| 1. |
- Farcas, Florentina, et al.
(författare)
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Road traffic noise : GIS tools for noise mapping and a case study for Skåne region
- 2009
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Ingår i: ISPRS Workshop on quality, scale and analysis aspects of city models, Lund, Sweden, December 3-4, 2009. - Lund.
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Konferensbidrag (refereegranskat)abstract
- Traffic noise pollution is a growing problem that highly affects the health of people. To cope with this problem one has to regulate traffic or construct noise barriers. In order to implement effective measures against traffic noise the information about its distribution – noise maps - is imperative. This paper presents our work in creating a noise calculator software package implementation that can create noise maps. The noise calculator is based on the noise model described in Nordic prediction method for road traffic noise. As a case study, the noise calculator was used to build both large noise maps for Skåne region in south of Sweden and detailed noise maps for smaller areas in the city of Lund.
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| 3. |
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| 4. |
- Kohli, Sunil, 1955-, et al.
(författare)
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Distance from the primary health center : a GIS method to study geographical access to health care
- 1995
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Ingår i: Journal of medical systems. - 0148-5598 .- 1573-689X. ; 19:6, s. 425-436
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Tidskriftsartikel (refereegranskat)abstract
- Aerial distance from the dependent Primary Health Center is a crude but objective measure of geographical accessibility to Primary Health care facilities. This report describes a method for calculation of distances between the PHC and the population it serves using the data available from the local health authorities and the Swedish Central Statistical Bureau. The Swedish annual population registration records of 1991 and the property register available with the Central Statistical Bureau of Sweden formed the main data sources. By coupling the address in the population register to the property register each individual was mapped to the centroid of a property. The location of the PHCs as well as the areas covered by each were obtained from the local health authorities and mapped. By intersecting the population coverage with the PHC coverage the population for each PHC area was identified. Subsequently the distance to the PHC was calculated for each individual (property centroid). The population maps so generated can be linked to other databases to visualize and analyze the spatial dimension of health and disease. The methodology can be adapted for use with postal code districts, census enumeration tracts, or any other small area.
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| 5. |
- Kohli, Sunil, et al.
(författare)
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Individuals living in areas with high background radon : a GIS method to identify populations at risk
- 1997
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Ingår i: Computer Methods and Programs in Biomedicine. - 0169-2607 .- 1872-7565. ; 53:2, s. 105-112
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Tidskriftsartikel (refereegranskat)abstract
- Objective: to identify and link populations and individuals that live within high risk areas. Design: census registers and disease registers which contain data on individuals can only give aggregate statistics relating to postal code districts, town, county or state boundaries. However environmental risk factors rarely, if ever, respect these man-made boundaries. What is needed is a method to rapidly identify individuals who may live within a described area or region and to further identify the disease(s) occurring among these individuals and/or in these areas. Method: this paper describes a method for linking the standard registers available in Sweden, notably the residence-property addresses they contain and the geographical coordinate setting of these, to map the population as a point coverage. Using standard GIS methods this coverage could be linked, merged or intersected with any other map to create new subsets of population. Representation of populations down to the individual level by automatised spatialisation of available census data is in its simplicity a new informatics method which in the designated GIS medium adds a new power of resolution. Results: we demonstrate this using the radon maps provided by the local communes. The Swedish annual population registration records of 1991 for the county ofÖstergötland and the property register available at the Central Statistical Bureau of Sweden formed the main data sources. By coupling the address in the population register to the property register each individual was mapped to the centroid of a property. By intersecting the population coverage with the radon maps, the population living in high, normal or low risk areas was identified and then analysed and stratified by commune, sex and age. The resulting tables can be linked to other databases, e.g. disease registers, to visualise and analyse geographical and related patterns. The methodology can be adapted for use with any other environmental map or small area. It can also be expanded to the fourth dimension by linking likewise available migration information to generate immediately coordinate-set, accumulated exposition and similar data.
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| 6. |
- Litzinger, Paul, et al.
(författare)
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Using Weather Information to Improve Route Planning
- 2012
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Ingår i: Bridging the Geographic Information Sciences. - : Springer Berlin/Heidelberg. - 9783642290633 ; , s. 199-214
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Bokkapitel (refereegranskat)abstract
- Weather has a significant influence on navigation processes. Driving dur-ing a heavy rain, for example, is slower and due to poor visibility more dangerous than driving in perfect weather conditions. Thus from time management and safety perspective including weather information is bene-ficial. Weather, especially rain may also be critical for transportation tasks since some commodities like straw or sand should not get wet. In the last years, the quality of weather information and weather forecast has im-proved and could be used to improve route planning. The paper discusses how weather information can be included in route planning algorithms. A first approximating algorithm to incorporate weather forecast data is pre-sented. Some examples showing the impact on route planning conclude the paper.
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| 8. |
- Morales-Simfors, Nury, 1956-, et al.
(författare)
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Structural and Stratigraphic Controls of Malawi's Hotsprings : a Review
- 2015
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Ingår i: Proceedings World Geothermal Congress 2015 Melbourne, Australia, 19-25 April 2015. - Bochum, Germany : International Geothermal Association.
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Konferensbidrag (refereegranskat)abstract
- Active continental divergent zones such as those in the East African Rift System (EARS) hold significant potential for commercially exploitable geothermal resources. Evaluating these zones and characterizing the structural and stratigraphic controls may give insights of the most favourable locations for geothermal activity in a particular area. Due to the geological setting in the western branch of the EARS, several surface manifestations of geothermal energy mostly in the form of hotsprings have been found throughout Malawi. According to our results it seems that there is a strong correlation between the strike of the hotsprings, rock type, regional faulting and the seismic rupture in 2009. However, the country’s full potential has not been evaluated despite these hotspring manifestations throughout this rift segment. Those hotsprings with a high probability of containing easily extractable, commercially viable energy have still to be re-evaluated in order to locate the most favourable areas for geothermal exploration in the area. To achieve this, more local studies are necessary in order to understand better the stratigraphic and structural controls of the hotsprings in the studied area, in order to attract local and international investors. Therefore, the objective of this paper is to give an overview of the geological, structural, geochemical and seismic characteristics in northern Malawi for the exploration of geothermal energy. Once explored, this resource could become crucial in the country’s future development and economy.
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| 10. |
- Nilsson, Susanna, 1978-, et al.
(författare)
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Aspects of GI and GIS Use in Pre-and Post-flooding Phases of Swedish Emergency Management - a case study
- 2005
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Ingår i: European Safety, Reliability Data Association Seminar,2005. - Ispra, Italy : Joint Research Centre. ; , s. 213-
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Konferensbidrag (refereegranskat)abstract
- In this paper the present role of geographic information (GI) and geographic information systems (GIS) in flood emergency management (EM) is investigated. A case study method is used to study pre- and post-flooding phases of EM in two Swedish municipalities. The results indicate apparent ontological and semantic differences between the involved decision-makers on what constitutes important problems and on what type of information is relevant. Furthermore, knowledge of GI and GIS was also found differing between the decision-makers. Organizational, conceptual, ontological, and semantic problems were identified as essential for GI and GIS utilization. Concerning the increasing role of GI and GIS in EM, further research on the studied problems is necessary as their elimination or at least minimization is a prerequisite for introducing a mature GIS in flood EM.
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