram was obtained in Inaequalium with 52 steps, and a CI of 0.76 and RI of 0.81. Two well-defined clades was obtained in the resulting cladogram, the "botulibranchium" species-group, includes I. travassosi, I. souzalopesi, I. botulibranchium and I. petropoliense, and the "inaequale" species-group, includes I. rappae, I. nahimi, I. inaequale, I. leopoldense, I. subnigrum, I. diversibranchium, I. mariavulcanoae, I. nogueirai, I. beaupertuyi, I. clavibranchium and I. subclavibranchium.

  20. Social Media Geographic Information in Tourism Planning

    Directory of Open Access Journals (Sweden)

    Roberta Floris

    2014-05-01

    Full Text Available Social media are playing an increasingly important role as information resource in tourism both for customers (i.e. the tourists, who gather trustworthy information supporting the choice of destinations and services from peers, and for businesses, which can use the same information for improving their marketing strategies. The use of social media data can also offer new opportunities for decision-support in tourism planning. With improved understanding of the motivations of tourists and tailoring tourism service supply, decision making can be facilitated by emphasizing the strengths of tourist destinations for past and potential visitors. However, this kind of information about tourists perceptions and opinions is not always properly analysed by planners. Understanding the user satisfaction, which depends on factors related to both the location and the services that the local industry proposes, may offer valuable information in tourism planning at regional and local level.  In the light of the above premises, the goal of the study presented in this paper is to propose an integrated approach to investigate the relationships between tourists satisfaction, destination resources and tourism industry for supporting design and decision-making in regional tourism planning. The methodology developed in the study includes data collection from popular tourism social media platforms (i.e. Booking.com and TripAdvisor.com.com, and their integration with territorial and tourism data. Spatial and statistical analysis techniques are then applied to elicit insights from tourists perceptions on success factors which may be used in decision-making and planning support. The case study demonstrates the value of social media data and computational social science techniques in tourism planning. The paper concludes with a critical discussion on the potential of using such an approach in more general urban and regional planning setting.

  1. Order from noise: Toward a social theory of geographic information

    Science.gov (United States)

    Poore, B.S.; Chrisman, N.R.

    2006-01-01

    In the so-called Information Age, it is surprising that the concept of information is imprecisely defined and almost taken for granted. Historic and recent geographic information science (GIScience) literature relies on two conflicting metaphors, often espoused by the same author in adjacent paragraphs. The metaphor of invariance, derived from telecommunications engineering, defines information as a thing to be transported without loss through a conduit. Another metaphor, originating in the utopian movements of the 19th century, locates information within a hierarchy of refinement-a stopping place on the path to convert mere data into higher forms of knowledge and perhaps to wisdom. Both metaphors rely on long-forgotten debates outside geography and preclude us from seeing that there are important social and ethical concerns in the relationship between geographic information technologies and society. We examine the conflicts between competing metaphors and propose a social theory of geographic information. ?? 2006 by Association of American Geographers.

  2. Change of Geographic Information Service Model in Mobile Context

    Institute of Scientific and Technical Information of China (English)

    REN Fu; DU Qingyun

    2005-01-01

    A research on that how the topic of mobility, which is completely different but tightly relevant to space, provides new approaches and methods so as to promote the further development of geographic information services, will accumulate basic experience for different types of relative information systems in the wide fields of location based services. This paper analyzes the meaning of mobility and the change for geographic information service model, it describes the differences and correlation between M-GIS and traditional GIS. It sets a technical framework of geographic information services according to mobile context and provides a case study.

  3. A geographical information system-based analysis of cancer mortality and population exposure to coal mining activities in West Virginia, United States of America

    Directory of Open Access Journals (Sweden)

    Michael Hendryx

    2010-05-01

    Full Text Available Cancer incidence and mortality rates are high in West Virginia compared to the rest of the United States of America. Previous research has suggested that exposure to activities of the coal mining industry may contribute to elevated cancer mortality, although exposure measures have been limited. This study tests alternative specifications of exposure to mining activity to determine whether a measure based on location of mines, processing plants, coal slurry impoundments and underground slurry injection sites relative to population levels is superior to a previously-reported measure of exposure based on tons mined at the county level, in the prediction of age-adjusted cancer mortality rates. To this end, we utilize two geographical information system (GIS techniques – exploratory spatial data analysis and inverse distance mapping – to construct new statistical analyses. Total, respiratory and “other” age-adjusted cancer mortality rates in West Virginia were found to be more highly associated with the GIS-exposure measure than the tonnage measure, before and after statistical control for smoking rates. The superior performance of the GIS measure, based on where people in the state live relative to mining activity, suggests that activities of the industry contribute to cancer mortality. Further confirmation of observed phenomena is necessary with person-level studies, but the results add to the body of evidence that coal mining poses environmental risks to population health in West Virginia.

  4. A geographic information system for local public health policy

    NARCIS (Netherlands)

    J.A. van Oers (Johannes Anna Maria)

    1993-01-01

    textabstractThis book deals with the development and use of a geographic information system for local public health policy. Health differences between populations in different geographical areas, large (countries) or small (city-neighbourhoods) have always been a challenge to epidemiologists and pol

  5. Lived and Imagined: Information and Storytelling in Geographic Systems

    Science.gov (United States)

    Kabisch, Eric Alan

    2011-01-01

    This dissertation investigates the relationship between storytelling and information in the narration of geographic space. While storytelling has historically shaped our understanding of geography, modern practices in data collection, cartography, and geographic visualization enable one-way forms of representation that remove the negotiation and…

  6. Geographic information analysis and web-based geoportals to explore malnutrition in Sub-Saharan Africa: a systematic review of approaches

    OpenAIRE

    Marx, Sabrina; Phalkey, Revati; Aranda-Jan, Clara B.; Profe, Jörn; Sauerborn, Rainer; Höfle, Bernhard

    2014-01-01

    Background Childhood malnutrition is a serious challenge in Sub-Saharan Africa (SSA) and a major underlying cause of death. It is the result of a dynamic and complex interaction between political, social, economic, environmental and other factors. As spatially oriented research has been established in health sciences in recent years, developments in Geographic Information Science (GIScience) provide beneficial tools to get an improved understanding of malnutrition. Methods In order to assess ...

  7. The use of geographical information system in health sector.

    Science.gov (United States)

    Mechili, Aggelos; Zimeras, Stelios; Al-Fantel, Konstantina; Diomidous, Marianna

    2014-01-01

    The provision of health care has undergone radical changes during the last years. Geography plays an important role in understanding the dynamics of health, as well as the reasons why a disease is spreading. In general, a Geographic Information System (GIS) is based on the same principals with a traditional relational database. The main idea behind this study is the methodological approach as far as the implementation of a real- time electronic healthcare record is concerned, for the descriptive statistical analysis that uses geographical information to identify spatial data related to accidents. The purpose of developing such a health care record is to record the patients who were injured in accidents. The database that will be used for the development of the EHR is based on Microsoft Office 2007, which is considered to be one of the best tools for developing databases. The main table of the database includes the fields with demographics, ie name, surname, age, sex, address and place of birth. The primary key of the table Demographics is Patient_ID. The demographics from the table are connected to the table Admission with a relationship type one- to- many. The combination of these features in a graphic representation can be used to display the health problems on the map, so that the proper health policies can be applied. The results of the monitoring could be used as pilot instructions for spatial epidemiological analysis. PMID:25000047

  8. The use of geographical information system in health sector.

    Science.gov (United States)

    Mechili, Aggelos; Zimeras, Stelios; Al-Fantel, Konstantina; Diomidous, Marianna

    2014-01-01

    The provision of health care has undergone radical changes during the last years. Geography plays an important role in understanding the dynamics of health, as well as the reasons why a disease is spreading. In general, a Geographic Information System (GIS) is based on the same principals with a traditional relational database. The main idea behind this study is the methodological approach as far as the implementation of a real- time electronic healthcare record is concerned, for the descriptive statistical analysis that uses geographical information to identify spatial data related to accidents. The purpose of developing such a health care record is to record the patients who were injured in accidents. The database that will be used for the development of the EHR is based on Microsoft Office 2007, which is considered to be one of the best tools for developing databases. The main table of the database includes the fields with demographics, ie name, surname, age, sex, address and place of birth. The primary key of the table Demographics is Patient_ID. The demographics from the table are connected to the table Admission with a relationship type one- to- many. The combination of these features in a graphic representation can be used to display the health problems on the map, so that the proper health policies can be applied. The results of the monitoring could be used as pilot instructions for spatial epidemiological analysis.

  9. Function Analyses of Geographic Information System on Rural Distribution Network

    Institute of Scientific and Technical Information of China (English)

    FANG Junlong; FAN Yongcun; ZHANG Chunmei; GU Shumin

    2006-01-01

    With the actuality and characteristic and requirement of rural power enterprise distribution network management, this article introduced the function of geographic information system on the framework of distribution network, in order to develop rural distribution network.

  10. The application of Yangtze Estuary Tidal Wetlands Geographic Information System

    Institute of Scientific and Technical Information of China (English)

    WANGJun; CHENZhenlou; XUShiyuan; WANGDongqi; LIUJie

    2005-01-01

    Yangtze Estuary Tidal Wetlands Geographic Information System (YETWGIS) is a comprehensive software system for environmental management and decision of Yangtze estuary tidal wetlands. Based on MapObjects components technology, Data Mining technology, mathematical modeling method and Visual Basic language, this software system has many functions such as displaying, editing, querying and searching, spatial statistics and analysis, thematic map compiling, and environmental quality evaluation. This paper firstly outlined the system structure, key techniques, and achieving methods of YETWGIS, and then, described the core modules (the thematic map compiling module and environmental quality evaluation model module) in detail. In addition, based on information entropy model, it thoroughly discussed the methods of environmental quality evaluation and indicators' weight calculation. Finally, by using YETWGIS, this paper analyzed the spatial distribution characteristics of Heavy Metal and Persistent Organic Pollutants (POPs) of the Yangtze estuary tidal wetlands in 2002, and evaluated the environmental quality of the Yangtze estuary tidal wetlands in 2003.

  11. Analysis of the relationships between esophageal cancer cases and climatic factors using a Geographic Information System (GIS): a case study of Ardabil province in Iran.

    Science.gov (United States)

    Ahari, Saeid Sadeghieh; Agdam, Fridoon Babaei; Amani, Firouz; Yazdanbod, Abbas; Akhghari, Leyla

    2013-01-01

    Esophageal cancer is a mjaor health problems in many parts of the world. A geographical information system (GIS) allows investigation of the geographical distribution of diseases. The purpose of the present study was to explore the relationship between esophageal cancer and effective climatic factors using GIS. The dispersion distribution and the relationship between environmental factors effective on cancer were measured using Arc GIS. The highest degree of spread was in Germi town and the least was in Ardabil city. There was a significant relationship between effective environmental factors and esophageal cancer in Ardabil province. The results indicated that environmental factors probably are influential in determining the incidence of esophageal cancer. Also, these results can be considered as a window to future comprehensive research on esophageal cancer and related risk factors. PMID:23679321

  12. Social Media Geographic Information in Tourism Planning

    OpenAIRE

    Roberta Floris; Michele Campagna

    2014-01-01

    Social media are playing an increasingly important role as information resource in tourism both for customers (i.e. the tourists), who gather trustworthy information supporting the choice of destinations and services from peers, and for businesses, which can use the same information for improving their marketing strategies. The use of social media data can also offer new opportunities for decision-support in tourism planning. With improved understanding of the motivations of tourists and tail...

  13. Application of a geographical information system for information management on pulmonary tuberculosis

    Directory of Open Access Journals (Sweden)

    José Danilo Pacheco González

    2010-12-01

    Full Text Available Background: tuberculosis program is a priority for the National Health System in Cuba. The difficulties encountered in dealing with the disease are associated, directly or indirectly, to a restricted knowledge management by the health system. Objective: to implement a geographical information system to manage information on pulmonary tuberculosis. Methods: retrospective, descriptive and correlational study conducted between January 1, 1996 and December 31, 2007. It included the 155 new cases of pulmonary tuberculosis in 15 years old patients and on in the province of Cienfuegos. MapInfo 8.5 software was used to design the geographical information system. Theoretical, empirical and statistical methods were combined. Results: the elimination of the geographical aspect as an obstacle for carrying out preventive actions established in the program and for the stratification of pulmonary tuberculosis according to its incidence in districts and neighbourhoods of the city. Conclusions: the designed geographical information system is an auxiliary technological tool that improves information management on pulmonary tuberculosis in Cienfuegos as the basis for a variety of analysis and the generation of new knowledge.

  14. TIGER5---Extraction of geographic information from the TIGER system

    Energy Technology Data Exchange (ETDEWEB)

    Gryder, R.K.

    1992-03-01

    The need for geographic information in digital form is becoming apparent in many areas, including Emergency Response Planning and Management. The Bureau of Census recognized this need and developed an automated geographic data base, known as Topologically Integrated Geographic Encoding and Referencing (TIGER) System, to produce the geographic products for the 1990 census. The Bureau makes the information available to the public on CD-ROM disks. As distributed, the geographic information is not directly visible, and a program is needed to display the information in a graphic form. MapInfo is a commercially available program that has the capability to display maps and allows the user to perform certain geographic analyses. MapInfo runs on a variety of low-cost platforms that may be found in an average office environment, as well as on high-performance work stations. The TIGER5 program developed by the Emergency Management Information Systems (EMIS) project at Oak Ridge National Laboratory reads files directly from the Census Bureau TIGER/Line CD-ROM and creates MapInfo Exchange Format Files that can be directly imported into MapInfo. The standard default values for scaling parameters are used, and the resulting map is in the same coordinate system as the world and state maps distributed with MapInfo.

  15. Documentation and analysis of a geographic information system application for combining data layers, using nonpoint-source pollution as an example

    Science.gov (United States)

    Kiesler, James L.

    2002-01-01

    A geographical information system application has been developed that allows scientists to combine multiple data layers into a single data layer. This application provides an effective tool for identifying areas where the potential effect of the combination of data layers may be greater than any single data layer. Such a tool is useful in studying an activity that cannot be measured directly. Scientists wanting to identify areas where an activity may have the greatest effect can identify factors that directly or indirectly reflect the effect of the activity being studied. When combined, these factors would identify areas where the potential for the activity to have an effect are greatest.

  16. Research on digital city geographic information common services platform

    Science.gov (United States)

    Chen, Dequan; Wu, Qunyong; Wang, Qinmin

    2008-10-01

    Traditional GIS (Geographic Information System) software development mode exposes many defects that will largely slow down the city informational progress. It is urgent need to build a common application infrastructure for informational project to speed up the development pace of digital city. The advent of service-oriented architecture (SOA) has motivated the adoption of GIS functionality portals that can be executed in distributed computing environment. According to the SOA principle, we bring forward and design a digital city geographic information common services platform which provides application development service interfaces for field users that can be further extended relevant business application. In the end, a public-oriented Web GIS is developed based on the platform for helping public users to query geographic information in their daily life. It indicates that our platform have the capacity that can be integrated by other applications conveniently.

  17. A multi-Agent system architecture for geographic information gathering

    Institute of Scientific and Technical Information of China (English)

    高刚毅; 王申康

    2004-01-01

    World Wide Web(WWW)is a vast repository of information,including a great deal of geographic information.But the location and retrieval of geographic information will require a significant amount of time and effort. In addition,different users usually have different views and interests in the same information. To resolve such problems,this paper first proposed a model of geographic information gathering based on multi-Agent(MA)architecture. Then based on this model,we construct a prototype system with GML(Geography Markup Language). This system consists of three tiers-Client,Web Server and Data Resource. Finally,we expatiate on the process of Web Server.

  18. Usage of the game technologies engines for the purpose of modern geographic information systems creation

    Directory of Open Access Journals (Sweden)

    Zhigalov Kirill

    2016-01-01

    Full Text Available Modern professional geographic information systems significantly lagged behind in quality of 3D graphics, which complicates their full application in the existing conditions. The main differences of the principles of game engines work from the principles of creation of professional geographic information systems structure are considered in the article. These aspects interfere with construction of modern from the graphic point of view, geographic information systems. The analysis of the contradictions considered in article will allow minimizing them at application of game engines (for example, Unity for reduction in cost and acceleration of production of modern GIS of new generation.

  19. A geographical analysis of the Swedish wood fuel market

    International Nuclear Information System (INIS)

    The geographical variation in Swedish wood fuel market characteristics for the district heating sector has been studied using Geographical Information Systems (GIS) and cross-sectional Tobit analysis. The results indicate that local availability and competition for wood fuels influence the wood fuel consumption at inland heating plants. The factors affecting the decision to use wood fuel at heating plants close to seaports, however, were not captured by the model, suggesting that coastal location reduces dependency on the local wood fuel market. The effects of changes in local wood fuel availability on wood fuel use by an inland heating plant are presented and discussed

  20. Volunteered Geographic Information and Computational Geography: New Perspectives

    OpenAIRE

    Jiang, Bin

    2012-01-01

    Volunteered geographic information (VGI), one of the most important types of user-generated web content, has been emerging as a new phenomenon. VGI is contributed by numerous volunteers and supported by web 2.0 technologies. This chapter discusses how VGI provides new perspectives for computational geography, a transformed geography based on the use of data-intensive computing and simulations to uncover the underlying mechanisms behind geographic forms and processes. We provide several exempl...

  1. Map Specifications and Exchange of Geographical Information

    DEFF Research Database (Denmark)

    Frederiksen, Poul

    1999-01-01

    Specifications for Technical Maps 1993 – 99 are described giving an overview of the specification structure including the object description of the latest version: TK99.The technical map specifications are related to the standards for topographical maps - especially the TOP10DK standard. Common...... object definitions are essential for the standards. Technical as well as topographical map information is exchangeable through the Danish developed “Standard for Exchange of Digital Map Information”, known as the DSFL-format....

  2. Optimization analysis of bus lines based on geographical information system%基于GIS的公交线路优化分析

    Institute of Scientific and Technical Information of China (English)

    焦明连; 贾艳红; 陈海燕

    2013-01-01

    针对公交线路规划设计的特点与目标,以实地采集数据及地图数据为基础,利用GIS空间分析中的缓冲区分析、叠置分析及网络分析功能,以江苏省连云港市新浦区某实验区为例,对研究区域的公交站点辐射范围、区域交通设施完备度、区域交通便捷度和区域交通道路通达性指标进行了分析。并结合空间信息叠置原理,以沟通淮海工学院苍梧校区与通灌校区的公交线路为例,以路线长短和乘客数量为权重进行网络分析,并结合研究区公交站点辐射范围、区域交通设施完备度、区域交通便捷度和区域交通道路通达性分析结果,对现有公交线路优化问题进行了分析。明确了目前公共交通存在的若干问题,为进一步实施公交线网优化方案及提高公交运行效率提供参考。研究表明,GIS技术对于解决城市公共交通线路优化和分析问题具有重要作用。%According to the characteristics and objectives of planning and design of bus lines, some indices are analyzed based on the map and data acquiring on the spot in Xinpu District of Lianyungang City in Jiangsu Province, China.The indices include the radiation scope of bus stops, the facilities complete degree of regional transportation, the convenience degree of regional transportation and the accessible degree of regional road.The technology of the geographical information system ( GIS) is introduced to this study, including spatial buffer analysis and spatial information overlay and network analysis.The optimal choice for the bus line from Cangwu campus to Tongguan campus of the Hua-ihai Institute of Technology is carried out based on the spatial network analysis by the weight of the length of bus lines and the quantity of passengers.The results are imported into this optimal choice simultaneously from the radiation scope of bus stops, the facilities complete degree of regional trans-portation, the

  3. Dynamic analysis of eco-environmental changes based on remote sensing and geographic information system: an example in Longdong region of the Chinese Loess Plateau

    Science.gov (United States)

    Liu, L. C.; Dong, X. F.; Wang, J. H.

    2007-11-01

    The Chinese Loess Plateau is suffering from severe soil erosion. The eco-environmental changes of the plateau are believed to have an important influence on global eco-environmental sustainability; hence, this problem has attracted considerable attention from scientists around the world. This study has two purposes; application of remote sensing (RS) and geographic information system (GIS) techniques in the dynamic analysis of eco-environmental changes in the semiarid zone; and using the Longdong region of the Chinese Loess Plateau as an example, to make dynamic analysis of the eco-environmental changes of the region during the 1986 2004 period and identify controlling factors. Landsat Thematic Mapper (TM) data at a spatial resolution of 30 m were used for analysis. Two training areas were selected in Jingning and Qingcheng counties for analysis using 10-m resolution SPOT and Landsat TM data. The satellite RS images were obtained from the Institute of Remote Sensing Application (IRSA), Chinese Academy of Sciences (CAS). Each images was rectified by Albers Equal Area Conic projection based on 1:50,000 scale topographic maps after spectrum preparation of the images. To make the precision within 1 or 2 pixels, the accurate coordinative control points of the two systems were identified. Then the interpretation key was established based on the land use/cover survey in the study area. The images were classified into six primary environmental types (farmland, forest, grassland, water, construction area, and desert) and 25 sub-types using a visual image interactive interpretation method to obtain vector and attribute data. The resultant accuracy of the land use/cover classification reached 95%. Finally, the transformation areas and ratios of various eco-environmental types in the region were calculated to obtain the transition matrixes of eco-environmental types in the two training areas, Jingning and Qingcheng. This study demonstrates that satellite RS and GIS techniques

  4. µ-shapes: Delineating urban neighborhoods using volunteered geographic information

    Directory of Open Access Journals (Sweden)

    Matt Aadland

    2016-06-01

    Full Text Available Urban neighborhoods are a unique form of geography in that their boundaries rely on a social definition rather than a well-defined physical or administrative boundary. Currently, geographic gazetteers capture little more than then the centroid of a neighborhood, limiting potential applications of the data. In this paper, we present µ-shapes, an algorithm that employs fuzzy-set theory to model neighborhood boundaries suitable for populating gazetteers using volunteered geographic information (VGI. The algorithm is evaluated using a reference dataset and VGI from the Map Kibera Project. A confusion matrix comparison between the reference dataset and µ-shape's output demonstrated high sensitivity and accuracy. Analysis of variance indicated that the algorithm was able to distinguish between boundary and interior blocks. This suggests that, given the existing state of GIS technology, the µ-shapes algorithm can enable neighborhood-related queries that incorporate spatial uncertainty, e.g., find all restaurants within the core of a neighborhood.

  5. Geographic Analysis of the Radiation Oncology Workforce

    International Nuclear Information System (INIS)

    Purpose: To evaluate trends in the geographic distribution of the radiation oncology (RO) workforce. Methods and Materials: We used the 1995 and 2007 versions of the Area Resource File to map the ratio of RO to the population aged 65 years or older (ROR) within different health service areas (HSA) within the United States. We used regression analysis to find associations between population variables and 2007 ROR. We calculated Gini coefficients for ROR to assess the evenness of RO distribution and compared that with primary care physicians and total physicians. Results: There was a 24% increase in the RO workforce from 1995 to 2007. The overall growth in the RO workforce was less than that of primary care or the overall physician workforce. The mean ROR among HSAs increased by more than one radiation oncologist per 100,000 people aged 65 years or older, from 5.08 per 100,000 to 6.16 per 100,000. However, there remained consistent geographic variability concerning RO distribution, specifically affecting the non-metropolitan HSAs. Regression analysis found higher ROR in HSAs that possessed higher education (p = 0.001), higher income (p < 0.001), lower unemployment rates (p < 0.001), and higher minority population (p = 0.022). Gini coefficients showed RO distribution less even than for both primary care physicians and total physicians (0.326 compared with 0.196 and 0.292, respectively). Conclusions: Despite a modest growth in the RO workforce, there exists persistent geographic maldistribution of radiation oncologists allocated along socioeconomic and racial lines. To solve problems surrounding the RO workforce, issues concerning both gross numbers and geographic distribution must be addressed.

  6. Geographic Analysis of the Radiation Oncology Workforce

    Energy Technology Data Exchange (ETDEWEB)

    Aneja, Sanjay [Department of Therapeutic Radiology, Yale University School of Medicine, New Haven, CT (United States); Cancer Outcomes, Policy, and Effectiveness Research Center at Yale, New Haven, CT (United States); Smith, Benjamin D. [University of Texas M. D. Anderson Cancer Center, Houston, TX (United States); Gross, Cary P. [Cancer Outcomes, Policy, and Effectiveness Research Center at Yale, New Haven, CT (United States); Department of General Internal Medicine, Yale University School of Medicine, New Haven, CT (United States); Wilson, Lynn D. [Department of Therapeutic Radiology, Yale University School of Medicine, New Haven, CT (United States); Haffty, Bruce G. [Cancer Institute of New Jersey, New Brunswick, NJ (United States); Roberts, Kenneth [Department of Therapeutic Radiology, Yale University School of Medicine, New Haven, CT (United States); Yu, James B., E-mail: james.b.yu@yale.edu [Department of Therapeutic Radiology, Yale University School of Medicine, New Haven, CT (United States); Cancer Outcomes, Policy, and Effectiveness Research Center at Yale, New Haven, CT (United States)

    2012-04-01

    Purpose: To evaluate trends in the geographic distribution of the radiation oncology (RO) workforce. Methods and Materials: We used the 1995 and 2007 versions of the Area Resource File to map the ratio of RO to the population aged 65 years or older (ROR) within different health service areas (HSA) within the United States. We used regression analysis to find associations between population variables and 2007 ROR. We calculated Gini coefficients for ROR to assess the evenness of RO distribution and compared that with primary care physicians and total physicians. Results: There was a 24% increase in the RO workforce from 1995 to 2007. The overall growth in the RO workforce was less than that of primary care or the overall physician workforce. The mean ROR among HSAs increased by more than one radiation oncologist per 100,000 people aged 65 years or older, from 5.08 per 100,000 to 6.16 per 100,000. However, there remained consistent geographic variability concerning RO distribution, specifically affecting the non-metropolitan HSAs. Regression analysis found higher ROR in HSAs that possessed higher education (p = 0.001), higher income (p < 0.001), lower unemployment rates (p < 0.001), and higher minority population (p = 0.022). Gini coefficients showed RO distribution less even than for both primary care physicians and total physicians (0.326 compared with 0.196 and 0.292, respectively). Conclusions: Despite a modest growth in the RO workforce, there exists persistent geographic maldistribution of radiation oncologists allocated along socioeconomic and racial lines. To solve problems surrounding the RO workforce, issues concerning both gross numbers and geographic distribution must be addressed.

  7. Where's the radon? The geographic information system in Washington State

    International Nuclear Information System (INIS)

    As Washington's lead agency for radon issues, the Department of Health (DOH) is developing the analytical basis for establishing a public health policy regarding radon. The Geographic Information System (GIS) is a fundamental step in this analytical process to develop a map of the potential for indoor radon occurrence. The GIS analysis will take into account geology, geography, topography, soil permeability, indoor test results, population density and distribution, and housing. In addition, DOH is working to aid policy makers and residents by comparing residential exposures to the lowest exposure range at which miners evidenced excess lung cancers. This approach is a departure from the commonly used risk assessments that extrapolate from high to low exposure, and will help determine how many Washington residents are at risk. In conclusion there is an examination of Washington's radon prescriptive construction standards for residences. (author)

  8. Non-professional user`s understanding of Geographic Information

    DEFF Research Database (Denmark)

    Arleth, Mette

    2003-01-01

    of digital media, including online access to a variety of GI-based services; maps, online Geographic information systems, interactive 3D models etc. However, can we expect that a citizen, who has no relevant professional basis for understanding the concept geographic information, be able to use GI......Public participation in the planning process requires well developed communication between the authorities and the public; communication in wich various types of geographic information (GI) plays an important role. With the growth of the Internet this communication has been enriched with the assets......-based online services and comprehend the information contents? Using the Gi-based online services qualitatively in the participatory process obviously requires knowledge of the non-professional user`s understanding and use of GI. This paper discusses the needs for research into this field as well as relevant...

  9. Spatial assessment of Argentinean genetic admixture with geographical information systems.

    Science.gov (United States)

    Diaz-Lacava, Amalia; Walier, Maja; Penacino, Gustavo; Wienker, Thomas F; Baur, Max P

    2011-08-01

    In recent years there has been much attention to Argentinean population stratification. We were interested in assessing population stratification from a geographical perspective and summarizing it in form of maps. We mapped the genetic admixture of the extant male population in central and northern Argentina on the basis of forensic Y-chromosomal haplotypes. We addressed the question which group of genetically similar individuals is predominant in this area. Haplotypes containing seven Y-chromosomal short tandem repeat polymorphisms (Y-STRs), also known as microsatellites - DYS19, DYS389I, DYS389II, DYS390, DYS391, DYS392, DYS393 - were constructed for 145 individuals, recruited in 10 provinces. 97 distinct haplotypes were clustered into four clusters according to molecular distances. A genetic geostatistical analysis was conducted with the open-source geographical information system GRASS GIS. For each haplotype cluster, the according frequency was spatially interpolated over the total study area. Juxtaposing the interpolation surfaces, we screened point-wisely the maximal frequency as well as the label of the respective cluster. The screening results were combined in one summary map. We repeated this procedure for the second maximal frequencies. The resulting maps subdivide the study area into continuous regions comprising one predominant group of similar haplotypes. The first summary map divides the study area into three regions and the second summary map divides the area into four regions. The results of our analysis indicate that two groups of similar European haplotypes alternatively dominate the largest extension of the Argentinean territory. A third group, including South-American haplotypes, dominates the indigenous northwestern Argentinean area. The last group, including worldwide dispersed haplotypes, preponderates in frequency in second place in central Argentina. Our findings confirm a widespread European paternal ancestry, a substantial Amerindian

  10. Relation between the Classical Sciences and Geographic Information Systems (GIS).

    Science.gov (United States)

    Petropoulou, A.

    2012-04-01

    As is already known, in recent years, the use of satellite remote sensing and GIS is a deployable occupation. With their help, we offer the opportunity to acquire knowledge through spatial, temporal, spectral and radiometric resolutions of remote sensing systems and through analysis and incorporation of data Gis. The representation of facts and results of research on the topography and geomorphology sites of archaeological interest, visualization of them with the help of modern software, is growing. The application of innovative technological methods in classical sciences was and is certainly a challenge for scientists, especially when using them to produce results that lead to understanding the history of a place. So far the formulation of conclusions from the archaeologists was with traditional practices, through sources from the extant ancient texts and by archaeological excavations. In some cases lack of data, to find the exact position of the archaeological monument needs to take place science and technology of Geoinformatics methods and techniques that enable the management of various information from anthropogenic and natural geographic area below of a single digital environment. Since that archeology examines the evolution of historical events through the geography, geomorphology, time and culture, the results of archaeological research is rich in spatial information. The Gis is an experienced program to process these large volumes of data, particularly those referred to the geomorphology. Consequently the aim of the paper is to show us that through the help of software can visualize the archaeological monuments of the region through the geomorphologic background mainly. Having as a study area the prefecture of Arcadia owned in the Peloponnese/ Greece shows the direct relation of geomorphology with archeology through the Geographic Information Systems. Keywords: Gis, Classic science, history, geomorphology and archeology

  11. E-Government and Geographical Information Based Collaboration Patterns

    DEFF Research Database (Denmark)

    Schrøder, Lise; Hvingel, Line Træholt; Hansen, Henning Sten

    2010-01-01

    in regard of e-Government readiness. In Denmark the development of e-Government is characterised by a very informal, bottom-up approach, with a focus on standardisation, the use of geographic information systems (GIS) and IT-architecture. The organisational aspects have not been an issue of much attention...

  12. Geographical cost-supply analysis forest biomass for distributed generation in Denmark

    DEFF Research Database (Denmark)

    Möller, Bernd

    2004-01-01

    The article presents a study which uses geographical information system (GIS) to perform cost-supply analysis of wood chips resources for energy production.......The article presents a study which uses geographical information system (GIS) to perform cost-supply analysis of wood chips resources for energy production....

  13. Land use suitability analysis of the Upper Basin of the Kara Menderes River using analytical hierarchy process and geographical information systems

    Directory of Open Access Journals (Sweden)

    Cengiz Akbulak

    2010-08-01

    Full Text Available Sustainable development links to a rationalistic and effective use of resources. Presently, growth in human needs for a variety of reasons causes a great pressure on the existing resources, which has induced in misuse-based deterioration of lands as well as increase in poverty and several kinds of social problems. In this context, due to rapid growth of population in Turkey, the most appropriate use of lands according to their potentials is essential, because sustainability of environments can only be achieved on condition that natural and cultural potentials are appointed and the land use is enforced in compliance with ecological properties. In previous attempts of land suitability analyses, the subject “the most proper use of land” has been the focus of several authors.In this study, land suitability analysis of the upper basin of the Kara Menderes River was carried out, which drains the Biga Peninsula, west of the Marmara Region in Turkey, on the basis of geographical information systems and analytical hierarchy process, a technique used for multi-criteria decision making studies. After the determination of suitability in terms of the main three land use types, i.e. agriculture, meadow-pasture and forest, an optimal land use map was produced and results were compared to the present-day land use situation. Based on optimal land use results, an area of 15.2% is suggested for agricultural activities. The area proposed for meadow-pasture lands corresponds to only about 8.5%. Forest areas constitute, however, the foremost class with the suggested value of  75,1%. When data from optimal land use is compared with that in the present-day conditions, it is noticed that the proportion of agricultural areas excesses the suggested value of optimal land use, as opposed to the proportions of forest and meadow-pasture areas having smaller distributions. This implies that some agricultural areas, which are recommended to be evaluated as forest and

  14. Land use suitability analysis of the Upper Basin of the Kara Menderes River using analytical hierarchy process and geographical information systems

    Directory of Open Access Journals (Sweden)

    Cengiz Akbulak

    2010-08-01

    Full Text Available Sustainable development links to a rationalistic and effective use of resources. Presently, growth in human needs for a variety of reasons causes a great pressure on the existing resources, which has induced in misuse-based deterioration of lands as well as increase in poverty and several kinds of social problems. In this context, due to rapid growth of population in Turkey, the most appropriate use of lands according to their potentials is essential, because sustainability of environments can only be achieved on condition that natural and cultural potentials are appointed and the land use is enforced in compliance with ecological properties. In previous attempts of land suitability analyses, the subject “the most proper use of land” has been the focus of several authors.In this study, land suitability analysis of the upper basin of the Kara Menderes River was carried out, which drains the Biga Peninsula, west of the Marmara Region in Turkey, on the basis of geographical information systems and analytical hierarchy process, a technique used for multi-criteria decision making studies. After the determination of suitability in terms of the main three land use types, i.e. agriculture, meadow-pasture and forest, an optimal land use map was produced and results were compared to the present-day land use situation. Based on optimal land use results, an area of 15.2% is suggested for agricultural activities. The area proposed for meadow-pasture lands corresponds to only about 8.5%. Forest areas constitute, however, the foremost class with the suggested value of 75,1%. When data from optimal land use is compared with that in the present-day conditions, it is noticed that the proportion of agricultural areas excesses the suggested value of optimal land use, as opposed to the proportions of forest and meadow-pasture areas having smaller distributions. This implies that some agricultural areas, which are recommended to be evaluated as forest and meadow

  15. Volunteered Geographic Information and Computational Geography: New Perspectives

    CERN Document Server

    Jiang, Bin

    2012-01-01

    Volunteered geographic information (VGI), one of the most important types of user-generated web content, has been emerging as a new phenomenon. VGI is contributed by numerous volunteers and supported by web 2.0 technologies. This chapter discusses how VGI provides new perspectives for computational geography, a transformed geography based on the use of data-intensive computing and simulations to uncover the underlying mechanisms behind geographic forms and processes. We provide several exemplars of computational geography using OpenStreetMap data and GPS traces to investigate the scaling of geographic space and its implications for human mobility patterns. We illustrate that the field of geography is experiencing a dramatic change and that geoinformatics and computational geography deserve to be clearly distinguished, with the former being a study of engineering and the latter being a science. Keywords geoinformatics, openstreetmap, scaling of geographic space, spatial heterogeneity

  16. The Geographic Information Grid System Based on Mobile Agent

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    We analyze the deficiencies of current application systems, and discuss the key requirements of distributed Geographic Information service (GIS). We construct the distributed GIS on grid platform. Considering the flexibility and efficiency, we integrate the mobile agent technology into the system. We propose a new prototype system, the Geographic Information Grid System (GIGS) based on mobile agent. This system has flexible services and high performance, and improves the sharing of distributed resources. The service strategy of the system and the examples are also presented.

  17. Geographical Scale Effects on the Analysis of Leptospirosis Determinants

    Directory of Open Access Journals (Sweden)

    Renata Gracie

    2014-10-01

    Full Text Available Leptospirosis displays a great diversity of routes of exposure, reservoirs, etiologic agents, and clinical symptoms. It occurs almost worldwide but its pattern of transmission varies depending where it happens. Climate change may increase the number of cases, especially in developing countries, like Brazil. Spatial analysis studies of leptospirosis have highlighted the importance of socioeconomic and environmental context. Hence, the choice of the geographical scale and unit of analysis used in the studies is pivotal, because it restricts the indicators available for the analysis and may bias the results. In this study, we evaluated which environmental and socioeconomic factors, typically used to characterize the risks of leptospirosis transmission, are more relevant at different geographical scales (i.e., regional, municipal, and local. Geographic Information Systems were used for data analysis. Correlations between leptospirosis incidence and several socioeconomic and environmental indicators were calculated at different geographical scales. At the regional scale, the strongest correlations were observed between leptospirosis incidence and the amount of people living in slums, or the percent of the area densely urbanized. At the municipal scale, there were no significant correlations. At the local level, the percent of the area prone to flooding best correlated with leptospirosis incidence.

  18. Geographical Scale Effects on the Analysis of Leptospirosis Determinants

    Science.gov (United States)

    Gracie, Renata; Barcellos, Christovam; Magalhães, Mônica; Souza-Santos, Reinaldo; Barrocas, Paulo Rubens Guimarães

    2014-01-01

    Leptospirosis displays a great diversity of routes of exposure, reservoirs, etiologic agents, and clinical symptoms. It occurs almost worldwide but its pattern of transmission varies depending where it happens. Climate change may increase the number of cases, especially in developing countries, like Brazil. Spatial analysis studies of leptospirosis have highlighted the importance of socioeconomic and environmental context. Hence, the choice of the geographical scale and unit of analysis used in the studies is pivotal, because it restricts the indicators available for the analysis and may bias the results. In this study, we evaluated which environmental and socioeconomic factors, typically used to characterize the risks of leptospirosis transmission, are more relevant at different geographical scales (i.e., regional, municipal, and local). Geographic Information Systems were used for data analysis. Correlations between leptospirosis incidence and several socioeconomic and environmental indicators were calculated at different geographical scales. At the regional scale, the strongest correlations were observed between leptospirosis incidence and the amount of people living in slums, or the percent of the area densely urbanized. At the municipal scale, there were no significant correlations. At the local level, the percent of the area prone to flooding best correlated with leptospirosis incidence. PMID:25310536

  19. Volunteered Geographic Information System Design: Project and Participation Guidelines

    Directory of Open Access Journals (Sweden)

    José-Pablo Gómez-Barrón

    2016-07-01

    Full Text Available This article sets forth the early phases of a methodological proposal for designing and developing Volunteered Geographic Information (VGI initiatives based on a system perspective analysis in which the components depend and interact dynamically among each other. First, it focuses on those characteristics of VGI projects that present different goals and modes of organization, while using a crowdsourcing strategy to manage participants and contributions. Next, a tool is developed in order to design the central crowdsourced processing unit that is best suited for a specific project definition, associating it with a trend towards crowd-based or community-driven approaches. The design is structured around the characterization of different ways of participating, and the task cognitive demand of working on geo-information management, spatial problem solving and ideation, or knowledge acquisition. Then, the crowdsourcing process design helps to identify what kind of participants are needed and outline subsequent engagement strategies. This is based on an analysis of differences among volunteers’ participatory behaviors and the associated set of factors motivating them to contribute, whether on a crowd or community-sourced basis. From a VGI system perspective, this paper presents a set of guidelines and methodological steps in order to align project goals, processes and volunteers and thus successfully attract participation. This methodology helps establish the initial requirements for a VGI system, and, in its current state, it mainly focuses on two components of the system: project and participants.

  20. Geographic Information System - Modern Teaching Method in Business Administration

    OpenAIRE

    Irina Albăstroiu; Mihai Felea; Cristinel Vasiliu

    2014-01-01

    The evolution of information and communication technologies has made possible the use of new ways of teaching and learning. Geographic Information System (GIS), one of these new technologies, allows a visual learning environment, facilitates active learning and spatial thinking, and also improves students` skills on using information technologies. The aim of this paper is to examine how GIS applications contribute to the education field but also to present the limitations of their use in the ...

  1. Application of a geographical information system approach for risk analysis of fascioliasis in southern Espírito Santo state, Brazil.

    Science.gov (United States)

    Martins, Isabella Vilhena Freire; de Avelar, Barbara Rauta; Pereira, Maria Julia Salim; da Fonseca, Adevair Henrique

    2012-09-01

    A model based on geographical information systems for mapping the risk of fascioliasis was developed for the southern part of Espírito Santo state, Brazil. The determinants investigated were precipitation, temperature, elevation, slope, soil type and land use. Weightings and grades were assigned to determinants and their categories according to their relevance with respect to fascioliasis. Theme maps depicting the spatial distribution of risk areas indicate that over 50% of southern Espírito Santo is either at high or at very high risk for fascioliasis. These areas were found to be characterized by comparatively high temperature but relatively low slope, low precipitation and low elevation corresponding to periodically flooded grasslands or soils that promote water retention.

  2. Role of geographic information system in malaria control.

    Science.gov (United States)

    Sharma, V P; Srivastava, A

    1997-08-01

    In this paper we provide an account of our experience in the application of remote sensing (RS) and geographic information system (GIS) in understanding malaria transmission dynamics at the local level. Two studies have been briefly reviewed. One is the application of RS on the mosquito production in the Sanjay lake and surrounding areas in Delhi. Studies are demonstrated that remote sensing data were useful in assessing relative mosquito abundance from large water bodies. The second study was carried out in Nadiad taluka, Kheda district, Gujarat on the application of RS and GIS in a village-wise analysis of receptivity and vulnerability to malaria. For this study, remote sensed data and topo sheets of 1:50,000 and 1:125,000 were used in preparing thematic maps. Digitised overlaid maps were subjected to computer analysis using ARC/INFO 3.1 software. Malaria annual parasite incidence (API) showed relationship with water table followed by soil type, irrigation and water quality, other parameters also contributed to malaria receptivity but less significantly. Based on GIS analysis location specific malaria control strategy was suggested to achieve cost effective control of malaria on a sustainable basis. PMID:9291687

  3. A reactive data structure for geographic information systems

    NARCIS (Netherlands)

    Oosterom, P.J.M. van

    1989-01-01

    We introduce a Reactive Data Structure, that is a spatial data structure with detail levels. The two properties, spatial organization and detail levels, are the basis for a Geographic Information System with a multi-scale database. A reactive data structure is a novel type of data structure catering

  4. Geographical information system for radon gas from soil measurement

    International Nuclear Information System (INIS)

    The working program foresees the realization of an geographical information system for the check in field of the geological parameters and determination of uranium and radium contents in various type of rocks. It is here also pointed out a measuring method for radon concentration in soil

  5. Towards Geographic Information Systems (GIS) Implementation: A Case Study

    Science.gov (United States)

    Meaney, Miriam

    2006-01-01

    "Despite its central role in real-world geography, the Geographic Information System (GIS) has had little uptake to date in School Geography." (Wiegand, 2001) This statement can be accurately applied to the author's current school setting and was the focus of her and her colleagues' case study, commenced in 2004 and continued into 2005. The study…

  6. Geographic information systems at the Goddard Space Flight Center

    Science.gov (United States)

    Goldberg, M.

    1982-01-01

    The basic functions of a Geographic Information System (GIS) and the different ways that a GIS may be implemented are described. It surveys that GIS software packages that are currently in operation at the Goddard Space Flight Center and discusses the types of applications for which they are best suited. Future plans for in-house GIS research and development are outlined.

  7. Teaching "with" Rather than "about" Geographic Information Systems

    Science.gov (United States)

    Hammond, Thomas C.; Bodzin, Alec M.

    2009-01-01

    Both "teaching" and "teaching" with Geographic Information Systems (GIS) are "wicked problems," in the sense that they involve multiple variables that interact with one another. Effective teaching calls for both learning with understanding and transfer. The authors' own experience implementing a geography and geospatial inquiry project with middle…

  8. Fuzzy surfaces in GIS and geographical analysis theory, analytical methods, algorithms and applications

    CERN Document Server

    Lodwick, Weldon

    2007-01-01

    Surfaces are a central to geographical analysis. Their generation and manipulation are a key component of geographical information systems (GISs). However, geographical surface data is often not precise. When surfaces are used to model geographical entities, the data inherently contains uncertainty in terms of both position and attribute. Fuzzy Surface in GIS and Geographical Analysis sets out a process to identify the uncertainty in geographic entities. It describes how to successfully obtain, model, analyze, and display data, as well as interpret results within the context of GIS. Focusing on uncertainty that arises from transitional boundaries, the book limits its study to three types of uncertainties: intervals, fuzzy sets, and possibility distributions. The book explains that uncertainty in geographical data typically stems from these three and it is only natural to incorporate them into the analysis and display of surface data. The book defines the mathematics associated with each method for analysis,...

  9. Implementation of a geographical information system in nuclear emergencies

    International Nuclear Information System (INIS)

    From 2003, the Nuclear Regulatory Authority (RNA) has worked in the implementation of a Geographical Information System (SIG) for the planning and the intervention in emergencies, with special emphasis in the nuclear emergencies. The main objective of the SIG developed in the ARN is to give the necessary support for the planning, training and application of the actions of radiological protection necessary in front of a nuclear emergency, offering the geo referenced cartographic base, the readiness of logistical resources in the whole country, incorporating results of models of forecast of consequences and environmental measurements during the emergency, facilitating the analysis of this information in real time and facilitating the presentation of results for the decision making. The cartographic base is constituted of demographic, social, economic data identification of main actors interveners in the emergency, vial infrastructure and natural characteristics of the area in question. In this work the main characteristics of the implemented SIG are presented including the conceptual standards of design that contemplate the international requirements for the planning and answer in the event of nuclear emergencies, the current state of the system and the foreseen evolution. A description of the opposing problems during its implementation that can be common to many countries of the region is also presented, as well as the obtained experience of its use in preparation tasks for emergencies and in mocks. (Author)

  10. Advancing Theory? Landscape Archaeology and Geographical Information Systems

    Directory of Open Access Journals (Sweden)

    Di Hu

    2012-05-01

    Full Text Available This paper will focus on how Geographical Information Systems (GIS have been applied in Landscape Archaeology from the late 1980s to the present. GIS, a tool for organising and analysing spatial information, has exploded in popularity, but we still lack a systematic overview of how it has contributed to archaeological theory, specifically Landscape Archaeology. This paper will examine whether and how GIS has advanced archaeological theory through a historical review of its application in archaeology.

  11. Evaluation of a public participation geographic information system

    OpenAIRE

    Tišma Aleksandra D.

    2006-01-01

    Evaluating public participation geographic information systems (PP GIS) is essential to make improvements and generate standard practices for future projects, but it is probably the most neglected activity of the PP GIS development cycle. This research makes a contribution to the scarce information available about the usefulness of these systems in planning practice. The research examined the use of the PP GIS which was developed during last five years under the sponsorship of the Dutch Minis...

  12. The NASA John C. Stennis Environmental Geographic Information System

    Science.gov (United States)

    Cohan, Tyrus

    2002-01-01

    Contents include the following: 1. Introduction: Background information. Initial applications of the SSC EGIS. Ongoing projects. 2.Scope of SSC EGIS. 3. Data layers. 4. Onsite operations. 5. Landcover classifications. 6. Current activities. 7. GIS/Key. 8. Infrastructure base map - development. 9. Infrastructure base map - application. 10. Incorrected layer. 11. Corrected layer. 12. Emergency environmental response tool. 13. Future directions. 14. Bridging the gaps. 15. Environmental geographical information system.

  13. Development of the OCRWM transportation geographic information system

    International Nuclear Information System (INIS)

    The U.S. Department of Energy's (DOE) Office of Civilian Radioactive Waste Management (OCRWM) is responsible for disposing of the nation's high-level radioactive waste. Current plans call for OCRWM to ship commercial spent nuclear fuel (SNF) from 77 individual reactor sites to a central facility for disposal. The Transportation Geographic Information System (TGIS) is a valuable tool in planning for the SNF shipments and communicating with the public regarding the shipments. The TGIS consists of a geographic information system (GIS) combined with a set of databases that provide data on specific geographic areas, transportation networks, and point locations. Planning activities may include analyzing possible routing options or criteria, highlighting route-specific attributes such as the location of culturally sensitive areas, providing route-specific data such as accident statistics, determining the affected population density along a route to support risk assessment activities, or providing emergency response information such as responder locations and hospitals along the proposed routes. The TGIS is a useful communication tool in helping to address the public's concern over how the shipments will be managed, particularly in the area of route selection by providing graphic portrayals of potential routes in their true geographic contexts

  14. Creation of geographic information database of subsatellite calibration test site

    Science.gov (United States)

    Zyelyk, Ya. I.; Semeniv, O. V.

    2014-12-01

    The prototype of geographic information database (DB) of the sub-satellite calibration test site has been created, to which user can be accessed from the free open-source geographic information system Quantum GIS (QGIS) environment. QGIS is used as an integrator of all data and applications and visualizer of the satellite imagery and vector layers of test sites in the cartographic interface. Conversion of the database from the local representation in the MS Access to the server representation in the PostgreSQL environment has been performed. Dynamic application to QGIS for user interaction from QGIS environment with the object-relational database and to display information from the database has been created. Functional-algorithmic part of these application and the interface for user interaction with the database has been developed.

  15. Technology and Its Application:MIS with Geographical Information

    Institute of Scientific and Technical Information of China (English)

    2003-01-01

    Despite the constant expansion of the application of GIS, in recent years, the data processing ability of the application system developed with GIS_Tool is quite limited. Management information system with the geographical information can not only be used to deal with data commonly, but also deal with digitized maps as GIS_Tool does. Thus it can help the user develop an application system high-qualified both in maps and traditional data. This paper, by taking the method of integrated MapInfo in the application of Visual Basic as an example, mainly illustrates two technological problems-integrated map technology and the multiuserization of Maplnfo geographical information. And also the concrete solutions to the problems are provided.

  16. Principles of logic and the use of digital geographic information systems

    Science.gov (United States)

    Robinove, Charles Joseph

    1986-01-01

    Digital geographic information systems allow many different types of data to be spatially and statistically analyzed. Logical operations can be performed on individual or multiple data planes by algorithms that can be implemented in computer systems. Users and creators of the systems should fully understand these operations. This paper describes the relationships of layers and features in geographic data bases and the principles of logic that can be applied by geographic information systems and suggests that a thorough knowledge of the data that are entered into a geographic data base and of the logical operations will produce results that are most satisfactory to the user. Methods of spatial analysis are reduced to their primitive logical operations and explained to further such understanding.

  17. Geographic Information Systems in Evaluation and Visualization of Construction Schedule

    CERN Document Server

    Bansal, V K

    2008-01-01

    Commercially available scheduling tools such as Primavera and Microsoft Project fail to provide information pertaining to the spatial aspects of construction project. A methodology using geographical information systems (GIS) is developed to represent spatial aspects of the construction progress graphically by synchronizing it with construction schedule. The spatial aspects are depicted by 3D model developed in AutoCAD and construction schedule is generated using Microsoft Excel. Spatial and scheduling information are linked together into the GIS environment (ArcGIS). The GIS-based system developed in this study may help in better understanding the schedule along with its spatial aspects.

  18. A Framework for Geographic Object-Based Image Analysis (GEOBIA) based on geographic ontology

    Science.gov (United States)

    Gu, H. Y.; Li, H. T.; Yan, L.; Lu, X. J.

    2015-06-01

    GEOBIA (Geographic Object-Based Image Analysis) is not only a hot topic of current remote sensing and geographical research. It is believed to be a paradigm in remote sensing and GIScience. The lack of a systematic approach designed to conceptualize and formalize the class definitions makes GEOBIA a highly subjective and difficult method to reproduce. This paper aims to put forward a framework for GEOBIA based on geographic ontology theory, which could implement "Geographic entities - Image objects - Geographic objects" true reappearance. It consists of three steps, first, geographical entities are described by geographic ontology, second, semantic network model is built based on OWL(ontology web language), at last, geographical objects are classified with decision rule or other classifiers. A case study of farmland ontology was conducted for describing the framework. The strength of this framework is that it provides interpretation strategies and global framework for GEOBIA with the property of objective, overall, universal, universality, etc., which avoids inconsistencies caused by different experts' experience and provides an objective model for mage analysis.

  19. FCoE Application on Network Service of Geographic Information

    Institute of Scientific and Technical Information of China (English)

    ZHAO Di

    2008-01-01

    The network service of geographic information has developed rapidly based data sharing on the web. It has an basic capability to satisfy the requirements from various users, but the network transporting efficiency of sharing data is affected greatly by the distinct environment of network resources. The emergence of fibre channel over Ethernet(FCoE) technology solves the problem preferably. FCoE allows IP protocol and fibre channel network traffic to be carried over existing FCoE-aware drivers, NICs, and switches. It also allows an evolutionary approach towards input/output(I/O) consolidation by preserving all fibre channel constructs. FCoE simplifies customer environments by using Ethernet and allowing the industry to avoid creating another, separate protocol for I/O consolidation. The advantages of FCoE increase network transport efficiency of geographic information.

  20. Abstracts Collection -- Constraint Databases, Geometric Elimination ang Geographic Information Systems

    OpenAIRE

    Bank, Bernd; EGENHOFER, Max; Kuijpers, Bart

    2007-01-01

    From 20.05. to 25.05., the Dagstuhl Seminar 07212 ``Constraint Databases, Geometric Elimination and Geographic Information Systems'' was held in the International Conference and Research Center (IBFI), Schloss Dagstuhl. During the seminar, several participants presented their current research, and ongoing work and open problems were discussed. Abstracts of the presentations given during the seminar as well as abstracts of seminar results and ideas are put together in this pa...

  1. Space-contained conflict revision, for geographic information

    OpenAIRE

    Doukari, Omar; Jeansoulin, Robert

    2007-01-01

    14 pages International audience Using qualitative reasoning with geographic information, contrarily, for instance, with robotics, looks not only fastidious (i.e.: encoding knowledge Propositional Logics PL), but appears to be computational complex, and not tractable at all, most of the time. However, knowledge fusion or revision, is a common operation performed when users merge several different data sets in a unique decision making process, without much support. Introducing logics woul...

  2. Modelling the Cross-Country Trafficability with Geographical Information Systems

    OpenAIRE

    Gumos, Aleksander Karol

    2005-01-01

    The main objectives of this work were to investigate Geographical Information Systems techniques for modelling a cross-country trafficability. To accomplished stated tasks, reciprocal relationships between the soil deposits, local hydrology, geology and geomorphology were studied in relation to the study area in South-Eastern Sweden. Growing awareness of nowadays users of GIS in general is being concentrated on understanding an importance of soil conditions changed after cross-country traffic...

  3. The role of Volunteered Geographic Information in participatory planning

    DEFF Research Database (Denmark)

    Knudsen, Anne-Marie Sanvig; Kahila, Maarit

    2012-01-01

    Due to developments in pervasive computing and the diffusion of digital media technologies, the amount of Volunteered Geographic Information (VGI) is rising rapidly. This paper investi- gates the potential of applying VGI to a participatory planning context. What kind of VGI was considered useful...... context, employing volunteered GPS tracking to capture everyday uses of the urban environment. The second case study was carried out in Finland, employing SoftGIS as a tool to identify and quantify place values....

  4. Mapping Submarine Groundwater Discharge Using Radon and Geographic Information Systems

    Science.gov (United States)

    Grant, C. M.; Rapaglia, J. P.

    2013-05-01

    Fresh submarine groundwater discharge (SGD), which is likely the fraction of SGD most important for nutrient flux into the coastal zone, is driven by terrestrial hydraulic gradients. It is, therefore, logical to utilize this information in the search for SGD. The increased precision of digital elevation models (DEM) combined with the utility of geographic information systems (GIS) enables the researcher to pinpoint flow accumulation. ArcGIS 10 was used to find and quantify flow accumulation in Port Jefferson Harbor, NY and the Niantic River, CT. Both Port Jefferson and the Niantic are of similar geology being formed by glacial moraines marked by high hydraulic conductivity. In Port Jefferson, high flow was found in the southwestern and southeastern corners of the harbor. Here folds in land elevation focused water into the corners of the harbor. In the Niantic River flow accumulation was determined near anomalously high pockets of Nitrate-Nitrogen found previous to this study. Meanwhile, although radon has been used extensively as a tracer for SGD, few studies have used radon to map it. Radon was used to investigate groundwater seepage in both locations. An in-air radon monitor, RAD7, modified with a RAD Aqua, was used in a closed loop system to detect continuous Rn levels while steaming along the coastline. It was found that in areas with high flow accumulation as determined by the GIS analysis, Rn levels were similarly elevated (636 Bq/m3). This work complements research undertaken in the Baltic Sea, Germany, although the relatively smaller spatial scale of this study was, perhaps, more useful in matching radon activities and flow accumulation. While it may not be financially or logistically sensible to do extensive radon studies, this method of mapping fresh SGD may help researchers find the preverbal needle in a haystack.

  5. Geographical information system and environmental epidemiology: a cross-sectional spatial analysis of the effects of traffic-related air pollution on population respiratory health

    Directory of Open Access Journals (Sweden)

    Carrozzi Laura

    2011-03-01

    Full Text Available Abstract Background Traffic-related air pollution is a potential risk factor for human respiratory health. A Geographical Information System (GIS approach was used to examine whether distance from a main road (the Tosco-Romagnola road affected respiratory health status. Methods We used data collected during an epidemiological survey performed in the Pisa-Cascina area (central Italy in the period 1991-93. A total of 2841 subjects participated in the survey and filled out a standardized questionnaire on health status, socio-demographic information, and personal habits. A variable proportion of subjects performed lung function and allergy tests. Highly exposed subjects were defined as those living within 100 m of the main road, moderately exposed as those living between 100 and 250 m from the road, and unexposed as those living between 250 and 800 m from the road. Statistical analyses were conducted to compare the risks for respiratory symptoms and diseases between exposed and unexposed. All analyses were stratified by gender. Results The study comprised 2062 subjects: mean age was 45.9 years for men and 48.9 years for women. Compared to subjects living between 250 m and 800 m from the main road, subjects living within 100 m of the main road had increased adjusted risks for persistent wheeze (OR = 1.76, 95% CI = 1.08-2.87, COPD diagnosis (OR = 1.80, 95% CI = 1.03-3.08, and reduced FEV1/FVC ratio (OR = 2.07, 95% CI = 1.11-3.87 among males, and for dyspnea (OR = 1.61, 95% CI = 1.13-2.27, positivity to skin prick test (OR = 1.83, 95% CI = 1.11-3.00, asthma diagnosis (OR = 1.68, 95% CI = 0.97-2.88 and attacks of shortness of breath with wheeze (OR = 1.67, 95% CI = 0.98-2.84 among females. Conclusion This study points out the potential effects of traffic-related air pollution on respiratory health status, including lung function impairment. It also highlights the added value of GIS in environmental health research.

  6. Geographical information system and environmental epidemiology: a cross-sectional spatial analysis of the effects of traffic-related air pollution on population respiratory health

    Science.gov (United States)

    2011-01-01

    Background Traffic-related air pollution is a potential risk factor for human respiratory health. A Geographical Information System (GIS) approach was used to examine whether distance from a main road (the Tosco-Romagnola road) affected respiratory health status. Methods We used data collected during an epidemiological survey performed in the Pisa-Cascina area (central Italy) in the period 1991-93. A total of 2841 subjects participated in the survey and filled out a standardized questionnaire on health status, socio-demographic information, and personal habits. A variable proportion of subjects performed lung function and allergy tests. Highly exposed subjects were defined as those living within 100 m of the main road, moderately exposed as those living between 100 and 250 m from the road, and unexposed as those living between 250 and 800 m from the road. Statistical analyses were conducted to compare the risks for respiratory symptoms and diseases between exposed and unexposed. All analyses were stratified by gender. Results The study comprised 2062 subjects: mean age was 45.9 years for men and 48.9 years for women. Compared to subjects living between 250 m and 800 m from the main road, subjects living within 100 m of the main road had increased adjusted risks for persistent wheeze (OR = 1.76, 95% CI = 1.08-2.87), COPD diagnosis (OR = 1.80, 95% CI = 1.03-3.08), and reduced FEV1/FVC ratio (OR = 2.07, 95% CI = 1.11-3.87) among males, and for dyspnea (OR = 1.61, 95% CI = 1.13-2.27), positivity to skin prick test (OR = 1.83, 95% CI = 1.11-3.00), asthma diagnosis (OR = 1.68, 95% CI = 0.97-2.88) and attacks of shortness of breath with wheeze (OR = 1.67, 95% CI = 0.98-2.84) among females. Conclusion This study points out the potential effects of traffic-related air pollution on respiratory health status, including lung function impairment. It also highlights the added value of GIS in environmental health research. PMID:21362158

  7. Evaluation of a public participation geographic information system

    Directory of Open Access Journals (Sweden)

    Tišma Aleksandra D.

    2006-01-01

    Full Text Available Evaluating public participation geographic information systems (PP GIS is essential to make improvements and generate standard practices for future projects, but it is probably the most neglected activity of the PP GIS development cycle. This research makes a contribution to the scarce information available about the usefulness of these systems in planning practice. The research examined the use of the PP GIS which was developed during last five years under the sponsorship of the Dutch Ministry of Spatial Planning, Social Housing and Environment, called "The New Map of the Netherlands".

  8. A preliminary geodetic data model for geographic information systems

    Science.gov (United States)

    Kelly, K. M.

    2009-12-01

    Our ability to gather and assimilate integrated data collections from multiple disciplines is important for earth system studies. Moreover, geosciences data collection has increased dramatically, with pervasive networks of observational stations on the ground, in the oceans, in the atmosphere and in space. Contemporary geodetic observations from several space and terrestrial technologies contribute to our knowledge of earth system processes and thus are a valuable source of high accuracy information for many global change studies. Assimilation of these geodetic observations and numerical models into models of weather, climate, oceans, hydrology, ice, and solid Earth processes is an important contribution geodesists can make to the earth science community. Clearly, the geodetic observations and models are fundamental to these contributions. ESRI wishes to provide leadership in the geodetic community to collaboratively build an open, freely available content specification that can be used by anyone to structure and manage geodetic data. This Geodetic Data Model will provide important context for all geographic information. The production of a task-specific geodetic data model involves several steps. The goal of the data model is to provide useful data structures and best practices for each step, making it easier for geodesists to organize their data and metadata in a way that will be useful in their data analyses and to their customers. Built on concepts from the successful Arc Marine data model, we introduce common geodetic data types and summarize the main thematic layers of the Geodetic Data Model. These provide a general framework for envisioning the core feature classes required to represent geodetic data in a geographic information system. Like Arc Marine, the framework is generic to allow users to build workflow or product specific geodetic data models tailored to the specific task(s) at hand. This approach allows integration of the data with other existing

  9. Geographic Information Systems in function of environmental protection

    International Nuclear Information System (INIS)

    Geographical information systems as a methodology is a relatively new technology in scientific research and finding practical solutions for geographical problems. One of those problems is the complex over categorical set [1] known as environment. It is a very actual and complex problematic, hard for organizing and optimization when it has to set about the needs of humanity.Therefore, this article deals with the application of geographic information systems as one of the latest scientific techniques and technologies through which one can analyze and define the most optimal solutions in terms of environmental protection and sustainable development. The aim is to highlight the quantitative and qualitative aspects of GIS technology in function of the environment on the one hand, and through concrete examples to point out to the power of these technologies in the process of finding optimal solutions. It is briefly pointed out to some general criteria that are inevitable in the process of creating databases in GIS necessary for adequate and suitable GIS analyses.(Author)

  10. Forest and wildlife habitat analysis using remote sensing and geographic information systems. M.S. Thesis, 26 May 1992 Abstract Only

    Science.gov (United States)

    Fiorella, Maria

    1995-01-01

    Forest and wildlife habitat analyses were conducted at the H.J. Andrews Experimental Forest in the Central Cascade Mountains of Oregon using remotely sensed data and a geographic information system (GIS). Landsat Thematic Mapper (TM) data were used to determine forest successional stages, and to analyze the structure of both old and young conifer forests. Two successional stage maps were developed. One was developed from six TM spectral bands alone, and the second was developed from six TM spectral bands and a relative sun incidence band. Including the sun incidence band in the classification improved the mapping accuracy in the two youngest successional stages, but did not improve overall accuracy or accuracy of the two oldest successional stages. Mean spectral values for old-growth and mature stands were compared in seven TM bands and seven band transformations. Differences between mature and old-growth successional stages were greatest for the band ratio of TM 4/5 (P = 0.00005) and the multiband transformation of wetness (P = 0.00003). The age of young conifer stands had the highest correlation to TM 4/5 values (r = 0.9559) of any of the TM band or band transformations used. TM 4/5 ratio values of poorly regenerated conifer stands were significantly different from well regenerated conifer stands after age 15 (P = 0.0000). TM 4/5 was named a 'Successional Stage Index' (SSI) because of its ability to distinguish forest successional stages. The forest successional stage map was used as input into a vertebrate richness model using GIS. The three variables of (1) successional stage, (2) elevation, and (3) site moisture were used in the GIS to predict the spatial occurrence of small mammal, amphibian, and reptile species based on primary and secondary habitat requirements. These occurrence or habitat maps were overlayed to tally the predicted number of vertebrate at any given point in the study area. Overall, sixty-three and sixty-seven percent of the model

  11. Development of Geographic Information Systems and their use in National Libraries of Russia

    Directory of Open Access Journals (Sweden)

    Natalya Kotelnikova

    2005-04-01

    Full Text Available By the end of the 20th century cartography has amassed a vast array of information on major aspects of existence, interaction and the functioning of nature and society owing to vigorous automation and computerisation. These are applied for the purpose of creating geographic information systems (GIS. The main function of geographic information systems is the storage and use of computer (electronic maps and atlases. Geographic information systems differ from each other in their territorial levels (global, national, regional, municipal and others and by their subjects (land, cadastre, ecological, sea and other maps. The geographic information system, ‘Black Sea’ is cited as an example. This is an information-based project compiled with a view to taking decisions on the protection of the resources of the basin of the Black Sea. The Black Sea GIS was developed for use by governments, scientists, the general public, NGOs and the media for the following purposes: · planning for marine environment activities and impacts on a regional scale; · public awareness through training, education, workshops, lectures and media; · scientific analysis, modelling, ecological impact assessment, science planning. The main GIS components are designed to perform the following functions: · data input; · data storage and database management; · data analysis and processing; · interaction with the user (graphical/map editing; and · data output and presentation (plotting.

  12. Integrating Numerical Groundwater Modeling Results With Geographic Information Systems

    Science.gov (United States)

    Witkowski, M. S.; Robinson, B. A.; Linger, S. P.

    2001-12-01

    Many different types of data are used to create numerical models of flow and transport of groundwater in the vadose zone. Results from water balance studies, infiltration models, hydrologic properties, and digital elevation models (DEMs) are examples of such data. Because input data comes in a variety of formats, for consistency the data need to be assembled in a coherent fashion on a single platform. Through the use of a geographic information system (GIS), all data sources can effectively be integrated on one platform to store, retrieve, query, and display data. In our vadoze zone modeling studies in support of Los Alamos National Laboratory's Environmental Restoration Project, we employ a GIS comprised of a Raid storage device, an Oracle database, ESRI's spatial database engine (SDE), ArcView GIS, and custom GIS tools for three-dimensional (3D) analysis. We store traditional GIS data, such as, contours, historical building footprints, and study area locations, as points, lines, and polygons with attributes. Numerical flow and transport model results from the Finite Element Heat and Mass Transfer Code (FEHM) are stored as points with attributes, such as fluid saturation, or pressure, or contaminant concentration at a given location. We overlay traditional types of GIS data with numerical model results, thereby allowing us to better build conceptual models and perform spatial analyses. We have also developed specialized analysis tools to assist in the data and model analysis process. This approach provides an integrated framework for performing tasks such as comparing the model to data and understanding the relationship of model predictions to existing contaminant source locations and water supply wells. Our process of integrating GIS and numerical modeling results allows us to answer a wide variety of questions about our conceptual model design: - Which set of locations should be identified as contaminant sources based on known historical building operations

  13. Key solutions to geographical information synchronizing in GRID-GIS

    Science.gov (United States)

    Tan, Jian; Fan, XiangTao; Du, XiaoPing

    2008-10-01

    Geographical GRID system is of great importance at fields as public security, military action, emergency response etc. The homogenizing distributed geographic environment system requires same geographical information for operations in each node. The bottle neck is how to reliably and accurately synchronize the great volume geographical data. This paper solves the problem in three ways. First, Message server queue is constructed for stable message delivery. In this way, the message server always has its alternative in preparation for breakdowns, and the whole GRID always has single working message server. Then the message server queue can be constructed and effectively woks. This mode has the advantages of the other two modes that the message delivery is more reliable and less time-costing. Second, both push and pull modes are adopted to send messages in time. Push mode means the node which has altered its data is responsible for the delivery of the changed part, like "push" the data to the message server. While pull mode means the demand node or the message server is responsible to check the data status in other nodes and "pull" the new data from the source. In push mode, if the network between the sponsor node and the message server breakdown, the message could be missing or the sponsor could be halted, when the network resumed, the update action could not be invoked again. And in pull mode, the message server needs to check the data and collect update parts in the whole grid, it is a time-costing operation that could not be executed frequently. So the combination mode is adopted. In combination mode, not only each node has its own update trigger to invoke the delivery of the new data, but also the message server also can recurrently check the data status after an assigned interval according to the network situation and the computation ability, then the duly update can be guaranteed. Three, extended GML is developed to wrap the geographical data. GML defines a lot

  14. Partnerships and opportunities: The archival management of geographic information systems

    Science.gov (United States)

    Zimmerman, Ann

    1995-01-01

    This article provides an overview of geographic information systems (GISs) technology and applications. It discusses its implications for archives, including a review of the existing literature. Finally, the article recommends a strategy for managing such systems based on the study of an environmental GIS application in a federal research center and on the vision recently expressed by David Bearman and Margaret Hedstrom. A multi-staged approach to the archival management of GISs is recommended and new partnerships are suggested to aid archivists in the future management of these systems.

  15. Water quality modeling using geographic information system (GIS) data

    Science.gov (United States)

    Engel, Bernard A

    1992-01-01

    Protection of the environment and natural resources at the Kennedy Space Center (KSC) is of great concern. The potential for surface and ground water quality problems resulting from non-point sources of pollution was examined using models. Since spatial variation of parameters required was important, geographic information systems (GIS) and their data were used. The potential for groundwater contamination was examined using the SEEPAGE (System for Early Evaluation of the Pollution Potential of Agricultural Groundwater Environments) model. A watershed near the VAB was selected to examine potential for surface water pollution and erosion using the AGNPS (Agricultural Non-Point Source Pollution) model.

  16. Geographical Information Systems (GIS); Sistemas de Informacion Geografica

    Energy Technology Data Exchange (ETDEWEB)

    Garcia Santiago, P.A. [Inisel Espacio, Madrid (Spain)

    1994-12-31

    Geographical Information Systems (GIS) have converted in a computer`s tool that due of its great versatility, exceeds of its usage as Basic Cartography Manager. The best GIS to use (vector or raster) will depend on the type of data we work with, we should keep in mind that the use of a specific GIS does not mean total incompatibility with others GIS. Future tendencies in this field aim to Data Storage Optimization and to Shared Operating System between Workstations and Personal computers. (Author)

  17. Geodata Modeling and Query in Geographic Information Systems

    Science.gov (United States)

    Adam, Nabil

    1996-01-01

    Geographic information systems (GIS) deal with collecting, modeling, man- aging, analyzing, and integrating spatial (locational) and non-spatial (attribute) data required for geographic applications. Examples of spatial data are digital maps, administrative boundaries, road networks, and those of non-spatial data are census counts, land elevations and soil characteristics. GIS shares common areas with a number of other disciplines such as computer- aided design, computer cartography, database management, and remote sensing. None of these disciplines however, can by themselves fully meet the requirements of a GIS application. Examples of such requirements include: the ability to use locational data to produce high quality plots, perform complex operations such as network analysis, enable spatial searching and overlay operations, support spatial analysis and modeling, and provide data management functions such as efficient storage, retrieval, and modification of large datasets; independence, integrity, and security of data; and concurrent access to multiple users. It is on the data management issues that we devote our discussions in this monograph. Traditionally, database management technology have been developed for business applications. Such applications require, among other things, capturing the data requirements of high-level business functions and developing machine- level implementations; supporting multiple views of data and yet providing integration that would minimize redundancy and maintain data integrity and security; providing a high-level language for data definition and manipulation; allowing concurrent access to multiple users; and processing user transactions in an efficient manner. The demands on database management systems have been for speed, reliability, efficiency, cost effectiveness, and user-friendliness. Significant progress have been made in all of these areas over the last two decades to the point that many generalized database platforms

  18. On the validation of solids represented with the international standards for geographic information

    NARCIS (Netherlands)

    Ledoux, H.

    2013-01-01

    The international standards for geographic information provide unambiguous definitions of geometric primitives, with the aim of fostering exchange and interoperability in the geographical information system (GIS) community. In two dimensions, the standards are wellaccepted and there are algorithms (

  19. Varenius—NCGIA's Project to Advance Geographic Information Science: 1997 Annual Report

    OpenAIRE

    Michael F. Goodchild; Kemp, Karen K.

    1997-01-01

    This report describes research results in the first year of Varenius—a project to advance geographic information science within the context of an information society. The key strategic areas of research include (1) cognitive models of geographic space, (2) computational implementations of geographic concepts, and (3) geographies of the information society.

  20. Geographic information systems (GIS) and remote sensing in aquatic botany: methodological aspects

    OpenAIRE

    R. Caloz; Collet, Claude

    2012-01-01

    A geographical information system (GIS) is much more than a computerized mapping system, it is a system designed to acquire, to manage and to process spatial information. In the current trend of a multidisciplinary approach of earth environmental management, GIS offer a basis for integrating both data and analysis tools from a broad spectrum of scientific disciplines. This paper aims to present an understanding of concepts and methodologies involved in the field of GIS. It describes major ste...

  1. Urban drainage control applying rational method and geographic information technologies

    Science.gov (United States)

    Aldalur, Beatriz; Campo, Alicia; Fernández, Sandra

    2013-09-01

    The objective of this study is to develop a method of controlling urban drainages in the town of Ingeniero White motivated by the problems arising as a result of floods, water logging and the combination of southeasterly and high tides. A Rational Method was applied to control urban watersheds and used tools of Geographic Information Technology (GIT). A Geographic Information System was developed on the basis of 28 panchromatic aerial photographs of 2005. They were georeferenced with control points measured with Global Positioning Systems (basin: 6 km2). Flow rates of basins and sub-basins were calculated and it was verified that the existing open channels have a low slope with the presence of permanent water and generate stagnation of water favored by the presence of trash. It is proposed for the output of storm drains, the use of an existing channel to evacuate the flow. The solution proposed in this work is complemented by the placement of three pumping stations: one on a channel to drain rain water which will allow the drain of the excess water from the lower area where is located the Ingeniero White city and the two others that will drain the excess liquid from the port area.

  2. KBGIS-2: A knowledge-based geographic information system

    Science.gov (United States)

    Smith, T.; Peuquet, D.; Menon, S.; Agarwal, P.

    1986-01-01

    The architecture and working of a recently implemented knowledge-based geographic information system (KBGIS-2) that was designed to satisfy several general criteria for the geographic information system are described. The system has four major functions that include query-answering, learning, and editing. The main query finds constrained locations for spatial objects that are describable in a predicate-calculus based spatial objects language. The main search procedures include a family of constraint-satisfaction procedures that use a spatial object knowledge base to search efficiently for complex spatial objects in large, multilayered spatial data bases. These data bases are represented in quadtree form. The search strategy is designed to reduce the computational cost of search in the average case. The learning capabilities of the system include the addition of new locations of complex spatial objects to the knowledge base as queries are answered, and the ability to learn inductively definitions of new spatial objects from examples. The new definitions are added to the knowledge base by the system. The system is currently performing all its designated tasks successfully, although currently implemented on inadequate hardware. Future reports will detail the performance characteristics of the system, and various new extensions are planned in order to enhance the power of KBGIS-2.

  3. Geographic information system(GIS) applications to optimize route selection, environmental analysis and power transmission line designs; Aplicaciones en sistemas de informacion geograficos (SIG) para optimizar seleccion de ruta, analisis ambiental y diseno de lineas de transmision

    Energy Technology Data Exchange (ETDEWEB)

    Cadena Suarez, Luis Fernando; Posada Delgado, Fabio Humberto; Alvarez Davila, Esteban; Gomez Colorado, Oscar Alberto [Interconexion Electrica S.A. (ISA), Medellin (Colombia)]. E-mail: fecadena@isa.com.co

    2001-07-01

    Interconexion Eletrica s.a. (ISA) is a company of the Colombian government for electric energy transportation through the national energy transportation network, it makes part of the companies group with growing environmental conscience. The better route identifications for high voltage transmission lines do not involve just the engineering analyses, but mainly the environmental one.These integrated analysis have been largely powered through the technology applications like Geographic Information Systems (GIS) and Remote Sensing (RS). These technologies were applied for a total of 300 kilometers between 1992 and 2000 in the largest power transmission lines whose configurations cross different geographic conditions. This current technical contribution describes the application of GIS and RS technologies for the best routes, environmental sensibility analysis and environmental impact evaluations. The applications have resulted in the integration between engineering and environmental processes, optimization of environmental evaluation, formulations of procedures handling and environmental control, as well as transmission line profile characteristics. After the project construction, GIS can be used as a useful tool for environmental monitoring in connection with power transmission lines, maintenance of servitude areas, availability conditions and quality of the high voltage transmission service.

  4. Improving MANET Routing Protocols Through the Use of Geographical Information

    Directory of Open Access Journals (Sweden)

    Vasil Hnatyshin

    2013-05-01

    Full Text Available This paper provides a summary of our research studyof the location-aided routing protocols for mobilead hoc networks (MANET. This study focuses on theissue of using geographical location information toreduce the control traffic overhead associated withthe route discovery process of the ad-hoc on demanddistance vector (AODV routing protocol. AODV performs route discovery by flooding the wholenetwork with the route request packets. This results in unnecessarily large number of control packetstraveling through the network. In this paper, we introduced a new Geographical AODV (GeoAODVprotocol that relies on location information to reduce the flooding area to a portion of the network that islikely contains a path to destination. Furthermore,we also compared GeoAODV performance with thatof the Location Aided Routing (LAR protocol and examined four mechanisms for reducing the size of theflooding area: LAR zone, LAR distance, GeoAODV static, and GeoAODV rotate. We employed OPNETModeler version 16.0 software to implement these mechanisms and to compare their performancethrough simulation. Collected results suggest thatlocation-aided routing can significantly reduce thecontrol traffic overhead during the route discoveryprocess. The comparison study revealed that the LARzone protocol consistently generates fewer controlpackets than other location-aided mechanisms.However, LAR zone relies on the assumption that location information and traveling velocities of all thenodes are readily available throughout the network,which in many network environments is unrealistic.At the same time, the GeoAODV protocols make no such assumption and dynamically distribute locationinformation during route discovery. Furthermore, the collected results showed that the performance ofthe GeoAODV rotate protocol was only slightly worsethan that of LAR zone. We believe that eventhough GeoAODV rotate does not reduce the control traffic overhead by as much as LAR zone, it canbecome a

  5. GSM Base Stations Location Monitoring using Geographic Information System

    Directory of Open Access Journals (Sweden)

    Kuboye B. M.

    2013-06-01

    Full Text Available Global System for Mobile Communication (GSM is a digital system developed to meet the desires of the entire public. As the population of a particular area, city or country increases, the number of mobile subscribers increases too. GSM network operators have to reduce congestion on their networks in order to satisfy their subscribers, therefore, a means of monitoring the base stations' locations and the geographical area of where they are located are important factor to achieve this purpose. This work provides a simple step-by-step approach on how to monitor the location of the base stations. A review of GSM and Global Positioning System (GPS technology and their applications to the Geographic Information System (GIS are presented. The means of taken the coordinates of base stations using a GPS device is also presented. ESRI's ArcView application software was used to design the map that shows the location of the base station and thereafter was integrated into the web. It concluded with the recommendation to GSM operators in Nigeria. If the recommendations are given necessary attention, the planning and optimization of cell sites will be enhanced and thereby reduce congestion on network. As a result, the performance of Network will improve, and it will give rise to subscribers' satisfaction and increasing profit returns to the operators.

  6. Using Geographical Information Systems (GIS) to Identify the Geographic Regions Where People That Use Ground Water are Most Vulnerable to Impacts from Underground Storage

    Science.gov (United States)

    Using Geographic Information Systems (GIS), the vulnerability of ground water supplies to contamination from underground storage tanks (USTs) was assessed. The analysis was conducted for the 48 contiguous states, and then again for groups of states corresponding to the EPA Regio...

  7. Measuring access to primary medical care: some examples of the use of geographical information systems.

    Science.gov (United States)

    Parker, E B; Campbell, J L

    1998-06-01

    This paper explores the potential for geographical information system technology in defining some variables influencing the use of primary care medical services. Eighteen general practices in Scotland contributed to a study examining the accessibility of their services and their patients' use of the local Accident and Emergency Department. Geo-referencing of information was carried out through analysis of postcode data relating to practices and patients. This information was analyzed using ARC/INFO GIS software in conjunction with the ORACLE relational database and 1991 census information. The results demonstrate that GIS technology has an important role in defining and analyzing the use of health services by the population. PMID:10671022

  8. Savannah River Site Geographic Information System management plan

    Energy Technology Data Exchange (ETDEWEB)

    Gordon, D.E.

    1992-02-01

    A plan for managing the development of Geographic Information System (GIS) applications at the Savannah River Site (SRS) in a coordinated, integrated fashion has been developed. Included in the plan are discussions on the guidance for GIS activities at the site, the overall strategy for managing GIS applications development, the specific administrative and programmatic tasks with projected completion schedules, and the organizational structure in place to direct this GIS effort. The Department of Energy-Savannah River Field Office (DOE-SR) has encouraged all primary subcontracting organizations at SRS involved with the mapping of spatial data to coordinate their efforts and be more cost effective. This plan provides a description of organized activities in 1992 for establishing a coordinated approach for developing and implementing GIS technology.

  9. Geographical Information Systems, Urban Forestry and Climate Change: A Review

    Directory of Open Access Journals (Sweden)

    O.S. Eludoyin

    2012-06-01

    Full Text Available The paper unfolds the use of urban forestry in controlling climate change and presents the use Geographical Information System (GIS as an adequate and efficient modern tool for analyzing and mapping the forest inventories for use in ameliorating the scourge of climate change in the society. The paper concludes that a holistic approach which involves the integrating urban forestry, GIS and elements of climate will go a long way to assist in saving the livelihood of mankind from being seriously affected by climate change. More so, adequate awareness should be given on the roles of urban forestry and GIS in reducing climate change. In addition, continual assessment of landuse and land cover should be done in order to detect the percentage change of urban forest resources over time with the use of GIS and remote sensing.

  10. Basic theory and key technologies for marine geographic information system

    Institute of Scientific and Technical Information of China (English)

    SU Fenzhen; YANG Xiaomei; XU Jun; ZHANG Tianyu; LUO Jiancheng

    2006-01-01

    Marine geographic information system (MGIS) has great ability to deal with the spatio-temporal problems and has potential superiority when it is applied to oceanography. Using the feature extraction of oceanic phenomena as a case study, the functions of the MGIS are analyzed, and thus the position of MGIS in the oceanography is defined. Comparing the requirement of MGIS with that of the traditional GIS which has been developed in the terrestrial applications in the past four decades, the frame for the functions of MGIS is constructed. According to the established MGIS, some key technologies are discussed in detail with emphasis on the specialities which can distinguish the MGIS from the traditional GIS.

  11. SilvaCarbon: Volunteered Geographical Information and Effective Monitoring

    Science.gov (United States)

    Sun, M.

    2011-12-01

    Significant amounts of efforts have been taken into monitoring forest and terrestrial carbon by many countries in recent years. As the rapid increase of methodologies and resources, international collaboration is critical now for enhancing capacity of managing and sharing the ongoing research efficiently worldwide. Moreover, much broader citizen participants with or without expert training have been involved in. Fortunately, the emergence of Web2.0, social networking, and geopositioning technology make such wide-range collaboration and participation on geospatial science research possible. The concept of Volunteer Geographical Information (VGI) coined by Michael F. Goodchild enables the ability to contribute georeferenced and disseminated scientific resource and to exchange information over the web. With this in mind, SilvaCarbon, applying the above technologies, is a project conducted by U.S. federal agencies as a U.S. contribution to the Forest Carbon Tracking task of the intergovernmental Group on Earth Observation. Clearly, all research activities must rely on geographic data. And because of the observational objectives of Forest Carbon Tracking task, data sharing is a main objective of the project needed to be addressed. Data can be captured directly, contributed by secondary sources, or obtained from historical archive for the past period. Each VGI participant becomes a sensor with the ability to collect and share data. A given phenomenon can be always described more sufficient by data from multiple sources than captured individually. And data sharing can also satisfy the desire to avoid data duplication. Another purpose of Silvacarbon is to describe the activity states of involved countries, communities and individual participants and to help communicating. With the assistant of the other social networking like Facebook and Twitter, VGI participants are given an access to broadcast states of their research or activities. They also can plan travels and trades

  12. Use of GIS (Geographic Information Systems) and analysis of demand: an analysis for predictions in the energy segment; O emprego do SIG (Sistema de Informacoes Geograficas) e a analise de demanda: um ensaio para previsoes no segmento de energia

    Energy Technology Data Exchange (ETDEWEB)

    Castro, Jorge Henrique de [Petroleo Brasileiro SA. (PETROBRAS), Rio de Janeiro, RJ (Brazil). Unidade de Gas e Energia

    2008-07-01

    The energy assumed a preponderant paper to the current societies because it became the number spine of both economic and social activities developed. Technological advances and the economic and social development of the nations, was based on the transformation and use of natural resources in products and services. Such transformation if gave more of accented form from the Industrial Revolution where the substitution of activities until then carried through by the man, for the job of machines, transformed the way of life and the behavior of the society. Particularly the projection of demand of energy send to the following duality: the problem should be evaluated in a wide way, in other words, considering the whole range of component variables of the decision process for generation and allocation of the energy supply; however, in a local way regarding with the search of models that optimize of the energy potentials and the consequent search of value added market. Historically the forecast of the energy demand uses the GDP mainly. It is presupposed that the association of such variables to the areas that these act, or polygons that delimit them, it happens in a homogeneous way and that the limits of such areas constitute an identified change of behavior. However, this premise is false, because such polygons are defined for operational and / or politician criteria not having warranty that such distributions are really homogeneous. As solution, the development and use of decision support systems based on GIS (Geographic Information System) technology has been along the last years a powerful modeling and simulation tool. The objective of this paper is to introduce the application of techniques of spatial analysis in the activity of projection, activity that is inherent to the forecast energy demand, to mitigate the future developments of scientific models and applications associates. (author)

  13. Developing a Workflow to Identify Inconsistencies in Volunteered Geographic Information: A Phenological Case Study.

    Directory of Open Access Journals (Sweden)

    Hamed Mehdipoor

    Full Text Available Recent improvements in online information communication and mobile location-aware technologies have led to the production of large volumes of volunteered geographic information. Widespread, large-scale efforts by volunteers to collect data can inform and drive scientific advances in diverse fields, including ecology and climatology. Traditional workflows to check the quality of such volunteered information can be costly and time consuming as they heavily rely on human interventions. However, identifying factors that can influence data quality, such as inconsistency, is crucial when these data are used in modeling and decision-making frameworks. Recently developed workflows use simple statistical approaches that assume that the majority of the information is consistent. However, this assumption is not generalizable, and ignores underlying geographic and environmental contextual variability that may explain apparent inconsistencies. Here we describe an automated workflow to check inconsistency based on the availability of contextual environmental information for sampling locations. The workflow consists of three steps: (1 dimensionality reduction to facilitate further analysis and interpretation of results, (2 model-based clustering to group observations according to their contextual conditions, and (3 identification of inconsistent observations within each cluster. The workflow was applied to volunteered observations of flowering in common and cloned lilac plants (Syringa vulgaris and Syringa x chinensis in the United States for the period 1980 to 2013. About 97% of the observations for both common and cloned lilacs were flagged as consistent, indicating that volunteers provided reliable information for this case study. Relative to the original dataset, the exclusion of inconsistent observations changed the apparent rate of change in lilac bloom dates by two days per decade, indicating the importance of inconsistency checking as a key step in

  14. An Analysis of Urban Land Development Using Multi-Criteria Decision Model and Geographical Information System (A Case Study of Babolsar City

    Directory of Open Access Journals (Sweden)

    Sedigheh Lotfi

    2009-01-01

    Full Text Available Problem Statement: The unplanned physical expansion of cities has been one of the most important problems of urban management in developing countries. Iran, like other developing world has experienced a high level of urbanization growth which transformed the physical fabric of urban areas. North of Iran is one of most rapid growing region of the country where the moderate climate and a tourism based economy encouraged many developers to investigate in housing sector. So, the primary outcome of such process was the out-growth of the city boundaries in the region. Approach: This research attempted to present an appropriate model for urban physical development. The study used different parameters such as environmental and socio-economic factors to provide a good understanding of the city behavior in its geographical setting. Through applying the Multi-Criteria Decision Model (MCDA and GIS, the most appropriate area introduced for near future development. Results: The results revealed that the integrated GIS and MCDA model has many potentials which allow the planner or user investigate the final decision for site selection for future urban physical development. Conclusion: Since the city is located in a fertile agricultural area where the general policy of the local government is to save the lands for strategic crops like rice, to select the right site for city development is quiet significant.

  15. Geographic exposure modeling: a valuable extension of geographic information systems for use in environmental epidemiology.

    OpenAIRE

    Beyea, J

    1999-01-01

    Geographic modeling of individual exposures using air pollution modeling techniques can help in both the design of environmental epidemiologic studies and in the assignment of measures that delineate regions that receive the highest exposure in space and time. Geographic modeling can help in the interpretation of environmental sampling data associated with airborne concentration or deposition, and can act as a sophisticated interpolator for such data, allowing values to be assigned to locatio...

  16. Integration technology research on marine geographical information system

    Institute of Scientific and Technical Information of China (English)

    XUE Cunjin; SU Fenzhen; DU Yunyan; YANG Xiaomei

    2008-01-01

    It is urgent and necessary to integrate a marine geographical information system (MGIS) with marine remote sensing detection modules.On the basis of the current technology and features of applications,an open three-layer integration framework is de-signed.At the data layer,a two-level three-base integration mechanism based on the plug-in technology is applied;At the func-tion layer,an integration mode based on API,DLL,EXE and COM is discussed;and at the application layer,a sharing mecha-nism based on the clients/service is adopted.As an example,the remote sensing integrated application information system of Chinas coastal zone and offshore (MaXplorer1.0) with multiecology remote sensing fusion and assimilation module,surge detec-tion module as well as eight other thematic application modules is integrated,and the key technology of integration is discussed at different layers and in different modules.The result shows that it is possible to realize the conformity of technology and resources and to provide the incorporate technology platform for marine information operational functioning after applying the integration framework.

  17. Geographic Information Systems for the Regional Integration of Renewable Energies

    International Nuclear Information System (INIS)

    This report is based on the project: The GIS in the regional integration of Renewable Energies for decentralised electricity production; developed by CIEMAT (Spanish Energy Research Centre) and UPM (Polytechnic University of Madrid, Spain) since 1997. The objective of this project is to analyse, evaluate and improve the GIS methodologies for application in RE and how GIS can aid in the evaluation and simulation of influence of technical, socio economical and geographical parameters. This project begin with the review of SOLARGIS methodology. SOLARGIS was developed by an european research team (included CIEMAT) in the frame of JOULE II Programme. In the first place this report described the state of the art in the application of GIS to Renewable Energies. In second place, the SOLARGIS review tasks and the application of this new product to Lorca (Murcia Region in Spain). Finally, the report describes the methodology for the spatial sensibility analysis. (Author) 24 refs

  18. Inferring Geographic Coordinates of Origin for Europeans Using Small Panels of Ancestry Informative Markers

    OpenAIRE

    Petros Drineas; Jamey Lewis; Peristera Paschou

    2010-01-01

    Recent large-scale studies of European populations have demonstrated the existence of population genetic structure within Europe and the potential to accurately infer individual ancestry when information from hundreds of thousands of genetic markers is used. In fact, when genomewide genetic variation of European populations is projected down to a two-dimensional Principal Components Analysis plot, a surprising correlation with actual geographic coordinates of self-reported ancestry has been r...

  19. Using Blood Informative Transcripts in Geographical Genomics: Impact of Lifestyle on Gene Expression in Fijians

    OpenAIRE

    Nath, Artika Praveeta; Arafat, Dalia; Gibson, Greg

    2012-01-01

    In previous geographical genomics studies of the impact of lifestyle on gene expression inferred from microarray analysis of peripheral blood samples, we described the complex influences of culture, ethnicity, and gender in Morocco, and of pregnancy in Brisbane. Here we describe the use of nanofluidic Fluidigm quantitative RT-PCR arrays targeted at a set of 96 transcripts that are broadly informative of the major axes of immune gene expression, to explore the population structure of transcrip...

  20. Application of geographical information system in disposal site selection for hazardous wastes

    OpenAIRE

    Rezaeimahmoudi, Mehdi; Esmaeli, Abdolreza; Gharegozlu, Alireza; Shabanian, Hassan; ROKNI, Ladan

    2014-01-01

    Background The aim of this study was to provide a scientific method based on Geographical Information System (GIS) regarding all sustainable development measures to locate a proper landfill for disposal of hazardous wastes, especially industrial (radioactive) wastes. Methods Seven effective factors for determining hazardous waste landfill were applied in Qom Province, central Iran. These criteria included water, slope, population centers, roads, fault, protected areas and geology. The Analysi...

  1. Using Geographic Information System to Maintenance and Upgrading Public Utility Networks Using Technology AM / FM

    OpenAIRE

    AUSAMA ALTADMORY

    2013-01-01

    Many applications using Geographic Information Systems technology exist today. From facility mapping to inventory management, from land use analysis to trash collection routing, GIS technology is enhancing the ability of government agencies to provide services to its citizenry. Public utility networks comprise the most important and infrastructure in any city, state, or country. They provide essential support for running a society on uninterrupted daily basis, in most countries. The service a...

  2. Effective 3-D surface modeling for geographic information systems

    Directory of Open Access Journals (Sweden)

    K. Yüksek

    2013-11-01

    Full Text Available In this work, we propose a dynamic, flexible and interactive urban digital terrain platform (DTP with spatial data and query processing capabilities of Geographic Information Systems (GIS, multimedia database functionality and graphical modeling infrastructure. A new data element, called Geo-Node, which stores image, spatial data and 3-D CAD objects is developed using an efficient data structure. The system effectively handles data transfer of Geo-Nodes between main memory and secondary storage with an optimized Directional Replacement Policy (DRP based buffer management scheme. Polyhedron structures are used in Digital Surface Modeling (DSM and smoothing process is performed by interpolation. The experimental results show that our framework achieves high performance and works effectively with urban scenes independent from the amount of spatial data and image size. The proposed platform may contribute to the development of various applications such as Web GIS systems based on 3-D graphics standards (e.g. X3-D and VRML and services which integrate multi-dimensional spatial information and satellite/aerial imagery.

  3. Effective 3-D surface modeling for geographic information systems

    Science.gov (United States)

    Yüksek, K.; Alparslan, M.; Mendi, E.

    2016-01-01

    In this work, we propose a dynamic, flexible and interactive urban digital terrain platform with spatial data and query processing capabilities of geographic information systems, multimedia database functionality and graphical modeling infrastructure. A new data element, called Geo-Node, which stores image, spatial data and 3-D CAD objects is developed using an efficient data structure. The system effectively handles data transfer of Geo-Nodes between main memory and secondary storage with an optimized directional replacement policy (DRP) based buffer management scheme. Polyhedron structures are used in digital surface modeling and smoothing process is performed by interpolation. The experimental results show that our framework achieves high performance and works effectively with urban scenes independent from the amount of spatial data and image size. The proposed platform may contribute to the development of various applications such as Web GIS systems based on 3-D graphics standards (e.g., X3-D and VRML) and services which integrate multi-dimensional spatial information and satellite/aerial imagery.

  4. Architecture and key technologies of grid geographic information system

    Institute of Scientific and Technical Information of China (English)

    2008-01-01

    The highly efficient and stable collaborative computation platform for geospatial information can be constructed on the basis of Grid computing technology,com-bined with Peer-to-Peer (P2P) computing technology and geospatial database technology. This paper proposed the architecture and key technologies of the Grid GIS (Geographic Information System) incorporated with P2P structure,and corre-spondingly a Grid GIS prototype named Nebula was designed and then imple-mented. Nebula is a suite of middleware for geospatial Grid computing,which could be deployed onto various service nodes in network. Based on Grid protocols and infrastructure,Nebula provides invocation interfaces to users in form of Grid services. By using P2P message based communication mechanism,complex geospatial computation tasks could be accomplished by Nebula in a collaborative way. This paper introduced Nebula’s architecture and key modules,and according to experimental data,we discussed the Grid GIS’s advantages,application scenar-ios and future directions.

  5. Combined use of bacterial community analysis techniques and geographic information systems (GIS) for the evaluation of anthropogenic impact in coastal waters

    International Nuclear Information System (INIS)

    Marinas and recreational boats have an impact in coastal environments because they constitute point sources for low intensity but recurrent pollution by oil hydrocarbons. Since marinas tend to be located in areas of great natural beauty, and/or of high value economic activities, the pollution they contribute is assumed to be important and increasing, through currently-available information is very incomplete. (Author)

  6. Combined use of bacterial community analysis techniques and geographic information systems (GIS) for the evaluation of anthropogenic impact in coastal waters

    Energy Technology Data Exchange (ETDEWEB)

    Bosch, R.; Aguilo, M. M.; Martin-Cardona, C.; Nogales, B.

    2009-07-01

    Marinas and recreational boats have an impact in coastal environments because they constitute point sources for low intensity but recurrent pollution by oil hydrocarbons. Since marinas tend to be located in areas of great natural beauty, and/or of high value economic activities, the pollution they contribute is assumed to be important and increasing, through currently-available information is very incomplete. (Author)

  7. Relationships between esophageal cancer and spatial environment factors by using Geographic Information System.

    Science.gov (United States)

    Wu, Ku-Sheng; Huo, Xia; Zhu, Guang-Hui

    2008-04-15

    To explore the relationships between esophageal cancer (EC) and climatic, geographic factors in China by using Geographic Information System, database of EC mortality of 237 sampling areas surveyed in 1990-1992 was established in Excel and linked with the digital polygon maps of study areas. Geographic and climate data of sampling areas were extracted from the raster dataset and finished in Arc/Info 9.0 and ENVI4.2 software by using spatial analysis. Spearman correlation analysis and multiple regression analysis after principal component analysis (PCA) were performed to analyze the relationship between EC and these factors. The counties that have the highest EC morality show significant aggregation. Spearman correlation analysis shows weak negative correlation between precipitation, water-heat index (WHI), highest/lowest temperature and EC mortality, and weak positive correlation between drought index (DI), wind speed, population density and EC mortality. Multiple linear regression analysis indicated that the variables associated with EC mortality were precipitation, temperature, wind speed, elevation, DI, WHI and normalized difference vegetation index (NDVI) of July. Our study suggested that the high-risk areas of EC in China are mostly drought and low altitude areas relatively. There were relatively lower NDVI in summer and higher wind speed in these areas. GIS can be applied to cancer epidemiology study and will exert active effect, which should be further explored. PMID:18243281

  8. A geographic analysis of wind turbine placement in Northern California

    International Nuclear Information System (INIS)

    The development of new wind energy projects requires a significant consideration of land use issues. An analytic framework using a Geographic Information System (GIS) was developed to evaluate site suitability for wind turbines and to predict the locations and extent of land available for feasible wind power development. The framework uses rule-based spatial analysis to evaluate different scenarios. The suitability criteria include physical requirements as well as environmental and human impact factors. By including socio-political concerns, this technique can assist in forecasting the acceptance level of wind farms by the public. The analysis was used to evaluate the nine-county region of the Greater San Francisco Bay Area. The model accurately depicts areas where large-scale wind farms have been developed or proposed. It also shows that there are many locations available in the Bay Area for the placement of smaller-scale wind turbines. The framework has application to other regions where future wind farm development is proposed. This information can be used by energy planners to predict the extent that wind energy can be developed based on land availability and public perception

  9. Spatial Collective Intelligence? credibility, accuracy, and Volunteered Geographic Information.

    Science.gov (United States)

    Spielman, Seth E

    2014-01-01

    Collective intelligence is the idea that under the right circumstances collections of individuals are smarter than even the smartest individuals in the group (Suroweiki 2004), that is a group has an "intelligence" that is independent of the intelligence of its members. The ideology of collective intelligence undergirds much of the enthusiasm about the use of "volunteered" or crowdsourced geographic information. Literature from a variety of fields makes clear that not all groups possess collective intelligence, this paper identifies four pre-conditions for the emergence of collective intelligence and then examine the extent to which collectively generated mapping systems satisfy these conditions. However, the "intelligence" collectively generated maps is hard to assess because there are two difficult to reconcile perspectives on map quality- the credibility perspective and the accuracy perspective. Much of the current literature on user generated maps focuses on assessing the quality of individual contributions. However, because user generated maps are complex social systems and because the quality of a contribution is difficult to assess this strategy may not yield an "intelligent" end product. The existing literature on collective intelligence suggests that the structure of groups more important that the intelligence of group members. Applying this idea to user generated suggests that systems should be designed to foster conditions known to produce collective intelligence rather than privileging particular contributions/contributors. The paper concludes with some design recommendations and by considering the implications of collectively generated maps for both expert knowledge and traditional state sponsored mapping programs. PMID:25419184

  10. Instructional geographic information science Map overlay and spatial abilities

    Science.gov (United States)

    Tricot, Thomas Alexander, II

    The fundamental goal of this study is to determine if the complex spatial concept of map overlay can be effectively learned by young adolescents through the utilization of an instructional technique based within the foundations of Instructional Geographic Information Science (InGIScience). Percent correct and reaction times were the measures used to analyze the ability of young adolescents to learn the intersect, erase, and union functions of map overlay. The ability to solve for missing inputs, output, or function was also analyzed. Young adolescents of the test group scored higher percent correct and recorded faster reaction times than those of the control group or adults of the expert group by the end of the experiment. The intersect function of map overlay was more difficult in terms of percent correct and reaction time than the erase or union functions. Solving for the first or second input consistently resulted in lower percent correct and higher reaction times throughout the experiment. No overall performance differences were shown to exist between males and females. Results of a subjective "real-world" test also indicated learning by young adolescents. This study has shown that the practice of repetitive instruction and testing has proven effective for enhancing spatial abilities with regard to the map overlay concept. This study found that with practice, young adolescents can learn the map overlay concept and perform at levels equal to or greater than adults. This study has helped to answer the question of whether this development of spatial abilities is possible.

  11. KBGIS-II: A knowledge-based geographic information system

    Science.gov (United States)

    Smith, Terence; Peuquet, Donna; Menon, Sudhakar; Agarwal, Pankaj

    1986-01-01

    The architecture and working of a recently implemented Knowledge-Based Geographic Information System (KBGIS-II), designed to satisfy several general criteria for the GIS, is described. The system has four major functions including query-answering, learning and editing. The main query finds constrained locations for spatial objects that are describable in a predicate-calculus based spatial object language. The main search procedures include a family of constraint-satisfaction procedures that use a spatial object knowledge base to search efficiently for complex spatial objects in large, multilayered spatial data bases. These data bases are represented in quadtree form. The search strategy is designed to reduce the computational cost of search in the average case. The learning capabilities of the system include the addition of new locations of complex spatial objects to the knowledge base as queries are answered, and the ability to learn inductively definitions of new spatial objects from examples. The new definitions are added to the knowledge base by the system. The system is performing all its designated tasks successfully. Future reports will relate performance characteristics of the system.

  12. Key Techniques for Dynamic Updating of National Fundamental Geographic Information Database

    OpenAIRE

    Wang, Donghua; Liu, Jianjun

    2015-01-01

    One of the most important missions of fundamental surveying and mapping work is to keep the fundamental geographic information fresh. In this respect, National Administration of Surveying, Mapping and Geoinformation has launched the project of dynamic updating of national fundamental geographic information database since 2012, which aims to update 1:50 000, 1:250 000 and 1:1 000 000 national fundamental geographic information database continuously and quickly, by updating and publishing once ...

  13. Hospital distribution in a metropolitan city: assessment by a geographic information system grid modelling approach.

    Science.gov (United States)

    Lee, Kwang-Soo; Moon, Kyeong-Jun

    2014-05-01

    Grid models were used to assess urban hospital distribution in Seoul, the capital of South Korea. A geographical information system (GIS) based analytical model was developed and applied to assess the situation in a metropolitan area with a population exceeding 10 million. Secondary data for this analysis were obtained from multiple sources: the Korean Statistical Information Service, the Korean Hospital Association and the Statistical Geographical Information System. A grid of cells measuring 1 × 1 km was superimposed on the city map and a set of variables related to population, economy, mobility and housing were identified and measured for each cell. Socio-demographic variables were included to reflect the characteristics of each area. Analytical models were then developed using GIS software with the number of hospitals as the dependent variable. Applying multiple linear regression and geographically weighted regression models, three factors (highway and major arterial road areas; number of subway entrances; and row house areas) were statistically significant in explaining the variance of hospital distribution for each cell. The overall results show that GIS is a useful tool for analysing and understanding location strategies. This approach appears a useful source of information for decision-makers concerned with the distribution of hospitals and other health care centres in a city.

  14. Hospital distribution in a metropolitan city: assessment by a geographical information system grid modelling approach

    Directory of Open Access Journals (Sweden)

    Kwang-Soo Lee

    2014-05-01

    Full Text Available Grid models were used to assess urban hospital distribution in Seoul, the capital of South Korea. A geographical information system (GIS based analytical model was developed and applied to assess the situation in a metropolitan area with a population exceeding 10 million. Secondary data for this analysis were obtained from multiple sources: the Korean Statistical Information Service, the Korean Hospital Association and the Statistical Geographical Information System. A grid of cells measuring 1 × 1 km was superimposed on the city map and a set of variables related to population, economy, mobility and housing were identified and measured for each cell. Socio-demographic variables were included to reflect the characteristics of each area. Analytical models were then developed using GIS software with the number of hospitals as the dependent variable. Applying multiple linear regression and geographically weighted regression models, three factors (highway and major arterial road areas; number of subway entrances; and row house areas were statistically significant in explaining the variance of hospital distribution for each cell. The overall results show that GIS is a useful tool for analysing and understanding location strategies. This approach appears a useful source of information for decision-makers concerned with the distribution of hospitals and other health care centres in a city.

  15. The new geographic information system in ETVA VI.PE.

    Science.gov (United States)

    Xagoraris, Zafiris; Soulis, George

    2016-08-01

    ETVA VI.PE. S.A. is a member of the Piraeus Bank Group of Companies and its activities include designing, developing, exploiting and managing Industrial Areas throughout Greece. Inside ETVA VI.PE.'s thirty-one Industrial Parks there are currently 2,500 manufacturing companies established, with 40,000 employees and € 2.5 billion of invested funds. In each one of the industrial areas ETVA VI.PE guarantees the companies industrial lots of land (sites) with propitious building codes and complete infrastructure networks of water supply, sewerage, paved roads, power supply, communications, cleansing services, etc. The development of Geographical Information System for ETVA VI.PE.'s Industrial Parks started at the beginning of 1992 and consists of three subsystems: Cadastre, that manages the information for the land acquisition of Industrial Areas; Street Layout - Sites, that manages the sites sold to manufacturing companies; Networks, that manages the infrastructure networks (roads, water supply, sewerage etc). The mapping of each Industrial Park is made incorporating state-of-the-art photogrammetric, cartographic and surveying methods and techniques. Passing through the phases of initial design (hybrid GIS) and system upgrade (integrated Gis solution with spatial database), the system is currently operating on a new upgrade (integrated gIS solution with spatial database) that includes redesigning and merging the system's database schemas, along with the creation of central security policies, and the development of a new web GIS application for advanced data entry, highly customisable and standard reports, and dynamic interactive maps. The new GIS bring the company to advanced levels of productivity and introduce the new era for decision making and business management.

  16. Geographical Information Systems: Thoughts regarding implementation and transitions between steps

    Energy Technology Data Exchange (ETDEWEB)

    Norton, F.J.

    1996-06-10

    Approximately 539 organizations from around the world offer products and services that are related to Geographical Information Systems (GIS). The evolution of the annual GIS industry runs parallel to the development of the GIS in many organizations throughout the world. The GIS field experienced tremendous growth in recent years in response to the expanding information needs of business and government and to technological advances such as faster, cheaper microcomputers, user-friendly desktop software, and low-cost and widely available spatial data. Dataquest, Inc., a computer-industry, market-research firm based in San Jose, California estimates the 1993 GIS hardware and software market at $1.8 billion, up 897% from $177.2 million in 1987. These figures indicate the enormous magnitude of the GIS market without even including vital and growing components such as services (e.g., consulting and integration) or spatial data. The latter part of this paper will address the GIS implementation process. There are many ways to implement GIS within your organization. The transitions between the steps of a GIS implementation project are more difficult than the steps themselves. Yet these transitions are often underestimated or overlooked in the planning process and the management of the project. Transitions in the GIS implementation process must be anticipated, planned, and managed as carefully as the development activities. Many new companies entered and flourished in the fledgling GIS business in the late 1980s and early 1990s. On the other hand, some were not so lucky, and survey results show considerable turnover in company names over the years. Regardless, the industry still is attractive for new entrants. Of the companies existing in 1995, 9% were founded in 1993 or later.

  17. Rock slope stability analysis along the North Carolina section of the Blue Ridge Parkway: Using a geographic information system (GIS) to integrate site data and digital geologic maps

    Science.gov (United States)

    Latham, R.S.; Wooten, R.M.; Cattanach, B.L.; Merschat, C.E.; Bozdog, G.N.

    2009-01-01

    In 2008, the North Carolina Geological Survey (NCGS) completed a five-year geologic and geohazards inventory of the 406-km long North Carolina segment of the Blue Ridge Parkway (BRP). The ArcGIS??? format deliverables for rock slopes include a slope movement and slope movement deposit database and maps and site-specific rock slope stability assessments at 158 locations. Database entries for known and potential rock slope failures include: location data, failure modes and dimensions, activity dates and levels, structural and lithologic data, the occurrence of sulfide minerals and acid-producing potential test results. Rock slope stability assessments include photographs of the rock cuts and show locations and orientations of rock data, seepage zones, and kinematic stability analyses. Assigned preliminary geologic hazard ratings of low, moderate and high indicate the generalized relative probability of rock fall and/or rock slide activity at a given location. Statistics compiled based on the database indicate some general patterns within the data. This information provides the National Park Service with tools that can aid in emergency preparedness, and in budgeting mitigation, maintenance and repair measures. Copyright 2009 ARMA, American Rock Mechanics Association.

  18. A geographical information system using the Google Map API for guidance to referral hospitals.

    Science.gov (United States)

    Kobayashi, Shinji; Fujioka, Tetsushi; Tanaka, Yuji; Inoue, Michiyoshi; Niho, Yoshiyuki; Miyoshi, Akira

    2010-12-01

    Our hospital acts as a regional core hospital through inter-hospital collaboration. Geographical information is necessary to guide patients to the other hospitals. Although paper maps, which contain directions, nearest public transportation, etc., are usually provided to guide patients to the hospitals, the geographical information tends to change daily. However, updating the geographical information on the maps is costly. We constructed an electronic geographical information system using the Google Map API ( http://code.google.com/apis/maps/ ) with open source software to improve our ability to collaborate with other clinics.

  19. Analysis of the potential production and the development of bioenergy in the province of Mendoza - Bio-fuels and biomass - Using geographic information systems

    International Nuclear Information System (INIS)

    In this work, the partial results of the potential production of energy, starting from the biomass and the development of the crops, directed to the production of bio-fuels (Colza and Topinamur) in the North irrigation oasis of Mendoza, Argentina within the National Program of Bio-energy developed by INTA is presented. For the evaluation of the bio-energetic potential, derived from the biomass, the WISDOM methodology developed by FAO and implemented by INTA in Argentina was applied with the collaboration of national and provincial governmental entities that contribute local information The study of the potential production and the development of the bio-energetic crops have been carried out with the advising and participation of the experts of INTA of the studied crops. The province of Mendoza has semi-deserted agro-climatic characteristics. The type of soil and type of weather allows the production of great quality fruits and vegetables in the irrigated areas. The four great currents of water conform three oasis; Northeast, Center and South, which occupy the 3.67% of the surface of Mendoza. Today, Mendoza has 267,889 irrigated hectares, but the surface that was farmed by irrigation was near to the 400,000 ha. The climate contingencies, froze and hailstorm precipitations, plus the price instability cause great losses in the productive sector, taking it to the forlornness of the exploitations. The crop setting of these forlornness lands with crops directed to the production of bio-fuels and the utilization of the biomass coming from the agriculture activities and the agro industry (pruning of fruit trees, refuses of olive and vine, remnants of the peach industry, etc.) could assist the access to the energy in the rural areas, stimulating the economical improvement and the development in these communities. (author)

  20. Analysis of the potential production and the development of bioenergy in the province of Mendoza - Bio-fuels and biomass - Using geographic information systems

    Energy Technology Data Exchange (ETDEWEB)

    Flores Marco, Noelia; Hilbert, Jorge Antonio [Instituto de Ingenieria Rural, INTA Las Cabanas y Los Reseros s/n, CP: 1712 Castelar, Buenos Aires (Argentina); Silva Colomer, Jorge [INTA EEA Junin Mendoza, Carril Isidoro Busquets s/n CP: 5572 (Argentina); Anschau, Renee Alicia; Carballo, Stella [Instituto de Clima y Agua, INTA. Las Cabanas y Los Reseros s/n, CP:1712 Castelar, Buenos Aires (Argentina)

    2010-06-15

    In this work, the partial results of the potential production of energy, starting from the biomass and the development of the crops, directed to the production of bio-fuels (Colza and Topinamur) in the North irrigation oasis of Mendoza, Argentina within the National Program of Bio-energy developed by INTA is presented. For the evaluation of the bio-energetic potential, derived from the biomass, the WISDOM methodology developed by FAO and implemented by INTA in Argentina was applied with the collaboration of national and provincial governmental entities that contribute local information The study of the potential production and the development of the bio-energetic crops have been carried out with the advising and participation of the experts of INTA of the studied crops. The province of Mendoza has semi-deserted agro-climatic characteristics. The type of soil and type of weather allows the production of great quality fruits and vegetables in the irrigated areas. The four great currents of water conform three oasis; Northeast, Center and South, which occupy the 3.67% of the surface of Mendoza. Today, Mendoza has 267,889 irrigated hectares, but the surface that was farmed by irrigation was near to the 400,000 ha. The climate contingencies, froze and hailstorm precipitations, plus the price instability cause great losses in the productive sector, taking it to the forlornness of the exploitations. The crop setting of these forlornness lands with crops directed to the production of bio-fuels and the utilization of the biomass coming from the agriculture activities and the agro industry (pruning of fruit trees, refuses of olive and vine, remnants of the peach industry, etc.) could assist the access to the energy in the rural areas, stimulating the economical improvement and the development in these communities. (author)

  1. From Pixels to Geographic Objects in Remote Sensing Image Analysis

    NARCIS (Netherlands)

    Addink, E.A.; Van Coillie, Frieke M.B.; Jong, Steven M. de

    2012-01-01

    Traditional image analysis methods are mostly pixel-based and use the spectral differences of landscape elements at the Earth surface to classify these elements or to extract element properties from the Earth Observation image. Geographic object-based image analysis (GEOBIA) has received considerabl

  2. Operational Automatic Remote Sensing Image Understanding Systems: Beyond Geographic Object-Based and Object-Oriented Image Analysis (GEOBIA/GEOOIA. Part 2: Novel system Architecture, Information/Knowledge Representation, Algorithm Design and Implementation

    Directory of Open Access Journals (Sweden)

    Luigi Boschetti

    2012-09-01

    Full Text Available According to literature and despite their commercial success, state-of-the-art two-stage non-iterative geographic object-based image analysis (GEOBIA systems and three-stage iterative geographic object-oriented image analysis (GEOOIA systems, where GEOOIA/GEOBIA, remain affected by a lack of productivity, general consensus and research. To outperform the Quality Indexes of Operativeness (OQIs of existing GEOBIA/GEOOIA systems in compliance with the Quality Assurance Framework for Earth Observation (QA4EO guidelines, this methodological work is split into two parts. Based on an original multi-disciplinary Strengths, Weaknesses, Opportunities and Threats (SWOT analysis of the GEOBIA/GEOOIA approaches, the first part of this work promotes a shift of learning paradigm in the pre-attentive vision first stage of a remote sensing (RS image understanding system (RS-IUS, from sub-symbolic statistical model-based (inductive image segmentation to symbolic physical model-based (deductive image preliminary classification capable of accomplishing image sub-symbolic segmentation and image symbolic pre-classification simultaneously. In the present second part of this work, a novel hybrid (combined deductive and inductive RS-IUS architecture featuring a symbolic deductive pre-attentive vision first stage is proposed and discussed in terms of: (a computational theory (system design, (b information/knowledge representation, (c algorithm design and (d implementation. As proof-of-concept of symbolic physical model-based pre-attentive vision first stage, the spectral knowledge-based, operational, near real-time, multi-sensor, multi-resolution, application-independent Satellite Image Automatic Mapper™ (SIAM™ is selected from existing literature. To the best of these authors’ knowledge, this is the first time a symbolic syntactic inference system, like SIAM™, is made available to the RS community for operational use in a RS-IUS pre-attentive vision first stage

  3. The Application of Geographic Information System on Telecommunication Cable Management System

    Institute of Scientific and Technical Information of China (English)

    2001-01-01

    Geographic Information System (GIS) is a computer system tomanage the geographically distributed data. It combines the process of geographic informat ion and attribute information. Telecommunication bureau has great requirements f or GIS and corresponding software platforms due to the speciality of the telecom m unication system. The design ideas, solutions and basic functions of the telecommunication GIS for the cable design and maintenance are discussed .

  4. A Volunteered Geographic Information Framework to Enable Bottom-Up Disaster Management Platforms

    OpenAIRE

    Mohammad Ebrahim Poorazizi; Andrew J.S. Hunter; Stefan Steiniger

    2015-01-01

    Recent disasters, such as the 2010 Haiti earthquake, have drawn attention to the potential role of citizens as active information producers. By using location-aware devices such as smartphones to collect geographic information in the form of geo-tagged text, photos, or videos, and sharing this information through online social media, such as Twitter, citizens create Volunteered Geographic Information (VGI). To effectively use this information for disaster management, we developed a VGI framew...

  5. Cape Cod Aquifer Management Project (CCAMP): demonstration of a geographic information system for ground water protection

    Energy Technology Data Exchange (ETDEWEB)

    Steppacher, L.

    1988-09-01

    This publication summarizes the application of GIS Technology to the project. Geographic Information systems (GIS) technology has the capability of overlaying various mapped data layers, determining distances from fixed points, automatic changing of map scales, and preparing maps from tabular point data to better understand the complex issues involved in decision making. GIS was used for a series of pilot analyses for Cape Cod. The work concentrated on the development of a digital data base and assessment at three different geographic levels of analysis: (1) the zone of contribution to nine public water-supply wells in a highly urbanized area; (2) a rural, seasonally populated, summer tourist town; and (3) the Cape Cod peninsula. The project was designed to raise issues and answer the types of ground water management questions being asked on Cape Cod, but also those faced by ground water managers in other areas of the country as well.

  6. Cartographic Encounters at the Bureau of Indian Affairs Geographic Information System Center of Calculation

    Science.gov (United States)

    Palmer, Mark H.

    2012-01-01

    The centering processes of geographic information system (GIS) development at the United States Bureau of Indian Affairs (BIA) was an extension of past cartographic encounters with American Indians through the central control of geospatial technologies, uneven development of geographic information resources, and extension of technically dependent…

  7. Geographic Information System (GIS) characterizations of benthic habitats near South Florida coast (NODC Accession 0000600)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This data collection uses a Geographic Information System (GIS) to organize and characterize information about benthic communities and substrates, which are...

  8. Technology Convergence and Social Work: When Case Management Meets Geographic Information

    OpenAIRE

    Robert Vernon

    2005-01-01

    Two information management technologies, case management systems and geographic information systems may merge. This will foster better service planning and delivery to people in need. This may also result in continued agency mergers and mission revisions.

  9. GEOGRAPHICAL INFORMATION SYSTEM, DECISION SUPPORT SYSTEMS, AND URBAN STORMWATER MANAGEMENT

    Science.gov (United States)

    The full report reviews the application of Geographic Inforamtion System (GIS) technology to the field of urban stormwater modeling. The GIS literature is reviewed in the context of its use as a spatial database for urban stormwater modeling, integration of GIS and hydroloic time...

  10. 1998 Baseline Sampling and Analysis Sampling Locations, Geographic NAD83, LOSCO (2004) [BSA_1998_sample_locations_LOSCO_2004

    Data.gov (United States)

    Louisiana Geographic Information Center — The monitor point data set was produced as a part of the Baseline Sampling and Analysis program coordinated by the Louisiana Oil Spill Coordinator's Office. This...

  11. 1999 Baseline Sampling and Analysis Sampling Locations, Geographic NAD83, LOSCO (2004) [BSA_1999_sample_locations_LOSCO_2004

    Data.gov (United States)

    Louisiana Geographic Information Center — The monitor point data set was produced as a part of the Baseline Sampling and Analysis program coordinated by the Louisiana Oil Spill Coordinator's Office. This...

  12. 1997 Baseline Sampling and Analysis Sample Locations, Geographic NAD83, LOSCO (2004) [BSA_1997_sample_locations_LOSCO_2004

    Data.gov (United States)

    Louisiana Geographic Information Center — The monitor point data set was produced as a part of the Baseline Sampling and Analysis (BSA) program coordinated by the Louisiana Oil Spill Coordinator's Office....

  13. Using a 'value-added' approach for contextual design of geographic information.

    Science.gov (United States)

    May, Andrew J

    2013-11-01

    The aim of this article is to demonstrate how a 'value-added' approach can be used for user-centred design of geographic information. An information science perspective was used, with value being the difference in outcomes arising from alternative information sets. Sixteen drivers navigated a complex, unfamiliar urban route, using visual and verbal instructions representing the distance-to-turn and junction layout information presented by typical satellite navigation systems. Data measuring driving errors, navigation errors and driver confidence were collected throughout the trial. The results show how driver performance varied considerably according to the geographic context at specific locations, and that there are specific opportunities to add value with enhanced geographical information. The conclusions are that a value-added approach facilitates a more explicit focus on 'desired' (and feasible) levels of end user performance with different information sets, and is a potentially effective approach to user-centred design of geographic information.

  14. Geographic Information System arboretum garden of Sochi "Dendrarium"

    Directory of Open Access Journals (Sweden)

    Annenkova Irina Vladimirovna

    2014-11-01

    Full Text Available Program is designed to monitoring of arboretum collections. It has features that take into account the specifics of such collections: a period of survival new plantings, change dendrometric and phytosanitary characteristics of woody plants with age, the need to analyze the causes of mortality. Geobaza includes three magazines to track for living collection, landings and removing plants. Each magazine is represented on the map by three layers: single specimens, hedgerows and groups. Tables of landings and removing plants magazines contain dendrometric and cartographic information for each object. The living collection magazine dendrometric information is stored in separate tables. It allows to save data about changes that occur during the lifetime of plants. Geobaza stores information about date of planting, sapling age, the taxonomic name, the identifier of introduction specimens , the lawn of growth, plant life-form, trunk diameter, plant height, size, crown, decoration, phytosanitary condition, damage by diseases and pests, the date and the age removing. Program's taxonomic dictonary keeps names of families, species, infraspecific taxa and cultivars of plants. It's based on plant taxonomic database "Plant List", which freely accessible at http://www.theplantlist.org. Dictonary allows to edit the name and systematic position of taxon, the conservation status according by IUCN Red Data Book, Red Books Russia and the Krasnodar Territory, allows writing floristic regions, habitats and rank uniqueness at Sochi region. The advantages of using ArcGIS software are visualization, quick search taxons and plants, getting information on the taxonomic and quantitative composition of the collection, tracking taxa remaining in a single copy, printing maps necessary scale. The program allows you to automatically generate a collection catalog, list of lawns, which grows taxon, sheets landings and removing plants, reports on the taxonomic structure of families

  15. Voronoi-Based Region Approximation for Geographical Information Retrieval with Gazetteers

    OpenAIRE

    Alani, Harith; Jones, Christopher; Tudhope, Douglas

    2001-01-01

    Gazetteers and geographical thesauri can be regarded as parsimonious spatial models that associate geographical location with place names and encode some semantic relations between the names. They are of particular value in processing information retrieval requests in which the user employs place names to specify geographical context. Typically the geometric locational data in a gazetteer are confined to a simple footprint in the form of a centroid or a minimum bounding rectangle, both of whi...

  16. The study of disaster situation awareness based on volunteered geographic information

    Science.gov (United States)

    Zhao, Qiansheng; Chen, Zi; Li, Shengming; Luo, Nianxue

    2015-12-01

    As the development of Web 2.0, the social media like microblog, blogs and social network have supplied a bunch of information with locations (Volunteered Geographical Information, VGI).Recent years many cases have shown that, if disaster happened, the cyber citizens will get together very quickly and share the disaster information, this results a bunch of volunteered geographical information about disaster situation which is very valuable for disaster response if this VGIs are used efficiently and properly. This project will take typhoon disaster as case study. In this paper, we study the relations between weibo messages and the real typhoon situation, we proposed an analysis framework for mine the relations between weibo messages distribution and physical space. We found that the number of the weibo messages, key words frequency and spatial temporary distribution of the messages have strong relations with the disaster spread in the real world, and this research results can improve our disaster situation awareness in the future. The achievement of the study will give a method for typhoon disaster situation awareness based on VGI from the bottom up, and will locate the disaster spot and evolution quickly which is very important for disaster response and recover.

  17. Assessing sustainable land-use practices using geographic information systems

    Science.gov (United States)

    Davis, Amelie Y.

    Many prominent scientists have claimed that we need to develop environmentally sustainable practices otherwise societies may collapse. The use of Geographic Information Systems allows detailed studies that can cross disciplinary boundaries and lead to quantifiable statements as to the change of land use practices that took place in the past and those that may occur in the future. This dissertation focuses on two research topics. One that attempts to quantify the environmental consequences of parking lots located in the Midwest, USA. The other research topic focuses on the land area needed to support ethanol in the United States. In Tippecanoe County, Indiana, it was determined that parking lots occupied approximately 6.6% of the urban areas, that the area devoted to parking lots exceeded the area devoted to urban parks by a factor of 3, and that these parking lots contributed to increased runoff of pollutants. The parking lots of Tippecanoe County were estimated to be responsible for 46.5 thousand pounds of oil and grease released annually in runoff, as well as an increase of 240.6 thousand pounds of suspended solids, and 65.7 pounds of lead released when compared to pre-development conditions. A method that scales up the county wide study was also developed to determine the areal footprint of parking lots with the states of Illinois, Indiana, Michigan and Wisconsin. It was estimated that these four states allocate approximately 1260 square km of their land to parking lots and that this accounts for 4.97% of urban land use and over 43 million parking spaces, whereas the number of individuals in age of driving (adults over 18 years old) amounted to just over 25 million. Within the four states studied, states where urban sprawl was considered more prevalent were also states that had a higher proportion of their urban land devoted to parking lots. The second dissertation topic focused on using GIS to locate suitable sites for corn or cellulosic based ethanol

  18. The Abduction of Geographic Information Science: Transporting Spatial Reasoning to the Realm of Purpose and Design

    Science.gov (United States)

    Couclelis, Helen

    People intuitively understand that function and purpose are critical parts of what human-configured entities are about, but these notions have proved difficult to capture formally. Even though most geographical landscapes bear traces of human purposes, visibly expressed in the spatial configurations meant to serve these purposes, the capability of GIS to represent means-ends relationships and to support associated reasoning and queries is currently quite limited. This is because spatial thinking as examined and codified in geographic information science is overwhelmingly of the descriptive, analytic kind that underlies traditional science, where notions of means and ends play a negligible role. This paper argues for the need to expand the reach of formalized spatial thinking to also encompass the normative, synthetic kinds of reasoning characterizing planning, engineering and the design sciences in general. Key elements in a more comprehensive approach to spatial thinking would be the inclusion of abductive modes of inference along with the deductive and inductive ones, and the development of an expanded geographic ontology that integrates analysis and synthesis, form and function, landscape and purpose, description and design.

  19. Making a Traditional Study-Abroad Program Geographic: A Theoretically Informed Regional Approach

    Science.gov (United States)

    Jokisch, Brad

    2009-01-01

    Geographers have been active in numerous focused study-abroad programs, but few have created or led language-based programs overseas. This article describes the development of a Spanish language program in Ecuador and how it was made geographic primarily through a theoretically informed regional geography course. The approach employs theoretical…

  20. Can a Map Be a Geographic Information Retrieval Tool?

    Directory of Open Access Journals (Sweden)

    Jan Smits

    2000-07-01

    Full Text Available This paper is intended to open up discussion on potential co-operation, which would enable participants restricted by unequal resources and technologies to participate in a pan-European project. The idea has not yet been fully developed but the purpose of the project is to allow digital maps to function not only as geographic resources and educational tools, but to act simultaneously as an interface to metadata-databases. These would contain de-scriptions of maps and spatial databases, as well as locational or geo-referenced resources in books, periodicals, and the Internet.

  1. Geographical motifs in Turkish folk music lexicon and similarity analysis

    Directory of Open Access Journals (Sweden)

    Mehmet Şahin

    2012-11-01

    Full Text Available Turkish folk music, as the name implies, is music that comes from the people and it is a kind of music that defines and tells the people. It is significantly affected by the physical and human features of the region where it is said. Turkey which is located on Anatolia that hosts many civilizations through history has rich folk music culture. The purpose of this study is to determine the effect of geography in shaping Turkish folk music and to specify Turkish folk music regions. For this purpose, 4440 Turkish folk music works which are hold in TRT repertoire are scanned and the geographic words in these works are classified according to provinces. According to these selected words, similarity levels of the provinces are identified. Hierarchical clustering analysis is applied to determine the similarity levels of the provinces. Similarity distance between provinces is calculated with the hierarchical cluster analysis. As a result of this analysis, the works of Turkish folk music influenced by geographical features and there are some similarities and interactions between localities and the regions. According to geographic vocabulary similarities used in the works of Turkish folk music, Turkey is divided into six regions, namely Western Anatolia, Central Anatolia, East Anatolia, Middle East Anatolia, Southeast Anatolia and the Black Sea region.

  2. Comprehensive assessment method for environmental impact of railway based on geographic information system

    Institute of Scientific and Technical Information of China (English)

    吴小萍; 陈秀方; 马超群; 杨晓宇; 冉茂平; 孟祥定

    2004-01-01

    By integrating the merits of the map overlay method and the geographic information system (GIS), a GIS based map overlay method was developed to analyze comprehensively the environmental vulnerability around railway and its impact on the environment, which is adapted for the comprehensive assessment of railway environmental impact and the optimization of railway alignments. The assessment process of the GIS based map overlay method was presented, which includes deciding the system structure and weights of assessment factors, making environmental vulnerability grade maps, and evaluating the alternative alignments comprehensively to obtain the best one. With the GIS functions of spatial analysis, such as overlay analysis and buffer analysis, and functions of handling attribute data, the GIS based map overlay method overcomes the shortcomings of the existing map overlay method and the conclusion is more reasonable. In the end, a detailed case study was illustrated to verify the efficiency of the method.

  3. Applications of Remote Sensing and Geographic Information System (GIS) in Archaeology

    Digital Repository Service at National Institute of Oceanography (India)

    ManiMurali, R.

    The advancement of remote sensing technology and the analysing capability of Geographical Information System (GIS) can very well be used in the science of Archaeology. Though these subjects look apart, they can be studied in conjunction with each...

  4. Geographic information systems database, Walnut Gulch Experimental Watershed, Arizona, United States 1868

    Science.gov (United States)

    We describe the geographic information system (GIS) database complementing the Walnut Gulch Experimental Watershed (WGEW) companion papers in this issue of Water Resources Research. The spatial data layers will be especially useful to researchers interested in understanding spatial characteristics o...

  5. Geographic health information systems: a platform to support the 'triple aim'.

    Science.gov (United States)

    Miranda, Marie Lynn; Ferranti, Jeffrey; Strauss, Benjamin; Neelon, Brian; Califf, Robert M

    2013-09-01

    Despite the rapid growth of electronic health data, most data systems do not connect individual patient records to data sets from outside the health care delivery system. These isolated data systems cannot support efforts to recognize or address how the physical and environmental context of each patient influences health choices and health outcomes. In this article we describe how a geographic health information system in Durham, North Carolina, links health system and social and environmental data via shared geography to provide a multidimensional understanding of individual and community health status and vulnerabilities. Geographic health information systems can be useful in supporting the Institute for Healthcare Improvement's Triple Aim Initiative to improve the experience of care, improve the health of populations, and reduce per capita costs of health care. A geographic health information system can also provide a comprehensive information base for community health assessment and intervention for accountable care that includes the entire population of a geographic area. PMID:24019366

  6. The Design of Data Disaster Recovery of National Fundamental Geographic Information System

    Science.gov (United States)

    Zhai, Y.; Chen, J.; Liu, L.; Liu, J.

    2014-04-01

    With the development of information technology, data security of information system is facing more and more challenges. The geographic information of surveying and mapping is fundamental and strategic resource, which is applied in all areas of national economic, defence and social development. It is especially vital to national and social interests when such classified geographic information is directly concerning Chinese sovereignty. Several urgent problems that needs to be resolved for surveying and mapping are how to do well in mass data storage and backup, establishing and improving the disaster backup system especially after sudden natural calamity accident, and ensuring all sectors rapidly restored on information system will operate correctly. For overcoming various disaster risks, protect the security of data and reduce the impact of the disaster, it's no doubt the effective way is to analysis and research on the features of storage and management and security requirements, as well as to ensure that the design of data disaster recovery system suitable for the surveying and mapping. This article analyses the features of fundamental geographic information data and the requirements of storage management, three site disaster recovery system of DBMS plan based on the popular network, storage and backup, data replication and remote switch of application technologies. In LAN that synchronous replication between database management servers and the local storage of backup management systems, simultaneously, remote asynchronous data replication between local storage backup management systems and remote database management servers. The core of the system is resolving local disaster in the remote site, ensuring data security and business continuity of local site. This article focuses on the following points: background, the necessity of disaster recovery system, the analysis of the data achievements and data disaster recovery plan. Features of this program is to use a

  7. Using Participatory Methods and Geographic Information Systems (GIS) to Prepare for an HIV Community-Based Trial in Vulindlela, South Africa (Project Accept-HPTN 043)

    Science.gov (United States)

    Chirowodza, Admire; van Rooyen, Heidi; Joseph, Philip; Sikotoyi, Sindisiwe; Richter, Linda; Coates, Thomas

    2009-01-01

    Recent attempts to integrate geographic information systems (GIS) and participatory techniques, have given rise to terminologies such as "participatory GIS" and "community-integrated GIS". Although GIS was initially developed for physical geographic application, it can be used for the management and analysis of health and health care data.…

  8. Geographic Information Technologies as an outreach activity in geo-scientific education

    Science.gov (United States)

    Maman, Shimrit; Isaacson, Sivan; Blumberg, Dan G.

    2016-04-01

    In recent years, a decline in the rates of examinees in the academic track that were entitled to an enhanced matriculation certificate in scientific-technological education was reported in Israel. To confront this problem the Earth and Planetary Image Facility (EPIF) at Ben-Gurion University of the Negev fosters interdisciplinary exploration through educational programs that make use of the facility and its equipment and enable the empowerment of the community by understanding and appreciating science and technology. This is achieved by using Geographic Information Technologies (GIT) such as remote sensing and Geographical Information Systems (GIS) for geo-physical sciences in activities that combine theoretical background with hands-on activities. Monitoring Earth from space by satellites, digital atlases and virtual-based positioning applications are examples for fusion of spatial information (geographic) and technology that the activity is based on. GIT opens a new chapter and a recent history of Cartography starting from the collection of spatial data to its presentation and analysis. GIS have replaced the use of classical atlas books and offer a variety of Web-based applications that provide maps and display up-to-date imagery. The purpose of this workshop is to expose teachers and students to GITs which are applicable in every classroom. The activity imparts free geographic information systems that exist in cyberspace and accessible to single users as the Israeli national GIS and Google earth, which are based on a spatial data and long term local and global satellite imagery coverage. In this paper, our "Think global-Map Local" activity is presented. The activity uses GIS and change detection technologies as means to encourage students to explore environmental issues both around the globe and close to their surroundings. The students detect changes by comparing multi temporal images of a chosen site and learn how to map the alterations and produce change

  9. Technology Integration around the Geographic Information: A State of the Art

    OpenAIRE

    Rocio Vargas; Gabriel Gonzalez-Serna; Rafael Ponce-Medellin; Lirio Ruiz

    2009-01-01

    One of the elements that have popularized and facilitated the use of geographical information on a variety of computational applications has been the use of Web maps; this has opened new research challenges on different subjects, from locating places and people, the study of social behavior or the analyzing of the hidden structures of the terms used in a natural language query used for locating a place. However, the use of geographic information under technological features is not new, instea...

  10. The Building of Environmental Geographic Information System for Supporting Environmental Policymaking in Korea

    OpenAIRE

    Bae, Minki; Cho, Deokho; Um, HongSuk; Shin, Dongho

    2004-01-01

    The goal of this study is to build a geographic information system for environmental policymaking. To achieve this goal, this study first surveys the local environment status. Based upon the collected environmental data, it forecasts the future environmental status of each city in Gyeongbuk province and generates a geo-referencing code. Finally, by using these data, it builds up a future environmental geographic information system for supporting environmental policymaking. This study consists...

  11. Boosting Geographic Information System’s Performance Using In-Memory Data Grid

    OpenAIRE

    Navin Rajpal; Vandana Sharma; Barkha Bahl

    2012-01-01

    A typical Geographic Information System(GIS) is informationsystem that integrates, stores, edits, analyzes, shares anddisplays geographic information for effective decision making.The focus here is to refine the storing and retrievingcapabilities of any GIS. GIS application have a very highperformance and scalability requirement, such as queryresponse time of less than 3 seconds, 120000 customer sessionsper hour and 100000 data addition/updates per day. Also anideal GIS application always dea...

  12. Geographic information systems (GIS) for Health Promotion and Public Health: a review.

    Science.gov (United States)

    Nykiforuk, Candace I J; Flaman, Laura M

    2011-01-01

    The purpose of this literature review is to identify how geographic information system (GIS) applications have been used in health-related research and to critically examine the issues, strengths, and challenges inherent to those approaches from the lenses of health promotion and public health. Through the review process, conducted in 2007, it is evident that health promotion and public health applications of GIS can be generally categorized into four predominant themes: disease surveillance (n = 227), risk analysis (n = 189), health access and planning (n = 138), and community health profiling (n = 115). This review explores how GIS approaches have been used to inform decision making and discusses the extent to which GIS can be applied to address health promotion and public health questions. The contribution of this literature review will be to generate a broader understanding of how GIS-related methodological techniques and tools developed in other disciplines can be meaningfully applied to applications in public health policy, promotion, and practice.

  13. Inferring geographic coordinates of origin for Europeans using small panels of ancestry informative markers.

    Directory of Open Access Journals (Sweden)

    Petros Drineas

    Full Text Available Recent large-scale studies of European populations have demonstrated the existence of population genetic structure within Europe and the potential to accurately infer individual ancestry when information from hundreds of thousands of genetic markers is used. In fact, when genomewide genetic variation of European populations is projected down to a two-dimensional Principal Components Analysis plot, a surprising correlation with actual geographic coordinates of self-reported ancestry has been reported. This substructure can hamper the search of susceptibility genes for common complex disorders leading to spurious correlations. The identification of genetic markers that can correct for population stratification becomes therefore of paramount importance. Analyzing 1,200 individuals from 11 populations genotyped for more than 500,000 SNPs (Population Reference Sample, we present a systematic exploration of the extent to which geographic coordinates of origin within Europe can be predicted, with small panels of SNPs. Markers are selected to correlate with the top principal components of the dataset, as we have previously demonstrated. Performing thorough cross-validation experiments we show that it is indeed possible to predict individual ancestry within Europe down to a few hundred kilometers from actual individual origin, using information from carefully selected panels of 500 or 1,000 SNPs. Furthermore, we show that these panels can be used to correctly assign the HapMap Phase 3 European populations to their geographic origin. The SNPs that we propose can prove extremely useful in a variety of different settings, such as stratification correction or genetic ancestry testing, and the study of the history of European populations.

  14. Joint Service Common Operating Environment (COE) Common Geographic Information System functional requirements

    Energy Technology Data Exchange (ETDEWEB)

    Meitzler, W.D.

    1992-06-01

    In the context of this document and COE, the Geographic Information Systems (GIS) are decision support systems involving the integration of spatially referenced data in a problem solving environment. They are digital computer systems for capturing, processing, managing, displaying, modeling, and analyzing geographically referenced spatial data which are described by attribute data and location. The ability to perform spatial analysis and the ability to combine two or more data sets to create new spatial information differentiates a GIS from other computer mapping systems. While the CCGIS allows for data editing and input, its primary purpose is not to prepare data, but rather to manipulate, analyte, and clarify it. The CCGIS defined herein provides GIS services and resources including the spatial and map related functionality common to all subsystems contained within the COE suite of C4I systems. The CCGIS, which is an integral component of the COE concept, relies on the other COE standard components to provide the definition for other support computing services required.

  15. Geographic Place Names, Geographic Names; GNIS11; The Geographic Names Information System, developed by the USGS in cooperation with the U.S. Board on Geographic Names, contains information about physical and cultural geographic features in the US and associated areas., Published in 2011, 1:24000 (1in=2000ft) scale, State of Rhode Island and Providence Plantations.

    Data.gov (United States)

    NSGIC GIS Inventory (aka Ramona) — This Geographic Place Names dataset, published at 1:24000 (1in=2000ft) scale, was produced all or in part from Hardcopy Maps information as of 2011. It is described...

  16. PUBLIC DECISIONS AND CITIZEN SATISFACTION: THE POTENTIAL ROLE OF PUBLIC PARTICIPATION GEOGRAPHIC INFORMATION SYSTEMS

    Directory of Open Access Journals (Sweden)

    Paola Barbara Floreddu

    2012-06-01

    Full Text Available The concept of “public participation” is currently of great interest to researchers and policymakers. The major challenge that this concept presents is the development of methods to verify the results of the effects of inclusive participation practices on decision-making processes1. There is also a lack of evaluation methods regarding the participation of the public through Public Participation Geographic Information Systems (PPGISs. To fill this gap, the ongoing research has two objectives: first, to develop an analytical framework through which PPGIS initiatives can be evaluated; second, to apply the above-mentioned framework to a multi-case study to analyze and evaluate the results obtained from different PPGIS projects. In detail, we investigate the level of citizens’ satisfaction regarding their active participation within PPGIS projects. To achieve the above-mentioned objectives, we apply cross-case analysis and content analysis methodologies.

  17. Landscape Epidemiology Modeling Using an Agent-Based Model and a Geographic Information System

    Directory of Open Access Journals (Sweden)

    S. M. Niaz Arifin

    2015-05-01

    Full Text Available A landscape epidemiology modeling framework is presented which integrates the simulation outputs from an established spatial agent-based model (ABM of malaria with a geographic information system (GIS. For a study area in Kenya, five landscape scenarios are constructed with varying coverage levels of two mosquito-control interventions. For each scenario, maps are presented to show the average distributions of three output indices obtained from the results of 750 simulation runs. Hot spot analysis is performed to detect statistically significant hot spots and cold spots. Additional spatial analysis is conducted using ordinary kriging with circular semivariograms for all scenarios. The integration of epidemiological simulation-based results with spatial analyses techniques within a single modeling framework can be a valuable tool for conducting a variety of disease control activities such as exploring new biological insights, monitoring epidemiological landscape changes, and guiding resource allocation for further investigation.

  18. Analysing the Sustainability of Urban Development: A review on the Potential Use of Volunteered Geographic Information

    Science.gov (United States)

    Ibrahim, N.; Ujang, U.; Desa, G.; Ariffin, A.

    2015-10-01

    The challenges of how to ensure sustainable urban development are currently one of the important agenda among governments around the world. The stakeholders require the latest and high volume of geographic information for the decision making process to efficiently respond to challenges, improve service delivery to citizens, and plan a successful future of the city. However, it is time-consuming and costly to get the available information and some of the information is not up-to-date. Recently, GeoWeb 2.0 technological advances have increased the number of volunteers from non-professional citizen to contribute to the collection, sharing, and distribution of geographic information. The information known as Volunteered Geographic Information (VGI) has generated another approach of spatial data sources that can give up-to-date, huge volume of data, and available geographic information in a low cost for various applications. With this in mind, this paper presents a review of literature based on the potential use of Volunteered Geographic Information (VGI) in measuring sustainability of urban development. The review highlighted that social, economic, and environment as three pertinent pillars relating to the use of VGI for measurement sustainable urban development.

  19. 2010 VA Information Technologies Agency (VITA)/VA Geographic Information Network (VGIN) Lidar: Eastern Shore, VA (Accomack and Northampton Counties)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The Virginia Geographic Information Network (VGIN) contracted with Sanborn to provide LiDAR mapping services for Accomack and Northampton counties on the eastern...

  20. Integration of Geographic Information System frameworks into domain discretisation and meshing processes for geophysical models

    Directory of Open Access Journals (Sweden)

    A. S. Candy

    2014-09-01

    Full Text Available Computational simulations of physical phenomena rely on an accurate discretisation of the model domain. Numerical models have increased in sophistication to a level where it is possible to support terrain-following boundaries that conform accurately to real physical interfaces, and resolve a multiscale of spatial resolutions. Whilst simulation codes are maturing in this area, pre-processing tools have not developed significantly enough to competently initialise these problems in a rigorous, efficient and recomputable manner. In the relatively disjoint field of Geographic Information Systems (GIS however, techniques and tools for mapping and analysis of geographical data have matured significantly. If data provenance and recomputability are to be achieved, the manipulation and agglomeration of data in the pre-processing of numerical simulation initialisation data for geophysical models should be integrated into GIS. A new approach to the discretisation of geophysical domains is presented, and introduced with a verified implementation. This brings together the technologies of geospatial analysis, meshing and numerical simulation models. This platform enables us to combine and build up features, quickly drafting and updating mesh descriptions with the rigour that established GIS tools provide. This, combined with the systematic workflow, supports a strong provenance for model initialisation and encourages the convergence of standards.

  1. Integration of Geographic Information System frameworks into domain discretisation and meshing processes for geophysical models

    Science.gov (United States)

    Candy, A. S.; Avdis, A.; Hill, J.; Gorman, G. J.; Piggott, M. D.

    2014-09-01

    Computational simulations of physical phenomena rely on an accurate discretisation of the model domain. Numerical models have increased in sophistication to a level where it is possible to support terrain-following boundaries that conform accurately to real physical interfaces, and resolve a multiscale of spatial resolutions. Whilst simulation codes are maturing in this area, pre-processing tools have not developed significantly enough to competently initialise these problems in a rigorous, efficient and recomputable manner. In the relatively disjoint field of Geographic Information Systems (GIS) however, techniques and tools for mapping and analysis of geographical data have matured significantly. If data provenance and recomputability are to be achieved, the manipulation and agglomeration of data in the pre-processing of numerical simulation initialisation data for geophysical models should be integrated into GIS. A new approach to the discretisation of geophysical domains is presented, and introduced with a verified implementation. This brings together the technologies of geospatial analysis, meshing and numerical simulation models. This platform enables us to combine and build up features, quickly drafting and updating mesh descriptions with the rigour that established GIS tools provide. This, combined with the systematic workflow, supports a strong provenance for model initialisation and encourages the convergence of standards.

  2. Turisbook: Social Network of Tourism with Geographical Information

    Science.gov (United States)

    García, Eva; García, Antonio; de-Marcos, Luis; Hilera, José-Ramón

    This article presents the social network of tourism Turisbook. This social network allows sharing information and opinions about worldwide travel destinations. It incorporates a geo-location system of points on a map, so that user can search quickly and easily tourist points in a given area. The system allows users to upload their own tourist points with associated information and photos. In this manner, the system feeds with user contributions, allowing discovering places that usually do not appear in traditional guidebooks.

  3. Management of Information and Infrastructure of Indigenous Community at Royal Belum State Park Using Geographical Information System: A Conceptual Design

    OpenAIRE

    Othman Zainon

    2015-01-01

    Abstract. Nowadays, an integrated location, descriptive inventory data and geographical information are required for a better decision making in Indigenous community management activities. The management system can improve productivity and to save time, money and man power. Conventional maps and Indigenous inventories on papers or spread sheet are lack of meeting these requirements which are not static and subjected to change rapidly. The Geographic Information Systems (GIS) and Database Mana...

  4. Political aspects of geographical information technologies with examples from imperial and post-independence India

    Science.gov (United States)

    Dudley, Graham David

    The goal of this research is to examine some of the political dimensions of digital geographical information technologies in order to allow better assessment of their increasing use. Although the conclusions and recommendations are applicable to many regions of the world where these technologies are being introduced, this research derives most of its examples from India. Since at least the early days of British imperialism, decisions regarding land use in India have been informed by various types of information, including cartographic ones. In this thesis it is argued that this information was neither neutral nor objective but rather formed political and ideological statements concerning social relations with the landscape. These statements were reflected both in the nature of the data which were collected and in the ways in which these data were presented. By examining the historical evolution of geographical information technologies in British India and attendant social and environmental impacts, the stage is set for critical speculation on the possible impacts resulting from the introduction of digital geographical information technologies such as remote sensing and geographical information systems. This research draws heavily from the work of historian of cartography Brian Harley. Harley's work is extended to include consideration of the ways in which human-environment relationships are reflected and altered by geographic information technologies. This discussion of possible political and environment implications is influenced by recent literature in the areas of political ecology and the history of cartography. It is concluded that although there are many obstacles including unequal access to the technology, unequal access to information, and issues of control over information creation, which may reinforce and intensify existing social and political inequities, there is cause for some cautious optimism about the potential beneficial outcomes of the use of

  5. Charting Geographic Mental Maps in Foreign Policy Analysis: A Literature Review

    OpenAIRE

    Vinha, Luis da

    2012-01-01

    In recent years geographic mental maps have made a comeback into the spotlight of scholarly inquiry in the area of Foreign Policy Analysis (FPA). While never disappearing completely from scholarly examination, geographic mental maps were side-lined in most geographic and international relations (IR) research agendas. While geographers had long acknowledged the importance of mental maps in the study of international politics, few studies centred on the influence of geographic cognition on fore...

  6. Intelligence from Space: Using Geographical Information Systems for Competitive Intelligence

    NARCIS (Netherlands)

    Hendriks, P.H.J.

    2004-01-01

    The spatial element, which is omnipresent in data and information relevant to organizations, is much underused in the decision-making processes within organizations. This applies also to decision-making within the domain of Competitive Intelligence. The chapter explores how the CI function may benef

  7. gpsbound: Routine for importing and verifying geographical information from a user provided shapefile

    OpenAIRE

    Brophy, Tim; Daniels, Reza Che; Musundwa, Sibongile

    2014-01-01

    Geographical coordinates such as Global Positioning System (GPS) latitude and longitude estimates form the foundation of many spatial statistical methods. gpsbound allows users to (1) import geographical information from the attribute table of a polygon shapefile based on the identified location of GPS coordinates in a Stata dataset, and (2) check that the GPS coordinates lie within the bounds of a polygon demarcated in the shapefile (e.g. enumerator areas, primary sampling units, suburb, cit...

  8. Hazards Assessment of Regional Debris Flows Based on Geographic Information Science

    Institute of Scientific and Technical Information of China (English)

    JIANG Xiaobo; GUI Peng

    2007-01-01

    Supported by the spatial analysis feature of geographic information science and assessment model of regional debris flows, hazards degrees of the debris flows in the Upper Yangtze River Watershed (UYRW) are divided into five grades based on grid cell. The area of no danger, light danger, medium danger, severe danger and extreme severe danger regions respectively are 278 000, 288 000, 217 000, 127 000, 15 000 km2. Furthermore, the counties in the UYRW are classified into four classes based on the hazards degrees in each county. The number of severe danger, medium danger, light danger and no danger counties respectively are 49, 82, 77 and 105. The assessment results will be provided for the hazards forecasting and mitigation in the UYRW and ongoing regionalization of Main Function Regions in China as data and technique framework.

  9. EVOLUTION OF THE MOSS GEOGRAPHIC INFORMATION SYSTEM FOR 32-BIT COMPUTER SYSTEMS.

    Science.gov (United States)

    Thompson, R.J.; Oleson, Lyndon R.

    1984-01-01

    The authors discuss the current status and plans regarding the 32-bit implementation of the Map Overly and Statistical System (MOSS) geographic information system. Increasing interest in this system is promoting significant expansion of its capabilities, but any such enhancements will require careful analysis and planning to ensure that the resulting system is functionally complete and efficient yet flexible enough to adapt to a variety of user requirements and systems. All enhancements must be coordinated among centers of development in order to ensure the continued viability of a single MOSS. A baseline software configuration must be defined, and procedures must be developed to ensure coordination of any modifications to the baseline. Finally, there is significant interest in maintaining the public-domain aspects of MOSS to promote its shared use in the Department of the Interior. For these reasons, coordination efforts such as those initiated by the IDCCC and the MOSS Users Workshop should be strongly supported by the MOSS user community.

  10. New insights into the application of geographical information systems and remote sensing in veterinary parasitology

    Directory of Open Access Journals (Sweden)

    Laura Rinaldi

    2006-11-01

    Full Text Available Over the past 10-15 years, significant advances have been made in the development and application of geographical information systems (GIS and remote sensing (RS. In veterinary sciences, particularly in veterinary parasitology, GIS and RS offer powerful means for disease mapping, ecological analysis and epidemiological surveillance and have become indispensable tools for processing, analysing and visualising spatial data. They can also significantly assist with the assessment of the distribution of health-relevant environmental factors via interpolation and modelling. In this review, we first summarize general aspects of GIS and RS, and emphasize the most important applications of these tools in veterinary parasitology, including recent advances in territorial sampling. Disease mapping, spatial statistics, including Bayesian inference, ecological analyses and epidemiological surveillance are summarized in the next section and illustrated with a set of figures. Finally, a set of conclusions is put forward.

  11. Requirements and principles for the implementation and construction of large-scale geographic information systems

    Science.gov (United States)

    Smith, Terence R.; Menon, Sudhakar; Star, Jeffrey L.; Estes, John E.

    1987-01-01

    This paper provides a brief survey of the history, structure and functions of 'traditional' geographic information systems (GIS), and then suggests a set of requirements that large-scale GIS should satisfy, together with a set of principles for their satisfaction. These principles, which include the systematic application of techniques from several subfields of computer science to the design and implementation of GIS and the integration of techniques from computer vision and image processing into standard GIS technology, are discussed in some detail. In particular, the paper provides a detailed discussion of questions relating to appropriate data models, data structures and computational procedures for the efficient storage, retrieval and analysis of spatially-indexed data.

  12. Role of remote sensing, geographical information system (GIS) and bioinformatics in kala-azar epidemiology.

    Science.gov (United States)

    Bhunia, Gouri Sankar; Dikhit, Manas Ranjan; Kesari, Shreekant; Sahoo, Ganesh Chandra; Das, Pradeep

    2011-11-01

    Visceral leishmaniasis or kala-azar is a potent parasitic infection causing death of thousands of people each year. Medicinal compounds currently available for the treatment of kala-azar have serious side effects and decreased efficacy owing to the emergence of resistant strains. The type of immune reaction is also to be considered in patients infected with Leishmania donovani (L. donovani). For complete eradication of this disease, a high level modern research is currently being applied both at the molecular level as well as at the field level. The computational approaches like remote sensing, geographical information system (GIS) and bioinformatics are the key resources for the detection and distribution of vectors, patterns, ecological and environmental factors and genomic and proteomic analysis. Novel approaches like GIS and bioinformatics have been more appropriately utilized in determining the cause of visearal leishmaniasis and in designing strategies for preventing the disease from spreading from one region to another.

  13. [Ecosystem services evaluation based on geographic information system and remote sensing technology: a review].

    Science.gov (United States)

    Li, Wen-Jie; Zhang, Shi-Huang; Wang, Hui-Min

    2011-12-01

    Ecosystem services evaluation is a hot topic in current ecosystem management, and has a close link with human beings welfare. This paper summarized the research progress on the evaluation of ecosystem services based on geographic information system (GIS) and remote sensing (RS) technology, which could be reduced to the following three characters, i. e., ecological economics theory is widely applied as a key method in quantifying ecosystem services, GIS and RS technology play a key role in multi-source data acquisition, spatiotemporal analysis, and integrated platform, and ecosystem mechanism model becomes a powerful tool for understanding the relationships between natural phenomena and human activities. Aiming at the present research status and its inadequacies, this paper put forward an "Assembly Line" framework, which was a distributed one with scalable characteristics, and discussed the future development trend of the integration research on ecosystem services evaluation based on GIS and RS technologies.

  14. Application of geographical information system for lymphatic filariasis and malaria control in Nigeria.

    Science.gov (United States)

    Okorie, P N

    2014-06-01

    Geographical Information System (GIS) is defined as an information system used to capture, store, edit, retrieve, analyze and visualize geographically referenced data. The use of GIS is one technology that is very useful in the prevention and control of Vector Borne Diseases (VBDs) such as lymphatic filariasis (LF) and malaria which cause high morbidity and mortality in Nigeria. This paper focuses on how the use of Geographical Information System (GIS) can be harnessed for surveillance, prevention and control of LF and malaria in Nigeria. GIS can be used as an operational tool to assist with resource allocation, as a monitoring and evaluation tool and as a tool to investigate various research projects on spatial aspects of LF and malaria epidemiology. This paper provides information on the benefits and potential of using GIS as a tool for the national malaria and LF control programmes with particular reference to Nigeria.

  15. Geographic Resolution Issues in RAM Transport Risk Analysis

    International Nuclear Information System (INIS)

    Transport risk analyses based on the RADTRAN code have been met with continual demands for increased spatial resolution of variations in population densities and other parameters employed in the calculation of risk estimates for transport of radioactive material (RAM). With the advent of geographic information systems (GISs) large quantities of data required to describe transport routes, which may extend to hundreds of kilometers, with high resolution (e.g. 1 km segments) can be handled without inordinate expense. This capability has raised a question concerning the maximum resolution of available input data and compatibility with RADTRAN computational models. Quantitative examinations are presented of spatial resolution issues in the calculation of incident-free doses and accident dose risks. For incident-free calculations, the effect of decreasing route-segment length on accuracy, in view of the model employed, is examined, and means of reducing total data input to the RADTRAN calculations, without loss of meaningful resolution of population concentrations, are presented. In the case of accident-risk calculations, the ability to detail population density under very large dispersal plumes permits comparison of plume modelling to actual data. In both types of calculations, meaningful limits to geographic extent are suggested. (author)

  16. A development of the Geographical Information Projects Index in line with the Scottish Geographic Information Strategy: “One Scotland One Geography.”

    OpenAIRE

    Bruce, David

    2008-01-01

    In 2006, a partnership between The University of Edinburgh, The Scottish Government and The Association of Geographic Information in Scotland lead to the production of an online service designed to encourage diffusion of knowledge across the Scottish GI community and beyond. The project, part of the “One Scotland One Geography” initiative, aimed to create a service whereby metadata about projects could be shared in order to create synergies and reduce repetition across the GI community. ...

  17. Geographical information systems for map based navigation in urban environments

    OpenAIRE

    Mirats-Tur, Josep M.; Zinggerling, Claudio; Corominas Murtra, Andreu

    2009-01-01

    In order to solve most of the existing mobile robotics applications, the robot needs some information about its spatial environment encoded in what it has been commonly called a map. The knowledge contained in such a map, whatever approach is used to obtain it, will mainly be used by the robot to gain the ability to navigate in a given environment. We are describing in this paper, a method that allows a robot or team of robots to navigate in large urban areas for which an existing map in a st...

  18. Problems on the application of geographic information systems to urban environmental management

    Institute of Scientific and Technical Information of China (English)

    何强; LONG; Tengrui; 等

    2002-01-01

    Geographic information systems(GIS)are a widely used tool in urban planning and management.More and more cities and deecision-makers require its attributes of promptness,precision and visualization.But the application of GIS in urban environmental management is still a new field and relevant researches are getting on tardily.As a subsystem of GIS,an urban environmental management geographic information system(UEMGIS0should be a complex multi-discipline and multi-objective tool to perform quantitative multi-dimension analysis and to transfer the results into an expression legible to an ordinary user.It should be a dynamic system of prompt functions based on upgradable databases,and be composed of many subsystems respectively specialized in items about water,air,waste and noise as well as relative standards and regulations.However, existing UEMGISs mostly rely on the basic GIS too much to design the actual requirements of applications and managements in themselves,and the unavailability of sufficient fundamental data has retarded their improvement.In the design of a UEMGIS,the standardization of data classification should be taken into consideration to make the data exchangeable and shareable among its subsystems and within every subsystemj,and the applicable error limits for input data should be defined in accordance with the user s required precision of data out.Data acquisition can be easy and quick if remote sensing,global positioning system(GPS)and other technologies are combined with GIS,Rapidly progressing information fechnologies have been giving a bright prospect for the melioration of UEMGIS that will have great potential and wide application in environmental conservation.

  19. Renewable Energy Assessment of Bureau of Reclamation Land and Facilities Using Geographic Information Systems

    Energy Technology Data Exchange (ETDEWEB)

    Heimiller, D.; Haase, S.; Melius, J.

    2013-05-01

    This report summarizes results of geographic information system screening for solar and wind potential at select Bureau of Reclamation lands in the western United States. The study included both utility-scale and facility-scale potential. This study supplements information in the report titled Renewable Energy Assessment for the Bureau of Reclamation: Final Report.

  20. Geographical Information Systems in Victorian Secondary Schools: Current Constraints and Opportunities

    Science.gov (United States)

    Wheeler, Peter; Gordon-Brown, Lee; Peterson, Jim; Ward, Marianne

    2010-01-01

    Whilst widespread diffusion and adoption of spatial enabling technology, such as geographic information systems (GIS), is taking place within Australian public and private sectors, the same cannot be said for GIS within Australian secondary schools and state-based geography curricula. In the Australian state of Victoria, information regarding the…

  1. A RuleML Study on Integrating Geographical and Health Information

    DEFF Research Database (Denmark)

    Gao, Sheng; Mioc, Darka; Boley, Harold;

    2008-01-01

    as an interchangeable RuleML knowledge base, consisting of facts and rules. Rules are also used for integrating geographical and health information. The implemented eHealthGeo system uses the OO jDREW reasoning engine to deduce implicit information such as spatial relationships. The system combines this with spatial...... operations and supports health information roll-up and visualization. The eHealthGeo study demonstrates a RuleML approach to supporting semantic health information integration and management....

  2. Modeling of groundwater potential of the sub-basin of Siriri river, Sergipe state, Brazil, based on Geographic Information System and Remote Sensing

    OpenAIRE

    Washington Franca Rocha; Antonio Jorge Vasconcellos Garcia; Daniela Dantas de Menezes Ribeiro

    2011-01-01

    The use of Geographic Information System (GIS) and Remote Sensing for modeling groundwater potential give support for the analysis and decision-making processes about water resource management in watersheds. The objective of this work consisted in modeling the groundwater water potential of Siriri river sub-basin, Sergipe state, based on its natural environment (soil, land use, slope, drainage density, lineament density, rainfall and geology) using Remote Sensing and Geographic Information Sy...

  3. Geographical information system (GIS) support for shoreline cleanup operations

    International Nuclear Information System (INIS)

    A GIS-based system was introduced which was capable of simplifying map production. The importance of an accurate map in shoreline cleanup operations was emphasized. Maps are used to analyze data and are also an effective communication tool, simplifying work coordination between teams. A GIS-based system allows spatial representations to be used much more extensively in integrating information. Two software products, SHORECLEAN and MAPINFO, were used to create a set of maps to be evaluated. The four main categories of tasks involved in shoreline operations were: (1) to collect data on the state of oiling, (2) to plan cleanup operations, (3) to keep track of cleanup operations, and (4) to monitor long-term changes in the state of the shoreline. It was suggested that electronic data captured directly with the portable computer on site on an oiled shoreline, helps accelerate the cleanup decision making process. 14 refs., 2 tabs., 8 figs

  4. Design and Realization of Geographic Information System for Plant Specimens

    Directory of Open Access Journals (Sweden)

    Zhenran Gao

    2016-03-01

    Full Text Available The thesis research work is based on adopting the combination of theory and technology research. For the unique characteristics of bambusoideae in yunnan province, analyses the characteristics, value and the present situation of resources of bambusoideae plant resources in yunnan province. According to the system requirements of the specimen of bambusoideae in Yunnan province, by Microsoft. Net framework platform, a collection of Web services and ASP.NET technology, based on the data of Microsoft SQL Server2008 and ADO.NET technology support, selecting desktop GIS Arc GIS platform (Arc GIS Desktop and server (Arc GIS Server as a system of GIS secondary development of GIS, and using developed tools of Microsoft Visual Studio 2010 Visual, Finally, the information system of plant specimen which based on GIS integration development of bambusoideae is finished .

  5. [Design and implementation of Geographical Information System on prevention and control of cholera].

    Science.gov (United States)

    Li, Xiu-jun; Fang, Li-qun; Wang, Duo-chun; Wang, Lu-xi; Li, Ya-pin; Li, Yan-li; Yang, Hong; Kan, Biao; Cao, Wu-chun

    2012-04-01

    To build the Geographical Information System (GIS) database for prevention and control of cholera programs as well as using management analysis and function demonstration to show the spatial attribute of cholera. Data from case reporting system regarding diarrhoea, vibrio cholerae, serotypes of vibrio cholerae at the surveillance spots and seafoods, as well as surveillance data on ambient environment and climate were collected. All the data were imported to system database to show the incidence of vibrio cholerae in different provinces, regions and counties to support the spatial analysis through the spatial analysis of GIS. The epidemic trends of cholera, seasonal characteristics of the cholera and the variation of the vibrio cholerae with times were better understood. Information on hotspots, regions and time of epidemics was collected, and helpful in providing risk prediction on the incidence of vibrio cholerae. The exploitation of the software can predict and simulate the spatio-temporal risks, so as to provide guidance for the prevention and control of the disease.

  6. 城市地理空间信息标准体系的探讨——基于乌鲁木齐市地理空间信息标准体系建设的思考%Urban Geographic Space Information Standard System Discuss——Based on the urumqi geographic space information standard system construction of thinking

    Institute of Scientific and Technical Information of China (English)

    龙海奎; 张超; 梁承东; 曾庆友

    2011-01-01

    Geographic space information standard system is the geographical information sharing platform construction foundation,through to the international and domestic and industrial geographic space information standard analysis research,combining the urumqi geographic space information material,puts forward the urumqi geographic space information standard system technical ideas.%地理空间信息标准体系是地理信息共享平台建设的基础,通过对国际、国内及行业地理空间信息标准的分析研究,结合乌鲁木齐市地理空间信息资料,提出了乌鲁木齐市地理空间信息标准体系技术思路。

  7. Geographic Information System Tools for Conservation Planning: User's Manual

    Science.gov (United States)

    Fox, Timothy J.; Rohweder, Jason J.; Kenow, K.P.; Korschgen, C.E.; DeHaan, H.C.

    2003-01-01

    Public and private land managers desire better ways to incorporate landscape, species, and habitat relations into their conservation planning processes. We present three tools, developed for the Environmental Systems Research Institute?s ArcView 3.x platform, applicable to many types of wildlife conservation management and planning efforts. These tools provide managers and planners with the ability to rapidly assess landscape attributes and link these attributes with species-habitat information. To use the tools, the user provides a detailed land cover spatial database and develops a matrix to identify species-habitat relations for the landscape of interest. The tools are applicable to any taxa or suite of taxa for which the required data are available. The user also has the ability to interactively make polygon-specific changes to the landscape and re-examine species-habitat relations. The development of these tools has given resource managers the means to evaluate the merits of proposed landscape management scenarios and to choose the scenario that best fits the goals of the managed area.

  8. Key Techniques for Dynamic Updating of National Fundamental Geographic Information Database

    Directory of Open Access Journals (Sweden)

    WANG Donghua

    2015-07-01

    Full Text Available One of the most important missions of fundamental surveying and mapping work is to keep the fundamental geographic information fresh. In this respect, National Administration of Surveying, Mapping and Geoinformation has launched the project of dynamic updating of national fundamental geographic information database since 2012, which aims to update 1:50 000, 1:250 000 and 1:1 000 000 national fundamental geographic information database continuously and quickly, by updating and publishing once a year. This paper introduces the general technical thinking of dynamic updating, states main technical methods, such as dynamic updating of fundamental database, linkage updating of derived databases, and multi-tense database management and service and so on, and finally introduces main technical characteristics and engineering applications.

  9. Development of a flexible higher education curriculum framework for geographic information science

    Science.gov (United States)

    Veenendaal, B.

    2014-04-01

    A wide range of geographic information science (GIScience) educational programs currently exist, the oldest now over 25 years. Offerings vary from those specifically focussed on geographic information science, to those that utilise geographic information systems in various applications and disciplines. Over the past two decades, there have been a number of initiatives to design curricula for GIScience, including the NCGIA Core Curriculum, GIS&T Body of Knowledge and the Geospatial Technology Competency Model developments. The rapid developments in geospatial technology, applications and organisations means that curricula need to constantly be updated and developed to maintain currency and relevance. This paper reviews the curriculum initiatives and outlines a new and flexible GIScience higher education curriculum framework which complements and utilises existing curricula. This new framework was applied to the GIScience programs at Curtin University in Perth, Australia which has surpassed 25 years of GIScience education. Some of the results of applying this framework are outlined and discussed.

  10. Technology Integration around the Geographic Information: A State of the Art

    CERN Document Server

    Ponce-Medellin, Rafael; Vargas, Rocio; Ruiz, Lirio

    2009-01-01

    One of the elements that have popularized and facilitated the use of geographical information on a variety of computational applications has been the use of Web maps; this has opened new research challenges on different subjects, from locating places and people, the study of social behavior or the analyzing of the hidden structures of the terms used in a natural language query used for locating a place. However, the use of geographic information under technological features is not new, instead it has been part of a development and technological integration process. This paper presents a state of the art review about the application of geographic information under different approaches: its use on location based services, the collaborative user participation on it, its contextual-awareness, its use in the Semantic Web and the challenges of its use in natural languge queries. Finally, a prototype that integrates most of these areas is presented.

  11. Technology Integration around the Geographic Information: A State of the Art

    Directory of Open Access Journals (Sweden)

    Rocio Vargas

    2009-10-01

    Full Text Available One of the elements that have popularized and facilitated the use of geographical information on a variety of computational applications has been the use of Web maps; this has opened new research challenges on different subjects, from locating places and people, the study of social behavior or the analyzing of the hidden structures of the terms used in a natural language query used for locating a place. However, the use of geographic information under technological features is not new, instead it has been part of a development and technological integration process. This paper presents a state of the art review about the application of geographic information under different approaches: its use on location based services, the collaborative user participation on it, its contextual-awareness, its use in the Semantic Web and the challenges of its use in natural language queries. Finally, a prototype that integrates most of these areas is presented.

  12. Design and implementation of geographic information systems, remote sensing, and global positioning system-based information platform for locust control

    Science.gov (United States)

    Li, Lin; Zhu, Dehai; Ye, Sijing; Yao, Xiaochuang; Li, Jun; Zhang, Nan; Han, Yueqi; Zhang, Long

    2014-01-01

    To monitor and control locusts efficiently, an information platform for locust control based on the global positioning system (GPS), remote sensing (RS), and geographic information systems (GIS) was developed. The platform can provide accurate information about locust occurrence and control strategies for a specific geographic place. The platform consists of three systems based on modern pest control: field ecology (locust occurrence) and GIS in a mobile GPS pad, a processing system for locust information based on GIS and RS, and a WebGIS-based real-time monitoring and controlling system. This platform was run at different geographical locations for three years and facilitated locust control in China with high efficiency and great accuracy.

  13. Geographic Names

    Data.gov (United States)

    Minnesota Department of Natural Resources — The Geographic Names Information System (GNIS), developed by the United States Geological Survey in cooperation with the U.S. Board of Geographic Names, provides...

  14. A Novel Visual Data Mining Module for the Geographical Information System gvSIG

    Directory of Open Access Journals (Sweden)

    Romel Vázquez-Rodríguez

    2013-01-01

    Full Text Available The exploration of large GIS models containing spatio-temporal information is a challenge. In this paper we propose the integration of scientific visualization (ScVis techniques into geographic information systems (GIS as an alternative for the visual analysis of data. Providing GIS with such tools improves the analysis and understanding of datasets with very low spatial density and allows to find correlations between variables in time and space. In this regard, we present a new visual data mining tool for the GIS gvSIG. This tool has been implemented as a gvSIG module and contains several ScVis techniques for multiparameter data with a wide range of possibilities to explore interactively the data. The developed module is a powerful visual data mining and data visualization tool to obtain knowledge from multiple datasets in time and space. A real case study with meteorological data from Villa Clara province (Cuba is presented, where the implemented visualization techniques were used to analyze the available datasets. Although it is tested with meteorological data, the developed module is of general application in the sense that it can be used in multiple application fields related with Earth Sciences.

  15. The use of geographical information system (GIS) technology in surface mine reclamation monitoring

    International Nuclear Information System (INIS)

    The use of a Geographic Information System (GIS) and related technologies (e.g., Digital cartographic tools, satellite image processing systems) can benefit the planning and monitoring of open-pit mine reclamation activities. PCI Geomatics, in conjunction with Luscar Limited's Line Creek Mine, has developed a GIS-based system designed to store information relevant to planning and assessing reclamation progress. Data that existed in various formats throughout the company, and which had been collected since the mine-planning phase, was integrated into the GIS. The system is used to summarize current reclamation activities and is linked to corporate costing procedures. Monitoring of reclamation activities and quantifying change in the mine area is easily done using the spatial analysis capabilities of the GIS. Assessments of the change in reclamation areas are enhanced by using satellite image data to produce inexpensive and timely information on the land base, and allow the comparison of the health of the vegetation to reclamation areas from year to year. The implemented system substantially reduces the time needed to generate statistics and produce maps for government or internal reports. Also, there are benefits in terms of both cost and effectiveness of reclamation planning

  16. Practical applications of geographical information systems in tsetse and trypanosomiasis control

    International Nuclear Information System (INIS)

    Three aspects of geographical information systems (GISs) in tsetse and trypanosomiasis control are addressed. First is their use in planning and managing control operations, second is the use of appropriate data management systems to capture data from the field and process them in a format that facilitates their geographical analysis, and third is the use of GISs to predict some of the data layers required for planning tsetse and trypanosomiasis control activities. In planning and managing trypanosomiasis interventions, GISs are applied at a range of levels. At the policy level, it can be used to integrate data such as tsetse and trypanosomiasis distributions, livestock densities and percentage cultivation to assist in allocating resources to tsetse and trypanosomiasis control. At the management level, it can be used to combine the same sorts of data in decision support models to help prioritize areas for control. At the operational level, it can be used to help plan, manage and monitor field operations. Much of the data required for these applications come directly from the field, particularly the distributions of livestock, vector and disease. The use of bespoke software such as the disease and vector integrated database (DAVID) greatly facilitates entry, display and analysis of field data, and their integration with other data within GISs. Collecting field data relevant to planning and managing tsetse and trypanosomiasis control operations is often very expensive and time consuming, therefore preventing exhaustive ground coverage. The use of GISs to combine environmental predictor variables, using multivariate statistical models, and to predict the distribution and abundance of tsetse, trypanosomiasis, cultivation and livestock is reviewed. Finally, opportunities are discussed for developing these applications in the future. It is recommended that stronger links be forged between the research workers and those in operational programmes. (author)

  17. Development of component geographic information systems applying in forest resources management

    Institute of Scientific and Technical Information of China (English)

    QI Hong; YU Su-fang; FAN Wen-yi

    2005-01-01

    The history, current situation, and development trend of GIS (Geographic Information System) applied in the forest resources management were discussed in this paper. On the basis of geographic spatial characteristics of forest resources data, a component geographic information system (ComGIS) was developed for forest resources management. The system embeds a GIS ActiveX control MapObjects (Inc. ESRI) on Visual C++ platform. System design, data organization and achieving way were studied and expatiated by taking Xigangzi Forestry Centre as study object. The system has many useful functions,, such as adding and display of various map layers, zoom of map by wheeling mouse, attribute and spatial data querying, map auto roaming, features rendering based on the spatial trait of data, label controlling through attribute data band with vector graph, as well as output of 'Column chart' for showing the result of statistics. At the same time, parts of source codes are attached.

  18. Using a Geographical Information System to investigate the relationship between reported cryptosporidiosis and water supply

    Directory of Open Access Journals (Sweden)

    Lake Iain

    2004-07-01

    Full Text Available Abstract Background This paper reports on a study investigating the epidemiology of sporadic cryptosporidiosis in the North West of England and Wales using a Geographical Information System (GIS to map location of residence of cases. Some 747 reports of cases were made to CDSC North West of which 649 reports were suitable for analysis. Cases were plotted on the maps of water supply zone and water quality area boundaries, provided by the two main water utilities. Results It was notable that there were major spatial variations in attack rate across the North West and Wales. The most dramatic example was the large difference between the Greater Manchester conurbation with many reports and Liverpool with none. Given the distribution of previously detected waterborne outbreaks in the region it was initially thought that drinking water source may be an explanation. However, an analysis of the distribution of cases in the Greater Manchester area showed no correlation with any of five water supplies that serve the conurbation. Conclusions Our study has shown a dramatic variation in the incidence of laboratory confirmed cryptosporidiosis within two regions of the United Kingdom. Further analysis has not been able to prove drinking water as a likely explanation of this variation which so far remains unexplained.

  19. Modelling social vulnerability in sub-Saharan West Africa using a geographical information system

    Directory of Open Access Journals (Sweden)

    Olanrewaju Lawal

    2015-02-01

    Full Text Available In recent times, disasters and risk management have gained significant attention, especially with increasing awareness of the risks and increasing impact of natural and other hazards especially in the developing world. Vulnerability, the potential for loss of life or property from disaster, has biophysical or social dimensions. Social vulnerability relates to societal attributes which has negative impacts on disaster outcomes. This study sought to develop a spatially explicit index of social vulnerability, thus addressing the dearth of research in this area in sub-Saharan Africa. Nineteen variables were identified covering various aspects. Descriptive analysis of these variables revealed high heterogeneity across the South West region of Nigeria for both the state and the local government areas (LGAs. Feature identification using correlation analysis identified six important variables. Factor analysis identified two dimensions, namely accessibility and socioeconomic conditions, from this subset. A social vulnerability index (SoVI showed that Ondo and Ekiti have more vulnerable LGAs than other states in the region. About 50% of the LGAs in Osun and Ogun have a relatively low social vulnerability. Distribution of the SoVI shows that there are great differences within states as well as across regions. Scores of population density, disability and poverty have a high margin of error in relation to mean state scores. The study showed that with a geographical information system there are opportunities to model social vulnerability and monitor its evolution and dynamics across the continent.

  20. Study of Spontaneous Geographic Information Collection Platform%自发地理信息采集平台研究

    Institute of Scientific and Technical Information of China (English)

    翟华; 彭佳红

    2016-01-01

    According to the characteristics of long development cycle and inefifcient of traditional manual plotting data acquisition mode, put forward the creation of geographic information, maintenance and application can be completed by the public. Based on the construction of spontaneous geographic information acquisition platform, developed the data acquisition based on mobile and the information label and report management system based on WEB terminal, achieve the function of multi user online labeling, attribute data intelligent address matching and generate spatial data, online examination and approval reported data, analysis and statistics, and other functions, for fast discovery, change of geographical information under the condition of information label, transfer and integration, to achieve the rapid update, maintenance and management of geographic information.%针对传统的手工标绘数据采集模式存在周期长、效率低等特点,提出地理信息的创建、维护和应用可以由大众完成。通过构建自发地理信息采集平台,开发基于移动端的数据采集和WEB端的信息标报管理系统,实现多用户在线标注、属性数据智能地址匹配生成空间数据、在线审批上报数据、分析与统计等功能,用于信息化条件下地理信息变化的快速发现、标注、传递与整合,实现地理信息快速更新维护和管理。

  1. National Carbon Sequestration Database and Geographic Information System (NatCarb)

    Energy Technology Data Exchange (ETDEWEB)

    Kenneth Nelson; Timothy Carr

    2009-03-31

    This annual and final report describes the results of the multi-year project entitled 'NATional CARBon Sequestration Database and Geographic Information System (NatCarb)' (http://www.natcarb.org). The original project assembled a consortium of five states (Indiana, Illinois, Kansas, Kentucky and Ohio) in the midcontinent of the United States (MIDCARB) to construct an online distributed Relational Database Management System (RDBMS) and Geographic Information System (GIS) covering aspects of carbon dioxide (CO{sub 2}) geologic sequestration. The NatCarb system built on the technology developed in the initial MIDCARB effort. The NatCarb project linked the GIS information of the Regional Carbon Sequestration Partnerships (RCSPs) into a coordinated regional database system consisting of datasets useful to industry, regulators and the public. The project includes access to national databases and GIS layers maintained by the NatCarb group (e.g., brine geochemistry) and publicly accessible servers (e.g., USGS, and Geography Network) into a single system where data are maintained and enhanced at the local level, but are accessed and assembled through a single Web portal to facilitate query, assembly, analysis and display. This project improves the flow of data across servers and increases the amount and quality of available digital data. The purpose of NatCarb is to provide a national view of the carbon capture and storage potential in the U.S. and Canada. The digital spatial database allows users to estimate the amount of CO{sub 2} emitted by sources (such as power plants, refineries and other fossil-fuel-consuming industries) in relation to geologic formations that can provide safe, secure storage sites over long periods of time. The NatCarb project worked to provide all stakeholders with improved online tools for the display and analysis of CO{sub 2} carbon capture and storage data through a single website portal (http://www.natcarb.org/). While the external

  2. Multispectral, hyperspectral, and LiDAR remote sensing and geographic information fusion for improved earthquake response

    Science.gov (United States)

    Kruse, F. A.; Kim, A. M.; Runyon, S. C.; Carlisle, Sarah C.; Clasen, C. C.; Esterline, C. H.; Jalobeanu, A.; Metcalf, J. P.; Basgall, P. L.; Trask, D. M.; Olsen, R. C.

    2014-06-01

    The Naval Postgraduate School (NPS) Remote Sensing Center (RSC) and research partners have completed a remote sensing pilot project in support of California post-earthquake-event emergency response. The project goals were to dovetail emergency management requirements with remote sensing capabilities to develop prototype map products for improved earthquake response. NPS coordinated with emergency management services and first responders to compile information about essential elements of information (EEI) requirements. A wide variety of remote sensing datasets including multispectral imagery (MSI), hyperspectral imagery (HSI), and LiDAR were assembled by NPS for the purpose of building imagery baseline data; and to demonstrate the use of remote sensing to derive ground surface information for use in planning, conducting, and monitoring post-earthquake emergency response. Worldview-2 data were converted to reflectance, orthorectified, and mosaicked for most of Monterey County; CA. Airborne Visible/Infrared Imaging Spectrometer (AVIRIS) data acquired at two spatial resolutions were atmospherically corrected and analyzed in conjunction with the MSI data. LiDAR data at point densities from 1.4 pts/m2 to over 40 points/ m2 were analyzed to determine digital surface models. The multimodal data were then used to develop change detection approaches and products and other supporting information. Analysis results from these data along with other geographic information were used to identify and generate multi-tiered products tied to the level of post-event communications infrastructure (internet access + cell, cell only, no internet/cell). Technology transfer of these capabilities to local and state emergency response organizations gives emergency responders new tools in support of post-disaster operational scenarios.

  3. The effects of the Health Insurance Portability and Accountability Act privacy rule on influenza research using geographical information systems

    Directory of Open Access Journals (Sweden)

    Norisse Tellman

    2010-11-01

    Full Text Available The Health Insurance Portability and Accountability Act (HIPAA privacy rule was enacted to protect patients’ personal health information from undue disclosure. Despite its intention to protect patients, recent reports suggest that HIPAA restrictions may be negatively impacting health research. Quantitative, visual geographical and statistical analysis of zip code geographical information systems (GIS mapping, comparing 3-digit HIPAA-compliant and 5-digit HIPAA-non-compliant simulated data, was chosen to identify and describe the type of distortion that may result. It was found that unmitigated HIPAA compliance with HIPAA mapping rules distorted the GIS zip code data by 28% leading to erroneous results. Thus, compliance with HIPAA privacy rule when mapping may lead investigators to publish erroneous GIS maps.

  4. OGC Geographic Information Service Deductive Semantic Reasoning Based on Description Vocabularies Reduction

    Directory of Open Access Journals (Sweden)

    MIAO Lizhi

    2015-09-01

    Full Text Available As geographic information interoperability and sharing developing, more and more interoperable OGC (open geospatial consortium Web services (OWS are generated and published through the internet. These services can facilitate the integration of different scientific applications by searching, finding, and utilizing the large number of scientific data and Web services. However, these services are widely dispersed and hard to be found and utilized with executive semantic retrieval. This is especially true when considering the weak semantic description of geographic information service data. Focusing on semantic retrieval and reasoning of the distributed OWS resources, a deductive and semantic reasoning method is proposed to describe and search relevant OWS resources. Specifically, ①description words are extracted from OWS metadata file to generate GISe ontology-database and instance-database based on geographic ontology according to basic geographic elements category, ②a description words reduction model is put forward to implement knowledge reduction on GISe instance-database based on rough set theory and generate optimized instances database, ③utilizing GISe ontology-database and optimized instance-database to implement semantic inference and reasoning of geographic searching objects is used as an example to demonstrate the efficiency, feasibility and recall ration of the proposed description-word-based reduction model.

  5. Modifications of the binary space partitioning tree for geographic information systems

    NARCIS (Netherlands)

    Oosterom, P.J.M. van

    1989-01-01

    We present a Reactive Data Structure, that is, a spatial data structure with detail levels. The two properties, spatial organization and detail levels, are the basis for a Geographic Information System with a multi-scale database. A reactive data structure is a novel type of data structure catering

  6. Integrating Geographic Information Systems in Business School Curriculum: An Initial Example

    Science.gov (United States)

    King, Michael A.; Arnette, Andrew N.

    2011-01-01

    Geographic information systems have experienced rapid growth and user adoption over the last four decades, due to an increasing value to the business community. However, business schools are not teaching geospatial concepts and the related location intelligence to their students. This curriculum decision seems completely at odds with business'…

  7. A Curriculum Framework for Geographical Information Science (GISc) Training at South African Universities

    Science.gov (United States)

    du Plessis, H.; van Niekerk, A.

    2012-01-01

    Geographical information science (GISc) is one of the fastest growing industries worldwide. Being a relatively new discipline, universities often provide training as part of geography, surveying, town planning, environmental and computer science programmes. This complicates professional accreditation assessments as the content, outcomes, extent…

  8. An Evaluation of Geographic Information Systems in Social Studies Lessons: Teachers' Views

    Science.gov (United States)

    Aladag, Elif

    2014-01-01

    The aim of this study is to evaluate the applicability of Geographic Information Systems (GIS), used increasingly in primary and secondary education across the world, in social studies lessons in Turkey. In line with this aim, 14 social studies teachers working in the province of Aydin, Turkey received a 6-hour training course about GIS during the…

  9. Integrating Geographic Information Systems (GIS) into Secondary Education: A Community-Based Learning Experience.

    Science.gov (United States)

    Northon, Cherie

    Teaching secondary students the basics of Geographic Information Systems (GIS) results in a variety of benefits. Conventional secondary educational programs are enhanced, and high school students are provided an opportunity to experience a rapidly expanding field as they plan for college and their professional future. For such projects, stipends…

  10. Student Perspectives on the Teaching of Geographical Information Systems (GIS) in Geography Degrees

    Science.gov (United States)

    Seremet, Mehmet; Chalkley, Brian

    2015-01-01

    In an era when graduate employability is a key concern, the teaching of geographical information systems (GIS) has become a subject of considerable interest. This paper reports on a study of the GIS student learning experience using student survey data from six UK geography undergraduate programmes. The findings show that although students'…

  11. Geographical Information Systems (GIS) Mapping of Environmental Samples across College Campuses

    Science.gov (United States)

    Purvis-Roberts, Kathleen L.; Moeur, Harriet P.; Zanella, Andrew

    2007-01-01

    In this laboratory experiment, students take environmental samples at various locations around the college campuses, take geospatial coordinates with a global position systems (GPS) unit, and map their results on a geo-referenced campus map with geographical information systems (GIS) software. Nitrogen dioxide air pollution sampling is used as an…

  12. Teaching Geographical Information Systems in Geography Degrees: A Critical Reassessment of Vocationalism

    Science.gov (United States)

    Whyatt, Duncan; Clark, Gordon; Davies, Gemma

    2011-01-01

    Geographical information systems (GIS) are in tune with the current ethos of higher education because of their perceived vocational value. However, it is particularly difficult to teach GIS vocationally. This paper critiques the claim of vocationalism. The authors use an innovative method of evaluating a module that enlists its alumni to reflect…

  13. An Activity-Based Learning Approach for Key Geographical Information Systems (GIS) Concepts

    Science.gov (United States)

    Srivastava, Sanjeev Kumar; Tait, Cynthia

    2012-01-01

    This study presents the effect of active learning methods of concepts in geographical information systems where students participated in a series of interlocked learning experiences. These activities spanned several teaching weeks and involved the creation of a hand drawn map that was scanned and geo-referenced with locations' coordinates derived…

  14. An Assessment of the Use of Geographical Information Systems (GIS) in Teaching Geography in Singapore Schools

    Science.gov (United States)

    Yap, Lee Yong; Tan, Geok Chin Ivy; Zhu, Xuan; Wettasinghe, Marissa C.

    2008-01-01

    In 1998, geographical information systems (GIS) were introduced to secondary schools in Singapore as a tool for teaching geography at the secondary and junior college levels. However, general observations and feedback from school teachers suggested that only a small number of secondary schools and junior colleges in Singapore were actually using…

  15. GIS in Evaluation: Utilizing the Power of Geographic Information Systems to Represent Evaluation Data

    Science.gov (United States)

    Azzam, Tarek; Robinson, David

    2013-01-01

    This article provides an introduction to geographic information systems (GIS) and how the technology can be used to enhance evaluation practice. As a tool, GIS enables evaluators to incorporate contextual features (such as accessibility of program sites or community health needs) into evaluation designs and highlights the interactions between…

  16. 77 FR 69899 - Public Conference on Geographic Information Systems (GIS) in Transportation Safety

    Science.gov (United States)

    2012-11-21

    ... SAFETY BOARD Public Conference on Geographic Information Systems (GIS) in Transportation Safety The... Systems (GIS) in transportation safety on December 4-5, 2012. GIS is a rapidly expanding group of... meeting will bring researchers and practitioners in transportation safety and GIS together to discuss...

  17. Technology Use in Rwandan Secondary Schools: An Assessment of Teachers' Attitudes towards Geographic Information Systems (GIS)

    Science.gov (United States)

    Akinyemi, Felicia O.

    2016-01-01

    Technology use is evident in all spheres of human endeavour. Focusing on technology use in education, this paper examines teachers' attitudes towards geographic information system (GIS). An assessment was made of GIS teachers in Rwandan secondary schools. Key areas covered include how GIS is implemented in schools, teachers' attitudes and…

  18. Gulf-Wide Information System, Louisiana Highways, Geographic NAD83, LDWF (2001) [esi_primaryroads_LDWF_2001

    Data.gov (United States)

    Louisiana Geographic Information Center — This dataset represents the state maintained primary and secondary road network of Louisiana. The dataset includes Interstates, US highways, and Louisiana State...

  19. Gulf-Wide Information System, Environmental Sensitivity Index Shorebird Database, Geographic NAD83, LDWF (2001) [esi_shorebird_LDWF_2001

    Data.gov (United States)

    Louisiana Geographic Information Center — This data set contains sensitive biological resource data for shorebird species in coastal Louisiana. Vector polygons represent concentration areas and "hotspots"...

  20. Gulf-Wide Information System, Environmental Sensitivity Index Marsh, Geographic NAD83, LDWF (2001) [esi_fresh_marsh_LDWF_2001

    Data.gov (United States)

    Louisiana Geographic Information Center — This data set contains Environmental Sensitivity Index (ESI) fresh marsh data of coastal Louisiana. The ESI is a classification and ranking system, which...

  1. Gulf-Wide Information System, Environmental Sensitivity Index Swamps, Geographic NAD83, LDWF (2001) [esi_swamp_LDWF_2001

    Data.gov (United States)

    Louisiana Geographic Information Center — This data set contains Environmental Sensitivity Index (ESI) swamps data of coastal Louisiana. The ESI is a classification and ranking system, which characterizes...

  2. Gulf-Wide Information System, Environmental Sensitivity Index Alligator Database, Geographic NAD83, LDWF (2001) [esi_gator_LDWF_2001

    Data.gov (United States)

    Louisiana Geographic Information Center — This data set contains sensitive biological resource data for American alligator in coastal Louisiana. Vector polygons represent alligator habitats with nest...

  3. Gulf-Wide Information System, Environmental Sensitivity Index Salinity, Geographic NAD83, LDWF (2001) [esi_salinity_LDWF_2001

    Data.gov (United States)

    Louisiana Geographic Information Center — This data set contains Environmental Sensitivity Index (ESI) salinity data of coastal Louisiana. The ESI is a classification and ranking system, which characterizes...

  4. Gulf-Wide Information System, Environmental Sensitivity Index Waterfowl Database, Geographic NAD83, LDWF (2001) [esi_waterfowl_LDWF_2001

    Data.gov (United States)

    Louisiana Geographic Information Center — This data set contains sensitive biological resource data for waterfowl species in coastal Louisiana. Vector polygons in this data represent waterfowl habitats with...

  5. Gulf-Wide Information System, Environmental Sensitivity Index Bear Database, Geographic NAD83, LDWF (2001) [esi_bear_LDWF_2001

    Data.gov (United States)

    Louisiana Geographic Information Center — This data set contains sensitive biological resource data for the Louisiana black bear in coastal Louisiana. Vector polygons represent occupied habitat for this...

  6. Gulf-Wide Information System, Environmental Sensitivity Index Seagrass, Geographic NAD83, LDWF (2001) [esi_seagrass_LDWF_2001

    Data.gov (United States)

    Louisiana Geographic Information Center — This data set contains Environmental Sensitivity Index (ESI) seagrass data of coastal Louisiana. The ESI is a classification and ranking system, which characterizes...

  7. Gulf-Wide Information System, Environmental Sensitivity Index Crawfish Database, Geographic NAD83, LDWF (2001) [esi_crawfish_LDWF_2001

    Data.gov (United States)

    Louisiana Geographic Information Center — This data set contains sensitive biological resource data representing major concentration areas for harvested or potentially harvested crawfish and river shrimp in...

  8. Gulf-Wide Information System, Environmental Sensitivity Index Habitats Database, Geographic NAD83, LDWF (2001) [esi_habitats_LDWF_2001

    Data.gov (United States)

    Louisiana Geographic Information Center — This data set contains sensitive biological resource data for coastal habitats in Louisiana. Vector polygons represent various habitats, including marsh types,...

  9. Gulf-Wide Information System, Environmental Sensitivity Index Polygons, Geographic NAD83, LDWF (2001) [esip_LDWF_2001

    Data.gov (United States)

    Louisiana Geographic Information Center — This data set contains polygons representing the Environmental Sensitivity Index (ESI) classification of coastal Louisiana. The ESI is a classification and ranking...

  10. Methodology based on Geographic Information Systems for biomass logistics and transport optimisation

    Energy Technology Data Exchange (ETDEWEB)

    Perpina, C.; Alfonso, D.; Perez-Navarro, A.; Penalvo, E.; Vargas, C.; Cardenas, R. [Instituto de Ingenieria Energetica, Universidad Politecnica de Valencia, Camino de Vera s/n Edificio 8E, 2a, 46022 Valencia (Spain)

    2009-03-15

    The aim of this study is to contribute by outlining a procedure for achieving an optimal use of agricultural and forest residue biomass. In this regard, it develops and applies a methodology focused on logistics and transport strategies that can be used to locate a network of bioenergy plants around the region. This methodology was developed using a Geographic Information Systems and it provides information on the spatial distribution of biomass residues. This is accomplished by taking into consideration the amount of residue left within a rectangle with an area of 1 km{sup 2}, and making a regular grid overlap for the region under consideration. The centroid of each square will be evaluated and classified as 'origin' (source of biomass collection) or 'destination' (potential location of the bioenergy plant) depending on technical, economic, environmental and social constraints. The study focuses on mapping potential sites for tapping biomass energy and optimal locations for bioenergy plants. To identify and map optimal locations it is necessary to evaluate the time, distance and transport costs involved in the road transportation of biomass by means of a network analysis. The methodology was applied in the Valencian Community because the intense agricultural, agro-alimentary and timber activity in the region means there is a high potential for biomass. (author)

  11. Scaling of Geographic Space from the Perspective of City and Field Blocks and Using Volunteered Geographic Information

    OpenAIRE

    Bin, Jiang; Xintao, Liu

    2010-01-01

    Scaling of geographic space refers to the fact that for a large geographic area its small constituents or units are much more common than the large ones. This paper develops a novel perspective to the scaling of geographic space using large street networks involving both cities and countryside. Given a street network of an entire country, we decompose the street network into individual blocks, each of which forms a minimum ring or cycle such as city blocks and field blocks. The block sizes de...

  12. Chaining of web services and its application in geographic information integration and visualization

    Science.gov (United States)

    Chen, Chuanbin; Wu, Qunyong; Chen, Chongcheng; Chen, Han

    2005-11-01

    The rapid development of web services technology ushers Geographical Information Systems (GISs) into the era of geographic information web services (GIWS), which requires a scalable and extensible GISs model to deliver distributed geographic information and GISs functions integrated as independently-provided, interoperable services in a distributed computing environment. Several distributed services can be dynamically chained as a new service to accomplish a specific task. Such a model of service chaining is one of the most important research topics of next generation GISs. The paper highlights the issues of service chaining, the process of combining several distributed, interoperable GIWS dynamically to construct customized applications, and analyses characters of each pattern. Then, based on pattern of client-coordinated chaining, we design a service chaining which is developed in a J2EE development environment using web services technology, and construct a web services-oriented Geo-spatial data integration and visualization platform in order to integrate multi-sources and heterogeneous Geo-spatial data using Geography Markup Language (GML) and Geo-spatial data integration technology, and to visualize geographic information using Scalable Vector Graphics (SVG) and JavaScript technology. During the process of design, several GIWS are defined, and functions, interfaces and related methods of these services are discussed in detail. The paper focuses on the method for chaining distributed GIWS, the mechanism for geographic information dissemination and error handling. Finally, forest Geo-spatial Data which have two typical types of data E00 and Shapefile (SHP) was used to test the platform. The result indicates that using service chaining for multi-sources and heterogeneous Geo-spatial data integration and visualization can efficiently meet customized needs, but further research is needed for better application.

  13. Rapid direct analysis to discriminate geographic origin of extra virgin olive oils by flash gas chromatography electronic nose and chemometrics.

    Science.gov (United States)

    Melucci, Dora; Bendini, Alessandra; Tesini, Federica; Barbieri, Sara; Zappi, Alessandro; Vichi, Stefania; Conte, Lanfranco; Gallina Toschi, Tullia

    2016-08-01

    At present, the geographical origin of extra virgin olive oils can be ensured by documented traceability, although chemical analysis may add information that is useful for possible confirmation. This preliminary study investigated the effectiveness of flash gas chromatography electronic nose and multivariate data analysis to perform rapid screening of commercial extra virgin olive oils characterized by a different geographical origin declared in the label. A comparison with solid phase micro extraction coupled to gas chromatography mass spectrometry was also performed. The new method is suitable to verify the geographic origin of extra virgin olive oils based on principal components analysis and discriminant analysis applied to the volatile profile of the headspace as a fingerprint. The selected variables were suitable in discriminating between "100% Italian" and "non-100% Italian" oils. Partial least squares discriminant analysis also allowed prediction of the degree of membership of unknown samples to the classes examined. PMID:26988501

  14. Application of Geographic Information Systems (GIS) in Analysing Rainfall Distribution Patterns in Batu Pahat District

    Science.gov (United States)

    Kadir, A. A.; Kaamin, M.; Azizan, N. S.; Sahat, S.; Bukari, S. M.; Mokhtar, M.; Ngadiman, N.; Hamid, N. B.

    2016-07-01

    Rainfall forecasting reports are crucial to provide information and warnings to the population in a particular location. The Malaysian Meteorology Department (MMD) is a department that plays an important role in monitoring the situation and issued the statement of changes in weather and provides services such as weather advisories and gives warnings when the situation requires. Uncertain weather situations normally have created panic situation, especially in big cities because of flash floods due to poor drainage management. Usually, local authorities provided rainfall data in tables, and it is difficult to analyse to acquire the rainfall trend. Therefore, Geographic Information System (GIS) applications are commonly used to generate rainfall patterns in visual formation with a combination of characteristics of rainfall data and then can be used by stakeholders to facilitate the process of analysis and forecasting rainfall. The objective of this study is to determine the pattern of rainfall distribution using GIS applications in Batu Pahat district to assist interested parties to understand and easy to analyse the rainfall data in visual form or mapping form. Rainfall data for a period of 10 years (2004-2013) and monthly data (Dec 2006 - Feb 2007) are provided by the Department of Irrigation and Drainage (DID) for 12 stations in the district of Batu Pahat, and rainfall maps in each year was obtained using the interpolation Inverse Distance Weighted (IDW) method was used in this research. The rainfall map was then analyzed to identify the highest rainfall that was received during the period of study. For the conclusion, this study has proved that rainfall analysis using GIS application is efficient to be used in gaining information of rainfall patterns as the results show that the highest rainfall occurred in 2006 and 2007, and it were the years of major floods occurrence in Batu Pahat district.

  15. Research policy and review 29: The Chorley Committee and "Handling Geographic Information"

    OpenAIRE

    D W Rhind; H M Mounsey

    1989-01-01

    In 1985, the UK government set up a Committee of Enquiry into the Handling of Geographic Information by computer. This was chaired by Lord Chorley and reported in early 1987. It concerned itself with all information which is described in relation to space and which could hence be used either singly or in combination. The tasks undertaken by the Committee are described, as are its composition and method of operation, the major 'discoveries' it made, and the recommendations put forward to gover...

  16. HIRENASD analysis Information Package

    Data.gov (United States)

    National Aeronautics and Space Administration — Updated November 2, 2011 Contains summary information and analysis condition details for the Aeroelastic Prediction Workshop Information plotted in this package is...

  17. Landslide hazard and risk assessment for Ambon city using landslide inventory and geographic information system

    Science.gov (United States)

    Souisa, Matheus; Hendrajaya, Lilik; Handayani, Gunawan

    2016-08-01

    Ambon Island is a volcanic islands arc and included in the territory of the archipelago of small islands are associated with subduction zones that have a degree of high vulnerability to natural disasters, such as erosion and landslides on the slopes of certain conditions. Landslides that occur various in the city of Ambon, usually occurs during the rainy season so that the impacts that occur not only occurs on site but also off site with amount of large sedimentation. This paper presents the application of digital image analysis techniques and tools Geographic Information Systems to describe the degree of landslide hazard and risk areas in locations Ambon City, Moluccas. The cause of the landslide is analyzed through various thematic layers attribute data for the study area. Landslide hazard zonation assessment is done by using historical data, while the landslide risk analysis is done by using the results of landslide hazard assessment and socioeconomic factors by using geospatial models. The risk assessment of landslides can be used to estimate the risk to the population, property and infrastructure. The study results in the form of a map of landslide hazard and the risk of landslides that act to support urban spatial planning based on disaster mitigation.

  18. Sources of endocrine-disrupting compounds in North Carolina waterways: a geographic information systems approach

    Science.gov (United States)

    Sackett, Dana K.; Pow, Crystal Lee; Rubino, Matthew; Aday, D.D.; Cope, W. Gregory; Kullman, Seth W.; Rice, J.A.; Kwak, Thomas J.; Law, L.M.

    2015-01-01

    The presence of endocrine-disrupting compounds (EDCs), particularly estrogenic compounds, in the environment has drawn public attention across the globe, yet a clear understanding of the extent and distribution of estrogenic EDCs in surface waters and their relationship to potential sources is lacking. The objective of the present study was to identify and examine the potential input of estrogenic EDC sources in North Carolina water bodies using a geographic information system (GIS) mapping and analysis approach. Existing data from state and federal agencies were used to create point and nonpoint source maps depicting the cumulative contribution of potential sources of estrogenic EDCs to North Carolina surface waters. Water was collected from 33 sites (12 associated with potential point sources, 12 associated with potential nonpoint sources, and 9 reference), to validate the predictive results of the GIS analysis. Estrogenicity (measured as 17β-estradiol equivalence) ranged from 0.06 ng/L to 56.9 ng/L. However, the majority of sites (88%) had water 17β-estradiol concentrations below 1 ng/L. Sites associated with point and nonpoint sources had significantly higher 17β-estradiol levels than reference sites. The results suggested that water 17β-estradiol was reflective of GIS predictions, confirming the relevance of landscape-level influences on water quality and validating the GIS approach to characterize such relationships.

  19. Applications of Geographical Information Systems in Understanding Spatial Distribution of Asthma

    Directory of Open Access Journals (Sweden)

    Mohammad A. Rob

    2003-01-01

    Full Text Available Geographical Information Systems (GIS are becoming useful tools in making strategic decisions when-ever data are found to have spatial distribution. Federal, state, and local governments are using GIS for assessment and planning in such areas as housing, healthcare, land use, natural resources, environmental monitoring and transportation. Companies are also using it to expand and consolidate existing businesses, perform market analysis, and to find optimum delivery routes. In this paper, we illustrate the usefulness of GIS in the analysis and presentation of spatially distributed asthma prevalence among school children (13-17 years in the New York City area. To the best of our knowledge, this is the first presentation of asthma survey results distributed over the zip codes of a large city. Preliminary results show good correlation between asthma and poverty. They also correlate well with the spatial distribution of asthma hospitalization data. Results reveal an overall asthma prevalence of ~ 16% as compared to the national average of ~12% for a similar age group (5-17 years. When comparing asthma rates among the predominant racial groups of the city - Blacks and Hispanics are found to have a higher prevalence than Whites or Asians. The inner-city population shows a significantly higher asthma prevalence than those in the suburbs. This study shows our understanding of asthma prevalence in a dimension that could not have been possible prior to the availability of GIS. The results will help us making further decisions in planning for asthma research.

  20. Comparisons of GNSS and leveling-derived orthometric heights using geographic information system software

    Science.gov (United States)

    Kelly, K. M.; Satalich, J.

    2012-12-01

    We make comparisons between GNSS- and leveling-derived orthometric heights along a 31-km long leveling line of NAVD 88 benchmarks located on the Palos Verdes Peninsula, southern California. Our study makes comparisons using both the GEOID09 and GEOID12 models and note improvements using the newer model. The Palos Verdes Peninsula is located 40 km southeast of downtown Los Angeles. Geodetic leveling observations span 16 years over three epochs: 1978, 1989, and 1994. GNSS observations span 20 years over five epochs: 1992, 1994, 1997, 2011, and 2012. Comparisons between GNSS-derived and leveled orthometric heights indicate a systematic trend reaching a maximum of about +8 cm along the western flank of the Palos Verdes Peninsula. The greatest improvements between the GEOID09 and GEOID12 models are shown on the southern portion of the peninsula between San Pedro and Point Vicente. Based upon new-minus-old comparisons of the GNSS and leveling observations, these differences cannot be attributed to either leveling or GNSS errors. We examine whether these differences may be attributable to steep gravity gradients in this region of the Peninsula. Our analysis of these results makes use of commercial-off-the-shelf (COTS) geographic information system (GIS) software. The analysis takes into account subsidence and rebound effects due to fluid extraction (petroleum and water), water injection, landslide prone areas, and faulting.

  1. Assessment of Geographic Space Arrangement Based on the Amount of Information Contained In the Map Image

    Science.gov (United States)

    Eckes, Konrad

    2014-12-01

    In this paper an attempt was made to determine whether the amount of information, necessary to record a unit area of the geographic space, mapped on the large-scale map, may define the state of the arrangement of this space. The aim of this study was to make a comprehensive assessment of the geographical space in terms of its reasonable development. Intuition suggests that for two areas with similar functions - a picture of orderly and reasonably developed land and a disordered and chaotically developed land - one can record more concisely the image of the first than the latter. The work is an attempt to formulate an indicator that could characterize a state of the general arrangement of the geographical space and could serve as an objective assessment of such arrangement. The proposed statement was put to practical verification. At the introduction the numerical amount of information was specified, necessary to record unit area of large-scale cadastral maps, containing only the boundaries of the ownership. In the task the concept of the amount of information proposed by C. E. Shannon was used. For a typical map at scale 1:1000, to record the area of one square decimetre (i. e. one hectare in the terrain) 531 bits of information are necessary. For the area of fragmented fields of southeast Poland this number increased to 4980 bits. Basing on previous work of the author, quoted for comparison, the amount of information, necessary to record the identical unit of a typical city in the same coding method, is 23360 bits of information. In this case extensive infrastructure of the city recorded on the source layers has to be included. Later in the article, the amount of information necessary to record the same unit area of geographical space for the state of extreme disorder (chaos) and the state of the theoretical ideal arrangement was determined. The real determined values were much closer to the ideal in the ordered state than to the chaos. Subsequently, the amount of

  2. Enhancing stakeholder involvement in environmental decision making: Active Response Geographic Information System

    Energy Technology Data Exchange (ETDEWEB)

    Faber, B.G.; Thomas, V.L. [CIESIN, Fort Collins, CO (United States); Thomas, M.R.; Olsenholler, J.A. [CIESIN, University Center, MI (United States)

    1997-08-01

    This paper describes a spatial decision support system that facilitates land-related negotiations and resolving conflicts. This system, called Active Response Geographic Information System (AR/GIS), uses a geographic information system to examine land resource management issues which involve multiple stakeholder groups. In this process, participants are given the opportunity and tools needed to share ideas in a facilitated land resource allocation negotiation session. Participants are able to assess current land status, develop objectives, propose alternative planning scenarios, and evaluate the effects or impacts of each alternative. AR/GIS is a unique tool that puts geographic information directly at the fingertips of non-technical policy analysts, decision makers, and representatives of stakeholder groups during the negotiation process. AR/GIS enhances individual comprehension and ownership of the decision making process and increasing the efficiency and effectiveness of group debate. It is most beneficial to planning tasks which are inherently geographic in nature, which require consideration of a large number of physical constraints and economic implications, and which involve publicly sensitive tradeoffs.

  3. Cyber-Physical Geographical Information Service-Enabled Control of Diverse In-Situ Sensors

    Directory of Open Access Journals (Sweden)

    Nengcheng Chen

    2015-01-01

    Full Text Available Realization of open online control of diverse in-situ sensors is a challenge. This paper proposes a Cyber-Physical Geographical Information Service-enabled method for control of diverse in-situ sensors, based on location-based instant sensing of sensors, which provides closed-loop feedbacks. The method adopts the concepts and technologies of newly developed cyber-physical systems (CPSs to combine control with sensing, communication, and computation, takes advantage of geographical information service such as services provided by the Tianditu which is a basic geographic information service platform in China and Sensor Web services to establish geo-sensor applications, and builds well-designed human-machine interfaces (HMIs to support online and open interactions between human beings and physical sensors through cyberspace. The method was tested with experiments carried out in two geographically distributed scientific experimental fields, Baoxie Sensor Web Experimental Field in Wuhan city and Yemaomian Landslide Monitoring Station in Three Gorges, with three typical sensors chosen as representatives using the prototype system Geospatial Sensor Web Common Service Platform. The results show that the proposed method is an open, online, closed-loop means of control.

  4. Cyber-physical geographical information service-enabled control of diverse in-situ sensors.

    Science.gov (United States)

    Chen, Nengcheng; Xiao, Changjiang; Pu, Fangling; Wang, Xiaolei; Wang, Chao; Wang, Zhili; Gong, Jianya

    2015-01-23

    Realization of open online control of diverse in-situ sensors is a challenge. This paper proposes a Cyber-Physical Geographical Information Service-enabled method for control of diverse in-situ sensors, based on location-based instant sensing of sensors, which provides closed-loop feedbacks. The method adopts the concepts and technologies of newly developed cyber-physical systems (CPSs) to combine control with sensing, communication, and computation, takes advantage of geographical information service such as services provided by the Tianditu which is a basic geographic information service platform in China and Sensor Web services to establish geo-sensor applications, and builds well-designed human-machine interfaces (HMIs) to support online and open interactions between human beings and physical sensors through cyberspace. The method was tested with experiments carried out in two geographically distributed scientific experimental fields, Baoxie Sensor Web Experimental Field in Wuhan city and Yemaomian Landslide Monitoring Station in Three Gorges, with three typical sensors chosen as representatives using the prototype system Geospatial Sensor Web Common Service Platform. The results show that the proposed method is an open, online, closed-loop means of control.

  5. Using a Geographic Information System to Assess Site Suitability for Managed Aquifer Recharge using Stormwater Capture

    Science.gov (United States)

    Teo, E. K.; Harmon, R. E.; Beganskas, S.; Young, K. S.; Fisher, A. T.; Weir, W. B.; Lozano, S.

    2015-12-01

    We are completing a regional analysis of Santa Cruz and northern Monterey Counties, CA, to assess the conditions amenable to managed aquifer recharge using stormwater runoff. Communities and water supply agencies across CA are struggling to mitigate the ongoing drought and to develop secure and sustainable water supplies to support long-term municipal, agricultural, environmental and other needs. Enhanced storage of groundwater is an important part of this effort in many basins. This work is especially timely because of the recently enacted "Sustainable Groundwater Management Act" (SGMA), which requires the development of groundwater sustainability agencies and implementation of basin management plans in coming decades. Our analysis focuses specifically on the distributed collection of stormwater runoff, a water source that has typically been treated as a nuisance or waste, from drainages having an area on the order of 40-160 hectares. The first part of this project is a geographic information system (GIS) analysis using surface and subsurface data sets. Developing complete and accurate datasets across the study region required considerable effort to locate, assemble, co-register, patch, and reconcile information from many sources and scales. We have complete spatial coverage for surface data, but subsurface data is more limited in lateral extent. Sites that are most suitable for distributed stormwater capture supporting MAR have high soil infiltration capacity, are well-connected to an underlying aquifer with good transmissive and storage properties, and have space to receive MAR. Additional considerations include method of infiltration, slope, and land use and access. Based on initial consideration of surface data and slope, 7% of the complete study region appears to be "suitable or highly suitable" for MAR (in the top third of the rating system), but there is considerable spatial heterogeneity based on the distribution of shallow soils and bedrock geology.

  6. A Geographic Information System Framework for the Management of Sensor Deployments

    Science.gov (United States)

    Russomanno, David J.; Tritenko, Yury

    2010-01-01

    A prototype Geographic Information System (GIS) framework has been developed to map, manage, and monitor sensors with respect to other geographic features, including land base and in-plant features. The GIS framework supports geographic placement and subsequent discovery, query, and tasking of sensors in a network-centric environment using Web services. The framework couples the GIS feature placement logic of sensors with an extensible ontology which captures the capabilities, properties, protocols, integrity constraints, and other parameters of interest for a large variety of sensor types. The approach is significant in that custom, GIS-based interfaces can be rapidly developed via the integration of sensors and sensor networks into applications without having detailed knowledge of the sensors’ underlying device drivers by leveraging service-oriented computing infrastructure within the GIS framework. PMID:22399881

  7. A validation of ground ambulance pre-hospital times modeled using geographic information systems

    Directory of Open Access Journals (Sweden)

    Patel Alka B

    2012-10-01

    Full Text Available Abstract Background Evaluating geographic access to health services often requires determining the patient travel time to a specified service. For urgent care, many research studies have modeled patient pre-hospital time by ground emergency medical services (EMS using geographic information systems (GIS. The purpose of this study was to determine if the modeling assumptions proposed through prior United States (US studies are valid in a non-US context, and to use the resulting information to provide revised recommendations for modeling travel time using GIS in the absence of actual EMS trip data. Methods The study sample contained all emergency adult patient trips within the Calgary area for 2006. Each record included four components of pre-hospital time (activation, response, on-scene and transport interval. The actual activation and on-scene intervals were compared with those used in published models. The transport interval was calculated within GIS using the Network Analyst extension of Esri ArcGIS 10.0 and the response interval was derived using previously established methods. These GIS derived transport and response intervals were compared with the actual times using descriptive methods. We used the information acquired through the analysis of the EMS trip data to create an updated model that could be used to estimate travel time in the absence of actual EMS trip records. Results There were 29,765 complete EMS records for scene locations inside the city and 529 outside. The actual median on-scene intervals were longer than the average previously reported by 7–8 minutes. Actual EMS pre-hospital times across our study area were significantly higher than the estimated times modeled using GIS and the original travel time assumptions. Our updated model, although still underestimating the total pre-hospital time, more accurately represents the true pre-hospital time in our study area. Conclusions The widespread use of generalized EMS pre

  8. Nation-wide, web-based, geographic information system for the integrated surveillance and control of dengue fever in Mexico.

    Science.gov (United States)

    Hernández-Ávila, Juan Eugenio; Rodríguez, Mario-Henry; Santos-Luna, René; Sánchez-Castañeda, Veronica; Román-Pérez, Susana; Ríos-Salgado, Víctor Hugo; Salas-Sarmiento, Jesús Alberto

    2013-01-01

    Dengue fever incidence and its geographical distribution are increasing throughout the world. Quality and timely information is essential for its prevention and control. A web based, geographically enabled, dengue integral surveillance system (Dengue-GIS) was developed for the nation-wide collection, integration, analysis and reporting of geo-referenced epidemiologic, entomologic, and control interventions data. Consensus in the design and practical operation of the system was a key factor for its acceptance. Working with information systems already implemented as a starting point facilitated its acceptance by officials and operative personnel. Dengue-GIS provides the geographical detail needed to plan, asses and evaluate the impact of control activities. The system is beginning to be adopted as a knowledge base by vector control programs. It is used to generate evidence on impact and cost-effectiveness of control activities, promoting the use of information for decision making at all levels of the vector control program. Dengue-GIS has also been used as a hypothesis generator for the academic community. This GIS-based model system for dengue surveillance and the experience gathered during its development and implementation could be useful in other dengue endemic countries and extended to other infectious or chronic diseases.

  9. Nation-wide, web-based, geographic information system for the integrated surveillance and control of dengue fever in Mexico.

    Directory of Open Access Journals (Sweden)

    Juan Eugenio Hernández-Ávila

    Full Text Available Dengue fever incidence and its geographical distribution are increasing throughout the world. Quality and timely information is essential for its prevention and control. A web based, geographically enabled, dengue integral surveillance system (Dengue-GIS was developed for the nation-wide collection, integration, analysis and reporting of geo-referenced epidemiologic, entomologic, and control interventions data. Consensus in the design and practical operation of the system was a key factor for its acceptance. Working with information systems already implemented as a starting point facilitated its acceptance by officials and operative personnel. Dengue-GIS provides the geographical detail needed to plan, asses and evaluate the impact of control activities. The system is beginning to be adopted as a knowledge base by vector control programs. It is used to generate evidence on impact and cost-effectiveness of control activities, promoting the use of information for decision making at all levels of the vector control program. Dengue-GIS has also been used as a hypothesis generator for the academic community. This GIS-based model system for dengue surveillance and the experience gathered during its development and implementation could be useful in other dengue endemic countries and extended to other infectious or chronic diseases.

  10. Development of a Carbon Management Geographic Information System (GIS) for the United States

    Energy Technology Data Exchange (ETDEWEB)

    Howard Herzog; Holly Javedan

    2009-12-31

    In this project a Carbon Management Geographical Information System (GIS) for the US was developed. The GIS stored, integrated, and manipulated information relating to the components of carbon management systems. Additionally, the GIS was used to interpret and analyze the effect of developing these systems. This report documents the key deliverables from the project: (1) Carbon Management Geographical Information System (GIS) Documentation; (2) Stationary CO{sub 2} Source Database; (3) Regulatory Data for CCS in United States; (4) CO{sub 2} Capture Cost Estimation; (5) CO{sub 2} Storage Capacity Tools; (6) CO{sub 2} Injection Cost Modeling; (7) CO{sub 2} Pipeline Transport Cost Estimation; (8) CO{sub 2} Source-Sink Matching Algorithm; and (9) CO{sub 2} Pipeline Transport and Cost Model.

  11. GEOGRAPHICAL ANALYSIS OF THE COASTAL FLORA OF THE AZOV SEA

    Directory of Open Access Journals (Sweden)

    Kolomiychuk V. P.

    2012-11-01

    Full Text Available Quantitative indicators of the coastal flora of the Azov Sea are presented. Geographical features of the flora of the region have been analyzed. The major endemic complexes of the flora being investigated are described.

  12. Understanding Carbon Sequestration Options in the United States: Capabilities of a Carbon Management Geographic Information System

    Energy Technology Data Exchange (ETDEWEB)

    Dahowski, Robert T.; Dooley, James J.; Brown, Daryl R.; Mizoguchi, Akiyoshi; Shiozaki, Mai

    2001-04-03

    While one can discuss various sequestration options at a national or global level, the actual carbon management approach is highly site specific. In response to the need for a better understanding of carbon management options, Battelle in collaboration with Mitsubishi Corporation, has developed a state-of-the-art Geographic Information System (GIS) focused on carbon capture and sequestration opportunities in the United States. The GIS system contains information (e.g., fuel type, location, vintage, ownership, rated capacity) on all fossil-fired generation capacity in the Untied States with a rated capacity of at least 100 MW. There are also data on other CO2 sources (i.e., natural domes, gas processing plants, etc.) and associated pipelines currently serving enhanced oil recovery (EOR) projects. Data on current and prospective CO2 EOR projects include location, operator, reservoir and oil characteristics, production, and CO2 source. The system also contains information on priority deep saline aquifers and coal bed methane basins with potential for sequestering CO2. The GIS application not only enables data storage, flexible map making, and visualization capabilities, but also facilitates the spatial analyses required to solve complex linking of CO2 sources with appropriate and cost-effective sinks. A variety of screening criteria (spatial, geophysical, and economic) can be employed to identify sources and sinks most likely amenable to deployment of carbon capture and sequestration systems. The system is easily updateable, allowing it to stay on the leading edge of capture and sequestration technology as well as the ever-changing business landscape. Our paper and presentation will describe the development of this GIS and demonstrate its uses for carbon management analysis.

  13. HiGIS: An Open Framework for High Performance Geographic Information System

    Directory of Open Access Journals (Sweden)

    XIONG, W.

    2015-08-01

    Full Text Available Big data era expose many challenges to geospatial data management, geocomputation and cartography. There is no exception in geographic information systems (GIS community. Technologies and facilities of high performance computing (HPC become more and more feasible to researchers, while mobile computing, ubiquitous computing, and cloud computing are emerging. But traditional GIS need to be improved to take advantages of all these evolutions. We proposed and implemented a GIS married with high performance computing, which is called HiGIS. The goal of HiGIS is to promote the performance of geocomputation by leveraging the power of HPC, and to build an open framework for geospatial data storing, processing, displaying and sharing. In this paper the architecture, data model and modules of the HiGIS system are introduced. A geocomputation scheduling engine based on communicating sequential process was designed to exploit spatial analysis and processing. Parallel I/O strategy using file view was proposed to improve the performance of geospatial raster data access. In order to support web-based online mapping, an interactive cartographic script was provided to represent a map. A demostration of locating house was used to manifest the characteristics of HiGIS. Parallel and concurrency performance experiments show the feasibility of this system.

  14. Geographic Information System (GIS) modeling approach to determine the fastest delivery routes.

    Science.gov (United States)

    Abousaeidi, Mohammad; Fauzi, Rosmadi; Muhamad, Rusnah

    2016-09-01

    This study involves the adoption of the Geographic Information System (GIS) modeling approach to determine the quickest routes for fresh vegetable delivery. During transport, fresh vegetables mainly deteriorate on account of temperature and delivery time. Nonetheless, little attention has been directed to transportation issues in most areas within Kuala Lumpur. In addition, perishable food normally has a short shelf life, thus timely delivery significantly affects delivery costs. Therefore, selecting efficient routes would consequently reduce the total transportation costs. The regression model is applied in this study to determine the parameters that affect route selection with respect to the fastest delivery of fresh vegetables. For the purpose of this research, ArcGIS software with network analyst extension is adopted to solve the problem of complex networks. The final output of this research is a map of quickest routes with the best delivery times based on all variables. The variables tested from regression analysis are the most effective parameters to make the flow of road networks slower. The objective is to improve the delivery services by achieving the least drive time. The main findings of this research are that Land use such as residential area and population as variables are the effective parameters on drive time.

  15. Assessment of groundwater quality using geographical information system (GIS), at north-east Cairo, Egypt.

    Science.gov (United States)

    El-Shahat, M F; Sadek, M A; Mostafa, W M; Hagagg, K H

    2016-04-01

    The present investigation has been conducted to delineate the hydrogeochemical and environmental factors that control the water quality of the groundwater resources in the north-east of Cairo. A complementary approach based on hydrogeochemistry and a geographical information system (GIS) based protectability index has been employed for conducting this work. The results from the chemical analysis revealed that the groundwater of the Quaternary aquifer is less saline than that of the Miocene aquifer and the main factors that control the groundwater salinity in the studied area are primarily related to the genesis of the original recharging water modified after by leaching, dissolution, cation exchange, and fertilizer leachate. The computed groundwater quality index (WQI) falls into two categories: fair for almost all the Miocene groundwater samples, while the Quaternary groundwater samples are all have a good quality. The retarded flow and non-replenishment of the Miocene aquifer compared to the renewable active recharge of the Quaternary aquifer can explain this variation of WQI. The index and overlay approach exemplified by the DUPIT index has been used to investigate the protectability of the study aquifers against diffuse pollutants. Three categories (highly protectable less vulnerable, moderately protectable moderately vulnerable and less protectable highly vulnerable) have been determined and areally mapped.

  16. Comparison of Volunteered Geographic Information Data Contributions and Community Development for Selected World Regions

    Directory of Open Access Journals (Sweden)

    Alexander Zipf

    2013-06-01

    Full Text Available Volunteered Geographic Information (VGI projects and their crowdsourced data have been the focus of a number of scientific analyses and investigations in recent years. Oftentimes the results show that the collaboratively collected geodata of one of the most popular VGI projects, OpenStreetMap (OSM, provides good coverage in urban areas when considering particular completeness factors. However, results can potentially vary significantly for different world regions. In this article, we conduct an analysis to determine similarities and differences in data contributions and community development in OSM between 12 selected urban areas of the world. Our findings showed significantly different results in data collection efforts and local OSM community sizes. European cities provide quantitatively larger amounts of geodata and number of contributors in OSM, resulting in a better representation of the real world in the dataset. Although the number of volunteers does not necessarily correlate with the general population density of the urban areas, similarities could be detected while comparing the percentage of different contributor groups and the number of changes they made to the OSM project. Further analyses show that socio-economic factors, such as income, can have an impact on the number of active contributors and the data provided in the analyzed areas. Furthermore, the results showed significant data contributions by members whose main territory of interest lies more than one thousand kilometers from the tested areas.

  17. ArcFVS: An integration of a Geographic Information System and Forest Vegetation Simulator

    Institute of Scientific and Technical Information of China (English)

    Bogdan; Chivoiu; Guofan; Shao; John; Moser; Walter; L.; Mills

    2006-01-01

    This paper presents the design and implementation of an integrated application program called ArcFVS that links the Forest Vegetation Simulator (FVS) and a Geographic Information System (GIS) to realize spatial selection of input files and graphic display of modeling output. Data for testing and running the model came from the U.S. Forest Service's Forest Inventory and Analysis (FIA) Database and were also collected in field surveys in north-central Indiana. ArcFVS 1.0 is designed using the ArcGIS software from the Environmental Systems Research Institute (ESRI) and the Visual Basic for Applications (VBA) programming environment to manipulate ESRI's ArcObjects. The resulting product offers custom functions as commands in a new menu or as tools on a new toolbar. They are used to: select spatially or by attribute the forest plots to be projected by FVS, create the FVS input files for the selected plots and display in a geospatial environment different types of FVS output (text output files, tables with variables of interest and visualization image files). Advantages of ArcFVS 1.0 include the new GIS capabilities, enhanced format translation functions and the standardized programming environment.

  18. Using geographical information system for spatial evaluation of canine extruded disc herniation.

    Science.gov (United States)

    Daraban, Constantin; Murino, Carla; Marzatico, Giuseppe; Mennonna, Giuseppina; Fatone, Gerardo; Auletta, Luigi; Miceli, Fabiana; Vulpe, Vasile; Meomartino, Leonardo

    2014-11-01

    Disc herniation is one of the most common pathologies of the vertebral column in dogs. The aim of this study was to develop a geographical information system (GIS)-based vertebral canal (VC) map useful for spatial evaluation of extruded disc herniation (EDH) in dogs. ArcGIS® was used to create two-dimensional and three-dimensional maps, in which the VC surface is divided into polygons by lines representing latitude and longitude. Actual locations and directions of the herniated disc material were assessed by a series of 142 computer tomographies of dogs collected between 2005 and 2013. Most EDHs were located on the cervical and transitional regions (thoraco-lumbar and lumbo-sacral) and shown at the level of the ventro- cranial and ventro-central polygons created. Choropleth maps, highlighting the distribution and the location/direction patterns of the EDHs throughout the VC, were produced based on the frequency of the ailment. GIS proved to be a valuable tool in analysing EDH in dogs. Further studies are required for biomechanical analysis of EDH patterns.

  19. Geographic Information System (GIS) modeling approach to determine the fastest delivery routes.

    Science.gov (United States)

    Abousaeidi, Mohammad; Fauzi, Rosmadi; Muhamad, Rusnah

    2016-09-01

    This study involves the adoption of the Geographic Information System (GIS) modeling approach to determine the quickest routes for fresh vegetable delivery. During transport, fresh vegetables mainly deteriorate on account of temperature and delivery time. Nonetheless, little attention has been directed to transportation issues in most areas within Kuala Lumpur. In addition, perishable food normally has a short shelf life, thus timely delivery significantly affects delivery costs. Therefore, selecting efficient routes would consequently reduce the total transportation costs. The regression model is applied in this study to determine the parameters that affect route selection with respect to the fastest delivery of fresh vegetables. For the purpose of this research, ArcGIS software with network analyst extension is adopted to solve the problem of complex networks. The final output of this research is a map of quickest routes with the best delivery times based on all variables. The variables tested from regression analysis are the most effective parameters to make the flow of road networks slower. The objective is to improve the delivery services by achieving the least drive time. The main findings of this research are that Land use such as residential area and population as variables are the effective parameters on drive time. PMID:27579003

  20. Assessment of groundwater quality using geographical information system (GIS), at north-east Cairo, Egypt.

    Science.gov (United States)

    El-Shahat, M F; Sadek, M A; Mostafa, W M; Hagagg, K H

    2016-04-01

    The present investigation has been conducted to delineate the hydrogeochemical and environmental factors that control the water quality of the groundwater resources in the north-east of Cairo. A complementary approach based on hydrogeochemistry and a geographical information system (GIS) based protectability index has been employed for conducting this work. The results from the chemical analysis revealed that the groundwater of the Quaternary aquifer is less saline than that of the Miocene aquifer and the main factors that control the groundwater salinity in the studied area are primarily related to the genesis of the original recharging water modified after by leaching, dissolution, cation exchange, and fertilizer leachate. The computed groundwater quality index (WQI) falls into two categories: fair for almost all the Miocene groundwater samples, while the Quaternary groundwater samples are all have a good quality. The retarded flow and non-replenishment of the Miocene aquifer compared to the renewable active recharge of the Quaternary aquifer can explain this variation of WQI. The index and overlay approach exemplified by the DUPIT index has been used to investigate the protectability of the study aquifers against diffuse pollutants. Three categories (highly protectable less vulnerable, moderately protectable moderately vulnerable and less protectable highly vulnerable) have been determined and areally mapped. PMID:27105417

  1. CLASSIFICATION OF FOREST ROADS AND DETERMINATION OF ROUTE USING GEOGRAPHIC INFORMATION SYSTEM

    Directory of Open Access Journals (Sweden)

    Fabrício Silva

    2016-04-01

    Full Text Available ABSTRACT Geographic Information System (GIS is an indispensable software tool in forest planning. In forestry transportation, GIS can manage the data on the road network and solve some problems in transportation, such as route planning. Therefore, the aim of this study was to determine the pattern of the road network and define transport routes using GIS technology. The present research was conducted in a forestry company in the state of Minas Gerais, Brazil. The criteria used to classify the pattern of forest roads were horizontal and vertical geometry, and pavement type. In order to determine transport routes, a data Analysis Model Network was created in ArcGIS using an Extension Network Analyst, allowing finding a route shorter in distance and faster. The results showed a predominance of horizontal geometry classes average (3 and bad (4, indicating presence of winding roads. In the case of vertical geometry criterion, the class of highly mountainous relief (4 possessed the greatest extent of roads. Regarding the type of pavement, the occurrence of secondary coating was higher (75%, followed by primary coating (20% and asphalt pavement (5%. The best route was the one that allowed the transport vehicle travel in a higher specific speed as a function of road pattern found in the study.

  2. Using geographical information system for spatial evaluation of canine extruded disc herniation

    Directory of Open Access Journals (Sweden)

    Constantin Daraban

    2014-11-01

    Full Text Available Disc herniation is one of the most common pathologies of the vertebral column in dogs. The aim of this study was to develop a geographical information system (GIS-based vertebral canal (VC map useful for spatial evaluation of extruded disc herniation (EDH in dogs. ArcGIS® was used to create two-dimensional and three-dimensional maps, in which the VC surface is divided into polygons by lines representing latitude and longitude. Actual locations and directions of the herniated disc material were assessed by a series of 142 computer tomographies of dogs collected between 2005 and 2013. Most EDHs were located on the cervical and transitional regions (thoraco-lumbar and lumbo-sacral and shown at the level of the ven- tro-cranial and ventro-central polygons created. Choropleth maps, highlighting the distribution and the location/direction patterns of the EDHs throughout the VC, were produced based on the frequency of the ailment. GIS proved to be a valuable tool in analysing EDH in dogs. Further studies are required for biomechanical analysis of EDH patterns.

  3. Geographical information system and predictive risk maps of urinary schistosomiasis in Ogun State, Nigeria

    Directory of Open Access Journals (Sweden)

    Solarin Adewale RT

    2008-05-01

    Full Text Available Abstract Background The control of urinary schistosomiasis in Ogun State, Nigeria remains inert due to lack of reliable data on the geographical distribution of the disease and the population at risk. To help in developing a control programme, delineating areas of risk, geographical information system and remotely sensed environmental images were used to developed predictive risk maps of the probability of occurrence of the disease and quantify the risk for infection in Ogun State, Nigeria. Methods Infection data used were derived from carefully validated morbidity questionnaires among primary school children in 2001–2002, in which school children were asked among other questions if they have experienced "blood in urine" or urinary schistosomiasis. The infection data from 1,092 schools together with remotely sensed environmental data such as rainfall, vegetation, temperature, soil-types, altitude and land cover were analysis using binary logistic regression models to identify environmental features that influence the spatial distribution of the disease. The final regression equations were then used in Arc View 3.2a GIS software to generate predictive risk maps of the distribution of the disease and population at risk in the state. Results Logistic regression analysis shows that the only significant environmental variable in predicting the presence and absence of urinary schistosomiasis in any area of the State was Land Surface Temperature (LST (B = 0.308, p = 0.013. While LST (B = -0.478, p = 0.035, rainfall (B = -0.006, p = 0.0005, ferric luvisols (B = 0.539, p = 0.274, dystric nitosols (B = 0.133, p = 0.769 and pellic vertisols (B = 1.386, p = 0.008 soils types were the final variables in the model for predicting the probability of an area having an infection prevalence equivalent to or more than 50%. The two predictive risk maps suggest that urinary schistosomiasis is widely distributed and occurring in all the Local Government Areas (LGAs

  4. Using a Geographic Information System to Assess the Risk of Hurricane Hazards on the Maya Civilization

    Science.gov (United States)

    Weigel, A. M.; Griffin, R.; Sever, T.

    2014-12-01

    The extent of the Maya civilization spanned across portions of modern day Mexico, Belize, Guatemala, El Salvador and Honduras. Paleoclimatic studies suggest this region has been affected by strong hurricanes for the past six thousand years, reinforced by archeological evidence from Mayan records indicating they experienced strong storms. It is theorized hurricanes aided in the collapse of the Maya, damaging building structures, agriculture, and ceasing industry activities. Today, this region is known for its active tropical climatology, being hit by numerous strong storms including Hurricane Dean, Iris, Keith, and Mitch. This research uses a geographic information system (GIS) to model hurricane hazards, and assess the risk posed on the Maya civilization. GIS has the ability to handle various layer components making it optimal for combining parameters necessary for assessing the risk of experiencing hurricane related hazards. For this analysis, high winds, storm surge flooding, non-storm surge related flooding, and rainfall triggered landslides were selected as the primary hurricane hazards. Data sets used in this analysis include the National Climatic Data Center International Best Track Archive for Climate Stewardships (IBTrACS) hurricane tracks, Shuttle Radar Topography Mission Digital Elevation Model, WorldClim monthly accumulated precipitation, USGS HydroSHEDS river locations, Harmonized World Soil Database soil types, and known Maya site locations from the Electronic Atlas of Ancient Maya Sites. ArcGIS and ENVI software were utilized to process data and model hurricane hazards. To assess locations at risk of experiencing high winds, a model was created using ArcGIS Model Builder to map each storm's temporal wind profile, and adapted to simulate forward storm velocity, and storm frequency. Modeled results were then combined with physical land characteristics, meteorological, and hydrologic data to identify areas likely affected. Certain areas along the eastern

  5. Geographic information system (GIS) representation of coal-bearing areas in India and Bangladesh

    Science.gov (United States)

    Trippi, Michael H.; Tewalt, Susan J.

    2011-01-01

    Geographic information system (GIS) information may facilitate energy studies, which in turn provide input for energy policy decisions. Prior to this study, no GIS file representing the occurrence of coal-bearing units in India or Bangladesh was known to exist. This Open-File Report contains downloadable shapefiles representing the coalfields of India and Bangladesh and a limited number of chemical and petrographic analyses of India and Bangladesh coal samples. Also included are maps of India and Bangladesh showing the locations of the coalfields and coal samples in the shapefiles, figures summarizing the stratigraphic units in the coalfields of India and Bangladesh, and a brief report summarizing the stratigraphy and geographic locations of coal-bearing deposits in India and Bangladesh.

  6. Boosting Geographic Information System’s Performance Using In-Memory Data Grid

    Directory of Open Access Journals (Sweden)

    Navin Rajpal

    2012-07-01

    Full Text Available A typical Geographic Information System(GIS is informationsystem that integrates, stores, edits, analyzes, shares anddisplays geographic information for effective decision making.The focus here is to refine the storing and retrievingcapabilities of any GIS. GIS application have a very highperformance and scalability requirement, such as queryresponse time of less than 3 seconds, 120000 customer sessionsper hour and 100000 data addition/updates per day. Also anideal GIS application always deal with high concurrent load,frequent database access for mostly read only data, and nonlineargrowth of mostly read only data over period of time.These all are the factors which lead to performance impact inthe application. This research proceeds to understand how theIn-Memory Data-Grid solution is better than other solutionsand how can it be leveraged to implement a very highperforming and highly scalable GIS applications.

  7. 增强现实地理信息系统%Augment Reality Geographical Information System

    Institute of Scientific and Technical Information of China (English)

    孙敏; 陈秀万; 张飞舟; 郑宏伟

    2004-01-01

    地理信息系统(Geographical Information System, GIS)与增强现实(Augment Reality, AR)技术的结合将推动户外AR系统的发展,同时也将为地理信息科学的发展开辟新的方向,两者结合的结果即为增强现实地理信息系统(Augment Reality Geographical Information System, ARGIS).作者提出了明确的ARGIS概念、组成结构及研究框架,并进行了详细讨论,另外就其研究背景、相关研究现状及其发展的重要性进行了阐述.

  8. Geographic Information System (GIS) characterizations of benthic community data near the Florida Panhandle, 1970-1985 (NODC Accession 0000603)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This data collection uses a Geographic Information System (GIS) to organize and characterize information about benthic communities and substrates, which are...

  9. Gulf-Wide Information System, Environmental Sensitivity Index Database, Geographic NAD83, LDWF (2001) [esi_index_LDWF_2001

    Data.gov (United States)

    Louisiana Geographic Information Center — This data set contains polygons representing the boundaries of the USGS 1:100,000 topographic maps in the study area of the Louisiana Gulf-Wide Information System...

  10. Gulf-Wide Information System, Environmental Sensitivity Index Parishes, Geographic NAD83, LDWF (2001) [esi_parish_LDWF_2001

    Data.gov (United States)

    Louisiana Geographic Information Center — This data set contains boundaries for parishes in coastal Louisiana. Feature-specific contact, type, and source information are stored in relational data tables...

  11. Gulf-Wide Information System, Environmental Sensitivity Index Managed Lands, Geographic NAD83, LDWF (2001) [esi_mgt_LDWF_2001

    Data.gov (United States)

    Louisiana Geographic Information Center — This data set contains boundaries for managed lands in coastal Louisiana. Feature-specific contact, type, and source information are stored in relational data...

  12. Gulf-Wide Information System, Environmental Sensitivity Index Cities Database, Geographic NAD83, LDWF (2001) [esi_cities_LDWF_2001

    Data.gov (United States)

    Louisiana Geographic Information Center — This data set contains boundaries for municipal areas in coastal Louisiana. Feature-specific contact, type, and source information are stored in relational data...

  13. Gulf-Wide Information System, Environmental Sensitivity Index Hydrography Database, Geographic NAD83, LDWF (2001) [esi_hydro_LDWF_2001

    Data.gov (United States)

    Louisiana Geographic Information Center — This data set contains arcs and polygons representing hydrography for coastal Louisiana. This data set comprises a portion of the Gulf-Wide Information System...

  14. Evaluation of the 3d Urban Modelling Capabilities in Geographical Information Systems

    Science.gov (United States)

    Dogru, A. O.; Seker, D. Z.

    2010-12-01

    Geographical Information System (GIS) Technology, which provides successful solutions to basic spatial problems, is currently widely used in 3 dimensional (3D) modeling of physical reality with its developing visualization tools. The modeling of large and complicated phenomenon is a challenging problem in terms of computer graphics currently in use. However, it is possible to visualize that phenomenon in 3D by using computer systems. 3D models are used in developing computer games, military training, urban planning, tourism and etc. The use of 3D models for planning and management of urban areas is very popular issue of city administrations. In this context, 3D City models are produced and used for various purposes. However the requirements of the models vary depending on the type and scope of the application. While a high level visualization, where photorealistic visualization techniques are widely used, is required for touristy and recreational purposes, an abstract visualization of the physical reality is generally sufficient for the communication of the thematic information. The visual variables, which are the principle components of cartographic visualization, such as: color, shape, pattern, orientation, size, position, and saturation are used for communicating the thematic information. These kinds of 3D city models are called as abstract models. Standardization of technologies used for 3D modeling is now available by the use of CityGML. CityGML implements several novel concepts to support interoperability, consistency and functionality. For example it supports different Levels-of-Detail (LoD), which may arise from independent data collection processes and are used for efficient visualization and efficient data analysis. In one CityGML data set, the same object may be represented in different LoD simultaneously, enabling the analysis and visualization of the same object with regard to different degrees of resolution. Furthermore, two CityGML data sets

  15. GEOGRAPHICAL INFORMATION SYSTEMS AND ECOLOGY CASE STUDY – ŢARCU MOUNTAINS (SOUTHERN CARPATHIANS

    Directory of Open Access Journals (Sweden)

    M. Török – Oance

    2003-01-01

    Full Text Available The significance of geographic information systems (GIS for environmental managment and resource planning has increased in recent years. Current ecological theory, in particular ecosystem theoy, is characteriyed by a new better understanding of ecosystem patterns and dynamics. This paper describes some of the basic application methods using GIS in connection with ecological factors constrained by relief in Ţarcu Mountains, Southern Carpathians.

  16. Mapping Zika virus infection using geographical information systems in Tolima, Colombia, 2015-2016

    OpenAIRE

    Alfonso J. Rodriguez-Morales; Maria Leonor Galindo-Marquez; Carlos Julian García-Loaiza; Juan Alejandro Sabogal-Roman; Santiago Marin-Loaiza; Andrés Felipe Ayala; Carlos O. Lozada-Riascos; Andrea Sarmiento-Ospina; Heriberto Vásquez-Serna; Jimenez-Canizales, Carlos E.; Juan Pablo Escalera-Antezana

    2016-01-01

    Objective: Geographical information systems (GIS) have been extensively used for the development of epidemiological maps of tropical diseases, however not yet specifically for Zika virus (ZIKV) infection. Methods: Surveillance case data of the ongoing epidemics of ZIKV in the Tolima department, Colombia (2015-2016) were used to estimate cumulative incidence rates (cases/100,000 pop.) to develop the first maps in the department and its municipalities, including detail for the capital, Ibagué. ...

  17. Open-Source web-based geographical information system for health exposure assessment

    Directory of Open Access Journals (Sweden)

    Evans Barry

    2012-01-01

    Full Text Available Abstract This paper presents the design and development of an open source web-based Geographical Information System allowing users to visualise, customise and interact with spatial data within their web browser. The developed application shows that by using solely Open Source software it was possible to develop a customisable web based GIS application that provides functions necessary to convey health and environmental data to experts and non-experts alike without the requirement of proprietary software.

  18. OGC Geographic Information Service Deductive Semantic Reasoning Based on Description Vocabularies Reduction

    OpenAIRE

    MIAO Lizhi; Xu, Jie; Zhou, Ya; CHENG Wenchao

    2015-01-01

    As geographic information interoperability and sharing developing, more and more interoperable OGC (open geospatial consortium) Web services (OWS) are generated and published through the internet. These services can facilitate the integration of different scientific applications by searching, finding, and utilizing the large number of scientific data and Web services. However, these services are widely dispersed and hard to be found and utilized with executive semantic retrieval. This is espe...

  19. Determination the Appropriateness of Tokat Kazova Lands to Peach Cultivation Using Geographic Information System

    OpenAIRE

    R. Gercekcioglu; T. Susam; T. Oztekin

    2008-01-01

    The aims of this study are to determine the appropriate peach orchard locations among Tokat Kazova lands and to classify the lands according to the suitability for peach cultivation by means of Geographic Information System (GIS). The distances and elevation differences of possible orchard locations to/from the available water resources, soil profile depth, soil profile texture, frost risk, land aspect, and land slope were considered as criterions to classify the lands of Tokat Kazova to dete...

  20. Use of a geographic information system (GIS) for targeting radon screening programs in South Dakota

    OpenAIRE

    Kearfott, Kimberlee J.; Whetstone, Zachary D.; Rafique Mir, Khwaja M.

    2015-01-01

    Because 222Rn is a progeny of 238U, the relative abundance of uranium may be used to predict the areas that have the potential for high indoor radon concentration and therefore determine the best areas to conduct future surveys. Geographic Information System (GIS) mapping software was used to construct maps of South Dakota that included levels of uranium concentrations in soil and stream water and uranium deposits. Maps of existing populations and the types of land were also generated. Existi...

  1. Open-Source web-based Geographical Information System for health exposure assessment.

    Science.gov (United States)

    Evans, Barry; Sabel, Clive E

    2012-01-01

    This paper presents the design and development of an open source web-based Geographical Information System allowing users to visualise, customise and interact with spatial data within their web browser. The developed application shows that by using solely Open Source software it was possible to develop a customisable web based GIS application that provides functions necessary to convey health and environmental data to experts and non-experts alike without the requirement of proprietary software.

  2. Based on asynchronous communication protocol of geographic space information service access mechanism research

    OpenAIRE

    G. Chen; Zhao, J.; Gu, M; Li, D.

    2014-01-01

    At present, the traditional way of accessing to classified network in geographic spatial information services is using network gatekeeper and firewall etc. to ensure public and classified network communications links. However, the physical isolation between classified network and public network is crossed, which is bound to cause classified network potential security hazard. In Yunnan province space Land dynamic monitoring integration project, it proposed the point to point text m...

  3. The Use of Geographic Information Systems by Corporate Real Estate Executives

    OpenAIRE

    Ron Fryrear; Ed Prill; Elaine M. Worzala

    2001-01-01

    There are many obvious applications for a Geographic Information System (GIS) within real estate but how widely this tool is used, particularly for corporate real estate, is unknown. The results from a survey focusing on how corporate real estate executives use GIS is reported. Results indicate that GIS is not used extensively nor is it likely to be adopted in the near future. Of those that use GIS, retail was the predominant industry; demographic data was analyzed and site selection was the ...

  4. Using geographic information system tools to improve access to MS specialty care in Veterans Health Administration

    OpenAIRE

    William J. Culpepper, II, PhD, MA; Diane Cowper-Ripley, PhD; Eric R. Litt, BA; Tzu-Yun McDowell, MA; Paul M. Hoffman, MD

    2010-01-01

    Access to appropriate and timely healthcare is critical to the overall health and well-being of patients with chronic diseases. In this study, we used geographic information system (GIS) tools to map Veterans Health Administration (VHA) patients with multiple sclerosis (MS) and their access to MS specialty care. We created six travel-time bands around VHA facilities with MS specialty care and calculated the number of VHA patients with MS who resided in each time band and the number of patient...

  5. Traditional anthropology and geographical information systems in the collaborative study of Cassava in Africa

    Science.gov (United States)

    Romanoff, Steven

    1991-01-01

    Cross-cultural, village-level, and farmer surveys have been used with a geographical information system to describe the distribution and relative importance of cassava (manioc, yuca, Manihot esculenta) in its cultural, economic, and ecological contexts. It presents examples of data management for mapping, sample selection, cross-tabulation of characteristics, combination of data types for indices and hypothesis testing. The methods used are reviewed, and some of the main conclusions of the study are presented.

  6. Investigating Barriers to Tuberculosis Evaluation in Uganda Using Geographic Information Systems.

    Science.gov (United States)

    Ross, Jennifer M; Cattamanchi, Adithya; Miller, Cecily R; Tatem, Andrew J; Katamba, Achilles; Haguma, Priscilla; Handley, Margaret A; Davis, J Lucian

    2015-10-01

    Reducing geographic barriers to tuberculosis (TB) care is a priority in high-burden countries where patients frequently initiate, but do not complete, the multi-day TB evaluation process. Using routine cross-sectional study from six primary-health clinics in rural Uganda from 2009 to 2012, we explored whether geographic barriers affect completion of TB evaluation among adults with unexplained chronic cough. We measured distance from home parish to health center and calculated individual travel time using a geographic information systems technique incorporating roads, land cover, and slope, and measured its association with completion of TB evaluation. In 264,511 patient encounters, 4,640 adults (1.8%) had sputum smear microscopy ordered; 2,783 (60%) completed TB evaluation. Median travel time was 68 minutes for patients with TB examination ordered compared with 60 minutes without (P < 0.010). Travel time differed between those who did and did not complete TB evaluation at only one of six clinics, whereas distance to care did not differ at any of them. Neither distance nor travel time predicted completion of TB evaluation in rural Uganda, although limited detail in road and village maps restricted full implementation of these mapping techniques. Better data are needed on geographic barriers to access clinics offering TB services to improve TB diagnosis. PMID:26217044

  7. OLYMPUS DISS - A Readily Implemented Geographic Data and Information Sharing System

    Science.gov (United States)

    Necsoiu, D. M.; Winfrey, B.; Murphy, K.; McKague, H. L.

    2002-12-01

    Electronic information technology has become a crucial component of business, government, and scientific organizations. In this technology era, many enterprises are moving away from the perception that information repositories are only a tool for decision-making. Instead, many organizations are learning that information systems, which are capable of organizing and following the interrelations between information and both the short-term and strategic organizational goals, are assets themselves, with inherent value. Olympus Data and Information Sharing System (DISS) is a system developed at the Center for Nuclear Waste Regulatory Analyses (CNWRA) to solve several difficult tasks associated with the management of geographical, geological and geophysical data. Three of the tasks were to (1) gather the large amount of heterogeneous information that has accumulated over the operational lifespan of CNWRA, (2) store the data in a central, knowledge-based, searchable database and (3) create quick, easy, convenient, and reliable access to that information. Faced with these difficult tasks CNWRA identified the requirements for designing such a system. Key design criteria were: (a) ability to ingest different data formats (i.e., raster, vector, and tabular data); (b) minimal expense using open-source and commercial off-the-shelf software; (c) seamless management of geospatial data, freeing up time for researchers to focus on analyses or algorithm development, rather than on time consuming format conversions; (d) controlled access; and (e) scalable architecture to meet new and continuing demands. Olympus DISS is a solution that can be easily adapted to small and mid-size enterprises dealing with heterogeneous geographic data. It uses established data standards, provides a flexible mechanism to build applications upon and output geographic data in multiple and clear ways. This abstract is an independent product of the CNWRA and does not necessarily reflect the views or

  8. Exploring Games and Gameplay as a Means of Accessing and Using Geographical Information

    Directory of Open Access Journals (Sweden)

    William E. Cartwright

    2006-05-01

    Full Text Available Gaming computers are now as powerful as their office/industry counterparts, or, in some cases, even more powerful. Gaming strategies and games could provide an innovative means for accessing geographical information, including geographical information accessed via the Web.This paper reports on research undertaken to ascertain the usefulness of implementing a “games” interface for accessing geographical information. Three simple prototype packages were built and subsequently tested to see if access to information via a different interface would enhance information provided to users from a selected user group profile – the “Nintendo” group of users. Ormeling (1993 has identified this group as those users who have been exposed to computer games and thus potentially prefer access to computer-delivered information via this type of interface. The use of the prototypes was compared with the use of a conventional paper map for the same area and evaluations were completed to ascertain: * The general operability of the products; * Whether users preferred other metaphor approaches to traditional map interfaces; * Whether 3D graphic interfaces are preferable to 2D interfaces; and * Whether this type of product provides a better “picture” of reality.It was found that generally users preferred interactive multimedia to using conventional maps. They found that it would be easier for users who were not competent computer users to use a game-like control, and that the cognitive load was generally easier with a 3D interface, compared to a 2D interface.Furthermore, it was possible to conclude that this type of product provided a better understanding of a real place than a conventional map.This paper provides a background to the research, information about how the research was conducted, results from the evaluations and propositions for further research.

  9. Integration of environmental simulation models with satellite remote sensing and geographic information systems technologies: case studies

    Science.gov (United States)

    Steyaert, Louis T.; Loveland, Thomas R.; Brown, Jesslyn F.; Reed, Bradley C.

    1993-01-01

    Environmental modelers are testing and evaluating a prototype land cover characteristics database for the conterminous United States developed by the EROS Data Center of the U.S. Geological Survey and the University of Nebraska Center for Advanced Land Management Information Technologies. This database was developed from multi temporal, 1-kilometer advanced very high resolution radiometer (AVHRR) data for 1990 and various ancillary data sets such as elevation, ecological regions, and selected climatic normals. Several case studies using this database were analyzed to illustrate the integration of satellite remote sensing and geographic information systems technologies with land-atmosphere interactions models at a variety of spatial and temporal scales. The case studies are representative of contemporary environmental simulation modeling at local to regional levels in global change research, land and water resource management, and environmental simulation modeling at local to regional levels in global change research, land and water resource management and environmental risk assessment. The case studies feature land surface parameterizations for atmospheric mesoscale and global climate models; biogenic-hydrocarbons emissions models; distributed parameter watershed and other hydrological models; and various ecological models such as ecosystem, dynamics, biogeochemical cycles, ecotone variability, and equilibrium vegetation models. The case studies demonstrate the important of multi temporal AVHRR data to develop to develop and maintain a flexible, near-realtime land cover characteristics database. Moreover, such a flexible database is needed to derive various vegetation classification schemes, to aggregate data for nested models, to develop remote sensing algorithms, and to provide data on dynamic landscape characteristics. The case studies illustrate how such a database supports research on spatial heterogeneity, land use, sensitivity analysis, and scaling issues

  10. Hanford Site ground-water model: Geographic information system linkages and model enhancements, FY 1993

    International Nuclear Information System (INIS)

    Models of the unconfined aquifer are important tools that are used to (1) identify and quantify existing, emerging, or potential ground-water quality problems, (2) predict changes in ground-water flow and contaminant transport as waste-water discharge operations change, and (3) assess the potential for contaminants to migrate from the US Department of Energy's Hanford Site through the ground water. Formerly, most of the numerical models developed at the Hanford Site were two-dimensional. However, contaminant concentrations cannot be accurately predicted with a two-dimensional model, which assumes a constant vertical distribution of contaminants in the aquifer. Development of two- and three-dimensional models of ground-water flow based on the Coupled Fluid, Energy, and Solute Transport (CFEST) code began in the mid- 1980s. The CFEST code was selected because of its ability to simulate both ground-water flow and contaminant transport. Physical processes that can be modeled by CFEST include aquifer geometry, heterogeneity, boundary conditions, and initial conditions. The CFEST ground-water modeling library has been integrated with the commercially available geographic information system (GIS) ARC/INFO. The display and analysis capabilities of a GIS are well suited to the size and diversity of databases being generated at the Hanford Site. The ability to visually inspect large databases through a graphical analysis tool provides a stable foundation for site assessments and ground-water modeling studies. Any ground-water flow model being used by an ongoing project should be continually updated and refined to reflect the most current knowledge of the system. The two-dimensional ground-water flow model being used in support of the Ground-Water Surveillance Project has recently been updated and enhanced. One major enhancement was the extension of the model area to include North Richland

  11. Identification of Evacuation Routes in Tacloban City using Geographic Information System

    Science.gov (United States)

    Mendoza, Jerico; Mahar Francisco Lagmay, Alfredo; Santiago, Joy; Suarez, John Kenneth

    2016-04-01

    The Philippines is the second most at risk to natural hazards according to the 2014 World Risk Report. On 8 November 2013, category 5 Typhoon Haiyan crossed the central region of the Philippines with maximum sustained wind reaching 315 kph. Considered as one of the strongest typhoons that made landfall in recorded history, Typhoon Haiyan caused USD 8 billion damage to properties, 6,293 deaths, 28,689 injured and 1,061 missing persons. Tacloban City, located in the north-eastern part of the island of Leyte in Eastern Visayas region, is one of the area most devastated by Typhoon Haiyan. The city is susceptible to other natural hazards given its geography, topography and geology. This condition emphasizes the need for preventive measures to avoid further loss of lives and destruction to properties. Evacuation is a mitigating strategy which involves the process of moving people from dangerous places to safer locations. Using Geographic Information System (GIS), a multi-hazard map of Tacloban City was created to determine safe areas for evacuation centers. The optimal route for evacuation was identified using ArcGIS Network Analyst's routing solver based on Dijkstra's algorithm. The medium of transportation used in the analysis is by foot with an average speed of 5.0 kph. Furthermore, the study assumes that all roads are passable and fully functional during the travel period and that there are no structures, trees and other debris that may act as road blockage. The study can be used as a reference in hazard assessment for disaster risk management and evacuation planning. This can be further improved by incorporating behaviour of the affected population and other socio-economic factors, different modes of transportation and detailed analysis of topography.

  12. Economic Screening of Geologic Sequestration Options in the United States with a Carbon Management Geographic Information System

    Energy Technology Data Exchange (ETDEWEB)

    Dahowski, Robert T.(BATTELLE (PACIFIC NW LAB)); Dooley, James J.(BATTELLE (PACIFIC NW LAB)); Brown, Daryl R.(BATTELLE (PACIFIC NW LAB)); Stephan, Alex J.(BATTELLE (PACIFIC NW LAB)); Badie I. Morsi

    2001-10-19

    Developing a carbon management strategy is a formidable task for nations as well as individual companies. It is often difficult to understand what options are available, let alone determine which may be optimal. In response to the need for a better understanding of complex carbon management options, Battelle has developed a state-of-the-art Geographic Information System (GIS) model with economic screening capability focused on carbon capture and geologic sequestration opportunities in the United States. This paper describes the development of this GIS-based economic screening model and demonstrates its use for carbon management analysis.

  13. A Volunteered Geographic Information Framework to Enable Bottom-Up Disaster Management Platforms

    Directory of Open Access Journals (Sweden)

    Mohammad Ebrahim Poorazizi

    2015-08-01

    Full Text Available Recent disasters, such as the 2010 Haiti earthquake, have drawn attention to the potential role of citizens as active information producers. By using location-aware devices such as smartphones to collect geographic information in the form of geo-tagged text, photos, or videos, and sharing this information through online social media, such as Twitter, citizens create Volunteered Geographic Information (VGI. To effectively use this information for disaster management, we developed a VGI framework for the discovery of VGI. This framework consists of four components: (i a VGI brokering module to provide a standard service interface to retrieve VGI from multiple resources based on spatial, temporal, and semantic parameters; (ii a VGI quality control component, which employs semantic filtering and cross-referencing techniques to evaluate VGI; (iii a VGI publisher module, which uses a service-based delivery mechanism to disseminate VGI, and (iv a VGI discovery component to locate, browse, and query metadata about available VGI datasets. In a case study we employed a FOSS (Free and Open Source Software strategy, open standards/specifications, and free/open data to show the utility of the framework. We demonstrate that the framework can facilitate data discovery for disaster management. The addition of quality metrics and a single aggregated source of relevant crisis VGI will allow users to make informed policy choices that could save lives, meet basic humanitarian needs earlier, and perhaps limit environmental and economic damage.

  14. The Scaling of Geographic Space from the Perspective of City and Field Blocks and Using Volunteered Geographic Information

    CERN Document Server

    Jiang, Bin

    2012-01-01

    The scaling of geographic space refers to the fact that for a large geographic area its small constituents or units are much more common than the large ones. This paper develops a novel perspective to the scaling of geographic space using large street networks involving both cities and countryside. Given a street network of an entire country, we decompose the street network into individual blocks, each of which forms a minimum ring or cycle such as city blocks and field blocks. The block sizes demonstrate the scaling property, i.e., there are far more small blocks than large ones. Interestingly, and to our surprise, we find that the mean of all the block sizes can easily separate between small and large blocks- a high percentage (e.g., 90%) of smaller ones and a low percentage (e.g., 10%) of larger ones. Based on this regularity, termed as the head/tail division rule, we propose a natural way of delineating city boundaries by grouping the smaller blocks. The extracted city sizes for the three largest European...

  15. Geographic name

    Directory of Open Access Journals (Sweden)

    Branimir Vukosav

    2011-12-01

    Full Text Available In the Croatian language, the word "zagora" or "zagorje" refers to an area "on the other side of a mountain or a hill". Throughout history, this term has been widely used to describe places physically detached from some other, economically or politically more prominent areas; and has thus been adopted as a geographic name (toponym for places which were "in contrast" to such areas and separated from them by an element of terrain. The term zagora is therefore a geographic name which denotes an area observed from an outside point of view, and which is later on accepted by the domicile population, becoming an endonym. In the context of the Croatian national territory, the most prominent usage of this toponym has been present in specific traditional regions in northern and southern Croatia; namely, Hrvatsko zagorje in northern Croatia, and a rather undefined area in the Dalmatian hinterland in southern Croatia. The extent and the degree of identification of the areas in southern Croatia bearing that particular geographic name have not been precisely defined, although there are many obvious indications of the existence of such a region in many contemporary sources. The aim of this paper is to research the perceptual character of an area in the Dalmatian hinterland in relation to geographic names Zagora and Dalmatinska zagora by means of content analysis. The final conclusions are drawn on the basis of informal geographic data retrieval from a chosen contemporary medium source (Slobodna Dalmacija newspaper. The observed extent of perception provides provisional maps which serve as approximations of collective cognitive maps and represents a starting point for a more extensive research on vernacular aspects of the Dalmatian hinterland.

  16. Geographical information systems and air pollution simulation for Megalopolis' electric power plant in Peloponnese, Greece.

    Science.gov (United States)

    Theophanides, Mike; Anastassopoulou, Jane; Theophanides, Theophile

    2014-01-01

    The growth and sophistication of geographic information systems (GIS) have propelled us into a new era of environmental analyses. Air pollution is a growing concern in populated areas as many recent studies have associated high levels of pollution with increased illnesses and mortality. The study will focus on the toxicity levels incurred by radioactive lignite-burning Power Generation facilities located in Megalopolis, Greece. An estimate of pollution emissions followed by dispersion simulations for various atmospheric conditions will be given. The exercise will be integrated with a Geographical Information System (GIS) for defining the emission sources and visualizing the dispersion of pollutants over the geographical terrain. Data samples were collected from vegetation in the surrounding areas and analyzed for radioactivity. High energy levels (up to 4-5 times higher than recommended standards, (UNCEAR, 1982) were found in several samples containing (226)Ra, (232)Th, (234)Th, (40)K and (238)U. The study concludes that air quality and vegetation of the neighbouring areas is adversely affected by industrial waste. Greater pollution controls and air quality monitoring should be applied for the benefit and health of its citizens. Radioactivity in food and water and inhaled air become very dangerous for public health thus, the levels of radioactivity should be kept within UNCEAR 1982 limits.

  17. Development and implementation of a low cost micro computer system for LANDSAT analysis and geographic data base applications

    Science.gov (United States)

    Faust, N.; Jordon, L.

    1981-01-01

    Since the implementation of the GRID and IMGRID computer programs for multivariate spatial analysis in the early 1970's, geographic data analysis subsequently moved from large computers to minicomputers and now to microcomputers with radical reduction in the costs associated with planning analyses. Programs designed to process LANDSAT data to be used as one element in a geographic data base were used once NIMGRID (new IMGRID), a raster oriented geographic information system, was implemented on the microcomputer. Programs for training field selection, supervised and unsupervised classification, and image enhancement were added. Enhancements to the color graphics capabilities of the microsystem allow display of three channels of LANDSAT data in color infrared format. The basic microcomputer hardware needed to perform NIMGRID and most LANDSAT analyses is listed as well as the software available for LANDSAT processing.

  18. Techniques for Representation of Regional Clusters in Geographical In-formation Systems

    Directory of Open Access Journals (Sweden)

    Adriana REVEIU

    2011-01-01

    Full Text Available This paper provides an overview of visualization techniques adapted for regional clusters presentation in Geographic Information Systems. Clusters are groups of companies and insti-tutions co-located in a specific geographic region and linked by interdependencies in providing a related group of products and services. The regional clusters can be visualized by projecting the data into two-dimensional space or using parallel coordinates. Cluster membership is usually represented by different colours or by dividing clusters into several panels of a grille display. Taking into consideration regional clusters requirements and the multilevel administrative division of the Romania’s territory, I used two cartograms: NUTS2- regions and NUTS3- counties, to illustrate the tools for regional clusters representation.

  19. Geographic Object-Based Image Analysis – Towards a new paradigm

    Science.gov (United States)

    Blaschke, Thomas; Hay, Geoffrey J.; Kelly, Maggi; Lang, Stefan; Hofmann, Peter; Addink, Elisabeth; Queiroz Feitosa, Raul; van der Meer, Freek; van der Werff, Harald; van Coillie, Frieke; Tiede, Dirk

    2014-01-01

    The amount of scientific literature on (Geographic) Object-based Image Analysis – GEOBIA has been and still is sharply increasing. These approaches to analysing imagery have antecedents in earlier research on image segmentation and use GIS-like spatial analysis within classification and feature extraction approaches. This article investigates these development and its implications and asks whether or not this is a new paradigm in remote sensing and Geographic Information Science (GIScience). We first discuss several limitations of prevailing per-pixel methods when applied to high resolution images. Then we explore the paradigm concept developed by Kuhn (1962) and discuss whether GEOBIA can be regarded as a paradigm according to this definition. We crystallize core concepts of GEOBIA, including the role of objects, of ontologies and the multiplicity of scales and we discuss how these conceptual developments support important methods in remote sensing such as change detection and accuracy assessment. The ramifications of the different theoretical foundations between the ‘per-pixel paradigm’ and GEOBIA are analysed, as are some of the challenges along this path from pixels, to objects, to geo-intelligence. Based on several paradigm indications as defined by Kuhn and based on an analysis of peer-reviewed scientific literature we conclude that GEOBIA is a new and evolving paradigm. PMID:24623958

  20. Content Analysis of International Research in Geographical and Environmental Education: 18 Years of Academic Publishing

    Science.gov (United States)

    Kidman, Gillian; Papadimitriou, Fivos

    2012-01-01

    This paper examines the history of the "International Research in Geographical and Environmental Education" (IRGEE) journal in terms of its sustainable future. The development of geographical and environmental education is evaluated, as reflected from the papers published in the journal "IRGEE". A content analysis of all papers and forum sections…

  1. Handling Spatial Relations in Logical Concept Analysis To Explore Geographical Data

    OpenAIRE

    Bedel, Olivier; Ferré, Sébastien; Ridoux, Olivier

    2008-01-01

    International audience Because of the expansion of geo-positioning tools and the democratization of geographical information, the amount of geo-localized data that is available around the world keeps increasing. So, the ability to efficiently retrieve informations in function of their geographical facet is an important issue. In addition to individual properties such as position and shape, spatial relations between objects are an important criteria for selecting and reaching objects of int...

  2. The Determinants of Geographic Concentration of Industry: A Quantitative Analysis

    OpenAIRE

    Zhu Wang; Daniel Yi Xu; Luis Cabral

    2012-01-01

    Taking the early U.S. automobile industry as an example, we evaluate two competing hypotheses on geographic concentration of industry: local externalities versus employee spinoffs. Our findings suggest that both forces contribute to industry agglomeration through their specific channels, and the spinoff effect can be viewed as a special form of local externalities. Calibrating our model to the quantitative pattern of industry evolution reveals that traditional local externalities are main dri...

  3. Using Geographic Information System to Maintenance and Upgrading Public Utility Networks Using Technology AM / FM

    Directory of Open Access Journals (Sweden)

    AUSAMA ALTADMORY

    2013-07-01

    Full Text Available Many applications using Geographic Information Systems technology exist today. From facility mapping to inventory management, from land use analysis to trash collection routing, GIS technology is enhancing the ability of government agencies to provide services to its citizenry. Public utility networks comprise the most important and infrastructure in any city, state, or country. They provide essential support for running a society on uninterrupted daily basis, in most countries. The service area of a single utility company could vary from several hundred to many thousands square miles, and may serve anywhere from a few thousand to several millions customers. With many distributed facilities remotely located, utility systems become more sophisticated to manage and maintain. Traditionally, there are three major challenges facing the utility industry: large service areas, many distributed customers, and remotely distributed aging facilities. Recent deregulation and increasing market competition also have imposed more sophisticated difficulties. Utilities are seeking new technologies to tackle these challenges, and automated mapping/facilities management integrated with emerging technologies, provides vital solutions. (AM/FM applications consist of water and wastewater, electricity, cable television, telephone, gas, telecommunication. The scope of this article is to find the best solution for managing the public utilities networks, and performing monitoring and maintenance process by combine automated maps which are useful for organizing data in layers overlay with facility management systems, which is responsible for the public utilities network management, reporting, maintenance. The combination of two systems called automated mapping/facilities management which will achieve a better improve, work-order, management, better integrating, and inventory control.

  4. Groundwater Quality Assessment Based on Geographical Information System and Groundwater Quality Index

    Directory of Open Access Journals (Sweden)

    Zahra Derakhshan

    2015-06-01

    Full Text Available Iran is located in an arid and semi-arid part of the world. Accordingly, the management of the water resources in the country is a priority. In this regard, determining the quality and pollution of surface water and groundwater is very important, especially in areas where groundwater resources are used for drinking. Groundwater quality index (GQI checks the components of the available water with various quality levels. To assess the quality of drinking groundwater of Yazd-Ardakan plain according to GQI in geographical information system (GIS environment, the electrical conductivity, sodium, calcium, magnesium, chlorine, pH, sodium adsorption ratio, bicarbonate, sulfate, potassium, water hardness, and all substances dissolved in the waters of 80 wells were determined. The samples were obtained from Yazd Regional Water Organization from 2005 to 2014. Using this data, the map components were plotted by Kriging geostatistical method. Then, the map of GQI was prepared after normalizing each map component, switching to a rating map, and extracting the weight of each component from the rating map. Based on the GQI index map, the index point which was 87 in 2005 has increased to 81 in 2014. These maps show a decline in groundwater quality from west to the east region. This decline in groundwater quality is due to the existence of Neogene Organizations in the east and geomorphologic unit of the bare epandage pediment in the west. The map removal and single-parameter sensitivity analysis showed that GQI index in Yazd-Ardakan plain is more sensitive to the components of electrical conductivity (EC, total dissolved solids (TDS, and total hardness (TH. Therefore, these components should be monitored more carefully and repeatedly.

  5. Geographic information science: Contribution to understanding salt and sodium affected soils in the Senegal River Valley

    Science.gov (United States)

    Ndiaye, Ramatoulaye

    The Senegal River valley and delta (SRVD) are affected by long term climate variability. Indicators of these climatic shifts include a rainfall deficit, warmer temperatures, sea level rise, floods, and drought. These shifts have led to environmental degradation, water deficits, and profound effects on human life and activities in the area. Geographic Information Science (GIScience), including satellite-based remote sensing methods offer several advantages over conventional ground-based methods used to map and monitor salt-affected soil (SAS) features. This study was designed to assess the accuracy of information on soil salinization extracted from Landsat satellite imagery. Would available imagery and GIScience data analysis enable an ability to discriminate natural soil salinization from soil sodication and provide an ability to characterize the SAS trend and pattern over 30 years? A set of Landsat MSS (June 1973 and September 1979), Landsat TM (November 1987, April 1994 and November 1999) and ETM+ (May 2001 and March 2003) images have been used to map and monitor salt impacted soil distribution. Supervised classification, unsupervised classification and post-classification change detection methods were used. Supervised classifications of May 2001 and March 2003 images were made in conjunction field data characterizing soil surface chemical characteristics that included exchange sodium percentage (ESP), cation exchange capacity (CEC) and the electrical conductivity (EC). With this supervised information extraction method, the distribution of three different types of SAS (saline, saline-sodic, and sodic) was mapped with an accuracy of 91.07% for 2001 image and 73.21% for 2003 image. Change detection results confirmed a decreasing trend in non-saline and saline soil and an increase in saline-sodic and sodic soil. All seven Landsat images were subjected to the unsupervised classification method which resulted in maps that separate SAS according to their degree of

  6. On the Applicability of Geographic Information Systems for Landing-Site Assessments

    Science.gov (United States)

    van Gasselt, S.

    2013-09-01

    As of 2013, a total number of 45 autonomous lander, sample-return or rover missions have been launched to the Moon, Venus, Mars, and Titan since 1960. Slightly less than 50% of these attempts were successful (see [4] and compilation in figure 1). Reports of the National Research Council (NRC) or recent surveys and roadmaps of space agencies clearly state the importance of autonomous units operating on the surface of other planets as precursors to in-depth robotic analyses and human exploration [1, 2, 3]. The selection of landing sites for autonomously operating planetary probes is a complex task, mainly because of partial gaps in the determinability of surface properties based on remote-sensing data, but also because scientific as well as engineering aspects need to be co-evaluated to provide a basis for a successful and effective mission-operation with measurable scientific output. Science criteria are always related to a set of (planet-specific) surface investigations conducted at a distinct location. Engineering constraints pick up science criteria and form an additional set of requirements within a geospatial context. This context makes it attractive to make use of established tools to geospatially analyse, define and rate locations in terms of a feasibility and safety assessment for lander or rover operations. For terrestrial applications, integration, analysis and evaluation of data from a geospatial domain are today usually conducted using highly modifiable but generic geographic information system (GIS) technology (GIST). GIS allow us to define workflow models related to geospatially defined data and to extract information from such investigations. We here want to discuss how standard demands as put forward by recent mission-planning scenarios can be evaluated using standard GIST, i.e. we want to define adaptable workflows for solving characteristic problems. As a second aim, such a procedure should provide a basis for discussion on how such systems can

  7. GEOTRANS: An interface program from GEOPROGRAM to a geographic information system

    International Nuclear Information System (INIS)

    The US Geological Survey Plotter Lab, Denver, Colorado, has created a computer program to translate data from GEOPROGRAM recording files to a geographic information system (GIS) and a relational database. The program, GEOTRANS, takes files recorded on a Kern DSR 11 Analytical Plotter and translates the coordinate information into the KORK Geographic Information System (KGIS) and places the non-coordinate information into ORACLE, a relational database program. The advantage of linking the data collection capabilities of GEOPROGRAM with KGIS and ORACLE is to offer geologists a means of merging, editing, and querying coordinate and relational databases online. GEOTRANS is written in Pascal v.3.8 running under the DEC VMS operating system on a Microvax II computer. The program is structured in such a manner as to facilitate converting and restructuring of the program to translate 3D coordinate and attribute data collected with an analytical plotter to either 3D or other 2D GIS. This report describes how files from GEOPROGRAM are read, how 2D topology is created, and how GEOTRANS procedures and various calls to libraries transform and insert data to the proper place. A user's manual is included to run GEOTRANS. 7 refs., 6 figs

  8. Impacts of Scale on Geographic Analysis of Health Data: An Example of Obesity Prevalence

    Directory of Open Access Journals (Sweden)

    Jay Lee

    2014-10-01

    Full Text Available The prevalence of obesity has increased dramatically in recent decades. It is an important public health issue as it causes many other chronic health conditions, such as hypertension, cardiovascular diseases, and type II diabetics. Obesity affects life expectancy and even the quality of lives. Eventually, it increases social costs in many ways due to increasing costs of health care and workplace absenteeism. Using the spatial patterns of obesity prevalence as an example; we show how different geographic units can reveal different degrees of detail in results of analysis. We used both census tracts and census block groups as units of geographic analysis. In addition; to reveal how different geographic scales may impact on the analytic results; we applied geographically weighted regression to model the relationships between obesity rates (dependent variable and three independent variables; including education attainment; unemployment rates; and median family income. Though not including an exhaustive list of explanatory variables; this regression model provides an example for revealing the impacts of geographic scales on analysis of health data. With obesity data based on reported heights and weights on driver’s licenses in Summit County, Ohio, we demonstrated that geographically weighted regression reveals varying spatial trends between dependent and independent variables that conventional regression models such as ordinary least squares regression cannot. Most importantly, analyses carried out with different geographic scales do show very different results. With these findings, we suggest that, while possible, smaller geographic units be used to allow better understanding of the studies phenomena.

  9. Assessing Completeness and Spatial Error of Features in Volunteered Geographic Information

    Directory of Open Access Journals (Sweden)

    Anthony Stefanidis

    2013-06-01

    Full Text Available The assessment of the quality and accuracy of Volunteered Geographic Information (VGI contributions, and by extension the ultimate utility of VGI data has fostered much debate within the geographic community. The limited research to date has been focused on VGI data of linear features and has shown that the error in the data is heterogeneously distributed. Some have argued that data produced by numerous contributors will produce a more accurate product than an individual and some research on crowd-sourced initiatives has shown that to be true, although research on VGI is more infrequent. This paper proposes a method for quantifying the completeness and accuracy of a select subset of infrastructure-associated point datasets of volunteered geographic data within a major metropolitan area using a national geospatial dataset as the reference benchmark with two datasets from volunteers used as test datasets. The results of this study illustrate the benefits of including quality control in the collection process for volunteered data.

  10. Role of satellite remote sensing in the geographic information economics in France

    Science.gov (United States)

    Denégre, Jean

    In national and international economics, geographic information plays a role which is generally acknowledged to be important but which is however, difficult to assess quantitatively, its applications being rather miscellaneous and indirect. Computer graphics and telecommunications increae that importance still more and justify many investments and research into new cartographic forms. As part of its responsibility for participating in the promotion of those developments, by taking into account needs expressed by public or private users, the National Council for Geographic Information (C.N.I.G.) has undertaken a general evaluation of the economic and social utility of geographic information in France. The study involves an estimation of the cost of production and research activities, which are probably about 0.1% of the Cross National Product—similar to many other countries. It also devised a method of estimating "cost/advantage" ratios applicable to these "intangible" benefits. Within that framework, remote sensing emphasizes particular aspects related both to the increase of economic performances in cartographic production and to the advent of new products and new ways of utilization. A review of some significant sectors shows effective earnings of about 10-20%, or even 50% or 100% of the costs, and these are doubtless much greater for the efficacy in the exploitation of products. Finally, many applications, entirely new result from extensions in various fields which would have been impossible without remote sensing: here the "cost advantage" ratio cannot even be compared with previous processes. Studies were undertaken in parallel for defining different types of products derived from satellite imagery, as well as those domains where development effort is required in order to make new advances.

  11. Remote Sensing Image Classification Applied to the First National Geographical Information Census of China

    Science.gov (United States)

    Yu, Xin; Wen, Zongyong; Zhu, Zhaorong; Xia, Qiang; Shun, Lan

    2016-06-01

    Image classification will still be a long way in the future, although it has gone almost half a century. In fact, researchers have gained many fruits in the image classification domain, but there is still a long distance between theory and practice. However, some new methods in the artificial intelligence domain will be absorbed into the image classification domain and draw on the strength of each to offset the weakness of the other, which will open up a new prospect. Usually, networks play the role of a high-level language, as is seen in Artificial Intelligence and statistics, because networks are used to build complex model from simple components. These years, Bayesian Networks, one of probabilistic networks, are a powerful data mining technique for handling uncertainty in complex domains. In this paper, we apply Tree Augmented Naive Bayesian Networks (TAN) to texture classification of High-resolution remote sensing images and put up a new method to construct the network topology structure in terms of training accuracy based on the training samples. Since 2013, China government has started the first national geographical information census project, which mainly interprets geographical information based on high-resolution remote sensing images. Therefore, this paper tries to apply Bayesian network to remote sensing image classification, in order to improve image interpretation in the first national geographical information census project. In the experiment, we choose some remote sensing images in Beijing. Experimental results demonstrate TAN outperform than Naive Bayesian Classifier (NBC) and Maximum Likelihood Classification Method (MLC) in the overall classification accuracy. In addition, the proposed method can reduce the workload of field workers and improve the work efficiency. Although it is time consuming, it will be an attractive and effective method for assisting office operation of image interpretation.

  12. Determining the Effectiveness of Incorporating Geographic Information Into Vehicle Performance Algorithms

    Energy Technology Data Exchange (ETDEWEB)

    Sera White

    2012-04-01

    This thesis presents a research study using one year of driving data obtained from plug-in hybrid electric vehicles (PHEV) located in Sacramento and San Francisco, California to determine the effectiveness of incorporating geographic information into vehicle performance algorithms. Sacramento and San Francisco were chosen because of the availability of high resolution (1/9 arc second) digital elevation data. First, I present a method for obtaining instantaneous road slope, given a latitude and longitude, and introduce its use into common driving intensity algorithms. I show that for trips characterized by >40m of net elevation change (from key on to key off), the use of instantaneous road slope significantly changes the results of driving intensity calculations. For trips exhibiting elevation loss, algorithms ignoring road slope overestimated driving intensity by as much as 211 Wh/mile, while for trips exhibiting elevation gain these algorithms underestimated driving intensity by as much as 333 Wh/mile. Second, I describe and test an algorithm that incorporates vehicle route type into computations of city and highway fuel economy. Route type was determined by intersecting trip GPS points with ESRI StreetMap road types and assigning each trip as either city or highway route type according to whichever road type comprised the largest distance traveled. The fuel economy results produced by the geographic classification were compared to the fuel economy results produced by algorithms that assign route type based on average speed or driving style. Most results were within 1 mile per gallon ({approx}3%) of one another; the largest difference was 1.4 miles per gallon for charge depleting highway trips. The methods for acquiring and using geographic data introduced in this thesis will enable other vehicle technology researchers to incorporate geographic data into their research problems.

  13. Geographical analysis of the Uredinales flora of Poland

    Directory of Open Access Journals (Sweden)

    Tomasz Majewski

    2014-11-01

    Full Text Available The analysis of the Polish flora of the order Uredinales is based on a simultaneously published descriptive elaboration (M a j e w s k i 1977, ms. The information on the Uredinales flora of Poland has been compared as far as possible with the data obtained from the analysis of the flora of sever al other countries in Europe with a different type of vegetations. In a chapter devoted to the statistics of the flora of Polish rust fungi the number of genera and species of these fungi in Poland is discussed, as well as their life cycles and host plants. The distribution of Uredinales in Poland is analysed on the basis of the A r w i d s s o n - D u r r i e u classification modified by the author, and particular attention is paid to the depedence of the range of the fungus on its life cycle and the occurrence of the host. Changes in the flora a result of its synantropization are also considered. The Polish Uredinales are divided into several groups on the basis of range, and example of their distribution involving historical factors are discussed.

  14. Forest management applications of Landsat data in a geographic information system

    Science.gov (United States)

    Maw, K. D.; Brass, J. A.

    1982-01-01

    The utility of land-cover data resulting from Landsat MSS classification can be greatly enhanced by use in combination with ancillary data. A demonstration forest management applications data base was constructed for Santa Cruz County, California, to demonstrate geographic information system applications of classified Landsat data. The data base contained detailed soils, digital terrain, land ownership, jurisdictional boundaries, fire events, and generalized land-use data, all registered to a UTM grid base. Applications models were developed from problems typical of fire management and reforestation planning.

  15. Another Look at Taurus Littrow: An Interactive Geographic Information System DataBase

    Science.gov (United States)

    Coombs, Cassandra R.; Meisburger, J. L.; Nettles, J. W.

    1998-01-01

    A variety of data has been amassed for the Apollo 17 landing site, including topography, sample locations, and imagery. These data were compiled into a Geographic Information System (GIS) to analyze their interrelationships more easily. The database will allow the evaluation of the resource potential of the Taurus Littrow region pyroclastic deposits. The database also serves as a catalog for the returned lunar samples. This catalog includes rock type, size, and location. While this project specifically targets the Taurus Littrow region, it is applicable to other regions as well.

  16. An Overview of Landslide Forecasting Using Wireless Sensor Network and Geographical Information System

    Directory of Open Access Journals (Sweden)

    Anitha K

    2016-04-01

    Full Text Available Landslides are natural disasters cause losses in many human lives and damage properties every year around the globe. Using of physical and electronic monitoring makes possible in prediction and prevention losses from landslide. Today, the wireless sensor network technology has been developed rapidly for landslide predictions. The primary object of this present paper is to overview the landslide prediction method using wireless sensor networks (WSN and geographical information systems (GIS. The paper focuses on various landslide conditioning factors, WSN design requirement, and small scale down slope model similar to study area (hazard location. Landslide prediction database to support warning system are also discussed

  17. On the relevance of Gibson's affordance concept for geographical information science (GISc).

    Science.gov (United States)

    Jonietz, David; Timpf, Sabine

    2015-09-01

    J. J. Gibson's concept of affordances has provided a theoretical basis for various studies in geographical information science (GISc). This paper sets out to explain its popularity from a GISc perspective. Based on a short review of previous work, it will be argued that its main contributions to GISc are twofold, including an action-centered view of spatial entities and the notion of agent-environment mutuality. Using the practical example of pedestrian behavior simulation, new potentials for using and extending affordances are discussed.

  18. A Geographic Information System approach to modeling nutrient and sediment transport

    International Nuclear Information System (INIS)

    The objective of this study was to develop a water quality model to quantify nonpoint-source (NPS) pollution that uses a geographic information system (GIS) to link statistical modeling of nutrient and sediment delivery with the spatial arrangement of the parameters that drive the model. The model predicts annual nutrient and sediment loading and was developed, calibrated, and tested on 12 watersheds within the Lake Ray Roberts drainage basin in north Texas. Three physiographic regions are represented by these watersheds, and model success, as measured by the accuracy of load estimates, was compared within and across these regions

  19. Web Accessibility Evaluation of Massive Open Online Courses on Geographical Information Systems

    OpenAIRE

    Calle Jiménez, Tania; Sánchez Gordón, Sandra; Luján Mora, Sergio

    2014-01-01

    This paper describes some of the challenges that exist to make accessible massive open online courses (MOOCs) on Geographical Information Systems (GIS). These courses are known by the generic name of Geo-MOOCs. A MOOC is an online course that is open to the general public for free, which causes a massive registration. A GIS is a computer application that acquire, manipulate, manage, model and visualize geo-referenced data. The goal of a Geo-MOOC is to expand the culture of spatial thinking an...

  20. A Geographic Information System approach to modeling nutrient and sediment transport

    Energy Technology Data Exchange (ETDEWEB)

    Levine, D.A. [Automated Sciences Group, Inc., Oak Ridge, TN (United States); Hunsaker, C.T.; Beauchamp, J.J. [Oak Ridge National Lab., TN (United States); Timmins, S.P. [Analysas Corp., Oak Ridge, TN (United States)

    1993-02-01

    The objective of this study was to develop a water quality model to quantify nonpoint-source (NPS) pollution that uses a geographic information system (GIS) to link statistical modeling of nutrient and sediment delivery with the spatial arrangement of the parameters that drive the model. The model predicts annual nutrient and sediment loading and was developed, calibrated, and tested on 12 watersheds within the Lake Ray Roberts drainage basin in north Texas. Three physiographic regions are represented by these watersheds, and model success, as measured by the accuracy of load estimates, was compared within and across these regions.

  1. The application of geographic information system to radiological and nuclear emergency monitoring

    International Nuclear Information System (INIS)

    The Geographic Information System (GIS) implementation for the preparation and response in case of to radiological and nuclear emergencies is being developed in the Emergency Control Center of the Argentina Nuclear Regulatory Authority, since many years ago. Additionals features have been incorporated such as integration with the results of radiological monitoring, improving and expanding its benefits both in the preparation stage and during the work of emergency response. This paper shows the specific application of GIS to radiological monitoring in case of emergency situations such as during the search of orphan sources and the characterization of geographic context around nuclear power plants and atomic centers. The GIS provides essential data cartographic for the monitoring with sophisticated detectors, to integrate with the information received with infrastructure, urban and rural population maps, physical features of the place, satellite images, etc. The monitoring results are analyzed and compared with relevant information for decision making during the response, like evacuation routes, affected population, security forces in the area, radiological characterization, application of protective actions, hospitals, schools, etc. These two integrated tools improve preparedness and response system in case of radiological or nuclear emergency. (authors)

  2. The Geographic Climate Information System Project (GEOCLIMA): Overview and preliminary results

    Science.gov (United States)

    Feidas, H.; Zanis, P.; Melas, D.; Vaitis, M.; Anadranistakis, E.; Symeonidis, P.; Pantelopoulos, S.

    2012-04-01

    The project GEOCLIMA aims at developing an integrated Geographic Information System (GIS) allowing the user to manage, analyze and visualize the information which is directly or indirectly related to climate and its future projections in Greece. The main components of the project are: a) collection and homogenization of climate and environmental related information, b) estimation of future climate change based on existing regional climate model (RCM) simulations as well as a supplementary high resolution (10 km x 10 km) simulation over the period 1961-2100 using RegCM3, c) compilation of an integrated uniform geographic database, and d) mapping of climate data, creation of digital thematic maps, and development of the integrated web GIS application. This paper provides an overview of the ongoing research efforts and preliminary results of the project. First, the trends in the annual and seasonal time series of precipitation and air temperature observations for all available stations in Greece are assessed. Then the set-up of the high resolution RCM simulation (10 km x 10 km) is discussed with respect to the selected convective scheme. Finally, the relationship of climatic variables with geophysical features over Greece such as altitude, location, distance from the sea, slope, aspect, distance from climatic barriers, land cover etc) is investigated, to support climate mapping. The research has been co-financed by the European Union (European Regional Development Fund) and Greek national funds through the Operational Program "Competitiveness and Entrepreneurship" of the National Strategic Reference Framework (NSRF) - Research Funding Program COOPERATION 2009.

  3. Geographic information system data from ambulances applied in the emergency department: effects on patient reception

    DEFF Research Database (Denmark)

    Raaber, Nikolaj; Pedersen, Iben Duvald; Riddervold, Ingunn Skogstad;

    2016-01-01

    BACKGROUND: Emergency departments (ED) recognize crowding and handover from prehospital to in-hospital settings to be major challenges. Prehospital Geographical Information Systems (GIS) may be a promising tool to address such issues. In this study, the use of prehospital GIS data was implemented...... was displayed in the ED. Data included real-time estimated time of arrival, distance to ED, dispatch criteria, patient data and ambulance contact information. Data was used by coordinating nurses for time activation of TT and MET involved in the initial treatment of severely-injured or critically-ill patients....... DISCUSSION: The contradiction of measured median wait time and nurses perceived improved timing of team activation may result from having both RT- ETA and supplemental patient information not only for seriously-injured or critically-ill patients received by the TT and MET, but for all patients transported...

  4. Gulf-Wide Information System, Environmental Sensitivity Index Survey Boundaries, Geographic NAD83, LDWF (2001) [esi_survey_LDWF_2001

    Data.gov (United States)

    Louisiana Geographic Information Center — This data set contains vector polygons representing survey boundaries for the various data collection efforts used as sources in the larger Louisiana G-WIS...

  5. The use of information systems to transform utilities and regulatory commissions: The application of geographic information systems

    Energy Technology Data Exchange (ETDEWEB)

    Wirick, D.W.; Montgomery, G.E.; Wagman, D.C.; Spiers, J.

    1995-09-01

    One technology that can assist utilities remain financially viable in competitive markets and help utilities and regulators to better serve the public is information technology. Because geography is an important part of an electric, natural gas, telecommunications, or water utility, computer-based Geographic Information Systems (GIS) and related Automated Mapping/Facilities Management systems are emerging as core technologies for managing an ever-expanding variety of formerly manual or paper-based tasks. This report focuses on GIS as an example of the types of information systems that can be used by utilities and regulatory commissions. Chapter 2 provides general information about information systems and effects of information on organizations; Chapter 3 explores the conversion of an organization to an information-based one; Chapters 4 and 5 set out GIS as an example of the use of information technologies to transform the operations of utilities and commissions; Chapter 6 describes the use of GIS and other information systems for organizational reengineering efforts; and Chapter 7 examines the regulatory treatment of information systems.

  6. Management of Information and Infrastructure of Indigenous Community at Royal Belum State Park Using Geographical Information System: A Conceptual Design

    Directory of Open Access Journals (Sweden)

    Othman Zainon

    2015-07-01

    Full Text Available Abstract. Nowadays, an integrated location, descriptive inventory data and geographical information are required for a better decision making in Indigenous community management activities. The management system can improve productivity and to save time, money and man power. Conventional maps and Indigenous inventories on papers or spread sheet are lack of meeting these requirements which are not static and subjected to change rapidly. The Geographic Information Systems (GIS and Database Management (DBM System are capabilities and confined in manipulation of location and descriptive data, respectively. A GIS system is chosen in Management Information and Infrastructure of Indigenous Communities because its meets all the requirements that can help the authorities to managed the community. GIS able to manipulate location and descriptive data as well as the relationships between them are dynamic. This paper will discussed briefly the conceptual design of GIS activities and Indigenous community in Royal Belum State Park, Malaysia, then terminology and theoretical concepts of GIS, Indigenous community management and the link between them are reviewed.Keywords:  Management, information, infrastructure, conceptual design, Indigenous community 

  7. Use and Value of Geographic Information: Initiative 4 Specialist Meeting Summary Report and Proceedings (89-7)

    OpenAIRE

    Calkins, Hugh W.; Onsrud, Harlan; Obermeyer, Nancy

    1989-01-01

    The Specialist Meeting for Initiative 4, "the use and value of geographic information," was held in Tenants Harbor, Maine from May 6 through May 10, 1989. The meeting brought together a group of roughly thirty academics, government officials, andrepresentatives of private firms along with NCGIA researchers to develop an agenda for research on the use and value of geographic information. The meeting participants represented a variety of disciplines, including geography, surveying engineering, ...

  8. Canonical Information Analysis

    DEFF Research Database (Denmark)

    Vestergaard, Jacob Schack; Nielsen, Allan Aasbjerg

    2015-01-01

    Canonical correlation analysis is an established multivariate statistical method in which correlation between linear combinations of multivariate sets of variables is maximized. In canonical information analysis introduced here, linear correlation as a measure of association between variables...... is replaced by the information theoretical, entropy based measure mutual information, which is a much more general measure of association. We make canonical information analysis feasible for large sample problems, including for example multispectral images, due to the use of a fast kernel density estimator...... for entropy estimation. Canonical information analysis is applied successfully to (1) simple simulated data to illustrate the basic idea and evaluate performance, (2) fusion of weather radar and optical geostationary satellite data in a situation with heavy precipitation, and (3) change detection in optical...

  9. Visualization and Analysis of Geographical Crime Patterns Using Formal Concept Analysis

    OpenAIRE

    Kester, Quist-Aphetsi

    2013-01-01

    There are challenges faced in today's world in terms of crime analysis when it comes to graphical visualization of crime patterns. Geographical representation of crime scenes and crime types become very important in gathering intelligence about crimes. This provides a very dynamic and easy way of monitoring criminal activities and analyzing them as well as producing effective countermeasures and preventive measures in solving them. But we need effective computer tools and intelligent systems ...

  10. Spatial distribution and risk factors of influenza in Jiangsu province, China, based on geographical information system

    Directory of Open Access Journals (Sweden)

    Jia-Cheng Zhang

    2014-05-01

    Full Text Available Influenza poses a constant, heavy burden on society. Recent research has focused on ecological factors associated with influenza incidence and has also studied influenza with respect to its geographic spread at different scales. This research explores the temporal and spatial parameters of influenza and identifies factors influencing its transmission. A spatial autocorrelation analysis, a spatial-temporal cluster analysis and a spatial regression analysis of influenza rates, carried out in Jiangsu province from 2004 to 2011, found that influenza rates to be spatially dependent in 2004, 2005, 2006 and 2008. South-western districts consistently revealed hotspots of high-incidence influenza. The regression analysis indicates that railways, rivers and lakes are important predictive environmental variables for influenza risk. A better understanding of the epidemic pattern and ecological factors associated with pandemic influenza should benefit public health officials with respect to prevention and controlling measures during future epidemics.

  11. Spatial distribution and risk factors of influenza in Jiangsu province, China, based on geographical information system.

    Science.gov (United States)

    Zhang, Jia-Cheng; Liu, Wen-Dong; Liang, Qi; Hu, Jian-Li; Norris, Jessie; Wu, Ying; Bao, Chang-Jun; Tang, Fen-Yang; Huang, Peng; Zhao, Yang; Yu, Rong-Bin; Zhou, Ming-Hao; Shen, Hong-Bing; Chen, Feng; Peng, Zhi-Hang

    2014-05-01

    Influenza poses a constant, heavy burden on society. Recent research has focused on ecological factors associated with influenza incidence and has also studied influenza with respect to its geographic spread at different scales. This research explores the temporal and spatial parameters of influenza and identifies factors influencing its transmission. A spatial autocorrelation analysis, a spatial-temporal cluster analysis and a spatial regression analysis of influenza rates, carried out in Jiangsu province from 2004 to 2011, found that influenza rates to be spatially dependent in 2004, 2005, 2006 and 2008. South-western districts consistently revealed hotspots of high-incidence influenza. The regression analysis indicates that railways, rivers and lakes are important predictive environmental variables for influenza risk. A better understanding of the epidemic pattern and ecological factors associated with pandemic influenza should benefit public health officials with respect to prevention and controlling measures during future epidemics.

  12. Public Perception on Disaster Management Using Volunteered Geographic Information (vgi): Case of Uae

    Science.gov (United States)

    Yagoub, M. M.

    2015-10-01

    The number of smart phones that are supported by location facility like Global Positioning System (GPS), Camera and connected to the internet has increased sharply in UAE during the last five years. This increase offers a chance to capitalize on using these devices as resources for data collection, therefore reducing cost. In many cases specific events may happen in areas or at time where there may be no governmental departments to collect such unrepeated events. The current research will showcase various studies that had been conducted on Volunteered Geographic Information (VGI) debating various aspects such as accuracy, legal issues, and privacy. This research will also integrate Geographic Information System (GIS), VGI, social media tools, data mining, and mobile technology to design a conceptual framework for promoting public participation in UAE. The data gathered through survey will be helpful in correlating various aspects of VGI. Since there are diverse views about these aspects, policy makers are left undecided in many countries about how to deal with VGI. The assessment of the UAE case will contribute to the age-long debate by examining the willingness of the public to participate. The result will show the public perception to be as sensors for data collection. Additionally, the potential of citizen involvement in the risk and disaster management process by providing voluntary data collected for VGI applications will also be explored in the paper.

  13. Remote sensing and geographic information systems in the spatial temporal dynamics modeling of infectious diseases

    Institute of Scientific and Technical Information of China (English)

    GONG; Peng

    2006-01-01

    Similar to species immigration or exotic species invasion, infectious disease transmission is strengthened due to the globalization of human activities. Using schistosomiasis as an example, we propose a conceptual model simulating the spatio-temporal dynamics of infectious diseases. We base the model on the knowledge of the interrelationship among the source, media, and the hosts of the disease. With the endemics data of schistosomiasis in Xichang, China, we demonstrate that the conceptual model is feasible; we introduce how remote sensing and geographic information systems techniques can be used in support of spatio-temporal modeling; we compare the different effects caused to the entire population when selecting different groups of people for schistosomiasis control. Our work illustrates the importance of such a modeling tool in supporting spatial decisions. Our modeling method can be directly applied to such infectious diseases as the plague, lyme disease, and hemorrhagic fever with renal syndrome. The application of remote sensing and geographic information systems can shed light on the modeling of other infectious disease and invasive species studies.

  14. Evaluating the ecotourism potentials of Naharkhoran area in Gorgan using remote sensing and geographic information system

    Science.gov (United States)

    Oladi, Jafar; Bozorgnia, Delavar

    2010-10-01

    Ecotourism may be defined as voluntary travels to intact natural areas in order to enjoy the natural attractions as well as to get familiar with the culture of local communities. The main factor contributing to inappropriate land uses and natural resource destruction is overaggregation of ecotourists in some specific natural areas such as forests and rangelands; while other parts remain unvisited due to the lack of a proper propagation about those areas. Evaluating the ecotourism potentials of each area would lead to a wider participation of local people in natural resource conservation activities. In order to properly introduce the ecotourism potential areas, at first, we carried out land preparation practices using Geographic Information System (GIS) and Remote Sensing (RS) techniques; then, the maps of height, slope and orientation were produced using the digital elevation model (DEM) of the study area. Afterwards, we overlaid these maps and the ecotourism potential areas were identified on the map. These specified areas were classified into two land uses of mass and alternative ecotourism, with three subclasses (including class1, class2 and an inappropriate class) considered for each land use. To classify the image, the training areas determined on the ground using a GPS device (Ground Positioning System) were transferred on the RS image. Subsequently, the ecotourism potential areas were determined using a hybrid method. At the final phase, these areas were compared with the areas determined on the ecotourism potential map; as a result of this comparison, the overlaid ecotourism potential areas were distinguished on the Geographic information System.

  15. PUBLIC PERCEPTION ON DISASTER MANAGEMENT USING VOLUNTEERED GEOGRAPHIC INFORMATION (VGI: CASE OF UAE

    Directory of Open Access Journals (Sweden)

    M. M. Yagoub

    2015-10-01

    Full Text Available The number of smart phones that are supported by location facility like Global Positioning System (GPS, Camera and connected to the internet has increased sharply in UAE during the last five years. This increase offers a chance to capitalize on using these devices as resources for data collection, therefore reducing cost. In many cases specific events may happen in areas or at time where there may be no governmental departments to collect such unrepeated events. The current research will showcase various studies that had been conducted on Volunteered Geographic Information (VGI debating various aspects such as accuracy, legal issues, and privacy. This research will also integrate Geographic Information System (GIS, VGI, social media tools, data mining, and mobile technology to design a conceptual framework for promoting public participation in UAE. The data gathered through survey will be helpful in correlating various aspects of VGI. Since there are diverse views about these aspects, policy makers are left undecided in many countries about how to deal with VGI. The assessment of the UAE case will contribute to the age-long debate by examining the willingness of the public to participate. The result will show the public perception to be as sensors for data collection. Additionally, the potential of citizen involvement in the risk and disaster management process by providing voluntary data collected for VGI applications will also be explored in the paper.

  16. Land use changes in Pak Phanang Basin using satellite images and geographic information system

    Directory of Open Access Journals (Sweden)

    Yongchalermchai, C.

    2004-01-01

    Full Text Available This study defined major changes in land use in Pak Phanang Basin, Nakhon Si Thammarat Province by using remote sensing and geographic information system techniques. The land use map conducted by Department of Land Development in 1988 was compared with the land use map interpreted from satelliteimages of Landsat-5 TM acquired in 1995 and 1999. The results revealed that between 1988 to 1999, forest area in the basin decreased by a total of 98.08 km2, a drastic decline of 60% that was changed to rubber plantation area. The rubber area increased about 181.7 km2 or 41%. Shrimp farm area increased by 184.87 km2, equivalent to a high increase of 886% while paddy field area decreased by 248.7 km2, or 16% that was converted to shrimp farm and rubber land. A decline in forest area caused soil erosion. The severe expansion of shrimp farm area caused the salinity and affected nearby paddy field and water source areas, that resulted in degradation of the environment. Application of remote sensing and geographic information system was utilized as a tool for monitoring the land use change and planning proper resource utilization for sustainable development in Pak Phanang Basin.

  17. Assessment of Completeness and Positional Accuracy of Linear Features in Volunteered Geographic Information (vgi)

    Science.gov (United States)

    Eshghi, M.; Alesheikh, A. A.

    2015-12-01

    Recent advances in spatial data collection technologies and online services dramatically increase the contribution of ordinary people to produce, share, and use geographic information. Collecting spatial data as well as disseminating them on the internet by citizens has led to a huge source of spatial data termed as Volunteered Geographic Information (VGI) by Mike Goodchild. Although, VGI has produced previously unavailable data assets, and enriched existing ones. But its quality can be highly variable and challengeable. This presents several challenges to potential end users who are concerned about the validation and the quality assurance of the data which are collected. Almost, all the existing researches are based on how to find accurate VGI data from existing VGI data which consist of a) comparing the VGI data with the accurate official data, or b) in cases that there is no access to correct data; therefore, looking for an alternative way to determine the quality of VGI data is essential, and so forth. In this paper it has been attempt to develop a useful method to reach this goal. In this process, the positional accuracy of linear feature of Iran, Tehran OSM data have been analyzed.

  18. The Creation Of Web-Based Geographical Information System Of Drugstore Distribution

    Directory of Open Access Journals (Sweden)

    Sandy Kosasi

    2016-06-01

    Full Text Available The difficulties of finding the locations of the drugstores in a certain area often happen. They make the customers’ demands not satisfied. Low competitiveness of the drugstores is another impact. This research aims to create a web-based geographical information system (WebGis on the distribution of all drugstores located in the sub-districts of Pontianak using a web-based mapping approach. It is beneficial to use WebGis because the integrated information (i.e. spatial and non-spatial data can be provided. The information displays are also interactive and ease the customers to know the locations of the drugstores using certain view. Moreover, the system has a maptip feature that can be used to know the information of coordinate points showing the drugstore names, medical schedules, services, insurance, and addresses. The search column can be used to search the information of medicine and of physical appearance of drugstore buildings. Finally, the system maps all drugstores and gives accurate information. Therefore, the customers can analyze and find the drugstores with the nearest distance.

  19. Geographic Information Systems in Support of Wind Energy Activities at NREL: Preprint

    International Nuclear Information System (INIS)

    The National Renewable Energy Laboratory (NREL) uses Geographic Information Systems (GIS) to further the development of wind energy resources in support of the U.S. Department of Energy (DOE) Wind Energy Program and its Wind Powering America Initiative. Some of the elements of NREL's GIS data used in wind energy activities include wind measurement sites, transmission lines, federal facility information, and modeled wind resources. More complex GIS analyses can define relationships among the mapped wind energy resources, potential energy load characterization, and utility integration problems. A GIS is an outstanding tool for wind energy activities because data can be readily updated and the results of the GIS analyses can be expressed as charts, tables, and maps. These outputs are in digital formats that allow the results of GIS analyses to be quickly and efficiently distributed to the wind energy industry

  20. An introduction to geographic information systems as applied to a groundwater remediation program

    International Nuclear Information System (INIS)

    While the attention to environmental issues has grown over the past several years, so has the focus on groundwater protection. Addressing the task of groundwater remediation often involves a large-scale program with numerous wells and enormous amounts of data. This data must be manipulated and analyzed in an efficient manner for the remediation program to be truly effective. Geographic Information System's (GIS) have proven to be an extremely effective tool in handling and interpreting this type of groundwater information. The purpose of this paper is to introduce the audience to GIS technology, describe how it is being used at the Savannah River Site (SRS) to handle groundwater data and demonstrate how it may be used in the corporate Westinghouse environment

  1. DEVELOPMENT OF A CARBON MANAGEMENT GEOGRAPHIC INFORMATION SYSTEM (GIS) FOR THE UNITED STATES

    Energy Technology Data Exchange (ETDEWEB)

    Howard J. Herzog

    2004-03-01

    The Lab for Energy and Environment (LFEE) at MIT is developing a Geographic Information System (GIS) for carbon management. The GIS will store, integrate, and manipulate information relating to the components of carbon management systems. Additionally, the GIS can be used to interpret and analyze the effect of developing these systems. In the first year of this three year project, we focused on two tasks: (1) specifying the system design--defining in detail the GIS data requirements, the types of analyses that can be conducted, and the forms of output we will produce, as well as designing the computer architecture of the GIS and (2) creating the ''core'' datasets--identifying data sources and converting them into a form accessible by the GIS.

  2. Applications of geographic information system and expert system for urban runoff and water quality management

    Energy Technology Data Exchange (ETDEWEB)

    Lee, Beum-Hee [Pai Chai University, Taejeon(Korea)

    2001-06-30

    It is very important to select appropriate methods of collecting, predicting, and analyzing information for the development of urban water resources and the prevention of disasters. Thus, in this study an accurate data generation method is developed using Geographic Information System (GIS) and Remote Sensing (RS). The methods of development and application of an expert system are suggested to solve more efficiently the problems of water resources and quality induced by the rapid urbanization. The time-varying data in a large region, the An-Yang Cheon watershed, were reasonably obtained by the application of the GIS using ARC/INFO and RS data. The ESPE (Expert System for Parameter Estimation), an expert system is developed using the CLIPS 6.0. The simulated results showed agreement with the measured data globally. These methods are expected to efficiently simulate the runoff and water quality in the rapidly varying urban area. (author). 10 refs., 4 tabs., 10 figs.

  3. Deduction and application of generalized Euler formula in topological relation of geographic information system (GIS)

    Institute of Scientific and Technical Information of China (English)

    ZHANG Shuqing; ZHANG Junyan; ZHANG Bai

    2004-01-01

    By combining geographic information system (GIS), a new conception of "group" in which covers the complex connected region is introduced in the paper. Based on the conception of group, a generalized Euler formula and its properties are deduced and proved. The paper also describes the mathematical principles of generating topological information of polygon in GIS maps and the methods for checking up the veracity of topological relations of the map with Euler formula and general Euler formula. We have also obtained the quantitative relations among real nodes, chains, islands and groups with the formulas. At the same time, the paper introduces Whole Sphere Stereographic (WSS) projection into the GIS, and defines a new conception of "sea". The deduction of general Euler formula and the introduction of WSS projection to GIS have developed new ways of delineating GIS topological models from plane to sphere and even constructing three dimensional (3-D) topological models.

  4. Implementation of a Geographical Information System. GIS, in the Natural National Park, Cliffs of Cali

    International Nuclear Information System (INIS)

    The objective of this project was to generate a tool to improve the handling, conservation and administration of the Park National Natural - Cliffs of Cali, belonging to the Special Administrative Unit of the System of Natural National Parks, UAESPNN, of the Ministry of the Environment. With this purpose it was implemented a System of Geographical Information, GIS, like methodological model. The GIS; Cliffs of Cali used a database relational, developed with the software ACCESS tm, compatible with the used GIS Arc/INFO tm and Arc/View tm (for work station). The data space accessed to the database were those of topography, hydrology, areas of life, geology, limit, fronts, to zone with handling ends, precipitation, indigenous occupation and municipalities; it contain related alphanumeric information, administrative, socioeconomic handling and physique among others

  5. Groundwater Potential Assessment Using Geographic Information Systems and Ahp Method (case Study: Baft City, Kerman, Iran)

    Science.gov (United States)

    Zeinolabedini, M.; Esmaeily, A.

    2015-12-01

    The purpose of the present study is to use Geographical Information Systems (GISs) for determining the best areas having ground water potential in Baft city. To achieve this objective, parameters such as precipitation, slope, fault, vegetation, land cover and lithology were used. Regarding different weight of these parameters effect, Analytic Hierarchy Process (AHP) was used. After developing informational layers in GIS and weighing each of them, a model was developed. The final map of ground waters potential was calculated through the above-mentioned model. Through applying our developed model four areas having high, average, low potential and without required potential distinguished. Results of this research indicated that 0.74, 41.23 and 45.63 percent of the area had high, average and low potential, respectively. Moreover, 12.38% of this area had no potential. Obtained results can be useful in management plans of ground water resources and preventing excessive exploitation.

  6. Geographic, technologic, and economic analysis of using reclaimed water for thermoelectric power plant cooling.

    Science.gov (United States)

    Stillwell, Ashlynn S; Webber, Michael E

    2014-04-15

    Use of reclaimed water-municipal wastewater treatment plant effluent-in nonpotable applications can be a sustainable and efficient water management strategy. One such nonpotable application is at thermoelectric power plants since these facilities require cooling, often using large volumes of freshwater. To evaluate the geographic, technologic, and economic feasibility of using reclaimed water to cool thermoelectric power plants, we developed a spatially resolved model of existing power plants. Our model integrates data on power plant and municipal wastewater treatment plant operations into a combined geographic information systems and optimization approach to evaluate the feasibility of cooling system retrofits. We applied this broadly applicable methodology to 125 power plants in Texas as a test case. Results show that sufficient reclaimed water resources exist within 25 miles of 92 power plants (representing 61% of capacity and 50% of generation in our sample), with most of these facilities meeting both short-term and long-term water conservation cost goals. This retrofit analysis indicates that reclaimed water could be a suitable cooling water source for thermoelectric power plants, thereby mitigating some of the freshwater impacts of electricity generation.

  7. Geographic, technologic, and economic analysis of using reclaimed water for thermoelectric power plant cooling.

    Science.gov (United States)

    Stillwell, Ashlynn S; Webber, Michael E

    2014-04-15

    Use of reclaimed water-municipal wastewater treatment plant effluent-in nonpotable applications can be a sustainable and efficient water management strategy. One such nonpotable application is at thermoelectric power plants since these facilities require cooling, often using large volumes of freshwater. To evaluate the geographic, technologic, and economic feasibility of using reclaimed water to cool thermoelectric power plants, we developed a spatially resolved model of existing power plants. Our model integrates data on power plant and municipal wastewater treatment plant operations into a combined geographic information systems and optimization approach to evaluate the feasibility of cooling system retrofits. We applied this broadly applicable methodology to 125 power plants in Texas as a test case. Results show that sufficient reclaimed water resources exist within 25 miles of 92 power plants (representing 61% of capacity and 50% of generation in our sample), with most of these facilities meeting both short-term and long-term water conservation cost goals. This retrofit analysis indicates that reclaimed water could be a suitable cooling water source for thermoelectric power plants, thereby mitigating some of the freshwater impacts of electricity generation. PMID:24625241

  8. Cluster of liver cancer and immigration: A geographic analysis of incidence data for Ontario 1998–2002

    OpenAIRE

    Mao Yang; Yi Qilong; Chen Yue

    2008-01-01

    Abstract Background Liver cancer is not common in Canada in general; however, clustering of the disease causes a concern. We conducted a spatial analysis to determine the geographic variation of liver cancer and its association with the proportion of immigration in Ontario. Liver cancer incidence data between 1998 and 2002 were obtained from the Ontario Cancer Registry. The Canadian Community Health Survey (CCHS) in 2001 provided information on potential risk factors. Results Age standardized...

  9. Aerial Photography and Imagery, Ortho-Corrected, Digital Orthoimagery for Jones County 2008, Published in 2008, 1:2400 (1in=200ft) scale, NC Center for Geographic Information & Analysis.

    Data.gov (United States)

    NSGIC GIS Inventory (aka Ramona) — This Aerial Photography and Imagery, Ortho-Corrected dataset, published at 1:2400 (1in=200ft) scale, was produced all or in part from Orthoimagery information as of...

  10. Measuring community integration using Geographic Information Systems (GIS) and participatory mapping for people who were once homeless.

    Science.gov (United States)

    Chan, Dara V; Helfrich, Christine A; Hursh, Norman C; Sally Rogers, E; Gopal, Sucharita

    2014-05-01

    Measures of community integration rely on self-report assessments that often quantify physical or social participation, but fail to capture the individual׳s spatial presence in the community. The current study documents the activity space, or area of daily experiences, of 37 individuals who were once homeless through participatory mapping and Geographic Information Systems (GIS). Contrary to expectations, there was no significant relationship between activity space size and community integration measures, except a negative association with physical integration. Further analysis revealed, however, that continued use of homeless services, geographically spread throughout the city, was associated with larger activity space size, but may be counterproductive to social and psychological integration efforts. Analysis of the types of locations identified revealed high importance given to leisure locations and ongoing involvement with medical and mental health locations. Finally, community integration outcomes did not differ significantly by demographics or housing type, but rather degree of family involvement and feeling like home, factors that may have more potential for change.

  11. Possibility of Preparing Thematic Maps Through Developing of the Geographic Information System (GIS

    Directory of Open Access Journals (Sweden)

    Stjepan Husnjak

    2013-04-01

    Full Text Available It is a well known fact that nowadays planning of sustainable development and land use requires a lot of reliable and good quality information, which serves as the basis for timely and adequate decision-making. One of the most important forms of information is presented in various maps. Until recently, preparing of such data was, no doubt, a rather complex and time-consuming task. However, at present, thanks to, first of all, the GIS technology it is possible to develop corresponding geographic information systems with databases which then allow comparatively simple and quick preparing of necessary thematic maps. The paper first presents the method of developing the Geographic and Land Information System (GLIS of the Karlovac County which, although developed for the purpose of agricultural development, may also be used in the development of forestry, environment protection, physical planning, water management and for soil conservation and regulation. Several examples illustrate the possibilities of preparing of specialised maps based on this GLIS. The basic data for developing of the geographic and land information system were the data of the Basic Soil Maps and topographic maps of the Republic of Croatia at the scale of 1:50 000 or 1:25 000, and the data from other studies made for the purpose of agricultural development in the area. These data, together with the results of processing and analysing of this data, by digitalisation, generalisation and interpolation, were incorporated into an integrated database of the geographic and land information system by using Microstation, AutoCad, ArcInfo, ArcWiew and Access software and the corresponding hardware. GLIS database consists of two parts. The first part includes the data referring to polygons - pedological contours, and the other part the data on pedological profiles. The base is organised in a way that enable the preparation of different thematic maps, but it can be also used in digital form

  12. Framework for application of geographic information system to the monitoring of dengue vectors.

    Science.gov (United States)

    Su, M D; Chang, N T

    1994-12-01

    In a successful management program of dengue vectors, not only health education, source reduction or insecticide application should be conducted, but all basic information should also be manipulated properly and efficiently. This information includes the surveys of species, dispersal and dynamics of vectors, as well as the detection of breeding sources, and the records of dengue cases and epidemic periods. Most of the above information expressed as regionalized variables always varies spatially and/or temporally. However, due to the deficiency of topological information, the conventional database management system cannot efficiently analyze those dengue related data. Thus, we have applied the geographic information system (GIS) to the monitoring of dengue vectors. The purpose of this report is to introduce the basic concepts of GIS, to describe the framework of the prototype dengue vector monitoring system which was built using data collected from the Sanmin area, Kaoshiung city, Taiwan, and to indicate the possibility of using this system to manipulate spatially correlated data and support decision making in the control of dengue disease. PMID:7844857

  13. Assessing efficiency of spatial sampling using combined coverage analysis in geographical and feature spaces

    Science.gov (United States)

    Hengl, Tomislav

    2015-04-01

    Efficiency of spatial sampling largely determines success of model building. This is especially important for geostatistical mapping where an initial sampling plan should provide a good representation or coverage of both geographical (defined by the study area mask map) and feature space (defined by the multi-dimensional covariates). Otherwise the model will need to extrapolate and, hence, the overall uncertainty of the predictions will be high. In many cases, geostatisticians use point data sets which are produced using unknown or inconsistent sampling algorithms. Many point data sets in environmental sciences suffer from spatial clustering and systematic omission of feature space. But how to quantify these 'representation' problems and how to incorporate this knowledge into model building? The author has developed a generic function called 'spsample.prob' (Global Soil Information Facilities package for R) and which simultaneously determines (effective) inclusion probabilities as an average between the kernel density estimation (geographical spreading of points; analysed using the spatstat package in R) and MaxEnt analysis (feature space spreading of points; analysed using the MaxEnt software used primarily for species distribution modelling). The output 'iprob' map indicates whether the sampling plan has systematically missed some important locations and/or features, and can also be used as an input for geostatistical modelling e.g. as a weight map for geostatistical model fitting. The spsample.prob function can also be used in combination with the accessibility analysis (cost of field survey are usually function of distance from the road network, slope and land cover) to allow for simultaneous maximization of average inclusion probabilities and minimization of total survey costs. The author postulates that, by estimating effective inclusion probabilities using combined geographical and feature space analysis, and by comparing survey costs to representation

  14. Integrationof Remote Sensing and Geographic information system in Ground Water Quality Assessment and Management

    Science.gov (United States)

    Shakak, N.

    2015-04-01

    Spatial variations in ground water quality in the Khartoum state, Sudan, have been studied using geographic information system (GIS) and remote sensing technique. Gegraphical informtion system a tool which is used for storing, analyzing and displaying spatial data is also used for investigating ground water quality information. Khartoum landsat mosac image aquired in 2013was used, Arc/Gis software applied to extract the boundary of the study area, the image was classified to create land use/land cover map. The land use map,geological and soil map are used for correlation between land use , geological formations, and soil types to understand the source of natural pollution that can lower the ground water quality. For this study, the global positioning system (GPS), used in the field to identify the borehole location in a three dimentional coordinate (Latitude, longitude, and altitude), water samples were collected from 156 borehole wells, and analyzed for physico-chemical parameters like electrical conductivity, Total dissolved solid,Chloride, Nitrate, Sodium, Magnisium, Calcium,and Flouride, using standard techniques in the laboratory and compared with the standards.The ground water quality maps of the entire study area have been prepared using spatial interpolation technique for all the above parameters.then the created maps used to visualize, analyze, and understand the relationship among the measured points. Mapping was coded for potable zones, non-potable zones in the study area, in terms of water quality sutability for drinking water and sutability for irrigation. In general satellite remote sensing in conjunction with geographical information system (GIS) offers great potential for water resource development and management.

  15. A national look at carbon capture and storage-National carbon sequestration database and geographical information system (NatCarb)

    Science.gov (United States)

    Carr, T.R.; Iqbal, A.; Callaghan, N.; ,; Look, K.; Saving, S.; Nelson, K.

    2009-01-01

    The US Department of Energy's Regional Carbon Sequestration Partnerships (RCSPs) are responsible for generating geospatial data for the maps displayed in the Carbon Sequestration Atlas of the United States and Canada. Key geospatial data (carbon sources, potential storage sites, transportation, land use, etc.) are required for the Atlas, and for efficient implementation of carbon sequestration on a national and regional scale. The National Carbon Sequestration Database and Geographical Information System (NatCarb) is a relational database and geographic information system (GIS) that integrates carbon storage data generated and maintained by the RCSPs and various other sources. The purpose of NatCarb is to provide a national view of the carbon capture and storage potential in the U.S. and Canada. The digital spatial database allows users to estimate the amount of CO2 emitted by sources (such as power plants, refineries and other fossil-fuel-consuming industries) in relation to geologic formations that can provide safe, secure storage sites over long periods of time. The NatCarb project is working to provide all stakeholders with improved online tools for the display and analysis of CO2 carbon capture and storage data. NatCarb is organizing and enhancing the critical information about CO2 sources and developing the technology needed to access, query, model, analyze, display, and distribute natural resource data related to carbon management. Data are generated, maintained and enhanced locally at the RCSP level, or at specialized data warehouses, and assembled, accessed, and analyzed in real-time through a single geoportal. NatCarb is a functional demonstration of distributed data-management systems that cross the boundaries between institutions and geographic areas. It forms the first step toward a functioning National Carbon Cyberinfrastructure (NCCI). NatCarb provides access to first-order information to evaluate the costs, economic potential and societal issues of

  16. Combining geographic information system, multicriteria evaluation techniques and fuzzy logic in siting MSW landfills

    Science.gov (United States)

    Gemitzi, Alexandra; Tsihrintzis, Vassilios A.; Voudrias, Evangelos; Petalas, Christos; Stravodimos, George

    2007-01-01

    This study presents a methodology for siting municipal solid waste landfills, coupling geographic information systems (GIS), fuzzy logic, and multicriteria evaluation techniques. Both exclusionary and non-exclusionary criteria are used. Factors, i.e., non-exclusionary criteria, are divided in two distinct groups which do not have the same level of trade off. The first group comprises factors related to the physical environment, which cannot be expressed in terms of monetary cost and, therefore, they do not easily trade off. The second group includes those factors related to human activities, i.e., socioeconomic factors, which can be expressed as financial cost, thus showing a high level of trade off. GIS are used for geographic data acquisition and processing. The analytical hierarchy process (AHP) is the multicriteria evaluation technique used, enhanced with fuzzy factor standardization. Besides assigning weights to factors through the AHP, control over the level of risk and trade off in the siting process is achieved through a second set of weights, i.e., order weights, applied to factors in each factor group, on a pixel-by-pixel basis, thus taking into account the local site characteristics. The method has been applied to Evros prefecture (NE Greece), an area of approximately 4,000 km2. The siting methodology results in two intermediate suitability maps, one related to environmental and the other to socioeconomic criteria. Combination of the two intermediate maps results in the final composite suitability map for landfill siting.

  17. Automating Geographic Information Systems (GIS) through Python for the Hydrological Sciences

    Science.gov (United States)

    Madsen, K.

    2013-12-01

    Geographic Information Systems (GIS) have many applications in the hydrological sciences. However, GIS software is often expensive and difficult to automate. This paper will demonstrate how to automate GRASS GIS software using the Python programming language. Both GRASS GIS and Python are open source projects that are free for anyone to use. Automation of GIS processes is important when dealing with large-scale geographic studies, as large GIS maps are usually divided into discrete tiles. When conducting GIS transformations on such maps, the user must repeat the action for each tile, a process that is greatly expedited through automation. The paper will work through several examples of automated GIS processes and provide complete Python codes that demonstrate correct syntax for working with GRASS GIS applications. The provided examples will demonstrate automation of the following processes 1.) using raster math to calculate foliage thickness from LIDAR and DEM data; 2.) conducting raster interpolation from a set of vector points to develop a continuous hydraulic conductivity coverage; 3.) automating raster coloration to sync the coloration of a large number of raster tiles for website display, and 4.) constructing contoured vector lines from topography rasters. These examples programs will serve as the building blocks for readers, giving them the tools to automate any GIS process using Python and GRASS GIS.

  18. A Conceptual Model for the Management of Multi - Representation Geographical Information

    Directory of Open Access Journals (Sweden)

    Ugo Falchi

    2015-12-01

    Full Text Available The project was aimed at the creation of software tools for managing instances of a multi - representation geodatabase, able to define multiple representations and topological constraints, in relation to modelled objects and structures according to the classification of IntesaGIS first and, later, the Italian national technical specifications of the November 10, Italian Ministerial Decree 2011. An original conceptual model was created, capable of expressing the different representations (scale, time of the same geographic entities and relationships between them, directly into the geodatabase structure, by inserting an additional level of abstraction. In addition, various software tools were developed to create the database schema and its population using command line on Windows and Linux systems, as well as a graphical interface. The final goal is to be able to meet the needs of the production and use of geographical information with spatial and temporal components, with four dimensions: structure, space, time, and multiple representations. These dimensions are perpendicular to one another and enable individual operations to be performed independently of each other.

  19. Information content of MOPITT CO profile retrievals: Temporal and geographical variability

    Science.gov (United States)

    Deeter, M. N.; Edwards, D. P.; Gille, J. C.; Worden, H. M.

    2015-12-01

    Satellite measurements of tropospheric carbon monoxide (CO) enable a wide array of applications including studies of air quality and pollution transport. The MOPITT (Measurements of Pollution in the Troposphere) instrument on the Earth Observing System Terra platform has been measuring CO concentrations globally since March 2000. As indicated by the Degrees of Freedom for Signal (DFS), the standard metric for trace-gas retrieval information content, MOPITT retrieval performance varies over a wide range. We show that both instrumental and geophysical effects yield significant geographical and temporal variability in MOPITT DFS values. Instrumental radiance uncertainties, which describe random errors (or "noise") in the calibrated radiances, vary over long time scales (e.g., months to years) and vary between the four detector elements of MOPITT's linear detector array. MOPITT retrieval performance depends on several factors including thermal contrast, fine-scale variability of surface properties, and CO loading. The relative importance of these various effects is highly variable, as demonstrated by analyses of monthly mean DFS values for the United States and the Amazon Basin. An understanding of the geographical and temporal variability of MOPITT retrieval performance is potentially valuable to data users seeking to limit the influence of the a priori through data filtering. To illustrate, it is demonstrated that calculated regional-average CO mixing ratios may be improved by excluding observations from a subset of pixels in MOPITT's linear detector array.

  20. Socio-geographic analysis of the causes of the 2006’s wildfires in Galicia (Spain

    Directory of Open Access Journals (Sweden)

    J. Balsa Barreiro

    2013-12-01

    Full Text Available Aim of study: To propose a methodology to establish motivations underlying wildland fire episodes by analyzing both the socioeconomics of the affected territory and the geographical distribution of the wildfire.Area of study: The wildfires occurred during 2006 in Galicia, in the NW of Spain, were analyzed and compared regard to the previous years.Material and methods: The proposed methodology in this study is divided into four steps: (a definition of the forest context, (b fire episode and socioeconomic data collection, (c geospatial representation through map production, and (d joint analysis and data interpretation. A combined analysis of the spatial and temporal coincidence of wildfire and the socioeconomic activities is performed.Main results: A combined analysis of the spatial and temporal coincidence of wildfire dynamics and the socioeconomic activitiesallow us to assess and to interpret wildfire causes and motivations of socioeconomic groups. In our area study, a broad analysis indicates that wildfire recurrence within this region is related to an accelerated rural flight process which exacerbates the conflict between rural and urban models.Research highlights: The socio-geographical analysis of a territory’s wildfire dynamics enables us to establish possible causes and motivations of their origins. Providing the specific contextual and socioeconomic information, this methodology has potential applicability across varied study locations.Key words: forest; wildfires’ causes; geographical distribution; socioeconomic analysisAbbreviations: FAA (Forest Affected Area; IFN (Inventario Forestal Nacional; GIS (Geographical Information Systems; IGE (Instituto Galego de Estadística; IGN (Instituto Nacional de Estadística; MVMC (Montes Vecinales en Mano Común 

  1. Gulf-Wide Information System, Environmental Sensitivity Index Dispersant Preapproval Zone, Geographic NAD83, LDWF (2001) [esi_dispersant_preapproval_zone_LDWF_2001

    Data.gov (United States)

    Louisiana Geographic Information Center — This data set contains dispersant preapproval zones in coastal Louisiana. Feature-specific contact, type, and source information are stored in relational data...

  2. Mobile geonet: Anywhere, global and secure access to your geographic oriented information

    International Nuclear Information System (INIS)

    Today, the mobile technology has set up devices and communication architectures which change the way to work and improve efficiency and interactivity. EADS Matra Systems and Information is involved into these changes and develops a generic technology, mobile geonet, which brings these new means to improve the link between people who works together. Mobile geonet is a framework to develop mobile applications with a high security level and geographic capabilities. It is based on fully networked technologies (intranet/extranet/internet). It uses common mobile devices, enhanced by localisation and communication add-ons, like GPS, GSM or satellite phones modules. All the information processed and produced by upstream activities is stored in the DB GEO database system. These can be reports, maps, satellite images, structured information, points of interest and anything else with an potential geographic component. The role of the ASP (Application Service Provider) is to integrate existing applications or provide new ones. These applications are activated whether server-side, to mine, prepare and encode data or client-side to decode, present or interact in particular means with the user. The applications and data are disseminated through an extranet server. A particular interest of distributing the client applications by the ASP is the deployment cost on all mobile and fixed terminals, which is very small, because it is automatically downloaded for each upgrade. The communication layer aims at delivering applications up to the mobile device and permits the data exchange between the mobile device and the central data repository. Different means can be used: GSM network, internet or satellite communications. The applications are adapted to the available bandwidth, especially when image parts are downloaded. The mobile device is chosen on the shelf, depending of the requirements of the application. The computer can be a very small Pocket PC or a typical portable PC. For

  3. Use of geographical information systems in the daily operation of the pipe system

    International Nuclear Information System (INIS)

    HNG I/S is a partnership of 47 municipalities distributing natural gas to the municipalities of the three metropolitan counties of Copenhagen, Frederiksborg and Roskilde. HNG has 12 years' experience with the use of Geographical Information Systems. GIS is used as a tool for performing a number of tasks in the utility - projecting, valve registration, service pipe registration, finding of pipeline information and leak registration. The utility is presently working on integrating the use of the database in connection with supply planning net analyses and construction registration. The use of GIS offers the advantages of faster and better updates, better data quality and quicker finding of information; in addition, the GIS-system gives a better survey and a higher level of information in a large number of cases, because it makes it possible to get a picture on the basis of a number of search criteria. The objective is to have the GIS-system fully integrated with the administrative applications - word processing, spread sheets, etc. so that use of GIS will no longer be an isolated task, but an integrated part of the user's tools. The use of GIS will become a business parameter which can assist in meeting the increasing demands for quality, service and efficiency. (au)

  4. Software Application for Remote Monitoring of Fleets Based on Geographic Information Systems Using Open Source Technologies.

    Directory of Open Access Journals (Sweden)

    Jesse Daniel Cano

    2012-11-01

    Full Text Available Controlling a fleet usually implies to establish means of control of vehicles, to collect the data associated with the routes taken by these vehicles, to interpret and evaluate the meaning of the collected data and to make the appropriate decisions to improve the efficiency in the use of vehicles in an organization. The implementation of this process of fleet management is mainly performed manually and the solutions available on the market are costly because of the payments for licenses, it is also necessary that the people monitoring the fleets are geographically close to them. This paper aims to answer the following questions: How to reduce errors in the management of information resulting from the fleet management process? How to reduce the cost of remote fleet monitoring? To obtain the solution, we propose the use of GPS devices in each vehicle, the GPS device’s information is captured and consistently stored in a data base, then the information is consulted, analyzed and represented on a map. The result is a software application that allows users have fast and reliable information that will enable them to take the necessary decisions in the vehicle fleet they are trying to control at a low cost.

  5. Field Validation of Food Service Listings: A Comparison of Commercial and Online Geographic Information System Databases

    Science.gov (United States)

    Seliske, Laura; Pickett, William; Bates, Rebecca; Janssen, Ian

    2012-01-01

    Many studies examining the food retail environment rely on geographic information system (GIS) databases for location information. The purpose of this study was to validate information provided by two GIS databases, comparing the positional accuracy of food service places within a 1 km circular buffer surrounding 34 schools in Ontario, Canada. A commercial database (InfoCanada) and an online database (Yellow Pages) provided the addresses of food service places. Actual locations were measured using a global positioning system (GPS) device. The InfoCanada and Yellow Pages GIS databases provided the locations for 973 and 675 food service places, respectively. Overall, 749 (77.1%) and 595 (88.2%) of these were located in the field. The online database had a higher proportion of food service places found in the field. The GIS locations of 25% of the food service places were located within approximately 15 m of their actual location, 50% were within 25 m, and 75% were within 50 m. This validation study provided a detailed assessment of errors in the measurement of the location of food service places in the two databases. The location information was more accurate for the online database, however, when matching criteria were more conservative, there were no observed differences in error between the databases. PMID:23066385

  6. Field validation of food service listings: a comparison of commercial and online geographic information system databases.

    Science.gov (United States)

    Seliske, Laura; Pickett, William; Bates, Rebecca; Janssen, Ian

    2012-08-01

    Many studies examining the food retail environment rely on geographic information system (GIS) databases for location information. The purpose of this study was to validate information provided by two GIS databases, comparing the positional accuracy of food service places within a 1 km circular buffer surrounding 34 schools in Ontario, Canada. A commercial database (InfoCanada) and an online database (Yellow Pages) provided the addresses of food service places. Actual locations were measured using a global positioning system (GPS) device. The InfoCanada and Yellow Pages GIS databases provided the locations for 973 and 675 food service places, respectively. Overall, 749 (77.1%) and 595 (88.2%) of these were located in the field. The online database had a higher proportion of food service places found in the field. The GIS locations of 25% of the food service places were located within approximately 15 m of their actual location, 50% were within 25 m, and 75% were within 50 m. This validation study provided a detailed assessment of errors in the measurement of the location of food service places in the two databases. The location information was more accurate for the online database, however, when matching criteria were more conservative, there were no observed differences in error between the databases.

  7. Leukaemia clusters in childhood: geographical analysis in Britain

    Energy Technology Data Exchange (ETDEWEB)

    Knox, E.G.

    1994-08-01

    Study objective - To validate previously demonstrated spatial clustering of childhood leukaemias by showing relative proximities of selected map features to cluster locations, compared with control locations. If clusters are real, then they are likely to be close to a determining hazard. Design -Cluster postcode loci and partially matched control postcodes were compared in terms of distances to railways, main roads, churches, surface water, woodland areas, and railside industrial installations. Further supporting comparisons between non-clustered cases and random postcode controls with those map features representable as single grid points were made. Setting -England, Wales, and Scotland 1966-83. Subjects - Grid referenced registrations of 9406 childhood leukaemias and non-Hodgkin`s lymphomas, including 264 pairs (or more) separated by <150 m, and grid references of random postcodes in equal numbers. Main results - the 264 clusters showed relative proximities (or the inverse) to several map features, of which the most powerful was an association with railways. The non-railway associations seemed to be statistically indirect. Some railside industrial installations, identified from a railway atlas, also showed relative proximities to leukaemia clusters, as well as to non-clustered cases, but did not ``explain`` the railway effect. These installations, with seemingly independent geographical associations, included oil refineries, petrochemical plants, oil storage and oil distribution depots, power stations, and steelworks. Conclusions - The previously shown childhood leukaemia clusters are confirmed to be non-random through their systematic associations with certain map features when compared with the control locations. The common patterns of close association of clustered and non-clustered cases imply a common aetiological component arising from a common environmental hazard - namely the use of fossil fuels, especially petroleum. (UK)

  8. Geographical analysis of the distribution and spread of human rabies in china from 2005 to 2011.

    Directory of Open Access Journals (Sweden)

    Danhuai Guo

    Full Text Available BACKGROUND: Rabies is a significant public health problem in China in that it records the second highest case incidence globally. Surveillance data on canine rabies in China is lacking and human rabies notifications can be a useful indicator of areas where animal and human rabies control could be integrated. Previous spatial epidemiological studies lacked adequate spatial resolution to inform targeted rabies control decisions. We aimed to describe the spatiotemporal distribution of human rabies and model its geographical spread to provide an evidence base to inform future integrated rabies control strategies in China. METHODS: We geo-referenced a total of 17,760 human rabies cases of China from 2005 to 2011. In our spatial analyses we used Gaussian kernel density analysis, average nearest neighbor distance, Spatial Temporal Density-Based Spatial Clustering of Applications with Noise and developed a model of rabies spatiotemporal spread. FINDINGS: Human rabies cases increased from 2005 to 2007 and decreased during 2008 to 2011 companying change of the spatial distribution. The ANN distance among human rabies cases increased between 2005 and 2011, and the degree of clustering of human rabies cases decreased during that period. A total 480 clusters were detected by ST-DBSCAN, 89.4% clusters initiated before 2007. Most of clusters were mainly found in South of China. The number and duration of cluster decreased significantly after 2008. Areas with the highest density of human rabies cases varied spatially each year and in some areas remained with high outbreak density for several years. Though few places have recovered from human rabies, most of affected places are still suffering from the disease. CONCLUSION: Human rabies in mainland China is geographically clustered and its spatial extent changed during 2005 to 2011. The results provide a scientific basis for public health authorities in China to improve human rabies control and prevention program.

  9. Knowledge-based geographic information systems (KBGIS): New analytic and data management tools

    Science.gov (United States)

    Albert, T.M.

    1988-01-01

    In its simplest form, a geographic information system (GIS) may be viewed as a data base management system in which most of the data are spatially indexed, and upon which sets of procedures operate to answer queries about spatial entities represented in the data base. Utilization of artificial intelligence (AI) techniques can enhance greatly the capabilities of a GIS, particularly in handling very large, diverse data bases involved in the earth sciences. A KBGIS has been developed by the U.S. Geological Survey which incorporates AI techniques such as learning, expert systems, new data representation, and more. The system, which will be developed further and applied, is a prototype of the next generation of GIS's, an intelligent GIS, as well as an example of a general-purpose intelligent data handling system. The paper provides a description of KBGIS and its application, as well as the AI techniques involved. ?? 1988 International Association for Mathematical Geology.

  10. Geographical Information Systems for International River Basin Management in the Third World

    Energy Technology Data Exchange (ETDEWEB)

    Kammerud, Terje Andre

    1997-12-31

    This thesis discusses implementation and application of Geographical Information systems (GIS) in international River Basin Organizations (RBOs) in the Third World. Third World countries sharing the same river basin are increasingly experiencing conflicts because they exploit the same water resource. Empirical knowledge is derived from two case studies. (1) The Mekong River Commission Secretariat`s experiences in applying GIS are investigated. The conditions assessed are related to institutional, funding, expertise, training and technology issues for successful application of GIS. (2) The prospects for the implementation of GIS at a future WATERNET Centre in Amman are investigated. Israel, Jordan and the Palestinian Authority have decided to establish a regional GIS Centre in the lower Jordan River Basin. The study assesses political, legal and institutional conditions for the successful implementation of GIS. It is concluded that implementing and applying GIS successfully in RBOs in the Third World is challenging, although not for technological reasons. 265 refs., 28 figs., 13 tabs.

  11. Geographical Information Systems Assessment of Development Disparities Among Romanian Regions of Development

    Directory of Open Access Journals (Sweden)

    SORIN DANIEL MANOLE

    2012-01-01

    Full Text Available New strategies of the European Union, focused directly on regional development or originated from different areas, but leading to changes in this field, had resulted into a set of indices used to monitor the effects of their implementation. Previous studies suggest that flexible systems perform better and could strengthen the administrative capacity of accessing structural and cohesion funds. Our study used the Geographical Information Systems (GIS to produce hierarchies of the territorial indices at NUTS level II, displayed as charts and maps underlining the disparities between the socioeconomic, cultural and environmental aspects of the development. The results suggest that the regions with a low potential of development are situated in the south of Romania, but, most important, underline the potential of the method to be used as a planning tool in regional development, as its flexibility allows for an input with particular focus from different stakeholders, resulting into the selection of different indices and weights.

  12. Coproduction of flood hazard assessment with public participation geographic information system

    Science.gov (United States)

    Cheung, W. H.; Houston, D.; Schubert, J.; Basolo, V.; Feldman, D.; Matthew, R.; Sanders, B. F.; Karlin, B.; Goodrich, K.; Contreras, S.; Reyes, A.; Serrano, K.; Luke, A.

    2015-12-01

    While advances in computing have enabled the development of more precise and accurate flood models, there is growing interest in the role of crowdsourced local knowledge in flood modeling and flood hazard assessment. In an effort to incorporate the "wisdom of the crowd" in the identification and mitigation of flood hazard, this public participation geographic information system (PPGIS) study leveraged tablet computers and cloud computing to collect mental maps of flooding from 166 households in Newport Beach, California. The mental maps were analyzed using GIS techniques and compared with professional hydrodynamic model of coastal flooding. The results revealed varying levels of agreement between residents' mental maps and professional model of flood risk in regions with different personal and contextual characteristics. The quantification of agreement using composite indices can help validate professional models, and can also alert planners and decisionmakers of the need to increase flood awareness among specific populations.

  13. Recent Progress of Marine Geographic Information System in China: A Review for 2006-2010

    Institute of Scientific and Technical Information of China (English)

    CHEN Ge; LI Wenqing; KONG Qianqian; LIU Shouxin; LV Chongjing; TIAN Fenglin

    2012-01-01

    In this article,the progress of marine geographic information system (MGIS) in China during 2006-2010 is reviewed with emphases on generic MGIS,advanced MGIS and MGIS-based applications.Generic MGIS can be divided into two categories:data-oriented MGIS and user-oriented MGIS,recent achievements of which by Chinese researchers are summarized respectively.Advanced MGIS mainly involves the establishment of 3D virtual marine environment and ‘Digital Ocean'.An overview of the 3D MGIS based simulations in the context of ocean phenomena,ocean engineering and ocean battlefield is also presented.Several suggestions for future development of MG1S in China are proposed,and trends of development are addressed.

  14. Evaluation of Eco-Environmental Frangibility Based on Remote Sensing and Geographic Information System

    Institute of Scientific and Technical Information of China (English)

    WU Hua; TAG Heping; LU Yuan

    2007-01-01

    The eco-environmental frangibility is studied by choosing the factors of land use class change and vegetation cover rate, and the equation of eco-environmental frangibility and its evaluation system are established based on remote sensing (RS) and geographic information system technology (GIS). Four different years of TM images are selected to calculate land use change grads and vegetation cover rate, and the relationship between the two factors and eco-environment frangibility index are build, taking Fuzhou as an example. The character of times change and space distribution of eco-environment frangibility are described. The result indicates the area of eco-environment frangibility increased 2.6% in Fuzhou during twelve years, and expands from the region between infield and forest land to forest land in space distribution.

  15. Optimal Cell Towers Distribution by using Spatial Mining and Geographic Information System

    CERN Document Server

    AL-Hamami, Alaa H

    2011-01-01

    The appearance of wireless communication is dramatically changing our life. Mobile telecommunications emerged as a technological marvel allowing for access to personal and other services, devices, computation and communication, in any place and at any time through effortless plug and play. Setting up wireless mobile networks often requires: Frequency Assignment, Communication Protocol selection, Routing schemes selection, and cells towers distributions. This research aims to optimize the cells towers distribution by using spatial mining with Geographic Information System (GIS) as a tool. The distribution optimization could be done by applying the Digital Elevation Model (DEM) on the image of the area which must be covered with two levels of hierarchy. The research will apply the spatial association rules technique on the second level to select the best square in the cell for placing the antenna. From that the proposal will try to minimize the number of installed towers, makes tower's location feasible, and pr...

  16. Remote sensing and GIS [geographic information system] technology for wildlife habitat assessment

    International Nuclear Information System (INIS)

    A geographic information system (GIS) data base was prepared for 217 square kilometers of the Savannah River Plant (SRP). Since 1952, these facilities have released once-through cooling water into several streams and lakes which eventually discharge into the Savannah River. The thermal effluents have altered wetland vegetation along the stream channel floodplains and in the SRP portion of the Savannah River swamp. Two large cooling reservoirs were constructed to reduce these effects. Terrestrial and aquatic wildlife habitat studies were conducted as part of the Final Environmental Impact Statement prepared for several cooling system alternatives. This paper addresses the use of a GIS data base and other remote sensing data in support of habitat assessments for these alternatives using the US Fish and Wildlife Service Habitat Evaluation Procedures. 9 refs

  17. Application of geographic information system as support technique in site selection for radioactive waste disposal

    International Nuclear Information System (INIS)

    The present work describes an application of Geographic Information System (GIS). This technology was used to select, hypothetically, a site to disposal of radioactive wastes. In this work, the methodology is applied in an area of the Projeto Hidrogeologico do Engenho Nogueira (PROHBEN), located at Pampulha's region, in Belo Horizonte city. The GIS used the software Idrisi. This software was used to create the Digital Elevation Model, maps of declivity, thickness of unsaturated zone and geology of the region. This database was processed using GIS's recourses capability to create a vulnerability map of the aquifer, of the region. The site to disposal of radioactive wastes was select using the vulnerability map. (author). 4 refs., 9 figs., 4 tabs

  18. Using a geographical-information-system-based decision support to enhance malaria vector control in zambia.

    Science.gov (United States)

    Chanda, Emmanuel; Mukonka, Victor Munyongwe; Mthembu, David; Kamuliwo, Mulakwa; Coetzer, Sarel; Shinondo, Cecilia Jill

    2012-01-01

    Geographic information systems (GISs) with emerging technologies are being harnessed for studying spatial patterns in vector-borne diseases to reduce transmission. To implement effective vector control, increased knowledge on interactions of epidemiological and entomological malaria transmission determinants in the assessment of impact of interventions is critical. This requires availability of relevant spatial and attribute data to support malaria surveillance, monitoring, and evaluation. Monitoring the impact of vector control through a GIS-based decision support (DSS) has revealed spatial relative change in prevalence of infection and vector susceptibility to insecticides and has enabled measurement of spatial heterogeneity of trend or impact. The revealed trends and interrelationships have allowed the identification of areas with reduced parasitaemia and increased insecticide resistance thus demonstrating the impact of resistance on vector control. The GIS-based DSS provides opportunity for rational policy formulation and cost-effective utilization of limited resources for enhanced malaria vector control.

  19. The development of a natural language interface to a geographical information system

    Science.gov (United States)

    Toledo, Sue Walker; Davis, Bruce

    1993-01-01

    This paper will discuss a two and a half year long project undertaken to develop an English-language interface for the geographical information system GRASS. The work was carried out for NASA by a small business, Netrologic, based in San Diego, California, under Phase 1 and 2 Small Business Innovative Research contracts. We consider here the potential value of this system whose current functionality addresses numerical, categorical and boolean raster layers and includes the display of point sets defined by constraints on one or more layers, answers yes/no and numerical questions, and creates statistical reports. It also handles complex queries and lexical ambiguities, and allows temporarily switching to UNIX or GRASS.

  20. Municipal Solid Waste Management using Geographical Information System aided methods: a mini review.

    Science.gov (United States)

    Khan, Debishree; Samadder, Sukha Ranjan

    2014-11-01

    Municipal Solid Waste Management (MSWM) is one of the major environmental challenges in developing countries. Many efforts to reduce and recover the wastes have been made, but still land disposal of solid wastes is the most popular one. Finding an environmentally sound landfill site is a challenging task. This paper addresses a mini review on various aspects of MSWM (suitable landfill site selection, route optimization and public acceptance) using the Geographical Information System (GIS) coupled with other tools. The salient features of each of the integrated tools with GIS are discussed in this paper. It is also addressed how GIS can help in optimizing routes for collection of solid wastes from transfer stations to disposal sites to reduce the overall cost of solid waste management. A detailed approach on performing a public acceptance study of a proposed landfill site is presented in this study. The study will help municipal authorities to identify the most effective method of MSWM.