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  • 101.
    Blomkvist, Johan
    et al.
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, The Institute of Technology.
    Segelström, Fabian
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, The Institute of Technology.
    External Representations in Service Design: A Distributed Cognition Perspective2013In: EAD 2013: Crafting the Future, Gothenburg, Sweden, 2013, Vol. 10Conference paper (Refereed)
    Abstract [en]

    A defining characteristic of service design is the use of external representations which support the design process at various stages. Representations support designers in making intangible aspects of services accessible and shareable, making external representations especially important in service design. External representations are used both to represent current and future states, for the purposes of articulating insights, learning, communicating, collaborating, and maintaining empathy for customers. Many techniques are available that support designers in making representations of services. A comparison was made between the purposes for, and techniques used, in making external representations for service design with theories from cognitive science about benefits of using external representations to think. A pattern emerged during the analysis, indicating that the service design techniques could be divided into two groups, one of interactive techniques and one group of static techniques. Interactive techniques allow designers to interact with a dynamically changing representation, while static representations are unaffected by actions. The analysis also revealed that none of the included techniques explicitly support designers in making multiple simultaneous representations of services. The research contributes knowledge about how purposes for visualising and prototyping are related to general benefits of making external representations. It also provides insights about how to choose and use different service design techniques based on theories of distributed and situated cognition.

  • 102.
    Blomkvist, Johan
    et al.
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, The Institute of Technology.
    Segelström, Fabian
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, The Institute of Technology.
    Holmlid, Stefan
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, The Institute of Technology.
    Investigating Prototyping Practices of Service Designers from a Service Logic Perspective2011Conference paper (Other academic)
    Abstract [en]

    The view of the nature of services has changed with the introduction of the service dominant logic. An important part of the logic is that services create value-in-use for customers. Customer-focused disciplines such as many design disciplines have a history of working with prototyping to understand the value-in-use. The service design discipline has a similar approach to the development of services. Based on previous research a framework of perspectives on service prototyping is presented which can be used to understand the prototyping approach utilised by designers. Then, using four of the suggested foundational premises of the service dominant logic this paper examines some of the ways prototyping can support the understanding and development of value propositions. The analysis shows that prototypes and the development and testing of them with customers and users can be seen as a tool for making sure that the value propositions offered by the companies are right, as well as exploring the customer’s role as a co-creator of value. The prototyping framework can be used to practically manifest the service-dominant logic in the development of service prototypes.

  • 103.
    Blomkvist, Johan
    et al.
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, Faculty of Arts and Sciences.
    Åberg, Johan
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, The Institute of Technology.
    Holmlid, Stefan
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, The Institute of Technology.
    Formative Evaluation of IT-based Services: A Case Study of a Meal Planning Service2014In: Interacting with computers, ISSN 0953-5438, E-ISSN 1873-7951, Vol. 26, no 6, p. 540-556Article in journal (Refereed)
    Abstract [en]

    To evaluate and develop a service supported by an IT (information technology) system the intentionto use the future service should be in focus. The technology acceptance model (TAM) and the theoryof planned behaviour (TPB) can both provide knowledge about users’ intention to use a service,making them good models to base formative decisions on. Unlike TAM, TPB is concerned withspecific information related to the service context, and provide knowledge about what makes ITuseable.We used an adapted version of the TPB as the foundation for a formative service evaluationtechnique called F-SET.We applied the F-SET to a case where two subsequent versions of a serviceprototype were evaluated. The first prototype was a description of the service supported by Hi-Fidesign sketches showing what a web-based meal planning tool could look like. The second prototypeconsisted of both service processes and the web-based meal planning tool.To find relevant factors thatinfluence future use of such a service, a survey of 28 informants was conducted with the first prototype.The second prototype involved five families who used the service for two weeks.The feedback providedby the families, based on the factors identified in the pre-test, influenced the future direction of theservice development. Feedback from the informants was distributed between the service and the ITsystem, and the most common factors that influence the intention to use the service were time, price,usefulness and availability. Feedback included both positive and negative comments, as well as bugsand suggestions for improvements.We discuss potential improvements and what kind of informationto expect from the different constructs of the TPB.

  • 104.
    Blomkvist, Johan
    et al.
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, The Institute of Technology.
    Åberg, Johan
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, The Institute of Technology.
    Holmlid, Stefan
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, The Institute of Technology.
    Service Walkthroughs to Support Service Development2012In: ServDes.2012 Conference Proceedings Co-Creating Services; The 3rd Service Design and Service Innovation Conference, Espoo, Finland, 2012, p. 43-52Conference paper (Refereed)
    Abstract [en]

    Service design is said to be a holistic design approach. This is evident in most service design literature and textbooks but still services are prototyped by focusing on separate parts rather than whole service journeys. In this paper we propose a technique called service walkthrough that can be used to represent whole services. We explore what information can be generated using the technique and how useful it is. We found that the technique helped identify the flow of information, problematic areas, and design opportunities. The prototype was generally well received by the participants. In addition to earning about information, the technique also revealed insights about time and interdependencies of the various parts of the service. Some remarks are also made about when the service walkthrough can be used in the service development process and considerations concerning the fidelity of service walkthroughs.

  • 105.
    Blomqvist, Eva
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, The Institute of Technology.
    The use of Semantic Web technologies for decision support – a survey2014In: Semantic Web, ISSN 1570-0844, E-ISSN 2210-4968, Vol. 5, no 3, p. 177-201Article in journal (Refereed)
    Abstract [en]

    The Semantic Web shares many goals with Decision Support Systems (DSS), e.g., being able to precisely interpret information, in order to deliver relevant, reliable and accurate information to a user when and where it is needed. DSS have in addition more specific goals, since the information need is targeted towards making a particular decision, e.g., making a plan or reacting to a certain situation. When surveying DSS literature, we discover applications ranging from Business Intelligence, via general purpose social networking and collaboration support, Information Retrieval and Knowledge Management, to situation awareness, emergency management, and simulation systems. The unifying element is primarily the purpose of the systems, and their focus on information management and provision, rather than the specific technologies they employ to reach these goals. Semantic Web technologies have been used in DSS during the past decade to solve a number of different tasks, such as information integration and sharing, web service annotation and discovery, and knowledge representation and reasoning. In this survey article, we present the results of a structured literature survey of Semantic Web technologies in DSS, together with the results of interviews with DSS researchers and developers both in industry and research organizations outside the university. The literature survey has been conducted using a structured method, where papers are selected from the publisher databases of some of the most prominent conferences and journals in both fields (Semantic Web and DSS), based on sets of relevant keywords representing the intersection of the two fields. Our main contribution is to analyze the landscape of semantic technologies in DSS, and provide an overview of current research as well as open research areas, trends and new directions. An added value is the conclusions drawn from interviews with DSS practitioners, which give an additional perspective on the potential of Semantic Web technologies in this field; including scenarios for DSS, and requirements for Semantic Web technologies that may attempt to support those scenarios.

  • 106.
    Blomqvist, Eva
    et al.
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, The Institute of Technology.
    Gangemi, AldoISTC-CNR.Hammar, KarlJönköping University.Suárez-Figueroa, María del Carmen
    Proceedings of the 3rd Workshop on Ontology Patterns, Boston, USA, November 12, 20122012Conference proceedings (editor) (Other academic)
  • 107.
    Blomqvist, Eva
    et al.
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, The Institute of Technology.
    Groza, Tudor
    Proceedings of the ISWC 2013 Posters & Demonstrations Track, Sydney, Australia, October 23, 20132013Conference proceedings (editor) (Other academic)
  • 108.
    Blomqvist, Eva
    et al.
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, The Institute of Technology.
    Hammar, Karl
    Computer Science and Informatics, School of Engineering, Jönköping University, Sweden.
    Presutti, Valentina
    Institute of Cognitive Sciences and Technologies, Italy.
    Engineering Ontologies with Patterns: The eXtreme Design Methodology2016In: Ontology Engineering with Ontology Design Patterns: Foundations and Applications / [ed] Pascal Hitzler, Aldo Gangemi, Krzysztof Janowicz, Adila Krisnadhi, Valentina Presutti, IOS Press, 2016, p. 23-50Chapter in book (Other academic)
    Abstract [en]

    When using Ontology Design Patterns (ODPs) for modelling new parts of an ontology, i.e., new ontology modules, or even an entire ontology from scratch, ODPs can be used both as inspiration for different modelling solutions, as well as concrete templates or even “building blocks” reused directly in the new solution. This chapter discusses how ODPs, and in particular Content ODPs

    In fact, throughout this chapter when mentioning ODPs, this mainly refers to Content ODPs if not specified further.

    , can be used in ontology engineering. In particular, a specific ontology engineering methodology is presented, which was originally developed for supporting ODP use. However, this methodology, the eXtreme Design (XD), also has some characteristics that set it apart from most other ontology engineering methodologies, and which may be interesting to consider regardless of how much emphasis is put on the ODP usage. Towards the end of the chapter some XD use cases are also reported and discussed, as well as lessons learned from applying XD. The chapter is concluded through a summary and discussion about future work.

  • 109.
    Blomqvist, Eva
    et al.
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, Faculty of Arts and Sciences.
    Hitzler, Pascal
    Wright State University, OH 45435 USA.
    Janowicz, Krzysztof
    University of Calif Santa Barbara, CA 93106 USA.
    Krisnadhi, Adila
    Wright State University, OH 45435 USA; University of Indonesia, Indonesia.
    Narocke, Tom
    Marymount University, VA USA.
    Solanki, Monika
    University of Oxford, England.
    Editorial Material: Considerations regarding Ontology Design Patterns in SEMANTIC WEB, vol 7, issue 1, pp2016In: Semantic Web, ISSN 1570-0844, E-ISSN 2210-4968, Vol. 7, no 1Article in journal (Other academic)
    Abstract [en]

    n/a

  • 110.
    Blomqvist, Eva
    et al.
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, The Institute of Technology.
    Rinne, Mikko
    Aalto University, Finland.
    The Event Processing ODP2013In: Proceedings of the 4th Workshop on Ontology and Semantic Web Patterns co-located with 12th International Semantic Web Conference (ISWC 2013), CEUR-WS , 2013, Vol. 1188Conference paper (Refereed)
    Abstract [en]

    In this abstract we present a model for representing heterogeneous event objects in RDF, building on pre-existing work and focusing on structural aspects, which have not been addressed before, such as composite event objects encapsulating other event objects. The model extends the SSN and Event-F ontologies, and is available for download in the ODP portal.

  • 111.
    Blomqvist, Eva
    et al.
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, The Institute of Technology.
    Seil Sepour, Azam
    Jönköping University, Department of Computer and Electrical Engineering.
    Presutti, Valentina
    ISTC-CNR.
    Ontology Testing - Methodology and Tool2012Conference paper (Other academic)
    Abstract [en]

    Ontology engineering is lacking methods for verifying that ontological requirements are actually fulfilled by an ontology. There is a need for practical and detailed methodologies and tools for carrying out testing procedures and storing data about a test case and its execution. In this paper we first describe a methodology for conducting ontology testing, as well as three examples of this methodology for testing specic types of requirements. Next, we describe a tool that practically supports the methodology.We conclude that there is a need to support users in this crucial part of ontology engineering, and that our proposed methodology is a step in this direction.

  • 112.
    Blomqvist, Eva
    et al.
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, Faculty of Arts and Sciences.
    Thollander, Patrik
    Linköping University, Department of Management and Engineering, Energy Systems. Linköping University, Faculty of Science & Engineering.
    An integrated dataset of energy efficiency measures published as linked open data2015In: Energy Efficiency, ISSN 1570-646X, E-ISSN 1570-6478, Vol. 8, no 6, p. 1125-1147Article in journal (Refereed)
    Abstract [en]

    Despite an extensive energy efficiency potential, measures are sometimes not adopted due to barriers, such as lack of information. An integrated database of available energy efficiency measures, which has not existed previously, is one step towards overcoming such barriers. To address this, we present a dataset (i.e., data-base) integrating energy efficiency data from Sweden (from the Swedish Energy Agency) and the USA (from the Department of Energys Industrial Assessment Centers), and publishing the data on the Web, using standardized Web languages and following the principles and best practices of so-called linked data. Additionally, several demonstration interfaces to access the data are provided, in order to show the potential of the result. These are entirely novel results, since this is the first dataset we are aware of that publishes this type of data using linked data principles and standards, thus integrating data from entirely different sources making them jointly searchable and reusable. Our results show that such data integration is possible, and that the integrated dataset has several benefits for different categories of users, e.g., supporting industry and energy efficiency auditors in overcoming the information barrier for investment in energy efficiency measures, and supporting application developers to more easily integrate such data into support tools for energy efficiency assessment.

  • 113.
    Blomqvist, Eva
    et al.
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, The Institute of Technology.
    Zhang, Ziqi
    University of Sheffield, UK.
    Gentile, Anna Lisa
    University of Sheffield, UK.
    Augenstein, Isabelle
    University of Sheffield, UK.
    Ciravegna, Fabio
    University of Sheffield, UK.
    Statistical Knowledge Patterns for Characterising Linked Data2013In: Proceedings of the 4th Workshop on Ontology and Semantic Web Patterns (WOP 2013)  co-located with 12th International Semantic Web Conference (ISWC 2013), CEUR-WS , 2013, Vol. 1188Conference paper (Refereed)
    Abstract [en]

    Knowledge Patterns (KPs), and even more specifically Ontology Design Patterns (ODPs), are no longer only generated in a top-down fashion, rather patterns are being extracted in a bottom-up fashion from online ontologies and data sources, such as Linked Data. These KPs can assist in tasks such as making sense of datasets and formulating queries over data, including performing query expansion to manage the diversity of properties used in datasets. This paper presents an extraction method for generating what we call Statistical Knowledge Patterns (SKPs) from Linked Data. SKPs describe and characterise classes from any reference ontology, by presenting their most frequent properties and property characteristics, all based on analysis of the underlying data. SKPs are stored as small OWL ontologies but can be continuously updated in a completely automated fashion. In the paper we exemplify this method by applying it to the classes of the DBpedia ontology, and in particular we evaluate our method for extracting range axioms from data. Results show that by setting appropriate thresholds, SKPs can be generated that cover (i.e. allow us to query, using the properties of the SKP) over 94% of the triples about individuals of that class, while only needing to care about 27% of the total number of distinct properties that are used in the data.

  • 114.
    Boddu, Srinivas Reddy
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, The Institute of Technology.
    What is the relationship between task-based and open-ended usability testing, in terms of measuring satisfaction?2014Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Usability is one of the most important aspects of Information Technology. Usability plays a vital role in this industry, where organizations thrive to ensure utmost satisfaction of their end-users in regard to the experience of using their product. The systems may be a website or a software application. To measure user satisfaction, the method of usability testing can be performed. Performing usability testing gives a clear picture of difficulties that would be faced by potential target users. There are different types of usability testing such as Task-based usability testing, open ended usability testing, remote usability testing etc. The important point here is about deciding upon the most appropriate type of testing technique to get the accurate user satisfaction level.

    This study is mainly focused to answer the following research question: What is the relationship between the task-based and open ended usability testing, in terms of measuring satisfaction? System Usability Scale (SUS) has been used to measure the satisfaction of the users in this study. For this we used two websites performing task-based usability testing and open ended usability testing respectively.

    This study had involved twenty eight different participants. Participants are divided into two groups, one group to perform open ended usability testing and another for task-based usability testing for both the websites. This study has produced following results; Open-ended testing tended to produce higher SUS-ratings for the tested system. The results in this study showed that users performing open-ended usability testing gave positive responses for both the websites in terms of user satisfaction. Open-ended usability testing is an exploratory testing, where the testing is based on different aspects such as user interface of the system, design etc. Task-based usability testing is goal based where users have to complete the given task without fail. This method drew lower scores when compared to open-ended usability testing for the tested systems from the attained results. Nevertheless that task-based testing attained lower SUS scores, it is fairly straight forward than open-ended testing to measure efficiency and effectiveness. The above results have been discussed in detail. This study has finally concluded that to measure the usability of a system it is recommended to practice both the open-ended and task-based usability testing techniques.

  • 115.
    Boodé, Henrik
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, The Institute of Technology.
    Prototyping of a mobile, Augmented Reality assisted maintenance tool2014Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    The purpose of this thesis work is to create a prototype for an augmented reality application that isaimed to support service technician when performing service and maintenance of machines andengines. The prototype will be used for investigating what technical limitations there is and toestablish basic usability for the user interface. The method that is used is user studies and analysis toevaluate use cases and user stories. An iterative work process is then applied for design and theprototype is continuously user tested.The resulting prototype uses a Samsung Galaxy Tab 2 running on Android operating system. Theframework used for augmented reality is NyARToolkit which handles marker recognition andconnections to Android. NyARToolkit uses OpenGL to visualize 3D models. The 3D models used isin the metasequoia fileformat. The application that implements the framework gets reasonableperformance on Galaxy Tab 2 and the visualization of 3D model is accomplished. A stabile markerrecognition is not attained.The usability has not been studied thoroughly, but it is designed based on the unofficial standard fordesign on mobile devices and for 3D manipulation on mobile devices. The graphical design is aimingfor an open workspace with as few interrupting objects as possible. Clear descriptions of objects are apart that has resulted from usertesting.Judging by the functionality that the prototype indicates it could be assumed that an application of thistype is possible in the given field, which is worked performed by a service technician. The testingequipment that has been used is not of the latest generation of mobile devices which can mean thatnewer models perform better than the ones used for testing. What seems to be limiting the use of themarker recognition is the quality of the video input. The device’s processing power affects howadvanced the 3D environment can be, which in turn can reduce performance when more complex 3Dmodels are used. Since there are several frameworks for the Android platform there is also severalsolutions to making a prototype with the sane functionality. Since I have only explored oneframework there is a possibility that another framework could have produced a more stabile prototypeThe user testing that has been performed points out that a distinct design is needed. Clearly describingtexts for different objects should be used to make the user less confused. An unofficial user designthat is generally used has to be implemented so that the users fell at home when handling theapplication on mobile devices.

  • 116.
    Borgstedt, Jan
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, Faculty of Science & Engineering.
    Utveckling av ett kommunikationsprotokoll för datainsamling från medicinteknisk utrustning2015Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Patient data management systems (PDMS) have to handle various data sources such as patient monitors, ventilators and pumps. The objective of this work was to develop a general and maintainable medical protocol and a database system to manage patient data from various medical instruments in intensive care.

    A prototype system with an experimental communication protocol and a database was created and evaluated technically with a Philips MP30 patient monitor system. The system was developed in the programming language C# with a MySQL database. The study shows that it is possible to create a protocol that handles various medical data sources. The report describes the developed protocol, data structures, architecture and related communication standards used in healthcare.

  • 117.
    Borland, Marcus
    Linköping University, Department of Computer and Information Science, Human-Centered systems.
    Implementation och användbarhet av en spelbutik i en applikation2016Independent thesis Basic level (university diploma), 10,5 credits / 16 HE creditsStudent thesis
    Abstract [sv]

    Det här examensarbetet grundar sig i området datateknik och är utfört på Linköpings Universitet. Examensarbetet kretsar kring det matematiska pusselspelet Entanglement som är baserat på Christer Fuglesangs barnböcker om rymden. Spelet är fortfarande i utvecklingsstadiet. Tanken är att Entanglement skall vara en gratis applikation.  Därmed var behovet av att implementera någon typ av funktion som leder till avkastning. Under examensarbetets gång har en fallstudie och en kravframtagning utförts där andra redan befintliga avkastningsfunktioner har granskas i applikationer samt krav har tagits fram. Detta gav upphov till den virtuella butik som Entanglement nu använder sig av. Spelet är baserat på böckernas design och därav kommer även butiken använda sig utav material taget från böckerna. Då spelet är skrivit med hjälp av ramverket Phaser kommer även skapandet av butiken ske med hjälp av Phaser. Resultatet från examensarbetet kommer att vara en fungerande virtuell butik med design från Christer Fuglesangs böcker. Även så kommer användartester att utföras för att ligga till grund i bedömningen om butiken presterar utefter kundens önskemål och krav och för att se om spelet uppnår användbarhet. 

  • 118.
    Bossuyt, Thor
    et al.
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, The Institute of Technology.
    Hillgren, Niklas
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, The Institute of Technology.
    Combining touch & mid-air gestures on public displays2012Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    This thesis investigates the impact of different factors on public displays that use touch and mid-air gestures. We present a novel application for public displays: MirrorTouch — a game combining touch interaction with mid-air gesturing through depth sense. We studied the impact of these factors through a series field studies. We show that clear affordances are important to communicate both modalities clearly and also how to improve the conversion rate of passers-by. We present our findings of how social situations around such a display varied with the location where the display was placed. We also present quantitative data on group behavior around our public display, such as a measuring of the honeypot effect and how people made transitions between the different modalities. Our results can be of great value to designers and researchers of public displays that want to deploy displays with similar techniques. 

  • 119.
    Bras, Corentin
    Linköping University, Department of Computer and Information Science, Human-Centered systems.
    Performance and architecture optimization in an HTML5-based web game2016Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Web applications are becoming more and more complex and bigger and bigger. In the case of a web game, it can be as big as a software. As well, as these applications are run indirectly through a web browser they need to be quite well optimized. For these reasons, performance and architecture are becoming a crucial point in web development. This report covers some method to improve the architecture of a javascript application by using design patterns. It will also present some methods to optimize the performance of javascript code and some way to do some of these changes automatically. Applying these changes allows us to increase the framerate of the web game by 50% and to reduce the loading time of the game by more than 72%. The usage of design patterns such as the observer, the composite and the builder pattern permits to improve the maintainability, extendibility and flexibility of the code but also allows to implement new features.

  • 120.
    Brolund, Filip
    Linköping University, Department of Computer and Information Science, Human-Centered systems.
    Implementation av begreppskartor med zoom och panorering för webb och surfplattor med hjälp av Meteor2017Independent thesis Basic level (university diploma), 10,5 credits / 16 HE creditsStudent thesis
    Abstract [sv]

    Forskargruppen Educational Technology Group med forskare från Linköpings och Lunds universitet jobbar på ett lärospel i historia för mellanstadiet. En av aktiviteterna i spelet är att skapa begreppskartor och denna aktivitet är i behov av en uppgradering för att kunna utmana eleverna på en svårare nivå. En högre nivå ska nås genom att eleverna får jobba med fler än en begreppskarta åt gången och varje begreppskarta ska få zoom- och panorerings-funktionalitet. Den här rapporten går igenom några olika sätt för att implementera zoom och panorering och avslutas med att implementera och utvärdera en lösning i flera iterationer.

     

    D3 visar sig vara ett JavaScriptbibliotek som har allt för att implementera begreppskartor med zoom och panorering, dessutom krävs inga Meteor-specifika funktionaliteter. Resultatet av denna studie går även att använda sig av för att implementera zoom och panorering till andra delar av sin applikation än begreppskartor.

     

    Vid testning med D3 visade webbläsarna Chrome, Firefox och Edge olika resulat vid touch-interaktioner. Chrome gav fullt stöd för alla touch-interaktionen. Firefox krävde dubbeltryck eller att man höll ner fingret en stund för att aktivera dragning av begrepp eller panorering. Vid vertikala dragningar för panorering kunde zoom aktiveras istället för panorering. I webbläsaren Edge fungerade inga touch-interaktioner.

     

    Scroll mellan begreppskartor och zoom och panorering i begreppskartorna blev en för avancerad interaktion för den tänkta användargruppen, elever på mellanstadiet. Att kunna visa en helhetsbild av alla begreppskartor tillsammans ansågs viktigare än att ha zoom och panorering. En bra kompromiss mellan helhetsbild och interaktions-yta blev att visa alla utom en begreppskarta som miniatyrer. Detta kunde implementeras med hjälp av javascriptbiblioteket interact.js och div-element. 

  • 121.
    Bylin, Henrik
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, The Institute of Technology.
    Migration process evaluation and design2013Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Many organizations find themselves at one time in a situation where oneof their IT systems has to be replaced with another system. The new system has to get access to the legacy data in order to function. This thesis examines a migration case where the company Medius has made a new version of their product Mediusflow that has a completely new data model. The problem is then how to migrate data from the old to thenew version. The thesis first examines different data migration processes to find one suitable for the specific case. Then a prototype migration solution is developed using the chosen process to show that the migration can be done. In the end conclusions are drawn from the experiences gained during the thesis to what key factors are important for successful data migrations.

  • 122.
    Bäck, Jesper
    Linköping University, Department of Computer and Information Science, Human-Centered systems.
    Domain similarity metrics for predicting transfer learning performance2019Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    The lack of training data is a common problem in machine learning. One solution to thisproblem is to use transfer learning to remove or reduce the requirement of training data.Selecting datasets for transfer learning can be difficult however. As a possible solution, thisstudy proposes the domain similarity metrics document vector distance (DVD) and termfrequency-inverse document frequency (TF-IDF) distance. DVD and TF-IDF could aid inselecting datasets for good transfer learning when there is no data from the target domain.The simple metric, shared vocabulary, is used as a baseline to check whether DVD or TF-IDF can indicate a better choice for a fine-tuning dataset. SQuAD is a popular questionanswering dataset which has been proven useful for pre-training models for transfer learn-ing. The results were therefore measured by pre-training a model on the SQuAD datasetand fine-tuning on a selection of different datasets. The proposed metrics were used tomeasure the similarity between the datasets to see whether there was a correlation betweentransfer learning effect and similarity. The results found a clear relation between a smalldistance according to the DVD metric and good transfer learning. This could prove usefulfor a target domain without training data, a model could be trained on a big dataset andfine-tuned on a small dataset that is very similar to the target domain. It was also foundthat even small amount of training data from the target domain can be used to fine-tune amodel pre-trained on another domain of data, achieving better performance compared toonly training on data from the target domain.

  • 123.
    Bäcklund, Jakob
    Linköping University, Department of Computer and Information Science, Human-Centered systems.
    Gameful learning through The Lens of Intrinsic Skill Atoms2016Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Creating applications and systems that effectively motivate users is very important both in business and education. Using design practises from game development in non- game settings to exploit its ability to engage players has become increasingly more popular in recent time to attract and encourage users. This study examines how to effectively and systematically develop an application using a method based in both game design and inter- action design to develop a learning application for programming. The results demonstrates the strengths of the applied iterative prototyping and powerful design tools of the specific method in a smaller scale project as well as the weaknesses of the vague description of tool usage with risk of derailing in the design steps. 

  • 124.
    Bång, Magnus
    et al.
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, The Institute of Technology.
    Prytz, Erik
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, The Institute of Technology.
    Rybing, Jonas
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, The Institute of Technology.
    Timpka, Toomas
    Linköping University, Department of Medical and Health Sciences, Division of Community Medicine. Linköping University, Faculty of Health Sciences. Östergötlands Läns Landsting, Center for Health and Developmental Care, Center for Public Health.
    Cognitive design of a digital desk for the emergency room setting2014In: 2014 AMIA Annual Symposium / [ed] Westra, Bonnie L, Oxford University Press, 2014Conference paper (Refereed)
  • 125.
    Cai, Haibin
    et al.
    Univ Portsmouth, England.
    Fang, Yinfeng
    Univ Portsmouth, England.
    Jue, Zhaojie
    Univ Portsmouth, England.
    Costescu, Cristina
    Babes Bolyai Univ, Romania.
    David, Daniel
    Babes Bolyai Univ, Romania.
    Billing, Erik
    Univ Skovde, Sweden.
    Ziemke, Tom
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, Faculty of Science & Engineering. Univ Skovde, Sweden.
    Thill, Serge
    Univ Plymouth, England.
    Belpaeme, Tony
    Univ Plymouth, England.
    Vanderborght, Bram
    Vrije Univ Brussel, Belgium; Flanders Make, Belgium.
    Vernon, David
    Carnegie Mellon Univ Africa, Rwanda.
    Richardson, Kathleen
    De Montfort Univ, England.
    Liu, Honghai
    Univ Portsmouth, England.
    Sensing-Enhanced Therapy System for Assessing Children With Autism Spectrum Disorders: A Feasibility Study2019In: IEEE Sensors Journal, ISSN 1530-437X, E-ISSN 1558-1748, Vol. 19, no 4, p. 1508-1518Article in journal (Refereed)
    Abstract [en]

    It is evident that recently reported robot-assisted therapy systems for assessment of children with autism spectrum disorder (ASD) lack autonomous interaction abilities and require significant human resources. This paper proposes a sensing system that automatically extracts and fuses sensory features, such as body motion features, facial expressions, and gaze features, further assessing the children behaviors by mapping them to therapist-specified behavioral classes. Experimental results show that the developed system has a capability of interpreting characteristic data of children with ASD, thus has the potential to increase the autonomy of robots under the supervision of a therapist and enhance the quality of the digital description of children with ASD. The research outcomes pave the way to a feasible machine-assisted system for their behavior assessment.

  • 126.
    Cao, Hoang-Long
    et al.
    Vrije Univ Brussel, Belgium.
    Esteban, Pablo G.
    Vrije Univ Brussel, Belgium.
    Bartlett, Madeleine
    Plymouth Univ, England.
    Baxter, Paul
    Univ Lincoln, England.
    Belpaeme, Tony
    Plymouth Univ, England; Univ Ghent, Belgium.
    Billing, Erik
    Univ Skovde, Sweden.
    Cai, Haibin
    Loughborough Univ, England.
    Coeckelbergh, Mark
    De Montfort Univ, England.
    Costescu, Cristina
    Babes Bolyai Univ, Romania.
    David, Daniel
    Babes Bolyai Univ, Romania.
    De Beir, Albert
    Vrije Univ Brussel, Belgium.
    Hernandez, Daniel
    Plymouth Univ, England.
    Kennedy, James
    Plymouth Univ, England.
    Liu, Honghai
    Univ Portsmouth, England.
    Matu, Silviu
    Babes Bolyai Univ, Romania.
    Mazel, Alexandre
    Softbank Robot Europe, France.
    Pandey, Amit
    Softbank Robot Europe, France.
    Richardson, Kathleen
    De Montfort Univ, England.
    Senft, Emmanuel
    Plymouth Univ, England.
    Thill, Serge
    Plymouth Univ, England.
    Van de Perre, Greet
    Vrije Univ Brussel, Belgium.
    Vanderborght, Bram
    Vrije Univ Brussel, Belgium.
    Vernon, David
    Univ Skovde, Sweden; Carnegie Mellon Univ Africa, Rwanda.
    Wakunuma, Kutoma
    De Montfort Univ, England.
    Yu, Hui
    Univ Portsmouth, England.
    Zhou, Xiaolong
    Zhejiang Univ Technol, Peoples R China.
    Ziemke, Tom
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, Faculty of Science & Engineering. Univ Skovde, Sweden.
    Robot-Enhanced Therapy Developing and Validating a Supervised Autonomous Robotic System for Autism Spectrum Disorders Therapy2019In: IEEE robotics & automation magazine, ISSN 1070-9932, E-ISSN 1558-223X, Vol. 26, no 2, p. 49-58Article in journal (Refereed)
    Abstract [en]

    n/a

  • 127.
    Capshaw, Riley
    Linköping University, Department of Computer and Information Science, Human-Centered systems.
    Relation Classification using Semantically-Enhanced Syntactic Dependency Paths: Combining Semantic and Syntactic Dependencies for Relation Classification using Long Short-Term Memory Networks2018Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Many approaches to solving tasks in the field of Natural Language Processing (NLP) use syntactic dependency trees (SDTs) as a feature to represent the latent nonlinear structure within sentences. Recently, work in parsing sentences to graph-based structures which encode semantic relationships between words—called semantic dependency graphs (SDGs)—has gained interest. This thesis seeks to explore the use of SDGs in place of and alongside SDTs within a relation classification system based on long short-term memory (LSTM) neural networks. Two methods for handling the information in these graphs are presented and compared between two SDG formalisms. Three new relation extraction system architectures have been created based on these methods and are compared to a recent state-of-the-art LSTM-based system, showing comparable results when semantic dependencies are used to enhance syntactic dependencies, but with significantly fewer training parameters.

  • 128.
    Cheng, Sijin
    Linköping University, Department of Computer and Information Science, Human-Centered systems.
    Relevance feedback-based optimization of search queries for Patents2019Independent thesis Advanced level (degree of Master (Two Years)), 40 credits / 60 HE creditsStudent thesis
    Abstract [en]

    In this project, we design a search query optimization system based on the user’s relevance feedback by generating customized query strings for existing patent alerts. Firstly, the Rocchio algorithm is used to generate a search string by analyzing the characteristics of related patents and unrelated patents. Then the collaborative filtering recommendation algorithm is used to rank the query results, which considering the previous relevance feedback and patent features, instead of only considering the similarity between query and patents as the traditional method.

    In order to further explore the performance of the optimization system, we design and conduct a series of evaluation experiments regarding TF-IDF as a baseline method. Experiments show that, with the use of generated search strings, the proportion of unrelated patents in search results is significantly reduced over time. In 4 months, the precision of the retrieved results is optimized from 53.5% to 72%. What’s more, the rank performance of the method we proposed is better than the baseline method. In terms of precision, top10 of recommendation algorithm is about 5 percentage points higher than the baseline method, and top20 is about 7.5% higher. It can be concluded that the approach we proposed can effectively optimize patent search results by learning relevance feedback.

  • 129.
    Christoffer, Hardmo
    et al.
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, The Institute of Technology.
    Erik, Dellby
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, The Institute of Technology.
    Utveckling av en webbapplikation med fokus på användbarhet2013Independent thesis Basic level (university diploma), 10,5 credits / 16 HE creditsStudent thesis
    Abstract [sv]

    Denna rapport beskriver det examensarbete som genomförts av Christoffer Hardmo och Erik Dellby. Examensarbetets syfte var att utveckla en nerskalad användbar version av KompetensUtvecklingsInstitutets nuvarande elevhanteringsprogram.

    Rapporten kommer beskriva hur vi lagt upp jobbet för att få en användbar applikation för KUI att använda.

    Vår slutsats är att arbeta mot användbarhet är en väldigt viktig punkt när det gäller utveckling av produkter i alla miljöer. Arbetet har gett oss en bra erfarenhet hur man jobbar ihop med kunden för att få en bra produkt.

  • 130.
    Claesson, Erik
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, The Institute of Technology.
    Generella Gränssnitt2012Independent thesis Basic level (degree of Bachelor), 12 credits / 18 HE creditsStudent thesis
    Abstract [sv]

    Idag  används  datorer,  surfplattor  och  mobiler  i  allt  större  utsträckning.  Ett  sätt  att försöka  minska utvecklingskostnader  för  mjukvaruföretag  är  att  bygga  ett  generellt gränssnitt  som  fungerar  på  alla dessa  plattformar.  Det  finns  stora  skillnader  mellan de  olika  plattformarna,  till  exempel  skärmstorlek, vilken inmatningsmetod som används och i vilka sammanhang plattformarna används. Denna studie har undersökt  om  det  är möjligt  att  bygga  ett  generellt  gränssnitt  för  ett  affärssystem.  Ett  par  viktiga faktorer som  bör  iakttas  vid  ett  generellt  system  lyfts  fram,  exempelvis  knappstorlek, feedback  och komplexitet.  En  del  av  resultatet  exemplifierar  hur  en  tabell  kan  visas på  mobiler,  surfplattor  och datorer. Slutsatsen visar att vinsten med att bygga ett generellt gränssnitt inte är tillräckligt stor i detta fall.

  • 131.
    Classon, Johan
    et al.
    Linköping University, Department of Computer and Information Science, Human-Centered systems.
    Andersson, Viktor
    Linköping University, Department of Computer and Information Science, Human-Centered systems.
    Procedural Generation of Levels with Controllable Difficulty for a Platform Game Using a Genetic Algorithm2016Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    This thesis describes the implementation and evaluation of a genetic algorithm (GA) for procedurally generating levels with controllable difficulty for a motion-based 2D platform game. Manually creating content can be time-consuming, and it may be desirable to automate this process with an algorithm, using Procedural Content Generation (PCG). An algorithm was implemented and then refined with an iterative method by conducting user tests. The resulting algorithm is considered a success and shows that using GA's for this kind of PCG is viable. An algorithm able to control difficulty of its output was achieved, but more refinement could be made with further user tests. Using a GA for this purpose, one should find elements that affect difficulty, incorporate these in the fitness function, and test generated content to ensure that the fitness function correctly evaluates solutions with regard to the desired output.

  • 132. Cudré-Mauroux, Philippe
    et al.
    Heflin, JeffSirin, EvrenTudorache, TaniaEuzenat, JérômeHauswirth, ManfredParreira, Josiane XavierHendler, JimSchreiber, GuusBernstein, AbrahamBlomqvist, EvaLinköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, The Institute of Technology.
    The Semantic Web - ISWC 2012 - 11th International Semantic Web Conference, Boston, MA, USA, November 11-15, 2012, Proceedings, Part I2012Conference proceedings (editor) (Other academic)
  • 133. Cudré-Mauroux, Philippe
    et al.
    Heflin, JeffSirin, EvrenTudorache, TaniaEuzenat, JérômeHauswirth, ManfredParreira, Josiane XavierHendler, JimSchreiber, GuusBernstein, AbrahamBlomqvist, EvaLinköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, The Institute of Technology.
    The Semantic Web - ISWC 2012 - 11th International Semantic Web Conference, Boston, MA, USA, November 11-15, 2012, Proceedings, Part II2012Conference proceedings (editor) (Other academic)
  • 134.
    Dahlberg, Johannes
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, The Institute of Technology.
    En Android-applikation: för övervakning av varningar och fel2012Independent thesis Basic level (degree of Bachelor), 10,5 credits / 16 HE creditsStudent thesis
    Abstract [sv]

    Lawson Software, ett dotterbolag till Infor, är ett företag med mer än 4000 anställda i 40 länder. De levererar affärsystemlösningar och tjänster till företag inom hälsovård, tillverkning, distribution, underhåll och service.

    Grundsystemet i Lawsons affärssystem består av en mängd mindre applikationer som körs mot ett egenutvecklat system. Vad jag ska göra är att undersöka möjligheten att övervaka dessa applikationer genom en smartphone och bygga en prototyp för övervakningen i Java, för Android.

    Applikationen mottogs positivt av Lawson och det finns redan planer på vidare utveckling av den efter exjobbets avslut.

  • 135.
    Dahlbäck, Nils
    et al.
    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.
    Granlund, Rego
    Santa Anna IT Research Institute, Linköping, Sweden.
    Granlund, Helena
    Santa Anna IT Research Institute, Linköping, Sweden.
    The Impact of GPS Support on Performance of Municipal Crisis Management Teams2011In: ICCRTS 2011, 2011Conference paper (Other academic)
  • 136.
    Dahlbäck, Nils
    et al.
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, Faculty of Arts and Sciences.
    Kristiansson (Forsblad), Mattias
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, Faculty of Arts and Sciences.
    A perspective on all cognition? A study of everyday environments from the perspective of distributed cognition2016In: Proceedings of the 38th Annual Conference of the Cognitive Science Society / [ed] Papafragou, A., Grodner, D., Mirman, D., & Trueswell, J.C. (Eds.), Cognitive Science Society, Inc., 2016, p. 734-739Conference paper (Refereed)
    Abstract [en]

    Distributed cognition is a perspective that primarily has been applied to complex socio-technical systems such as flight decks of commercial airliners, or operating rooms where professionals perform cognitive tasks in environments specifically designed for this. For some scholars distributed cognition is exactly this kind of specialized cognitive system. On the other hand it has been claimed by some workers in the field that distributed cognition is not a kind of cognition but a perspective on all cognition. We have therefore studied an environment very different from the systems previously studied, namely single people’s homes. We find that there are many similarities between the home and the specialized socio-technical environments. To us this suggests that the specially designed complex environments can be seen as specialized cases of the general principles of distributed cognition which are not reflections of “particular work practices” but of general features of human cognition.

  • 137.
    Dahlbäck, Nils
    et al.
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, Faculty of Arts and Sciences.
    Kristiansson (Forsblad), Mattias
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, Faculty of Arts and Sciences.
    Stjernberg, Fredrik
    Linköping University, Department of Culture and Communication, Arts and Humanities. Linköping University, Faculty of Arts and Sciences.
    Distributed Remembering Through Active Structuring of Activities and Environments2013In: Review of Philosophy and Psychology, ISSN 1878-5158, E-ISSN 1878-5166, Vol. 4, no 1, p. 153-165Article in journal (Refereed)
    Abstract [en]

    In this paper, we consider a few actual cases of mnemonic strategies among older subjects (older than 65). The cases are taken from an ethnographic study, examining how elderly adults cope with cognitive decline. We believe that these cases illustrate that the process of remembering in many cases involve a complex distributed web of processes involving both internal or intracranial and external sources. Our cases illustrate that the nature of distributed remembering is shaped by and subordinated to the dynamic characteristics of the on-going activity and to our minds suggest that research on memory and distributed cognition should focus on the process of remembering through detailed descriptions and analysis of naturally occurring situations.

  • 138.
    Dahlbäck, Nils
    et al.
    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.
    Kristiansson (Forsblad), Mattias
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, Faculty of Arts and Sciences.
    Stjernberg, Fredrik
    Linköping University, Department of Culture and Communication, Arts and Humanities. Linköping University, Faculty of Arts and Sciences.
    In search of the real Otto and Inga: Extended mind in the wild2011Conference paper (Other academic)
  • 139.
    Dahlbäck, Nils
    et al.
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, Faculty of Arts and Sciences.
    Skagerlund, Kenny
    Linköping University, Department of Behavioural Sciences and Learning, Psychology. Linköping University, Faculty of Arts and Sciences.
    Culture, Cognitive Systems and Extended Mind – Embedding the Extended Mind within Activity Theory2011Conference paper (Other academic)
  • 140.
    Dahlbäck, Nils
    et al.
    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.
    Stjernberg, Fredrik
    Linköping University, Department of Culture and Communication, Arts and Humanities. Linköping University, Faculty of Arts and Sciences.
    Kristiansson (Forsblad), Mattias
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, Faculty of Arts and Sciences.
    Skagerlund, Kenny
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, Faculty of Arts and Sciences.
    Two ways of grounding the discussion on extended cognition2011In: Expanding the Space of Cognitive Science: Proceedings of the 33rd Annual Meeting of theCognitive Science Society / [ed] Laura Carlson, Christoph Hoelscher, Thomas F. Shipley, Cognitive Science Society, Inc., 2011, p. 2347-2352Conference paper (Refereed)
    Abstract [en]

    We question two of the basic foundations of the Extended Mind hypothesis originally formulated by Clark and Chalmers, i.e. that all cognition is organism centered and that the important theoretical issues that the debate surrounding the Extended Mind hypothesis can fruitfully be resolved by to a large extent rely on invented examples of cognitive activities as the empirical foundation. We suggest that one way to proceed is to frame the hypothesis within the larger theoretical framework of activity theory, and another is to conduct extensive field studies of extended cognitive processes. We illustrate our position with examples of how these can be used to reformulate some of the aspects of the Extended Mind hypothesis.

  • 141.
    Dahlgren, Susanna
    Linköping University, Department of Computer and Information Science, Human-Centered systems.
    Design and Evaluation of a Visualization Method in a GIS for Complex Electronic Warfare Assessment with Regards to Usability2019Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    This study presents a way to design a visualization method in a geographic information system for complex electronic warfare assessment. Enhanced usability was in focus and the work covers important factors and challenges when evaluating usability during the development process in a complex domain.

     

    Electronic warfare is an important part of each country’s defence. Assessing Electronic Warfare capabilities in real war zones is normally impossible, making simulations and visualizations important parts of the process. The field of visualization covers visual techniques for presenting large data sets in ways that provide insight to the user. In a visualization, an enhanced usability is achieved with a user-centered interface. Developing a visualization towards usability has its challenges, to develop it in a complex domain with few domain experts as users is even more challenging.

     

    The study used an iterative method with three iterations of implementation and evaluation, applying an approach adapted for experts working in a complex domain. When designing a visualization for a complex domain, the most important factors during the design process are to understand how the users work in the system and to make the visualization simple and over-intuitive.

     

    The last user testing indicated that the users were able to draw conclusions about high-level conceptual goals based on the visual representation as well as to use the GUI to interact with the system. The result of this study is a visualization method for radar propagation with local refractive index, together with a process that can be used to design and evaluate a visualization method towards usability in a complex domain.

  • 142.
    Danielsson, William
    Linköping University, Department of Computer and Information Science, Human-Centered systems.
    React Native application development: A comparison between native Android and React Native2016Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Creating a mobile application often requires the developers to create one for Android och one for iOS, the two leading operating systems for mobile devices. The two applications may have the same layout and logic but several components of the user interface (UI) will differ and the applications themselves need to be developed in two different languages. This process is gruesome since it is time consuming to create two applications and it requires two different sets of knowledge. There have been attempts to create techniques, services or frameworks in order to solve this problem but these hybrids have not been able to provide a native feeling of the resulting applications.

    This thesis has evaluated the newly released framework React Native that can create both iOS and Android applications by compiling the code written in React. The resulting applications can share code and consists of the UI components which are unique for each platform. The thesis focused on Android and tried to replicate an existing Android application in order to measure user experience and performance. The result was surprisingly positive for React Native as some user could not tell the two applications apart and nearly all users did not mind using a React Native application. The performance evaluation measured GPU frequency, CPU load, memory usage and power consumption. Nearly all measurements displayed a performance advantage for the Android application but the differences were not protruding.

    The overall experience is that React Native a very interesting framework that can simplify the development process for mobile applications to a high degree. As long as the application itself is not too complex, the development is uncomplicated and one is able to create an application in very short time and be compiled to both Android and iOS.

  • 143.
    Dimanche, Frédéric
    et al.
    SKEMA Business School.
    Keup, Mady
    SKEMA Business School.
    Prayag, Girish
    SKEMA Business School.
    Segelström, Fabian
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, The Institute of Technology.
    Holmlid, Stefan
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, The Institute of Technology.
    What is service design2012In: Service Design and Tourism: Case studies of applied research projects on mobile ethnography for tourism destinations / [ed] Marc Stickdorn, Birgit Frischhut, Norderstedt: Books on Demand , 2012, p. 10-21Chapter in book (Other academic)
    Abstract [en]

    Tourism becomes more and more transparent through social media and tourism review websites. Nowadays, it’s the individual guest’s experience that makes or breaks the success of a tourism product. Thus, the focus in tourism shifts from mere marketing communications to meaningful experiences. Service design thinking can provide an in-depth and holistic understanding of customers required to co-create meaningful experiences with guests.The book provides an introduction into service design and tourism and presents seven case studies of European tourism destinations, which used the app myServiceFellow as a mobile ethnography research tool to gain genuine customer insights. The book reports lessons learned of these case studies, gives managerial implications and an outlook on future research fields for service design in tourism.

  • 144.
    Djerf, Frithiof
    et al.
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, Faculty of Science & Engineering.
    Andersson, Filip
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, Faculty of Science & Engineering.
    Att hantera sömmar i interaktiva system2015Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    The purpose of this paper is to examine how seams in an interactive system should be managed. Seamsin this study refer to the boundaries that arise when users move between for example differentsoftware, products or positioning systems. These seams are a cornerstone of the relatively unexploredarea called seamful design, which is based on that users can avail highlighted seams through activeparticipation in the use of a system. To analyze this area, seamful design is applied to the developmentof an interface of a smoothie vending machine. This smoothie machine thus provides the analyzedinteractive system, which the research questions are applied to as well as answered by. The researchquestions are infused by seams and seamful design. More specifically, this paper questions how, whenand why these seams should be made visible or hidden. Another question stresses if the visualizationof seams can be applied to a smoothie machine and create distinct advantages in this system.

    To accomplish this, the project was divided in three separate phases. The first phase consisted ofexamining the conditions, environment and design of the service and the product. The second phaseconsisted of an iterative creation of concept proposals and usage of related methods. The third andfinal phase involved performing user tests, evaluating the interface and drawing conclusions about theformulated research questions.

    The project results are visualized partly by the final interface that was generated, and partly by theresults of the performed user tests during the third phase, which later came to form the basis for theconclusions that arose. The results included the understanding that the visualization of seams have thepotential to increase the task success rate, but at the same time may entail the risk of extending thetime it takes to perform a task. This was distinguished from the result of the test where the user wasgiven the task to place a cup in the machine. In one case, the seam was highlighted, while it was hiddenin the other. An additional result was that users expressed that seams could entail an advantage whenthe system was used repeatedly, while they in situations where they only used the system once, arguedthat it was beneficial to hide the seam because of lack of interest of the additional information.

    The conclusions based on this result, included both guidelines of how, when and why it is appropriateto highlight or hide seams, and also the finding that that seamful design has potential to be applied toa smoothie machine with clear benefits. The first of these guidelines implies that seams should behidden in systems which focus on performance and efficiency, as there is a risk that the usage time isprolonged when the seam is highlighted. Another guideline states that seams should be hidden whenmanipulation of the system could entail a serious risk, due to that users in most cases create a deeperunderstanding of the underlying technology when the seams are highlighted. On the contrary, insystems where possible manipulation entails no significant risk, seams may be highlighted to facilitatean individual use of the system. Furthermore, it is advantageous to highlight seams when a repeateduse of the system occurs, because of the fact that many users expressed that they pay greater attentionto seams when they have acquired some familiarity with the interface. Finally, perhaps the mostimportant aspect when a seam is about to be highlighted, is to make sure that the user physically canact and respond to the additional information that comes with the seam.

  • 145.
    Dodla, Krishna Chaitanya
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, The Institute of Technology.
    Does environment affect the user experience?2012Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Many organizations use the internet to reach out to their customers and also offer many services through their websites. Organizations prefer usability study on their developed systems to compare their product/system with the competitors and also to find the difficulties, while real users work on the system. Usability helps organizations to know whether targeted users are able to use the developed system without any problems. Usability testing normally takes place in a controlled environment and conclusions are drawn based on the obtained results. But today’s world has entirely changed with the introduction of better technologies and the people are using products everywhere with the help of portable devices like smart phones, tablet pc devices, portable laptops etc.

    Many researches previously experimented to evaluate the noise effects on participant’s performance and then derived conclusions of its effects. This research is aimed to find the chances of the results of usability testing getting effected in noisy environment compared to controlled environment. Task-Based Usability testing technique was used to find the noise effects in terms of task success rate and task completion time and also, SUS (System Usability Scale) is used to calculate changes in user’s assessments.

    Total 30 participants had participated in this study and all the participants were divided into two groups each consisting of 15 participants. One of the groups has participated in usability testing on selected websites in noisy environment while another group in normal environment. This study produced two different results; first result proves the task success rate and task completion times were affected by the noisy environment and user’s performance was better in calm environment compared to noisy environment. Second result shows user’s assessment IS not affected in any environment. The above situations have been discussed in detail.

  • 146.
    Dogan, Haci
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, The Institute of Technology.
    Case Study of Development of a Web Community With ASP.NET MVC 52014Independent thesis Advanced level (degree of Master (One Year)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    This thesis is a qualitative study, case study, of development of a social web application for Wallyfy. The development framework and architectural choices were Microsoft’s ASP.NET with MVC architecture. By utilizing the case study methodology this thesis tries to give an understanding of the phenomena, project development with the chosen tools, in a natural environment.

    It is noticed that unforeseen variables might affect the development project and the maintainability of the application over time. This case study shows that the chosen development framework and the architecture enables system developers to meet future changes and demands.

    This thesis also shows that case study research methodology is a good tool to study a real life phenomena in its natural environment in software engineering. The case study research is a very wide area of research methodology that can be used out of several different perspectives, therefore it is necessary to have a clear view of perspective for the research.

  • 147.
    Dragisic, Zlatan
    et al.
    Linköping University, Department of Computer and Information Science, Database and information techniques. Linköping University, The Institute of Technology.
    Lambrix, Patrick
    Linköping University, Department of Computer and Information Science, Database and information techniques. Linköping University, The Institute of Technology.
    Blomqvist, Eva
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, Faculty of Science & Engineering.
    Integrating Ontology Debugging and Matching into the eXtreme Design Methodology2015In: Proceedings of the 6th Workshop on Ontology and Semantic Web Patterns (WOP 2015) / [ed] Eva Blomqvist; Pascal Hitzler; Adila Krisnadhi; Tom Narock; Monika Solanki, Rheinisch-Westfaelische Technische Hochschule Aachen University , 2015Conference paper (Refereed)
    Abstract [en]

    Ontology design patterns (ODPs) and related ontology development methodologies were designed as ways of sharing and reusing best practices in ontology engineering. However, while the use of these reduces the number of issues in the resulting ontologies defects can still be introduced into the ontology due to improper use or misinterpretation of the patterns. Thus, the quality of the developed ontologies is still a major concern. In this paper we address this issue by describing how ontology debugging and matching can be integrated in a state-of-the-art ontology development methodology based on ontology design patterns- the eXtreme Design methodology, and show the advantages in a case study based on a real world ontology.

  • 148.
    Drewes, Frank
    et al.
    Umeå University.
    Knight, Kevin
    University of Southern California, Information Sciences Institute.
    Kuhlmann, Marco
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, Faculty of Science & Engineering.
    Formal Models of Graph Transformation in Natural Language Processing (Dagstuhl Seminar 15122)2015In: Dagstuhl Reports, ISSN 2192-5283, Vol. 5, no 3, p. 143-161Article in journal (Other academic)
    Abstract [en]

    In natural language processing (NLP) there is an increasing interest in formal models for processing graphs rather than more restricted structures such as strings or trees. Such models of graph transformation have previously been studied and applied in various other areas of computer science, including formal language theory, term rewriting, theory and implementation of programming languages, concurrent processes, and software engineering. However, few researchers from NLP are familiar with this work, and at the same time, few researchers from the theory of graph transformation are aware of the specific desiderata, possibilities and challenges that one faces when applying the theory of graph transformation to NLP problems. The Dagstuhl Seminar 15122 “Formal Models of Graph Transformation in Natural Language Processing” brought researchers from the two areas together. It initiated an interdisciplinary exchange about existing work, open problems, and interesting applications.

  • 149.
    Dórea, Fernanda C.
    et al.
    Department of Disease Control and Epidemiology, National Veterinary Institute, Sweden.
    Vial, Flavie
    Epi-Connect, Skogås, Sweden.
    Hammar, Karl
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, Faculty of Science & Engineering. Department of Computer Science and Informatics, Jönköping University, Sweden.
    Lindberg, Ann
    Department of Disease Control and Epidemiology, National Veterinary Institute, Sweden.
    Lambrix, Patrick
    Linköping University, Department of Computer and Information Science, Database and information techniques. Linköping University, Faculty of Science & Engineering.
    Blomqvist, Eva
    Linköping University, Department of Computer and Information Science, Human-Centered systems. Linköping University, Faculty of Science & Engineering.
    Revie, Crawford W.
    Atlantic Veterinary College, University of Prince Edward Island, Canada.
    Drivers for the development of an Animal Health Surveillance Ontology (AHSO)2019In: Preventive Veterinary Medicine, ISSN 0167-5877, E-ISSN 1873-1716, Vol. 166, no 1, p. 39-48Article in journal (Refereed)
    Abstract [en]

    Comprehensive reviews of syndromic surveillance in animal health have highlighted the hindrances to integration and interoperability among systems when data emerge from different sources. Discussions with syndromic surveillance experts in the fields of animal and public health, as well as computer scientists from the field of information management, have led to the conclusion that a major component of any solution will involve the adoption of ontologies. Here we describe the advantages of such an approach, and the steps taken to set up the Animal Health Surveillance Ontological (AHSO) framework. The AHSO framework is modelled in OWL, the W3C standard Semantic Web language for representing rich and complex knowledge. We illustrate how the framework can incorporate knowledge directly from domain experts or from data-driven sources, as well as by integrating existing mature ontological components from related disciplines. The development and extent of AHSO will be community driven and the final products in the framework will be open-access.

  • 150.
    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.
    Final reporting for the VASS project: The virtual world meets the authentic world in sensuous and integrated learning2015Report (Other academic)
    Abstract [en]

    The starting point for the Vass project was to conduct a closer examination of how ICT works in an outdoor educational and curriculum controlled context with students in years 4, 5, 6 and 7. VASS stands for virtual world meets a real in sensuous and integrated learning.

    The VASS project has been carried out by Västra Ramlösa school and Miljöverkstaden in Helsingborg as well as National Centre for Outdoor Education (NCU) and SICS East Swedish ICT both based at Linköping University. The project, which has run during the period 2012 – 2015, was made possible through support from the Marcus and Amalia Wallenberg foundation with 1,3 million SEK. Inger Edforss Fuchs, teacher leader at Västra Ramlösa School in Helsingborg has been the project leader.

    The project had three main starting points

    • The teaching is based on a curriculum which gives the starting point for the teaching and learning in school and therefore also for lessons connected to the project.
    • Where we conduct the teaching, meaning the relation to place, is of great importance for the students’ learning. This pedagogical perspective and outlook related to the where-aspect of teaching and learning characterises outdoor education.
    • Teaching in an outdoor educational context can be carried out with the help of ICT.

    There are a number of different examples of the use of ICT in combination with outdoor education, but the focus of this particular project was the close connection to the curriculum and its targets where outdoor education was included as a starting point.

    We choose to present the project here through four different essays which all represent different perspectives. Inger Edforss Fuchs starts by describing the work that has been carried out at her school in Helsingborg. Ingemar Nyman wants to show the gains in environmental theory of pedagogy the schools can make by using IT in outdoor pedagogical work. Mattias Arvola, who does research on the interface between people and digital devices, describes the development work that has been carried out within the framework for the project in his department at Linköping University. In the last essay Anders Szczepanski shares his view of how IT supported outdoor educational work affects the way students and teachers look at learning.

    We would like to thank the Marcus and Amalia Wallenberg foundation for wanting to support this project. Without their help it would not have been possible to carry out the project, which would also have meant that we would not have got this far in the important work on developing the schools’ use of ICT in a curriculum based and outdoor educational context.

    Helsingborg June 2015

    Inger Edforss Fuchs

    Project leader

    Mattias Arvola

    Ingemar Nyman

    Anders Szczepanski

1234567 101 - 150 of 642
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