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Sökning: WFRF:(Sivertun Åke)

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1.
  • Abugessaisa, Imad, et al. (författare)
  • A Systemic View on Swedish Traffic Accident Data Acquisition System
  • 2007
  • Ingår i: Proceedings of the 14th International Conference on Road Safety on Four Continents (RS4C), 14-16 November, Bangkok, Thailand. - Sweden : VTI. ; , s. 1-12
  • Konferensbidrag (refereegranskat)abstract
    • This paper presents work in progress to study information sharing among road safety organizations. The focus is to study accident data acquisition system. In 2002, Swedish Road Transport authority (SRT) has accepted STRADA as accident reporting system to be used by the police all over Sweden. Such system is vital for coordinating, maintaining and auditing road safety in the country. Normally road accidents are reported by the police or by Emergency unit at the hospital. However more than 50% of the hospitals in Sweden didn’t use the system which decrease the utilization of the system and reduce the quality of the information that demanded. By using system thinking approach in this study we try to see why such situation is occurred and how changes can be introduced and handle to overcome such problem. Interviews conducted with focus group and different users of the system. To investigate the issues related to the acceptance of the system we use Technology Acceptance Model (TAM). We recommend getting the user involved in the life cycle of the STRADA and also the developers could use enabling system to overcome problems in related to system usability and complexity. Also we suggest the use of iterative development to govern the life cycle.
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  • Abugessaisa, Imad, 1973- (författare)
  • Analytical tools and information-sharing methods supporting road safety organizations
  • 2008
  • Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
    • A prerequisite for improving road safety are reliable and consistent sources of information about traffic and accidents, which will help assess the prevailing situation and give a good indication of their severity. In many countries there is under-reporting of road accidents, deaths and injuries, no collection of data at all, or low quality of information. Potential knowledge is hidden, due to the large accumulation of traffic and accident data. This limits the investigative tasks of road safety experts and thus decreases the utilization of databases. All these factors can have serious effects on the analysis of the road safety situation, as well as on the results of the analyses.This dissertation presents a three-tiered conceptual model to support the sharing of road safety–related information and a set of applications and analysis tools. The overall aim of the research is to build and maintain an information-sharing platform, and to construct mechanisms that can support road safety professionals and researchers in their efforts to prevent road accidents. GLOBESAFE is a platform for information sharing among road safety organizations in different countries developed during this research.Several approaches were used, First, requirement elicitation methods were used to identify the exact requirements of the platform. This helped in developing a conceptual model, a common vocabulary, a set of applications, and various access modes to the system. The implementation of the requirements was based on iterative prototyping. Usability methods were introduced to evaluate the users’ interaction satisfaction with the system and the various tools. Second, a system-thinking approach and a technology acceptance model were used in the study of the Swedish traffic data acquisition system. Finally, visual data mining methods were introduced as a novel approach to discovering hidden knowledge and relationships in road traffic and accident databases. The results from these studies have been reported in several scientific articles.
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  • Abugessaisa, Imad, et al. (författare)
  • ICT in regional networks in the field of culture and development cooperation in 15th Americas Conference on Information Systems 2009, AMCIS 2009, vol 4, issue , pp 2667-2674
  • 2009
  • Ingår i: AMCIS 2009 Proceedings, 15th Americas Conference on Information Systems 2009. ; , s. 2667-2674
  • Konferensbidrag (refereegranskat)abstract
    • This paper presents results from a mapping study commissioned by Swedish International Development Agency (Sida), which has supported regional and global networking within the field of culture. The mapping study was carried out in East Africa to find ways to collect and use experiences already made and to draw conclusions on the status and use of ICT in the culture networks supported by Sida. Another goal was to gain an understanding of the level to which ICT is used within the cultural sectors in East Africa. The study was focused on two main cultural sectors - museums and drama/theatre. A variety of research methods were used. It was found that there were well-established culture networks in both theatre and museum sectors. Through these networks, ICT has been used for sharing knowledge as well as being a tool for communication. Also it has supported dialogue among many different culture groups in the region. © (2009) by the AIS/ICIS Administrative Office All rights reserved.
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  • Abugessaisa, Imad, et al. (författare)
  • Ontological Approach to Modeling Information Systems
  • 2004
  • Ingår i: Proceedings of the Fourth International Conference on Computer and information Technology (Cit'04), 14–16 September, Wuhan, China: IEEE Computer Society, Washington, DC. ; , s. 1122-1127
  • Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
    • In recent years, the use of formal tools in information system modeling and development represents a potential area of research in computer science. In 1967, the term ontology appeared for the first time in computer science literature as S. H. Mealy introduced it as a basic foundation in data modeling. The main objective of this paper is to discuss the concept of ontology (from a philosophical perspective) as it was used to bridge the gap between philosophy and information systems science, and to investigate ontology types that can be found during ontological investigation and the methods used in the investigation process. The secondary objective of this paper is to study different design and engineering approaches of ontology as well as development environments that are used to create and edit ontologies.
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  • Albano, Raffaele, et al. (författare)
  • Large scale flood risk mapping in data scarce environments : An application for Romania
  • 2020
  • Ingår i: Water. - : MDPI AG. - 2073-4441. ; 12:6
  • Tidskriftsartikel (refereegranskat)abstract
    • Large-scale flood risk assessment is essential in supporting national and global policies, emergency operations and land-use management. The present study proposes a cost-efficient method for the large-scale mapping of direct economic flood damage in data-scarce environments. The proposed framework consists of three main stages: (i) deriving a water depth map through a geomorphic method based on a supervised linear binary classification; (ii) generating an exposure land-use map developed from multi-spectral Landsat 8 satellite images using a machine-learning classification algorithm; and (iii) performing a flood damage assessment using a GIS tool, based on the vulnerability (depth-damage) curves method. The proposed integrated method was applied over the entire country of Romania (including minor order basins) for a 100-year return time at 30-m resolution. The results showed how the description of flood risk may especially benefit from the ability of the proposed cost-efficient model to carry out large-scale analyses in data-scarce environments. This approach may help in performing and updating risk assessments and management, taking into account the temporal and spatial changes in hazard, exposure, and vulnerability. 
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