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  • 151.
    Edforss Fuchs, Inger
    et al.
    Västra Ramlösa skola, Helsingborg.
    Arvola, Mattias
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, Faculty of Arts and Sciences.
    Nyman, Ingemar
    Miljöverkstaden, Helsingborg.
    Szczepanski, Anders
    Linköping University, Department of Culture and Communication, Arts, Crafts and Design. Linköping University, Faculty of Arts and Sciences.
    Slutrapportering av VASS-projektet “Virtuell värld möter autentisk värld i ett sinnligt, samlat lärande"2015Report (Other academic)
    Abstract [en]

    Utgångspunkten för VASS-projektet var att närmare undersöka hur IKT fungerar i ett utomhuspedagogiskt och läroplansstyrt sammanhang med elever i årskurs 4, 5, 6 och 7. VASS står för virtuell värld möter en reell i ett sinnligt och samlat lärande.

    VASS-projektet har genomförts av Västra Ramlösa skola och Miljöverkstaden i Helsingborg samt Nationellt för centrum i utomhuspedagogik (NCU) och SICS East Swedish ICT Research Faculty båda vid Linköpings universitet. Projektet, som löpt under tiden 2012 – 2015, blev möjligt efter stöd från Marcus och Amalia Wallenbergs minnesfond på 1,3 miljoner kronor. Projektledare har varit Inger Edforss Fuchs som är förstelärare på Västra Ramlösa skola i Helsingborg.

    Det fanns tre huvudsakliga utgångspunkter i projektet:

    • Undervisningen styrs av en läroplan som ger en utgångspunkten för undervisningen i skolan och därmed också för lektioner som kopplats till projektet.
    • Var vi bedriver undervisningen, det vill säga platsrelationen, har en stor betydelse för elevernas lärande. Detta pedagogiska perspektiv och grundsyn relaterad till undervisningen och lärandets var-aspekt karakteriserar utomhuspedagogik.
    • En undervisning i ett utomhuspedagogiskt sammanhang kan bedrivas med hjälp av IKT.

    Det finns en del olika exempel på att använda IKT i kombination med utomhuspedagogik, men det centrala i just det här projektet var den nära anknytningen till läroplanen och dess mål där utomhuspedagogiken fanns med som en utgångspunkt.

    Vi väljer här att redovisa projektet med fyra olika essäer som var och en representerar olika perspektiv. Inger Edforss Fuchs inleder med att beskriva det arbete som bedrivits på hennes skola i Helsingborg. Ingemar Nyman vill framhålla de miljöpedagogiska vinster som skolorna kan nå genom att använda IT i ett utomhuspedagogiskt arbete. Mattias Arvola, som forskar i gränsytan mellan människa och digitala enheter, beskriver det utvecklingsarbete som bedrivits inom projektets ram på hans enhet vid Linköpings universitet. Till sist så ger Anders Szczepanski sin syn på hur ett utomhuspedagogiskt arbete, som är IT understött, påverkar elever och lärares syn på lärandet.

    Till sist vill vi tacka Marcus och Amalia Wallenbergs minnesfond för att de ville understödja projektet. Projektet hade inte kommit till stånd utan och vi hade då inte heller kunnat nå så långt med det viktiga arbetet med att utveckla skolornas användning av IKT i ett läroplansstyrt och utomhuspedagogiskt sammanhang.

    Helsingborg i juni 2015

    Inger Edforss Fuchs, Projektledare

    Mattias Arvola

    Ingemar Nyman

    Anders Szczepanski

  • 152.
    Edling, Erik
    et al.
    Linköping University, Department of Computer and Information Science, Human-Centered systems.
    Östergren, Emil
    Linköping University, Department of Computer and Information Science, Human-Centered systems.
    An analysis of microservice frameworks2017Independent thesis Basic level (degree of Bachelor), 10,5 credits / 16 HE creditsStudent thesis
    Abstract [en]

    Microservice architecture has entered the industry to solve some of the problems with the monolithic architecture. However, this architecture comes with its own set of problems. In order to solve the microservice architecture problems while also providing additional functionalities, microservice frameworks have been developed. In this thesis, microservice frameworks were compared and thereafter two were chosen to implement a small part of a large monolithic system as microservices. This was done in order to see how well they could implement the different functionalities that the frameworks provided in relation to the benefits and the cross-cutting concerns of the microservice architecture which are concerns that is applicable to the entire system. The results showed that the frameworks embraced the benefits of the microservice architecture in the aspects of maintainability and scalability. However, in the terms of being able to change frameworks in the pursuit of newer technologies there were problems. Some functionalities such as service discovery requires all of the new services created to use the same mechanism in order to create a unified system. There were also problems caused by the load balancing mechanism provided by the frameworks used in this thesis. The load balancing mechanism made the system unable to send large data files which was crucial for the system that was to be implemented as a microservice system.

  • 153.
    Edqvist, Elias
    et al.
    Linköping University, Department of Computer and Information Science, Human-Centered systems.
    Chilangwa, Artur
    Linköping University, Department of Computer and Information Science, Human-Centered systems.
    Chattbot som assistent vid ett IT-konsultbolag2019Independent thesis Basic level (degree of Bachelor), 10,5 credits / 16 HE creditsStudent thesis
    Abstract [sv]

    Intresset för chattbotar är idag mycket stort och de används i många olika områden. Det finns många tillvägagångssätt för att implementera chattbotar, ett av dessa sätt är med verktyget Hubot. Detta arbete undersöker hur effektiv en chattbot utvecklad med Hubot är med avseende på användbarhet och responstid. Användbarheten bedömdes med hjälp av System Usablity Scale (SUS) med 8 testpersoner. Resultatet visade att chattboten hade en relativt låg användbarhet (64,38 poäng enligt SUS), men mycket snabba responstider. Detta indikerade att Hubot inte är en effektiv chattbotlösning i detta arbetes kontext

  • 154.
    Einarsson, Anna
    et al.
    Royal Coll Mus Stockholm, Sweden.
    Ziemke, Tom
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, Faculty of Science & Engineering. University of Skovde, Sweden.
    Exploring the Multi-Layered Affordances of Composing and Performing Interactive Music with Responsive Technologies2017In: Frontiers in Psychology, ISSN 1664-1078, E-ISSN 1664-1078, Vol. 8, article id 1701Article in journal (Refereed)
    Abstract [en]

    The question motivating the work presented here, starting from a view of music as embodied and situated activity, is how can we account for the complexity of interactive music performance situations. These are situations in which human performers interact with responsive technologies, such as sensor-driven technology or sound synthesis affected by analysis of the performed sound signal. This requires investigating in detail the underlying mechanisms, but also providing a more holistic approach that does not lose track of the complex whole constituted by the interactions and relationships of composers, performers, audience, technologies, etc. The concept of affordances has frequently been invoked in musical research, which has seen a "bodily turn" in recent years, similar to the development of the embodied cognition approach in the cognitive sciences. We therefore begin by broadly delineating its usage in the cognitive sciences in general, and in music research in particular. We argue that what is still missing in the discourse on musical affordances is an encompassing theoretical framework incorporating the sociocultural dimensions that are fundamental to the situatedness and embodiment of interactive music performance and composition. We further argue that the cultural affordances framework, proposed by Rietveld and Kiverstein (2014) and recently articulated further by Ramstead et al. (2016) in this journal, although not previously applied to music, constitutes a promising starting point. It captures and elucidates this complex web of relationships in terms of shared landscapes and individual fields of affordances. We illustrate this with examples foremost from the first authors artistic work as composer and performer of interactive music. This sheds new light on musical composition as a process of construction-and embodied mental simulation-of situations, guiding the performers and audiences attention in shifting fields of affordances. More generally, we believe that the theoretical perspectives and concrete examples discussed in this paper help to elucidate how situations-and with them affordances-are dynamically constructed through the interactions of various mechanisms as people engage in embodied and situated activity.

  • 155.
    Ekholm, David
    et al.
    Linköping University, Department for Studies of Social Change and Culture, Centre for Municipality Studies – CKS. Linköping University, Faculty of Arts and Sciences.
    Holmlid, Stefan
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, Faculty of Science & Engineering.
    Idrott för integration – så blir satsningen hållbar2018In: Svensk Idrottsforskning: Organ för Centrum för Idrottsforskning, ISSN 1103-4629, no 25 oktoberArticle in journal (Other (popular science, discussion, etc.))
    Abstract [sv]

    Idrott används allt oftare som verktyg för integration och mot utanförskap. Midnattsfotboll är ett exempel. Hur organiserar man en sådan verksamhet och vad är avgörande för att den ska fungera långsiktigt?

    Det blir allt vanligare att använda idrott som ett verktyg för sociala ändamål, både internationellt och i Sverige. Ofta sker det i samverkan mellan kommuner och idrottsföreningar.

    Vi studerar två fall av så kallad Midnattsfotboll i två svenska städer. Verksamheten arrangeras i samverkan mellan en nationell stiftelse, lokala idrottsföreningar, kommun och sponsorer. Vi tittar på hur man går tillväga för att etablera respektive verksamhet, för att identifiera vad som är viktigt för att de ska överleva och bli långsiktiga.

  • 156.
    El Ghoul, Fares
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, Faculty of Arts and Sciences.
    Heuristisk Utvärdering av Tidningsställ: Att utvärdera icke-interaktiva gränssnitt2013Independent thesis Basic level (degree of Bachelor), 12 credits / 18 HE creditsStudent thesis
    Abstract [sv]

    Syftet med projektet är att utveckla heuristiker lämpade för utvärdering av ett tidningsställ samt att testa dessa heuristiker genom att utföra en heuristisk utvärdering på två tidningsställ. Skapandet av nya heuristiker skedde iterativt i olika steg och granskades av utomstående personer under processen. Efter flera omskrivningar testades heuristikerna och deras relevansvärde i ett mindre test av tre försökspersoner. Efter att de nya heuristikerna färdigställts återstod det att utföra en formell heuristisk utvärdering av de båda tidningsställen utifrån de färdigställda heuristikerna. Den heuristiska utvärderingen som utfördes skedde i enlighet med Nielsens metod och även i enlighet med Baker et al. (2002). Med hjälp av heuristikerna lyckades försökspersonerna upptäcka alla tidigare upptäckta allvarliga problem och nästan alla tidigare upptäckta mindre allvarliga problem. Detta tyder på att heuristikerna var lämpade att användas till heuristiska utvärderingar av tidningsställ. Utvärderingen visade även att det finns en skillnad mellan de båda tidningsställena och att den nyare modellen är en klar förbättring över den gamla.

  • 157.
    Eldén, Lars
    et al.
    Linköping University, Department of Mathematics, Computational Mathematics. Linköping University, The Institute of Technology.
    Merkel, Magnus
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, The Institute of Technology.
    Ahrenberg, Lars
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, The Institute of Technology.
    Fagerlund, Martin
    Linköping University, Department of Mathematics, Computational Mathematics. Linköping University, The Institute of Technology.
    Computing Semantic Clusters by Semantic Mirroring and Spectral Graph Partitioning2013In: Mathematics in Computer Science, ISSN 1661-8270, Vol. 7, p. 293-313Article in journal (Refereed)
    Abstract [en]

    Using the technique of semantic mirroring a graph is obtained that represents words and their translationsfrom a parallel corpus or a bilingual lexicon. The connectedness of the graph holds information about the semanticrelations of words that occur in the translations. Spectral graph theory is used to partition the graph, which leadsto a grouping of the words in different clusters. We illustrate the method using a small sample of seed words froma lexicon of Swedish and English adjectives and discuss its application to computational lexical semantics andlexicography.

  • 158.
    Engström, André
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, The Institute of Technology.
    Gymlog, en webbapplikation för personer som är vana att träna på gym2013Independent thesis Basic level (university diploma), 10,5 credits / 16 HE creditsStudent thesis
    Abstract [sv]

    Syftet med denna rapport är att undersöka om det går att utveckla en användbarwebbapplikation som underlättar resultathantering för vana gymutövare. Eftersomrapporten endast fokuserar på vana gymutövare, undkommer webbapplikationenproblemet med alldeles för mycket valmöjligheter som gör den osmidig. Vidareundersöks om webbapplikationen även kan motivera användaren till bättre prestationer.Webbapplikationen är utvecklad med hjälp av de grafiska gränssnittskomponenterna somSmart GWT tillhandahåller. Rapporten innehåller en teoretisk bakgrund till deutvecklingsverktyg som använts för att ta fram webbapplikationen.I resultatet framgår att det finns potential att ta fram en fullt fungerande webbapplikationför vana gymutövare. I dagsläget går det dock inte att utvärdera webbapplikationen fulltut då den befinner sig i ett tidigt stadium av utvecklingsprocessen. Då applikationenerbjuder viss inmatning och visualisering av resultat kan detta ge motivation tillanvändaren, genom att de har möjlighet att jämföra sina prestationer. Vidare framgår det iresultatet att det bör finnas ett komplement till inmatning för att det ytterligare skaunderlätta resultathanteringen för användaren.

  • 159.
    Erhard-Olsson, Niklas
    Linköping University, Department of Computer and Information Science, Human-Centered systems.
    Procedural Generation of 2D Levels for a Motion-based Platformer Game in Unity with Large Amount of Movement2018Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    This thesis mainly describes and implements a new way of analyzing motion generated when playing a motion controlled game. It also describes the implementation of automatic level generation together with the utilization of Unitys excellent new 2D tools. The motion controller used to play the prototype game is ported and implemented with Unitys own shader language and stored as a reusable prefab for any Unity project. A new specific method of analyzing the motion mapped to the level is implemented in Unity. Some game specific analysises is presented with the said method, and examples of how the method can be used for more and richer analysis’s is discussed.

  • 160.
    Ericsson, Anna
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, Faculty of Arts and Sciences.
    Informationsbehov hos förstainsatspersoner, SOS Alarm och blåljusaktörer vid räddningsinsatser2013Independent thesis Basic level (degree of Bachelor), 12 credits / 18 HE creditsStudent thesis
    Abstract [sv]

    Tillgång till relevant information är av stor vikt för SOS Alarm, polis, ambulans, räddningstjänst och förstainsatspersoner. Likaså kan brist på information försvåra en räddningsinsats då det kan orsaka en försämrad situationsmedvetenhet hos aktörerna som kan göra det svårare för dem att fatta goda beslut. En utforskande studie utfördes för att ge en första inblick i vilken information som är viktig för dessa aktörer, vilken information de använder sig av, vilken information de saknar och hur tillgången till information kan påverka situationsmedvetenheten hos aktörerna. Semistrukturerade intervjuer med Critical decision method som utgångspunkt utfördes med nio deltagare där fokus låg på informationsbehov. Två huvudsakliga informationsområden visade sig vara en beskrivning av olyckan och dess geografiskt läge. En del försvårande omständigheter som kan förhindra flödet av information mellan aktörerna kunde även urskiljas. Ett vanligt förekommande problem, framförallt för SOS Alarm och blåljusaktörer, är att förstainsatspersoner inte alltid stannar på olycksplatser vilket kan orsaka en brist på information både gällande olyckans geografiska läge och detaljer kring vad som hänt. Utifrån det uppkomna resultatet föreslås att den teknik som nyttjas i framtiden bör utvecklas så att den stödjer aktörernas situationsmedvetenhet.

  • 161.
    Eriksson, Daniel
    Linköping University, Department of Computer and Information Science, Human-Centered systems.
    Algorithmic Design of Graphical Resources for Games Using Genetic Algorithms2017Independent thesis Basic level (degree of Bachelor), 10,5 credits / 16 HE creditsStudent thesis
    Abstract [en]

    Producing many varying instances of the same type of graphical resource for games can be of interest, such as trees or foliage. But when randomly generating graphical resources, you can often end up with many similar looking results or perhaps results that doesn't look like what it is meant to look like. This work investigates whether genetic algorithms can be applied to produce greater varying results when generating graphical resources by basing the fitness of each individual for each genetic generation on how similar the graphical resource is to previously generated resources. This work concludes from the limited work that was performed that while it seems possible that the use of genetic algorithms might be able to produce visually different graphical resources, Blender currently doesn't seem to be able to produce enough results in a reasonable time frame for this to be usable on a large scale.

  • 162.
    Eriksson, Henrik
    et al.
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, Faculty of Science & Engineering.
    Timpka, Toomas
    Linköping University, Department of Medical and Health Sciences, Division of Community Medicine. Linköping University, Faculty of Medicine and Health Sciences. Region Östergötland, Center for Health and Developmental Care, Center for Public Health. Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, Faculty of Science & Engineering.
    Spreco, Armin
    Linköping University, Department of Medical and Health Sciences, Division of Community Medicine. Linköping University, Faculty of Medicine and Health Sciences.
    Dahlström, Örjan
    Linköping University, Department of Medical and Health Sciences. Linköping University, Faculty of Medicine and Health Sciences.
    Strömgren, Magnus
    Dept. of Social and Economic Geography, Umeå University, Umeå, Sweden.
    Holm, Einar
    Dept. of Social and Economic Geography, Umeå University, Umeå, Sweden.
    Dynamic Multicore Processing for Pandemic Influenza Simulation.2016In: AMIA Annual Symposium Proceedings, American Medical Informatics Association , 2016, Vol. 2016, p. 534-540Conference paper (Refereed)
    Abstract [en]

    Pandemic simulation is a useful tool for analyzing outbreaks and exploring the impact of variations in disease, population, and intervention models. Unfortunately, this type of simulation can be quite time-consuming especially for large models and significant outbreaks, which makes it difficult to run the simulations interactively and to use simulation for decision support during ongoing outbreaks. Improved run-time performance enables new applications of pandemic simulations, and can potentially allow decision makers to explore different scenarios and intervention effects. Parallelization of infection-probability calculations and multicore architectures can take advantage of modern processors to achieve significant run-time performance improvements. However, because of the varying computational load during each simulation run, which originates from the changing number of infectious persons during the outbreak, it is not useful to us the same multicore setup during the simulation run. The best performance can be achieved by dynamically changing the use of the available processor cores to balance the overhead of multithreading with the performance gains of parallelization.

  • 163.
    Eriksson, Joel
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, The Institute of Technology.
    Utveckling av ett verktyg för länkning och bedömning av översättningar2015Independent thesis Basic level (degree of Bachelor), 10,5 credits / 16 HE creditsStudent thesis
    Abstract [sv]

    Idag finns det m˚anga system f¨or att bed¨oma och tolka ¨overs¨attningar av texter. Det finns system som l¨ankar delar av en k¨alltext och en ¨overs¨attning, det finns en ¨aven tekniker f¨or att bed¨oma ¨overs¨attningar f¨or ge ett m˚att p˚a hur bra de ¨ar. Ett exempel p˚a en s˚adan teknik ¨ar Token Equivalence Method(TEM). Det finns dock f˚a program, om n˚agra, som utnyttjar b˚ade l¨ankning och bed¨omning p˚a ett s˚adant s¨att att de skulle kunna vara anv¨andbara vid till exempel spr˚akutbildningar. I detta arbete utvecklas just ett s˚adant program. Programmet som skapats kan segmentera och l¨anka parallella texter mot varandra helt automatiskt via inkopplade system. F¨or att ¨oka anv¨andarv¨anligheten s˚a visualiserar programmet ¨aven l¨ankningen och till˚ater redigering av b˚ade segmentering och l¨ankning. L¨ankningen utnyttjas sedan f¨or att r¨akna ut och visa delar av TEM f¨or att ge ett m˚att p˚a ¨overs¨attningens kvalit´e.

  • 164.
    Eriksson, Nils
    et al.
    Linköping University, Department of Computer and Information Science, Human-Centered systems.
    Ärleryd, Christofer
    Linköping University, Department of Computer and Information Science, Human-Centered systems.
    Elmulating JavaScript2016Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Functional programming has long been used in academia, but has historically seen little light in industry, where imperative programming languages have been dominating. This is quickly changing in web development, where the functional paradigm is increasingly being adopted.

    While programming languages on other platforms than the web are constantly competing, in a sort of survival of the fittest environment, on the web the platform is determined by the browsers which today only support JavaScript. JavaScript which was made in 10 days is not well suited for building large applications. A popular approach to cope with this is to write the application in another language and then compile the code to JavaScript. Today this is possible to do in a number of established languages such as Java, Clojure, Ruby etc. but also a number of special purpose language has been created These are languages that are made for building front-end web applications. One such language is Elm which embraces the principles of functional programming. In many real life situation Elm might not be possible to use, so in this report we are going to look at how to bring the benefits seen in Elm to JavaScript.

  • 165.
    Esperance Rodrigues, Vanessa
    et al.
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, Faculty of Science & Engineering.
    Holmlid, Stefan
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, Faculty of Science & Engineering.
    Discovering Service Variations through Service Prototyping2017In: Design journal, ISSN 1460-6925, E-ISSN 1756-3062, Vol. 20, p. S2247-S2257Article in journal (Refereed)
    Abstract [en]

    Designing services require embracing the variability that makes it unique. This paper investigates how the use of a service prototyping technique enables participants to explore the variations inherent in services. The video data are analyzed using qualitative content analysis and the articulated variations are abstracted as categories. The resulting categories are then mapped across the service logic framework and the corresponding provider, joint and patient spheres. This paper aims to contribute to research on service prototyping by augmenting the use of prototyping methods to gain an understanding of the sources and possibly types of variations in a particular service. It clarifies how prototyping a service allows people untrained in design to diagnose variations that may occur in a future service and the decision-making process in accommodating variation. Further, the knowledge gained enables improved value co-creation opportunities in a service.

  • 166.
    Fahlborg, Daniel
    et al.
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, Faculty of Science & Engineering.
    Rennes, Evelina
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, Faculty of Science & Engineering. RISE SICS East, Linköping, Sweden.
    Introducing SAPIS – an API Service for Text Analysis and Simplification2016Conference paper (Refereed)
    Abstract [en]

    In several projects, we are developing tools and techniques for simplifying and analyzing textual data, aiming to enhance the accessibility of texts. We present SAPIS, an API service by which these techniques can be reached from a remote server. The API currently involves four running services, and is designed for easy implementation of new services. SAPIS aims to reach professional or daily users interested in the simplification and analysis of texts.

  • 167.
    Falk, Joakim
    Linköping University, Department of Computer and Information Science, Human-Centered systems.
    Usability guided development of a participant database system2018Independent thesis Basic level (degree of Bachelor), 10,5 credits / 16 HE creditsStudent thesis
    Abstract [en]

    This project consisted of the development of a web based participant database system to replace a spreadsheet based one for the project “Vi Ses! Språkvänner i Linköping” and the evaluation of it. The design and implementation was done iteratively using a collection of usability guidelines as well as the results of a set of user tests. User tests were also used for the evaluation of the web database system. The task during the user tests was participant matching and the main measurement taken was task completion time.

    The project resulted in a web database system that could fully replace the spreadsheet database system. The evaluation tests showed that this system was both faster to match participants in as well as less error prone.

  • 168.
    Falkenjack, Johan
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, Faculty of Science & Engineering.
    Towards a Model of General Text Complexity for Swedish2018Licentiate thesis, monograph (Other academic)
    Abstract [en]

    In an increasingly networked world, where the amount of written information is growing at a rate never before seen, the ability to read and absorb written information is of utmost importance for anything but a superficial understanding of life's complexities. That is an example of a sentence which is not very easy to read. It can be said to have a relatively high degree of text complexity. Nevertheless, the sentence is also true. It is important to be able to read and understand written materials. While not everyone might have a job where they have to read a lot, access to written material is necessary in order to participate in modern society. Most information, from news reporting, to medical information, to governmental information, come primarily in a written form.

    But what makes the sentence at the start of this abstract so complex? We can probably all agree that the length is part of it. But then what? Researches in the field of readability and text complexity analysis have been studying this question for almost 100 years. That research has over time come to include many computational and data driven methods within the field of computational linguistics.

    This thesis cover some of my contributions to this field of research, though with a main focus on Swedish rather than English text. It aims to explore two primary questions (1) Which linguistic features are most important when assessing text complexity in Swedish? and (2) How can we deal with the problem of data sparsity with regards to complexity annotated texts in Swedish?

    The first issue is tackled by exploring the task of identifying easy-to-read ("lättläst") text using classification with Support Vector Machines. A large set of linguistic features is evaluated with regards to predictive performance and is shown to separate easy-to-read texts from regular texts with a very high accuracy. Meanwhile, using a genetic algorithm for variable selection, we find that almost the same accuracy can be reached with only 8 features. This implies that this classification problem is not very hard and that results might not generalize to comparing less easy-to-read texts.

    This, in turn, brings us to the second question. Except for easy-to-read labeled texts, the data with text complexity annotations is very sparse. It consist of multiple small corpora using different scales to label documents. To deal with this problem, we propose a novel statistical model. The model belongs to the larger family of Probit models and is implemented in a Bayesian fashion and estimated using a Gibbs sampler based on extending a well established Gibbs sampler for the Ordered Probit model. This model is evaluated using both simulated and real world readability data with very promising results.

  • 169.
    Falkenjack, Johan
    et al.
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, The Institute of Technology. Santa Anna IT Research Institute AB, Linköping, Sweden.
    Heimann Mühlenbock, Katarina
    Språkbanken, University of Gothenburg, Gothenburg.
    Using the probability of readability to order Swedish texts2012In: Proceedings of the Fourth Swedish Language Technology Conference, 2012, p. 27-28Conference paper (Refereed)
    Abstract [en]

    In this study we present a new approach to rank readability in Swedish texts based on lexical, morpho-syntactic and syntactic analysis of text as well as machine learning. The basic premise and theory is presented as well as a small experiment testing the feasibility, but not actual performance, of the approach. The experiment shows that it is possible to implement a system based on the approach, however, the actual performance of such a system has not been evaluated as the necessary resources for such an evaluation does not yet exist for Swedish. The experiment also shows that a classifier based on the aforementioned linguistic analysis, on our limited test set, outperforms classifiers based on established metrics used to assess readability such as LIX, OVIX and Nominal Ratio.

  • 170.
    Falkenjack, Johan
    et al.
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, The Institute of Technology. SICS East Swedish ICT AB .
    Heimann Mühlenbock, Katarina
    Göteborgs Universitet.
    Jönsson, Arne
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, The Institute of Technology. SICS East Swedish ICT AB .
    Features indicating readability in Swedish text2013In: Proceedings of the 19th Nordic Conference of Computational Linguistics (NODALIDA 2013) / [ed] Stephan Oepen, Kristin Hagen, Janne Bondi Johannesse, Linköping, 2013, p. 27-40Conference paper (Refereed)
    Abstract [en]

    Studies have shown that modern methods of readability assessment, using automated linguistic analysis and machine learning (ML), is a viable road forward for readability classification and ranking. In this paper we present a study of different levels of analysis and a large number of features and how they affect an ML-system’s accuracy when it comes to readability assessment. We test a large number of features proposed for different languages (mainly English) and evaluate their usefulness for readability assessment for Swedish as well as comparing their performance to that of established metrics. We find that the best performing features are language models based on part-of-speech and dependency type.

  • 171.
    Falkenjack, Johan
    et al.
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, Faculty of Science & Engineering.
    Rennes, Evelina
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, Faculty of Science & Engineering.
    Fahlborg, Daniel
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, Faculty of Science & Engineering.
    Johansson, Vida
    Linköping University, Department of Computer and Information Science. Linköping University, Faculty of Arts and Sciences.
    Jönsson, Arne
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, Faculty of Arts and Sciences.
    Services for text simplification and analysis2017In: Proceedings of the 21st Nordic Conference on Computational Linguistics, NoDaLiDa, Linköping University Electronic Press, 2017, Vol. 131, p. 309-313, article id 044Conference paper (Refereed)
    Abstract [en]

    We present a language technology service for web editors’ work on making texts easier to understand, including tools for text complexity analysis, text simplification and text summarization. We also present a text analysis service focusing on measures of text complexity.

  • 172.
    Falkenjack, Johan
    et al.
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, Faculty of Science & Engineering. SICS East Swedish ICT AB, Linköping, Sweden.
    Santini, Marina
    Linköping University, Department of Computer and Information Science, Human-Centered systems. SICS East Swedish ICT AB, Linköping, Sweden.
    Jönsson, Arne
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, Faculty of Arts and Sciences. SICS East Swedish ICT AB, Linköping, Sweden.
    An Exploratory Study on Genre Classification using Readability Features2016Conference paper (Other academic)
    Abstract [en]

    We present a preliminary study that explores whether text features used for readability assessment are reliable genre-revealingfeatures. We empirically explore the difference between genre and domain. We carry out two sets of experiments with bothsupervised and unsupervised methods. Findings on the Swedish national corpus (the SUC) show that readability cues are goodindicators of genre variation.

  • 173.
    Fallgren, Per
    et al.
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, Faculty of Science & Engineering.
    Segeblad, Jesper
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, Faculty of Science & Engineering.
    Kuhlmann, Marco
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, Faculty of Science & Engineering.
    Towards a Standard Dataset of Swedish Word Vectors2016In: Proceedings of the Sixth Swedish Language Technology Conference (SLTC), 2016Conference paper (Refereed)
    Abstract [en]

    Word vectors, embeddings of words into a low-dimensional space, have been shown to be useful for a large number of natural language processing tasks. Our goal with this paper is to provide a useful dataset of such vectors for Swedish. To this end, we investigate three standard embedding methods: the continuous bag-of-words and the skip-gram model with negative sampling of Mikolov et al. (2013a), and the global vectors of Pennington et al. (2014). We compare these methods using QVEC-CCA (Tsvetkov et al., 2016), an intrinsic evaluation measure that quantifies the correlation of learned word vectors with external linguistic resources. For this propose we use SALDO, the Swedish Association Lexicon (Borin et al., 2013). Our experiments show that the continuous bag-of-words model produces vectors that are most highly correlated to SALDO, with the skip-gram model very close behind. Our learned vectors will be provided for download at the paper’s website.

  • 174.
    Farzi, Saeed
    et al.
    University of Tehran.
    Faili, Heshaam
    University of Tehran.
    Khadivi, Shahram
    Amirkabir University of Technology.
    Maleki, Jalal
    Linköping University, Department of Computer and Information Science, Human-Centered systems.
    A Novel Reordering Model for Statistical Machine Translation2013In: Reserach in Computing Science: Advances in Natural Language Processing and Intelligent Learning Environments / [ed] Grigori Sidorov (Mexico), Gerhard Ritter ( USA ), Jean Serra (France ), Ulises Cortés ( Spain ), Mexico, 2013, p. 51-64Conference paper (Refereed)
    Abstract [en]

    Word reordering is one of the fundamental problems of machine translation, and an important factor of its quality and efficiency. In this paper, we introduce a novel reordering model based on an innovative structure, named, phrasal dependency tree including syntactical and statistical information in context of a log-linear model. The phrasal dependency tree is a new modern syntactic structure based on dependency relations between contiguous non-syntactic phrases. In comparison with well-known and popular reordering models such as the distortion, lexicalized and hierarchical models, the experimental study demonstrates the superiority of our model regarding to the different evaluation measures. We evaluated the proposed model on a PersianEnglish SMT system. On average our model retrieved a significant impact on precision with comparable recall value respect to the lexicalized and distortion models, and is found to be effective for medium and long-distance reordering.

  • 175.
    Fernandez-Luque, Luis
    et al.
    Salumedia Com, Spain; Qatar Comp Research Institute, Qatar.
    Vimarlund, Vivian
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, Faculty of Science & Engineering.
    Borycki, Elizabeth
    University of Victoria, Canada.
    Schulz, Stefan
    Graz University, Austria.
    Kuziemsky, Craig
    University of Ottawa, Canada.
    Marschollek, Michael
    Hannover Medical Sch, Germany; Technical University of Carolo Wilhelmina Braunschweig, Germany.
    Kulikowski, Casimir A.
    Rutgers State University, NJ USA.
    Social Media as Catalyzer for Connected Health: Hype or Hope? Perspectives from IMIA Working Groups2016In: NURSING INFORMATICS 2016: EHEALTH FOR ALL: EVERY LEVEL COLLABORATION - FROM PROJECT TO REALIZATION, IOS PRESS , 2016, Vol. 225, p. 602-604Conference paper (Refereed)
    Abstract [en]

    The Internet and social media are becoming ubiquitous technologies that are transforming the health sector. Social media has become an avenue for accessing, creating and sharing health information among patients and healthcare professionals. Furthermore, social media has become a key feature in many eHealth solutions, including wearable technologies, Big Data solutions, eLearning systems, Serious Games, Medical imaging, etc. These hyper-connected technologies are facilitating a paradigm shift towards more connected health. In this panel, representatives of different IMIA Working Groups will explore how both hope and hype contribute to social medias catalyzing role in creating connected health solutions.

  • 176.
    Field, Joris
    et al.
    Netherlands Aerospace Centre NLR, Amsterdam, the Netherlands.
    Rankin, Amy
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, Faculty of Arts and Sciences.
    Mohrmann, Frederik
    Netherlands Aerospace Centre NLR, Amsterdam, the Netherlands.
    Boland, Edzard
    Netherlands Aerospace Centre NLR, Amsterdam, the Netherlands.
    Woltjer, Rogier
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, Faculty of Arts and Sciences.
    Flexible Procedures to Deal with Complex Unexpected Events in the Cockpit2017In: Proceedings of the 7th REA symposium, Sophia Antipolis Cedex, France: Resilience Engineering Association , 2017Conference paper (Refereed)
    Abstract [en]

    Modern airliner operations consist of an environment with multiple detailed procedures to cover critical abnormal events and with systems that are automated and highly reliable. Complex and unexpected events are rare and may thus present a challenge to the crew to deal with, putting demands on the resilience of the crew. In the EU Man4Gen project a “flexible procedure” was developed as a strategy to assist flight crew in dealing with unexpected events where an existing procedure was not available. This procedure is intended to assist crews in adapting their response to the situation and be more flexible in their application of their procedures and training to increase the effectiveness of their response. This paper describes the procedure and its development within the project based on two sets of flight simulator experiments with operational flight crew. The resulting flexible procedure consists of steps to help crews manage time criticality, manage (un)certainty and finally to plan for contingencies and changes. This forms the basis of the discussion of how procedures can be a source of resilience in the cockpit, rather than forming a barrier to it.

  • 177.
    Fjellström, Jonatan
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, Department of Management and Engineering, Machine Design.
    Gaze Interaction in Modern Trucks2014Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    In this master thesis project carried out on Scania’s interaction design department in Södertälje an evaluation of the technology gaze interaction has been done. The aim was to see if the technology was suitable for implementation in a truck environment and what potential it had. The work started by doing a context analysis to get a deeper knowledge of the research done on within the area related to the subject. Following the context analysis a comprehensive need finding process was done. In this process, data from interviews, observations, ride along with truck drivers, benchmarking and more was analysed. The analysis of this was used to identify the user needs. Based on the user needs the concept development phase was conducted. The whole development phase was done in different stages and started off by an idea generation process. The work flow was made in small iterations with the idea to continuously improve the concepts. All concepts were evaluated in a concept scoring chart to see which of the concepts that best fulfilled the concept specifications. The concepts that best could highlight the techniques strengths and weaknesses were chosen and these are Head Up Display Interaction and Gaze Support System.. These concepts focused on the interaction part of the technique rather than a specific function. Test of the two concepts were conducted in a simulator to get data and see how they performed compared to today´s Scania trucks. The result overall was good and the test subjects were impressed with the systems. However there was no significance in most of the cases of driving except for some conditions where the concepts prove to be better than the systems used today. Gaze interaction is a technology that is suitable for a truck driving environment given that a few slight improvements are made. Implementation of the concepts have a good potential of reducing road accidents caused by human errors. 

  • 178.
    Flycht-Eriksson (Silvervarg), Annika
    et al.
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, Faculty of Arts and Sciences.
    Gulz, Agneta
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, Faculty of Arts and Sciences.
    Haake, Magnus
    Division of Cognitive Science, Lund University, Lund, Sweden.
    Perseverance is crucial for learning. “OK! But can I take a break?"2018In: Artificial Intelligence in Education 19th International Conference, AIED 2018, London, UK, June 27–30, 2018, Proceedings, Part I / [ed] Carolyn Penstein Rosé, Roberto Martínez-Maldonado, H. Ulrich Hoppe, Rose Luckin, Manolis Mavrikis, Kaska Porayska-Pomsta, Bruce McLaren and Benedict du Boulay, Springer Berlin/Heidelberg, 2018, Vol. 10947, p. 532-544Conference paper (Refereed)
    Abstract [en]

    In a study with 108 10- to 12-year-olds who used a digital educational game targeting history, we addressed the phenomenon of perseverance, that is, the tendency to stick with a task even when it is challenging. The educational game was designed to make all students encounter tasks they did not succeed to solve, at which point they were offered a set of choices corresponding to perseverance and non-perseverance. Methods used were behavioral log data, post-questionnaires, and an in-game questionnaire conducted by a game character, who asked the students about the reason for their choice. Overall, we found no differences between high and low-perseverance students as to their experiences of effort, difficulty, and learning, and neither in their self-reported motives for persevering – when doing so. With respect to performance, however, high-persevering students solved significantly more tasks at higher difficulty levels. Comparing high-perseverance students who tended to take a break directly after a failed test – before they continued with the same task – with those who did not take a break, we found no significant differences, indicating that taking a break is not detrimental to learning and perseverance.

  • 179.
    Foglieni, Francesca
    et al.
    Politecnico di Milano, Italy.
    Holmlid, Stefan
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, Faculty of Science & Engineering.
    Determining Service Value: Exploring the Link Between Value Creation and Service Evaluation2017In: Service Science, ISSN 2164-3962, E-ISSN 2164-3970, Vol. 9, no 1, p. 74-90Article in journal (Refereed)
    Abstract [en]

    Starting from the evolution of the service-dominant logic and critiques emerging from this, the purpose of this paper is to explore the link between value creation and service evaluation in order to understand what can be evaluated in a service, when and from which perspective, to ascertain its value.

    Even though in theory of service logic there is a quite clear understanding of service value creation dynamics, a reflection is missing on how to measure that value. The authors thus take on the concept of service evaluation as a further development of service logic, introducing a possible way to approach it.

    Bridging service logic studies and evaluation studies in the field of social sciences, this paper identifies temporal aspects of service evaluation, and possible evaluation objects and objectives that are meaningful for the service provider in value-facilitation activities and for the service user in value-creation activities. A framework is developed and some considerations are done upon shifting the reflection on value creation from theory to an evaluation practice.

  • 180.
    Forsblad (Kristiansson), Mattias
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, Faculty of Arts and Sciences.
    Distributed cognition in home environments: The prospective memory and cognitive practices of older adults2016Doctoral thesis, monograph (Other academic)
    Abstract [en]

    In this thesis I explore how older people make use of, and interact with, their physical environment in home and near-by settings to manage cognitive situations, specifically prospective memory situations. Older adults have in past research been shown to perform better on prospective memory in real-life settings than what findings in laboratory-like settings predict. An explanation for this paradox is that older adults has a more developed skill of using the environment for prospective memory than younger adults. However, research investigating this explanation has primarily been based on self-reports.

    I contribute to the understanding of this skill by doing two related things. First I introduce distributed cognition, a theoretical perspective that primarily has been used within professional and socio-technical environments, to the research field of prospective memory in everyday life. Second I present a cognitive ethnography conducted during two years across eight home, and near-by, environments and old-age retired persons, for which I have used theoretical concepts from distributed cognition to analyze observations.

    The analysis shows rich variations in how participants use common cultural cognitive tools, invent their own cognitive tools, deliberately and incidentally shape more or less functional spaces, make use of other physical features, orient themselves toward and make sense of cognitive resources. I complement both prospective memory and distributed cognition research by describing both the intelligent shaping and use of space. Furthermore, by taking a distributed cognitive perspective I show that prospective memory processes in home environments involve properties, and the management, of a multipurpose environment.

    Altogether this supports the understanding of distributed cognition as a perspective on all cognition. Distributed cognition is not a reflection of particular work practices, instead it is a formulation of the general features of human cognition. Prospective memory in everyday life can be understood as an ability persons have. However, in this thesis I show that prospective memory can also be understood as a process that takes place between persons, arrangements of space, and tools.

  • 181.
    Forsyth, Katherine
    et al.
    Mayo Clinic, Robert D. and Patricia E. Kerns Center for the Science of Health Care Delivery, Rochester, MN, USA / Mayo Clinic, Department of Health Sciences Research, Rochester, MN, USA.
    Lowndes, Bethany
    Mayo Clinic, Robert D. and Patricia E. Kerns Center for the Science of Health Care Delivery, Rochester, MN, USA / Mayo Clinic, Department of Health Sciences Research, Rochester, MN, USA.
    Prytz, Erik
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, Faculty of Arts and Sciences.
    Jonson, Carl-Oscar
    Region Östergötland, Center for Disaster Medicine and Traumatology. Linköping University, Faculty of Medicine and Health Sciences.
    Matthew, Sztajnkrycer
    Mayo Clinic, Department of Surgery, Rochester, MN, USA.
    Heller, Stephanie
    Mayo Clinic, Department of Emergency Medicine, Rochester, MN, USA.
    Hallbeck, Susan
    Mayo Clinic, Robert D. and Patricia E. Kerns Center for the Science of Health Care Delivery, Rochester, MN, USA / Mayo Clinic, Department of Health Sciences Research, Rochester, MN, USA.
    Blocker, Renaldo
    Mayo Clinic, Robert D. and Patricia E. Kerns Center for the Science of Health Care Delivery, Rochester, MN, USA / Mayo Clinic, Department of Health Sciences Research, Rochester, MN, USA.
    Improving Instructions to Stop the Bleed2017In: Proceedings of the Human Factors and Ergonomics Society 2017 Annual Meting, Santa Monica: Human Factors and Ergonomics Society, HFES , 2017, p. 588-592Conference paper (Refereed)
    Abstract [en]

    The Stop The Bleed initiative was developed by the Department of Homeland Security to educate lay providers in bleeding reduction strategies. The current study evaluated: (1)three tourniquet instructions using a simulated tourniquet task and (2)participant confidence levels in tourniquet use and lay provider training. Thirty participants with limited clinical experience applied a tourniquet to a simulated limb using one of three instruction sets. Twelve of these participants (40%) participated in a tourniquet training session and focus group to discuss each instruction set. Participants preferred the most simple and pictoral instruction set, and identified opportunities for improvement in each set. Participant confidence in tourniquet use increased significantly following the task and the focus group. After the focus group, participant confidence in instructing lay providers on proper tourniquet use significantly increased. Adding key steps, contextual pictures, and indicators of success to instructions could support lay providers stop the bleed in life-threatening situations

  • 182.
    Fransson, Simon
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, The Institute of Technology.
    MoSync för multi-plattformsutveckling till smartphones2014Independent thesis Basic level (university diploma), 10,5 credits / 16 HE creditsStudent thesis
    Abstract [en]

    This is a thesis that is done on behalf of Meal Planning Concepts AB. The goal was to developa native multi-platform application for smartphones and tablets that would work on Android and iOS, and share database with their current web system. The functionality would be based on that found on their website. The application was developed in MoSync which is a framework that is capable of multiplatform development. The purpose with the thesis was also to evaluate MoSync during the project and present other similar tools and how they behave compared to MoSync. The report showcases the work and problems encountered during the development of the application as well as the end result. The pilot study showed that there were many othertools that focused on support for multiple platforms. Frameworks raised were jQuery Mobile, PhoneGap and Marmalade where the latter was the tool that was the most similar to MoSync. MoSync proved to be a framework in which all the company's requirements for functionality could be met except for a design simplification. Some drawbacks were that it was slightly buggy and that the community was small.

  • 183.
    Franzén, Ellen
    et al.
    Linköping University, Department of Computer and Information Science, Human-Centered systems.
    Gonera, Mikael
    Linköping University, Department of Computer and Information Science, Human-Centered systems.
    Live Language Coach-App: Svenska som andraspråk2016Independent thesis Basic level (degree of Bachelor), 10,5 credits / 16 HE creditsStudent thesis
    Abstract [sv]

    Denna studie syftar till att genom designforskning undersöka hur det pedagogiska greppet Learning in the wild kan implementeras i en applikation, Live Language Coach­app, för att stödja och uppmuntra inlärning av svenska som andraspråk. Den primära målgruppen för applikationen är nyanlända till Sverige. I denna studie har författarna utforskat och dokumenterat olika konceptuella angreppssätt för en implementation av Learning in the wild i Live Language Coach­app och ger i studien förslag på en exprimentell lösning som kan arbetas vidare på. Metoder som använts för datainsamling är: intervjuer med målgruppen för applikationen. Skapandet av personas utifrån intervjuerna, som tillsammans med med intressenterna har använts för att skapa kravgenereingar som applikationen ska svara emot. Olika designförslag och prototyper har skapats genom iterativa processer som sedan utvärderats, testats och ställts emot gjorda kravgenereringar. Resultatet visar på att det finns ett behov hos målgruppen att få kontakt med svensktalande och att Live Language Coach­app måste facilitera kontakten mellan 1 svensktalande och målgruppen på ett enkelt och snabbt sätt för motivera dem till att ta mera initiativ till interaktion i vardagen.

  • 184.
    Franzén, Ida
    Linköping University, Department of Computer and Information Science, Human-Centered systems.
    Limitations with Using Role Play for Experiential Learning2019Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Among researchers within the design area, role play is often spoken about in a positive manner. This study aims to discover the limitations with role play as a tool for experiential learning. This is done by evaluating a prototype of an early-stage concept of a role play-tool. The tool is aimed for Swedish SMEs to raise awareness and create curiosity of guanxi, which is a vital part of Chinese business culture. The tool is compared to another experiential-based tool, Experience Map, with the same purpose but based on real scenarios rather than simulated scenarios.

    Prototype testing with intended users identified the difficulty of giving instructions on cultural behaviour as one limitation. This limitation is especially difficult in settings where the participants have no previous knowledge within the area, which is the case for this study. Another limitation is the challenge of giving enough instructions for the players to act on, without interrupting the exploration aspect of the tool. Besides, the target group seem to prefer more hands-on tools that are more relevant for their specific business and less time-consuming. The main difference between the tools is that the experience map which is based on real scenarios, creates a greater interest among participants and a higher level of the participants’ willingness to use it.

  • 185.
    Fredstam, Marcus
    et al.
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, Faculty of Science & Engineering.
    Johansson, Gabriel
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, Faculty of Science & Engineering.
    Comparing database management systems with SQLAlchemy: A quantitative study on database management systems2019Independent thesis Basic level (university diploma), 10,5 credits / 16 HE creditsStudent thesis
    Abstract [en]

    Knowing which database management system to use for a project is difficult to know in advance. Luckily, there are tools that can help the developer apply the same database design on multiple different database management systems without having to change the code. In this thesis, we investigate the strengths of SQLAlchemy, which is an SQL toolkit for Python.

    We compared SQLite, PostgreSQL and MySQL using SQLAlchemy as well as compared a pure MySQL implementation against the results from SQLAlchemy.

    We conclude that, for our database design, PostgreSQL was the best database management system and that for the average SQL-user, SQLAlchemy is an excellent substitution to writing regular SQL.

  • 186.
    Friberg, Joy
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, The Institute of Technology.
    Evaluation of cross-platform development for mobile devices2014Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Developing an application for several platforms can be time consuming because each platform has its own operating system and different developing language. Cross-platform development makes it possible to develop an ap-plication that will work on several platforms. This report will evaluate this kind of development by doing a case study for the company CGI. The case study will evaluate which cross-platform methodology is the preferred choice for this specific vacation booking application I developed for CGI.

    The different methodologies I studied were web, hybrid, interpreted and cross-compiled. The preferred methodology for this vacation booking application I developed was in this case the hybrid alternative. When selecting this methodology I also chose two different tools and those two were Icenium and jQuery Mobile. The purpose of this report was to find out if cross-platform development can be a substitute to native programming and by evaluating and developing cross-platform I found out that it can be a substitute if the application is not to complex. In this specific case I also believe that hybrid development is a good substitute to native development for this kind of applications.

  • 187.
    Frisk, Oskar
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, Faculty of Arts and Sciences.
    Organisationsintern information: Förslag till ett digitalt stöd för kommunikation och informationsutbyte inom företag och organisationer2015Independent thesis Basic level (degree of Bachelor), 12 credits / 18 HE creditsStudent thesis
    Abstract [sv]

    Kommunikation och informationsspridning är en viktig aktivitet inom företag och organisationer. Mycket av detta sköts i dagsläget digitalt i varierande form så som mail, chatt och intranät med sociala flöden. I vissa fall kan olika metoder för kommunikation bli överbelastade medan andra blir åsidosatta, alla metoder har några positiva aspekter som kan används för att eventuellt underlätta den digitala kommunikationen inom företag och organisationer. Denna studie undersöker just detta, hur sköts intern kommunikation inom företag och organisationer idag och hur kan de positiva aspekterna av det integreras i en lösning. Genom intervjuer med anställda inom olika företag och organisationer specificerades hur kommunikation kan skötas idag, vad det finns för krav på kommunikationsmetoderna samt deras positiva respektive negativa egenskaper. Med intervjuerna som grund genomfördes en skissprocess där olika förslag vägdes emot varandra. Det förslag som presenteras är det som uppfyllde största antal krav och integrerade flest positiva aspekter.

  • 188.
    Fröberg, Anders
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, The Institute of Technology.
    Models and Tools for Distributed User Interface Development2012Licentiate thesis, comprehensive summary (Other academic)
    Abstract [en]

    The way we interact with computers and computer systems are constantly changing as technology evolves. A current trend is that users interact with multiple andinterconnected devices on a daily basis. They are beginning to request ways and means of dividing and spreading their applications acrossthese devices.Distributed user interfaces (DUIs) have been proposed as a means ofdistributing programs over multiple interconnected devices through theuser interface (UI). DUIs represent a fundamental change foruser-interface design, enabling new ways of developing distributedsystems that, for instance, support runtime reorganization ofUIs. However developing DUIs presents a far more complex task compared totraditional UI development, due to the inherent complexity thatarises from combining UI development with distributed systems. Thetraditional approach in software engineering and computer science toovercoming complexity is to build tools and frameworks, to allowfor good code reuse and higher level of abstraction for applicationprogramers.Conventional GUI programming tools and frameworks are not developedto support DUIs specifically. In this thesis we explore key issues increating new programming tools and frameworks (APIs) for DUI-based UIdevelopment. We also present and discuss the DUI framework Marve,which adds DUI support to Java Swing.A unique feature of Marve is that it is designedfor industrial-scale development, extending a standard UIframework. The framework has beentested and evaluated in a project where an operator control stationsystem was developed.

  • 189.
    Gavelin, Simon
    et al.
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, The Institute of Technology.
    Beck-Norén, Gustav
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, The Institute of Technology.
    Styling av vektorkartor i mobila enheter2013Independent thesis Basic level (university diploma), 10,5 credits / 16 HE creditsStudent thesis
    Abstract [en]

    Mobile systems which are used professionally are often developed for professions whom work outside of the office.

    Map presentation is an important component which is used as a foundation to show application specific data or to handle input of information out in the field.Map information or geodata is often handled in two separated formats. First raster information which is picture data and second vector information. Vector data consists of areas, lines and points which have mathematical definitions. Vector data have the advantage by being resolution independent, very accurate and more space efficient than raster data. Unlike raster data vector data does not store information about how it should be presented visually. The presentation can be implemented using source code but it is much more productive to use a style language. In the same way CSS works with HTML. There are a variety of style languages which are applicable on vector maps.

    Within this thesis we dives deeper into the existing methods of styling vector maps but also look at alternative solutions. A prototype application is to be constructed to implement the chosen solutions.Finally are we going to apply the tested solutions on the existing GIS-application created by IT-bolaget Per&Per.

  • 190.
    Gavin, Jacob
    et al.
    Linköping University.
    Hammarbäck, Jimmy
    Linköping University.
    Hammarbäck, Madeleine
    Linköping University.
    Helmersson, Benjamin
    Linköping University.
    Nyberg, Martina
    Linköping University.
    Svensson, Cassandra
    Linköping University.
    Foo, Jody
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, Faculty of Science & Engineering.
    Koch, Felix-Sebastian
    Linköping University, Department of Behavioural Sciences and Learning, Psychology. Linköping University, Faculty of Arts and Sciences.
    An eye-tracking study on the importance of consistent terminology2014In: Proceedings of the Fifth Swedish Language Technology Conference (SLTC-14), 2014Conference paper (Refereed)
    Abstract [en]

    Using inconsistent terminology, e.g. having different terms in documentation and e.g. labels and menu items in a user interface is believed to be confusing to users. However, few empirical studies exist on this particular topic. In this paper we show how users' interaction with an interface is affected by inconsistent terminology. An experimental eye-tracking study with 30 participants was conducted where the participants were shown a user interface and a task description. The terminology in the interface and task description was manipulated to be either consistent or inconsistent. The results show that terminological inconsistencies led to a significantly higher number of visual fixations, more time needed to perform the task, and more returns to the task description. The conclusion is that inconsistent use of terms create unnecessary cognitive workload for the user that can be avoided by ensuring terminological consistency within a system.

  • 191.
    Gawell, Elin
    et al.
    Linköping University, Department of Computer and Information Science, Human-Centered systems.
    Hedvall, Maria
    Linköping University, Department of Computer and Information Science, Human-Centered systems.
    Att designa en produkt för vuxna med ADHD och/eller autismspektrumtillstånd2016Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    To live as an adult diagnosed with attention deficit hyperactivity disorder, ADHD and/or autism spectrum disorder, ASD, can be a challenge in everyday life. To help them in their daily lives, a concept that solves an everyday problem has been developed. The experience acquired from the development of the product concept have been summarized in a way that it can be used by other product developers, and thereby make products in the future more adopted to people with ADHD and/or ASD.

    Different areas have been studied to enable development of the concept. These areas are information about the diagnoses, guidelines to develop products for people with ADHD and ASD as well as what kind of cognitive assistive technology there is on the market for people with ADHD and ASD that is useful in their everyday life. The development process has consisted of idea generations, one of those where executed with people diagnosed with ADHD/ASD or with knowledge about the diagnoses, concept development with a concept evaluation with people diagnosed with ADHD/ASD or with knowledge about the diagnoses, detailed design of chosen concept and usability testing after which further modification has been made.

    The conclusion drawn from this work is that there are characteristic features of ADHD and ASD that are relevant to the development of a product concept. There are existing guidelines for designers when designing for adults with the diagnoses, but it is more common with guidelines when designing for children with these diagnoses. The guidelines that have been identified are in the areas of interior design, user centered design and interaction design. These guidelines don’t create understanding for the individuals with diagnoses regarding both a design- and a psychological perspective. The compiled insights presented in this thesis can be used by other product developers without knowledge about the diagnoses and make products more adopted to people with ADHD and/or ASD in the future.

  • 192.
    Glansberg, Sven
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, The Institute of Technology.
    Presentation av reservdelskatalog med modellbaserat konstruktionsunderlag: En fallstudie av Saabs konceptutveckling för teknikinformation till stridsflygplanet Gripen NG2012Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    In the military aerospace industry, product data management in the product lifecycle, and development of logistics support are key areas that affect management of requirements and costs. The most recent strategy for these challenges is model-based definition (MBD). The discipline of technical communication has yet to explore and exploit the potential of MBD. Expected benefits include better ways of presenting illustrations and more efficient methodologies for production.

    This problem was investigated through a case study of the concept development of technical communication for Saab's fighter aircraft Gripen NG. The study focused on the illustrated parts catalog and its use. This work contributes with a model that describes four design levels for information systems, where presentation is the one in focus. In addition, comparable practices for management of MBD data were investigated in the case.

    The study found that the technical communication department is facing a transition from document-based management to development of information systems. Furthermore, three proposals for the next generation of parts catalogs are discussed. Two conclusions were reached. First, a lack of knowledge regarding the use of the parts catalog makes it difficult to assess new ways of presentation. And second, the improvements made in methodology and presentation in other MBD applications of the product life cycle are not immediately transferable to the parts catalog. Hence, suggestions for future research and work are presented.

  • 193.
    Granlund, Helena
    et al.
    Santa Anna IT Research Institute, Linköping, Sweden.
    Granlund, Rego
    Santa Anna IT Research Institute, Linköping, Sweden.
    Dahlbäck, Nils
    Linköping University, Department of Computer and Information Science, NLPLAB - Natural Language Processing Laboratory. Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, Faculty of Arts and Sciences.
    The Effect of a GPS on Learning with regards to Performance and Communication in Municipal Crisis Response2011In: Universal Access in Human-Computer Interaction. Applications and Services, Part IV / [ed] Stephanidis, Constantine, Springer Berlin/Heidelberg, 2011, p. 215-224Conference paper (Refereed)
    Abstract [en]

    This paper describes the basic learning aspects of crises management training in a computer simulated environment. A total of 108 professionals, 18 teams, contributed to the study where the impact of a GPS on C2 work was investigated. A comparison between professional groups on performance and learning show that the GPS has an impact that differed depending on the teams professional composition.

  • 194.
    Granlund, Rego
    et al.
    Santa Anna IT Research Institute, Linköping, Sweden.
    Granlund, Helena
    Santa Anna IT Research Institute, Linköping, Sweden.
    Dahlbäck, Nils
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, Faculty of Arts and Sciences.
    Differences between Students and Professionals while using a GPS Based GIS in an Emergency Response Study2011In: Engineering Psychology and Cognitive Ergonomics / [ed] Harris, Don, Springer Berlin/Heidelberg, 2011, p. 374-383Conference paper (Refereed)
    Abstract [en]

    This paper describes the results and differences between students and professionals who used a GPS based GIS as a collaborative tool in an experimental emergency response study. A total of 132 students, forming 22 groups and 108 professionals forming 18 groups were tested. Differences in both performance and behaviors between the groups have been identified. In the discussion we reflect on the importance to be aware of the participants’ background and behaviors while selecting the participants in an experimental study.

  • 195.
    Granlund, Rego
    et al.
    Linköping University, Department of Computer and Information Science. Linköping University, The Institute of Technology.
    Granlund, Helena
    Linköping University, Department of Computer and Information Science. Linköping University, The Institute of Technology.
    Dahlbäck, Nils
    Linköping University, Department of Computer and Information Science, NLPLAB - Natural Language Processing Laboratory. Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, Faculty of Arts and Sciences.
    Johansson, Björn
    Swedish Defence Research Agency.
    The Effect of a Geographical Information System on Communication in Professional Emergency Response Organizations2010In: ISCRAM 2010, 7th International Conference on Information Systems for Crisis Response and Management, ISCRAM , 2010Conference paper (Refereed)
    Abstract [en]

    This paper describes the basic communication analysis performed in a research project with an ambition to investigate the impact of geographical information system (GIS) on crisis management organizations. The goal is to compare the communication between command and control teams that have access to a GIS with geographical position information (GPS) capability in its command post with teams that only have access to paper maps. The method used is controlled experiments using the C3Fire micro-world. A total of 108 professionals, forming 18 teams, participated in the study. The participating professionals were members of Swedish municipal crisis management organizations. The result shows that the communication pattern connected to giving orders have a different distribution depending on if the teams used GIS or paper maps. The result also shows that the communication volume is reduced if the teams use GIS.

  • 196.
    Gränsbo, Gustav
    Linköping University, Department of Computer and Information Science, Human-Centered systems.
    Word Clustering in an Interactive Text Analysis Tool2019Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    A central operation of users of the text analysis tool Gavagai Explorer is to look through a list of words and arrange them in groups. This thesis explores the use of word clustering to automatically arrange the words in groups intended to help users. A new word clustering algorithm is introduced, which attempts to produce word clusters tailored to be small enough for a user to quickly grasp the common theme of the words. The proposed algorithm computes similarities among words using word embeddings, and clusters them using hierarchical graph clustering. Multiple variants of the algorithm are evaluated in an unsupervised manner by analysing the clusters they produce when applied to 110 data sets previously analysed by users of Gavagai Explorer. A supervised evaluation is performed to compare clusters to the groups of words previously created by users of Gavagai Explorer. Results show that it was possible to choose a set of hyperparameters deemed to perform well across most data sets in the unsupervised evaluation. These hyperparameters also performed among the best on the supervised evaluation. It was concluded that the choice of word embedding and graph clustering algorithm had little impact on the behaviour of the algorithm. Rather, limiting the maximum size of clusters and filtering out similarities between words had a much larger impact on behaviour.

  • 197.
    Gulz, Agneta
    et al.
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, Faculty of Science & Engineering. Kognitionsvetenskap, Lunds univeristet.
    Haake, Magnus
    Kognitionsvetenskap, Lunds univeristet.
    Inför digitala nationella prov2014In: Svenska dagbladet, ISSN 1101-2412, article id 2 januariArticle in journal (Other (popular science, discussion, etc.))
    Abstract [sv]

    Digitala system för pedagogisk bedömning öppnar nya möjligheter som inte finns med papper och penna. Dessutom frigörs tid för lärarna. Vi ber därför Skolverket att tillsätta en bred arbetsgrupp för att utveckla ett digitalt system för nationella prov.

  • 198.
    Gulz, Agneta
    et al.
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, The Institute of Technology.
    Haake, Magnus
    Department of Design SciencesLund UniversitySweden.
    Silvervarg, Annika
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, The Institute of Technology.
    Extending a Teachable Agent with a Social Conversation Module – Effects on Student Experiences and Learning2011In: Artificial Intelligence in Education: 15th International Conference, AIED 2011, Auckland, New Zealand, June 28 – July 2011 / [ed] Gautam Biswas, Susan Bull, Judy Kay, Antonija Mitrovic, Springer, 2011, p. 106-114Chapter in book (Refereed)
    Abstract [en]

    The paper discusses the addition of off-task socially oriented conver-sational abilities to an existing “teachable agent” (TA) in an educational game in mathematics. The purpose of this extension is to affect constructs known to promote learning, such as self-efficacy and engagement as well as enhance students’ experiences of interacting with the game. A comparison of students that played the game with the off-task interaction to those who played without it, shows trends that indicate that students who played the game with off-task interaction had a more positive experience of the game, and that they also learnt more, as reflected in the learning outcomes of their TAs.

  • 199.
    Haglund, Jesper
    et al.
    Linköping University, Department of Social and Welfare Studies, Learning, Aesthetics, Natural science. Linköping University, Faculty of Arts and Sciences.
    Jeppsson, Fredrik
    Linköping University, Department of Social and Welfare Studies, Learning, Aesthetics, Natural science. Linköping University, Faculty of Educational Sciences.
    Ahrenberg, Lars
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, The Institute of Technology.
    Taking advantage of the "Big Mo": Momentum in everyday english and swedish and in physics teaching2015In: Research in science education, ISSN 0157-244X, E-ISSN 1573-1898, Vol. 45, no 3, p. 345-365Article in journal (Refereed)
    Abstract [en]

    Science education research suggests that our everyday intuitions of motion and interaction of physical objects fit well with how physicists use the term “momentum”. Corpus linguistics provides an easily accessible approach to study language in different domains, including everyday language. Analysis of language samples from English text corpora reveals a trend of increasing metaphorical use of “momentum” in non-science domains, and through conceptual metaphor analysis, we show that the use of the word in everyday language, as opposed to for instance “force”, is largely adequate from a physics point of view. In addition, “momentum” has recently been borrowed into Swedish as a metaphor in domains such as sports, politics and finance, with meanings similar to those in physics. As an implication for educational practice, we find support for the suggestion to introduce the term “momentum” to English-speaking pupils at an earlier age than what is typically done in the educational system today, thereby capitalising on their intuitions and experiences of everyday language. For Swedish-speaking pupils, and possibly also relevant to other languages, the parallel between “momentum” and the corresponding physics term in the students’ mother tongue could be made explicit.

  • 200.
    Hajdinjak, Matic
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, The Institute of Technology.
    Towards a mobile user interface used for monitoring purposes in context of a Geographical Information System2013Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Mobile Geographical Information Systems are becoming a more and more important tool for presenting geographical data. They are used to support decision making processes, present an overview of distributed information or are in a form of location based services. The problem lies in the fact that mobile devices have limited resources and should still be able to present massive amounts of content. Ideally, the user and the conditions in which the program runs are well defined, but this is usually not the case. This thesis provides a sample prototype implementation of a mobile GIS developed as an alternative to an existing web-based user interface (UI). It focuses on specific conditions present on mobile devices, ways of presenting the data and possibilities of reusing existing elements from the web UI that could be suitable for the mobile environment.

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