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  • 101.
    Andriesse, Carin
    et al.
    Halmstad University, School of Information Technology.
    Edvinsson, Erika
    Halmstad University, School of Information Technology.
    Utvärdering av Business Intelligence system ur ett nytto-perspektiv: En studie om hur företag kan utvärdera nyttan av ett Business Intelligence system före och efter en implementation2016Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The growing amount of data in the world leads to an increasing amount of investments in BI-systems, which can support management and analysis of data. Businesses can experience benefits such as better control and decision base when they analyze their data. The evaluation of BI-systems has fallen behind at the same time as investments in these systems has increased. The difficulty in evaluating the soft and strategic benefits of a BI-system is one of the reasons for the lack of evaluations. Evaluation can give businesses a notion of which benefits that they have achieved and if further activities are needed to increase the benefits of the BI-system. A qualitative interview study has been carried out on large manufacturing businesses and consulting businesses, with the purpose to study how the evaluation of BI-system benefits are being done in practice. The study include evaluation before and after an implementation of a BI-system and results in recommendations. The result of the study shows that there can be differences in the way small and large manufacturing businesses use the BI-system and therefore also differences in how to perform the evaluation. The study has also established that more evaluations should be done after the BI-system has been implemented. Evaluation of parts that affect the possibility to achieve benefits as well as parts that affects the evaluation results in a more realistic evaluation, and a greater chance for the business to increase the benefits of their BI-system.  

  • 102.
    Anokhina, Ksenia
    et al.
    Avd. f. Fasta Tillståndets Fysik, Lunds Universitet, Lund, Sweden.
    Graczyk, Mariousz
    Avd. f. Fasta Tillståndets Fysik, Lunds Universitet, Lund, Sweden.
    Kvennefors, Anders
    Avd. f. Fasta Tillståndets Fysik, Lunds Universitet, Lund, Sweden.
    Montelius, Lars
    Avd. f. Fasta Tillståndets Fysik, Lunds Universitet, Lund, Sweden.
    Maximov, Ivan
    Avd. f. Fasta Tillståndets Fysik, Lunds Universitet, Lund, Sweden.
    Pettersson, Håkan
    Halmstad University, School of Information Technology, Halmstad Embedded and Intelligent Systems Research (EIS), MPE-lab.
    Metal-assisted chemical etching of Si for fabrication of nanoimprint stamps2011Conference paper (Refereed)
  • 103.
    Ansari, Jamshid
    Halmstad University, School of Business, Engineering and Science.
    Occurrence and Risk Assessment of Illicit Drugs in Wastewater Treatment Plants’ influent and effluent in Halland County, Sweden: Cocaine, MDMA, Amphetamine, Methamphetamine, and Cannabis.2018Independent thesis Advanced level (degree of Master (One Year)), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Recently, the presence of illicit drugs in effluents from Wastewater Treatment Plants (WWTPs) and the aquatic environment has raised concern over their possible negative effects on aquatic organisms. In this study, therefore ecotoxicological data was retrieved through a literature survey and by using the software ECOSAR. Predicted No Effect Concentrations (PNEC) of five types of illicit drugs and their metabolites including 1. Cocaine (COC) and its metabolite Benzoylecgonine (BE), 2. Amphetamine (AMPH), 3. Methamphetamine (METH), 4. Cannabis ((delta 9 tetrahydrocannabinol (THC), 11-Nor-9-carboxy-delta-9-tetrahydrocannabinol (THC-CCOH)) and 5. 3,4-Methylenedioxymethamphetamine (MDMA) for species of three trophic levels in aquatic ecosystems derived. Predicted Environmental Concentrations (PEC) of above-mentioned drugs in twelve WWTPs’ influent and two effluents in Halland County have been measured by Swedish Toxicology Research Center (SWETOX co). Acute and chronic Risk Quotients (RQ) of the mixture of illicit drugs based upon two novel approaches calculated for the effluents of two WWTPs. Wastewater treatment plant in Ängstorp found with better removal efficiency of above- mentioned illicit drugs and the lower total RQs of (0.01<MRQacute<0.1; MRQchronic = 0.13) in comparison with that of Västra Stranden with the total RQs of (0.1<MRQacute <1; MRQchronic = 1.4). Although the RQ of WWTPs’ effluent was higher than 1 in Västra Stranden, there was no potential of risk on aquatic organisms in surface waters receiving that effluent. AMPH and Cannabis found as the most degradable substances through the WWTPs with (90-100%) of removal efficiency. Moreover, the results revealed that Cannabis (THC-COOH) was the most hazardous illicit drug on aquatic species in case of acute and chronic effects while, in terms of genotoxicology, a mixture of Cocaine metabolites found the most dangerous mixture of illicit drugs on zebrafish embryos.

  • 104.
    Anstrén, Ludwig
    Halmstad University, School of Business, Engineering and Science.
    The Reliability of Cooper ́s Test in Subjects Between 28-60 Years of Age2015Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Background: Maximal oxygen uptake (VO2max) is a determinant of an individual’s ability to handle oxygen during maximal exercise. To measure VO2max expensive equipment and expertise personnel are required. To make the process of measuring VO2max easier, several submaximal and maximal tests have been created in which an estimation of VO2max could be made. Cooper’s 12-minute run (12MR) was created in 1968 and was tested on 115 military men with a mean age of 22 years. Since then the 12MR test has been re- tested and validated towards maximal treadmill tests on several occasions. When an age of 30 years is reached, VO2max starts to decline with 9-10 percent per decade but can be halted by different forms of exercise. With exercise of moderate to high intensity the decline can be halted by almost 50 percent. Objective: To investigate the reliability of estimated VO2max in a test retest scenario of Cooper ́s 12MR on a mixed healthy population between the ages of 28-60. Method: Nine women and five men, healthy subjects with a mean age of 43 ± 8 participated in the present study. A test retest of Cooper ́s 12MR took place with a minimum of seven days between tests. The subjects had to run as many laps as possible on the track during a 12-minute period. Finished laps were then counted and the fraction of the last lap was measured with a measuring wheel and then added to the total distance. To estimate the subjects’ VO2max Cooper ́s table was used. Results: The single measure Intraclass correlation (ICC) that was found, between the estimated VO2max made from the initial test to the retest on Cooper ́s 12MR, was 0.979. ICC showed a small error variance correlation between the tests and was close to the optimal correlation of 1.0. Conclusion: A standardized protocol for performing Cooper ́s 12MR showed good repeatability for estimating VO2max in two separate tests for a mixed population between 28 to 60 years of age. 

  • 105.
    Antczak, Magdalena
    et al.
    Halmstad University, School of Information Science, Computer and Electrical Engineering (IDE), Halmstad Embedded and Intelligent Systems Research (EIS), MPE-lab.
    Leniec, Marta
    Halmstad University, School of Information Science, Computer and Electrical Engineering (IDE), Halmstad Embedded and Intelligent Systems Research (EIS), MPE-lab.
    Pricing and Hedging of Defaultable Models2011Independent thesis Advanced level (degree of Master (One Year)), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Modelling defaultable contingent claims has attracted a lot of interest in recent years, motivated in particular by the Late-2000s Financial Crisis. In several papers various approaches on the subject have been made. This thesis tries to summarize these results and derive explicit formulas for the prices of financial derivatives with credit risk. It is divided into two main parts. The first one is devoted to the well-known theory of modelling the default risk while the second one presents the results concerning pricing of the defaultable models that we obtained ourselves.

  • 106.
    Arakelyan, Arsen
    et al.
    Institute of Molecular Biology, National Academy of Sciences of the Republic of Armenia (NAS RA), Yerevan, Armenia.
    Zakharyan, Roksana
    Institute of Molecular Biology, National Academy of Sciences of the Republic of Armenia (NAS RA), Yerevan, Armenia.
    Hambardzumyan, Marina
    Halmstad University, School of Business, Engineering and Science, Biological and Environmental Systems (BLESS).
    Petrkova, Jana
    Laboratory of Immunogenomics and Immunoproteomics, Institute of Molecular and Translational Medicine, Medical Faculty of Palacky University, Olomouc, Czech Republic.
    Olsson, M. Charlotte
    Halmstad University, School of Business, Engineering and Science, Biological and Environmental Systems (BLESS), Biomechanics and Biomedicine.
    Petrek, Martin
    Laboratory of Immunogenomics and Immunoproteomics, Institute of Molecular and Translational Medicine, Medical Faculty of Palacky University, Olomouc, Czech Republic.
    Boyajyan, Anna
    Institute of Molecular Biology, National Academy of Sciences of the Republic of Armenia (NAS RA), Yerevan, Armenia.
    Functional Genetic Polymorphisms of Monocyte Chemoattractant Protein 1 and C-C Chemokine Receptor Type 2 in Ischemic Stroke2014In: Journal of Interferon and Cytokine Research, ISSN 1079-9907, E-ISSN 1557-7465, Vol. 34, no 2, p. 100-105Article in journal (Refereed)
    Abstract [en]

    Recent findings indicated that monocyte chemoattractant protein 1 (MCP1) and its C-C chemokine receptor type 2 (CCR2) play a key role in ischemic stroke (IS) progression. This study was aimed at evaluating the potential association of the MCP1 gene (MCP1) rs1024611 (-2518 A>G) and CCR2 gene (CCR2) rs1799864 (V64I; 190 G>A) functional single nucleotide polymorphisms (SNPs) with IS in the Armenian population. For the purpose of this study, genomic DNA samples of 100 patients with the first-episode IS and 115 healthy subjects (controls) were genotyped for the selected SNPs using a polymerase chain reaction with sequence-specific primers. The results obtained demonstrated that while the CCR2 rs1799864 SNP genotypes were equally distributed among patients and controls, the frequency and carriage rate of the of the MCP1 rs1024611*G minor allele were higher in patients. While a potential association between IS and CCR2 rs1799864 SNP was evaluated for the first time, the latest finding was in agreement with the earlier data reported for some other populations. In summary, this study revealed no association of CCR2 rs1799864 SNP with IS, and a positive association between G minor allele of MCP1 rs1024611 SNP and IS in the Armenian population. Based on the present and earlier reported data, we concluded that the minor G allele of the MCP1 rs1024611 SNP might be considered a risk factor for IS.

  • 107.
    Aramrattana, Maytheewat
    Halmstad University, School of Information Technology, Halmstad Embedded and Intelligent Systems Research (EIS), Centre for Research on Embedded Systems (CERES). The Swedish National Road and Transport Research Institute (VTI), Göteborg, Sweden.
    A Simulation-Based Safety Analysis of CACC-Enabled Highway Platooning2018Doctoral thesis, comprehensive summary (Other academic)
    Abstract [en]

    Cooperative Intelligent Transport Systems (C-ITS) enable actors in the transport systems to interact and collaborate by exchanging information via wireless communication networks. There are several challenges to overcome before they can be implemented and deployed on public roads. Among the most important challenges are testing and evaluation in order to ensure the safety of C-ITS applications.

    This thesis focuses on testing and evaluation of C-ITS applications with regard to their safety using simulation. The main focus is on one C-ITS application, namely platooning, that is enabled by the Cooperative Adaptive Cruise Control (CACC) function. Therefore, this thesis considers two main topics: i) what should be modelled and simulated for testing and evaluation of C-ITS applications? and ii) how should CACC functions be evaluated in order to ensure safety?

    When C-ITS applications are deployed, we can expect traffic situations which consist of vehicles with different capabilities, in terms of automation and connectivity. We propose that involving human drivers in testing and evaluation is important in such mixed traffic situations. Considering important aspects of C-ITS including human drivers, we propose a simulation framework, which combines driving-, network-, and traffic simulators. The simulation framework has been validated by demonstrating several use cases in the scope of platooning. In particular, it is used to demonstrate and analyse the safety of platooning applications in cut-in situations, where a vehicle driven by a human driver cuts in between vehicles in platoon. To assess the situations, time-to-collision (TTC) and its extensions are used as safety indicators in the analyses.

    The simulation framework permits future C-ITS research in other fields such as human factors by involving human drivers in a C-ITS context. Results from the safety analyses show that cut-in situations are not always hazardous, and two factors that are the most highly correlated to the collisions are relative speed and distance between vehicles at the moment of cutting in. Moreover, we suggest that to solely rely on CACC functions is not sufficient to handle cut-in situations. Therefore, guidelines and standards are required to address these situations properly.

  • 108.
    Aramrattana, Maytheewat
    et al.
    Halmstad University, School of Information Technology, Halmstad Embedded and Intelligent Systems Research (EIS), Centre for Research on Embedded Systems (CERES).
    Detournay, J.
    Swedish National Transport Research Institute, Gothenburg, SE-402 78, Sweden.
    Englund, Cristofer
    Halmstad University, School of Information Technology, Halmstad Embedded and Intelligent Systems Research (EIS), CAISR - Center for Applied Intelligent Systems Research.
    Frimodig, Viktor
    Halmstad University, School of Information Technology.
    Jansson, Oscar Uddman
    Swedish National Transport Research Institute, Gothenburg, SE-402 78, Sweden.
    Larsson, Tony
    Halmstad University, School of Information Technology, Halmstad Embedded and Intelligent Systems Research (EIS), Centre for Research on Embedded Systems (CERES).
    Mostowski, Wojciech
    Halmstad University, School of Information Technology, Halmstad Embedded and Intelligent Systems Research (EIS), Centre for Research on Embedded Systems (CERES).
    Díez Rodríguez, Víctor
    Halmstad University, School of Information Technology.
    Rosenstatter, Thomas
    Halmstad University, School of Information Technology.
    Shahanoor, Golam
    Halmstad University, School of Information Technology.
    Team Halmstad Approach to Cooperative Driving in the Grand Cooperative Driving Challenge 20162018In: IEEE transactions on intelligent transportation systems (Print), ISSN 1524-9050, E-ISSN 1558-0016, Vol. 19, no 4, p. 1248-1261Article in journal (Refereed)
    Abstract [en]

    This paper is an experience report of team Halmstad from the participation in a competition organised by the i-GAME project, the Grand Cooperative Driving Challenge 2016. The competition was held in Helmond, The Netherlands, during the last weekend of May 2016. We give an overview of our car’s control and communication system that was developed for the competition following the requirements and specifications of the i-GAME project. In particular, we describe our implementation of cooperative adaptive cruise control, our solution to the communication and logging requirements, as well as the high level decision making support. For the actual competition we did not manage to completely reach all of the goals set out by the organizers as well as ourselves. However, this did not prevent us from outperforming the competition. Moreover, the competition allowed us to collect data for further evaluation of our solutions to cooperative driving. Thus, we discuss what we believe were the strong points of our system, and discuss post-competition evaluation of the developments that were not fully integrated into our system during competition time. © 2000-2011 IEEE.

  • 109.
    Aramrattana, Maytheewat
    et al.
    Halmstad University, School of Information Technology, Halmstad Embedded and Intelligent Systems Research (EIS), Centre for Research on Embedded Systems (CERES). The Swedish National Road and Transport Research Institute (VTI), Göteborg, Sweden.
    Englund, Cristofer
    Halmstad University, School of Information Technology, Halmstad Embedded and Intelligent Systems Research (EIS), CAISR - Center for Applied Intelligent Systems Research. RISE Viktoria, Göteborg, Sweden.
    Larsson, Tony
    Halmstad University, School of Information Technology, Halmstad Embedded and Intelligent Systems Research (EIS), Centre for Research on Embedded Systems (CERES).
    Jansson, Jonas
    The Swedish National Road and Transport Research Institute (VTI), Linköping, Sweden.
    Nåbo, Arne
    The Swedish National Road and Transport Research Institute (VTI), Göteborg, Sweden.
    Safety Evaluation of Highway Platooning Under a Cut-In Situation Using Simulation2018In: IEEE transactions on intelligent transportation systems (Print), ISSN 1524-9050, E-ISSN 1558-0016Article in journal (Refereed)
    Abstract [en]

    Platooning refers to an application, where a group of connected and automated vehicles follow a lead vehicle autonomously, with short inter-vehicular distances. At merging points on highways such as on-ramp, platoons could encounter manually driven vehicles, which are merging on to the highways. In some situations, the manually driven vehicles could end up between the platooning vehicles. Such situations are expected and known as “cut-in” situations. This paper presents a simulation study of a cut-in situation, where a platoon of five vehicles encounter a manually driven vehicle at a merging point of a highway. The manually driven vehicle is driven by 37 test persons using a driving simulator. For the platooning vehicles, two longitudinal controllers with four gap settings between the platooning vehicles, i.e. 15 meters, 22.5 meters, 30 meters, and 42.5 meters, are evaluated. Results summarizing cut-in behaviours and how the participants perceived the situation are presented. Furthermore, the situation is assessed using safety indicators based on time-to-collision.

  • 110.
    Arkå Nilsson, Joakim
    Halmstad University, School of Education, Humanities and Social Science.
    Programmering som moment i gymnasiematematiken: En intervjustudie med berörda lärare2018Independent thesis Advanced level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    I takt med att allt större delar av vår vardag blir digitaliserad finns ett behov att utbilda medborgare i syfte att stärka deras digitala kompetens. Som ett led i detta arbete har det beslutats att programmering skall införas som metod för problemlösning inom matematikämnet på gymnasiet. Eftersom programmering inte tidigare har varit en del av det centrala innehållet i matematik är det många lärare idag som saknar kompetens inom programmering.

    Syftet med det här arbetet är att undersöka hur några lärare i en medelstor kommun upplever implementeringen av programmering i matematikkurserna i gymnasiet. För att få ett underlag att analysera valdes kvalitativ intervju, där fyra lärare valde att ställa upp.

    Resultatet av studien visar att det i dagsläget finns många frågetecken kring hur programmering skall implementeras i matematikämnet. Några av lärarna är negativt inställda och menar att de inte tror att det finns tid för programmering utöver de andra momenten i matematikkurserna som också skall behandlas under lektionstiden. Andra lärare anser att det kan träna elevernas förmåga att lösa problem, om det genomförs på rätt sätt i undervisningen. Undersökningen visar att det finns skilda åsikter om vad begreppet programmering har för innebörd. Skolverkets definition av programmering innefattar problembeskrivning, val av lösningsmetod, prövning och omprövning och även dokumentation av arbetsprocessen. För många av informanterna är programmering synonymt med att skriva kod. Denna skillnad i föreställning är av betydelse eftersom det i stor grad påverkar hur arbetet i klassrummet kommer se ut.

  • 111.
    Arkå Nilsson, Joakim
    et al.
    Halmstad University, School of Education, Humanities and Social Science.
    Hallberg, Henric
    Halmstad University, School of Education, Humanities and Social Science.
    Diabetes typ 2, hjärt- kärlsjukdomar och kost i en läromedelskontext: En litteraturstudie om livsstilssjukdomar och kostråd i fyra läromedel för gymnasiet2019Independent thesis Advanced level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Inledning. Dålig kosthållning kan medföra negativa konsekvenser för individens hälsa senare i livet. En individ som har kunskaper om kost är också bättre utrustad att fatta goda beslut. Vi har därför valt att undersöka vilka aspekter inom livsstilssjukdomar, som typ 2-diabetes och hjärt- och kärlsjukdomar, som beskrivs samt vilka kostråd som presenteras i ett antal läromedel inom ämnet Naturkunskap på gymnasiet.

    Metod. Vi har gjort en innehållsanalys av fyra olika läromedel. Analysen resulterade i ett antal teman som belyser olika aspekter av livsstilssjukdomar och kostråd. De teman vi hittade var “forskningsläget och orsaker till sjukdom”, “förebyggande åtgärder”, “konsekvenser” och “allmänna kostråd”.

    Tidigare forskning. Forskningen vi har tagit del av visar att en diet som är rik på livsmedel från växtriket och som samtidigt begränsar intaget av fett är bra för dels de som ligger i riskzonen att drabbas av hjärt- kärlsjukdom eller typ 2-diabetes, dels personer med diagnostiserad sjukdom. Växtbaserad kost hanterar dessutom samtliga kostrelaterade riskfaktorer för båda livsstilssjukdomarna, vilket är önskvärt med tanke på att prevention utifrån enstaka riskfaktorer inte har samma effekt som ett helhetsgrepp. Även behovet av förebyggande arbete bland barn och skolungdomar poängteras, då utvecklingen av sjukdomarna startar tidigt i livet.

    Resultat. Vår studie visar att läromedelsförfattare väljer att fokusera på olika aspekter av livsstilssjukdomarna med skillnader avseende orsak, möjlighet till förebyggande och konsekvenser. Kostråden varierar också, där fokus läggs på alltifrån sunt förnuft och tallriksmodellen till Nordiska Näringsrekommendationer. Gemensamt för majoriteten av de analyserade läromedlen är dock att de i någon bemärkelse rekommenderar enskilda näringsämnen såsom essentiella aminosyror, kostfibrer, kolhydrater, omättade fettsyror och protein samt livsmedel i form av fisk, frukt, fullkornsprodukter, grönsaker och olja. Vad som bör undvikas är för mycket fett, socker, salt, mättat fett, tillsatser, sötningsmedel samt tomma kalorier som läsk och godis. Likheter med WHO:s kostråd syns. När andelen fett av kaloriintaget nämns, anges 25-40 E%.

    Slutsats och Diskussion. Referenshanteringen i läromedlen uteblir, varför flera av författarnas påståenden blir svåra att bemöta. Nyttan av en vegetarisk diet behandlas heller inte. Istället framställs vegetariska kostmönster som något svårt eller riskabelt − ofta med utgångspunkt i felaktiga beskrivningar om aminosyrainnehåll eller andra enskilda näringsämnen. En fettsnål kost rekommenderas heller inte och skillnaden mellan intaget på 25-40 E% i läromedel utgör en kontrast till de ca 10 E% som avhandlas i tidigare forskning.

    Didaktiska implikationer. I rollen som lärare blir det viktigt att komplettera den bild som läromedlen förmedlar. Resultatet visar på en fragmenterad bild av kost i relation till hälsa och lärarens ansvar blir att brygga klyftan mellan läromedel och forskning.

  • 112.
    Aronsson, Erik
    Halmstad University, School of Information Technology.
    Biometric Authentication and Penetration of Smartphones2018Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    This study aims to examine the function and vulnerabilities of biometric systemsintegrated in smartphones, as well as techniques for circumventing the securityof these systems. These techniques are then used against a selection of smart-phones in order to gauge the resilience of their biometric security. The function,vulnerabilities, and techniques associated with these systems are compiled usinga literature study of published papers and books on the subject. The performedexperiments apply these techniques in the form of presentation attacks directed atthe fingerprint-, face- and iris recognition systems of the examined smartphones.The result of the experiments showed significant differences between the differentsmartphones, where some exhibited flawless security and others showed significantsecurity flaws. Both fingerprint and face recognition systems were successfullycircumvented, while none of the iris recognition systems were breached. No clearlink could be observed between the cost of the device and success rate of attacks,while only devices using the Android operating system were breached. The resultsundeniably showed that some smartphones are vulnerable to the employed tech-niques. It also showed that some of the tested devices had managed to implementmeasures to counteract the applied presentation attacks. The root cause of thevulnerabilities showcased in the experiment is due to the fact that biometric traitscan be copied and reproduced, highlighting a basic flaw of such systems.

  • 113. Aronsson, H.
    et al.
    Almqvist, J.
    Sundqvist, C.
    Timko, M.P.
    Dahlin, Clas
    Halmstad University, School of Business, Engineering and Science, Biological and Environmental Systems (BLESS), Plant Cell Biology: Energy transduction in plant cells.
    Characterization of the plastid import reaction of the pea NADPH-protochlorophyllide oxidoreductase (POR)1998In: The Chloroplast: From Molecular Biology to Biotechnology / [ed] Joan H. Argyroudi-Akoyunoglou, Horst Senger, New York: Springer-Verlag , 1998, p. 167-170Conference paper (Refereed)
    Abstract [en]

    NADPH: protochlorophyllide (POR) is a vital enzyme in the biosynthesis of chlorophyl where it catalyzes the reduction of Pchlide into Chlide in a light-dependent manner. POR is nucleus-encoded and imported into the plastids where it is found at the inner membranes. Together with its substrate and the co-factor NADPH it forms a ternary complex which is needed for catalytical activity. The anomaly of a decreasing POR level during active chlorophyll synthesis was cleared with the discovery of two different POR proteins, POR-A and POR-B, in barley and Arabidopsis thaliana. During greening, POR-A is negatively regulated by light both at transcriptional and proteolytical levels. In addition, the import of POR-A, but not POR-B, has been suggestedto require Pchlide in order to be translocated into the plastid. In this respect, POR-A differs from other known nucleus-encoded plastid proteins, and as it appears, this requirements represents a novel and exclusive import characteristic. In pea, only one POR gene has been found indicating that the situation for the regulation of POR import and accumulation is far from clear. We here present a characterization of the import conditions of the pea POR, including the potentional role of Pchlide inthe translocation step.

  • 114.
    Aronsson, Henrik
    et al.
    Department of Biology, Leicester University, Leicester, United Kingdom.
    Sundqvist, Christer
    Department of Plant Physiology, Göteborg University, Göteborg, Sweden.
    Dahlin, Clas
    Halmstad University, School of Business, Engineering and Science, Biological and Environmental Systems (BLESS), Plant Cell Biology: Energy transduction in plant cells.
    POR – import and membrane association of a key element in chloroplast development2003In: Physiologia Plantarum: An International Journal for Plant Biology, ISSN 0031-9317, E-ISSN 1399-3054, Vol. 118, no 1, p. 1-9Article in journal (Refereed)
    Abstract [en]

    The development of proplastids or etioplasts to chloroplast is visualized by the accumulation of chlorophyll in leaves of higher plants. The biosynthesis of chlorophyll includes a light-dependent reduction of protochlorophyllide (Pchlide) to chlorophyllide (Chlide). This light-dependent step is catalysed by the nucleus-encoded NADPH:Pchlide oxidoreductase (POR, EC 1.6.99.1). POR is active within plastids and therefore has to be translocated over the plastid envelope membranes. The import of chloroplast proteins seems to follow a general import pathway using translocons at the outer and inner envelope membrane. POR cross-linking to Toc75, one of the major translocon components at the outer envelope membrane, indicates its use of the general import pathway. However, since variations exist within the so-called general import pathway one has to consider previous data suggesting a novel totally Pchlide-dependent import pathway of one POR isoform, PORA. The suggested Pchlide dependency of POR import is discussed since recent observations contradict this idea. In the stroma the POR transit peptide is cleaved off and the mature POR protein is targeted to the plastid inner membranes. The correct and stable association of POR to the membrane requires the cofactor NADPH. Functional activity of POR calls for formation of an NADPH–Pchlide–POR complex, a formation that probably takes place after the membrane association and is dependent on a phosphorylation reaction.

  • 115.
    Aronsson, Henrik
    et al.
    Department of Biology, Leicester University, United Kingdom.
    Sundqvist, Christer
    Department of Plant Physiology, Göteborg University, Göteborg, Sweden.
    Dahlin, Clas
    Halmstad University, School of Business and Engineering (SET), Biological and Environmental Systems (BLESS), Plant Cell Biology: Energy transduction in plant cells.
    POR hits the road: import and assembly of a plastid protein2003In: Plant Molecular Biology, ISSN 0167-4412, E-ISSN 1573-5028, Vol. 51, no 1, p. 1-7Article in journal (Refereed)
    Abstract [en]

    The biosynthesis of chlorophyll is a strictly light-dependent multistep process in higher plants. The light-dependent step is catalysed by NADPH:protochlorophyllide oxidoreductase (POR, EC.1.6.99.1), which reduces protochlorophyllide (Pchlide) to chlorophyllide (Chlide). POR is nucleus-encoded and post-translationally imported into plastids. It has been proposed that the import of a POR protein isozyme (PORA) is totally dependent on Pchlide and uses a novel import pathway. This proposal is based on findings that PORA import only occurs in the presence of Pchlide and that the presence of overexpressed precursor of Rubisco small subunit (pSS), a protein which is known to use the general import pathway, does not outcompete PORA import. Another study demonstrated that POR precursor protein (pPOR) can be cross-linked to one of the components in the translocation machinery, Toc75, in the absence of Pchlide, and that its import can be outcompeted by the addition of the pSS. This indicates that pSS and pPOR may use the same translocation mechanism. Thus, POR does not necessarily need Pchlide for import – which is in contrast to earlier observations – and the exact POR import mechanism remains unresolved. Once in the stroma, the POR transit peptide is cleaved off and the mature POR protein is associated to the plastid inner membranes. Formation of the correct membrane–associated, thermolysin-protected assembly is strictly dependent of NADPH. As a final step, the formation of the NADPH-Pchlide-POR complex occurs. When POR accumulates in the membranes of proplastids, an attraction of monogalactosyl diacylglycerol (MGDG) can occur, leading to the formation of prolamellar bodies (PLBs) and the development of etioplasts in darkness.

  • 116.
    Aronsson, Henrik
    et al.
    Department of Plant Physiology, Göteborg University, Göteborg, Sweden.
    Sundqvist, Christer
    Department of Plant Physiology, Göteborg University, Göteborg, Sweden.
    Timko, Michael P.
    Department of Biology, University of Virginia, Charlottesville, United States.
    Dahlin, Clas
    Halmstad University, School of Business, Engineering and Science, Biological and Environmental Systems (BLESS).
    Characterisation of the assembly pathway of the pea NADPH:protochlorophyllide (Pchlide) oxidoreductase (POR), with emphasis on the role of its substrate, Pchlide2001In: Physiologia Plantarum: An International Journal for Plant Biology, ISSN 0031-9317, E-ISSN 1399-3054, Vol. 111, no 2, p. 239-244Article in journal (Refereed)
    Abstract [en]

    The homologous import and membrane association of a key enzyme for chlorophyll biosynthesis, the NADPH:protochlorophyllide (Pchlide) oxidoreductase (PAR, EC 1.6.99.1) into pea chloroplasts was investigated in vitro. The co-factor, NADPH, decreased binding of the precursor protein (pPOR) to the envelope membranes in the presence of ATP. The decrease of the binding reaction with NADPH was not observed with the precursor of the small subunit of Rubisco (pSS). To investigate possible substrate-dependency for the import reaction, internal Pchlide concentrations in the plastids were raised by either an addition of ÎŽ-aminolevulinic acid to isolated plastids or etiolation of the seedlings prior to plastid isolation. Increased amounts of plastid-bound Pchlide gave no observable differences in POR import. The capacity of POR and 11 different POR mutants, carrying charged-to-alanine scanning substitutions, to form a catalytically active POR-Pchlide-NADPH complex and to associate with the thylakoid membranes in a protease-resistant way were tested. Wild-type POR, as well as the mutants with charge substitutions in the N-terminal region of the protein, exhibited higher catalytic activity than the POR mutants carrying substitutions in the C-terminal region. Formation of a catalytically active complex did not, however, increase the association efficiency onto the thylakoids. We can, therefore, postulate that the import of pea POR into pea chloroplasts was not substrate-dependent, nor did formation of catalytically active complexes stimulate or inhibit the membrane association reaction of POR.

  • 117.
    Aros, Krisztian
    et al.
    Halmstad University, School of Teacher Education (LUT).
    Andersson, Fredrik
    Halmstad University, School of Teacher Education (LUT).
    Lärares syn på matematisk kommunikation i dagens skola: Vad anser lärarna att de gör för att främja kommunikationssyftet i Lgr 11 för matematik?2012Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Intentionen med detta examensarbete var att redogöra för vilken syn och vad lärarna anser de gör för att främja kommunikations syftet för matematik i Lgr 11. För att uppnå detta har kvalitativa intervjuer genomförts med tre lärare i årskurs 2-3.  Resultat från undersökningen visar att ingen lärare anser att de inte uppnår målen i Lgr 11. Men lärarna säger att tiden är en avgörande faktor. De stora klasserna gör att läraren upplever att de inte har den tid till varje enskild elev som de hade velat ha. Vår syn på den tid och resurser lärarna måste lägga ner på enbart kommunikation har förändrats. Kommunikation är något som kräver mycket tid och resurser. Att enbart lämna eleverna i smågrupper för att diskutera matematik kan leda till en felaktig förståelse av matematik.

  • 118.
    Arts, Thomas
    et al.
    Quviq AB, Gothenburg, Sweden.
    Mousavi, Mohammad Reza
    Halmstad University, School of Information Technology, Halmstad Embedded and Intelligent Systems Research (EIS), Centre for Research on Embedded Systems (CERES).
    Automatic Consequence Analysis of Automotive Standards (AUTO-CAAS) [Position Paper]2015In: WASA '15: Proceedings of the First International Workshop on Automotive Software Architecture / [ed] Yanja Dajsuren, Harald Altinger & Miroslaw Staron, New York, NY: ACM Press, 2015, p. 35-38Conference paper (Refereed)
    Abstract [en]

    This paper provides some background and the roadmap of the AUTO-CAAS project, which is a 3-year project financed by the Swedish Knowledge Foundation and is ongoing as a joint project among three academic and industrial partners. The aim of the project is to exploit the formal models of the AUTOSAR standard, developed by the industrial partner of the project Quviq AB, in order to predict possible future failures in concrete implementations of components. To this end, the deviations from the formal specification will be exploited to generate test-cases that can push concrete components to the corners where such deviation will result in observable failures. The same information will also be used in the diagnosis of otherwise detected failures in order to pinpoint their root causes.

  • 119. Arvidsson, Alexander
    et al.
    Lundberg, Magnus
    Säkerhetshot mot molnet2018Independent thesis Basic level (degree of Bachelor), 10 HE creditsStudent thesis
    Abstract [sv]

     Att använda sig av molntjänster är idag en växande trend och allt fler företag börjar adoptera molntjänster i sin verksamhet. Trots det upplever många företag att den fortsatta utvecklingen hindras på grund av oro för IT-säkerhetskunskaperna hos leverantörerna. I denna uppsats så ställs frågan “Vilka åtgärder kan tas för att förebygga svagheter och hot mot säkerheten och tillgängligheten av molntjänster?”. Frågan försöker besvaras genom att sammanställa de mest relevanta hoten tillsammans med lösningar på problematiken, genom att utföra en litteraturstudie på ämnet. Uppsatsen inriktar sig främst på leveransmodeller där infrastrukturlösningar erbjuds.  Med den inhämtade kunskapen konstruerades ett formulär med frågor, som sedan skickades ut till olika svenska molntjänstleverantörer. Detta för att försöka skapa en inblick i hur marknaden ser ut när det gäller säkerhetsaspekter, samt vilka åtgärder leverantörerna kan vidta för att hantera säkerhetshot. Uppsatsen har identifierat flera olika hot samt åtgärder för säkerhetsproblem, för tjänster relaterade till infrastruktur lösningar. Uppsatsen bidrar med en bild om vilka åtgärder som en molntjänstleverantör kan ta när det kommer till de mest aktuella säkerhetshot som existerar idag. 

  • 120.
    Arvidsson, Emma
    et al.
    Halmstad University, School of Business and Engineering (SET).
    Dyverfors, Malin
    Halmstad University, School of Business and Engineering (SET).
    Djurskyddsinspektörer: - Behovet av kunskap om exotiska djur2014Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Psittacines and reptiles are exotic animals that are difficult to care for and it requires extra knowledge to make a correct assessment of their wellbeing. An animal welfare inspector, with an education in general animal welfare, may not have a deep enough knowledge of exotic animals to do a proper assessment of the animal’s general condition and its environment. In this paper it was therefore examined if animal welfare inspectors have enough knowledge to do a satisfying inspection of establishments working with selling of exotic animals. A literature study was used to examine difficulties with each species. A survey was sent to chosen county administrations to get information of existing educations/knowledge and pet shops were interviewed to see how the inspectors’ knowledge is perceived. This is done to make an estimation of the demand for this knowledge in big and small counties and how the demand is met. This paper came to the conclusion that even though the county administration may not have this specific knowledge, pet shops felt it was enough to do their job. They did in some cases feel it would be desirable to get more guidance and advices from them. The county administrations also have a clear plan for how to handle cases where expert knowledge, that they may not possess, is needed.

  • 121.
    Arvidsson, Fredrik
    et al.
    Department of Computer and Information Science, Linköping University.
    Ihlström, Carina
    Halmstad University, School of Information Science, Computer and Electrical Engineering (IDE), Halmstad Embedded and Intelligent Systems Research (EIS).
    Lundberg, Jonas
    Department of Computer and Information Science, Linköping University.
    Visions of Future News - Consensus or Conflict?2002In: Proceedings of the 25th Information Systems Research Seminar in Scandinavia (IRIS), IRIS , 2002, p. 25-Conference paper (Refereed)
    Abstract [en]

    The move from print to multimedia will cause changes not only to the form of the news service but also the involved processes in the news organizations. The cooperative scenario building technique is used on a number of groups; end-users, management and media professionals to envisioning the news services of the future. We take the perspective of consensus and conflict to illustrate the identified visions. Firstly, we illuminate conflicts and consensus between the groups, regarding their visions and future use scenarios. Secondly, we show the implications of using the cooperative scenariobuilding technique in relation the consensus and conflict perspectives in cooperative design. We conclude that both consensus and conflicts could be found in the scenarios described in the paper and that the cooperative technique was suitable in this context.

  • 122.
    Arvidsson, Susann
    et al.
    Halmstad University, School of Health and Welfare, Centre of Research on Welfare, Health and Sport (CVHI), Health and Nursing.
    Gilljam, Britt-Mari
    Halmstad University, School of Health and Welfare, Centre of Research on Welfare, Health and Sport (CVHI), Health and Nursing. Region Halland, Halmstad, Sweden.
    Nygren, Jens
    Halmstad University, School of Health and Welfare, Centre of Research on Welfare, Health and Sport (CVHI), Health and Nursing.
    Ruland, Cornelia Maria
    The Centre for Shared Decision Making and Collaborative Care Research (CSDM), Oslo University Hospital, Oslo, Norway & University of Oslo, Oslo, Norway.
    Nordby-Bøe, Trude
    The Centre for Shared Decision Making and Collaborative Care Research (CSDM), Oslo University Hospital, Oslo, Norway.
    Svedberg, Petra
    Halmstad University, School of Health and Welfare, Centre of Research on Welfare, Health and Sport (CVHI), Health and Nursing.
    Redesign and Validation of Sisom, an Interactive Assessment and Communication Tool for Children With Cancer2016In: JMIR mhealth and uhealth, E-ISSN 2291-5222, Vol. 4, no 2, article id e76Article in journal (Refereed)
    Abstract [en]

    BACKGROUND: Children with cancer undergo intensive and long treatment periods that expose them and their families to a number of difficult physical, mental, and social challenges. Empowering children by actively involving them in their care can help them to cope with these challenges. It can, however, be difficult for children to be involved and talk about their illness experiences in a "traditional" conversation with health care professionals, especially for younger children. Sisom (Norwegian acronym "Si det som det er" or "Tell it how it is") is an interactive computer-based assessment and communication tool to give children (aged 6-12 years) with cancer a "voice" in their care. Because of technological advances and widespread use of mobile devices Sisom had to be redesigned to better meet the needs of children of today.

    OBJECTIVE: To redesign Sisom for use on mobile devices and to validate and adapt it for use in a Swedish population of children with cancer.

    METHODS: A user-experience design was used. Content adaptation included forward-backward translation by Swedish and Norwegian translators. Healthy children (n=5), children with experiences of cancer treatment (n=5) and their parents (n=5), and pediatric nurses (n=2) were then involved in culturally adapting Sisom to the Swedish context. The iterative low- and high-fidelity evaluation was supported by a think aloud method, semistructured interviews, and drawings to capture children's views of Sisom. The redesign and evaluation continued until no further changes or improvements were identified by the participants or the researchers.

    RESULTS: Children, parents, and pediatric nurses offered many suggestions for improvements to the original version in terms of content, aesthetics, and usability of Sisom. The most significant change that emerged through user input was a modification that entailed not using problem-focused statements in the assessment items. The parents and pediatric nurses considered the revised assessment items to be general and less diagnosis specific. The evaluation of aesthetics resulted in brighter colors and more positive and exciting details in the animations. The evaluation of usability included improvements of the verbal instructions on how to navigate in Sisom 2, and also that the answers to assessmentitems in Sisom 2 should be saved to provide the children with the option to pause and to continue answering the remaining assessment items at a later stage.

    CONCLUSIONS: Overall, this paper describes the process of using user-experience design with children in order to redesign and validate an interactive assessment and communication tool and how the outcomes of this process resulted in a new version, Sisom 2. All participants confirmed the usability and qualities of using the final version. Future research should be directed toward the implementation of Sisom 2 in clinical practice and to evaluate outcomes from individual and organizational levels.

  • 123.
    Asadi, Hamid Reza
    et al.
    Department of ECE, University of Tehran, Tehran, Iran.
    Khosravi, Ramtin
    Department of ECE, University of Tehran, Tehran, Iran.
    Mousavi, Mohammad Reza
    Department of CS, TU/Eindhoven, Eindhoven, The Netherlands.
    Noroozi, Neda
    Department of CS, TU/Eindhoven, Eindhoven, The Netherlands.
    Towards Model-Based Testing of Electronic Funds Transfer Systems2011In: Proceedings of the 4th International on Fundamentals of Software Engineering (FSEN 2011) / [ed] Farhad Arbab & Marjan Sirjani, Heidelberg: Springer, 2011, Vol. 4171, p. 253-267Conference paper (Refereed)
  • 124.
    Askfelt, Simone
    et al.
    Halmstad University, School of Information Technology.
    Arbenita, Osmani
    Halmstad University, School of Information Technology.
    Ekologiskt hållbar med Business Intelligence: Stöd från BI vid ekologiskt hållbart arbete2016Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Working ecologically sustainable is in some cases essential for a business to continue to be active on the market. There is a larger demand on businesses today to work ecologically sustainable. This has led to businesses reviewing the way they work in order to reduce their environmental impact. The demand on businesses to reduce their environmental impact has led to implementations of new systems with the purpose of supporting their ecological sustainability. A system that is able to support working with ecological sustainability is BI. With the support from BI, businesses can collect, store and analyze data and hence become more informed about how their processes affect the ecological sustainability. However, studies regarding the relationship between BI and ecological sustainability are few. In many cases businesses overview their work with ecological sustainability separate from remaining part of the business. The main purpose of the study is to identify and map how businesses work with ecological sustainability in practice with support from BI. This is mapped in order to finally compose and present proposals on how BI could strengthen the way businesses work with ecological sustainability. The empirical data for this study were collected through semi-structured interviews. The result of the study shows that manufacturing businesses do not take full support from BI regarding their work with ecological sustainability. The study presents proposals of how BI could strengthen businesses work with ecological sustainability

  • 125.
    Assabie Lake, Yaregal
    Halmstad University, School of Information Science, Computer and Electrical Engineering (IDE), Halmstad Embedded and Intelligent Systems Research (EIS).
    Multifont recognition System for Ethiopic Script2006Licentiate thesis, comprehensive summary (Other academic)
    Abstract [en]

    In this thesis, we present a general framework for multi-font, multi-size and multi-style Ethiopic character recognition system. We propose structural and syntactic techniques for recognition of Ethiopic characters where the graphically comnplex characters are represented by less complex primitive structures and their spatial interrelationships. For each Ethiopic character, the primitive structures and their spatial interrelationships form a unique set of patterns.

    The interrelationships of primitives are represented by a special tree structure which resembles a binary search tree in the sense that it groups child nodes as left and right, and keeps the spatial position of primitives in orderly manner. For a better computational efficiency, the primitive tree is converted into string pattern using in-order traversal, which generates a base of the alphabet that stores possibly occuring string patterns for each character. The recognition of characters is then achieved by matching the generated patterns with each pattern in a stored knowledge base of characters.

    Structural features are extracted using direction field tensor, which is also used for character segmentation. In general, the recognition system does not need size normalization, thinning or other preprocessing procedures. The only parameter that needs to be adjusted during the recognition process is the size of Gaussian window which should be chosen optimally in relation to font sizes. We also constructed an Ethiopic Document Image Database (EDIDB) from real life documents and the recognition system is tested with respect to variations in font type, size, style, document skewness and document type. Experimental results are reported.

  • 126.
    Assabie, Yaregal
    et al.
    Halmstad University, School of Information Science, Computer and Electrical Engineering (IDE), Halmstad Embedded and Intelligent Systems Research (EIS).
    Bigun, Josef
    Halmstad University, School of Information Science, Computer and Electrical Engineering (IDE), Halmstad Embedded and Intelligent Systems Research (EIS).
    A comprehensive Dataset for Ethiopic Handwriting Recognition2009In: Proceedings SSBA '09: Symposium on Image Analysis, Halmstad University, Halmstad, March 18-20, 2009 / [ed] Josef Bigun & Antanas Verikas, Halmstad: Halmstad University , 2009, p. 41-43Chapter in book (Other academic)
    Abstract [en]

    Ethiopic script is used by several languages in Ethiopia for writing. We present a comprehensive dataset of handwritten Ethiopic script called DEHR (Dataset for Ethiopic Handwriting Recognition) captured both offline and online. The offline dataset includes isolated characters, Ethiopian church documents and ordinary handwritten texts dealing with various real-life issues. The ordinary texts and isolated characters were freely written by several participants. The church documents are written in Geez and Amharic languages whereas the language for ordinary texts is Amharic only. The online dataset was collected by using two Digimemo devices of different sizes. For isolated characters and online dataset, all the 265 character samples used by Amharic language are included. The dataset is intended to set a benchmark for training and/or testing handwriting recognition, character and word segmentation, and text line detection. The dataset is can be accessed by contacting the authors or via http://www.hh.se/staff/josef/.

  • 127.
    Assabie, Yaregal
    et al.
    Addis Ababa University, Department of Computer Science, Addis Ababa Ethiopia .
    Bigun, Josef
    Halmstad University, School of Information Technology, Halmstad Embedded and Intelligent Systems Research (EIS), Intelligent systems (IS-lab).
    Lexicon-based Offline Recognition of Amharic Words in Unconstrained Handwritten Text2008In: 19th International Conference on Pattern Recognition: (ICPR 2008) ; Tampa, Florida, USA 8-11 December 2008, New York: IEEE Computer Society, 2008, article id 4761145Conference paper (Refereed)
    Abstract [en]

    This paper describes an offline handwriting recognition system for Amharic words based on lexicon. The system computes direction fields of scanned handwritten documents, from which pseudo-characters are segmented. The pseudo-characters are organized based on their proximity and direction to form text lines. Words are then segmented by analyzing the relative gap between subsequent pseudocharacters in text lines. For each segmented word image, the structural characteristics of pseudo-characters are syntactically analyzed to predict a set of plausible characters forming the word. The most likelihood word is finally selected among candidates by matching against the lexicon. The system is tested by a database of unconstrained handwritten Amharic documents collected from various sources. The lexicon is prepared from words appearing in the collected database.

  • 128.
    Assabie, Yaregal
    et al.
    Halmstad University, School of Information Science, Computer and Electrical Engineering (IDE), Halmstad Embedded and Intelligent Systems Research (EIS).
    Bigun, Josef
    Halmstad University, School of Information Science, Computer and Electrical Engineering (IDE), Halmstad Embedded and Intelligent Systems Research (EIS).
    Offline Handwritten Amharic Word Recognition Using HMMs2009In: Proceedings SSBA '09: Symposium on Image Analysis, Halmstad University, Halmstad, March 18-20, 2009 / [ed] Josef Bigun & Antanas Verikas, Halmstad: Halmstad University , 2009, p. 89-92Chapter in book (Other academic)
    Abstract [en]

    This paper describes two appraches for Amharic word recognition in unconstrained handwritten text using HMMs. The first approach builds word models from concatenated features of constituent characters and in the second method HMMs of constituent characters are concatenated to form word model. In both cases, the features used for training and recognition are primitive strokes and their spatial relationships. The recognition system does not require segmentation of characters but requires text line detection and extraction of structural features, which is done by making use of direction field tensor. The performance of the recognition system is tested by DEHR dataset of unconstrained handwritten documents collected from various sources.

  • 129.
    Assarsson, Karin
    Halmstad University, School of Business, Engineering and Science, Biological and Environmental Systems (BLESS), Environmental Science.
    Environmental exposure assessment of metals from reclaimed land in Halmstad harbour: Sweden  Part of an environmental risk assessment2015Independent thesis Advanced level (degree of Master (One Year)), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The harbour land fill in Halmstad has been described in the news as one of the most polluted areas in Halland County based on the a survey from the Swedish environmental protection agency. In order to identify the extent and severity of the situation several environmental investigations have been performed in this area. This report is based on available data from investigations and environmental reports from WSP, Höganäs AB, HEM and Halmstad municipality. This investigation focus on an “Area C” within the land fill where the main land fill material is i.a. slag from a steel work, construction waste, dredge spoil, waste from glass production and a casting shop. Of these material the focus have been on the metal rich slag from the steel work and its possible environmental impact. The environmental exposure of Hg, Pb, Cd, Cr, Zn, Ni, Mo and V have been calculated as an annual load from Area C. Unfortunately the data available for this investigation has not been complete, e.g. slag concentration data with corresponding leachate data was only obtained for one year. The groundwater data and land fill metal concentrations have been measured only once. This made it impossible to investigate e.g. annual variations like ageing effects of the material or weather variations, variation in the properties of the deposed slag material and statistical significance in differences could not be calculated. Further characterisation of the land fill would be worthwhile in order to be able to draw some conclusions.

    Calculations of the environmental load has been performed based on concentration in the slag, the land fill, the leachate data of the slag and groundwater concentrations. A model has been developed to calculate the weighted land fill metal concentration. The partitioning coefficient, Kd; between soil and liquid has been calculated and used to estimate the environmental load.

    It was assumed that the groundwater data was the most reliable data, which indicated that the exposure may be higher than from common soil, especially for Pb and Mo. Relating the environmental exposure values with guideline values based on MKM (less sensitive land use)-land using HQ (hazard quotient) indicates a decreasing risk in the order Pb>V>Mo. However, the exposure is well below that from MKM soil which could be assumed, according to Swedish environmental protection agency guideline values, to be an acceptable exposure.

  • 130.
    Assarsson, Karin
    Halmstad University, School of Business and Engineering (SET).
    Karaktärisering, utvärdering och avsättning av Stena Metalls magnetiska fines2014Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    With a growing population on earth the amount of end-of-life vehicles (ELVs) and other scrap steel increases. The European Directive 2000/53/CE” requires a minimum of 95 % reuse and recovery and 85 % re-use and recycling no later than 1 January 2015, for end-of life vehicles. This imposes a need for more efficient recycling and recovery. Despite this shredder residue (SR) is commonly land filled.

    This report investigated the magnetic fines residue generated at Stena Metall shredder facility in Halmstad, Sweden. Magnetic fines is a complex material containing e.g. ferrous metals, non-ferrous metals, glass, plastic, rubber, polyurethane, sand, dirt, brominated flame retardants and PCB.

    Characterisation of the material and discussion around area of application resulted in suggestions for possible recycling alternatives.

    Characterisation included e.g. particle size, total organic content, x-ray fluorescence, x-ray powder diffraction and elemental analysis with a focus on the metals.

    The results indicated a higher organic content in larger particles and an increasing content of e.g. lead, cadmium and mercury in smaller particles.

    X-ray fluorescence can be used to measure lead in magnetic fines.

    The conclusion was that the combustible organic content needs to be separated before further metal recycling can be applied. If magnetic fines should be used in construction pollutants probably either needs to be removed or encapsulated to prevent exposure to humans and environment.

  • 131.
    Atif, Muhammad
    et al.
    Eindhoven University of Technology, Eindhoven, The Netherlands.
    Cranen, Sjoerd
    Eindhoven University of Technology, Eindhoven, The Netherlands.
    Mousavi, Mohammad Reza
    Eindhoven University of Technology, Eindhoven, The Netherlands.
    Reconstruction and verification of group membership protocols2010Report (Other academic)
    Abstract [en]

    In this paper, we present a process-algebraic specication of group membership protocols specified in [Y. Amir, D. Dolev, S. Kramer and D. Malki, Membership Algorithms for Multicast Communication Groups, Springer-Verlag, 1992]. In order to formalise the protocol and its properties we disambiguate the informal specification provided by the paper. This requires trying different possible interpretations in the formal model and checking the consistency of the assumption and formally verifying the correctness properties. We thus present a formal reconstruction of the membership algorithms and model-check our reconstruction.

  • 132.
    Atif, Muhammad
    et al.
    Department of Computer Science, Eindhoven University of Technology, Eindhoven, The Netherlands.
    Mousavi, Mohammad Reza
    Department of Computer Science, Eindhoven University of Technology, Eindhoven, The Netherlands.
    Formal specification and analysis of accelerated heartbeat protocols2009Report (Other academic)
  • 133.
    Atif, Muhammad
    et al.
    Eindhoven University of Technology, Department of Computer Science, Eindhoven, The Netherlands.
    Mousavi, Mohammad Reza
    Eindhoven University of Technology, Department of Computer Science, Eindhoven, The Netherlands.
    Osaiweran, Ammar
    Eindhoven University of Technology, Department of Computer Science, Eindhoven, The Netherlands.
    Formal Verification of Unreliable Failure Detectors in Partially Synchronous Systems2012In: SAC '12 Proceedings of the 27th ACM Symposium on Applied Computing, New York, NY: ACM Press, 2012, p. 478-485Conference paper (Refereed)
  • 134.
    Austli, Viktor
    et al.
    Halmstad University, School of Information Technology.
    Hernborg, Elin
    Halmstad University, School of Information Technology.
    Standardization of Bug Validation2017Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The usage of the Internet is widely implemented all over the world in a number of concepts. This generates a demand of establishing security as to sustain the integrity of data. In this thesis a service will be presented which can be used to identify various web vulnerabilities in order to regulate these and therefore prevent exploitation. As the world is today the increase of technical implementation provides with a growing amount of security flaws, this affect the organizations which may have to increase their resource financing in an effort to counter these. But what if a tremendous amount of work could be automated and avoid organizations having to spend an enormous amount of finances validating security flaws reported to them? What if these flaws could be validated in a more effective manner? With this tool being establish an individual will no longer require advanced technical knowledge in order to identify whether a web vulnerability is present or not but instead have an automated test perform the procedure for them.

  • 135.
    Averfalk, Helge
    et al.
    Halmstad University, School of Business and Engineering (SET), Biological and Environmental Systems (BLESS), Energiteknik.
    Hansson, Anna
    Halmstad University, School of Business and Engineering (SET), Biological and Environmental Systems (BLESS), Ecology and Environmental Science.
    Karlsson, Niklas
    Halmstad University, School of Business and Engineering (SET), Biological and Environmental Systems (BLESS), Ecology and Environmental Science.
    Werner, Sven
    Halmstad University, School of Business and Engineering (SET), Biological and Environmental Systems (BLESS), Energiteknik.
    Mattsson, Marie
    Halmstad University, School of Business and Engineering (SET), Biological and Environmental Systems (BLESS), Ecology and Environmental Science.
    Klimatgaser i Halland – en målinriktad analys med framtidsperspektiv2014Report (Other academic)
    Abstract [sv]

    Rapporten innehåller en analys av utsläppen av de sex klimatgaserna i Halland mellan 1990 och 2011, en skattning vad som kommer att genomföras till 2020 och förslag till åtgärder för att kunna leverera utsläppsreduktioner efter 2020. Resultaten visar att de halländska utsläppen har minskat med 20 procent sedan 1990, målet om 27 procent lägre utsläpp till 2020 kommer troligen att uppnås, transporter och jordbruk måste kunna leverera utsläppsreduktioner efter 2020, regionala plan- och styrdokument måste i större utsträckning kunna kvantifiera framtida utsläppsreduktioner samt att det behövs ett regionalt kompetenscenter i Halland för att länet ska kunna leverera utsläppsreduktioner i framtiden.

  • 136.
    Axelsson, Andreas
    Halmstad University, School of Information Technology.
    Bluetoothsäkerhet, neglegerad eller (o)kunskap2019Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Under 2017 hittades sårbarheten Blueborne som gjorde att en person kunde ta sig in i mobiltelefoner eller datorer helt obemärkt genom att enheten endast ha igång bluetooth.

    Bluetoothsäkerheten behövs tas på minst lika stort allvar som alla andra enheter som tillexempel wifi eller annan trådlös utrustning som kan äventyra att information hamnar i orätta händer, för skulle felaktig information nå en person med ont uppsåt så skulle konsekvenserna vara förödande för privatpersoner eller för företag.

    Denna uppsats behandlar frågor genom att intervjua personer på företag och genom enkätundersökning, det har påvisats att majoriteten av företag har bristande kunskap eller saknar någonting som kan varna en användare eller administratör vid en attack. Diskussion kring attackers potentiella förödelse mot företag när det kommer kring information och drift och hur det går att skydda sig.

  • 137.
    Axelsson, Helena
    et al.
    Halmstad University, School of Business, Engineering and Science.
    Spångberg, Annica
    Halmstad University, School of Business, Engineering and Science.
    Bioackumulering av tungmetaller i vildsvin (Sus scrofa): -analys av biotillgängligheten av bly och kadmium i vildsvinslever2018Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    As the wild boar population increases, so does the consuming of wild boar meat. Often with the belief that this is much healthier than conventional meat. International studies have shown that wild boar meat is more likely to contain higher concentrations of soil pollutions than other game meat. The aim of this study was therefore to analyze the concentrations of lead (Pb) and cadmium (Cd) in the liver of free living wild boars (Sus scrofa), located in the south of Sweden. Samples were taken from 10 wild boars during the hunting season of spring, 2018. The lead and cadmium concentrations in wild boar livers were determined by AAS- atomic absorption spectroscopy. Our result shows a higher uptake for cadmium than lead. Cadmium also seem to increase with age in wild boars due to bioaccumulation. However, 7 out of 10 livers exceeded the maximum limit for food safety standards regarding lead (0,10 mg/kg) and 2 out of 10 for cadmium (0,50 mg/kg). Therefore, the consumer should practice vigilance, especially for wild boar meat originating from areas known to be contaminated.

  • 138.
    Axelsson, Markus
    et al.
    Halmstad University, School of Business, Engineering and Science.
    Lundgren, Oskar
    Halmstad University, School of Business, Engineering and Science.
    Raytelligent Cloud2017Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Todays age sees more and more devices connected to the internet providing otherwise quite limited hardware with the ability to perform more complex calculations. This project aims to create a system for managing a users radar devices using a cloud platform. The system also provides the ability for the user to upload their own custom applications which can make use of data provided by the radar device, run on virtual machines and if required have the ability to push notifications to the users mobile applications. To simplify the system development, it has been divided into three separate subsystems, specifically the radar device, the cloud service and the mobile application. The result of the project is a complete system with a web application which provides the user with the ability to register their radar device(s), upload source code which is compiled and run on the cloud platform and the ability to send push notices to a mobile application. 

  • 139.
    Azam, A.S.M Faruque
    et al.
    Halmstad University, School of Information Science, Computer and Electrical Engineering (IDE).
    Johnsson, Markus
    Halmstad University, School of Information Science, Computer and Electrical Engineering (IDE).
    Mobile One Time Passwords and RC4 Encryption for Cloud Computing2011Independent thesis Advanced level (degree of Master (One Year)), 15 credits / 22,5 HE creditsStudent thesis
    Abstract [en]

    Cloud services have grown very quickly over the past couple of years, giving consumers and companies the chance to put services, resources and infrastructures in the hands of a provider. Therefore removing the need of providing these services themselves. This can for example lead to cost savings, better resource utilization and removing the need of technical expertise for the customers.

    There is big security concerns when using cloud services. Security is very important in cloud computing since people and companies store confidential data in the cloud. It must also be easy to use the services provided, since cloud services have so many users with different technical background. Since the control of services and data needed for the everyday-run of a corporation is being handled by another company, further issues needs to be concerned. The consumer needs to trust the provider, and know that they handle their data in a correct manner, and that resources can be accessed when needed.

    This thesis focuses on authentication and transmission encryption in cloud services. The current solutions used today to login to cloud services have been investigated and concluded that they don't satisfy the needs for cloud services. They are either insecure, complex or costly. It can also be concluded that the best encryption algorithm to use in a cloud environment is RC4, which is secure and at the same time a fast algorithm. Compared to AES, which together with RC4, are the most common encryption methods used over the Internet today, RC4 is the better choice.

    This thesis have resulted in an authentication and registration method that is both secure and easy to use, therefore fulfilling the needs of cloud service authentication. The method have been implemented in a fully working finished solution, that use a regular mobile phone to generate one time passwords that is used to login to cloud services. All of the data transmissions between the client and the server have been configured to use RC4 encryption.

    The conclusions that can be drawn is that the security proposal implemented in this thesis work functions very well, and provide good security together with an ease of use for clients that don't have so much technical knowledge.

  • 140.
    Bacauskiene, Marija
    et al.
    Department of Applied Electronics, Kaunas University of Technology, Lithuania .
    Verikas, Antanas
    Halmstad University, School of Information Science, Computer and Electrical Engineering (IDE), Halmstad Embedded and Intelligent Systems Research (EIS).
    Gelzinis, Adas
    Department of Applied Electronics, Kaunas University of Technology, Lithuania .
    Valincius, Donatas
    Department of Applied Electronics, Kaunas University of Technology, Lithuania .
    A feature selection technique for generation of classification committees and its application to categorization of laryngeal images2009In: Pattern Recognition, ISSN 0031-3203, E-ISSN 1873-5142, Vol. 42, no 5, p. 645-654Article in journal (Refereed)
    Abstract [en]

    This paper is concerned with a two phase procedure to select salient features (variables) for classification committees. Both filter and wrapper approaches to feature selection are combined in this work. In the first phase, definitely redundant features are eliminated based on the paired t-test. The test compares the saliency of the candidate and the noise features. In the second phase, the genetic search is employed. The search integrates the steps of training, aggregation of committee members, selection of hyper-parameters, and selection of salient features into the same learning process. A small number of genetic iterations needed to find a solution is the characteristic feature of the genetic search procedure developed. The experimental tests performed on five real-world problems have shown that significant improvements in Classification accuracy can be obtained in a small number of iterations if compared to the case of using all the features available.

  • 141.
    Bacauskiene, Marija
    et al.
    Department of Electrical and Control Equipment, Kaunas University of Technology, Kaunas, Lithuania.
    Verikas, Antanas
    Halmstad University, School of Information Technology, Halmstad Embedded and Intelligent Systems Research (EIS), Intelligent systems (IS-lab).
    Gelzinis, Adas
    Department of Electrical and Control Equipment, Kaunas University of Technology, Kaunas, Lithuania.
    Vegiene, Aurelija
    Department of Otolaryngology, Kaunas University of Medicine, Kaunas, Lithuania.
    Random forests based monitoring of human larynx using questionnaire data2012In: Expert systems with applications, ISSN 0957-4174, E-ISSN 1873-6793, Vol. 39, no 5, p. 5506-5512Article in journal (Refereed)
    Abstract [en]

    This paper is concerned with soft computing techniques-based noninvasive monitoring of human larynx using subject’s questionnaire data. By applying random forests (RF), questionnaire data are categorized into a healthy class and several classes of disorders including: cancerous, noncancerous, diffuse, nodular, paralysis, and an overall pathological class. The most important questionnaire statements are determined using RF variable importance evaluations. To explore data represented by variables used by RF, the t-distributed stochastic neighbor embedding (t-SNE) and the multidimensional scaling (MDS) are applied to the RF data proximity matrix. When testing the developed tools on a set of data collected from 109 subjects, the 100% classification accuracy was obtained on unseen data in binary classification into the healthy and pathological classes. The accuracy of 80.7% was achieved when classifying the data into the healthy, cancerous, noncancerous classes. The t-SNE and MDS mapping techniques applied allow obtaining two-dimensional maps of data and facilitate data exploration aimed at identifying subjects belonging to a “risk group”. It is expected that the developed tools will be of great help in preventive health care in laryngology.

  • 142.
    Bade, Hans
    et al.
    Halmstad University, School of Information Technology.
    Hedlund, Oscar
    Halmstad University, School of Information Technology.
    Anti-Forensik: Anti-forensiska metoder på mobila enheter2018Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Mobile phones have become essential for the extraction of digital artifacts in foren-sic investigations. Android’s Linux-based operating systems bring greater potentialfor anti-forensic methods, which means that knowledge of anti-forensics is essen-tial to today’s IT forensic investigators. In this study, the effect of anti-forensicson Android-based mobile devices is highlighted, as well as revealing today’s anti-forensic attack methods against forensic tools. By experiment, it is shown how toprevent a forensic tool from extracting data by using a simple script.

  • 143.
    Baerveldt, Albert-Jan
    et al.
    Halmstad University, School of Information Science, Computer and Electrical Engineering (IDE), Halmstad Embedded and Intelligent Systems Research (EIS), Intelligent systems (IS-lab).
    Arras, Kai Oliver
    EPFL, Lausanne, Switzerland.
    Balkenius, Christian
    Lund University, Lund, Sweden.
    Editorial2003In: Robotics and Autonomous Systems, ISSN 0921-8890, E-ISSN 1872-793X, Vol. 44, no 1, p. 100p. 1-Article in journal (Other (popular science, discussion, etc.))
  • 144.
    Bailey, Arlene
    et al.
    Department of Sociology, Psychology and Social Work, Faculty of Social Sciences, University of the West Indies, Mona, Kingston, Jamaica.
    Ngwenyama, Ojelanki K.
    Institute for Innovation and Technology Management, Faculty of Business, Ryerson University, Toronto, ON, Canada.
    Bridging the generation gap in ICT use: Interrogating identity, technology and interactions in community telecenters2010In: Information Technology for Development, ISSN 0268-1102, E-ISSN 1554-0170, Vol. 16, no 1, p. 62-82Article in journal (Refereed)
    Abstract [en]

    In this paper, we explore the issues related to the generation gap in the use of information and communication technologies through an examination of relevant literature and findings from empirical field research in community-based telecenters in a developing country. Our findings show that intergenerational interaction is a key issue and social relations and interactions are explored through an analysis of social networks in conjunction with social identity theory and social representations theory. A conceptual framework is developed of the impact of intergenerational interactions at telecenters on community development. © 2010 Commonwealth Secretariat.

  • 145.
    Balador, Ali
    et al.
    SICS Swedish ICT Västerås AB, Västerås, Sweden. & Polytechnic University of Valencia, Valencia, Spain.
    Böhm, Annette
    Halmstad University, School of Information Technology, Halmstad Embedded and Intelligent Systems Research (EIS).
    Calafate, Carlos T.
    Polytechnic University of Valencia, Valencia, Spain.
    Cano, Juan-Carlos
    Polytechnic University of Valencia, Valencia, Spain.
    A Reliable Token-Based MAC Protocol for V2V Communication in Urban VANET2016In: 2016 IEEE 27TH ANNUAL INTERNATIONAL SYMPOSIUM ON PERSONAL, INDOOR, AND MOBILE RADIO COMMUNICATIONS (PIMRC), Piscataway: IEEE , 2016, p. 1586-1591Conference paper (Refereed)
    Abstract [en]

    Safety applications developed for vehicular environments require every vehicle to periodically broadcast its status information (beacon) to all other vehicles, thereby avoiding the risk of car accidents in the road. Due to the high requirements on timing and reliability posed by traffic safety applications, the current IEEE 802.11p standard, which uses a random access Medium Access Control (MAC) protocol, faces difficulties to support timely and reliable data dissemination in vehicular environments where no acknowledgement or RTS/CTS (Request-to-Send/Clear-to-Send) mechanisms are adopted. In this paper, we propose the Dynamic Token-Based MAC (DTB-MAC) protocol. It implements a token passing approach on top of a random access MAC protocol to prevent channel contention as much as possible, thereby improving the reliability of safety message transmissions. Our proposed protocol selects one of the neighbouring nodes as the next transmitter; this selection accounts for the need to avoid beacon lifetime expiration. Therefore, it automatically offers retransmission opportunities to allow vehicles to successfully transmit their beacons before the next beacon is generated whenever time and bandwidth are available. Based on simulation experiments, we show that the DTB-MAC protocol can achieve better performance than IEEE 802.11p in terms of channel utilization and beacon delivery ratio for urban scenarios.

  • 146.
    Bandaru, Rammohan
    et al.
    Halmstad University, School of Information Science, Computer and Electrical Engineering (IDE).
    Barman, Debashis
    Halmstad University, School of Information Science, Computer and Electrical Engineering (IDE).
    Performance Evaluation of SCTP as a Transport Layer Protocol2011Independent thesis Advanced level (degree of Master (One Year)), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    TCP and UDP are the most popular transport protocols used for end-end data transmission. The rapid growth of internet leads to development of many innovative applications in the current environment. Depending on the functionality of these applications, requirements of transport protocols are changing. TCP is known for its problems with Head Of Line blocking (HOL) and SYN attacks which gives reduced performance, and also doesn’t support Multi-Homing. SCTP is another transport layer protocol similar to TCP which provides end-end communication. It has some unique features like support for Multi-homing and multi-streaming. It also protects better from SYN attacks by using four-way hand shake mechanism during association establishment. As an extension to SCTP, CMT-SCTP was proposed to take full advantage of a multi-homed host by doing load sharing over multiple paths. SCTP is believed to be a next generation transport protocol.

    This thesis gives an overview of the SCTP protocol and its features focusing on analysing and testing of failover mechanisms provided by SCTP in multi-homed host, evaluating the transmission performance of SCTP vs TCP in a real network environment. This report also gives a theoretical analysis on how SCTP can mitigate SYN attacks by using four-way handshake mechanism and the state of art of CMT-SCTP.

  • 147.
    Bandaruk, Tatsiana
    Halmstad University, School of Business and Engineering (SET).
    Metal and metalloid sequestration in a constructed wetland system for treatment of landfill leachate during 2003-20122013Independent thesis Advanced level (degree of Master (One Year)), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Landfill leachate treatment can be expensive and energy consuming when carried out in wastewater treatment plants. However, there can be several possible solutions for reducing cost and energy requirements and one of them is on-site biological treatment of polluted landfill leachate in constructed wetland systems. This paper evaluates the sequestration of 15 metals and 2 metalloids in a free water surface flow constructed wetland consisting of 10 ponds at Atleverket near Örebro during a period of ten years. The operation and maintenance of treatment wetland is minimal and the retention time is highly variable but generally between 6-12 months. The water flows by gravity from one pond to another. The system which was designed for removal of nitrogen and organic material shows a good retention efficiency of these elements. The analyte concentrations in the effluent and influent were compared by using statistical software. The variations in inlet concentration were significantly higher than in the ones in the outlet. The removal efficiency for all elements but three (magnesium, sulfur and boron) was above 50%. Some elements were retained to a certain level during all years; these elements are Al, As, Ba, Ca, Cr, Cu, Pb, Fe, V, Zn and Mn. Long-term analysis of the operation has shown that the constructed wetland continues to perform well and it retains its ability to remove the metals studied.

  • 148.
    Bangalore Girijeswara, Karthik
    Halmstad University, School of Information Technology, Halmstad Embedded and Intelligent Systems Research (EIS), CAISR - Center for Applied Intelligent Systems Research. Mr..
    Peer group recognition based on Vehicle operation and behavior: Supervised and unsupervised approach towards peer group recognition and feature space exploration2017Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Behavior recognition provides an interesting perspective for understandingthe different modes of a system and the influence of eachmode under varying conditions. In most of the systems, prior knowledgeof different expected behavior is available. Whereas, in an automotivedomain, a fleet of vehicle with many external factors influencingeach vehicle and an asynchronous performance of each vehicleon road, creates the complexity on analyzing and predicting the exacttime segments of vehicles in a fleet exhibiting similar behavior. Thisthesis focuses on recognizing time segments of vehicles that exhibitsimilar behavior based on supervised and unsupervised approaches.In supervised approach, classifiers are trained to predict two distinctiveoperations(highway and in-city). In unsupervised approach, featurespace is explored for identification of consistent features and existenceof other operations. An unsupervised approach to recognizepeer cluster groups is combined with supervised classification resultsto achieve lower computational complexity.

  • 149.
    Barisas, Dominykas
    et al.
    Kaunas University of Technology, Kaunas, Lithuania.
    Duracz, Adam
    Halmstad University, School of Information Technology, Halmstad Embedded and Intelligent Systems Research (EIS), Centre for Research on Embedded Systems (CERES).
    Taha, Walid
    Halmstad University, School of Information Technology, Halmstad Embedded and Intelligent Systems Research (EIS), Centre for Research on Embedded Systems (CERES). Rice University, Houston, TX, USA.
    DSLs Should be Online Applications2014In: Joint International Conference on Engineering Education & International Conference on Information Technology: ICEE/ICIT-2014: June 2 - 6, 2014: Riga, Latvia: Conference proceedings, 2014, p. 314-319Conference paper (Refereed)
    Abstract [en]

    Domain-Specific Languages (DSLs) play an important role in both practice and education. But developing them is challenging, because a DSL must ultimately satisfy a large and complex set of user/customer requirements to fulfil its intended role, and neither requirements nor users are fully available at all times during the development process. Requirements can be elicited using agile methods but such methods assume the availability of the users. The situation is further complicated when the user base is primarily students and when enhanced learning is a key requirement. In this paper we propose developing DSLs, especially educational ones, as online applications. We analyze how this can help requirement elicitation and learning. Being online brings language development closer to the user, yielding new opportunities to improve and accelerate the language design process. It is also well-matched to agile methods, since web- based analytics provide an abundant source of data that integrates naturally into the development process. As an example, we consider applying the method to Acumen, a DSL designed to support teaching Cyber-Physical Systems.

  • 150.
    Bark, Johanna
    Halmstad University, School of Business, Engineering and Science.
    Framgångsrik hållbarhetskommunikation: Kommunikationens betydelse för miljöarbete inom små och medelstora företag2017Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Denna studie syftar att svara på frågeställningen om hur en klimatsatsning inom små och

    medelstora företag (SME) kommuniceras på bästa sätt och var i svårigheter kan ligga. Jämförelser

    görs också med liknande projekt som genomförts och de framgångsfaktorer de haft för att se om

    de går att överföras till de små och medelstora företagen i Halland, som ingår i denna studie.

    Genom jämförelser med andra rapporter, djupintervjuer med representanter ur de medverkande

    företagen, workshops i samarbete med EMC och Alexandersoninstitutet samt analys av dessa har

    utmaningar och möjligheter i arbetet med att implicera klimatarbetet i företagens verksamhet

    identifierats. Resultaten har analyserats i enlighet med miljöpsykologisk ansats. Genom att

    utvärdera attityder, upplevd kontroll och upplevda hinder, har förslag för implementering och

    kommunikation tagits fram.

    Resultatet av djupintervjuer och workshops visar att företagen behöver vägledning när det gäller

    kommunikationen av sitt klimatarbete internt såväl som externt. Företagen vet inte vilka kanaler

    som ska väljas eller vad som ska kommuniceras. De flesta är överens om att ledningen behöver

    föregå med gott exempel. Därför bör ledningen utbildas i första hand. Företagen har bland annat

    problem med att anställda tillhör olika grupper som arbetar på skilda sätt, vilket gör att

    kommunikationen behöver anpassas för att passa respektive grupp. Svårigheter att omvandla

    klimatåtgärder till mätbara värden så att de tydligt kan redovisas för medarbetare och därmed öka

    motivationen till ett förändrat beteende är andra faktorer företagen har problem med.

    Små och medelstora företag kan arbeta med ett antal framgångsfaktorer grundade på analyser av

    ovanstående. Det är viktigt att arbeta strukturerat och med tydliga mål, det är också viktigt att

    använda sig av mindre målgrupper, även under den interna hållbarhetskommunikationen. Tesen att

    den interna kommunikationen är avgörande för ett framgångsrikt hållbarhetsarbete kan styrkas

    med hjälp av denna studie.

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