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  • 1.
    Atif, Yacine
    et al.
    Högskolan i Skövde, Institutionen för informationsteknologi.
    Ding, Jianguo
    Högskolan i Skövde, Institutionen för informationsteknologi.
    Lindström, Birgitta
    Högskolan i Skövde, Institutionen för informationsteknologi.
    Jeusfeld, Manfred
    Högskolan i Skövde, Institutionen för informationsteknologi.
    Andler, Sten F.
    Högskolan i Skövde, Institutionen för informationsteknologi.
    Yuning, Jiang
    Högskolan i Skövde, Institutionen för informationsteknologi.
    Brax, Christoffer
    CombiTech AB, Skövde, Sweden.
    Gustavsson, Per M.
    CombiTech AB, Skövde, Sweden.
    Cyber-Threat Intelligence Architecture for Smart-Grid Critical Infrastructures Protection2017Conference paper (Refereed)
    Abstract [en]

    Critical infrastructures (CIs) are becoming increasingly sophisticated with embedded cyber-physical systems (CPSs) that provide managerial automation and autonomic controls. Yet these advances expose CI components to new cyber-threats, leading to a chain of dysfunctionalities with catastrophic socio-economical implications. We propose a comprehensive architectural model to support the development of incident management tools that provide situation-awareness and cyber-threats intelligence for CI protection, with a special focus on smart-grid CI. The goal is to unleash forensic data from CPS-based CIs to perform some predictive analytics. In doing so, we use some AI (Artificial Intelligence) paradigms for both data collection, threat detection, and cascade-effects prediction. 

  • 2.
    Emmelin, Lars
    Blekinge Institute of Technology, Faculty of Engineering, Department of Spatial Planning.
    Reflections on a dysfunctional SEA-system: the case of Swedish spatial planning2016In: European and International Experiences of Strategic Environmental Assessment: Recent Progress and Future Prospects / [ed] Sadler, B., Dusík, J., Taylor & Francis, 2016, p. 84-108Chapter in book (Other academic)
  • 3.
    Josyula, Sai Prashanth
    et al.
    Blekinge Institute of Technology, Faculty of Computing, Department of Computer Science and Engineering.
    Törnquist Krasemann, Johanna
    Blekinge Institute of Technology, Faculty of Computing, Department of Computer Science and Engineering.
    Passenger-oriented Railway Traffic Re-scheduling: A Review of Alternative Strategies utilizing Passenger Flow Data2017Conference paper (Refereed)
    Abstract [en]

    Developing and operating seamless, attractive and efficient public transport services in a liberalized market requires significant coordination between involved actors, which is both an organizational and technical challenge. During a journey, passengers often transfer between different transport services. A delay of one train or a bus service can potentially cause the passenger to miss the transfer to the subsequent service. If those services are provided by different operators and those are not coordinated and the information about the services are scattered, the passengers will suffer. In order to incorporate the passenger perspective in the re-scheduling of railway traffic and associated public transport services, the passenger flow needs to be assessed and quantified. We therefore perform a survey of previous research studies that propose and apply computational re-scheduling support for railway traffic disturbance management with a passenger-oriented objective. The analysis shows that there are many different ways to represent and quantify the effects of delays on passengers, i.e.“passenger inconvenience”. In the majority of the studies, re-scheduling approaches rely on historic data on aggregated passenger flows, which are independent of how the public transport services are re-scheduled. Few studies incorporate a dynamic passenger flow model that reacts based on how the transport services are re-scheduled. None of the reviewed studies use real-time passenger flow data in the decision-making process. Good estimations of the passenger flows based on historic data are argued to be sufficient since access to large amounts of passenger flow data and accurate prediction models is available today.

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  • 4.
    Lu, Zhiwen
    Blekinge Institute of Technology, Faculty of Engineering, Department of Spatial Planning.
    Cyklisters plats i staden: Implementering av cykelinfrastruktur i stadsgator2023Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Utvecklingen av cykelinfrastruktur i Sverige har pågått kontinuerligt sedan oljekriserna som inträffade under 1970-talet. Cykelförbindelser mellan bostad, arbete och centrum har utvecklats kontinuerligt och det möjliggjorde goda förutsättningar för cykel som transportmedel i människors vardag. Förtätning är rådande utvecklingstrend i städer sommöjliggör för ett ökat utbud av samhällsfunktioner lokalt och strävar efter enbefolkningsökning. Befolkningstätheten i städer ökar och avstånd mellan målpunkter blirkortare, stadsrummet blir mindre och är mer anpassad till människan samt cykel blir ett bättre transportmedel i städerna. Tidigare insatser på cykelförbindelser har emellertid inte fokuseratspå städernas lokala cykelnät i samma utsträckning, därför oftast saknar cykelinfrastruktur istadsgator som tillkom före oljekriserna och cyklister hänvisas till blandtrafiken. 

    I det här kandidatarbetet behandlar hur cykelinfrastruktur kan implementeras i en stadsgata som saknar separata trafikytor för cyklister. Till undersökningen har ett gestaltningsprojekt genomförts där ett gestaltningsförslag på implementering av cykelinfrastruktur påDrottninggatan i Karlskrona har lyft fram. Genom gestaltningsprojektet framgår det att gatans utformning och trafikflöde utgör en viktig grund till gestaltningen av cykelinfrastruktur. De identifierade lösningar för att möjliggöra trafikytor för cyklister är cykelbana, cykelfält samt gång- och cykelbana. Korsningar för cykeltrafiken som identifierades är cykelpassage och cykelöverfart. För att skapa en attraktiv och trafiksäkert stadsmiljö för cyklister har även cyklisters förutsättningar och behov identifierats.

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    Cyklisters plats i staden Implementering av cykelinfrastruktur i stadsgator
  • 5.
    Ny, Henrik
    Blekinge Institute of Technology, Faculty of Engineering, Department of Strategic Sustainable Development.
    Fast Ground Transport for Sweden: An Independent Overview for Strategic Investment Decisions2022Report (Refereed)
    Abstract [en]

    In 2020 and 2021 the Swedish debate about high speed ground transport intensified. Conflicting facts and opinions have been presented in a way that is quite inconsistent with a global sustainability perspective. It is important that all societal sectors can be sustainable together. This implies a need to model futures within sustainability constraints that take all essential sustainability related challenges into account. This study is an independent preliminary strategic decision support overview on fast ground transport - directed towards Swedish transport politicians and other high level decision makers within the transport sector. The study covered three steps:

    Step 1. Describing a Vision of the Desired Future. What societal goals and requirements does a future sustainable system for fast ground transport need to live up to?

    • It should meet customer expectations for “value for money” (e.g. speed, punctuality, comfort)
    • It should not contribute to systematic destruction of the environment (e.g. through emissions or physical destruction) or the social system (e.g. through health problems and discrimination).
    • It should be prudent with the societal economy and resource reserves.

    Step 2. Assessing the Current Situation in Relation to the Vision. It was found that fuels and infrastructure for travel with trains are much better than private cars or domestic flights from a sustainability perspective. But it was also found that the Swedish train system has a maintenance debt and is operating near its maximum capacity with frequent disturbancies and delays.

    Step 3. Reviewing Strategic Investment Choices. What are some potential alternative investment choices to close the gap between the current situation and a desired future and what are their likely economic, ecological and social effects? Assumptions and variations around three main alternatives were reviewed with the following results:

    • Scenario 1. Upgrade the Existing System. This may add some marginal benefits but may risk to not meet transport demands, to not protect the environment and to add societal costs.
    • Scenario 2. Build a New High Speed Rail (HSR) System. This would likely be better for transport demands and the societal economy but also have some environmental impacts.
    • Scenario 3. Build a New Magnetic Levitation (‘Maglev’) Train System. This could have the best potential to meet transport demands and to create benefits for the societal economy with the least environmental impacts.

    The main recommendation from this study is that Swedish transport politicans initiate a new independent investigation that compares at least the three future scenarios for high- speed ground transport suggested here and their potential effects for society at large and all modes of transport. If the initial findings of this study could be confirmed and acted upon then Sweden might become first in Europe to implement the new breakthrough Maglev technology in the transport sector. This could help Sweden to fulfil its goal to become one of the first fossil free welfare countries and also give the country great export opportunities.

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    Fast Ground Transport for Sweden
  • 6.
    Ramstedt, Linda
    et al.
    Sweco AB, SWE.
    Törnquist Krasemann, Johanna
    Blekinge Institute of Technology, Faculty of Computing, Department of Computer Science and Engineering.
    Davidsson, Paul
    Malmö Högskola, SWE.
    Movement of people and goods2013In: Understanding Complex Systems / [ed] Edmonds B., Meyer R. (eds), Springer Verlag , 2013, no 9783319669472, p. 705-720Chapter in book (Refereed)
    Abstract [en]

    Due to the continuous growth of traffic and transportation and thus an increased urgency to analyze resource usage and system behavior, the use of computer simulation within this area has become more frequent and acceptable. This chapter presents an overview of modeling and simulation of traffic and transport systems and focuses in particular on the imitation of social behavior and individual decision-making in these systems. We distinguish between transport and traffic. Transport is an activity where goods or people are moved between points A and B, while traffic is referred to as the collection of several transports in a common network such as a road network. We investigate to what extent and how the social characteristics of the users of these different traffic and transport systems are reflected in the simulation models and software. Moreover, we highlight some trends and current issues within this field and provide further reading advice. © 2017, Springer International Publishing AG.

  • 7.
    Salim, Jaafar
    et al.
    Blekinge Institute of Technology, Faculty of Engineering, Department of Spatial Planning.
    Palmborg, Gustaf
    Blekinge Institute of Technology, Faculty of Engineering, Department of Spatial Planning.
    Ett samhälle utan transportutsläpp: de mjuka trafikanternas stad2019Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Dagens planering tar stor hänsyn till infrastrukturen när ett nytt område ska växa fram. Gatunätet placeras ut för att sedankompletteras med byggnader, parker och andra funktioner för att säkerställa att tillgängligheten är så bra som den kan bli.Normen under de senaste hundra åren har varit att gatanshuvudfunktion ska främja bilens framkomlighet och detsynsättet har präglat städernas utformning och vad som anses vara en gata. Detta projekt tittar på hur ett område kan se ut om man bortser från bilen och baserar utformningen på ett mer hållbart transportmedel som cykeln, samt vad som krävs för att möjliggöra detta och kompensera för det som går förlorat till följd av bilens uteslutande. Detta arbete kommer fokusera på cykelns fördelar ur olika perspektiv och undersöka hur den kan ta större plats i gatuanvändningens hierarki.Utifrån forskningen kommer olika gestaltningsförslag att tas fram för att synliggöra vilka fysiska attribut som en cykelorienterad stad eller stadsdel behöver innefatta för att kunna erbjuda effektiva transportmöjligheter. För att vidare konkretisera och exemplifiera principerna kommer förslagen att implementeras i ett nytt utvecklingsområde i Kungens kurva söder om Stockholm. En funktionsblandad bebyggelse föreslås tillsammans med en infrastruktur som fokuserar på gång och cykelns framkomlighet snarare än bilens.

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    Ett samhälle utan transportutsläpp: de mjuka trafikanternas stad
  • 8.
    Söderbom, Oskar
    Blekinge Institute of Technology, Faculty of Engineering, Department of Spatial Planning.
    Förbifarters effekter på tätorter i Sverige: En flerfallstudie om påverkan av ändrade rörelsemönster och stadsutveckling2023Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Denna uppsats består av en flerfallstudie som tagits fram i ändamålet att utreda möjliga positiva och negativa konsekvenser i och med etablering av de nya förbifarterna i Söderköping och Bergkvara i Torsås kommun. Syftet med denna uppsats har varit att utreda huruvida förändrade rörelsemönster kan påverka planeringsförutsättningarna för svenska små och mellanstora tätorter. Det som har legat i fokus är centrum- och sällanköpshandeln, näringsliv, bostadsutveckling samt verksamhet- och industrietablering i städerna men främst vid förbifarterna. Det visade sig att kommunerna identifierat liknande konsekvenser men att Söderköping hade djupare analyser om den framtida planeringen. Bergkvara har därför större odds för att påverkas av negativa effekter, framför allt på den nuvarande handeln vid utvecklingen av nytt handelsområde som planeras ske mellan Torsås tätort och Bergkvara tätort. I kommunerna finns en önskan om att möjliggöra för bättre förutsättningar för kollektivtrafik och expressbussar vilket kan öka den regionala pendlingen. Däremot saknas information i form av enkäter eller intervjuer med boende eller verksamma i tätorterna för att ta reda på om det kommer leda till en ökning av människor som åker kollektivt. Vad som märkts utifrån tidigare forskning är att det i stället kan få motsatt effekt, att det sker en ökning i antalet biltrafikanter och att en minskad efterfrågan för kollektiv pendling sker.

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    Förbifarters effekter på tätorter i Sverige - En flerfallstudie om påverkan av ändrade rörelsemönster och stadsutveckling
  • 9. Trygg, Louise
    et al.
    Broman, Göran
    Blekinge Institute of Technology, School of Engineering, Department of Strategic Sustainable Development.
    França, Cesar-Levy
    Blekinge Institute of Technology, School of Engineering, Department of Strategic Sustainable Development.
    District Heating and CHP: A Vital Role for the Development towards a Sustainable Society?2012In: Latest trends in sustainable and green deveopment - Proceedings of the 3rd International Conference on Urban Sustainability, Cultural Sustainability, Green Development, Green Structures and Clean Cars (USCUDAR 12), WSEAS Press , 2012, p. 157-167Conference paper (Refereed)
    Abstract [en]

    In Sweden, district heating (DH) is quite well developed and is already mainly based on non-fossil fuels. Increased use of DH is therefore considered as a way of phasing out fossil energy for heating purposes. Furthermore, increased use of DH provides an increased basis for combined heat and power production (CHP). Considering that coal condensing is the marginal production of electricity in Europe, increased use of bio-fueled CHP leads to even greater reductions of global carbon dioxide (CO2) emissions. However, in a sustainable society, where there is no longer a systematic increase of CO2 (and no other sustainability problems), the benefits of DH are less obvious. The aim of this work is to explore the impact of DH and CHP in the development towards such a society. A local energy system is studied for five different time periods from 2010 to 2060 with different marginal technologies for electricity production. Results show that when the local energy utility co-operate with a local industry plant and invests in a new CHP plant for waste incineration the global CO2 emissions for the whole studied time period will be reduced with about 48 000 tonnes, which corresponds to over 100 % of the emissions from today’s system for the same time period. When considering that bio fuel is a scarce resource, and that the amount of CO2 emission linked to waste probably will be lower in sustainable society, the global CO2 emissions will be about 250% lower compared to the system of today. The studied DH related cooperation and introduction of CHP will reduce the system cost for the whole studied energy system with 2 500 MSEK for the studied period. In general, the results indicate that the modeled measures will not have any major advantages over other heating technologies in a sustainable society but that it can play a vital role for the development towards such a society.

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