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  • 301.
    Song, William Wei
    Dalarna University, School of Technology and Business Studies, Information Systems.
    A Conceptual Framework of Information Analysis and Modelling for E-Health2014In: Smart Health: International Conference, ICSH 2014, Beijing, China, July 10-11, 2014. Proceedings / [ed] Don Harris, Berlin: Springer Berlin/Heidelberg, 2014, Vol. 8549, p. 142-147Conference paper (Refereed)
    Abstract [en]

    E-health (or e-healthcare) aims at applying modern information and telecommunication technologies in the healthcare sector. Recently, more and more research attention has been paid to this area, from clinic data analysis to patient record management. If we say the e-health has been mainly dealing with patient data analysis and various disease diagnosis at its early time, nowadays various data sources, such as social network, physician and patients’ blogs, and various monitoring data (like sensors attached to PD patients at home) are widely used for aid of better disease diagnosis through gathering richer experts’ knowledge and expertise, richer data (from patients, diseases, diagnosis, medical experiments, etc.) for analysis, and quicker (or better timely) access to various resources (e.g. telemedicine) pervasively.

  • 302.
    Song, William Wei
    Dalarna University, School of Technology and Business Studies, Information Systems.
    Gamification and virtual classroom management2015In: ICKET 2015, 2015Conference paper (Refereed)
  • 303.
    Song, William Wei
    et al.
    Dalarna University, School of Technology and Business Studies, Information Systems.
    Chen, B.
    Durham University.
    Tavner, P.
    Durham University.
    Knowledge-based Information Systems: A wind farm case study2011Conference paper (Refereed)
  • 304.
    Song, William Wei
    et al.
    Dalarna University, School of Technology and Business Studies, Information Systems.
    Forsman, Anders
    Dalarna University, School of Technology and Business Studies, Information Systems.
    Building a Learning Architecture: e-Learning and e-Services2012In: NGL 2012 NEXT GENERATION LEARNING CONFERENCE, February 21–23, 2012, Falun, Sweden: Conference Proceedings, Falun: Högskolan Dalarna , 2012, p. 137-148Conference paper (Other academic)
    Abstract [en]

    With the rapid advancement of the webtechnology, more and more educationalresources, including software applications forteaching/learning methods, are available acrossthe web, which enables learners to access thelearning materials and use various ways oflearning at any time and any place. Moreover,various web-based teaching/learning approacheshave been developed during the last decade toenhance the capability of both educators andlearners. Particularly, researchers from bothcomputer science and education are workingtogether, collaboratively focusing ondevelopment of pedagogically enablingtechnologies which are believed to improve theinfrastructure of education systems andprocesses, including curriculum developmentmodels, teaching/learning methods, managementof educational resources, systematic organizationof communication and dissemination ofknowledge and skills required by and adapted tousers. Despite of its fast development, however,there are still great gaps between learningintentions, organization of supporting resources,management of educational structures,knowledge points to be learned and interknowledgepoint relationships such as prerequisites,assessment of learning outcomes, andtechnical and pedagogic approaches. Moreconcretely, the issues have been widelyaddressed in literature include a) availability andusefulness of resources, b) smooth integration ofvarious resources and their presentation, c)learners’ requirements and supposed learningoutcomes, d) automation of learning process interms of its schedule and interaction, and e)customization of the resources and agilemanagement of the learning services for deliveryas well as necessary human interferences.Considering these problems and bearing in mindthe advanced web technology of which weshould make full use, in this report we willaddress the following two aspects of systematicarchitecture of learning/teaching systems: 1)learning objects – a semantic description andorganization of learning resources using the webservice models and methods, and 2) learningservices discovery and learning goals match foreducational coordination and learning serviceplanning.

  • 305.
    Song, William Wei
    et al.
    Dalarna University, School of Technology and Business Studies, Information Systems.
    Forsman, Anders
    Dalarna University, School of Technology and Business Studies, Information Systems.
    Yan, Jia
    Dalarna University, School of Humanities and Media Studies, Chinese.
    An e-Curriculum Based Systematic Resource Integration Approach to Web-Based Education2014In: International Journal of Information and Education Technology, ISSN 2010-3689, ISSN 2010-3689, Vol. 5, no 7, p. 495-501Article in journal (Refereed)
    Abstract [en]

    With the rapid advancement of the web technology, more and more educational resources, including software applications for teaching/learning methods, are available across the web, which enables learners to access the learning materials and use various ways of learning at any time and any place. Researchers from both computer science and education are working together, collaboratively focusing on development of pedagogically enabling technologies which are believed to improve the infrastructure of education systems and processes, including curriculum development models, teaching/learning methods, management of educational resources, systematic organization of communication and dissemination of knowledge and skills required by and adapted to users. In this paper we address the following two aspects of systematic integration architecture of educational systems: 1) learning objects – a semantic description and organization of learning resources using the web service models and methods, and 2) learning services discovery and learning goals match for educational coordination and learning service planning.

  • 306.
    Song, William Wei
    et al.
    Dalarna University, School of Technology and Business Studies, Information Systems.
    Lin, Chenlu
    Avdic, Anders
    Dalarna University, School of Technology and Business Studies, Information Systems.
    Forsman, Anders
    Dalarna University, School of Technology and Business Studies, Information Systems.
    Åkerblom, Leif
    Dalarna University, School of Technology and Business Studies, Information Systems.
    Collaborative Filtering with Data Classification: A Combined Approach to Hotel Recommendation Systems2016In: 25th International Conference on Information Systems Development (ISD2016 Poland), 2016Conference paper (Refereed)
    Abstract [en]

    Recommendation systems aim to help users make decisions more efficiently. The most widely used method in recommendation systems is collaborative filtering, of which, a critical step is to analyze a user's preferences and make recommendations of products or services based on similarity analysis with other users' ratings. However, collaborative filtering is less usable for recommendation facing the "cold start" problem, i.e. few comments being given to products or services. To tackle this problem, we propose an improved method that combines collaborative filtering and data classification. We use hotel recommendation data to test the proposed method. The accuracy of the recommendation is determined by the rankings. Evaluations regarding the accuracies of Top-3 and Top-10 recommendation lists using the 10-fold cross-validation method and ROC curves are conducted. The results show that the Top-3 hotel recommendation list proposed by the combined method has the superiority of the recommendation performance than the Top-10 list under the cold start condition in most of the times.

  • 307.
    Song, William Wei
    et al.
    Dalarna University, School of Technology and Business Studies, Information Systems.
    Lin, Chenlu
    Forsman, Anders
    Dalarna University, School of Technology and Business Studies, Information Systems.
    Avdic, Anders
    Dalarna University, School of Technology and Business Studies, Information Systems.
    Åkerblom, Leif
    Dalarna University, School of Technology and Business Studies, Information Systems.
    An Euclidean similarity measurement approach for hotel rating data analysis2017In: Proceedings 2017 2nd IEEE International Conference on Cloud Computing and Big Data Analysis, ICCCBDA 2017, 2017, p. 293-298Conference paper (Refereed)
    Abstract [en]

    The most widely used method in recommendation systems is collaborative filtering, of which, a critical step is to analyze a user's preferences and make recommendations of products or services based on similarity analysis with other users' ratings. However, collaborative filtering is less usable for recommendation facing the 'cold start' problem, i.e. few comments being given to products or services. To tackle this problem, we propose an improved method that combines collaborative filtering and data classification. We use hotel recommendation data to test the proposed method. The accuracy of the recommendation is determined by the rankings. Evaluations regarding the accuracies of Top-3 and Top-10 recommendation lists using the 10-fold cross-validation method and ROC curves are conducted. The results show that the Top-3 hotel recommendation list proposed by the combined method has the superiority of the recommendation performance than the Top-10 list under the cold start condition in most of the times.

  • 308.
    Song, William Wei
    et al.
    Dalarna University, School of Technology and Business Studies, Information Systems.
    Sarkheyli, Azadeh
    Dalarna University, School of Technology and Business Studies, Information Systems.
    Development of Dynamic Intelligent Risk Management Approach2018In: Proceedings of International Conference on Computational Intelligence and Applications, 2018Conference paper (Refereed)
  • 309.
    Song, William Wei
    et al.
    Dalarna University, School of Technology and Business Studies, Information Systems.
    Soomro, Aijaz
    Durham University.
    Li, Yang
    British Telecom.
    Liu, Qin
    Tongji University.
    A structural analysis of SLAs and dependencies using conceptual modelling approach2013In: Proceedings of the international conference COMPSAC 2013-Workshop on Service Sciences & Systems (SSS), IEEE CS Press , 2013, p. 439-444Conference paper (Refereed)
    Abstract [en]

    Making good use of Service Level Agreements (SLA) becomes crucial for an enterprise both to provide value added products and services to customers and to protect the interest of parties involved in the business activities. Well formed and effective structural representation and management of SLAs in conceptual modeling can greatly support the understanding and communication of service development and deployment as well as maintenance of quality of service. Existing specifications and structures for SLAs do not fully formalize and support for different automatic and dynamic behavioral aspects needed within business enterprises due to lack of study focusing on SLAs templates and their contents, which are mostly written on Natural Language (NL). We address the issues of how to use conceptual models to describe the structures of SLAs and the various relationships between SLAs and their items, and hence to better depict business domains. With focus on the contents, process, and dependencies among SLAs, we aim to use so generated concept model for service discovery, service delivery and scheduling.

  • 310.
    Song, William Wei
    et al.
    Dalarna University, School of Technology and Business Studies, Information Systems.
    Wan, Benting
    Jiang Xi University of Finance and Economics.
    Path Planning Strategy of Mobile Nodes Based on Improved RRT Algorithm2018In: Proceedings of International Conference on Computational Intellligence and Applications, 2018Conference paper (Refereed)
  • 311.
    Song, William Wei
    et al.
    Dalarna University, School of Technology and Business Studies, Information Systems.
    Wu, Qinzhu
    Forsman, Anders
    Dalarna University, School of Technology and Business Studies, Information Systems.
    Yu, Zukun
    Zhejiang University.
    A computational model for trust-based collaborative filtering: an empirical study of hotel recommendations2013In: Web Information Systems Engineering - WISE 2013: 14th International Conference, Nanjing, China, October 13-15, 2013, Proceedings, Part II / [ed] Lin, X., Manolopoulos, Y., Srivastava, D., Huang, G., 2013, Vol. 8182, p. 266-279Conference paper (Refereed)
    Abstract [en]

    The inherent weakness of the data on user ratings collected from the web, such as sparsity and cold-start, has limited the data analysis capability and prediction accuracy. To alleviate this problem, trust is incorporated in the CF approaches with encouraging experimental results. In this paper, we propose a computational model for trust-based CF with a method to generate and propagate trust in a social network. We apply this method to measure trusts on users’ ratings of hotels and show its feasibility by comparing the testing results with the traditional CF methods, e.g. Mean Absolute Error.

  • 312.
    Song, William Wei
    et al.
    Dalarna University, School of Technology and Business Studies, Information Systems.
    Zhang, Shaozhong
    Zhejiang Wanli University.
    Ding, Minjie
    Zhejiang Wanli University.
    A combined prediction model of container volume based on residual correction2016Conference paper (Refereed)
    Abstract [en]

    Semantic analysis is an important part of natural language processing, and it has a broadly application in the network information processing. This paper presents a semantic analysis framework based on the directed weighted graph. The paper uses a directed weighted graph for semantic classification. The methodology takes the information semantic analysis as the goal in network-oriented approach, particularly in E-commerce user reviews. It looks the formal semantics lexical as semantic body and denoted by nodes. It uses links to represent relationship between the nodes and calculated by weights. Directed links are used to connect to each other in nodes, which semantic vocabulary is interrelated between nodes. Then a directed weighted graph is constructed by semantic nodes and their interrelationships relations. The experimental results and analysis show that the proposed method in the paper can classify the semantics into different classification according to the path length threshold requirement.

  • 313.
    Song, William Wei
    et al.
    Dalarna University, School of Technology and Business Studies, Information Systems.
    Zhang, Sheng
    Nanchang Hangkong University.
    Tan, Pengliu
    Nanchang Hangkong University.
    Bao, Xiaoling
    Nanchang Hangkong University.
    Liu, Xiaodong
    Nanchang Hangkong University.
    Community-based message opportunistic transmission2016In: Transforming Healthcare Through Information Systems: Proceedings of the 24th International Conference on Information Systems Development, 2016, Vol. 17, p. 79-93Conference paper (Refereed)
    Abstract [en]

    Mobile Social Networks (MSNs) is a kind of opportunistic networks, which is composed of a large number of mobile nodes with social characteristic. Up to now, the prevalent communitybased routing algorithms mostly select the most optimal social characteristic node to forward messages. But they almost don't consider the effect of community distribution on mobile nodes and the time-varying characteristic of network. These algorithms usually result in high consumption of network resources and low successful delivery ratio if they are used directly in mobile social networks. We build a time-varying community-based network model, and propose a community-aware message opportunistic transmission algorithm (CMOT) in this paper. For inter-community messages transmission, the CMOT chooses an optimal community path by comparing the community transmission probability. For intra-community in local community, messages are forwarded according to the encounter probability between nodes. The simulation results show that the CMOT improves the message successful delivery ratio and reduces network overhead obviously, compared with classical routing algorithms, such as PRoPHET, MaxProp, Spray and Wait, and CMTS.

  • 314.
    Song, William Wei
    et al.
    Dalarna University, School of Technology and Business Studies, Information Systems.
    Zou, Luyi
    LDA-TM: A two-step approach to twitter topic data clustering2016In: Proceedings of the 2016 IEEE International Conference on Cloud Computing and Big Data Analysis, IEEE conference proceedings, 2016, p. 342-347Conference paper (Refereed)
    Abstract [en]

    The Twitter System is the biggest social network in the world, and everyday millions of tweets are posted and talked about, expressing various views and opinions. A large variety of research activities have been conducted to study how the opinions can be clustered and analyzed, so that some tendencies can be uncovered. Due to the inherent weaknesses of the tweets - very short texts and very informal styles of writing - it is rather hard to make an investigation of tweet data analysis giving results with good performance and accuracy. In this paper, we intend to attack the problem from another aspect - using a two-layer structure to analyze the twitter data: LDA with topic map modelling. The experimental results demonstrate that this approach shows a progress in twitter data analysis. However, more experiments with this method are expected in order to ensure that the accurate analytic results can be maintained.

  • 315.
    Soomro, A.
    et al.
    Durham University.
    Song, William Wei
    Dalarna University, School of Technology and Business Studies, Information Systems.
    Developing and Managing SLAs for Business Applications in Information Systems2012In: Communications in Computer and Information Science: Emerging Trends and Applications in Information Communication Technologies, Springer Berlin/Heidelberg, 2012, p. 489-500Chapter in book (Refereed)
    Abstract [en]

    Use of Service Level Agreements (SLAs) is crucial for a business organization to provide the value added goods and services to customers to achieve the business goals successfully. Efficient structural representation and management of SLAs can solve the problems of quality of service evaluation during service development and deployment. Existing specifications and structures for SLAs do not fully formalize and support for different automatic and dynamic behavioural aspects needed within the Business Organizations for SLAs. We address the issues on how to formalize and document the structures of SLAs for better utilization and improved results in various business domains. Our main focus is on the contents and processes of SLAs during service discovery, service delivery and scheduling of the services effectively and efficiently.

  • 316.
    Stagnebo, Pernilla
    Dalarna University, School of Technology and Business Studies, Information Systems.
    Reklam på sociala medier – personlig eller integritetskränkande?: En studie om användares syn på individ anpassad reklam2018Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Today many companies focus their advertising on social media. Based on the

    users behaviour they can design individual advertisement for the user. There are 2.2

    billion active users on Facebook world wide which makes it a gratefull place for

    advertisement. Facebook have the right to collect data about you and your behavior on the

    website and on other websites connecting with Facebook. As a Facebook user you have

    accepted these terms of service. You get more interesting advertisement in your

    Facebook-feed but it might also make you feel that ”big brother is watching you”.

    The purpose of this study is to describe how comfortable users in social media are with

    organisations collecting data to make individualized advertisement. A questionnaire was

    sent to 100 Facebook users including eight different scenarios on data collecting. The

    respondents answered how comfortable they were with each scenario. Results showed that

    the majority of the respondents where uncomfortable with all scenarios. The most

    uncomfortable scenario would be if a cellphone eavesdropped into a private conversation

    and then showed an ad about the product the people were talking about. Another sensitive

    subject was collecting data for individual advertisement from political parties. Some

    respondents also thought that there were too much advertisement on Facebook. However,

    the majority of the respondents said no to the idea of paying for Facebook in order to

    avoid advertisement.

    Finally, it was argued that the respondents wasn’t sure on what type of data Facebook

    were collecting. The answer can be found in the terms of service. A discussion about a

    simplification on user agreements were made.

  • 317.
    Stenberg, Maria
    Dalarna University, School of Technology and Business Studies, Information Systems.
    Testverktyg för prestandamätningar av feta klienter: - En fallstudie med fokus på identifiering av testverktyg och beskrivning av viktiga kriterier för dessa2017Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The aim of this study is to describe performance testing on thick clients, sometimes also referred to as desktop applications. Another aim with this study is to map out a selection of testing tools that can be used for performance testing of thick clients and to identify what qualities that is considered to be important criteria for these testing tools. The study is based on the research strategy called case study where the case is grounded the needs from Trafikverket but the results from this study could be applied on other business organizations that works with testing.

    Both qualitative and quantitative data collecting methods where used in this study, in the form och interviews, document studies and questionnaires. Since the collected data in the study where in both qualitative and quantitative form the use of a mix between a qualitative thematical data analysis and a quantitative data analysis had to be done. A part of the analysis was an evaluation on a selection of testing tools towards a compiled list of criteria, as an evaluation method based on criteria.

    The course of action for choosing and evaluation a testing tool that has been applied throughout the study is based on preexisting theories that has been found through reviews of literature. The reviews of literature have also been the ground for defining the central concepts of the study and contributes to the result by comparing what’s been found in literature to the collected data.

    The result of the study contributes with a basis for decision for companies and organizations that is in the process of getting a testing tool for performance testing thick clients och how to evaluate these before obtaining the testing tool licenses. The study also contributes with a characterization of performance testing thick clients.

    In this particular case, the most suitable testing tools came to be HP LoadRunner and also two testing tools from eggPlant combined (eggPlant Functional and eggPlant Performance).

  • 318. Stenmark, D.
    et al.
    Lindgren, Rikard
    Dalarna University, School of Technology and Business Studies, Information Systems.
    Henfridsson, OLa
    System Support for Knowledge Work: Bridging the Knowing-Doing Gap2006In: International Journal of Knowledge Management, ISSN 1548-0666, E-ISSN 1548-0658, Vol. 2, no 2, p. 46-68Article in journal (Refereed)
    Abstract [en]

    Many researchers argue that information systems (IS) can play an important role in supporting organizational knowledge application. However, recent IS research indicates that knowledge management systems (KMS) often fail when implemented in the knowledge work practice of contemporary organizations. While KMS maintenance has been recognized as an important IS research area, imbalance between the desire for accurate content and the workload required to achieve this still appears to be a critical issue, resulting in systems of little use for organizations in their knowledge application processes. Driven by the ambition to contribute recommendations for how to integrate KMS with everyday knowledge work, we use general lessons learned from development of groupware applications as a theoretical lens to analyze empirical experiences from three implemented and evaluated KMS. Targeting the KMS maintenance challenge, our recommendations extend earlier IS research on the implementation and use of knowledge work support systems. On a practical level, our recommendations assist KMS developers in attempts to bridge the knowing-doing gap in organizations where individual members do not know or know of each other and the organization as a whole does not know what it knows.

  • 319. Strand, Cecilia
    et al.
    Hatakka, Mathias
    Dalarna University, School of Technology and Business Studies, Information Systems.
    Mobile phones as a citizen-controlled anti-corruption tool in East Africa: a literature review2017In: Information and Communication Technologies for Development: 14th IFIP WG 9.4 International Conference on Social Implications of Computers in Developing Countries, ICT4D 2017 Yogyakarta, Indonesia, May 22–24, 2017, Proceedings / [ed] Jyoti Choudrie, M. Sirajul Islam, Fathul Wahid, Julian M. Bass, Johanes Eka Priyatma, Springer, 2017, p. 753-764Conference paper (Refereed)
    Abstract [en]

    Despite agreement amongst donors, business and political leaders concerning the negative effects of corruption, levels have not fallen in East Africa. The continued high levels of corruption, reassert the need for a better understanding if mobile phones, if prolific enough, can be an effective tool against corruption. Through a literature review of ten years M4D and ICT4D research on mobiles as a citizens-controlled tool for (a) accessing government information either directly or through citizens’ crowd-sourcing of information and (b) mobilization to demand greater government transparency, as well as,(c) instantaneous reporting of corruption in East Africa; this study attempts to gauge the status of this research field. The review included the ten highest ranking open access ICT4D journals, and six journals from parent disciplines;information system and development studies, as well as conference proceedings from the M4D conferences, and the SIG Globdev Workshops. The review concludes that earlier optimism around mobiles’ potential to support citizens’ counter-corruption actions, has not resulted in a significant body of research. Nor does the literature provide any substantive clues as to why this urgent topich as not been explored more fully.

  • 320.
    Sundgren, Bo
    Dalarna University, School of Technology and Business Studies, Information Systems.
    Business models and authors' rights in the information economy2010In: International Journal of Public Information Systems, ISSN 1653-4360, Vol. 2010, no 2, p. 171-194Article in journal (Refereed)
    Abstract [en]

    This paper will discuss some special features of the information economy. The information economy is based on information products and services, whereas the traditional economy is based on farming, industrial production of material goods, and labour-intensive services. The information economy is sometimes claimed to be a completely new economy, governed by other economic laws than the traditional economy. This is not true. However, there are some cost parameters that have changed drastically in the information economy. For example, the Internet has lowered the marginal cost for reproduction and distribution of information products to almost zero. This makes it difficult for producers of information products to combine an attractive price for the products, while recovering high development costs. Some companies, e.g. Google, have successfully introduced new business models adapted to the new needs. Many other companies in the information economy, e.g. media companies and publishers, still need to innovate and improve their business models. There are also needs for changes and innovations in legislation, especially in the field of copyright and authors’ rights, where the damaging effects to society of the monopoly powers granted by the existing laws have become apparent. New legislation should focus more on the needs of authors and customers, and less on the wishes of business-people involved in the processes between the authors and the customers. Open access and open source are two interesting new concepts and business models for intellectual products (scientific papers and software, respectively), which seem to have great potentials for the future development of the information economy.

  • 321.
    Sundgren, Bo
    Dalarna University, School of Technology and Business Studies, Information Systems.
    Citizen-centric access to statistics2010Other (Other academic)
  • 322.
    Sundgren, Bo
    Dalarna University, School of Technology and Business Studies, Information Systems.
    Designing surveys and statistical systems: complex decision processes2010Conference paper (Other academic)
  • 323.
    Sundgren, Bo
    Dalarna University, School of Technology and Business Studies, Information Systems. Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Enterprise Architectures: Purposes, definitions, scope, and methods2012Conference paper (Refereed)
  • 324.
    Sundgren, Bo
    Dalarna University, School of Technology and Business Studies, Information Systems.
    eSamhället - evolution eller revolution?2010Conference paper (Other academic)
  • 325.
    Sundgren, Bo
    Dalarna University, School of Technology and Business Studies, Information Systems.
    Statistical databases: an introduction2010Book (Other academic)
  • 326.
    Sundgren, Bo
    Dalarna University, School of Technology and Business Studies, Information Systems.
    Statistical file systems and archive statistics2010Conference paper (Refereed)
  • 327.
    Sundgren, Bo
    Dalarna University, School of Technology and Business Studies, Information Systems.
    The Systems Approach to Official Statistics2010In: Official Statistics – Methodology and Applications in Honour of Daniel Thorburn, Stockholm, Sweden: Stockholm University , 2010, p. 225-260Chapter in book (Other academic)
  • 328.
    Sundin, Emil
    Dalarna University, School of Technology and Business Studies, Information Systems.
    Perception and effects of implementing Kotlin in existing projects: A case study about language adoption2018Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The Kotlin programming language has seen an increase of adoption since its launch in 2011. In late 2017 Google announced first-class support for Kotlin on the Android platform which further popularized the language. With this increase in popularity we felt it was interesting to investigate how Kotlin affects the developer experience. We performed a case study to see how Java developers perceive the Kotlin language, and how it meets the requirements of these developers. To gather the developer requirements and their perception of Kotlin we performed two sets of interviews and rewrote parts of their codebase. The first set of interviews identified developer requirements and the second set of interviews showcased the Kotlin language and its potential use in their codebase. The results show that Kotlin can meet most of the developer requirements and that the perception of Kotlin is positive. Kotlin’s ability to be incrementally adopted was a prominent feature which reduced the inherent risks of technology adoption while providing them the ability to further evaluate the language. The expressiveness of a programming language has previously been found to be a prominent factor of language adoption. In this study, we identified the expressive nature of Kotlin as a major factor of its adoption potential.

  • 329.
    Suralta, Mae Laurene
    Dalarna University, School of Technology and Business Studies, Information Systems.
    Licenshantering av programvaror i enkommunal verksamhet: En fallstudie över licenshanteringen i Falu kommun2015Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Research shows that changes in information technology and the increasing cost of new software have led to the underlying problems that affect heterogeneous software license environments and large organizations. This underlying problem in its large context is about software management. Software license management is just a small branch of this underlying problem. Large organizations like municipalities are affected by this underlying problem because of the complexity of the organization's environment. Applying changes in the area of software licensing is impossible to do without making changes to the entire organizational process that comes with it.This case study is a new extensive area surrounding the subject on license management of software, which can be very informative and good experience to share. The thesis describes how a municipal’s license management activity looks and the problems that exist with the current software license management process.Research preparations, review of literature and data generating methods; interviews, documents and observations are used to study the case object in-depth. The goal is to list the existing problems, analyze them and give recommendations for applicable solutions the case study object, IT-office in the municipality of Falun, can use.A recommendation for a clear license management process model is considered as a good academic contribution because the problem of software license management is a general problem. The thesis result is a process model about software license management for organizations with IT-service customers. This generic solution could be used by other municipalities and similar organizations.

  • 330.
    Swärd, Ola
    et al.
    Dalarna University, School of Technology and Business Studies, Information Systems.
    W Krogars, Anton
    Dalarna University, School of Technology and Business Studies, Information Systems.
    Att skapa sammanhållning via ett systemutvecklingsprojekt: med inspiration av idrottspsykologi2014Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    This thesis has been implemented by two students at Högskolan Dalarna in cooperation withIstone Concrevi, who is a IT-consultant company in Borlänge. Edsbyverken, a client of Istoneand a furniture manufacturer based in Edsbyn, needs to increase their supply reliability. Thecompany also feels that there is a lack of cohesion between the administrative and themanufacturing parts of the business. Edsbynverken hope that greater cohesion will becontributing to a better supply reliability. Cohesion is a term that is commonly used in sports andteams and is often associated with success in the sport.The research strategy used in this study is design and creation that focuses on creating new ITproducts, artifacts. This study has resulted in an artifact of the type instantiation, which is anapplication developed using a user-centric and agile working. The purpose of the study is toexamine and test if theories from sport psychology can be used within a systems developmentproject with the purpose to get the artifact and the development process to promote the cohesionwithin the business.Data collection methods used in the study are interviews and questionnaires. The interviewswere used to collect background information from the business and wishes about the application.Surveys were used for feedback on the application, as well as to evaluate the systemsdevelopment and the applications impact on the cohesion within the business.The results from the data collection are often sprawling, ranging from very positive signs tonegative. From indications of that the cohesion has improved to statements that it hasn’t. Inappraisal, however, one can see a tendency that this research failed to improve cohesion. Thougha certain percentage of employees at Edsbyverken believe that cohesion may increase in the longterm. The conclusion about sports psychology is that it, when connected to systemsdevelopment, has a limited use and that many of the theories that exist on cohesion within sportspsychology not are useful or appropriate in systems development work.

  • 331.
    Söderlund, Alexandra
    et al.
    Dalarna University, School of Technology and Business Studies, Information Systems.
    Bergkvist, Petra
    Dalarna University, School of Technology and Business Studies, Information Systems.
    Analys av en integrering med Big Data i en vidareutveckling av en mobil‐ och webbapplikation inom väginformatik.2014Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Municipalities are responsible for developing policies and security programs to prevent accidents from occurring where transports of dangerous goods are involved. A mapping of transports with dangerous goods are therefore of interest. A mobile and web application has been developed to carry out a mapping in real time. The mobile application will log positions while driving and alert the user when he is about to enter an area where restrictions for dangerous goods prevails. The applications are not fully developed due to the areas that represent roads with limitations are not based on relevant information. The National Road database (NVDB) is a detailed database and contains all the roads in Sweden and the rules that apply for these. Providing the applications with information from NVDB would solve the problem with areas being represented by irrelevant information. But a documented description of how the process would be done for integrating applications with NVDB was not found. The purpose of the report was therefore to describe the integration between information from NVDB and a mobile information system. To achieve this, three things was identified, relevant information from NVDB, the steps needed for the integration and limitations/opportunities. The theory for the report consisted of studying the subject of Big Data, Geographical Information and maps and also Intelligent Transport Systems among others. This led to an understanding that formed the basis for the empirical studies. They were based on document studies on the mobile and web application, an extract of information from NVDB and the Google Maps API. The theoretical and empirical frame of reference was the basis for the development choices made to achieve the purpose. The development process was divided and described in five essential steps. These steps are conversion between reference and management of the GPS position among others. The results of this work showed that when handling NVDB Big Data characters in terms of volume and variety can be identified and influence both the development and the applications.

  • 332.
    Taysun, Necirvan
    et al.
    Dalarna University, School of Technology and Business Studies, Information Systems.
    Vennberg, Tony
    Dalarna University, School of Technology and Business Studies, Information Systems.
    Öppen källkod GIS-ramverk för mobil fältinmätning offline: Analys av lämpliga GIS-ramverk för skogsindustrin2018Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Today, there’s no effective way for field data collection and its associated map objects when planning construction of new roads. The forest industry wishes to be able to do this with a mobile device with or without an internet connection, with the help of an open-source geographical information system-framework. We have therefore conducted a case study. We needed to know what the requirements were. The requirements needed was forwarded during an interview with one person from our partner organization that had contact with a forest company.

    We identified eight frameworks, whereas five were left after the screening. The screening was done by discarding the frameworks that didn’t fulfill the main requirements that we got from the interview. The five remaining frameworks were analyzed by identifying the pros and cons that were based on how well the frameworks fulfilled the evaluation criterias. The evaluation criterias were based on the requirements we got from the interview as well as the additional criterias that we considered important when working with open-source frameworks. E.g. the quality of the documentation, when the framework was last updated, the eventual cost etc.

    The framework we finally recommended was “Mapbox”. This framework did not have the highest coverage of requirements. However we decided that it was the most well-suited choice based on the open-source criteria’s we put forward.

  • 333.
    Thapa, Devinder
    et al.
    University of Agder.
    Hatakka, Mathias
    Dalarna University, School of Technology and Business Studies, Information Systems.
    Understanding ICT in ICT4D: An Affordance Perspective2017In: Proceedings of the 50th Hawaii International Conference on System Sciences (HICSS), 2017Conference paper (Refereed)
    Abstract [en]

    Understanding the role of ICT for development is at the core of ICT4D research. However, prevailing research in this field most often focuses on access or readiness of a technology, or on the outcomes of the technology use. Less attention has been paid to understand the mechanism of the technology use that leads to the outcomes. The question of why ICT in a development context sometimes work and sometimes does not work still remains a subject of enquiry. To enhance our understanding in this regard, we propose to use the concept of affordances to unfold the “black boxed” nature of ICT. We revisited a case from Kenya to illustrate the application of affordances in a ICT4D context. The findings show that the benefits of ICT can be harnessed only if the users in the underprivileged communities can perceive and actualize the affordances of the ICT. However, what is ICT affordances, and how people perceive and actualize the affordances in the context of developing countries are the issues that we delve in this paper

  • 334.
    Tirus, Nicklas
    Dalarna University, School of Technology and Business Studies, Information Systems.
    En jämförelse mellan två öppna ramverk för objektigenkänning: En undersökning gällande noggrannhet och tidsåtgång vidträning och test2018Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The research in this thesis is conducted with the partners aim to construct a new train detection system that uses image recognition and artificial intelligence. Detectors like these that exists today are expensive, so the construction is going to be based around the use of consumer electronics to lower the cost and simplify installation and maintenance. Several frameworks for object detection are available, but they use different approaches and methods. This thesis is therefore carried out as a case study that compares two widely used frameworks for image recognition tasks. The purpose is to identify advantages and disadvantages regarding training and testing when using these frameworks. Also highlighted is different challenges encountered in the process. The summary of the results is used to form ideas and a discussion about how to implement a framework in the new detection system. The frameworks compared in this study are OpenCV and Google TensorFlow. These frameworks use different methods for object detection, mainly cascade classifiers and convolutional neural nets. The frameworks were tested using a dataset of 400 images on different trains where the wheel-axles were used as the object of interest. The results were analyzed based on criteria regarding precision, total training time and also complexity regarding configuration and usage. The results showed that OpenCV had a faster training process but had low precision and more complex configuration. TensorFlow had a much longer training process but had better precision and less complex configuration. The conclusion of the study is that TensorFlow overall showed the best result and has a better potential for implementation in the new detection system. This is based on the results from the study, but also that the framework is developed with a more modern approach using convolutional neural nets for bject detection.

  • 335.
    Vesmes, Henrik
    et al.
    Dalarna University, School of Technology and Business Studies, Information Systems.
    Åhman, Christina
    Dalarna University, School of Technology and Business Studies, Information Systems.
    Systemutveckling med ett eTjänsteperspektiv: en eTjänstemetod för utveckling av kundfokuserade eTjänster2009Independent thesis Basic level (degree of Bachelor)Student thesis
    Abstract [sv]

    Göran Hultgren är författaren till eTjänster som social interaktion via användning av IT-system (2007), vilken är en praktisk teori som syftar till att vara till hjälp vid analyser av eTjänster. Eftersom Hultgrens avhandling går ut på att analysera befintliga eTjänster saknas det riktlinjer för hur teorin kan tillämpas praktiskt under utvecklingen av nya eTjänster. Syftet med denna uppsats är att ta fram en systemutvecklingsmetod utifrån den praktiska eTjänsteteorin. eTjänstemetoden som vi tagit fram är baserad på en litteraturstudie av Hultgrens avhandling. Metoden består av ett antal steg som man kan följa vid utvecklingen av en eTjänsten. Den skall inte ses som en fullständig systemutvecklingsmetod utan skall fungera snarare som en kompletteringsmetod som syftar till att ett eTjänsteperspektiv behålls under hela utvecklingen. Vi hade som uppdrag av SkiBar System AB att utveckla ett community där vi kunde testa vår eTjänstemetod under utvecklingen. Metoden visade sig vara ett bra sätt att behålla ett eTjänsteperspektiv, det vill säga att alla communitys tjänster syftade till att höja värdet för kunden.

  • 336.
    Viberg, Olga
    Dalarna University, School of Technology and Business Studies, Information Systems. Örebro universitet.
    Design and use of mobile technology in distance language education: Matching learning practices with technologies-in-practice2015Doctoral thesis, comprehensive summary (Other academic)
    Abstract [en]

    This thesis focuses on the adaptation of formal education to people’s technology- use patterns, theirtechnology-in-practice, where the ubiquitous use of mobile technologies is central. The research question is: How can language learning practices occuring in informal learning environments be effectively integrated with formal education through the use of mobile technology? The study investigates the technical, pedagogical, social and cultural challenges involved in a design science approach.

    The thesis consists of four studies. The first study systematises MALL (mobile-assisted language learning) research. The second investigates Swedish and Chinese students’ attitudes towards the use of mobile technology in education. The third examines students’ use of technology in an online language course, with a specific focus on their learning practices in informal learning contexts and their understanding of how this use guides their learning. Based on the findings, a specifically designed MALL application was built and used in two courses. Study four analyses the app use in terms of students’ perceived level of self-regulation and structuration.

    The studies show that technology itself plays a very important role in reshaping peoples’ attitudes and that new learning methods are coconstructed in a sociotechnical system. Technology’s influence on student practices is equally strong across borders. Students’ established technologies-in-practice guide the ways they approach learning. Hence, designing effective online distance education involves three interrelated elements: technology, information, and social arrangements. This thesis contributes to mobile learning research by offering empirically and theoretically grounded insights that shift the focus from technology design to design of information systems.

  • 337.
    Viberg, Olga
    Dalarna University, School of Technology and Business Studies, Information Systems.
    Design Guidelines and Cross-Platform Mobile Application Development for Beginner Language Learners2014Conference paper (Refereed)
    Abstract [en]

    Mobile technology, as most of the other previously created IT artifacts, is not primarily an educational phenomenon; it is rather a social phenomenon that occurs in different parts of the world and in different ways. By using mobile technology individuals blur boundaries between their formal and informal learning environments, especially in regard to distance/online education, where both formal and informal learning often coexist in practice. Nonetheless, widespread use of new technology at large does not routinely lead to effectiveness in education (Levy, 2009). Effective use primarily depends on the specific employed affordances of technology, which have to fit into the target educational/learning environment and students’ use contexts and learning practices. Presently mobile technology is engaged to support various learning practices, but sound guidelines and examples of how to design effective mobile learning information systems are however lacking. The present poster introduces a prototype of a cross-platform language learning application developed for beginner second and foreign language students. The development of such prototype is based on the structurational analysis about design requirements for mobile language learning applications for second language students in online/distance higher educational settings. Accordingly to create a deeper understanding of the proposed prototype the design implications are likewise presented.

  • 338.
    Viberg, Olga
    Dalarna University, School of Technology and Business Studies, Information Systems.
    Use of Modern Learning Technologies in Enhancing Net-Based Language Learning at Beginners' Level2011Conference paper (Refereed)
  • 339.
    Viberg, Olga
    Dalarna University, School of Technology and Business Studies, Information Systems.
    Utvärdering av genomförda projekt inom Nästa Generations Lärande-programmet2016Report (Other academic)
  • 340.
    Viberg, Olga
    et al.
    Dalarna University, School of Technology and Business Studies, Information Systems.
    Berg, Lovisa
    Dalarna University, School of Humanities and Media Studies, Arabic.
    Students' perspectives on the use of technology in Online International Collaborative Learning Environment: A case from Sweden and Somaliland2016Conference paper (Refereed)
    Abstract [en]

    The presentation focuses on students’ understanding of collaborative, technology-mediated learning practices. It is based on a case study, conducted in cooperation between one university in Sweden and two in Somaliland. The structurational analysis is applied to interview and survey data from 24 students. The results show that language competence and functional technology are vital for success and that with these prerequisite met the students’ learning practices have switched from individual practices towards more collaborative ones.

     

  • 341.
    Viberg, Olga
    et al.
    Dalarna University, School of Technology and Business Studies, Information Systems.
    Grönlund, Åke
    Örebro University.
    Cross cultural analysis of users' attitudes towards the use of mobile devices in second and foreign language learning in higher education: a case from Sweden and China2013In: Computers and education, ISSN 0360-1315, E-ISSN 1873-782X, Vol. 69, p. 169-180Article in journal (Refereed)
    Abstract [en]

    The present study examined the current state of students' attitudes toward mobile technology use in and for second and foreign language learning in higher education. Moreover, the study investigated if age, gender or cultural factors affect these attitudes. A total of 345 students from two in many aspects different countries, China (Yunnan University) and Sweden (Dalarna University) participated in this study. To access learners' perceptions toward mobile technology use, we employed Kearney's pedagogical framework to mobile learning from a socio-cultural perspective (Kearney, Schuck, Burden, & Aubusson, 2012). Hofstede's cultural dimensions were used to approach students' cultural views, as these dimensions represent some values – aspects of culture – that may affect attitudes toward technology and learning individually as well as in combination. The findings show the respondents' attitudes toward mobile learning are very positive with individualization being most positive (83%) followed by collaboration (74%), and authenticity (73%). The statistical analysis indicates that Hofstede's factors cannot explain the differences in mobile-assisted language learning (MALL) attitudes in the chosen sample. Among the personal factors, gender is identified to be a predictor to explain the differences in students' attitudes toward MALL. This study shows that technology itself seems to be the most important culture-shaping factor, more important than culture inherited from the physical environment, and more important than age.

  • 342.
    Viberg, Olga
    et al.
    Dalarna University, School of Technology and Business Studies, Information Systems.
    Grönlund, Åke
    Örebro University.
    Integrating mLearning Language Application into University Course Content2013In: Proceedings of the 12th World Conference on Mobile and Contextual Learning, 2013Conference paper (Refereed)
    Abstract [en]

    The idea that education can be considered as design science was brought up in the 1990s in order to bring the educational research from an experimental classroom into practice (Laurillard, 2012), at the time when the computers were introduced in educational settings. After that a number of theories focusing eLearning have arisen. Technologies are constantly changing, and new more pervasive mobile technologies increasingly influence individuals’ everyday lives. Among other things this influences humans’ social learning practices, and becomes an even more challenging task for educators. Design is critical to the successful development of any interactive learning environment (Mor & Winters, 2007). Mobile technology, as most other IT, is not primarily an educational phenomenon. It is a social phenomenon that happens in different parts of the world and in different ways. As emerging mobile technologies afford many advantages, such as flexibility and user-friendliness, researchers are exploring how to use them to support language learning (Huang et al., 2012). This paper presents a prototype for a cross-platform mobile language learning application developed for an online language course at Dalarna University in Sweden. The prototype is developed in order to support beginner second and foreign language learners in their vocabulary, listening and grammar learning. Considering mLearning to be a product of sociotechnical construction, the study applies a Design Science approach.

  • 343.
    Viberg, Olga
    et al.
    Dalarna University, School of Technology and Business Studies, Information Systems. Örebro University Business School, Örebro, Sweden.
    Grönlund, Åke
    Örebro University School of Business.
    Mobile Assisted Language Learning: A Literature Review2012In: 11th World Conference on Mobile and Contextual Learning, mLearn 2012, Helsinki, 2012Conference paper (Refereed)
    Abstract [en]

    Mobile assisted language learning (MALL) is a subarea of the growing field of mobile learning (mLearning) research which increasingly attracts the attention of scholars. This study provides a systematic review of MALL research within the specific area of second language acquisition during the period 2007 - 2012 in terms of research approaches, methods, theories and models, as well as results in the form of linguistic knowledge and skills. The findings show that studies of mobile technology use in different aspects of language learning support the hypothesis that mobile technology can enhance learners’ second language acquisition. However, most of the reviewed studies are experimental, small-scale, and conducted within a short period of time. There is also a lack of cumulative research; most theories and concepts are used only in one or a few papers. This raises the issue of the reliability of findings over time, across changing technologies, and in terms of scalability. In terms of gained linguistic knowledge and skills, attention is primarily on learners’ vocabulary acquisition, listening and speaking skills, and language acquisition in more general terms.

  • 344.
    Viberg, Olga
    et al.
    Dalarna University, School of Technology and Business Studies, Information Systems. Örebro University Business School, Örebro University, Örebro, Sweden).
    Grönlund, Åke
    Örebro University Business School, Örebro University, Örebro, Sweden).
    Systematising the field of mobile assisted language learning2013In: International Journal of Mobile and Blended Learning, ISSN 1941-8647, E-ISSN 1941-8655, Vol. 5, no 4, p. 72-90Article in journal (Refereed)
    Abstract [en]

    This study provides a systematic review of mobile assisted language (MALL) research within the specific area of second language acquisition (SLA) during the period of 2005-2012 in terms of research approaches, theories and methods, technology, and the linguistic knowledge and skills’ results. The findings show a shift from the prevailing SMS-based language learning in 2005-2008 towards the use of more advanced multimedia and intelligent learning systems in the last years. Many highly cited studies focus on design of mobile language earning systems and experimental evaluation of their effectiveness. Studies often draw on mature pedagogic models and methods. However, descriptive and small-scale experimental studies dominate. In terms of theoretical approaches and frameworks, there is a lack of specific reference to mobile learning conceptual and theoretical models, which makes it difficult to distinguish any specific mobile learning theories from other learning theories. Research has so far paid most attention to learners’ vocabulary acquisition

  • 345.
    Viberg, Olga
    et al.
    Dalarna University, School of Technology and Business Studies, Information Systems. Örebro University.
    Grönlund, Åke
    Örebro University.
    Understanding students’ learning practices: challenges for design and integration of mobile technology into distance education2017In: Learning, Media & Technology, ISSN 1743-9884, E-ISSN 1743-9892, Vol. 42, no 3, p. 357-377Article in journal (Refereed)
    Abstract [en]

    This study explores the design requirements for mobile applications for second language learning in online/distance higher education settings. We investigate how students use technology and how they perceive that these technologies-in-practice facilitate their language learning. Structuration Theory is used for the analysis. Results show that design needs to consider that (i) students use their private mobile technologies frequently when conducting self-initiated learning tasks, (ii) students’ mobile technologies-in-practice are important, and course designers should design materials and tools for such use practices, and (iii) students prefer to work on their own due to the limited time they want to devote to their learning. Consequently, in regard to the pervasive nature of mobile technology integration in society and into students’ habitual use, they need various software tools on such devices to support individual learning.

  • 346.
    Viberg, Olga
    et al.
    Dalarna University, School of Technology and Business Studies, Information Systems.
    Messina Dahlberg, Giulia
    Dalarna University, School of Education, Health and Social Studies, Education.
    MOOCs’ structure and knowledge management2013In: ICCE 2013 Conference Proceedings C3, 2013Conference paper (Refereed)
  • 347.
    Viberg, Olga
    et al.
    Dalarna University, School of Technology and Business Studies, Information Systems.
    Messina Dahlberg, Giulia
    Dalarna University, School of Education, Health and Social Studies, Education.
    Who Gains the Leading Position in Online Interaction?2011In: NGL 2012, Next Generation Learning Conference: Conference Proceedings, Falun: Högskolan Dalarna , 2011, p. 113-137Conference paper (Refereed)
    Abstract [en]

    In this paper, the focus is on the analysis of student-teacher interaction occurring in online synchronous virtual settings in higher education. The preliminary findings of the study draw upon empirical material that consists of 20 online sessions (both students-only and teacher-led, with approximately 40 hours of interaction material), that are parts of the “Italian for beginners” and “Russian for beginners” online language courses at university level and informal interviews with the participants.Our interests here relate to accounting for how students and teachers of the two online language courses interact inside a multimodal and multilingual online synchronous environment. The study deals with issues of how technology mediated multimodal communication affects power shift between teacher – student and student – student interaction. In particular the paper illustrates how videoconferencing reflects on power shifts between the participants and in what ways these shifts become significant for the learning process in these settings. Being inside the virtual classroom and only engaging in technology mediated communication to interact in a learning community means that the students and teachers need to adjust to the new media and artifacts available. The study takes a sociocultural theoretical approach to tracing the ways technology enhances or hinders communication in a community of practice where different literacy practices occur at the same time (Gee & Hayes, 2011).Preliminary findings show that the teachers as well as the students position themselves both as facilitators for other participants of the use of different modes as text chat, whiteboard, audio and video, and also as more peripheral participants who need to be guided in the communication afforded in the online environment. The active users of these different modes seem to obtain the keys to get access to the environment and the participation inside the group in contrast to the students who do not use all the available modes in the virtual settings, thus influencing the power shifts in the group during the same session.

  • 348.
    Vikström, Joakim
    Dalarna University, School of Technology and Business Studies, Information Systems.
    Utvärdering och betygsättning av användbarhet i ettContent Management System: Betygsättning i grafisk och kvantitativ form2018Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The thesis has been a study that would provide a way to evaluate usability and make a rating of usability in a selected content management system. The underlying problem that the thesis was conducted is that the rating of usability is inadequate in many evaluations of Content Management Systems. The study has used an existing framework that was developed for evaluating usability in mobile phones. This framework was modified so that it could instead be implemented on a Content Management System. The user tests used for data collection were performed by users selected through a selective selection based on experience in the use of information systems. Users rated different usability indicators depending on their experience during the performance of the task. The data collected was compiled in an Excel-file and for each user's ratings of the various usability indicators, a pentagon chart was compiled from these grades.The study's results presented an analysis of the evaluation that implemented the various parts of the framework. The analysis showed different results from the test users and the results could easily be read from the pentagon charts.The study's conclusion is that the adapted framework is based on existing theories and methods of evaluating usability and the rating is based on existing approaches in the framework.The identified components of the framework are the evaluation section, user tests and think-aloud, and the grading scale, scorecard and pentagon chart.

  • 349.
    Wallin, Nils
    et al.
    Dalarna University, School of Technology and Business Studies, Information Systems.
    Olsson, Erik
    Dalarna University, School of Technology and Business Studies, Information Systems.
    Praktiska effekter av begreppsförvirring för en databas konceptuella design: En fallstudie om databas- och begreppsmodellering2010Independent thesis Basic level (degree of Bachelor)Student thesis
    Abstract [sv]

    Company X develops a laboratory information system (LIS) called System Y. The information system has a two-tier database architecture consisting of a production database and a historical database. A database constitutes the backbone of a IS, which makes the design of the database very important. A poorly designed database can cause major problems within an organization. The two databases in System Y are poorly modeled, particularly the historical database. The cause of the poor modeling was unclear concepts. The unclear concepts have remained in the database and in the company organization and caused a general confusion of concepts. The split database architecture itself has evolved into a bottleneck and is the cause of many problems during the development of System Y. Company X investigates the possibility of integrating the historical database with the production database. The goal of our thesis is to conduct a consequence analysis of such integration and what the effects would be on System Y, and to create a new design for the integrated database. We will also examine and describe the practical effects of confusion of concepts for a database conceptual design. To achieve the goal of the thesis, five different method steps have been performed: a preliminary study of the organization, a change analysis, a consequence analysis and an investigation of the conceptual design of the database. These method steps have helped identify changes necessary for the organization, a new design proposal for an integrated database, the impact of the proposed design and a number of effects of confusion for the database.

  • 350.
    Wande, Johan
    et al.
    Dalarna University, School of Technology and Business Studies, Information Systems.
    Malm, Jens
    Dalarna University, School of Technology and Business Studies, Information Systems.
    Mått för att mäta kodkvalitet undersystemutvecklingsprocessen2015Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The desire to ascertain a high level of quality on the code written during the development of systems and applications is not something new in the system development world. Several larger companies use different kinds of metrics to measure the quality of the code in their systems with the goal of maintaining high reliability and quality.Trafikverket is a government authority responsible for the operation of the system that keeps the Swedish railroad running. Their systems play an important part in ensuring the operation and to ensure that train positions, the planning of departures and error handling works around the clock for the entire country, they find it important and strive to maintain the high quality of the systems.The aim of this thesis was to find out which measurements may be possible to use during the system development process to measure the quality of the code and how measurements can be used to increase the quality of IT solutions. It should be possible to measure the quality of the code that is written in both existing and newly developed systems at an early stage. The study is a case study conducted at Trafikverket, the metrics that were examined were code coverage, the level of maintainability index and the number of reported incidents for each system. Measurements were performed on seven of Trafikverket's systems. In the analysis the measurements were compared to the number of reported incidents. Interviews were conducted to provide a picture of how the operation of the development may affect the quality. Through literature studies we discovered a metric that could not be used practically in this case, this was cyclomatic complexity, it is available as part of the maintainability index, but also separately affects the ability to write unit tests. The results of the study show that the measurements are useful for this purpose but should not be used as individual metrics to measure quality because they all have their own function. A clear link between the level of the code coverage and the number of incidents could be observed in the investigated systems where high code coverage provides a lower rate of incidents. No correlation between maintainability index and incidents could be found.

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