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  • 1.
    Andersson, David
    Karlstad University, Faculty of Health, Science and Technology (starting 2013).
    Applikation för ett skepps framdrivningssystem2013Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Det har blivit allt mer intressant för företag att investera i miljön. I bilindustrin strävar man efter att få så bränslesnåla fordon som möjligt och man har där kommit långt. Inom varvindustrin har man inte kommit lika långt.

    Elektronik-mekanik företaget Q-TAGG R&D har under en längre tid utvecklat ett system till fartyg som avser minska bränslekonsumtionen för fartyg. Samtidigt har det blivit allt mer populärt med s.k. surfplattor och dessa ger en ny möjlighet inom grafiska gränssnitt. Detta projekt handlar om att skapa ett grafiskt användargränssnitt till det ovan nämnda systemet.

    Projektet skulle vare en prototyp på ett tänkbart gränssnitt som ska låta användaren kommunicera med systemet och hämta information och presentera detta.

     

    Resultatet av detta projekt blev ett användargränssnitt som låter användaren se aktuell bränsleförbrukning och hastighet på fartyget som använder systemet. Användare kan också ställa in önskad hastighet och förbrukning. En graf presenterar hur hastigheten och förbrukningen har sett ut den senaste tiden. Det går att se fartygets rullning, nigning och vridning samt varje motors varvtal.

  • 2.
    Andersson, Martin
    Karlstad University, Faculty of Arts and Social Sciences (starting 2013), Department of Social and Psychological Studies.
    "Who am I now?" Sense of Gender and Place in Digital Gameplay: Affective Dimensions of gameplay in XCOM: Enemy Within2016Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    In this essay I analyze the ways in which gender and space are shaped and made sense of through digital gameplay. Specifically in the turn based strategy game XCOM: Enemy Within for the MacBook Air with a computer mouse as the primary input device. Using a mixed methods approach consisting of gameplay sessions of XCOM and qualitative interviews with two players regarding their gameplay I argue that earlier research on space within game studies has overlooked the ways in which the shaping of space in gameplay is also gendered. Developing a theoretical framework influenced by gender studies, critical theory, affect theory, assemblage theories of space, and game theory, I argue for how the shaping of space and gender in game-play is interdependent. This in that the shaping of space and gender in digital gameplay is in constant relation and tension with societal norms and the affective capacities of bodies and digital games. In conclusion, I reflect on the possibilities to develop more empirical research based on the the theoretical framework explored in the essay.

  • 3.
    Andersson, Patrik
    Karlstad University, Faculty of Health, Science and Technology (starting 2013).
    Utveckling av slipverktyg för handdriven kedjesåg: Ett produktutvecklingsprojekt utfört på Karlstads universitet2018Independent thesis Basic level (university diploma), 15 credits / 22,5 HE creditsStudent thesis
    Abstract [en]

    This Bachelor’s Thesis documents the process and result of an examining product development project for the Innovation and design programme at Karlstad’s University.

    A concept for a maintenance tool designed for a manual chainsaw has been developed. By applying the phases applied for the product design process described by Johannsson (2013), and by utilizing the knowledge from a comprehensive pre-study, a first concept was established. With a reiterative design process this concept has been developed and made into a first prototype that have been tested, evaluated and adjusted accordingly.

    The construction as described in chapter 2.6- Detail construction is a handheld tool with file gauges specially designed for the manual chainsaw. By using a groove for the chain at the top of the tool, it can be fixed and sharpened without any additional equipment.  A prototype was made by virtual prototyping and constructed by 3D-printing.

    Project should proceed by implementing the changes in the prototype that was observed during testing and then evaluate that result before a manufacturing adoption.

  • 4.
    Andmarsjö, Markus
    Karlstad University, Faculty of Health, Science and Technology (starting 2013).
    Simulering av exteriört bussljud: Undersökande av en Ray Tracing metod för ljudsimuleringar2014Independent thesis Basic level (university diploma), 15 credits / 22,5 HE creditsStudent thesis
    Abstract [en]

    A method to simulate exterior bus sound with the help of ray tracing has been tested and evaluated. To do this a model of a bus has been built up using CAD software. Dominant noise sources in the bus and material coefficients for the materials included in the bus have been researched. The bus has been imported into the simulation program Odeon where a number of simulations have been performed. Different pass-by simulations have been performed and compared with physical measurements. Different degrees of encapsulation of the engine compartment have been simulated. A grid response has been formulated to optimize the positioning of the absorbers. A calculation error has been found in release 10.13 of the Odeon Software which led to a comparison between Odeon 10.13 and a demonstration version of Odeon 12.

    The results show that the simulation method in its current state performs best when no sound transmission is taken into account. This requires that there are openings in the bus as problems will arise if the bus is simulated with too high a level of encapsulation. Theoretically, no rays would in this case be able to reach any receiver outside the engine compartment. The reason that the transmission loss cannot be taken into account depends on the errors found in Odeon 10.13. The software incorrectly overestimates the sound transmission and transmits rays even in cases where an area is defined to not transmit any rays at all, something that Odeon 12 calculates correctly. Until this is resolved, the simulation method can be used to estimate the energy distribution between the octave bands, the optimal placement of absorbers and to some extent the overall sound level of the bus.

  • 5.
    Andreas, Svensson
    et al.
    Karlstad University, Faculty of Technology and Science, Department of Energy, Environmental and Building Technology.
    Nabrink, Robin
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Engineering and Chemical Sciences.
    GNSS-Styrning: Information för platschefer2013Independent thesis Basic level (university diploma), 15 credits / 22,5 HE creditsStudent thesis
  • 6.
    Asp, Daniel
    Karlstad University, Faculty of Technology and Science.
    Kvalitetsbristkostnader i monteringshallen: Vad beror de på, hur stora är de och vad går det att göra åt dem?2006Independent thesis Basic level (professional degree), 15 points / 22,5 hpStudent thesis
    Abstract [sv]

    Sammanfattning

    Monteringshallen hos Metso Paper Karlstad är beroende av många utomstående funktioner och processer. De som jobbar med montering och utcheckning måste koordinera sina arbeten med tillverkningen, underleverantörer, inköp, konstruktion och skeppning.

    Alla är medvetna om att det finns problem i monteringshallen och att det måste det göras något för att komma till rätta med dem. Men vilka orsakerna är till problemen finns det olika uppfattningar om. En del upplever det också som att problemen återkommer gång på gång. Få försök har gjorts för att på metodiskt sätt få en gemensam syn på problematiken eller ta fram fakta som kan ligga till grund för beslut om förbättringsområden. Dessutom finns en attityd om att kvalitetsarbete mest tar tid. Problemen anses inte härröra från montaget utan de får helt enkelt finna sig att vara de som städar upp efter andra.

    Syftet med detta examensarbete har varit att svara på frågeställningar om problemens orsaker, dess kostnadsstorlekar och vilka åtgärder som kan vara lämpliga för att minska kvalitetsbristkostnaderna i monteringshallen. Det övergripande målet har varit monteringshallens utveckling av kvalitetsarbetet. Rapporten är baserad på de anställdas erfarenheter som framkommit vid intervjuer. Teorin är vald med fokus på de olika delar som krävs för långsiktigt och kontinuerligt kvalitetsarbete.

    Intervjuerna visar att medvetenheten om sin egen del i problem och problemlösning är låg. De betraktar sig själva som om de inte har del i problemen. Detta är mindre bra eftersom det finns många beroenden till andra funktioner. Dessutom behandlas det många varianter av maskiner vilket än mer ökar behovet av väl fungerande processer. Därför är den nuvarande attityden och kvalitetstänkandet ett stort hinder mot nödvändigt förbättringsarbete. Orsakerna till omarbetningar lagras inte vilket försvårar möjligheterna att på ett effektivt sätt finna lösningar på problemen.

    Rapportens resultat är en genomgång av de nödvändiga byggstenar som krävs för att långsiktigt kunna bedriva framgångsrikt kvalitetsarbete. Det rekommenderas att personer med chefsbefattning tar in de synpunkter som har påpekats och gör en prioritering av det som behöver åtgärdas. Nedanför listas förslag på åtgärder för ett förbättrat kvalitetsarbete i monteringshallen.

    1. Tillsätt en resurs som jobbar aktivt med förbättrings- och kvalitetsfrågor (förbättringssamordnare/ledare).

    2. Börja med pilotgrupp/avdelning som får utbildning i kvalitetsmetoder och verktyg parallellt med förbättringsarbetet.

    3. Informera och utbilda personalen i grunderna inom kvalitet för att få ett gemensamt språk

    4. Våga genomföra förändringar.

    5. Börja med att åtgärda saker som ger tydliga förbättringar med hjälp av 5S

    6. Förbättra Baan-systemet så att det går att spara felorsaker

    7. Kartläggning och förbättring av processerna

  • 7.
    Avramovski, Aleksandar
    Karlstad University, Faculty of Arts and Social Sciences (starting 2013), Karlstad Business School.
    Blockkedjan en revolutionerade teknik: Mikrotransaktioners möjliga användning2016Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Transaktioner på nätet har ökat drastiskt och till följd av detta har en stor efterfrågan inommikrotransaktioner för företag och organisationer uppkommit. Forskning inom detta områdehar visat att mikrotransaktioner kan effektivisera allt i vardagen, så som hur informationöverförs och att den kan utnyttjas i marknaden för att skapa fler affärsmöjligheter. Dennauppsats undersöker mikrotransaktioners egenskaper, funktioner och diskuterar deraseventuella användning i nutida transaktionssystem. Undersökningen tar upp varför företag villha användning av transaktionssystemet och vilka möjligheter som kan uppstå med tekniken.För att finna en allmän förståelse om tekniken genomfördes litteraturgenomgång som bas ochen kvalitativ intervjuundersökning hos företag som överväger att använda tekniken ochföretag som utvecklar plattformar för tekniken. Med intervjuerna undersöktes om det varmöjligt att använda sig av mikrotransaktioner och hur dagens utveckling ser ut.Slutsatserna av undersökningen blev att mikrotransaktioner går att användas i små mängder,men tekniken behöver bli mer utvecklad för att företag och organisationer skall kunnaacceptera tekniken.

  • 8.
    Axelsson, Erika
    Karlstad University, Faculty of Arts and Social Sciences (starting 2013), Department of Educational Studies (from 2013).
    En bildanalys av användaren och utvecklare av tekniken i barnböcker ur ett genusperspektiv2018Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    This study is a subjective image analysis of children books where the purpose of the study was to investigate how gender aspects are expressed in children books with the focus on content regarding technology. The study is aimed at educators who are active in preschool activities. The study is based on four Alfons Åberg-books and a newer book focusing on digital technology called Hej Ruby. The images have been analyzed based on Falk's analysis framework where the images are divided into four categories - denotative level, internal context, external context and connotative level.

    The study has found that the technology in children's books follows certain traditional gender patterns. For example, the technology in the kitchen, most often associated with women is forgotten, it does not show as well as the typical male technology, as construction where technology often appears as a project created by the man.

  • 9.
    Baudtler, Rasmus
    Karlstad University, Faculty of Health, Science and Technology (starting 2013).
    Laddning för trådlösa hörlurar: med användaren i fokus2016Independent thesis Basic level (university diploma), 15 credits / 22,5 HE creditsStudent thesis
    Abstract [sv]

    Denna rapport behandlar ett examensarbete för högskoleingenjörsprogrammet inom innovationsteknik och design vid Karlstad universitet. Arbetet är genomfört av Rasmus Baudtler, handledare för projektet var Lennart Wihk och examinator professor Leo De Vin.

    Projektet är utfört på uppdrag av Zoundindustries, Stockholm. Utvecklare av moderna ljudprodukter. Uppdraget har fokuserats mot att hitta en alternativ lösning för laddning till den trådlösa hörluren Plattan ADV Wireless från varumärket Urbanears. Det huvudsakliga målet var att utveckla en lösning utifrån designmetodik baserad på användarstudier och ingenjörsteknik med syfte i att förenkla laddningsscenariot för användaren och öka tillgängligheten för laddning.

    Projektet har utförts enligt den industriella produktutvecklingsprocessen med fokus inom designprocessen. Arbetet startade i en omfattande förstudie innehållande en produktutvärdering, en teknikstudie samt användarstudier genom designmetodik. Detta ledde till i en projektinriktning mot induktiv laddning.

    Med kunskap inom användarens önskemål och teknikens krav sammanställdes en kravspecifikation med en uppdaterad problemformulering. Genom konceptsframtagningsmetoder togs ett flertal koncept fram utifrån kravspecifikationen. Koncepten behandlades sedan genom olika typer av matriser i ett konceptval som resulterade i ett slutgiltigt konceptval.

    Det slutgiltiga valet var en portabel laddningsplatta med inbyggt batteri. Konceptet ansågs förenkla laddningsscenariot och öka tillgängligheten för användaren. Utvecklingsarbetet fortgick genom fastställande av gränssnitt mellan laddare och hörlur, användarscenarion, modell- och prototypbygge. Det slutgiltiga konceptet presenterades i form av 3D-renderingar och uppvisning av prototyperna vid en utställning vid Karlstads universitet. Genom utvecklingsarbetet uppfylldes de krav som ställts på produkten och en möjlig implementering av tekniken i nuvarande produkt kunde bekräftas. Därför anses projektet stå till svar för den problemformulering som ställts upp i projektet.

    För vidare utveckling av konceptet anses följande områden behöva kompletteras eller undersökas: teknikstudie genom expertis, anpassningsarbete av kretskort, utvärdering av produktens anslutningar samt utvärdering av produktens batteri. 

  • 10.
    Bengtsson, Jonatan
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Environmental and Life Sciences (from 2013).
    Metoder för uppskattning och kartläggning av oskyddade trafikanters resmönster: En litteraturstudie2019Independent thesis Basic level (degree of Bachelor), 15 credits / 22,5 HE creditsStudent thesis
    Abstract [sv]

    I Sverige pågår ett ständigt arbete med att öka trafiksäkerheten. Sverige har som mål att ha noll dödsolyckor i trafiken, den så kallade nollvisionen. Det är känt att oskyddade trafikanter utsätts för större risker i trafiken och för att uppnå visionen behöver säkerheten för oskyddade trafikanter ökas. Det är i dagsläget svårt att bedöma effekterna av säkerhetsåtgärder som genomförs. För att få fram bättre lösningar i trafiksäkerheten och dra slutsatser om de åtgärder som redan görs behövs insikt om oskyddade trafikanters resmönster.

    Det här arbetet syftade till att undersöka vilka metoder för uppskattning av oskyddade trafikanters resmönster som finns tillgängliga och kan användas i svenska städer genom att utföra en litteraturstudie. Litteraturstudien utfördes på engelska och svenska texter med sökmotorerna Google Scholar, Web of Science och Scopus.

    Litteraturgranskningen visade att de vanligaste metoderna som används i Sverige är flödesmätningar och resvaneundersökningar. Internationellt har flera studier utförts med flera andra metoder som kan vara intressanta även för Sverige. Främst bland dem är analyser på data från lånecyklar och GPS-data från crowdsourcing med mobilapplikationer.

    Slutsatsen som dras från studien är att ingen metod är tillräckligt utvecklad så att den redan idag kan appliceras i svenska städer utan modifikationer. Crowdsourcing med appar som nyttjar mobilens GPS ger mycket bra data att utföra analyser på men ett problem som återfinns i alla studier med crowdsourcing är mängden användare eller användargruppens homogenitet. 

  • 11.
    Berglund Saxholm, Angelika
    Karlstad University, Faculty of Arts and Social Sciences (starting 2013), Department of Educational Studies.
    "Jag bygga, bampan": Vilka kunskaper kan barn i 1,5-2 årsålder ta till sig om ficklampan som ett tekniskt system2018Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The purpose of this study is to, from a qualitative point of view, examinte some young children’s understanding of what knowledge of a flashlight as a simple technical system, children of 1,5-2 years can absorb. The study is qualitative and has been conducted with participatory observations where children are given the opportunity to investigate a flashlight and its various components: lamp, power switch, batteries and cap.

    The result shows that the children's ability to acquire knowledge of the flashlight subcomponents function is very extensive. The study involved a total of six children aged 1,5-2 years. Through an educational activity, the children were introduced to a flashlight and after three days an observation was conducted where the children were allowed to investigate and explore some of the flashlight subcomponents. The result is based on the observation. After the observation, the majority of the children who participated had developed knowledge of the flashlight subcomponents function and an understanding that the batteries must be in the flashlight, the cap must be on and the children need to press the power switch to cause the flashlight to lit.

  • 12.
    Bjurulf, Veronica
    et al.
    Karlstad University, Faculty of Technology and Science, Department of Physics and Electrical Engineering.
    Kilbrink, Nina
    Karlstad University, Faculty of Arts and Education, Department of Education.
    Segolsson, Mikael
    Ämnet teknik i grundskolan - med empiriska exempel2009In: Ämnesdidaktiska brobyggen: didaktiska perspektiv inom lärande och forskning, Karlstad: Karlstad University Press , 2009, p. 100-109Chapter in book (Other academic)
  • 13. Björklund, Kristin
    et al.
    Persdotter, Emilia
    Kvalitetshöjning av digitala registerkartan2018Independent thesis Basic level (university diploma), 5 credits / 7,5 HE creditsStudent thesis
    Abstract [en]

    In order to achieve a more efficient community-building process, access to digital property boundaries is required. Lantmäteriet's digital register map, which shows the whole of Sweden's real estate classification, has been based on preposition maps, digitized maps and orthophotos. Due to the different construction methods, the map has a very varying quality. Lantmäteriet has been commissioned by the government to review how improvements in the map can be made in terms of location accuracy.

    The purpose of the thesis was to investigate what is needed to correct and improve the quality of the directory map in an area like Dingelvik, Västra götaland county. Parts of the area in Dingelvik were selected for reconnaissance and field work. Rediscovered border points were measured with NRTK and in some cases with RUFRIS, always measured repeatedly for control.

    With available coordinates in local coordinate systems, transformation could be performed with passpoints in both systems. Border points that was considered displaced were excluded in the transformation relationship and was given coordinates by the transformed points instead of the measured. Some points couldn’t be measured or transformed. A few of them could be constructed by measurements from two adjacent points available in cadaster register.

    Approximately 60% of the property's border points received an increased quality. The points average displacement was 6 meters towards the coordinates in the cadastral directory map.

  • 14.
    Brunzell, Jonas
    Karlstad University, Faculty of Social and Life Sciences.
    Jämförelse av två höjdmodeller av Karlstad tätort2012Independent thesis Advanced level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Abstract

    Two digital elevation models (DEM:s) covering the city Karlstad have been compared. One of them is local and was ordered by and delivered to the municipality, whereas the other one is part of Lantmäteriet’s (Swedish National Land Survey) new national elevation model. Both are rasters with a grid size of two meters. The DEM:s are based on two different airborne la-ser scans of the area. After the laser scans, the elevation point clouds have gone through the processes of georeferencing, point filtering, and interpolation. The objective of the study was to investigate if the cell values of one DEM differ from the corresponding cell values of the other DEM, how these deviations vary geographically, and if there is a connection between the type of terrain and the size of the deviations. Another aim has been to study what the dif-ferences in cell values mean for the prediction of flooding. An important reason why highly accurate elevation models have been developed is the need to predict which areas are likely to be flooded, and which consequences a flooding is likely to have. Here, the number of affected persons and buildings, the length of the affected parts of roads, and the size of the affected built-up and non-built-up areas are calculated for both of the DEM:s, and for two different water levels.

    The study shows that the mean difference between the cell values of the two DEM:s is within a range of a few centimeters, with a RMS (standard deviation) of a couple of decimeters. This corresponds to earlier comparisons between overlapping elevations models made by Lantmäteriet. Within the urban area, it has not been possible to find differences that are due to varying terrain types. When cells containing buildings are included in the analysis, many larger deviations are found, due to failings in the process of point classing. This shows that the DEM:s have some problems with reliability. The DEM:s also differ a bit concerning the number of flooded objects. The number of affected persons according to the national DEM is for example 95, 5 % of the number given by the local DEM, for one of the water levels stu-died.

  • 15.
    Burgos, Claudia
    Karlstad University, Faculty of Health, Science and Technology (starting 2013).
    Auralisering: Simulering av trafikljud i olika punkter i samhället baserat på samhällsbullerberäkningar.2014Independent thesis Basic level (university diploma), 15 credits / 22,5 HE creditsStudent thesis
    Abstract [en]

    This thesis purpose is to verify Ramböll acoustics method of generating auralisations (simulation of sound environments and in this case the simulation of traffic noise in three different areas in Stockholm). The method is based on traffic noise calculations with the calculation standard Nord2000 where sound levels that are obtained are applied to audio files with traffic similar content. Results have been obtained through measurements, calculations and comparisons at selected points in the three different areas where traffic noise has been developed. The audio files with traffic noise fits relatively good with reality, which can be seen as a ground that Ramböll acoustics method works.

  • 16.
    Bäcke, Maria
    Karlstad University, Faculty of Arts and Education, Department of Languages.
    Self, Setting, and Situation in Second Life2009In: Literary Art in Digital Performance: Case Studies in New Media Art and Criticism / [ed] Francisco J. Ricardo, New York: Continuum, 2009, p. 109-142Chapter in book (Refereed)
    Abstract [en]

    Linden Lab, the company behind the online world Second Life (SL), invites multiplic- ity with slogans like “Your World. Your Imagination.”1 Yet many SL residents’2 profiles give evidence of adjustment to group narratives or norms in various social spaces inside the world. They seem to favor already established social and cultural conventions when creating an online identity; hence they also adjust to already existing hierarchies. I argue that residents in SL recreate social orders and power structures similar to ones already existing outside SL, even though they are of course under no obligation to do so. In that sense social and cultural patterns are reproduced and in some cases even amplified. My aim here is to trace social dynamics evident in three groups within this digital space and my hypothesis is that the rules of these social spaces then function as a foundation and guideline for identity formation, and in fact almost seem to prescribe a certain way of acting or behaving. Two of the groups have a clear role-playing profile, based on books and movies, whereas role-playing is not required, although possible, in the third group. All of them are thus removed from the lifeworld by constituting either purely fictive or, conversely, historical constructs, but they can nevertheless provide clues to how the residents think in an environment that is not primarily “real life” based, and in which anything, even a utopia, can be possible. By reading group charters and profile descriptions found in the SL search engine, and studying articles and blogs functioning either as group information channels or journals for individuals in each community, I examine the motivations and power structures driving avatar and online identity construction in role-playing communities, with a focus on the interac- tion between the overarching “state” power, the Linden Lab, the three communities, their respective role-models, and the rules that govern them, as well as the individuals that are a part of them. 

  • 17.
    Bäckstrand, Gunnar
    et al.
    University of Skövde, Sweden, Loughborough University, UK & Volvo Powertrain, Sweden .
    Thorvald, Peter
    University of Skövde, Sweden & Loughborough University, UK.
    De Vin, Leo
    University of Skövde, Sweden.
    Högberg, Dan
    University of Skövde, Sweden.
    Case, Keith
    University of Skövde, Sweden & Loughborough University, UK.
    The impact of information presentation on work environment and product quality: a case study2008In: Proceedings of the 40th annual Nordic Ergonomic Society Conference, Reykjavik: NES , 2008Conference paper (Refereed)
    Abstract [en]

    In manufacturing, it is vital that production personnel have the right information at the right time and place. The main purpose of information delivered to a workplace is to support the worker in a way that contributes to the quality of the product as well as productivity. However, when information processing becomes a large part of the workload, the time for core workplace activities is reduced. A study was conducted at a heavy diesel engine assembly line with the aim of finding how the assembly personnel interact with the information presented to them in their work context and how this affected quality and productivity. The study focused on four assembly stations and involved 70 assembly workers over a period of ten days and nights during which 2600 standard and customised variant engines were assembled. The main feature of the study was a change in the information system that reduced the amount of data and information provided, changed the location of the information, and modified the timing of information presentation. Results from the study show that the information presented at an assembly workstation influences the quality as well as the assembly process itself. The number of internal rejects decreased by 40% on two of the stations and on the other two stations no errors occurred during the study. This influence on the assembly process is of great importance from a quality perspective; by changing the information system and thereby the workers’ behaviour, the errors were reduced significantly. Whilst errors are few and detected internally, redressing these errors is a waste. Furthermore, an adequate information system boosts operator confidence and reduces cognitive stress levels. The information system used in this study was relatively simple (simpler than the regular system) and based on colour coded cards. Nevertheless, the impact was major and this indicates that when designing an information system for mass-customised assembly, a wide range of solutions needs to be considered. A study in final assembly of heavy trucks is planned for the future where the ultimate goal is to arrive at worker and task tailored presentation of information in customised assembly.

  • 18.
    Carlsson, Caroline
    et al.
    Karlstad University, Faculty of Arts and Social Sciences (starting 2013), Department of Geography, Media and Communication.
    Tidholm, Matilda
    Karlstad University, Faculty of Arts and Social Sciences (starting 2013), Department of Geography, Media and Communication.
    Maskinstyrning: Maskinstyrning och dess användning ur ett geodetiskt perspektiv2013Independent thesis Basic level (university diploma), 5 credits / 7,5 HE creditsStudent thesis
  • 19.
    Carlén, Erik
    et al.
    Karlstad University, Faculty of Health, Science and Technology (starting 2013).
    Bliznac, Filip
    Karlstad University, Faculty of Health, Science and Technology (starting 2013).
    En upplysande förstudie om kontrollrumslyssning: Ett förundersökande arbete om högkvalitativa kontrollrums komplexa ljudmiljö2014Independent thesis Basic level (degree of Bachelor), 15 credits / 22,5 HE creditsStudent thesis
    Abstract [en]

    This thesis is a preliminary study in which high quality listening environments have been investigated both objectively and subjectively with the purpose to identify and interpret general acoustic phenomenon that occurs, and how they are percieved, as well to enlighten the reader about these. The report deals with sound physics such as acoustics, an audio engineer's role, psychoacoustics, control rooms and technical equipment. The measurements and listening tests performed have all been done from the intended listening position which were then set against specific requirements and recommendations from AMS (Audio Measurement Standards) and EBU (European Broadcasting Union). Listening test have been made according to EBU standards. Also interviews were conducted with experienced audio engineers. In Conclusion and Discussion objectively measured data is compared with the listening tests, where similarities and conclusions about listening are drawn.

  • 20.
    Dahlén, Magnus
    Karlstad University, Faculty of Economic Sciences, Communication and IT, Department of Computer Science.
    Windows 8-surfplatta: gränssnitt till ordersystem2012Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
  • 21.
    Dahm, Mette
    Karlstad University.
    The role of ecodesign in altering Environmental management systems to comply with ISO 14001:2015 in the medical device industry: A case study of HemoCue AB2016Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    The purpose of this study was to investigate the role of ecodesign in the altering process of EMS (ISO 14001:2004) to meet the compliance obligations of ISO 14001:2015. The purpose was furthermore to investigate the role of ecodesign in promoting sustainable development thinking and in assisting the management of environmental issues in companies manufacturing medical devices. A qualitative study was conducted in which a case-study research design was employed. Furthermore, a literature review provided theory on the concepts of sustainability and sustainable development, ecodesign and EMS used as a basis for the problem statement and theoretical framework. It was found that ecodesign improves the circumstances for sustainable development thinking. By incorporating environmental concern in the early stages of product development, compromises with other important valuecreating functions of a product can be avoided without spoiling irreversible investments. By communicating and marketing ecodesign as a part of the product quality, the demand on the markets is expected to increase benefitting profit in the long run. Ecodesign was also found to supplement and interact with the missing elements of EMS following a recent enforcement of ISO 14001:2015. The study contributes to research by providing an empirical example of how companies operating in the medical device industry can implement ecodesign to alter the EMS towards compliance with ISO 14001:2015. The study also contributes to research by exploring new ways of combining tools developed for addressing environmental issues in companies. As a conclusion the case study resulted in the construction of a tool for ecodesign with consideration taken to the identified processes, company structure and culture at HemoCue. The tool can be implemented in the EMS of HemoCue to improve the circumstances for sustainable development thinking and to contribute in the altering of ISO 14001:2004 to comply with the ISO 14001:2015 standard.

  • 22.
    De Vin, Leo
    Karlstad University, Faculty of Technology and Science, Department of Mechanical and Materials Enineering.
    On the Suitability of the Information Fusion JDL-U Model as a Reference Model for Virtual Product and Production development2009In: 19th International Conference on Flexible Automation and Intelligent Manufacturing 2009 (FAIM 2009): Proceedings of a meeting held 6-8 July 2009, Middlesbrough, United Kingdom / [ed] Nabhani, F., Curran Associates , 2009, p. 1348-1355Conference paper (Refereed)
  • 23.
    De Vin, Leo
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Engineering and Physics.
    Simulation, Models, and Results: Reflections on their Nature and Credibility2015In: Proceedings of Flexible Automation and Intelligent Manufacturing, FAIM2015, Wolverhampton, UK / [ed] Chike F. Oduoza, Wolverhampton, UK: The Choir Press , 2015, p. 148-155Conference paper (Refereed)
    Abstract [en]

    Simulation tools are widely used across the product, process and resource domains of product- and production development. This paper discusses the nature of simulation models and the wide use of simulation models .It uses virtual manufacturing, in particular discrete event simulation project methodology, as an example to elucidate important aspects of simulation, in particular human roles and some selected project phases of which verification and validation in relation to the simulation’s intended purpose are discussed in particular. The paper uses the NASA CAS model for credibility assessment of simulations to arrive at a schematic representation of how overall credibility as composed of aspect related to the model, the data, and the model’s use.

  • 24.
    De Vin, Leo
    Karlstad University, Faculty of Technology and Science, Department of Mechanical and Materials Enineering.
    Virtual Manufacturing Practice and Advanced Applications2010In: Proceedings of the 14th International Conference on Machine Design and Production: UMTIK 14 / [ed] Akkök, M. et al, Güzelyurt: Middle East Technical University , 2010, p. 19-38Conference paper (Other academic)
    Abstract [en]

    This keynote gives a general description of simulation and its associated system of interest. In the context of virtual manufacturing, three domains can be distinguished; product domain, process  domain  and  resource  domain.  Examples  of  simulation  in  these there  domains  are given, as well as some examples of simulation across these domains. Typical steps/phases in  a  simulation  project  are  described,  as  well  as  common  pitfalls.  In  industrial  simulation projects, usually a number of stakeholders are involved with different maturity/experience in the  field  of  simulation.  It  is  described  how  such  industrial  simulation  projects  can  be supported by a handbook, developed in close collaboration with a group of companies. As one example of advanced applications, simulation-based remote monitoring and diagnostics is  described.  The  other  example  of  advanced  applications  given  in  the  paper  is  that  of simulation-based optimisation.

  • 25.
    Durl, James
    et al.
    Griffith University, Australia.
    Trischler, Jakob
    Karlstad University, Faculty of Arts and Social Sciences (starting 2013), Service Research Center (from 2013).
    Dietrich, Timo
    Griffith University, Australia.
    Co-designing with young consumers: Reflections, challenges and benefits2017In: Young Consumers, ISSN 1747-3616, E-ISSN 1758-7212, Vol. 18, no 4, p. 439-455Article in journal (Refereed)
    Abstract [en]

    Purpose - This paper aims to explore co-design as a method for actively involving young consumers in the design of an alcohol education program that utilizes an interactive Virtual Reality (VR) component. Design/methodology/approach - Dietrich et al. (2017) six-step framework was applied to a co-design project involving four groups of 14- to 16-year-old Australian high school students. Data collection included observations by three facilitators, written feedback from members of each group and video presentations of the generated ideas. The data analysis focused on investigating the applicability of the six-step framework to young consumers and evaluating the quality and practicality of the generated ideas. Findings - Sensitization is key to enabling young consumers to become equal participants during the co-design process. Sensitization allowed the participants to engage in the design task in a playful manner, which fostered active participation and creative insights during the co-design session. A team approach based on interactivity and group autonomy enabled adolescents to contribute insights into their specific needs and wants. This was complemented by a trusting environment and the presence of immediately available yet "hands off" facilitators. Research limitations/implications - The findings are limited to one specific sample and design task. Future research is required that investigates co-design with young consumers in different contexts. Practical implications - This paper provides guidance for the application of co-design with young consumers by highlighting the importance of sensitization and facilitation. Originality/value - This study marks one of the first approaches to co-designing alcohol education programs, including VR components, with young consumers. The findings contribute to a better understanding of the consequences of involving young consumers through co-design.

  • 26.
    Ekvall, Alexander
    Karlstad University, Faculty of Health, Science and Technology (starting 2013).
    Utredning av kylsystem med samberedning av tappvarmvatten för god termisk komfort i nybyggda småhus: Modellering och simulering av fyra kylsystemlösningar för tre lokaliseringar i Sverige med avseende på energi-, klimat- och kostnadsberäkningar2018Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
    Abstract [sv]

    I takt med striktare mål för energianvändning och krav på energieffektivitet skärps energikrav för småhus successivt. Moderna småhus isoleras kraftigare och görs mer lufttäta i syfte att minska transmissionsförlusterna vintertid och därmed också energiåtgången för uppvärmning. Ett ökat fokus på att minska småhusens energianvändning vintertid slår tillbaka sommartid då moderna småhus kan konstateras ha en förhöjd överhettningsrisk med sämre termisk komfort och med negativa hälsoeffekter som följd.

    I arbetet används Simulink för att simulera prestandan hos fyra systemlösningar för produktion av komfortkyla och tappvarmvatten. Systemlösningarna som modelleras är ett resultat av ett samarbete med Swegon AB som vill undersöka potential i frikyla samt ny, icke etablerad teknik. Systemlösningarna består av en referenssystem med luft-luftvärmepump, därefter: (1) absorptionskylmaskin driven av solfångare: (2) frikyla från borrhål med bergvärmepump: (3) frikyla med uteluft via FTX-aggregat, lagringstank för kyla och stöd av luft-vattenvärmepump.

    Resultatet visade att frikyla och tappvarmvatten med bergvärmepump hade den bästa energi- och miljöprestandan. Systemet med en absorptionskylmaskin driven av solfångare var, trots användningen av solfångare, klimatmässigt sämst. Systemet blir troligtvis för dyrt då huset blir beroende av ytterligare system för uppvärmning vintertid vilket driver upp kostnaderna. Frikyla via utomhusluft blev det näst bästa alternativet ur ett energi- och miljöperspektiv men lider av höga investeringskostnader på grund av många komponenter för att systemet ska fungera. Simuleringarna visade att potentialen för lagring av frikyla från utomhusluft via FTX-aggregat är relativt god men att det fanns få tillfällen under året då kylan kunde användas.

    Att kunna bereda tappvarmvatten med annat än enbart el kommer bli viktigare för att inte riskera att överskrida BBR:s energikrav. Att komplettera klimatskalet med åtgärder som hindrar solinstrålning från att ta sig in i byggnaden kan vara en åtgärd som kan förändra resultatet i utredningen. Det gör att det är nödvändigt med vidare studier där hänsyn tas till fler parametrar, exempelvis husets värmetröghet. Vidare studier bör även kompletteras med en analys av husets värmebehov vintertid innan en slutgiltig slutsats kan dras om vilken systemlösning som kan bli ett kommersiellt gångbart alternativ på marknaden. 

  • 27.
    Emanuelsson, Lisa
    Karlstad University, Faculty of Health, Science and Technology (starting 2013).
    Gestaltning av självförsörjande utomhusbelysning för offentlig miljö: Ett exteriört designkoncept av LED-enhet med elektricitet genererad av solenergi2015Independent thesis Basic level (degree of Bachelor), 15 credits / 22,5 HE creditsStudent thesis
    Abstract [en]

    Su-Ping Chen Burman has with her company SC Burman developed a standalone unit for public outdoor lighting. It is in line with sustainable development since it is self-sufficient and works without contact with the existing power grid.

    The design of the standalone unit had been entirely based on the technical prerequisites and the form came secondary. Therefore a new aesthetic design was requested. The request was for an aesthetic design that would fit into public places like playgrounds and outdoor gyms.

    The mission was to create an exterior design concept without any concern for the original solution’s appearance.

    A primary requirements specification was made for the product and the specification was based on four main components; solar cell module, LED luminaire, holder (s) and battery.

    To identify components defining the concept design of the lighting solution a second analysis was made. Solar cell module, LED luminaire and holder(s) were the ones chosen and the three components were therefore essential during the creation process.

    When the device is self-powered using solar energy it has a link to design with sustainable development. This motivated the theoretical part of the work; a foreseeable life cycle analysis of the components defining the concept design, as well as a technical description of the solar cells and LED luminaire.

    The main activities of the product development were project planning, feasibility study and the parallel process of generating, developing and evaluating ideas and concepts. Evaluation and selection of the concept through the process was done in consultation with clients, supervisor, innovation advisor and a potential end-customer. The process of generating and selecting concepts for development was carried out in two phases. The first phase defined a certain theme for the aesthetic design of the concept - a classic parasol. The second phase of the creation process was creating with inspiration from this theme. The result of the second phase led to an election mainly between two concepts, where one was to be developed as the final exterior concept for the lighting solution. One of the concepts, an organic one was therefore modelled in 3D-CAD and 3D-printed. Subsequently Burman desired the other alternative, a concept geometrical in form, as the final one. The concept named concept 8.a Geometrical was modeled in CAD, 3D-printed in a scale 1:15 and rendered. The 3D-printing gave a physical appreciation of the concept, while rendering showed how the concept could look like with supposed material. In addition the rendered pictures gave an appreciation of proportions, dimensions and size in relation to users.

    The end result of the project was shown at an exhibition for Bachelor of Science in Innovation and Design and at Karlstad University in spring 2015.

  • 28.
    Emma, Lorin
    Karlstad University, Faculty of Arts and Social Sciences (starting 2013), Department of Educational Studies.
    Professor von Trapps flygande matta har kraschat: En studie om hur man kan arbeta med teknik i förskolan2017Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Syftet med studien är att få kunskap om hur man kan arbeta med teknik i förskolan. Studien fokuserar på pedagogernas erfarenheter och kunskaper inom teknik i förskolan. Två pedagoger från två olika förskolor intervjuades med semistrukturerade intervjuer som metod.

     

    Resultatet i studien visar att teknik kan läggas på olika nivåer beroende på barnets ålder. Resultatet visar att det finns mycket vardagliga moment som är teknik som man kanske inte riktigt tänker på är teknik i förskolan, som att dra upp dragkedjan, spola i toaletten och få upp en pedalhink. Resultatet visar även på att man kan få in teknik på ett roligt och enkelt sätt genom exempelvis teman. Tidigare forskning visar att rolig teknik i tidig ålder kan göra barnen nyfikna på teknik, att det ger dem en bättre inställning till teknik i ungdomen.

     

    Slutsats: Teknik går att introducera redan i tidig ålder, teknik kan vara enkelt, teknik finns överallt, teknik kan vara kul.   

  • 29.
    Fahey, Paul
    et al.
    University of Dublin, Trinity College, Ireland.
    Harney, Clare
    University of Dublin, Trinity College, Ireland.
    Kesavan, Sajeesh
    University of Dublin, Trinity College, Ireland.
    McMahon, Alana
    University of Dublin, Trinity College, Ireland.
    McQuaid, Louise
    University of Dublin, Trinity College, Ireland.
    Kane, Bridget
    University of Dublin, Trinity College, Ireland.
    Human Computer Interaction Issues in Eliciting User Requirements for an Electronic Patient Record with Multiple Users2011In: 24th International Symposium on Computer-Based Medical Systems / [ed] Mark Olive, Tony Solomonides, Bristol, England: IEEE, 2011Conference paper (Refereed)
    Abstract [en]

    Emphasis on usability for all users at the design stage of an Electronic Patient Record (EPR) is directly relative to successful implementation. This article outlines the values of considering the heterogeneity of users in EPR systems. We review the literature available on the design of EPR sys- tems with a focus on its usability principles. A case study of how an outpatient EPR system was successfully implemented in the Epilepsy Unit of Beaumont Hospital, Dublin, with due importance to usability testing for a multidisciplinary team is explored. 

  • 30.
    Falch, Petter
    Karlstad University, Faculty of Health, Science and Technology (starting 2013).
    Är bilder i läromedel i teknik normutmanande?: En semiotisk bildanalys av bilder i läromedel i teknik för åk 4–6 ur ett genusperspektiv.2018Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    The purpose of this essay is to investigate the roles assigned to girls/women and men/boys in educational materials in the technology subject in grades 4-6 and how it affects connotations that could arise from a norm critical perspective. Because images can affect norms and that the National Agency for Educations clearly instructs that certain norms should be challenged, pictures in two teaching materials in technology have been examined. Through an inquiry on Facebook, it was found that Boken om teknik and PULS Teknik 4-6 were the most commonly used teaching materials according to the respondents. Images from the books were analyzed using a semiotic analysis framework, which divides the analysis into four categories that concern internal and external contexts and denotative and connotative levels.

         The results show that images in teaching materials in middle school technology have both norm breaking and norm detaining signs. They vary in extent from showing active, independent girls to all-knowing mansplaining men. The connotations that could arise from these goes from those that girls could identify with technology to technology as a historical male domain.

  • 31.
    Ferrer Conill, Raul
    Karlstad University, Faculty of Economic Sciences, Communication and IT, Department of Media and Communication Studies.
    Knowledge societies: Empowering through ICT4E2013In: Student Interaction Design Research Conference SIDeR'13, 2013Conference paper (Refereed)
    Abstract [en]

    Within a framework of development, this paper discusses the current estate of education access as well as some of the current challenges for the implantation and design of ICT initiatives in developing countries, and reflects on the new shift of paradigm in the field of ICT4E. These challenges can be overcome by applying methods that merge their implementation model with local ownership. Technological literacy from a local context perspective is presented as an effective model to foster social stability, sustainable development and socio-economic growth.

    Through an examination of the goals and initiatives undertaken by the GeSCI, the idea of a new framework for collective empowerment and social change is presented. To better understand the dynamics between local context and ICT4E, the socioeconomic background of the digital divide is analyzed. Finally, the article establishes the links between empowerment education and the creation of knowledge societies that turn physical networks into digital human interaction.

  • 32.
    Flognman, Jeanni
    et al.
    Karlstad University, Division for Engineering Sciences, Physics and Mathematics.
    Unneberg, Helen
    Karlstad University, Division for Engineering Sciences, Physics and Mathematics.
    Wilén, Jaana
    Karlstad University, Division for Engineering Sciences, Physics and Mathematics.
    Förvarings- och doseringsbehållare för torrvara2004Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
    Abstract [sv]

    Detta är ett 20 p examensarbete på Innovations- och designingenjörs-programmet vid Karlstads universitet i samarbete med företaget QDP. Projektets utgångspunkt har varit ett patent gällande en förvarings- och doseringsbehållare. Uppgiften var att formge patentets delar och genomföra en marknadsundersökning som tolkades med arbetsmetoden Quality function deployment (QFD). Målsättningen med projektet har varit att genomföra en marknadsundersökning samt ta fram koncept på formgivningen av patentets delar. En förstudie har genomförts med litteraturstudier, studiebesök och intervjuer. För närvarande finns inte någon liknande produkt på den svenska marknaden, de konkurrenter som finns, finns på den amerikanska marknaden. Uppdragsgivaren är därför intresserad av konsumenternas behov och synpunkter på den framtida produkten. För att utveckla en produkt som uppfyller kundens önskemål genomfördes åtta intervjuer med konsumenter och fyra intervjuer med fackfolk. Marknadsundersökningen resulterade i åtta kundönskemål som omvandlades till produktegenskaper med hjälp av QFD-matriser. Vårt arbete resulterade i tre olika koncept innehållande formgivning av behållare och mått samt dokumentation i form av matriser. Koncepten uttrycker enkelhet, har nyhetsvärde på marknaden och uppfyller de kundönskemål som framkom av QFD. Produkterna har en enkel och genomtänkt design som är anpassad till köket.

  • 33.
    Fredriksson, Louise
    Karlstad University, Faculty of Health, Science and Technology (starting 2013).
    Skolskjutsplanering med nätverksanalys: Jämförelse av rutt- och räckviddsanalyser mellan ArcGIS och GEOSECMA webb2017Independent thesis Basic level (university diploma), 15 credits / 22,5 HE creditsStudent thesis
    Abstract [en]

    All municipalities in Sweden have an obligation to ensure that school children have a safe and secure travel to school. Each municipality decides the minimum distance and determines if school transport should be offered or not. The municipalities in northern Bohuslän, a county in western Sweden, are currently using manual school transportation planning. The distance between a child’s home and the school is measured to determine if a child is entitled school transportation.

    The GIS-group of the municipalities of northern Bohuslän has an ambition to automate the planning process of school transportation using network analysis. By developing and evaluating methods and results of calculated catchment areas and routing in the software ArcGIS and GEOSECMA web, the distance to school can be calculated. The report has been delimited to the municipality of Strömstad. The transportation distance limits differ depending on which age class the children belong to.

    The result of a calculate route between a school and an address point gave the shortest road in ArcGIS and the fastest route in GEOSECMA web. The fastest route is a combination of distance and speed restrictions. When comparing the results of the route analyses in both software there were no differences in the layout of the route, the only difference was the distance between the address point and the school. ArcGIS gave the exact distance while GEOSECMA web gave a rounded result, which makes ArcGIS a more reliable result. In the catchment area analysis ArcGIS created detailed areas close to the road network and GEOSECMA web created generalized areas and a simplified result. The details in the result of GEOSECMA webs catchment areas are deficient compared to the result of ArcGIS.

    The route planning module in GEOSECMA web is based on the Network Analyst extension of ArcGIS, but the analyst tools are simplified and gave generalized result of the analysis. ArcGIS delivers a more detailed result with both tools compared to the result of GEOSECMA web. The result makes ArcGIS a better software to use the GEOSECMA web due to the more reliable and detailed result given in both route and catchments area analyses.

  • 34.
    Fritzon, Ida
    Karlstad University, Faculty of Health, Science and Technology (starting 2013).
    Designprocessens styrka till grund för att utveckla miljö och verksamhet: Beachcenter Varamobaden på uppdrag av Designservice2014Independent thesis Advanced level (degree of Master (Two Years)), 15 credits / 22,5 HE creditsStudent thesis
    Abstract [en]

    The design process strength as the basis for developing environment and activity is a project on a design and engineering approach using its methods and tools working on several parts as a basis for developing and creating a removable overall concept. The project is performed on behalf of Designservice in Karlstad, where the end customer is the Beachcenter Varamobaden.

    Beach Center Varamobaden is located in Motala and will be the starting point of a number of activities such as windsurfing, stand-up paddling and kayaking. In addition to activities Beachcenter also wants to offer their customers a restaurant that reflects their vision and events, which welcomes everyone just as they are. Study and formulate Beachcenter's vision and then implement it in the restaurant's layout and infrastructure based at the owner's vision, but also from a customer perspective.

    The feasibility study involves the elements that can create the searched vision. Advancement in the subjects trademark and color theory has been made, a number of different analyzes and several interviews with, among others a design and communications agency focused on the work process.

    A functional analysis summarizes all the sub-functions that should be included on Beachcenter, but also shares the concept into less graspable parts. Based on function analysis, the project has initially been divided into two parts; In House is the first part and has focused on the visual concept. The second part is about the customer experience at the Beachcenter. While working with the customer experience nevertheless identified a key touch point that became the starting point for a third part in the koncept, which involves developing a module bar becoming a center at the Beachcenter.

    Surf style, retro, healthiness, fellowship, activity and relaxation are some of the words that must imbue the concept. Various evaluation methods have been used to get the final concept to match the client's vision as well as possible.

    The completed parts of the In House part is color scale , pattern and fonts that have been applied to various products in the concept but also has been anchored in the restaurant as the opening ceremony on April 30 was completed. The customer experience has been summarized in an overhead view of Beachcenter where module bar is a major center for direct contact between the customer and the staff at the Beachcenter. Module bar has become a prototype and can easily be stored, moved and assembled at Beachcenter.

    With a brand identity, which is a summary of the results obtained during the project, Beachcenter at any time can develop the concept where it is located today, but also easily move or expand their business with the security that the same vision and feel can be created there.

  • 35.
    Garcia, Johan
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Mathematics and Computer Science.
    The GATM Computer Assisted Reasoning Framework in a Security Policy Reasoning Context2014In: Proceedings of COGNITIVE 2014, The Sixth International Conference on Advanced Cognitive Technologies and Applications, International Academy, Research and Industry Association (IARIA), 2014, p. 215-219Conference paper (Refereed)
    Abstract [en]

    Humans are often faced with the need to make decisions regarding complex issues where multiple interests need to be balanced, and where there are a number of complex arguments weighing in opposite directions. The ability of humans to understand and internalize the underlying argumentation structure resulting from reasoning about complex issues is limited by the human cognitive ability. The cognitive limit can manifest itself both in relation to an inappropriate level and amount of detail in the presentation of information, as well as in the structuring of the information and the representation of the interrelationships between constituting arguments. The GATM model provides a structured way to represent reasoning, and can be useful both in the decision-making process as well as when communicating a decision. In this work a component-based overview of the GATM model is provided in the context of security policy reasoning, where previous work has shown that decision-making transparency and improved understanding of the reasoning behind a security policy may lead to a beneficial impact on policy compliance.

  • 36.
    Govindarajan, Venkatesh
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Engineering and Chemical Sciences (from 2013).
    Overhauling Higher Education by Factoring Sustainability into University Curricula: Discussion Based on a Survey2016In: Metamorphosis of Architectural Education in (Post) Transitional Context / [ed] Mladen Burazor, Markus Schwai, Nermina Zagora, Senka Ibrišimbegović,, Sarajevo: University of Sarajevo , 2016, p. 101-115Chapter in book (Refereed)
  • 37.
    Gräsberg, Frida
    Karlstad University, Faculty of Arts and Social Sciences (starting 2013), Department of Educational Studies (from 2013).
    Förskollärares tolkning av bygg och konstruktion i verksamheten.: En studie om pedagogers möjligheter för undervisning gällande bygg och konstruktion i ämnet teknik.2018Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The purpose of this study was to investigate pre-schooler teachers interpretation and preception of building and construction in technology together with the children. The preschool curriculum states that preschoolers should stive for each child to ''develop their ability to build and construct using differnt techniques, materials and tools'' (Skolverket, 2016, p. 10). To meet answer this purpose, the follwing questions have been the starting point: How do educators interpret the curriculum goal regarding building and construction? And how can the goal be concretized in the activities of the educators? In order to answer the question, interviews have been held at two different preschools with six different legitimized preschool teachers. The results of these interviews show how the pre-schoolers teachers reflected what building and construction were in their activities and what individual preschool teachers perceive is building and construction, how they see their role in involvement in activities is building and construction and the approach to the curriculum goals. The result also takes up the pre-school teachers' thoughts on continuing education on technology in the preschool.

  • 38.
    Grönlund, Emil
    Karlstad University, Faculty of Health, Science and Technology (starting 2013).
    Torkning med skakmoment i diskmaskin: Utredning utav skakningars potential vid disktorknin2016Independent thesis Basic level (university diploma), 15 credits / 22,5 HE creditsStudent thesis
    Abstract [en]

    The drying process of wet dishes is an energy demanding part of a dishwashers wash cycle, the reason for the high energy demand is the need to increase the dishwasher’s inner temperature. The purpose of this work is to examine the possibility to unburden the drying system with a phase that shake water of the dishes before the existing drying system takes over. The goal is be able to lower the heating temperature but still retain the drying result. Another question was to determine what specific energy consumption the new drying method uses and how effective the method is compared with the existing drying system. The study is done by executing test runs with the dishwasher all including a shaking phase to gain knowledge about what kind of shaking that gives the most desired effect. After a reconstruction of the dishwasher it turned out that some reduction of temperature was possible to achieve with an introduced shaking phase and that a lowering of the energy consumption was possible

  • 39.
    Göransson, Alfred
    Karlstad University, Faculty of Technology and Science, Department of Energy, Environmental and Building Technology.
    Naturmuseet Vänern: Energiutredning för att fastställa vilket värmesystem som ger den lägsta energianvändningen2013Independent thesis Basic level (university diploma), 15 credits / 22,5 HE creditsStudent thesis
  • 40.
    Haglund, Mikael
    Karlstad University, Faculty of Health, Science and Technology (starting 2013).
    Kylbehovet hos ett batteribaserat elenergilager: Med avseende på kyldistribution, drifttemperatur, klimat, isolering och termisk tröghet2013Independent thesis Basic level (degree of Bachelor), 15 credits / 22,5 HE creditsStudent thesis
    Abstract [en]

    In 2011 MacBat AB began to develop a electrical energy storage system called Macbat Energy Storage System (MESS), which is made up of 360 two volt lead acid batteries housed in a 20 foot container. However, while lead acid batteries are sensitive to heat this study is focused on investigating how great a cooling demand will be required under different conditions in which chilled distribution, operating temperature of the batteries, climate, insulation and thermal inertia are varied parameters. The study will also determine the configuration of chilled distribution and isolation that gives minimum cooling requirements for the studied climates, which is warm temperate, arid and tropical nature

    To answer the study's two goals four mathematical models were developed in SIMULINK. Two air-cooled and two water-cooled where one of each was insulated with 100 mm mineral wool while the other was bare. For all models the operating temperature varied between 25 - 35 ° C and the studied climates consisted of Phnom Penh, Cambodia, Djibouti, Djibouti, Baghdad, Iraq, and London, England. For the water cooled models thermal inertia was also varied in the range of 1.8058 to 9.0288 MJ/ K by increasing the amount of cooling water in the system used to cool the batteries.

    The battery operating temperature was proven to have the most significant impact on the cooling load. The isolation yielded a reducing effect on the cooling load in the case where the ambient temperature surpassed the battery operating temperature during longer periods. Varying thermal inertia of the water cooled models had little or no impact on the cooling load. It is probably due to the electrolyte in the batteries. It is a considerably larger source of thermal mass and is constant in all the models.

    Which configuration, regarding the distribution system and insulation, that obtains a low cooling requirement was found to depend on the ambient climate and the battery operating temperature. However, warm temperate climates such as London requires no cooling system at all.

  • 41.
    Hannah, Nilsson
    Karlstad University, Faculty of Arts and Social Sciences (starting 2013).
    Pedagogers möjligheter till teknikundervisning i förskolans verksamhet2017Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
  • 42. Hansen, Jens
    Portabel barnmatsberedare: Produktutvecklingsprojekt av en portabel barnmatsberedare2016Independent thesis Basic level (university diploma), 15 credits / 22,5 HE creditsStudent thesis
  • 43.
    Hedefalk, Finn
    et al.
    Karlstad University, Faculty of Technology and Science.
    Pedersen, Markus
    Karlstad University, Faculty of Technology and Science.
    GIS-samordning i Tekniska förvaltningen, Örebro kommun2007Independent thesis Basic level (professional degree), 10 points / 15 hpStudent thesis
    Abstract [en]

    The technical administration in Örebro municipality is responsible of water, sewage, refuse collection, roads, traffic and park care. Nowadays no one has the responsibility of the coordination between the departments. The administration is therefore in need of proposals on new applications and to be compared to other municipalities. The objective of this project was to examine the administration and locate possible problems. It was then to define those problems and give proposals on how to solve them. There wasn’t enough time to examine the whole administration and the project was concentrated to the area of roads and traffic. To be able to investigate the function of the coordination between the departments, it did require interviews with a selected amount of employees. Background material was collected and the questionnaires were created in consultation with the tutor.

    During the interviews, the using of GIS amongst the departments became clear. It occurred that there where some differences of opinions, mainly about a certain node and link – system (each node is a crossroad and each link is a block). One department that is in need of the node and link – system claimed that they didn’t get it and by that means it complicated their work. On the other hand, the department that is responsible of the node and link – system, maintained that the update of the system was well functioning.

    In several interviews it became clear that there was a requirement of a common system to store GIS-data, more education in GIS and a detached group to handle GIS-matters. There were also a lot of other needs within the departments. The conclusion was that the updating of the nodes and links got the highest priority, because the lack of these created most difficulties. A detached GIS-group was suggested to be responsible of the coordination in the departments. This group should get a hold of the education, investigate the possibilities of a common GIS-system, take care of the update process and other matters.

  • 44.
    Hedman, Sanna
    Karlstad University, Faculty of Health, Science and Technology (starting 2013).
    Låsanordning som sammanfogar och tätar sandwichpaneler i temporära byggnader2016Independent thesis Basic level (university diploma), 15 credits / 22,5 HE creditsStudent thesis
    Abstract [en]

    Abstract

    The demand for temporary buildings has increased during the last few years. The main reason for this increase is the need for temporary housing.  This thesis contains the development of a construction solution that locks, joins and seals sandwich panels together in temporary buildings. This solution also explains how to mount, de-mount and re-mount the buildings and was developed in cooperation with the commissioning company Swetech Design AB.

     

    The project has been limited to just the horizontal joints of Swetech Design AB´s sandwich panels. The panels which the construction solution is going to be applied on have the dimensions of 2703 mm in height, 2297 mm in width and a thickness of 206 mm. The core consists of cellular plastic that is laminated with a material that consists of fiberglass and polyester.

     

    The pre-study consisted of literature studies of various types of joints, the important properties needed in order to make an airproof construction and the various building requirements for temporary residents. The pre-study also consisted of a visit to the module building company Mobile Composite Solutions (MCS) which helped in acquiring knowledge of mounting big units and the manufacturing technique RTM. Even inventories in different branches were made, to get knowledge around the different possibilities and variations of locking, sealing and joining parts.

     

    After the completion of the pre-study a requirements specification and two function analysis where made that put demands and requirements on the concept solution and expressed the concept in terms of functions instead of solutions. The requirements specification and the function analysis became the base of the idea generating phase. This phase resulted in partial solutions and complete solutions which were then combined together to establish different concepts. Through elimination methods, screening tools and discussions together with the commissioning company a final concept was chosen. The concept is built on a tension joint in combination with a sealing profile and a locking device made of an angle steel, bolt and nut which can join and seal the sandwich panels.

     

    The concept has been visualized in the form of sketches, CAD-model, a physical model on a cut-out between two sandwich panels in scale 1:1, basic drawings and a component list. A proposal for continued work has also been presented in order to assure that the construction meets all the requirements listed in the requirements specification and to make it possible for the commissioning company to implement the concept.

  • 45.
    Heilborn, Martin
    Karlstad University, Faculty of Arts and Social Sciences (starting 2013), Karlstad Business School.
    Tillgängliga e-tjänster - svenska kommuners arbete med tillgänglighet vid utveckling av e-tjänster2014Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Antalet besökare på svenska kommuners webbsajter bestod år 2005 av drygt 60 procent av internetanvändarna i Sverige. Sedan dess har användandarna ökat precis som medellivslängden i Sverige också har ökat, under 2013 översteg medellivslängden 80 år för första gången hos män. Med en högre ålder ökar risken för olika funktionshinder och idag är det av stor vikt att kommunerna utvecklar sina webbplatser med detta i åtanke.

    Idag erbjuder så gott som alla svenska kommuner e-tjänster där medborgarna kan utföra sina ärenden på ett enklare, snabbare och självständigt sätt när de själva vill. Flera kommunsajter har både hög och bred tillgänglighet vid en första anblick. Dock skiljer sig ofta tillgängligheten markant på en kommuns startsida från den tillgänglighet som man finner på den del av webbplatsen som innehåller kommunens e-tjänster. Denna studie har visat att e-tjänsterna oftast har en lägre tillgänglighet än resten av webbplatsen och därför utesluter flera av de användare som tillhör kommunens målgrupp.

    Syftet med denna studie är att ta reda på varför tillgängligheten är lägre hos e-tjänsterna och vilka som är ansvariga för tillgängligheten och dess låga grad. Tidigare har antagandet gjorts att kommunerna är medvetna om att den bristande tillgängligheten hos e-tjänsterna gör dessa e-tjänster oanvändbara för flera grupper av användare. Den studie som presenteras här visar att en viss medvetenhet om dessa brister finns hos kommunernas utvecklare men även att den är låg.

    Kvalitativa telefonintervjuer har gjorts med fyra utvecklare från svenska kommuners IT-enheter och även en utvecklare hos en e-tjänstleverantör har intervjuats. Flera kunniga personer inom området tillgänglighet har också intervjuats över e-post. Telefonintervjuerna visade varför kommunerna har svårigheter att göra e-tjänsterna tillgängliga för hela sin målgrupp men även hur de arbetar med detta.

  • 46.
    Henriksson, Jessica
    Karlstad University, Faculty of Health, Science and Technology (starting 2013).
    Utformning av företagsentré som speglar Autofrics kompetens och värden2018Independent thesis Basic level (university diploma), 15 credits / 22,5 HE creditsStudent thesis
    Abstract [en]

    This report describes a Project for Degree of Bachelor of Science in Innovation and Design Engineering, performed at Karlstad´s university.

    The purpose of the project has been to come up with a proposal of an entrance for an industrial enterprise. The company is Autofric AB in Hagfors, which produces spirals and spiral conveyers. They used to have a canopy which had to be taken down. The entrance should show the spirit of the company and express quality, and the company also want to fabricate it with their own machines and materials as far as it is possible. Because of this, several examples of how to use the spirals in the entrance has been developed during this project.

    The focus in this project has been on the design of a shell which will become the gestalt. The company will take care of construction for strength. The entrance has been analyzed considering semantics, some laws for construction and some theory of design.

    The project has followed the product development process and it has taken advantage of the strength of models as a visual tool. A collection of cardboard sketches, that grew bigger and bigger during the project, many good advices from an architect and the company´s opinions led to a proposal that fulfills the requirements and requests and gives a solution to the problem.

    It resulted in a canopy, shaped as a half moon, resting on two pillars. The cross section of the pillars is inspired by some of the machines the company manufactures. An illuminated logotype is integrated in the frontage of the canopy. The entrance can be manufactured mainly by the machines and materials available at the company.

  • 47.
    Hurley, Erin
    et al.
    Griffith University.
    Dietrich, Timo
    Griffith University.
    Trischler, Jakob
    Karlstad University, Faculty of Arts and Social Sciences (starting 2013), Service Research Center (from 2013).
    Co‐designing transformative services for sensitive topics2017In: / [ed] Linda Robinson, Linda Brennan, Mike Reid, Mel, 2017, p. 698-701Conference paper (Refereed)
    Abstract [en]

    Transformative service design is dominated by expert-driven design solutions which, as is evidenced in the current context of alcohol education, might not successfully capture user needs. Responding to the call for exploring possible alternatives to conventional design approaches, this study investigates how users can be involved through co-design and what contributions they can make during this process. A six-step co-design process was used to collect and evaluate the qualitative data. Findings show that the recruitment and facilitation stages are key to the success of co-design sessions. Additionally, it was found that the user-designed programs differed from previously expert-designed programs, namely in terms of the delivery platforms used, duration of the program, and the level of adolescent involvement. Ultimately, the study shows that co-design, if fully utilised and users are empowered to contribute actively, can allow for the design of transformative services that are more aligned to the specific user needs.

  • 48.
    Håkansson, Sanna
    Karlstad University, Faculty of Arts and Social Sciences (starting 2013), Karlstad Business School.
    Test av användarvänlighet i system för beslutstöd: En utvärdering av ett dashboard2017Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Alla stora företag idag använder någon form av system för beslutstöd för att samla och analysera data om sina användare eller kunder. Sådana system måste vara extremt användarvänliga för att kunna ge användaren den informationen som behövs utan frustration eller missförstånd av innebörden. För att hitta brister i användarvänligheten bör den testas, sådana tester är idag en självklarhet vid nyutveckling av system och webbsidor. När ett system för beslutstöd testas finns det dock fler variabler än bara principer för god användarvänlighet. Då måste hänsyn tas till visualisering av data för att den ska kunna bli till information på enklast sätt. Efter sökningar i stora databaser stod det klart att tester som tar hänsyn till båda aspekterna saknas. Syftet med uppsatsen är att ta fram ett utvärderingsverktyg som tar hänsyn till både användarvänlighet och visualisering av data och med hjälp av verktyget testa ett system för beslutstöd och hitta dess brister.

     

    Genom en intervju med utvecklare av systemet för beslutstöd kunde syftet med systemet fastställas och ett antal uppdrag utformas för ett test. Fem tester med olika testpersoner genomfördes genom att testpersonerna självständigt fick utföra uppdragen samtidigt som de observerades och fick frågor från det utformade verktyget. Ett antal brister kunde tydligt identifieras och kopplas med anledningen till att information inte kunde förvärvas på ett enkelt sätt. Att viss information inte kunde hittas eller att vissa uppdrag inte gick att lösa på ett korrekt sätt visade sig vara den största bristen. Med hjälp av verktyget kunde orsaker till varför informationen inte kunde hittas identifieras. Den största orsaken till detta var att visualiseringen av grafer och tabeller samt proportioner inte passade för informationen som behövdes. Vidare visade testerna på att verktyget fungerade för att hitta brister och dess orsaker men även att det kan utvecklas ännu mer i framtiden med hjälp av IT för att förenkla processen.   

  • 49.
    Hübsch, Jacob
    et al.
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Mathematics and Computer Science (from 2013).
    Persson, Magnus
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Mathematics and Computer Science (from 2013).
    Förstärkt verklighet med ARCore: Utveckling av en förstärkt verklighetsapplikation i Android med Kotlin och Azure2019Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The technology of “augmented reality” has existed in an experimental stage since the early 1990s, but it is not until around year 2010 that commercial use in the form of both hardware and software became available, for example, when Pokémon GO and Google Glass were announced.

    The aim of this thesis is to develop a mobile application that utilizes the technique of augmented reality to gain an insight into the technique’s potential, as well as the various tools available in this type of development. The project resulted in an augmented reality application, written in the program language Kotlin for the mobile operating system Android. The main use of the application includes group activities such as tourism, as the main functionality is to visualize other users' location via the mobile camera using the tools ARCore and Azure’s database Cosmos DB. Even though the technology is relatively new, the work has progressed without major difficulties, and even with basic programming knowledge it is possible to do software development in this area.

  • 50.
    Israelsson, Viktor
    Karlstad University, Faculty of Technology and Science, Department of Physics and Electrical Engineering.
    Worldizing kontra IR-reverb2011Independent thesis Basic level (university diploma), 15 credits / 22,5 HE creditsStudent thesis
    Abstract [en]

    The purpose of this degree work is to compare two sound design tools, which both are used to virtually place a sound in an acoustic environment. The tools in question are both methods to add reverb on sound files. The angle of the comparison is mainly frequency analysis. Above technicality, practical details are taken into consideration.

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