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  • 1.
    Abghari, Shahrooz
    et al.
    Blekinge Tekniska Högskola, Institutionen för datalogi och datorsystemteknik.
    García Martín, Eva
    Blekinge Tekniska Högskola, Institutionen för datalogi och datorsystemteknik.
    Johansson, Christian
    NODA Intelligent Systems AB, Sweden.
    Lavesson, Niklas
    Blekinge Tekniska Högskola, Institutionen för datalogi och datorsystemteknik.
    Grahn, Håkan
    Blekinge Tekniska Högskola, Institutionen för datalogi och datorsystemteknik.
    Trend analysis to automatically identify heat program changes2017In: Energy Procedia, Elsevier, 2017, p. 407-415Conference paper (Refereed)
    Abstract [en]

    The aim of this study is to improve the monitoring and controlling of heating systems located at customer buildings through the use of a decision support system. To achieve this, the proposed system applies a two-step classifier to detect manual changes of the temperature of the heating system. We apply data from the Swedish company NODA, active in energy optimization and services for energy efficiency, to train and test the suggested system. The decision support system is evaluated through an experiment and the results are validated by experts at NODA. The results show that the decision support system can detect changes within three days after their occurrence and only by considering daily average measurements.

  • 2.
    Adlemo, Anders
    et al.
    Jönköping University, School of Engineering, JTH, Computer Science and Informatics. Jönköping University / School of Engineering.
    Tan, He
    Jönköping University, School of Engineering, JTH, Computer Science and Informatics.
    Tarasov, Vladimir
    Jönköping University, School of Engineering, JTH, Computer Science and Informatics.
    Test case quality as perceived in Sweden2018In: Proceedings - International Conference on Software Engineering / [ed] Michael Unterkalmsteiner, ACM Digital Library, 2018, p. 9-12Conference paper (Refereed)
    Abstract [en]

    In order to reach an acceptable level of confidence in the quality of a software product, testing of the software is paramount. To obtain "good" quality software it is essential to rely on "good" test cases. To define the criteria for what make up for a "good" test case is not a trivial task. Over the past 15 years, a short list of publications have presented criteria for "good" test cases but without ranking them based on their importance. This paper presents a non-exhaustive and non-authoritative tentative list of 15 criteria and a ranking of their relative importance. A number of the criteria come from previous publications but also from discussions with our industrial partners. The ranking is based on results collected via a questionnaire that was sent out to a limited number of randomly chosen respondents in the Swedish software industry. This means that the results are more indicative than conclusive.

  • 3. Aid Kalle Dunkel, Laura Viktorya Chrsitina Matthias Wißotzki
    et al.
    Sandkuhl, Kurt
    Jönköping University, School of Engineering, JTH. Research area Information Engineering.
    State of research in reuse of enterprise models: Systematic literature analysis of CAISE, EMMSAD, ICIS and INCOM2012In: Proceedings of the IADIS International Conference on Information Systems, 2012, p. 82-90Conference paper (Refereed)
    Abstract [en]

    The importance of managing organizational knowledge of enterprises has been recognized for decades. The systematic development and reuse of organizational knowledge is expected to improve the competitiveness of the enterprise. While the practice of “reuse” is common in general computer science there is still a lack of surveys in regard to reuse in enterprise modeling. This document reviews four different papers presented at information systems conferences over the last seven years: CAISE, EMMSAD, ICIS, and INCOM. Our analysis indicates that the majority of research is realized by case studies, theoretical frameworks and mostly on business process modeling aspects of enterprise models.

  • 4.
    Al-Otaibi, Ahmad
    et al.
    Jönköping University, School of Engineering, JTH, Computer and Electrical Engineering.
    Hamed Oraibi, Yaser
    Jönköping University, School of Engineering, JTH, Computer and Electrical Engineering.
    AUTOMOTIVE BUS SYSTEM SCALABILITY2015Independent thesis Basic level (degree of Bachelor), 180 HE creditsStudent thesis
    Abstract [en]

    Abstract

    Purpose: The purpose of these theses is to build a deep understanding of CAN-FD and how does it work in the network.

    Method:The methods are literature studies that build on scientific books, data sheets, white papers, articles and interviews. 

    Findings: This research shows that the scalability of CAN-FD is the same in Classic CAN. Supporting high bit rate and increasing the bandwidth for CAN-FD is the only gap between them. In addition, the result shows that the CAN-FD doesn’t work on Partial Networks.

    Implications: The idea of this report was interesting for the companies that have needs for CAN-FD, which help to increase their knowledge about CAN-FD.

    Limitations: A Qualitative method was a useful method to reach the needs of this study. This method leads to real results that have been done in the other studies. The only missing for the authors is the scientific research that could build on real experiments and measurements on the hardware or software was not available under this research and this could lead to more clear results.

    Limitations: A Qualitative method was a useful method to reach the needs of this study. This method leads to real results that have been done in the other studies. The only missing for the authors is the scientific research that could build on real experiments and measurements on the hardware or software was not available under this research and this could lead to more clear results.

  • 5.
    André, Samuel
    et al.
    Jönköping University, School of Engineering, JTH, Product Development. Jönköping University, School of Engineering, JTH. Research area Product Development - Computer supported engineering design.
    Elgh, Fredrik
    Jönköping University, School of Engineering, JTH, Product Development. Jönköping University, School of Engineering, JTH. Research area Product Development - Computer supported engineering design.
    Modeling of transdisciplinary engineering assets using the design platform approach for improved customization ability2018In: Advanced Engineering Informatics, ISSN 1474-0346, E-ISSN 1873-5320, Vol. 38, p. 277-290Article in journal (Refereed)
    Abstract [en]

    Original equipment suppliers (OES) that develop unique products are continuously faced with changing requirements during both the quotation and product development processes. This challenge is a different reality from companies that develop off-the-shelf products for the end consumer, which use fixed specifications and where product platforms have been a strong enabler for efficient mass customization. However, product platforms cannot adequately support companies working as OES. The reason is that a high level of customization is required which means that interfaces cannot be standardized, the performance is not negotiable, requirements are not initially fixed, and the specific system interacts with, is affected by, or affects other systems that are simultaneously developed in a transdisciplinary environment. The design platform (DP) approach provides a coherent environment for heterogeneous and transdisciplinary design resources to be used in product development by supporting both designing and off-the-shelf solutions. This research describes the introduction, application and further development of the DP approach at an automotive supplier to support the development of customized solutions when traditional modularity or platform scalability do not suffice. A computer tool called Design Platform Manager has been developed to support the creation and visualization of the DP. The support tool has a connection to a product data management database to link the platform model to the various kinds of engineering assets needed or intended to support variant creation. Finally, the support tool was evaluated by the case company representatives showing promising results. 

    The full text will be freely available from 2020-08-08 00:00
  • 6.
    Beijert, Lotte
    Jönköping University, Jönköping International Business School, JIBS, Informatics.
    Designating Legacy Status to IT Systems: A framework in relation to a future-oriented perspective on legacy systems2016Independent thesis Advanced level (degree of Master (Two Years)), 30 credits / 45 HE creditsStudent thesis
    Abstract [en]

    Organizations that have come to depend on legacy systems face quite a paradoxical problem. Maintaining the system might prove ineffective in accommodating necessary changes, but a system migration project is expensive and incurs a high amount of risk. Organizations are therefore hesitant to respond to the legacy system problem by undertaking action. Legacy system are often not causing their organization any problems at present, but a focus on the future with regard to the legacy system problem is lacking. This results in IT systems reaching an end-of-life state. The research therefore set out to explore a future-oriented perspective on legacy systems by means of observation, a literature review and a survey. The researcher found the key concept of a future-oriented perspective to be that any system that is limiting an organization to grow and innovate can be regarded as a legacy system. A framework to designate legacy status to IT systems is proposed in order to guide practitioners to acknowledge a problematic IT system to facilitate appropriate response at the right time. In relation to a future-oriented perspective, when to designate legacy status is best determined according to the system’s flexibility towards change and the alignment of the system with the business. In that regard, IT systems are end-of-life systems when they are too inflexible to change, and as a result become unaligned with either current operations or a future business opportunity or need.

  • 7.
    Berzisa, Solvita
    et al.
    Riga Technichal University.
    Bravos, George
    University of Manchester.
    González, Tania Cardona
    Everis, Valencia.
    Czubayko, Ulrich
    SIV.AG, Roggentin.
    España, Sergio
    Polytechnic University of Valencia.
    Grabis, Janis
    Riga Technical University.
    Henkel, Martin
    Stockholms universitet.
    Jokste, Lauma
    Riga Technical University.
    Kampars, Janis
    Riga Technical University.
    Koç, Hasan
    University of Rostock.
    Kuhr, Jan-Christian
    SIV.AG, Roggentin.
    Llorca, Carlos
    Fresh T Ltd, Daresbury.
    Loucopoulos, Pericles
    University of Manchester.
    Pascual, Raúl Juanes
    Everis, Valencia.
    Pastor, Oscar
    Polytechnic University of Valencia.
    Sandkuhl, Kurt
    Jönköping University, School of Engineering, JTH, Computer and Electrical Engineering. Jönköping University, School of Engineering, JTH. Research area Information Engineering.
    Simic, Hrvoje
    Croz doo, Zagreb.
    Stirna, Janis
    Stockholms universitet.
    Valverde, Francisco Giromé
    Polytechnic University of Valencia.
    Zdravkovic, Jelena
    University of Rostock.
    Capability Driven Development: An Approach to Designing Digital Enterprises2015In: Business & Information Systems Engineering, ISSN 1867-0202, Vol. 57, no 1, p. 15-25Article in journal (Refereed)
    Abstract [en]

    The need for organizations to operate in changing environments is addressed by proposing an approach that integrates organizational development with information system (IS) development taking into account changes in the application context of the solution. This is referred to as Capability Driven Development (CDD). A meta-model representing business and IS designs consisting of goals, key performance indicators, capabilities, context and capability delivery patterns, is being proposed. The use of themeta-model is validated in three industrial case studies as part of an ongoing collaboration project, whereas one case is presented in the paper. Issues related to the use of the CDD approach, namely, CDD methodology and tool support are also discussed.

  • 8.
    Björklund, Thomas
    et al.
    Jönköping University, School of Engineering, JTH, Computer and Electrical Engineering.
    Wahlund, Christer
    Jönköping University, School of Engineering, JTH, Computer and Electrical Engineering.
    GIS-IMPLEMENTATION AV BING MAPS TILL WINDOWS 8 OCH WINDOWS PHONE 82013Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    This thesis has been performed at consulting firm Sweco Position in Jönköping. The thesis is divided into two main sections: theoretical and practical. The theoretical section contains an investigation into the possibilities of implementing a geographical information system (GIS) for administrations of wells with the integration of Bing Maps for Windows 8 and Windows Phone 8. The practical work comprises the development of a prototype for Windows 8 and Windows Phone 8.

    The students review the Model-View-ViewModel-pattern on a theoretical basis, compares the differences between Windows 8 Pro and Windows RT. The thesis also contains and investigation into the pros and cons of a web based application compared to a native one.

    The result of the thesis will be comprised of a GIS-service developed in C# in co-operation with XAML with the options of saving data locally and a WMS-based service layer for Windows 8 and Windows Phone 8.

  • 9.
    Borg-Rosén, Mikael
    et al.
    Jönköping University, School of Engineering, JTH, Computer and Electrical Engineering.
    Rasmussen, David
    Jönköping University, School of Engineering, JTH, Computer and Electrical Engineering.
    Bordsbokningssystem i HTML 52012Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Det finns idag få system som ger en god överblick av en restaurangs bokningar och bordsplaceringar. Oftast används papper och penna som ställer till med problem när kunder avbokar, ändrar deras bokning eller helt enkelt inte kommer till restaurangen. Det är även svårt att avgöra huruvida restaurangen är fullbokad eller ej.

    Denna rapport behandlar utvecklingen av ett webbaserat bordsbokningssystem för restauranger på uppdrag av en restaurangägare i Jönköping. Systemet ska ge en grafisk överblick av en restaurangs bokningar och hur alla bord ska stå placerade under en kväll. Då systemet webbapplikationen ska ha flera användare, som använder olika enheter, krävs det att systemet ska vara plattformsoberoende.

    Med hjälp av HTML5 undersöks det huruvida det går att göra detta system offlinekompatibelt, då uppdragsgivaren önskar att systemet är åtkomligt då Internetuppkopplingen försvinner. Det undersöks även hur en applikation görs användarvänlig och lättmanövrerad samt hur kommunikationen mellan klient och server görs mest effektivt.

    Projektet är uppdelat i fyra delar; grafiskt användargränssnitt, webbapplikation, datahantering och serverkommunikation, som i sin tur är indelade i två kategorier; klient och server. De två kategorierna användes som en bas för hela projektets gång, från litteraturgenomgång och forskning till implementation.

    Den slutliga webbapplikationen blev ett plattformsoberoende och offlinekompatibelt bordsbokningssystem, där användaren får en grafisk överblick av en vald dags bokningar samt bordsplaceringar.

  • 10.
    Cardestål, Anna
    et al.
    Jönköping University, School of Engineering, JTH, Computer and Electrical Engineering.
    Kara, Bhavina
    Jönköping University, School of Engineering, JTH, Computer and Electrical Engineering.
    Studie av olika metoder för att mobilanpassa stora CMS webbplatser2013Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The work has been performed in collaboration with Jönköping University. The aim of this work has been to study different methods for mobile adaption of large CMS (Content Management System) websites, where the website of Jönköping has been used as a reference.

    The website at Jönköping University is used daily by current students, faculties, prospective students and external users. Research carried out by the University shows that the use of mobile devices has increased, and it is therefore necessary to examine the mobile adaptation of the large CMS website.

    A layout proposal has been suggested by determining which method that is most relevant for mobile adaption of a large CMS website. The website should adapt to different resolutions and devices according to how the existing website is based in the current situation. Emphasis has been put on menu operations, to navigate through the large website in a user-friendly way. This is going to be a basis for the University in the development of the mobile website.

    Based on the results of the choice of method for mobile adaptation, the students have come to the conclusion that the relevant method for a large CMS website is responsive web design. But the choice of method for mobile adaptation can also be based on the need, purpose and target group that a company or organization has with the website.

    The work ends with a conclusion and discussion where their opinions have been raised. The conclusion that the students have come up with is that the benefits of responsive web design and the solution of the menu navigation, is the right option for Jönköping University website.

  • 11.
    Carlsson, Fredrik
    et al.
    Jönköping University, School of Engineering, JTH, Computer Science and Informatics.
    Eriksson, Klas-Göran
    Jönköping University, School of Engineering, JTH, Computer Science and Informatics.
    Comparison of security level and current consumption of security implementations for MQTT2018Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    IoT is a rapidly growing area with products in the consumer, commercial and industrial market. Collecting data with multiple small and often battery-powered devices sets new challenges for both security and communication. There has been a distinct lack of a IoT specific communication protocols. The industry has had to use bulky interfaces not suitable for resource-constrained devices. MQTT is a standardised communication protocol made for the IoT industry. MQTT does however not have built-in security and it is up to the developers to implement a suitable security countermeasure. To evaluate how different security countermeasures impact MQTT in complexity, current consumption and security the following research questions are answered.

    How do you derive a measurement from the SEF that can be compared with a current consumption measurement?

    Which level of security, according to the SEF, will RSA, AES and TLS provide to MQTT when publishing a message to a broker?

    What level of complexity is added to MQTT when using chosen security countermeasure?

    Which of the analysed security countermeasure upholds an adequate security level while also having a low current consumption?

    To answer the above research questions an experiment approach has been used. Implementations of TLS, RSA and AES have been evaluated to measure how they affect the security level and current consumption of an MQTT publication, compared to no security countermeasures at all.Both RSA and AES had the same security level, but the current consumption for RSA was four times higher. The experiment showed that the security level is significantly higher for TLS, while it also has the highest current consumption. The security countermeasure evaluated differs greatly. TLS provides complete protections, while RSA and AES lacks authentication and does not ensure integrity and non-repudiation.Even if the current consumption for TLS is higher, the security it provides make it unreasonable to recommend any of the other security countermeasure implementations.

  • 12. Christiner, Frank
    et al.
    Lantow, Birger
    Sandkuhl, Kurt
    Jönköping University, School of Engineering, JTH. Research area Information Engineering.
    Wißotzki, Matthias
    Multi-dimensional Visualization in Enterprise Modeling2012In: Business Information Systems Workshops: BIS 2012 International Workshops and Future Internet Symposium, Vilnius, Lithuania, May 21-23, 2012 Revised Papers / [ed] Witold Abramowicz, John Domingue, Krzysztof Węcel, Springer, 2012, p. 139-152Conference paper (Refereed)
    Abstract [en]

    Enterprise modeling (EM) is a discipline supporting business and IT alignment by providing means for capturing, visualizing and improving different perspectives of an enterprise, including processes,organization structures, products, systems, and business objectives. However, there is a lot of relevant information besides the one presented in enterprise models. Including such information into enterprise models or an integrated presentation of model and data view is supposed to ease decision making for stakeholders in organizations by providing contextual information for the decision at hand. Additional information however usually means additional complexity. This paper explores possibilities of an integrated presentation guided by the following questions: (1) What kind of complementary information should be visualized in an enterprise model?  (2) How can the information be visualized?  (3) How can the content of a specific visualization be adapted by the business stakeholder using it?

    Possibilities and benefits of enhancing the existing enterprise models with visualization of additional information are illustrated using a small case study.

  • 13.
    Dubois, Simon
    Jönköping University, School of Engineering, JTH. Research area Information Engineering.
    Offline Approximate String Matching forInformation Retrieval: An experiment on technical documentation2013Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Approximate string matching consists in identifying strings as similar even ifthere is a number of mismatch between them. This technique is one of thesolutions to reduce the exact matching strictness in data comparison. In manycases it is useful to identify stream variation (e.g. audio) or word declension (e.g.prefix, suffix, plural).

    Approximate string matching can be used to score terms in InformationRetrieval (IR) systems. The benefit is to return results even if query terms doesnot exactly match indexed terms. However, as approximate string matchingalgorithms only consider characters (nor context neither meaning), there is noguarantee that additional matches are relevant matches.

    This paper presents the effects of some approximate string matchingalgorithms on search results in IR systems. An experimental research design hasbeen conducting to evaluate such effects from two perspectives. First, resultrelevance is analysed with precision and recall. Second, performance is measuredthanks to the execution time required to compute matches.

    Six approximate string matching algorithms are studied. Levenshtein andDamerau-Levenshtein computes edit distance between two terms. Soundex andMetaphone index terms based on their pronunciation. Jaccard similarity calculatesthe overlap coefficient between two strings.

    Tests are performed through IR scenarios regarding to different context,information need and search query designed to query on a technicaldocumentation related to software development (man pages from Ubuntu). Apurposive sample is selected to assess document relevance to IR scenarios andcompute IR metrics (precision, recall, F-Measure).

    Experiments reveal that all tested approximate matching methods increaserecall on average, but, except Metaphone, they also decrease precision. Soundexand Jaccard Similarity are not advised because they fail on too many IR scenarios.Highest recall is obtained by edit distance algorithms that are also the most timeconsuming. Because Levenshtein-Damerau has no significant improvementcompared to Levenshtein but costs much more time, the last one is recommendedfor use with a specialised documentation.

    Finally some other related recommendations are given to practitioners toimplement IR systems on technical documentation.

  • 14.
    Eddie, Bäckman
    et al.
    Jönköping University, School of Engineering, JTH, Computer and Electrical Engineering.
    Stjerneklev, Jacob
    Jönköping University, School of Engineering, JTH, Computer and Electrical Engineering.
    Analys av NIR hårdvaruuppsättning samt metod för fotografering av individer i fordon2016Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Abstract

    Purpose – To study the possibility of using a NIR hardware solution to photograph individuals in a private vehicle as well as an analysis of its images.

    Method – A study of existing theories around the NIR-method’s performance in selected conditions and individual tests were performed to examine if the literature statements were valid for this study. Two empirical tests have been carried out, the first was carried out at Kapsch test track and the other outside the test track in a single stationary test. An interview which formed the basis for the assessment on the quality of empirical data with a focus on computer-based detection of the number of individuals in the vehicle.

    Findings – The results have demonstrated the potential of the NIR method’s performance in a fully automated detection system for the number of individuals inside the vehicle. Empirical data indicates that the method can depict individuals inside vehicles of sufficiently high quality, but it is greatly affected by reflections, weather and light conditions.

    Implications – Result supports the assumption that the NIR method using an external light source can be used to image the interior through a varying number of weather and lightning conditions. The study originated until the results suggested that a NIR-based hardware setup can create images with high enough quality for the human eye to be able to detect the number of individuals inside the vehicle.If the overall performance into account, it suggests that the main problem with the use of the hardware set is to maintain the quality of the whole sample and that the crucial variables for the method’s performance is the influence of light and reflection conditions.

    Limitations – The major limitations have been that we limited ourselves to a subjective analysis of the selection and assessment on the image features for computer-based detection of the number of individuals in the vehicle. We were limited to two tests, one in tough conditions where only the driver was in the vehicle and the second stationary test, where the focus was on the number of people in vehicles and light sources impact on the result.

  • 15.
    Forsberg, Alexander
    Jönköping University, School of Engineering, JTH, Computer and Electrical Engineering.
    Utvärdering av HyperLynx Signal Integrity genom jämförelse av simulerade och uppmätta signaler2013Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Simulations are an important part of the process of designing new computer boards at the Centre of Excellence - Computers at Saab AB in Jönköping. The earlier problems and weaknesses in the design can be found during the design process the less time and money it will take to fix them. The engineers at CoE uses HyperLynx, an analysis and simulation software from Mentor Graphics, to simulate all the critical nets at the board. By doing so, the majority of the problems can be fixed before the prototyping stage.

    However, the engineers need to know how the simulated signals relate to real signals if the simulator is to be useful. Therefore the question to be answered in this study is how well does the simulated signals in HyperLynx imitate real signals? The question was answered by comparing simulated signals with measurements of corresponding signals on a test board.

    Overall the shapes of the signals are matching for both which reflections occurs and the timing of the reflections. The only noticeable difference found throughout the study is a slightly smaller amplitude of the reflections for the simulated signals compared to the corresponding measured signal. Due to these results, HyperLynx can be considered a high quality simulator.

  • 16.
    García Cívico, Ana Belén
    Jönköping University, School of Engineering, JTH, Computer and Electrical Engineering.
    Analysis, design and implementation of a Web prototype of social networking for students.2012Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The idea would be to unify it into a system where people from different countries can provide information on their hometowns, helping people who are interested in them. The system created is a collaborative Web system in which people can access and edit contents by entering information about their hometowns, and this information will help other people who decide to move to the different cities.

  • 17.
    Ghazawneh, Ahmad
    et al.
    Jönköping University, Jönköping International Business School, JIBS, Business Informatics.
    Henfridsson, Ola
    Chalmers University of Technology.
    Micro-Strategizing in Platform Ecosystems: A Multiple Case Study2011In: Proceedings of the International Conference on Information Systems, ICIS 2011, Shanghai, China, December 4-7, 2011. Association for Information Systems 2011, Shanghai, China: AIS , 2011, p. 1-19Conference paper (Refereed)
    Abstract [en]

    The strategy by which a platform owner manages the future trajectory of its platform involves many unknowns. In particular, the ambition to simultaneously control the platform and distribute design capability to users is challenging. While there is an emerging literature on strategy in platform ecosystems, little empirical evidence exists about the series of strategic actions that platform owners conduct to create value in an ecosystem context. Drawing on a strategy-as-process perspective, this paper augments existing platform perspectives by seeking to understand the micro-strategizing of a platform owner. To this end, we report a multiple case study of Apple’s use of application programming interfaces for generating value from the iPhone platform. Our comparative analysis identifies and explores five different micro-strategies that can be enacted proactively or reactively: counteracting, monetizing, resourcing, securing, and sustaining. The paper concludes with a number of theoretical and practical implications of these micro-strategies and their interaction.

  • 18.
    Gustavsson, Henrik
    Jönköping University, School of Engineering, JTH, Computer and Electrical Engineering.
    Utvärdering av simulatorer och emulatorer för inbyggda system2011Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    This thesis has been carried out in cooperation with Saab Electronic Defence Systems in Jönköping which has a wide range of products, mainly for Avionic applications. In order to evaluate and verify their design it is often required to simulate behaviour and debug as early as possible. System simulation can enable software development and debug to commence long before a hardware prototype is available and also scale with the size and complexity of the system.

    Another benefit of simulation is to more easily determine root causes to system crashes, establish worst case execution time cases and making fault injection. Therefore this thesis will focus on evaluating simulators and emulators, as development- and testing tools.

    This report contains a marketing research, where ten emulators and simulators were found. Of these, two simulators were chosen for further investigation; WindRiver Simics and Imperas OVPSim. The evaluations considered both usability and debugging features as well as comparative tests between real hardware and the simulated environment. The results show that simulators can help in product development, but they are not yet optimal for evaluating hardware. This is because deviations may occur in execution times between real and simulated hardware architectures.

  • 19.
    Gustavsson, Josef
    Jönköping University, School of Engineering, JTH, Computer and Electrical Engineering.
    Aktiesammanställare med teknisk analys och simulation2013Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Websites today only offer simpler form of technical analysis and are not fun to use, therefore student decided to build a website that makes technical analysis a bit more fun by giving user possibility to experiment with settings for technical indicators and also see clear visible results from analysis. Student decided to build website in ASP.NET. Technical indicators for this project only consist of those who give buy and sell-signals via cross-over, no divergence or pattern finding.This project has three questions that define this project. It’s important that there is good functionality so that performing an analysis is perceived as simple, one question is therefore; what functionality for website is needed in order for analysis to be perceived as more simple?Technical analysis is a pretty complex subject and demands an interface that is perceived as easy to understand and easy to use, it’s therefore important that the interface is well designed, second question is therefore; how should the interface be designed to be user-friendly?When systems grow large they often become hard to develop and later on unmaintainable because of the accumulated complexity and dependency between classes, the code is a mess, the last question is therefore; how can the systems complexity be eased with object-oriented design principles?Jakob Nielsens ten heuristics for User Interface Design were used as inspiration for designing the interface for the website. The system design follows SOLID principles, some pattern-design were also used because pattern-design often fulfills SOLID principles or makes for pretty good solutions in regular code-problems.At the beginning of the project the student did a small research to find out what was needed in order to complete project. Work-method for project follows agile development where decisions were made on a weekly basis. The project was divided into three phases where each phase was strongly coupled to a specific area of responsibility. Prototypes for interface were made and used as a basis for the resulting interface.The project led to a working website with good functionality. Filter was considered as important in order to ease shaping of analysis because the user could more easily sort and pick stock. The student assumed that the user would want fast and easy access to their stock so portfolio management were implemented so that user could more easily get to stock that was considered as favorites. The interface follows to a big extent Jakob Nielsens ten heuristics for User Interface Design and is proven by comparing interface with principles. The same goes for design of the system, design is proven by comparing with principles, still to this day system is considered easy to continue development.Student made the conclusion that SOLID principles were very important in order for the system to maintain its health and took experience from these principles. Student became happy with the interface but more focus could’ve been given for a more interactive interface because it might’ve been perceived as more intuitive.

  • 20.
    Gustavsson, Nicklas
    et al.
    Jönköping University, School of Engineering, JTH, Computer and Electrical Engineering.
    Isaksson, Tobias
    Jönköping University, School of Engineering, JTH, Computer and Electrical Engineering.
    Ungurjanovic, Robert
    Jönköping University, School of Engineering, JTH, Computer and Electrical Engineering.
    Implementation av administratörsfunktioner för QuickPick2014Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    This thesis is about development of administrative functions for the application QuickPick, which is a value system for warehouses. Today, there are no functions for the user to sort, group or filter the view settings in the application. Those who use the system need to contact Qsys Sverige AB to make this changes. Where also this thesis has been performed. The thesis deals theoretically with how a warehouse works, how you program in a general way, so it will be easier to continue the development of the functions and make a user friendly system for an administrator. The new functions will be available in a web-portal for administrators and it has been developed in C# and ASP.NET. The result of the thesis will be administrative functions for the view settings in a web-portal which can be used in the QuickPick application.

  • 21.
    Hejderup, Jacob
    Jönköping University, School of Engineering, JTH, Computer Science and Informatics.
    Multipla loggar för ökad programförståelse: Hur multipla loggar kan bidra till programutveckling och programförståelse2018Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    To develop or maintain a piece of code requires a certain level of comprehension of the developed or maintained software itself. To achieve this goal the developer uses a set of different tools. This report will focus on two types of debug tools: single trace and multiple traces. The purpose of the study is to examine how multiple traces can contribute to an improved program comprehension. The study was carried out through experiments and interviews. The experiment consisted of 10 typical comprehension tasks in a development context. Eclipse and Trace Compass were used to display the logs. Eclipse is a development environment that shows the source code. Trace Compass is a tool for inspecting traces.  After the experiment, an interview was carried out with the subjects of the experiment. The results of this study indicated that multiple traces could have an advantage over a single trace when the task is to understand the interactions between code components in a software system. One of the limitations of the study was due to the limited number of subjects taken part in the study and cannot be used to draw a more general conclusion. 

  • 22.
    Hjertberg, Tim
    et al.
    Jönköping University, School of Engineering, JTH, Product Development. Jönköping University, School of Engineering, JTH. Research area Product Development - Computer supported engineering design.
    Stolt, Roland
    Jönköping University, School of Engineering, JTH, Product Development. Jönköping University, School of Engineering, JTH. Research area Product Development - Computer supported engineering design.
    Elgh, Fredrik
    Jönköping University, School of Engineering, JTH, Product Development. Jönköping University, School of Engineering, JTH. Research area Product Development - Computer supported engineering design.
    A tool for obtaining transparency and traceability in heterogeneous design automation environments2018In: Computer-Aided Design and Applications, ISSN 1686-4360, Vol. 15, no 4, p. 488-500Article in journal (Refereed)
    Abstract [en]

    Today, CAD-system are used for much more than just geometric modeling. They are complemented by various software and information sources forming a complete environment for handling all life-cycle aspects of the product. In such systems, the CAD-system works as a central hub. The software and information sources may be of various types making the system highly heterogenous. This presents problems with transparency and traceability in the system making long term management difficult. In this paper, a novel tool is presented to keep track of the dependencies between the various parts of such systems providing an overview and making it possible to predict the effect of proposed changes and facilitating long term management. The tool is tested in a highly heterogeneous environment at a manufacturer of aerospace components, with the result that the traceability is expected to increase at the expense of that time must be spent on defining dependencies and meta-information as the system is evolving.

  • 23.
    Huber, Kim
    et al.
    Jönköping University, School of Engineering, JTH, Computer and Electrical Engineering.
    Rogvall, Camilla
    Jönköping University, School of Engineering, JTH, Computer and Electrical Engineering.
    Utvärdering av Jönköpings kommuns beslutsstödssystem QlikView2012Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Students at Jönköping School of Engineering were given an assignment from Jönköping municipality, to evaluate their decision support system, QlikView. The students have also developed proposals for improvement with focus on usability.The Jönköpings municipality has currently got 11000 employees and consists of nine different administrations. The target group for QlikView is approximately 600 first-line managers.

    The intention of QlikView is that the users can get an overall picture of their business by having all information in just one system.

    The purpose of the thesis is to obtain a picture of what the users think about the system today and present relevant suggestions for improvement, which the Jönköping municipality can use when the introduction of the new version of QlikView takes place. The research questions that the study aims to answer are:

    • Has QlikView got a user friendly interface?• How can the interface be improved to become more user friendly?

    Theories that this work is based on is Jacob Nielsens ten usability principles and Ben Schneidermans eight golden rules. They are both well-known authors in the subject of interaction design. The thesis also deals with theories regarding how an evaluation should be performed and how you collect data in the most positive way.

    The evaluation is started with a questionnaire that was sent out to the employees who had been logged into the system the past six months, the students also carried out interviews with 6 first-line managers. The result from the questionnaire and the interviews is presented in both diagrams, tables and in running text.

    In the questionnaire, 44% of the respondents thought that the usability in QlikView was low. Opinions that stood out were that the selections are marked in an unclear way and that respondents found it difficult to know how to use the system.

    The six interviewed persons agreed that they all wanted to have a search box instead of the search function that today is ”hidden”.

    The suggested improvements that are presented are based on theories and result from the questionnaire and interviews.

    The work ends with a discussion and a conclusion. The conclusion is that the Jönköping municipality should make some changes in terms of functions and layout to enhance the usability. The students hope that this work will help the Jönköping municipality in their new version of QlikView.

  • 24.
    Huusko, Emil
    Jönköping University, School of Engineering, JTH, Computer and Electrical Engineering.
    Utveckling av dokumenthanteringsprogram för investeringsprojekt2013Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    This report describes a further development of an application for handling documents in investment projects. The older version of the application is developed in VB6, which is a relatively out-of-date programming language. This application is also developed for a specific customer and handles therefore only their needs regarding the handling of documents.

    There are two main reasons for the further development of this application. The first is modernization, i.e. that the new application is going to be developed in C#, which is both a more modern programming language and adds new opportunities to further develop the application into a web-based application. The second and most important reason is that the new application shall be more general and easy to adapt for several costumers needs.

    The most important function for the further development was that you should not have to change anything in the code to customize the application for different customers, but instead just have to modify a database which then defines the structure of the application.

  • 25.
    Isaksson, David
    et al.
    Jönköping University, School of Engineering, JTH, Computer Science and Informatics.
    Fredriksson, Jonas
    Jönköping University, School of Engineering, JTH, Computer Science and Informatics.
    Diametermätning av timmer med stereovision2018Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Purpose – The purpose of this study is to develop a method for measuring the diameter of piled logs on a truck in a picture that has skewed perspective and where the end surfaces are at different depths in relation to each other. The intent of this method is to further streamline log measurement in the logging industry.

    Method – This study was conducted in collaboration with Cind AB, and the work was split in two phases with Design Science Research as research method. In Phase 1, images with log end surfaces were rectified manually, and in Phase 2 a point cloud was used to estimate the rectification plane. This was done with a stereo camera rig in scale 1:25 on a total of 139 logs. All logs were digitally measured in the rectified images and manually measured with a digital caliper. A confidence interval for the difference was calculated to assess the measurement accuracy.

    Findings – The confidence interval from Phase 1 indicates that the developed method has potential when the rectification plane is placed correctly, which Phase 2 shows is a difficult and complex task.

    Conclusions – The developed method did not reach the desired measurement accuracy of 5% margin of error, which means that the goal of the study was not achieved. It would be possible to measure the end surfaces of logs with high precision if the point cloud is of a sufficiently high quality.

    Limitations – The software that utilizes point cloud information to rectify the images is a modified version of Cind’s proprietary product. The dataset that is used in this study is collected solely through Cind’s test rig.

  • 26.
    Jackson, Mats
    et al.
    ABB Management Consultants AB, Västerås, Sweden.
    Johansson, Christer
    Linköping University, Sweden.
    Real Time Discrete Event Simulation of a PCB Production System for Operational Support1997In: Proceedings of the 1997 Winter Simulation Conference, 1997, p. 832-837Conference paper (Refereed)
  • 27.
    Johansson, Ann
    Högskolan Väst.
    Confusions in Writing Use Cases2004In: Proceedings of the 2nd International Conference on Information Technology for Application (ICITA 2004), 2004Conference paper (Refereed)
    Abstract [en]

    Use cases are often very powerful and are popular to use when defining functional requirements for a system. UML supports the use of use cases in object-oriented systems development. However it is not always clear for systems developers on how to use use cases. It can be very confusing in knowing what to include or how to structure use cases. In this study a weather station system has been analysed with an object-oriented approach. Some problems occurred on how to structure scenarios and use cases. Problems also arose on what to describe in the use cases. The problems were analysed and assessed in this paper. The paper points out that the need for guidelines is of great importance.

  • 28.
    Johansson, Sonny
    Jönköping University, School of Engineering, JTH, Computer and Electrical Engineering.
    “Bring your own device” i svenska företag och organisationer2014Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Most companies and organizations today depend on technology connected to the Internet. Schools and offices have therefore been providing computers, phones and other technology to the employees. The recent technological development and decline in prices for technology have contributed to making these products a part of everyday life for most people. This has made it very common for employees and students to bring their own devices into school and workplaces.

    The aim of this study is to define what "Bring your own device" means for Swedish companies and organizations and how it has been implemented in those. The aim is not mainly to generalize to all Swedish companies but create an understanding how the trend is used to provide a basis for continued research in this area. The questions this thesis aims to answer is:

    1. What does the term "Bring your own device" mean in the Swedish organizations and companies in which it is implemented?
    2. How is "Bring your own device" implemented in Swedish organizations and companies?
    3. What are the policies and guidelines for the Swedish organizations and companies that have implemented "Bring your own device", and how is compliance?

    A pragmatic approach has been used to incorporate previous studies while keeping the interview questions open to new approaches. The structure has been small-N studies that go deep into a number of cases, in order to more profoundly explain a phenomenon. Mail interviews have been used to collect data from the persons responsible for "Bring your own device" in the different organisations.

    The result shows that companies see "Bring your own device" as a trend where employees bring their own devices rather than firms providing employees with devices that they use privately. Respondents have not measured or examined how the introduction of BYOD has affected productivity. It seems, like in foreign studies, to be a lack of clear policies and guidelines regarding the phenomenon.

  • 29.
    Jönsson, Tim
    Jönköping University, School of Engineering, JTH. Research area Information Engineering. Jönköping University, School of Engineering, JTH, Computer and Electrical Engineering.
    Efficiency determination of automated techniques for GUI testing2014Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Efficiency as a term in software testing is, in the research community, a term that is not so well defined. In the industry, and specifically the test tool industry, it has become a sales pitch without meaning.

    GUI testing in its manual form is a time consuming task, which can be thought of as repetitive and tedious by testers. Using human testers to perform a task, where focus is hard to keep, often ends in defects going unnoticed.

    The purpose of this thesis is to collect knowledge on the area efficiency in software testing, but focusing more on efficiency in GUI testing in order to keep the scope focused. Part of the purpose is also to test the hypothesis that automated GUI testing is more efficient than traditional, manual GUI testing.

    In order to reach the purpose, the choice fell to use case study research as the main research method. Through the case study, a theoretical study was performed to gain knowledge on the subject. To gain data used for an analysis in the case study, the choice fell on using a semi-experimental research approach where one automated GUI testing technique called Capture & Replay was tested against a more traditional approach towards GUI testing.

    The results obtained throughout the case study gives a definition on efficiency in software testing, as well as three measurements on efficiency, those being defect detection, repeatability of test cases, and time spent with human interaction. The result also includes the findings from the semi-experimental research approach where the testing tools Squish, and TestComplete, where used beside a manual testing approach.

    The main conclusion deducted in this work is that an automated approach towards GUI testing can become more efficient than a manual approach, in the long run. This is when efficiency is determined on the points of defect detection, repeatability, and time.

  • 30.
    Jönsson, Tim
    et al.
    Jönköping University, School of Engineering, JTH, Computer and Electrical Engineering.
    Olsson, Jesper
    Jönköping University, School of Engineering, JTH, Computer and Electrical Engineering.
    Tredjepartslösning för implementation av stopptidsrapportering till material planerings system2012Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
  • 31.
    Karlsson, Joel
    et al.
    Jönköping University, School of Engineering, JTH, Computer and Electrical Engineering.
    Bengtsson, Carl
    Jönköping University, School of Engineering, JTH, Computer and Electrical Engineering.
    Webbaserat resultat och uppföljningsprogram för idrottsförening2012Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Students at the School of Engineering at Jönköping University have on behalf of the swimming organization “Nässjö Sim och Livräddningssällskap” conducted research on how to monitor and evaluate swimmers and swimming groups in a simple and efficient manner with a focus on usability and user friendliness. Since no system existed that could meet these requirements, the client had a desire to tailor and develop such a system. The purpose of this work was to develop a system that would work as a tool to be used by coaches and swimmers alike and allow them to eventually follow the development of swimmers and swimming groups. The organization also wanted to have the ability to create tests and exams, both for land and water training, register these in the system and in a structured way know which swimmers took and passed these.

    For this thesis, the following questions functioned as a framework for progress.

    • Usability
      • How to design a usable system and what is required?
    • System
      • What type of system is best suited to meet the client's requirements and preferences?
    • Competition results
      • How can one retrieve all the competition results for swimmers of Nässjö SLS?
    • Database
      • What type of database is best suited to easily share data with an external existing database?

    Usability has been the main focus throughout the project. In order to succeed and stay on track, the students turned to the usability guru Jakob Nielsen, and his 10 heuristic rules have worked as guidelines. The work is also founded on the theories and tests Nielsen conducted on how people interact with a web-based system.

    The result of the project is a working prototype of the system without access to the competition results as the students together with the client decided that the procedure to access the database containing results from competitions became too difficult, time consuming and costly. From the perspective of functionality, focus turned to a system that can display a development curve for swimmers and swimming groups based on training and the results from tests and exams.

  • 32.
    Khadgi, Vinaya
    et al.
    Jönköping University, School of Engineering, JTH. Research area Information Engineering.
    Wang, Tianyi
    Jönköping University, School of Engineering, JTH. Research area Information Engineering.
    Automatic Creation of Researcher’s Competence Profiles Based on Semantic Integration of Heterogeneous Data sources2012Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    The research journals and publications are great source of knowledge produced by the virtue of hard work done by researchers. Several digital libraries have been maintaining the records of such research publications in order for general people and other researchers to find and study the previous work done in the research field they are interested in. In order to make the search criteria effective and easier, all of these digital libraries keep a record/database to store the meta-data of the publications. These meta-data records are generally well design to keep the vital records of the publications/articles, which has the potential to give information about the researcher, their research activities, and hence the competence profile.

    This thesis work is a study and search of method for building the competence profile of researchers’ base on the records of their publications in the well-known digital libraries. The publications of researchers publish in different publication houses, so, in order to make a complete profile, the data from several of these heterogeneous digital libraries sources have to be integrated semantically. Several of the semantic technologies were studied in order to investigate the challenges of integration of the heterogeneous sources and modeling the researchers’ competence profile .An approach of on-demand profile creation was chosen where user of system could enter some basic name detail of the researcher whose profile is to be created. In this thesis work, Design Science Research methodology was used as the method for research work and to complement this research method with a working artifact, scrum- an agile software development methodology was used to develop a competence profile system as proof of concept. 

  • 33.
    Kullberg, Herman
    et al.
    Jönköping University, School of Engineering, JTH, Computer Science and Informatics.
    Rudbeck, Linus
    Jönköping University, School of Engineering, JTH, Computer Science and Informatics.
    Säkerhetsaspekter hos webbapplikationer: En experimentell studie av en ASP.NET Core webbapplikation2017Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
  • 34.
    Kvist, Sebastian
    et al.
    Jönköping University, School of Engineering, JTH, Computer and Electrical Engineering.
    Landén, Richard
    Jönköping University, School of Engineering, JTH, Computer and Electrical Engineering.
    UTREDNING SAMT UTVECKLING AV ETT PLATTFORMSOBEROENDE GEOGRAFISKT INFORMATIONSSYSTEM2012Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    This thesis have been performed at Sweco Position in Jönköping. The work was split into two, where one part included an investigation regarding the possibility of developing a cross-platform GIS (geographic information system) with HTML5 and CSS3. A prototype would also be developed within this part.

    The second part included development of a cross-platform GIS for a client to Sweco Position. The client operates in the forest sector and had already an existing solution, with many problems. The client required an application with delimited functionality and which was not bound to a specific hardware.

    As the client users often were located in areas with limited Internet access, one additional requirement was that there would be some offline support.

    The students handle subjects within development of GIS, for example map projections, map services and mapping libraries.

    The application came to be developed in HTML5 and ASP.net. The mapping library that was used, was Leaflet 0.3.1.

    The result of this thesis is a cross-platform GIS with offline support. Examples of functionality included is to log positions manually, execute an automatic log function and support for managing which layers and logs that should be visible in the interface.

  • 35.
    Lagerqvist, Alexander
    et al.
    Jönköping University, School of Engineering, JTH, Computer Science and Informatics.
    Lakshminarayana, Tejas
    Jönköping University, School of Engineering, JTH, Computer Science and Informatics.
    IoT Latency and Power consumption: Measuring the performance impact of MQTT and CoAP2018Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    The purpose of this thesis is to investigate the impact on latency and power consumption of certain usage environments for selected communication protocols that have been designed for resource constrained usage. The research questions in this thesis is based on the findings in Lindén report “A latency comparison of IoT protocols in MES” and seeks to answer the following:

    1. ”How does MQTT impact the latency and power consumption on a constrained device?”
    2. ”How does CoAP impact the latency and power consumption on a constrained device?”
    3. ”How does usage environment influence the latency for MQTT and CoAP?”

    This thesis only seeks to explore concepts and usage environments related to wireless sensor networks, internet of things and constrained devices. The experiments have been carried out on a ESP WROOM 32 Core board V2 applying MQTT and CoAP as the communication protocols.

    The overall research method used in this thesis is the experimental research design proposed by Wohlin et al. Experiments have been created to support or disprove hypotheses which are formulated to answer the research questions. The experiments were conducted in test environments, which mimic a real-life wireless sensor network environment. The process is thoroughly recorded to further increase the traceability of this thesis. This decision was made due to a comment Boyle et al. made about the problems with real-life experiments about the wireless communication-based research domain. Where Boyle et al. states that there is “insufficient knowledge” available for the research community.

    The MQTT related latency experiments showed that QoS level 0 had the lowest latency of all the QoS levels. However, the results also showed that QoS 1 and 2 almost had an identical latency. The CoAP related latency experiments did not indicate any obvious trends. The results from the power consumption related experiments were inconclusive since the data was incomplete.

    The usage environment related experiments yielded conclusive results. The data showed that there was a small variation in the latency impact across the various usage environments. Furthermore, the data suggest that CoAP and MQTT had lower latencies in a high signal strength environment compared to a lower signal strength environment. However, it is not clear if there were any unknown factors influencing the results.

  • 36.
    Lantz, Andreas
    et al.
    Jönköping University, School of Engineering, JTH, Computer and Electrical Engineering.
    Agné, Fredrik
    Jönköping University, School of Engineering, JTH, Computer and Electrical Engineering.
    Vägen till en användarvänlig webbapplikation2014Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    För att en applikation ska förenkla användarnas arbetsprocesser finns det utöver funktionalitet ett behov av att applikationen är användarvänlig. Under utvecklingens gång behövs det många gånger göras förändringar i design och funktionalitet. Förändringarna kan vara tidskrävande. Därför kan iterativ utveckling av en designprototyp som en del av utvecklingsfasen minska den totala utvecklingstiden.

    Syftet med examensarbetet är att undersöka om iterativ utveckling av en designprototyp kan bidra till utvecklingen av en användarvänlig webbapplikation. Frågeställningen formulerades på följande vis: Kan iterativ prototypframställning främja utvecklingen av en användarvänlig webbapplikation?

    För att besvara frågeställningen utvecklades en designprototyp iterativt i flera versioner med hjälp av användartester samtidigt som tiden för utvecklingen registrerades. Prototypens utveckling utvärderas senare i rapporten för att få reda på hur den iterativa processen har påverkat designprototypen. Till sist jämförs en liknande webbapplikation, från ett tidigare examensarbete, som ej var iterativt utvecklad med den webbapplikation som utvecklades iterativt i det här examensarbetet.

    Utvecklingen av en designprototyp är mindre tidskrävande eftersom det går snabbare att införa förändringar i den i jämförelse med själva webbapplikationen. Det tidigare examensarbetet, visar sig med hjälp av tester på skärmbilder och med jämförelse med det här arbetet, att det har vissa brister i funktionalitet och användbarhet.

    Slutsatsen blir att det är fördelaktigt med iterativ utveckling eftersom det tar mindre tid att införa förändringar i ett tidigt stadie i en designprototyp och att designfel upptäcks tidigt med hjälp av testanvändare. De förändringarna hade varit tidskrävande att införa direkt i själva webbapplikationen.

  • 37.
    Larsson, Fredrik
    et al.
    Jönköping University, School of Engineering, JTH, Computer and Electrical Engineering.
    Falkesand, Fredrik
    Jönköping University, School of Engineering, JTH, Computer and Electrical Engineering.
    Övervakningsapplikation för Windows 8 surfplatta2013Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Today is there no system that monitors a tolling station without the need to be at the office or the tolling station.

    This report concerns the development of a monitoring application to Windows 8 store app environment on behalf of Combitech AB towards the customer Kapsch TrafficCom. The application was developed for a Windows 8 tablet to monitor a tolling station.

    The user interface was developed in XAML and its logic in C#. Onion Architecture has been used to build the architecture for the application.

    The result of this thesis was a working prototype of a monitoring application for Windows 8 tablet, where the content is generated by a simulator. The application displays information for the user about a specific tolling station, for example passages and events.

  • 38.
    Larsson, Kristian
    et al.
    Jönköping University, School of Engineering, JTH, Computer and Electrical Engineering.
    Larsson, Michael
    Jönköping University, School of Engineering, JTH, Computer and Electrical Engineering.
    HDR och Tone mapping i automatiserade tullsystem2013Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    This report is about how HDR (HighDynamicRange) can be created and used in combination with Tone mapping. This work has been carried out together with Kapsch TrafficCom AB in Jönköping.

    The objective of this project is to:

    • Evaluate and investigate the effects given to pictures by HDR and tone mapping.
    • Evaluate if the technology may lead to improvements in Kapsch’s systems.
    • To construct a program which is able to handle some form of tone mapping or HDR-algorithm.

    These questions will be answered in this report:

    • What kind of effects has HDR and tone mapping-algorithms on pictures?
    • Can the HDR-technology give better data in Kapsch’s systems?

    The research method used in this report is called action research. This means the authors has investigated the technology by reading different documentations and by testing different algorithms to see what kind of result they give. The report describes some of the tests made to see if the technology is appropriate in Kapsch’s system.There is two smaller reports made by the authors which documenting some of the work.The first report describes the work with different settings for a camera to create pictures with HDR-quality. The second report describes the differences between tone mapping-algorithms and different file format. Both reports are included as appendices to this report.In the program created by the authors some larger library’s with standard functions for opening of JPEG-pictures was used. The chosen library’s was MFC and GDI+. The program is developed for a windows environment and handles functions like sharpening with unsharp mask, colour space conversion and tone mapping.

  • 39. Lin, Feiyu
    et al.
    Sandkuhl, Kurt
    Jönköping University, School of Engineering, JTH. Research area Information Engineering.
    Validation of Context-based Ontology Matching2012In: Operations Research and Data Mining ORADM 2012 workshop proceedings, 2012Conference paper (Refereed)
  • 40.
    Lind, Andreas
    Jönköping University, School of Engineering, JTH. Research area Information Engineering. Jönköping University, School of Engineering, JTH, Computer and Electrical Engineering.
    An experimental investigation of a crossover concept for high accuracy indoor positioning systems2015Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    To know your whereabouts is important and sometimes exact position is the determinant of success or not. Since the launch of the USA made Global Positioning System (GPS) in the late 1970s, global tracking has been available both for military and civilian use. Today, satellite based systems like the American GPS, European Galileo and the Russian GLONASS are the standard for basically any navigation or location application. However these systems are limited by the fact that they must have connection with multiple satellites in order to work. This means that satellite dependent systems are very limited in indoor environments. Despite this, there is no standard for indoor positioning systems (IPSs) even close to the satellite dependent systems when it regards distribution and accessibility for use where satellite dependent systems are limited or not working. However, this new age of connectivity provides a number of options for positioning indoors. There are some systems available, but very few of them provide good enough accuracy. This Master thesis evaluates different options for indoor positioning using technologies that are available in smart devices and smart phones, such as Wi-Fi and Bluetooth, and focuses on indoor positioning systems that can provide high accuracy. The current state of the technologies and the possible future for them, considering rising need and interest in indoor positioning systems are covered in this thesis. A selection of technologies and approaches are explored, tested in conditions designed for this purpose and evaluated to highlight their differences in approach, accuracy and usability. In order to achieve the goals of this thesis, a hybrid method of experimental research design and system development is selected as the main research method. The hybrid method is focused on experimental research, and is used to investigate if the accuracy of the positioning data can be affected and improved by tuning independent variables in an IPS. To be able to do this, an application for smart devices, such as android smartphones, is developed. The application developed is the heart of the conceptual crossover IPS (CCIPS), which is named Locantis, that is being developed and used in the experimental stages of this investigation. It is also used to test the hypothesis that a CCIPS could be a valid contender for replacing the established IPSs. The observations show how the accuracy and precision of the location data is affected by change to independent variables in an IPS and how well a CCIPS can meet real time requirement’s. The main conclusion is that changes to independent variables have greater impact on the precision than the accuracy for location data in an IPS and that a CCIPS in many cases are the sensible choice of IPS.

  • 41.
    Lindskog, Viktor
    Jönköping University, School of Engineering, JTH, Computer and Electrical Engineering.
    Teoretiska och praktiska studier av kodtäckningsverktyg med utvärdering2014Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
  • 42.
    Lovrenovic, Ivan
    Jönköping University, School of Engineering, JTH, Computer and Electrical Engineering.
    UTVECKLING AV GENERELLA LÖSNINGAR – EN FALLSTUDIE PÅ INVENTERINGSSYSTEM2015Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Stocktaking is an exhausting process where employee’s collects data and is something that most companies do, although what they are collecting differs from business to business. Because it is a resource-waste to solve same problem multiple times, without reusing previous solutions, the student have choosen to study an overall solution for a stocktaking system that can be used by multiple businesses.The purpose of this report is to establish the end-user requirements on a stocktaking system and study which technical solutions can be used when developing a stocktaking system.The study used an abductive method with a case study on stocktaking. For the case study the empiricism was collected with interviews. A meta-analysis was implemented for the purpose to seek and analyse relevant literature.The result of the study was a requirement specification for an inventory system based on the forest and stock industry. The result also contains technical solutions that can be applied on the system in order to fulfill the requirements. In parallel with the study an attempt was made to develop a prototype of a stocktaking client togheter with Sweco that met both their requirements and requirements that was obtained from the interviews. The results show that the stocktaking client can manage to create, save and recreate dynamic forms. When forms are created their controls also have the ability to specify restrictions. The client can interpret these restrictions and validate the inputs before saving results. The results of the study also implies that a feasibility study of a system tend to find hidden requirements.The primary limitations of the study were time. If the study had a larger timescope more time could have been spent on collecting empirical data and gather end-user requirements.

  • 43.
    Löfwing, Robin
    Jönköping University, School of Engineering, JTH, Computer and Electrical Engineering.
    Verktyg för berikning av produktdata2013Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Detta examensarbete behandlar utvecklingen av en prototyp ämnad att underlätta hantering av ett företags artiklar vid lanseringen av en e-handel. Prototypens uppgift är att fylla luckan mellan affärssystem och e-handelsplattform (CMS). I prototypen kan användare, med utgång från artikelinformation extraherad från ett företags affärssystem, redigera artiklar, skapa produkter av artiklar och skapa kategorier för produkter. Idén bakom prototypen kommer från att många e-handelsplattformar visar brister vad det gäller artikelhantering. Arbetet utförs på uppdrag, och med stöd, av ett företag som arbetar med att utveckla e-handelslösningar.

    Prototypen tog formen av en webbapplikation utvecklad med hjälp av ASP.NET och programspråket C#. Designskisser på gränssnittet skapades i programmet Balsamiq Mockups. Utifrån designskisserna byggdes gränssnittet upp, i Microsoft Visual Studio, med kontroller utvecklade av företaget DevExpress; de erbjuder en serie ASP.NET kontroller med Ajax-funktionalitet. För att lagra resultatet av de åtgärder som utförs i gränssnittet (redigering av artiklar, produkter och kategorier) skapades en relationsdatabas. Som teknik för databaskommunikation användes LINQ to SQL.

    Under arbetets gång besvarades frågeställningarna ”finns det liknande system som fyller samma funktion som prototypen?” och ”vilka av DevExpress kontroller lämpas sig bäst för att bygga upp gränssnittet?”. Svaret på den första frågan är ja, men inga system vilka helt kan ersätta prototypen. Svaret på den andra frågan användes som underlag vid utveckling av prototypen. Resultatet av utvecklingsarbetet blev en fungerande prototyp som uppfyller tidigare nämnda syfte. Arbetet har lett till att studenten lärt sig nya tekniker och kunnat breddasina kunskaper inom .NET-ramverket

  • 44.
    Lööf, Robert
    Jönköping University, School of Engineering, JTH, Computer and Electrical Engineering.
    Framtagning av Drag&Drop klassbibliotek för WPF-baserat användargränssnitt2012Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    System Andersson AB is a company located in Jönköping that works with developing computer systems for the mechanical engineering industry. As of today, when this report is written, the company is working on the development of a new Manufacturing Planning and Control (MPC) system. This new system aims to create not only a user friendly interface but also a modern, stylish interface. To achieve this, the company has decided to work with a, for them, new application framework; Windows Presentation Foundation (WPF).System Andersson is well known for developing systems for different kinds of touch screens, this project is no exception. For this new user interface the company wishes to implement different types of Drag&Drop functionality. They have not had enough time themselves to study and finish these parts and therefore they have chosen to hand out the task as a thesis project.The first step in the process was to get to know what WPF was and how it works, and especially how it handles Drag&Drop. The goal was to put together some sort of class library and a presentation that together were to give the company a quick guide on how they could implement the functionality into their system.As the framework was new for the company there were also a wish for alternative solutions that demonstrated how the WPF framework could be used to solve the task in as many ways as possible.This report contains a summary of the projects procedure and result. In the report the results are presented and motivated as well as demonstrated in the appendix.

  • 45.
    Manzoor, Saira
    et al.
    Department of Computer Sci, COMSATS Institute of Information Technology Abbottabad. Pakistan.
    Manzoor, Mirfa
    Jönköping University, Jönköping International Business School, JIBS, Informatics.
    Hussain, Walayat
    Faculty of Engineering and IT, University of Technology Sydney, Australia.
    An Analysis of Energy-Efficient Approaches Used for Virtual Machines and Data Centres2017In: 2017 IEEE 14th International Conference on e-Business Engineering (ICEBE), IEEE, 2017, p. 91-96, article id 8119135Conference paper (Refereed)
    Abstract [en]

    For online business markets with a large customer base, the use of market-platforms is leading to a rapid generation of a huge amount of data. Such businesses face challenges to satisfy their users. A quantitative research approach has been used to examine big data in online markets, but there is also a need for qualitative research in this area, so as to understand the relationship between big data, online markets. The present research presents an analysis of the various case study approaches that are employed by researchers in this area. We also analyze trends in case study techniques in this area. The research problem is taken on as a research case for the present study. The results of the study should contribute the implementation of big-data in online markets research.

  • 46.
    Mattsson, Patrik
    et al.
    Jönköping University, School of Engineering, JTH, Civil Engineering.
    Larsson, Benjamin
    Jönköping University, School of Engineering, JTH, Civil Engineering.
    Industriellt Byggande– En Studie av ICT-Verktyg förInnovativ Produktframtagning2014Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
  • 47.
    MBAYEN MBAYEN, GHISLAIN EDGARD
    Jönköping University, School of Engineering, JTH. Research area Information Engineering.
    A Mobile Application Development Strategy-Finding Model2013Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Nowadays there are several different types of ways to build a mobile application, through web technologies, or through mobile manufacturers’ languages. Thus, in this study we focus on the three major mobile application development strategies: Native, Hybrid, and Web to Native. This plurality of solutions renders the selection of a mobile application development strategy complex. Hence, this study aims at understanding how developers deal with the selection of a mobile development approach. This thesis analyses their behaviour thanks to a survey that collects crucial information about developers searching habits. The latter analysis concludes that general guidelines are not sufficient to provide a tailored and accurate selection of mobile application development approach. Therefore, this study aims at improving the activity of finding a mobile application development strategy. In addition to this, the past and current states of the subject are discussed in a critical manner, which therefore results in using an analytical research approach. Knowing the aforementioned, a design science research approach is used to outline the iteration processes that occurred during this study. Each step of the study is thoroughly treated thanks to a tailored design cycle.

    Consequently, a mobile development strategy-finding model has been built by combining literature review and survey’s results. This model highlights the importance of the criteria extracted from the literature review and the survey. To support and allow constant self-evolution of the model, a suggestion of web platform is proposed.

    Finally, this model has been compared with a Titanium model. The result of this comparison outlines that the model created in this study seems more usable because it comprises the three major mobile application development strategies whereas the Titanium model only focuses in native solutions and its own hybrid solution. Moreover, the Titanium model focuses on selling its product rather than showing why it is better than the other mobile application development strategies. 

  • 48.
    Moregård, Jonathan
    et al.
    Jönköping University, School of Engineering, JTH, Computer and Electrical Engineering.
    Kristiansson, Johan
    Jönköping University, School of Engineering, JTH, Computer and Electrical Engineering.
    Att skapa grunden tillkassasystemsapplikationer för Android: Undersökande arbete samtimplementation2013Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    This paper was made together withTechPay AB, by their request.

    The dissertation has been divided into two separate parts; one of which is fully theoretical, with the focus on the security requirements of a digital cash register, and how to meet these requirements.

    The second part covers the implementation of anAndroid-oriented Java-library,created with help from the security requirements found in the first part. The purpose of this library is to make it easier to develop a cash register that uses payment terminals from TechPay.

    This paper also covers different communication protocols, encryption techniques and recommendations from authorities, banks and Android. This paper also contains a small review of how users are validated in applications on the current market that handles money transactions.

  • 49.
    Moscati, Annika
    et al.
    Sapienza University of Rome.
    Lombardo, Julie
    Losciale, Luigi Valentino
    De Luca, Livio
    UMR 3495 (CNRS/MCC) MAP - Modèles et simulations pour l’Architecture et le Patrimoine.
    Visual browsing of semantic descriptions of heritage buildings morphology2011In: Digital Media and its Applications in Cultural Heritage, DMACH, Amman, 16-17 March, 2011., Amman: The Center for the Study of Architecture in the Arab Region , 2011Conference paper (Refereed)
    Abstract [en]

    This contribution focuses on the possibility to link and visualize the relation between a 3D representation of an architectural building and its conceptual description by a graph-based browser interface. For this reason it is used a 3D model and a web application, the Nubes Visum. This platform utilizes a semantic description model that is defined by a semantic level, a structural level and a representation one. To have a new approach at the stored information we added to Nubes Visum another interface that is divided into two parts: the interactive 3D model and an interactive graph. Being a tree structure every node can have children with the same characteristics. This graph allows to establish a privileged link between the 3D representation of buildings and the concepts that describe them in the world of knowledge. The model's hierarchy is expressed by the tree hierarchies of the graph and in the same web page it is possible to choose the graph related to one of the three semantic description levels. By this bilateral relation between information written in the graph and elements describing the object morphology, is possible to perform information searches in two directions: the seek related to the selected entities in the 3D scene and search of entities in the 3D scene trough queries obtained from database.

  • 50.
    Nagibin, Ilya
    et al.
    Jönköping University, School of Engineering, JTH, Computer and Electrical Engineering.
    Valdemarsson, Alexander
    Jönköping University, School of Engineering, JTH, Computer and Electrical Engineering.
    Utveckling av Andersson Qwick Mobil för iOS2013Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    This thesis has been performed for the company System Andersson as a part of the bachelors degree in information technology at the School of Engineering in Jönköping. The thesis is based on the development of an iPhone application.

    System Andersson has an application for Android that is being used for their MPS system (material and production control system). Their customers, however, have also showed interest in being able to use this application for iPhone.

    The students handle the subject of iOS developing, including the design of the application, the use of the development language Objective-C, the use of the scripting language of Json used for server connections and SQL.

    The primary goal with this thesis has been to improve the students knowledge in such subjects as application development for mobile platforms, in such areas as Xcode, which is the development platform that Apple uses and Objective-C, which is the development language being used.

     

    The result of this thesis is an almost fully functional iOS application, similar to the Android application with some functionality missing.

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