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  • 101.
    Abrahamsson, Kenneth
    Luleå tekniska universitet.
    Recension av publikationen Work without boundaries. Psychological perspectives on the new working life författad av Michael Allvin, Gunnar Aronsson, Tom Hagström, Gunn Johansson och Ulf Lundberg2013In: Arbetsmarknad & Arbetsliv, ISSN 1400-9692, Vol. 19, no 4, p. 127-134Article, book review (Other academic)
  • 102. Abrahamsson, KH
    et al.
    Östberg, Anna-Lena
    Karlstad University, Faculty of Social and Life Sciences, Department of Health and Environmental Sciences.
    Eriksson, JS
    Hellström, MK
    Jönsson, K
    Wennström, JL
    Parodontal hälsa hos 19-åringar i Västra Götaland: En epidemiologisk tvärsnittsstudie2007Report (Refereed)
  • 103.
    Abrahamsson, Lena
    Luleå tekniska universitet.
    Bevara bredden i svensk arbetslivsforskning (debatt)2015In: Arbetsmarknad & Arbetsliv, ISSN 1400-9692, Vol. 21, no 2, p. 73-78Article in journal (Other academic)
    Abstract [sv]

    Det finns positiva tecken på att något ska hända med arbetslivsforskningens villkor. Mer bekymmersamt är att facket och arbetsgivarna vill återskapa ett nationellt centrum för arbetslivsforskning i Stockholm. Vi bör inte fortsätta att reproducera bilden av att svensk arbetslivsforskning försvann när Arbetslivsinstitutet lades ned. Det finns många starka forskargrupper på universiteten ute i landet. Nu är det viktigt att vi ser till att de positiva signalerna blir verklighet på ett klokt sätt så att bredden i arbetslivsforskningen säkras.

  • 104.
    Abrahamsson, Lena
    Institutionen för arbetsvetenskap, Luleå tekniska universitet.
    Recension av Kerstin Waldenström och Annika Härenstam, How are good and bad jobs created? Case studies of employee, managerial and organisational factors and processes (Arbetsliv i omvandling, 2008:4. Växjö universitet).2009In: Arbetsmarknad & Arbetsliv, ISSN 1400-9692, Vol. 15, no 2, p. 83-87Article in journal (Other (popular science, discussion, etc.))
  • 105.
    Abrahamsson, Lena
    Luleå tekniska universitet.
    Recension av Kerstin Waldenström och Annika Härenstams publikation How are good and bad jobs created? Case studies of employee, managerial and organisational factors and processes (Växjö: Växjö universitet, 2008)2009In: Arbetsmarknad & Arbetsliv, ISSN 1400-9692, Vol. 15, no 2, p. 83-87Article, book review (Other academic)
  • 106.
    Abrahamsson, Lena
    et al.
    Luleå tekniska universitet.
    Johansson, Jan
    Luleå tekniska universitet.
    Hundra år av långsamhet: Exposé över begreppet psykosocial arbetsmilljö2013In: Arbetsmarknad & Arbetsliv, ISSN 1400-9692, Vol. 19, no 2, p. 9-26Article in journal (Refereed)
    Abstract [sv]

    Artikeln innehåller en diskussion om olika begrepp, synsätt och användning av kunskaper om arbetsmiljö och hur det har förändrats över tid i Sverige. Det gäller exempelvis hur kunskaper om psykosocial arbetsmiljö används för att förstå och diskutera ohälsa, styrning och utveckling – för individer, grupper och organisationer. Artikeln innehåller också reflektioner kring trender, framtid och några (eventuella) tankefällor och/eller språngbrädor i dagens och morgondagens arbetsliv när det gäller arbetsmiljö. Titeln ”Hundra år av långsamhet” markerar en viss otålighet över att förändringstakten och förändringsviljan inte alltid är så hög.

  • 107.
    Abrahamsson, Lena
    et al.
    Luleå tekniska universitet.
    Johansson, Jan
    Luleå tekniska universitet.
    Andersson, Eira
    Luleå tekniska universitet.
    Från bergets djup till sjunde himlen2010In: Arbetsmarknad & Arbetsliv, ISSN 1400-9692, Vol. 16, no 4, p. 11-29Article in journal (Refereed)
    Abstract [sv]

    I Kirunagruvan kan vi under en period på 50 år följa förändringen av produktionsarbetet från ett tungt och farligt underjordsarbete till fjärrstyrning via modern teknik i en trygg kontorsmiljö. Syftet med artikeln är att reflektera över en kunskapsförvandling från äldre tiders hantverkskunnande med kroppsliga och tysta kunskaper till något nytt. I artikeln diskuterar vi hur individ och organisation skapar och återskapar kvalifikationer, identiteter och kön i mötet med ny teknik och nya organisationsformer.

  • 108. Abrahamsson, R.
    et al.
    Jakobsson, Andreas
    Stoica, P.
    A Capon-like Spatial Spectrum Estimator for Correlated Sources2004Conference paper (Refereed)
  • 109. Abu Bakar, Sakhinah
    et al.
    Taheri, Javid
    The University of Sydney, Australia.
    Zomaya, Albert
    The University of Sydney, Sydney, Australia.
    Characterization of essential proteins in proteins interaction networks2013In: Journal of Quality Measurement and Analysis, ISSN 1823-5670, Vol. 9, no 2, p. 11-26Article in journal (Refereed)
  • 110. Acedo, L.
    et al.
    Santos, A.
    Bobylev, Alexander
    Karlstad University, Faculty of Technology and Science, Department of Mathematics.
    On the derivation of a high-velocity tail from the Boltzmann-Fokker-Planck equation for shear flow2002In: J. Statist. Phys, Vol. 109:5-6Article in journal (Refereed)
  • 111.
    Achberger, Christine
    et al.
    Göteborgs universitet.
    Chen, Deliang
    Göteborgs universitet.
    Rayner, David
    Göteborgs universitet.
    Nyberg, Lars
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Centre for Climate and Safety.
    Persson, Gunn
    SMHI.
    Future rainfall and flooding in Sweden: an integrative project to support climate-adaptation actions2013Conference paper (Refereed)
  • 112. Ackelh, A.S.
    et al.
    Colombo, R.M.
    Hille, S.C.
    Muntean, Adrian
    Institute for Complex Molecular Systems & Centre for Analysis, Scientific computing and Applications, Eindhoven University of Technology.
    Preface to "modeling with measures"2015In: Mathematical Biosciences and Engineering, ISSN 1547-1063, E-ISSN 1551-0018, Vol. 12, no 2Article in journal (Refereed)
  • 113.
    Ackleh, Azmy S.
    et al.
    University of Louisiana at Lafayette, USA.
    Colombo, Rinaldo M.
    University of Brescia, Italy.
    Goatin, Paola
    Team ACUMES, INRIA, France.
    Hille, Sander
    Leiden University, The Netherlands.
    Muntean, Adrian
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Mathematics and Computer Science (from 2013).
    Mathematical modeling with measures2019In: Nieuw Archief voor Wiskunde, ISSN 0028-9825, Vol. 20, no September, p. 218-220Article in journal (Refereed)
  • 114.
    Adamczyk, Krzysztof
    et al.
    Department of Materials Science and Engineering, Trondheim, Norway.
    Søndenå, Rune
    Department for Solar Energy, IFE, Kjeller, Norway.
    Stokkan, Gaute
    Sintef Materials and Chemistry, Trondheim, Norway.
    Looney, Erin
    Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.
    Jensen, Mallory
    Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.
    Lai, Barry
    Advanced Photon Source, Argonne National Laboratory, Lemont, Illinois 60439, USA.
    Rinio, Markus
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Engineering and Physics (from 2013).
    Di Sabatino, Marisa
    Department of Materials Science and Engineering, NTNU, A. Getz vei 2B, NO-7491 Trondheim, Norway.
    Recombination activity of grain boundaries in high-performance multicrystalline Si during solar cell processing2018In: Journal of Applied Physics, ISSN 0021-8979, E-ISSN 1089-7550, Vol. 123, no 5, p. 1-6, article id 055705Article in journal (Refereed)
    Abstract [en]

    In this work, we applied internal quantum efficiency mapping to study the recombination activity of grain boundaries in High Performance Multicrystalline Silicon under different processing conditions. Wafers were divided into groups and underwent different thermal processing, consisting of phosphorus diffusion gettering and surface passivation with hydrogen rich layers. After these thermal treatments, wafers were processed into heterojunction with intrinsic thin layer solar cells. Light Beam Induced Current and Electron Backscatter Diffraction were applied to analyse the influence of thermal treatment during standard solar cell processing on different types of grain boundaries. The results show that after cell processing, most random-angle grain boundaries in the material are well passivated, but small-angle grain boundaries are not well passivated. Special cases of coincidence site lattice grain boundaries with high recombination activity are also found. Based on micro-X-ray fluorescence measurements, a change in the contamination level is suggested as the reason behind their increased activity.

  • 115.
    Adamczyk, Krzysztof
    et al.
    Department of Materials Science and Engineering, Trondheim, Norway.
    Søndenå, Rune
    Department for Solar Energy, IFE, Kjeller, Norway.
    You, Chang Chuan
    Department for Solar Energy, IFE, Kjeller, Norway.
    Stokkan, Gaute
    Sintef Materials and Chemistry, Trondheim, Norway.
    Lindroos, Jeanette
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Engineering and Physics (from 2013).
    Rinio, Markus
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Engineering and Physics (from 2013).
    Di Sabatino, Marisa
    Department of Materials Science and Engineering, Trondheim, Norway.
    Recombination Strength of Dislocations in High-Performance Multicrystalline/Quasi-Mono Hybrid Wafers During Solar Cell Processing2018In: Physica Status Solidi (a) applications and materials science, ISSN 1862-6300, E-ISSN 1862-6319, Vol. 215, no 2, article id 1700493Article in journal (Refereed)
    Abstract [en]

    Wafers from a hybrid silicon ingot seeded in part for High Performance Multicrystalline, in part for a quasi-mono structure, are studied in terms of the effect of gettering and hydrogenation on their final Internal Quantum Efficiency.The wafers are thermally processed in different groups – gettered and hydrogenated. Afterwards, a low temperature heterojunction with intrinsic thin layer cell process is applied to minimize the impact of temperature. Such procedure made it possible to study the effect of different processing steps on dislocation clusters in the material using the Light Beam Induced Current technique with a high spatial resolution. The dislocation densities are measuredusing automatic image recognition on polished and etched samples. The dislocation recombination strengths are obtained by a correlation of the IQE with the dislocation density according to the Donolato model. Different clusters are compared after different process steps. The results show that for the middle of the ingot, the gettering step can increase the recombination strength of dislocations by one order of magnitude. A subsequent passivation with layers containing hydrogen can lead to a decrease in the recombination strength to levels lower than in ungettered samples.

  • 116.
    Adams, Paul C.
    Karlstad University, Faculty of Arts and Social Sciences (starting 2013), Department of Geography, Media and Communication (from 2013). University of Texas at Austin, USA.
    Geographies of media and communication II: Arcs of communication2018In: Progress in Human Geography, ISSN 0309-1325, E-ISSN 1477-0288, Vol. 42, no 4, p. 590-599Article in journal (Refereed)
    Abstract [en]

    Some of the most perceptive contributions to the geographic study of media and communication have been in areas of landscapes studies and geohumanities. To bring landscape and geohumanities insights together more explicitly with communication and media, this progress report draws on George Revill’s concept of an ‘arc of sound’, expanding the concept’s scope to an arc of communication – a dynamic trajectory connecting one vantage point to another through various translations and shifts. It is a mix of integration and translation that forms its own space, place and time, integrating elements of embodied performance, multiple sensory modalities, temporality, absence and excess. Arcs of communication often depend on collaboration and can produce transformations of identity. The concept of the arc of communication enables discovery of numerous threads connecting landscape studies to geohumanities while deepening geographical understandings of media and communication.

  • 117.
    Adams, Paul C.
    Karlstad University, Faculty of Arts and Social Sciences (starting 2013), Department of Geography, Media and Communication (from 2013). Department of Geography and the Environment, University of Texas at Austin, USA.
    Migration Maps with the News: Guidelines for ethical visualization of mobile populations2018In: Journalism Studies, ISSN 1461-670X, E-ISSN 1469-9699, Vol. 19, no 4, p. 527-547Article in journal (Refereed)
    Abstract [en]

    Maps showing immigration into Europe are a potential source of journalistic bias. Limited time and funding to create maps of migration can lead to dependence on data from institutions dedicated to controlling migration, in effect promoting a logic of surveillance directed at immigrants rather than a logic of hospitality based on respect for human rights. There are organizational and logistical barriers to overcome if migration is to be portrayed in ways that support thoughtful, democratic, rights-based deliberation but efforts need to be made to map migration in ways that reveal the geographical experiences of individual immigrants including their movement paths and the risks they face. This article examines unusual maps of migration, drawing on examples from news media as well as from non-governmental organizations, research teams, book authors, private companies, and entertainment media based in several European countries. The examples provide a foundation for concrete recommendations regarding the responsible use of cartographic visualization as a component of immigration news.

  • 118.
    Adams, Paul C
    et al.
    University of Texas at Austin.
    Jansson, André
    Karlstad University, Faculty of Economic Sciences, Communication and IT.
    Communication Geography: A Bridge Between Disciplines2012In: Communication Theory, ISSN 1050-3293, E-ISSN 1468-2885, Vol. 22, no 3, p. 299-318Article in journal (Refereed)
  • 119. Adams, Robin
    et al.
    Fischer, Sally
    Pears, Arnold
    Börstler, Jürgen
    Boustedt, Jonas
    Dalenius, Peter
    Eken, Gunilla
    Heyer, Tim
    Jacobsson, Andreas
    Lindberg, Vanja
    Molin, Bemgt
    Moström, Jan-Erik
    Wiggberg, Mattias
    What is the Word for "Engineering" in Swedisch: Swedish Students Conceptions of their Discipline2007Report (Refereed)
  • 120.
    Adamson, Frank
    et al.
    Stanford University.
    Åstrand, Björn
    Karlstad University.
    Privatization or public investment?: A global question2016In: Global education reform: How privatization and public investment influence education outcomes / [ed] F. Adamson, B, Åstrand & L. Darling-Hammond, Routledge, 2016, 1, p. 1-15Chapter in book (Other academic)
  • 121.
    Adamson, Frank
    et al.
    Stanford University.
    Åstrand, BjörnKarlstad University, Faculty of Arts and Social Sciences (starting 2013), Department of Educational Studies (from 2013).Darling-Hammond, LindaStanford University.
    Global education reform: How privatization and public investment influence education outcomes2016Collection (editor) (Other academic)
  • 122.
    Addelyan Rasi, Hamideh
    et al.
    Linköping University.
    Moula, Alireza
    Karlstad University, Faculty of Social and Life Sciences.
    Puddephatt, Antony J.
    Canada.
    Timpka, Toomas
    Linköping University.
    Empowering newly married women in Iran: A new method of social work intervention that uses a client-directed problem-solving model in both group and individual sessions2013In: Qualitative Social Work, ISSN 1473-3250, E-ISSN 1741-3117, Vol. 12, no 6, p. 765-781Article in journal (Refereed)
    Abstract [en]

    We set out to assess the processes by which a personal empowerment-oriented intervention based on learning spaces and the Rahyab problem-solving model can help newly married women in Iran to gain more control over their life situations. Learning to use the problem-solving model independently was an important component of this seven months’ educational program. A descriptive field study design based on qualitative methods was employed for data collection and analysis. The analysis of these processes showed how, through group and individual interventions, these women could influence their intimate relationships by altering their thoughts, their management of emotions, and their overt behavior. We invite more research on how empowerment-oriented interventions can be used to support newly married women as a part of family educational programs.

  • 123.
    Addelyan Rasi, Hamideh
    et al.
    Linköping University.
    Moula, Alireza
    Karlstad University, Faculty of Social and Life Sciences, Department of Social Studies.
    Puddephatt, Antony J.
    Lakehead University, Canada.
    Timpka, Toomas
    Linkoping University.
    Empowering single mothers in Iran: Applying a problem-solving model in learning groups to develop participants' capacities to improve their lives2013In: British Journal of Social Work, ISSN 0045-3102, E-ISSN 1468-263X, Vol. 43, no 5, p. 1-20Article in journal (Refereed)
    Abstract [en]

    Since 2000, a problem-solving model has been taught to the Society for Protecting the Rights of the Child, and teachers and  students of social work in two universities in Iran. Since 2006, with the initiation of UNICEF, social workers, psychologists  and even some psychiatrists in Iran have been learning this model. In 2008, a group of researchers created an empowerment-oriented  psycho-social group and private intervention project to assess whether a group of Iranian single mothers could use this model, which was traditionally used by professionals only, to effectively and independently meet challenges in their own lives. Our results show that all women used the model effectively and, consequently, made more deliberate decisions to improve their life situations. Some of the women succeeded in finding a job and many improved their family relationships. This study suggests that empowerment-oriented social work can help many clients to achieve their goals, and that this psycho-social intervention project can be a useful model for social work in Iran and many other societies.

  • 124. Adolfsson, ET
    et al.
    Starrin, Bengt
    Karlstad University, Faculty of Social and Life Sciences, Department of Social Studies.
    Smide, B
    Wikblad, K
    Type 2 diabetic patients' experiences of two different educational approaches: A qualitative study2008In: International Journal of Nursing Studies, ISSN 0020-7489, E-ISSN 1873-491X, Vol. 45, no 27, p. 986-994Article in journal (Refereed)
  • 125. Affonso, Igor de Paiva
    et al.
    Karling, Leticia Cucolo
    Takemoto, Ricardo Massato
    Gomes, Luiz Carlos
    Nilsson, Per Anders
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Environmental and Life Sciences (from 2013). Karlstad University, Faculty of Social and Life Sciences, Department of Biology.
    Light-induced eye-fluke behavior enhances parasite life cycle2017In: Frontiers in Ecology and the Environment, ISSN 1540-9295, E-ISSN 1540-9309, Vol. 15, no 6, p. 340-341Article in journal (Refereed)
  • 126.
    Aflaki, Inga Narbutaite
    et al.
    Karlstad University, Faculty of Arts and Social Sciences (starting 2013), Department of Political, Historical, Religious and Cultural Studies.
    Petridou, Evangelia
    Mid-Sweden University.
    Miles, Lee
    Karlstad University, Faculty of Arts and Social Sciences (starting 2013), Department of Political, Historical, Religious and Cultural Studies. UK.
    Entrepreneurship in the polis: Understanding political entrepreneurship2015 (ed. 1)Book (Other academic)
    Abstract [en]

    Dynamics of entrepreneurship have attracted growing attention from scholars of political science, policy studies, public administration and planning, as well as more recently, from the realms of international relations and foreign policy analysis. Under the banner of political entrepreneurship, this volume considers and maps out conceptual approaches to the study of entrepreneurship drawn from these fields, discusses synergies, envisages new analytical tools and offers contemporary empirical case studies, illustrating the diverse political contexts in which entrepreneurship takes place in the polis. Drawing upon an international cast of senior academics and cutting edge young researchers, the volume takes a closer look at key aspects of political entrepreneurship, such as, defining political entrepreneurs, how it relates to change, decision-making and strategies, organizational arrangements, institutional rules, varying contexts and future research agendas. By highlighting the political aspects of entrepreneurship, the volume presents new exciting opportunities for understanding entrepreneurial activities at regional, national and international levels. The volume will be of particular relevance to scholars and students of political science, policy studies, public administration, planning, international relations and business studies as well as practitioners interested in the nexus and utility of entrepreneurship in the modern-day political world.

  • 127. Afroz, Barna
    et al.
    Moniruzzaman, Syed
    Karlstad University, Faculty of Social and Life Sciences, Department of Health and Environmental Sciences.
    Stark Ekman, Diana
    Karolinska institutet .
    Andersson, Ragnar
    Karlstad University, Faculty of Social and Life Sciences, Department of Health and Environmental Sciences.
    The impact of economic crisis on injury mortality – the case of the ‘Asian Crisis’2012In: Public Health, ISSN 0033-3506, Vol. 126, no 10, p. 836-838Article in journal (Refereed)
  • 128.
    Afzal, Zeeshan
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Mathematics and Computer Science.
    Towards Secure Multipath TCP Communication2017Licentiate thesis, comprehensive summary (Other academic)
    Abstract [en]

    The evolution in networking coupled with an increasing demand to improve user experience has led to different proposals to extend the standard TCP. Multipath TCP (MPTCP) is one such extension that has the potential to overcome few inherent limitations in the standard TCP. While MPTCP's design and deployment progresses, most of the focus has been on its compatibility. The security aspect is confined to making sure that the MPTCP protocol itself offers the same security level as the standard TCP.

    The topic of this thesis is to investigate the unexpected security implications raised by using MPTCP in the traditional networking environment. The Internet of today has security middle-boxes that perform traffic analysis to detect intrusions and attacks. Such middle-boxes make use of different assumptions about the traffic, e.g., traffic from a single connection always arrives along the same path. This along with many other assumptions may not be true anymore with the advent of MPTCP as traffic can be fragmented and sent over multiple paths simultaneously.

    We investigate how practical it is to evade a security middle-box by fragmenting and sending traffic across multiple paths using MPTCP. Realistic attack traffic is used to evaluate such attacks against Snort IDS to show that these attacks are feasible. We then go on to propose possible solutions to detect such attacks and implement them in an MPTCP proxy. The proxy aims to extend the MPTCP performance advantages to servers that only support standard TCP, while ensuring that intrusions can be detected as before. Finally, we investigate the potential MPTCP scenario where security middle-boxes only have access to some of the traffic. We propose and implement an algorithm to perform intrusion detection in such situations and achieve a nearly 90% detection accuracy. Another contribution of this work is a tool, that converts IDS rules into equivalent attack traffic to automate the evaluation of a middle-box.

  • 129.
    Afzal, Zeeshan
    et al.
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Mathematics and Computer Science (from 2013).
    Garcia, Johan
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Mathematics and Computer Science (from 2013).
    Lindskog, Stefan
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Mathematics and Computer Science (from 2013).
    Partial Signature Matching in an MPTCP World using Insert-only Levenshtein DistanceManuscript (preprint) (Other academic)
  • 130.
    Afzal, Zeeshan
    et al.
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Mathematics and Computer Science (from 2013).
    Garcia, Johan
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Mathematics and Computer Science (from 2013).
    Lindskog, Stefan
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Mathematics and Computer Science (from 2013).
    Brunström, Anna
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Mathematics and Computer Science (from 2013).
    Slice Distance: An Insert-Only Levenshtein Distance with a Focus on Security Applications2018In: Proceedings of NTMS 2018 Conference and Workshop, New York: IEEE, 2018, p. 1-5Conference paper (Refereed)
    Abstract [en]

    Levenshtein distance is well known for its use in comparing two strings for similarity. However, the set of considered edit operations used when comparing can be reduced in a number of situations. In such cases, the application of the generic Levenshtein distance can result in degraded detection and computational performance. Other metrics in the literature enable limiting the considered edit operations to a smaller subset. However, the possibility where a difference can only result from deleted bytes is not yet explored. To this end, we propose an insert-only variation of the Levenshtein distance to enable comparison of two strings for the case in which differences occur only because of missing bytes. The proposed distance metric is named slice distance and is formally presented and its computational complexity is discussed. We also provide a discussion of the potential security applications of the slice distance.

  • 131.
    Afzal, Zeeshan
    et al.
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Mathematics and Computer Science.
    Lindskog, Stefan
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Mathematics and Computer Science.
    Automated Testing of IDS Rules2015In: Software Testing, Verification and Validation Workshops (ICSTW), 2015 IEEE Eighth International Conference on, IEEE conference proceedings, 2015Conference paper (Refereed)
    Abstract [en]

    As technology becomes ubiquitous, new vulnerabilities are being discovered at a rapid rate. Security experts continuously find ways to detect attempts to exploit those vulnerabilities. The outcome is an extremely large and complex rule set used by Intrusion Detection Systems (IDSs) to detect and prevent the vulnerabilities. The rule sets have become so large that it seems infeasible to verify their precision or identify overlapping rules. This work proposes a methodology consisting of a set of tools that will make rule management easier.

  • 132.
    Afzal, Zeeshan
    et al.
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Mathematics and Computer Science.
    Lindskog, Stefan
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Mathematics and Computer Science.
    IDS rule management made easy2016In: Electronics, Computers and Artificial Intelligence (ECAI), 2016 8th International Conference on, IEEE conference proceedings, 2016Conference paper (Refereed)
    Abstract [en]

    Signature-based intrusion detection systems (IDSs) are commonly utilized in enterprise networks to detect and possibly block a wide variety of attacks. Their application in industrial control systems (ICSs) is also growing rapidly as modem ICSs increasingly use open standard protocols instead of proprietary. Due to an ever changing threat landscape, the rulesets used by these IDSs have grown large and there is no way to verify their precision or accuracy. Such broad and non-optimized rulesets lead to false positives and an unnecessary burden on the IDS, resulting in possible degradation of the security. This work proposes a methodology consisting of a set of tools to help optimize the IDS rulesets and make rule management easier. The work also provides attack traffic data that is expected to benefit the task of IDS assessment.

  • 133.
    Afzal, Zeeshan
    et al.
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Mathematics and Computer Science.
    Lindskog, Stefan
    Karlstad University, Faculty of Economic Sciences, Communication and IT, Department of Computer Science. Karlstad University, Faculty of Health, Science and Technology (starting 2013).
    Multipath TCP IDS Evasion and Mitigation2015In: Information Security: 18th International Conference, ISC 2015, Trondheim, Norway, September 9-11, 2015, Proceedings, Springer, 2015, Vol. 9290, p. 265-282Conference paper (Refereed)
    Abstract [en]

    The existing network security infrastructure is not ready for future protocols such as Multipath TCP (MPTCP). The outcome is that middleboxes are configured to block such protocols. This paper studies the security risk that arises if future protocols are used over unaware infrastructures. In particular, the practicality and severity of cross-path fragmentation attacks utilizing MPTCP against the signature-matching capability of the Snort intrusion detection system (IDS) is investigated. Results reveal that the attack is realistic and opens the possibility to evade any signature-based IDS. To mitigate the attack, a solution is also proposed in the form of the MPTCP Linker tool. The work outlines the importance of MPTCP support in future network security middleboxes.

  • 134.
    Afzal, Zeeshan
    et al.
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Mathematics and Computer Science (from 2013).
    Lindskog, Stefan
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Mathematics and Computer Science (from 2013).
    Brunström, Anna
    Karlstad University, Faculty of Economic Sciences, Communication and IT, Centre for HumanIT. Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Mathematics and Computer Science (from 2013).
    Lidén, Anders
    Towards Multipath TCP Aware Security Technologies2016In: 2016 8th IFIP International Conference onNew Technologies, Mobility and Security (NTMS), New York: IEEE, 2016, p. 1-8Conference paper (Refereed)
    Abstract [en]

    Multipath TCP (MPTCP) is a proposed extension to TCP that enables a number of performance advantages that have not been offered before. While the protocol specification is close to being finalized, there still remain some unaddressed challenges regarding the deployment and security implications of the protocol. This work attempts to tackle some of these concerns by proposing and implementing MPTCP aware security services and deploying them inside a proof of concept MPTCP proxy. The aim is to enable hosts, even those without native MPTCP support, to securely benefit from the MPTCP performance advantages. Our evaluations show that the security services that are implemented enable proper intrusion detection and prevention to thwart potential attacks as well as threshold rules to prevent denial of service (DoS) attacks.

  • 135.
    Afzal, Zeeshan
    et al.
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Mathematics and Computer Science.
    Lindskog, Stefan
    Karlstad University, Faculty of Economic Sciences, Communication and IT, Department of Computer Science. Karlstad University, Faculty of Health, Science and Technology (starting 2013).
    Lidén, Anders
    A Multipath TCP Proxy2015Conference paper (Refereed)
    Abstract [en]

    Multipath TCP (MPTCP) is an extension to traditionalTCP that enables a number of performance advantages,which were not offered before. While the protocol specificationis close to being finalized, there still remain some concernsregarding deployability and security. This paper describes theon going work to develop a solution that will facilitate thedeployment of MPTCP. The solution will not only allow non-MPTCP capable end-hosts to benefit from MPTCP performancegains, but also help ease the network security concerns that manymiddleboxes face due to the possibility of data stream beingfragmented across multiple subflows.

  • 136.
    Afzal, Zeeshan
    et al.
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Mathematics and Computer Science.
    Rossebø, Judith
    Integrated Operations, ABB AS, Norway.
    Chowdhury, Mohammad
    Talha, Batool
    ABB Corporate Research, ABB AS, Norway.
    A Wireless Intrusion Detection System for 802.11 networks2016In: PROCEEDINGS OF THE 2016 IEEE INTERNATIONAL CONFERENCE ON WIRELESS COMMUNICATIONS, SIGNAL PROCESSING AND NETWORKING (WISPNET), IEEE conference proceedings, 2016, p. 828-834Conference paper (Refereed)
    Abstract [en]

    Wireless local area networks (WLANs) deployment is increasing rapidly. At the same time, WLANs have become an attractive target for many potential attackers. In spite of that, the de facto standard used to implement most WLANs (IEEE 802.11) has what appear to be residual vulnerabilities related to identity spoofing. In this paper, a pragmatic study of two common attacks on the standard is conducted. These attacks are then implemented on test beds to learn attack behavior. Finally, novel attack signatures and techniques to detect these attacks are devised and implemented in a proof of concept Wireless Intrusion Detection System (WIDS).

  • 137.
    Agapi, Mesodiakaki
    et al.
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Mathematics and Computer Science (from 2013).
    Zola, Enrica
    UPC BarcelonaTECH, Barcelona Spain.
    Kassler, Andreas
    Karlstad University, Faculty of Economic Sciences, Communication and IT, Centre for HumanIT. Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Mathematics and Computer Science (from 2013).
    Joint User Association and Backhaul Routing for Green 5G Mesh Millimeter Wave Backhaul Networks2017In: Proceedings Of The 20Th Acm International Conference On Modelling, Analysis And Simulation Of Wireless And Mobile Systems, ASSOC COMPUTING MACHINERY, , 2017, p. 179-186Conference paper (Refereed)
    Abstract [en]

    With the advance of fifth generation (5G) networks, network density needs to grow significantly in order to meet the required capacity demands. A massive deployment of small cells may lead to a high cost for providing. ber connectivity to each node. Consequently, many small cells are expected to be connected through wireless links to the umbrella eNodeB, leading to a mesh backhaul topology. This backhaul solution will most probably be composed of high capacity point-to-point links, typically operating in the millimeter wave (mmWave) frequency band due to its massive bandwidth availability. In this paper, we propose a mathematical model that jointly solves the user association and backhaul routing problem in the aforementioned context, aiming at the energy efficiency maximization of the network. Our study considers the energy consumption of both the access and backhaul links, while taking into account the capacity constraints of all the nodes as well as the fulfillment of the service-level agreements (SLAs). Due to the high complexity of the optimal solution, we also propose an energy efficient heuristic algorithm (Joint), which solves the discussed joint problem, while inducing low complexity in the system. We numerically evaluate the algorithm performance by comparing it not only with the optimal solution but also with reference approaches under different traffic load scenarios and backhaul parameters. Our results demonstrate that Joint outperforms the state-of-the-art, while being able to find good solutions, close to optimal, in short time.

  • 138.
    Agapi, Mesodiakaki
    et al.
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Mathematics and Computer Science (from 2013).
    Zola, Enrica
    Univ Politecn Cataluna, Dept Network Engn, Barcelona, Spain.
    Kassler, Andreas
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Mathematics and Computer Science (from 2013).
    User Association in 5G Heterogeneous Networks with Mesh Millimeter Wave Backhaul Links2017In: 2017 IEEE 18th International Symposium on A World of Wireless, Mobile and Multimedia Networks (WoWMoM), IEEE, 2017Chapter in book (Other academic)
    Abstract [en]

    Fifth generation (5G) wireless networks will target at energy and spectrum efficient solutions to cope with the increasing demands in capacity and energy efficiency. To achieve this joint goal, dense networks of small cells (SCs) are expected to overlay the existing macro cells. In parallel, for the SC connection to the core network, a promising solution lies in a mesh network of high capacity millimeter wave backhaul (BH) links. In the considered 5G architecture, each SC is able to forward its BH traffic to the core network through alternative paths, thus offering high BIT network reliability. In this context, the joint problem of user association and HI routing becomes challenging. In this paper, we focus on this problem targeting at energy and spectrum efficient solutions. A low-complexity algorithm is proposed, which bases its user association and BIT routing decision i) on minimizing the spectrum resources to guarantee the user rate, so as to provide high spectrum efficiency, and ii) on minimizing both the access network and BH route power consumption to provide high energy efficiency. Our results show that our solution provides better trade-offs between energy and spectrum efficiency than the state-of-the-art in 3GPP scenarios.

  • 139.
    Ager, Bengt
    SLU.
    Skogsarbete förr, nu och i framtiden - och organisationsteoretisk förnyelse2014In: Arbetsmarknad & Arbetsliv, ISSN 1400-9692, Vol. 20, no 1, p. 79-91Article in journal (Refereed)
    Abstract [sv]

    Artikeln sammanfattar en undersökning av skogsarbetets förändring sedan 1900-talets början, under påverkan av en rationaliserings- och en humaniseringsprocess, med reflexioner över den gångna och framtida utvecklingen (Ager 2011, 2012, 2014a, 2014b). För tjugo år sedan inleddes en avhumanisering av arbetet som lett till rekryteringsproblem. Insatserna för att öka arbetets humankvalitet – önskvärt inte bara inom skogsbruket utan även generellt i det svenska arbetslivet – kan främjas av organisationsteoretisk förnyelse. Några tankar kring ett tidsanpassat humaniseringskoncept, som inkluderar viss språklig förnyelse, läggs fram.

  • 140.
    Agnemyr, Helena
    Karlstad University, Faculty of Economic Sciences, Communication and IT, Service Research Center.
    Främjar Starta företag-dagen kvinnors företagande?2010Report (Other (popular science, discussion, etc.))
  • 141.
    Agnemyr, Helena
    et al.
    Karlstad University, Faculty of Social and Life Sciences, Centre for Research on Regional Development.
    Dahlgren, Bengt
    Karlstad University, Faculty of Social and Life Sciences, Centre for Research on Regional Development.
    Gör Vågen!: Samhällsentreprenörskap med värmländska förtecken2011Report (Other academic)
    Abstract [sv]

    Rapporten handlar om samhällsentreprenörskap med värmländska förtecken. Idén om samhällsentreprenörer ges i rapporten sammanhang och perspektiv i en diskussion om tidsandan. Rapporten handlar både om teori och praktik. Den bygger på litteraturstudier och på samtal och dialoger med forskare, regionala aktörer och inte minst värmländska samhällsentreprenörer.

    Rapportens rubrik har hämtas från ett återberättande av ett möte om vad regeringen tänkte göra för näringslivet. Det förlösande svaret på en avslutande fråga om vad regeringen borde göra blev ”Gör vågen!”. Anekdoten berättades vid en av de två workshopar med värmländska samhällsentreprenörer som genomfördes under arbetet med rapporten.

    Tankar om samhällsentreprenörskapet syfte och sammanhang eller dess själ och djupare mening kan möjligen sammanfattas i två dikter av Tage Danielsson, nämligen;

    För den trötta samhällskroppen, vore kanske bästa boten, ifall tankarna från toppen kom från roten

    Och

    En droppe i livets älv har ingen kraft att flyta själv. Det ställs ett krav på varenda droppe. Hjälp till att hålla de andra oppe!

  • 142. Agustí, Ramón
    et al.
    Fazekas, Péter
    Gómez Barquero, David
    Lindskog, Stefan
    Karlstad University, Faculty of Economic Sciences, Communication and IT, Department of Computer Science. Karlstad University, Faculty of Economic Sciences, Communication and IT, Centre for HumanIT.
    Oliver, Miquel
    Pérez-Romero, Jordi
    Tralli, Velio
    NEWCOM DR7.2: First report on common framework/models and activities in Department 72005Report (Refereed)
    Abstract [en]

    This deliverable provides a description of the framework identified for the collaborative activities between different partners in the context of NEWCOM department 7 on QoS provision in heterogeneous wireless networks. The considered models, assumptions and expected results are pointed out for each activity. The deliverable also includes a report on the means to achieve the integration between the different partners

  • 143. Agustí, Ramón
    et al.
    Fazekas, Péter
    Lindskog, Stefan
    Karlstad University, Faculty of Economic Sciences, Communication and IT, Department of Computer Science. Karlstad University, Faculty of Economic Sciences, Communication and IT, Centre for HumanIT.
    Oliver, Miquel
    Pérez-Romero, Jordi
    Studer Ferreira, Lucio
    Tralli, Velio
    NEWCOM DR7.4: Final Report on the activities carried out in Department 72007Report (Refereed)
    Abstract [en]

    This deliverable constitutes the final report of all the activities that carried out in the framework of the NEWCOM department 7. It contains a description of the main technical achievements for each one of the activities in which the department has been organised togehter with the list of indicators reflecting the degree of integration that has been achieved among the different partners

  • 144.
    Ahammed, Farhan
    et al.
    The University of Sydney, Australia.
    Taheri, Javid
    The University of Sydney, Australia.
    Zomaya, Albert
    The University of Sydney, Sydney, Australia.
    Finding lower bounds of localization with noisy measurements using genetic algorithms2011In: Proceedings of the first ACM international symposium on Design and analysis of intelligent vehicular networks and applications (DIVANet '11), Miami, Florida, USA: Association for Computing Machinery (ACM), 2011, p. 47-54Conference paper (Refereed)
    Abstract [en]

    Vehicular Ad-Hoc Networks (VANETs) are wireless networks with mobile nodes (vehicles) which connect in an ad-hoc manner. Many vehicles use the Global Positioning System (GPS) to provide their locations. However the inaccuracy of GPS devices leads to some vehicles incorrectly assuming they are located at different positions and sometimes on different roads. VANETs can be used to increase the accuracy of each vehicle's computed location by allowing vehicles to share information regarding the measured distances to neighbouring vehicles. This paper looks at finding how much improvement can be made given the erroneous measurements present in the system. An evolutionary algorithm is used to evolve instances of parameters used by the VLOCI2 algorithm, also presented in this paper, to find instances which minimises the inaccuracy in computed locations. Simulation results show a definite improvement in location accuracy and lower bounds on how much improvement is possible is inferred.

  • 145. Ahammed, Farhan
    et al.
    Taheri, Javid
    The University of Sydney, Australia.
    Zomaya, Albert
    The University of Sydney, Sydney, Australia.
    Finding Lower Bounds of Localization with Noisy Measurements Using Genetic Algorithms2011Report (Refereed)
  • 146.
    Ahammed, Farhan
    et al.
    The University of Sydney, Sydney, Australia.
    Taheri, Javid
    The University of Sydney, Australia.
    Zomaya, Albert
    The University of Sydney, Sydney, Australia.
    Using simulated annealing to find lower bounds of localization with noisy measurements2012In: 2012 IEEE 26th International Parallel and Distributed Processing Symposium Workshops & PhD Forum (IPDPSW), IEEE conference proceedings, 2012, p. 601-608Conference paper (Refereed)
  • 147.
    Ahammed, Farhan
    et al.
    The University of Sydney, Australia.
    Taheri, Javid
    The University of Sydney, Australia.
    Zomaya, Albert
    The University of Sydney, Sydney, Australia.
    Ott, Max
    NICTA Australia Australian Technology Park.
    LICA: Improving Localization Given Noisy Data In GPS-Equipped VANETs Using Trilateration With Cluster Analysis2011Report (Refereed)
  • 148.
    Ahammed, Farhan
    et al.
    University of Sydney.
    Taheri, Javid
    The University of Sydney, Australia.
    Zomaya, Albert
    The University of Sydney, Sydney, Australia.
    Ott, Max
    NICTA.
    VLOCI: Using Distance Measurements to Improve the Accuracy of Location Coordinates in GPS-Equipped VANETs2012In: Mobile and Ubiquitous Systems: 7th International ICST Conference, MobiQuitous 2010, Sydney, Australia, December 6-9, 2010, Revised Selected Papers / [ed] Patrick Sénac, Max Ott, Aruna Seneviratne, Springer Berlin/Heidelberg, 2012, Vol. 73, p. 149-161Conference paper (Refereed)
  • 149.
    Ahammed, Farhan
    et al.
    The University of Sydney, Australia.
    Taheri, Javid
    The University of Sydney, Australia.
    Zomaya, Albert
    The University of Sydney, Sydney, Australia.
    Ott, Max
    NICTA Australia Australian Technology Park.
    VLOCI2: An Iterative Method To Improve Location Coordinates In GPS-Equipped VANETs in Multiple Lanes2011Report (Refereed)
  • 150.
    Ahammed, Farhan
    et al.
    The University of Sydney, Australia.
    Taheri, Javid
    The University of Sydney, Australia.
    Zomaya, Albert
    The University of Sydney, Sydney, Australia.
    Ott, Max
    Australian Technology Park, Australia.
    VLOCI2: An Iterative Method To Improve Location Coordinates In GPS-Equipped VANETs in Multiple Lanes2011Report (Refereed)
1234567 101 - 150 of 22000
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