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  • 401.
    Chatzimparmpas, Angelos
    et al.
    University of Western Macedonia, Greece.
    Bibi, Stamatia
    University of Western Macedonia, Greece.
    Maintenance process modeling and dynamic estimations based on Bayesian Networks and Association Rules2019In: Journal of Software: Evolution and Process, ISSN 2047-7473, E-ISSN 2047-7481, Vol. 31, no 9, article id e2163Article in journal (Refereed)
    Abstract [en]

    Managing the maintenance process and estimating accurately the effort and duration required for a new release is considered to be a crucial task as it affects successful software project survival and progress over time. In this study, we propose the combination of two well-known machine learning (ML) techniques, Bayesian Networks (BNs), and Association Rules (ARs) for modeling the maintenance process by identifying the relationships among the internal and external quality metrics related to a particular project release to both the maintainability of the project and the maintenance process indicators (i.e., effort and duration). We also exploit Bayesian inference, to test the effect of certain changes in internal and external project factors to the maintainability of a project. We evaluate our approach through a case study on 957 releases of five open source JavaScript applications. The results show that the maintainability of a release, the changes observed between subsequent releases, and the time required between two releases can be accurately predicted from size, complexity, and activity metrics. The proposed combined approach achieves higher accuracy when evaluated against the BN model accuracy.

  • 402.
    Chatzimparmpas, Angelos
    et al.
    Linnaeus University, Faculty of Technology, Department of computer science and media technology (CM).
    Bibi, Stamatia
    University of Western Macedonia, Greece.
    Zozas, Ioannis
    University of Western Macedonia, Greece.
    Kerren, Andreas
    Linnaeus University, Faculty of Technology, Department of computer science and media technology (CM).
    Analyzing the Evolution of JavaScript Applications2019In: Proceedings of the 14th International Conference on Evaluation of Novel Approaches to Software Engineering - Volume 1: ENASE, SciTePress, 2019, Vol. 1, p. 359-366Conference paper (Refereed)
    Abstract [en]

    Software evolution analysis can shed light on various aspects of software development and maintenance. Up to date, there is little empirical evidence on the evolution of JavaScript (JS) applications in terms of maintainability and changeability, even though JavaScript is among the most popular scripting languages for front-end web applications. In this study, we investigate JS applications’ quality and changeability trends over time by examining the relevant Laws of Lehman. We analyzed over 7,500 releases of JS applications and reached some interesting conclusions. The results show that JS applications continuously change and grow, there are no clear signs of quality degradation while the complexity remains the same over time, despite the fact that the understandability of the code deteriorates.

  • 403.
    Chatzimparmpas, Angelos
    et al.
    Linnaeus University, Faculty of Technology, Department of computer science and media technology (CM).
    Martins, Rafael Messias
    Linnaeus University, Faculty of Technology, Department of computer science and media technology (CM).
    Jusufi, Ilir
    Linnaeus University, Faculty of Technology, Department of computer science and media technology (CM).
    Kerren, Andreas
    Linnaeus University, Faculty of Technology, Department of computer science and media technology (CM).
    A Survey of Surveys on the Use of Visualization for Interpreting Machine Learning Models2020In: Information Visualization, ISSN 1473-8716, E-ISSN 1473-8724Article in journal (Refereed)
    Abstract [en]

    Research in Machine Learning (ML) has become very popular in recent years, with many types of models proposed to comprehend and predict patterns and trends in data originating from different domains. As these models get more and more complex, it also becomes harder for users to assess and trust their results, since their internal operations are mostly hidden in black boxes. The interpretation of ML models is currently a hot topic in the Information Visualization (InfoVis) community, with results showing that insights from ML models can lead to better predictions and improve the trustworthiness of the results. Due to this, multiple (and extensive) survey articles have been published recently trying to summarize the high number of original research papers published on the topic. But there is not always a clear definition of what these surveys cover, what is the overlap between them, which types of ML models they deal with, or what exactly is the scenario that the readers will find in each of them. In this article, we present a meta-analysis (i.e., a “survey of surveys”) of manually collected survey papers that refer to the visual interpretation of ML models, including the papers discussed in the selected surveys. The aim of our article is to serve both as a detailed summary and as a guide through this survey ecosystem by acquiring, cataloging, and presenting fundamental knowledge of the state of the art and research opportunities in the area. Our results confirm the increasing trend of interpreting ML with visualizations in the past years, and that visualization can assist in, for example, online training processes of deep learning models and enhancing trust into ML. However, the question of exactly how this assistance should take place is still considered as an open challenge of the visualization community.

  • 404.
    Chatzimparmpas, Angelos
    et al.
    Linnaeus University, Faculty of Technology, Department of computer science and media technology (CM).
    Martins, Rafael Messias
    Linnaeus University, Faculty of Technology, Department of computer science and media technology (CM).
    Kerren, Andreas
    Linnaeus University, Faculty of Technology, Department of computer science and media technology (CM).
    t-viSNE: A Visual Inspector for the Exploration of t-SNE2018In: Presented at IEEE Information Visualization  (VIS '18), Berlin, Germany, 21-26 October, 2018, 2018Conference paper (Refereed)
    Abstract [en]

    The use of t-Distributed Stochastic Neighborhood Embedding (t-SNE) for the visualization of multidimensional data has proven to be a popular approach, with applications published in a wide range of domains. Despite their usefulness, t-SNE plots can sometimes be hard to interpret or even misleading, which hurts the trustworthiness of the results. By opening the black box of the algorithm and showing insights into its behavior through visualization, we may learn how to use it in a more effective way. In this work, we present t-viSNE, a visual inspection tool that enables users to explore anomalies and assess the quality of t-SNE results by bringing forward aspects of the algorithm that would normally be lost after the dimensionality reduction process is finished.

  • 405.
    Chatzipanagiotou, Niki
    Linnaeus University, Faculty of Technology, Department of Informatics.
    Advancing an Academic Library's services through application of Soft Systems Methodology2014Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    The Master thesis focuses on the application of Information Systems in the field of Library and Information Science.  Within the context of organizational learning, a collaborative user-centered approach is used to produce desired system characteristics and future research suggestions.

    More specifically, this research study explores the library users’ and academic librarians’ perceptions of the current library discovery and access services as mediated through the Online Public Access Catalogue (OPAC) of the Academic Library of the School of Philosophy at Athens University in Greece. Additionally, it explores their desired characteristics for the ‘public facing’ Integrated Library System (ILS), of which the OPAC constitutes a module, in order to generate recommendations that guide the Academic Library staff members’ collaborative design of a more user-centered library information system.

    The study is built upon the systems thinking framework of Checkland’s Soft Systems Methodology (SSM). Applied theories and design processes guide research processes aimed at advancing both inclusive social learning and system improvements.

  • 406.
    Chatzipanagiotou, Niki
    Linnaeus University, Faculty of Technology, Department of Informatics.
    Toward An Integrated Approach to Information Management: A Literature Review2017In: Strategic Innovative Marketing / [ed] Kavoura, Androniki, Sakas, Damianos P., Tomaras, Petros, Springer, 2017, , p. 06p. 667-673Conference paper (Refereed)
    Abstract [en]

    In this literature review, the author examines the scholarly literature of Information Management (IM) and related fields in the recognition that information has long been an important asset for any organization. However, nowadays the work environment in organizations is more complicated due to the information overload that employees experience on a daily basis. The information deluge requires employees’ swift attention, analysis, and action within a limited time. In response, Information Management aids organizations manage information and realize its potential. This literature review reveals that scholars have given various interpretations to the term according to the perspective (organizational, library, and personal) under which Information Management is examined. Additionally, the term is often used interchangeably with other terms such as knowledge management, data management, content management, etc. Within this multidisciplinary framework, the author presents various definitions of the meaning of Information Management, including a synthesis working concept, to guide her doctoral studies. Paper conclusions recommend an integrated approach to information management which combines the organizational and the library perspective of Information Management, as advanced by Detlor. This proposal emerges out of recognition that a library is a dynamic, living information and knowledge creation organization. Fulfillment of this potential requires that information processes are integrated in librarians’ daily work life in order to contribute to organizational learning. This paper could serve as a starting point for an exploratory research study on an integrated approach for Information Management that can contribute to organizational learning in library organizations.

  • 407.
    Chavan, Swapnil
    et al.
    Linnaeus University, Faculty of Health and Life Sciences, Department of Chemistry and Biomedical Sciences.
    Abdelaziz, Ahmed
    eADMET GmbH, Germany.
    Wiklander, Jesper G.
    Linnaeus University, Faculty of Health and Life Sciences, Department of Chemistry and Biomedical Sciences.
    Nicholls, Ian A.
    Linnaeus University, Faculty of Health and Life Sciences, Department of Chemistry and Biomedical Sciences. Uppsala University.
    A k-nearest neighbor classification of hERG K+ channel blockers2016In: Journal of Computer-Aided Molecular Design, ISSN 0920-654X, E-ISSN 1573-4951, Vol. 30, no 3, p. 229-236Article in journal (Refereed)
    Abstract [en]

    A series of 172 molecular structures that block the hERG K+ channel were used to develop a classification model where, initially, eight types of PaDEL fingerprints were used for k-nearest neighbor model development. A consensus model constructed using Extended-CDK, PubChem and Substructure count fingerprint-based models was found to be a robust predictor of hERG activity. This consensus model demonstrated sensitivity and specificity values of 0.78 and 0.61 for the internal dataset compounds and 0.63 and 0.54 for the external (PubChem) dataset compounds, respectively. This model has identified the highest number of true positives (i.e. 140) from the PubChem dataset so far, as compared to other published models, and can potentially serve as a basis for the prediction of hERG active compounds. Validating this model against FDA-withdrawn substances indicated that it may even be useful for differentiating between mechanisms underlying QT prolongation.

  • 408. Cheng, Betty
    et al.
    Lemos, Rogério
    Giese, Holger
    Inverardi, Paola
    Magee, Jeff
    Andersson, Jesper
    Växjö University, Faculty of Mathematics/Science/Technology, School of Mathematics and Systems Engineering.
    Becker, Basil
    Bencomo, Nelly
    Brun, Yuriy
    Cukic, Bojan
    Serugendo, Marzo
    Dustdar, Schahram
    Finkelstein, Anthony
    Gacek, Cristina
    Geihs, Kurt
    Grassi, Vincenzo
    Karsai, Gabor
    Kienle, Holger
    Kramer, Jeff
    Litoiu, Marin
    Malek, Sam
    Mirandola, Raffaela
    Müller, Hausi
    Park, Sooyong
    Shaw, Mary
    Tichy, Matthias
    Tivoli, Massimo
    Weyns, Danny
    Whittle, Jon
    Software Engineering for Self-Adaptive Systems: A Research Roadmap2009In: Software Engineering for Self-Adaptive Systems / [ed] Betty H.C. Cheng, Rogério de Lemos, Holger Giese, Paola Inverardi and Jeff Magee, Springer, 2009, Vol. 5525, p. 1-26Chapter in book (Other academic)
  • 409.
    Cherkasov, Stanislav
    Linnaeus University, Faculty of Technology, Department of Computer Science.
    Framework integration in practice2015Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Development of modern software is a challenging task that requires software developers to leverageexisting functionality by means of reusable code structures, libraries, frameworks and middleware. This allows shortening development time and lowering costs, while keeping resulting software competitive, reliable and maintainable.However, developing software based on reuse of existing libraries and frameworks has its own challenges and requires programmers to be aware of the issuesthey might face.This paper discusses common difficultiesfaced by software developers while developing complex software systems based on reusable libraries and frameworks.The issuesare described along with possible solutions and exemplified by a custom UI framework named AxeZ. AxeZ is designed for customized UI development for Android phones and is built on top of OpenGL and Bullet Physics engine.As a result, AxeZ can be consideredan instanceof successfully designed framework, which implements solutions forthe challenges discussed in this paper. It provides an example of reusable framework targeted for wide area of application in UI programming

  • 410.
    Chernenko, Andrii
    Linnaeus University, Faculty of Technology, Department of computer science and media technology (CM).
    Facilitating comprehension of Swift programs2018Independent thesis Advanced level (degree of Master (Two Years)), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Program comprehension is the process of gaining knowledge about software system by extracting it from its source code or observing its behavior at runtime. Often, when documentation is unavailable or missing, this is the only reliable source of knowledge about the system, and the fact that up to 50% of total maintenance effort is spent understanding the system makes it even more important. The source code of large software systems contains thousands, sometimes millions of lines of code, motivating the need for automation, which can be achieved with the help of program comprehension tools. This makes comprehension tools an essential factor in the adoption of new programming languages. This work proposes a way to fill this gap in the ecosystem of Swift, a new, innovative programming language aiming to cover a wide range of applications while being safe, expressive, and performant. The proposed solution is to bridge the gap between Swift and VizzAnalyzer, a program analysis framework featuring a range of analyses and visualizations, as well as modular architecture which makes adding new analyses and visualizations easier. The idea is to define a formal model for representing Swift programs and mapping it to the common program model used by VizzAnalyzer as the basis for analyses and visualizations. In addition to that, this paper discusses the differences between Swift and programming languages which are already supported by VizzAnalyzer, as well as practical aspects of extracting the models of Swift programs from their source code.

  • 411.
    Choo, Melissa
    Linnaeus University, Faculty of Technology, Department of Informatics.
    Exploring Knowing in Practice: An Ethnographic Study of Teams in the Agile Setting2014Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Studies related to knowledge often fall under the traditional knowledge management discourse which views knowledge as a static and transferable entity. However, the predominant knowledge in agile software development is tacit and resides in the heads of individuals with the expertise. The study acknowledges the importance of human agency and moves away from the view of knowledge as a static entity to the perspective of “knowing” which is constituted in our daily actions and practices. The focus is to examine how “knowing” or knowledgeability is enacted through the practices of teams in agile projects.

    A conceptual model was developed from current literature and used as a guide for data collection and analysis. The study subscribed to phenomenological hermeneutics as the philosophical tradition to interpret meaning and the worldviews of the participants. Ethnographic research was conducted in two companies which work with software development using agile methodologies. The findings indicated several practices which were enacted by the two organizations, of which many of them appeared to be interrelated. The “knowing” which was constituted in these practices were categorized as “knowing how to develop competencies/ capabilities” and “knowing how to coordinate effort”.

    The practices found in the study were similar to some of the practices commonly cited in current knowledge management literature. Notwithstanding this, new knowledge was not created from the conversion of tacit to explicit knowledge and vice versa. On the contrary, “knowing how” was generated and sustained through the ongoing actions and everyday practices of the individuals in the agile teams.

  • 412.
    Choren, Ricardo
    et al.
    PUC-Rio, Brazil.
    Garcia, Alexandro
    PUC-Rio, Brazil.
    Lucena, Carlos
    PUC-Rio, Brazil.
    Griss, Martin
    Carnegie Melon West.
    Kung, David
    University of Texas at Arlington.
    Minsky, Naftaly
    Rutgers University.
    Romanovsky, Alexander
    University of New Castle upon Tyne, UK.
    Castro, Jaelsson
    UFPE, Brazil.
    de Lemos, Rodgério
    University of Kent, UK.
    Weyns, Danny
    K.U. Leuven .
    Software engineering for large-scale multi-agent systems-SELMAS 2004: workshop report2004In: ACM SIGSOFT Software Engineering Notes, Vol. 29, no 5, p. 1-10Article in journal (Refereed)
  • 413.
    Choudhry, Aurang-Zeb
    Linnaeus University, Faculty of Technology, Department of Informatics.
    Application Outsourcing Governance Model: Critical components of a Successful Application Outsourcing Governance Framework2014Independent thesis Advanced level (degree of Master (One Year)), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Emerging technologies have changed the environment of global competition; many IT-firms are adapting new trends of offshore software development to attain latest and low costs services. This research report is aimed to fill the literature void on application outsourcing governance and emphasize on the components critical for a successful application outsourcing governance model. The research is conducted on a service-buyer IT-firm which forwards software development assignments to its vendors locally as well as globally. Research employs qualitative method where social constructivist philosophical worldview is used to gain practical understanding of participants’ viewpoints on the research topic; research uses inductive approach which is intended at theory building. Three types of interview methods are used for data collection; analytical process of Grounded Theory is used to analyze the data systemically. GT coding technique is used to code collected data into different concepts by constant comparison and by asking questions; similar concepts are gathered under different categories. One core category and seven key categories are emerged from the data; these categories represent the key components of application outsourcing governance model. Finally, these components integrate in order to form application outsourcing governance framework for successful deliveries of application outsourcing projects. 

  • 414.
    Chow, Joyce
    et al.
    Interactive Institute Swedish ICT AB.
    Kusoffsky, Madeleine
    Interactive Institute Swedish ICT AB.
    Kurti, Arianit
    Interactive Institute Swedish ICT.
    From Abstract to Concrete: Telling Math Stories with Cards2016In: Proceedings of the 14th Participatory Design Conference: Short Papers, Interactive Exhibitions, Workshops - Volume 2, ACM Press, 2016, p. 90-91Conference paper (Refereed)
    Abstract [en]

    Our research project, funded by Vinnova, has the aim to produce a catalog of future visions of mathematics learning at the middle school level in Sweden. Our research team and reference group involves members from different backgrounds and ages including designers, programmers, teachers, pedagogues, and middle school students.

  • 415.
    Chowdhury, Soumitra
    Halmstad University.
    Expanding Business from Products to Digital Services: Value Dimensions of Digital Services Enabled by Embedded Technology2014In: Proceedings of the 8th Mediterranean Conference on Information Systems / [ed] Mola, L., Carugati, A., Kokkinaki, A., Pouloudi, N., 2014, p. Paper 12-Conference paper (Refereed)
    Abstract [en]

    Manufacturing firms are now embedding digital technology into products with an aim to offer digital services to their customers. Digital services create opportunities for firms to add new value dimensions to their businesses as firms now can expand their businesses from tangible products to digital services. Existing research explains three value dimensions. ‘Value-in-exchange’ is traditionally followed by manufacturing firms where they determine monetary value for their products and exchange the value with customers. Recent research argues that ‘value-in-exchange’ is not customer centric and therefore to gain customer value, ‘value-in-use’ and ‘value-in-cocreation’ are necessary. With growing utilization of embedded digital technology in products, new digital services are rendered and new value dimensions are emanating. Existing research informs little about the value dimensions of digital services that result from the combination of digital technology and tangible products. Therefore, in this research, we seek answer to the question, ‘What are the value dimensions of digital services that are enabled by embedded digital technology in tangible products?’ A qualitative study has been conducted to investigate Remote Diagnostics Services (RDS) for vehicles. Along with the three known value dimensions, that is, value-in-exchange, value-in-use and value-incocreation, this research contributes to knowledge by showing two new value dimensions: ‘value-in-connectivity’ and ‘value-in-architecture’.

  • 416.
    Chowdhury, Soumitra
    Halmstad University ; University of Gothenburg.
    Service Logic in Digitalized Product Platforms: A Study of Digital Service Innovation in the Vehicle Industry2015Doctoral thesis, comprehensive summary (Other academic)
    Abstract [en]

    The digitalization of products has become an important driver for service innovation in manufacturing firms. The embedding of digital technology in previously non-digital products creates digitalized product platforms that enable digital service innovation. Digital service innovation offers new business opportunities for manufacturing industries, as well as challenges established premises for value creation.  While digital service innovation can be found in many manufacturing industries, this thesis studies service logic in digitalized product platforms in the vehicle industry.

    Existing Information Systems (IS) literature presents challenges in digital service innovation relating to value, architecture, and generativity. The design of the architecture of digitalized product platforms requires the identification and combination of digital and non-digital assets. Understanding the architectural aspects is useful in digital service innovation. Moreover, with growing instances of generative digital technologies, it is challenging to develop strategies to leverage generativity for service design in digitalized product platforms. While digital technologies are embedded in products, the role of technology-embeddedness in value creation of digital services is relatively unexplored. Drawing on these challenges, this thesis describes and conceptualizes the underlying premises brought by the architecture and generativity to the value creation of services in digitalized product platforms. The research question addressed in this thesis is: What are the underlying premises for services in digitalized product platforms?

    To address the question, an interpretive qualitative research approach was adopted in a collaborative research project concerning services enabled by digitalization of vehicles. Drawing on digital innovation and service literature, this thesis presents a theoretical perspective on the role of the architecture and generativity of digitalized product platforms for value creation of digital services. This perspective is conceptualized as underlying premises for this specific class of services. The premises frame the service logic in digitalized product platforms and provide a ground for understanding services in digitalized product platforms in relation to value dimensions, architecture and generativity. The premises are based on five concepts: value-in-architecture, value-in-connectivity, fundamental asset for value creation, mutual dependence of modular and layered modular assets, and re-evaluation of value propositions. The proposed premises offer a basis for understanding value creation of this class of services, and guidance for manufacturing firms designing digitalized product platforms.

  • 417.
    Chowdhury, Soumitra
    et al.
    Halmstad university.
    Akram, Asif
    Högskolan i Halmstad, Människa och Informationsteknologi (MI-lab).
    Challenges and Opportunities Related to Remote Diagnostics: An IT-based Resource Perspective2013In: International Journal of Information Communication Technologies and Human Development, ISSN 1935-5661, E-ISSN 1935-567X, Vol. 5, no 3, p. 80-96Article in journal (Refereed)
    Abstract [en]

    Remote diagnostics is expanding the business scope of vehicle manufacturers, ranging from products to services. In this paper, we focus on investigating the business challenges and opportunities related to the remote diagnostics of vehicles from an IT-based resource perspective. Remote diagnostics involves technology, human skills and intangibles. IT-based resources consist of physical IT infrastructure, human IT skills and IT-enabled intangibles. In this study, we find that remote diagnostics not only faces challenges in these three categories of IT-based resource, but also creates opportunities. One contribution of this paper is to provide an overview of the challenges and opportunities for business related to the technology. The paper also makes a contribution to information systems by shedding light on the discussion of digital infrastructure. It also highlights the application of IT-based resource perspective to find out the business challenges and opportunities of an emerging technology like remote diagnostics.

  • 418.
    Chowdhury, Soumitra
    et al.
    Halmstad University.
    Akram, Asif
    Halmstad University.
    E-Maintenance: Opportunities and Challenges2011In: Proceedings of IRIS 2011: TUCS Lecture Notes, Turku Centre for Computer Science, 2011 / [ed] Timo Leino, Turku: Turku Centre for Computer Science , 2011, p. 68-81Conference paper (Refereed)
    Abstract [en]

    E-maintenance offers various opportunities as well as challenges in contemporary business undergoing transformation. This paper provides an overview of opportunities and challenges in different areas related to e-maintenance. Literature review and empirical findings through action oriented research give way to identify and present these opportunities and challenges. One contribution of the paper is, it finds the opportunities and challenges with e-maintenance in different industries which creates a pathway for future direction in further studies regarding e-maintenance. The findings indicate that there is much potential to study these with respect to technology and business.

  • 419.
    Chowdhury, Soumitra
    et al.
    Halmstad University.
    Akram, Asif
    Halmstad University.
    Åkesson, Maria
    Halmstad University.
    E-Maintenance as an Emerging Customer Value Generating IT-Enabled Resource2012In: MCIS 2012 Proceedings, Elsevier, 2012, article id 8Conference paper (Refereed)
    Abstract [en]

    This paper reports business related challenges and opportunities for e-maintenance as an emerging customer value generating IT-enabled resource. The research study is concerned with the e- maintenance based on remote diagnostics in the vehicle industry. E-maintenance of vehicles is of great importance as e-maintenance technology has great potential to provide various state of the art maintenance related services for the vehicles. This emerging technology brings challenges and opportunities to generate value both for the companies and their customers. In this paper, we have presented several business related challenges and opportunities for e-maintenance. In the form of a set of propositions, the contribution of this paper is to conceptualize e-maintenance as an emerging customer value generating IT-enabled resource by showing challenges and opportunities related to it.

  • 420.
    Chowdhury, Soumitra
    et al.
    Halmstad university.
    Bergquist, Magnus
    Halmstad university.
    Åkesson, Maria
    Halmstad university.
    Architectural Characteristics of Digital Services Enabled by Embedded Technology: A Study on Remote Diagnostics Services2014In: Proceedings of the 47th Annual Hawaii International Conference on System Sciences: 6-9 January 2014: Waikoloa, Hawaii / [ed] Ralph H. Sprague, Jr., Los Alamitos, CA: IEEE, 2014, p. 3909-3918, article id 6759087Conference paper (Refereed)
    Abstract [en]

    In this paper, we characterize the architecture of digital services that are enabled by embedded technology. Digitalization with embedded technology in physical products has become a common phenomenon. In spite of growing instance of such digitalization, little is known about the architectural characteristics of digital services enabled by embedded technology. Based on a research on vehicular remote diagnostics services, we characterize the architecture of such digital services. Following the framework on layered modular architecture continuum, our findings provide the following architectural characteristics: i) the architecture of the digital services spans along the layered modular architecture continuum, ii) the application program of the digital services is simultaneously de-coupled and partly coupled with the embedded devices, iii) there exist layers within layer of the digital services, iv) application program layer of the digital services is a closed innovation platform. © 2014 IEEE

  • 421.
    Chronéer, Diana
    et al.
    Division of Industrial Management, Luleå University of Technology.
    Mirijamdotter, Anita
    Växjö University, Faculty of Mathematics/Science/Technology, School of Mathematics and Systems Engineering.
    Systems Thinking Benefits in Supply Change Management: An illustration of the viable systems model in a supply chain2009In: International Journal of Intelligent Systems Technologies and Applications, ISSN 1740-8865, E-ISSN 1740-8873, Vol. 6, no 3/4, p. 227-248Article in journal (Refereed)
    Abstract [en]

    Existing product development models are solely an organisational matter. They do not take into consideration the whole Supply chain (SC) and its different actors. In this article, we investigate how Supply Chain Management and Viable System Model (VSM) can support and create an effective use of information in product development and hence identify critical linkages in the SC. The aim is to introduce VSM as a framework that enables an analysis of companies’ SCs and visualise vital inter-organisational relationships that should be integrated in product development.

  • 422.
    Chronéer, Diana
    et al.
    Luleå University of Technology.
    Mirijamdotter, Anita
    Linnaeus University, Faculty of Technology, Department of Informatics.
    Runardotter, Mari
    Luleå University of Technology.
    Ståhlbröst, Anna
    Luleå University of Technology.
    The Missing Chart and Compass to Open Governance: Research in progress2018In: Presented at SWEG 2018. The 15th Scandinavian Workshop on E-Government / [ed] Normann Andersen, K., Zinner Henriksen, H., Copenhagen, 2018Conference paper (Refereed)
    Abstract [en]

    Today’s society is facing a number of pervasive societal trends such as increased globalization, accelerating urbanisation, a growing knowledge society, stronger individualization, as well as increased variety and pluralism (SOU 2016:89). These phenomena are driven and enabled by the data driven digitalization and new technologies, and taken together they indicate that a digital transformation is ongoing. In the end the digital transformation of the society will influence all, from individuals to nations and globally. It is plausible to say that the digital transformation is unescapable and Janowski (2015) claims that it is clear that governments and policymakers must pay attention to and be ready to govern the digital space since many of the cultural, political, economical and other human activities now occur in the digital space. Sweden aims high, in 2012 the Swedish government appointed Digitaliseringskommissionen the mission to realize the IT policy goal; to become supreme in making use of all the possibilities that digitalization brings along. Digitaliseringskommissionen states that Sweden is strong in areas such as infrastructure, human capital and use of the Internet, and have many ICT specialists, but Sweden is weak when it comes to digitalizing the public sphere; there is lack of co-ordination of administrations (finding common solutions) and open data (SOU 2016:89).

  • 423.
    Claes, Rutger
    et al.
    Katholieke Universiteit Leuven, Belgium.
    Holvoet, Tom
    Katholieke Universiteit Leuven, Belgium.
    Weyns, Danny
    Katholieke Universiteit Leuven, Belgium.
    A Decentralized Approach for Anticipatory Vehicle Routing Using Delegate Multiagent Systems2011In: IEEE transactions on intelligent transportation systems (Print), ISSN 1524-9050, E-ISSN 1558-0016, Vol. 12, no 2, p. 364-373Article in journal (Refereed)
    Abstract [en]

    Advanced vehicle guidance systems use real-time traffic information to route traffic and to avoid congestion. Unfortunately, these systems can only react upon the presence of traffic jams and not to prevent the creation of unnecessary congestion. Anticipatory vehicle routing is promising in that respect, because this approach allows directing vehicle routing by accounting for traffic forecast information. This paper presents a decentralized approach for anticipatory vehicle routing that is particularly useful in large-scale dynamic environments. The approach is based on delegate multiagent systems, i.e., an environment-centric coordination mechanism that is, in part, inspired by ant behavior. Antlike agents explore the environment on behalf of vehicles and detect a congestion forecast, allowing vehicles to reroute. The approach is explained in depth and is evaluated by comparison with three alternative routing strategies. The experiments are done in simulation of a real-world traffic environment. The experiments indicate a considerable performance gain compared with the most advanced strategy under test, i.e., a traffic-message-channel-based routing strategy.

  • 424.
    Clarinsson, Richard
    Växjö University, Faculty of Mathematics/Science/Technology, School of Mathematics and Systems Engineering.
    Hur sökfraser är utformade2006Independent thesis Advanced level (degree of Master (One Year)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Millions of people are using search engines every day when they are trying to find information on the Internet. The purpose of this report is to find out how people formulate search queries. The result in this report is based on an empirical study which is based on a search log from the Swedish search engine Seek.se.

    One of the results in this thesis is that nearly all search queries are based on keywords.

  • 425.
    Clarinsson, Richard
    et al.
    Växjö University, Faculty of Mathematics/Science/Technology, School of Mathematics and Systems Engineering.
    Magnusson, Samuel
    Växjö University, Faculty of Mathematics/Science/Technology, School of Mathematics and Systems Engineering.
    The PHP programmer`s guide to secure code2005Student thesis
    Abstract [en]

    Abstract

    Security threats against computer systems are a big problem today which also includes PHP made applications. The report is focused on protection with the help of code and not how you protect a web server. Its purpose is not to educate the readers of the thesis how to make a PHP application, the purpose is how to program a safer PHP application. The thesis contains information about common security threats against PHP scripts. It contains in most cases examples of what an attack can look like and how a protection for that example can be achieved. We have tested all code examples if they work by installing our own server with the configurations according to the delimitations of the thesis and putting up small PHP applications, which we have attacked and then protected. The contents and result of this thesis can benefit developers that use PHP as a programming language for creating web applications, by giving them information about common threats and protection.

  • 426.
    Clemmensen, Christian
    et al.
    Växjö University, Faculty of Mathematics/Science/Technology, School of Mathematics and Systems Engineering.
    Winsth, Jonas
    Växjö University, Faculty of Mathematics/Science/Technology, School of Mathematics and Systems Engineering.
    Konceptuell modell av dataomvandling till USB2006Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Alstom Power in Växjö develop and sell equipment like electro filters for enviromental purposes

    for the power industry.

    Those filters are controlled and regulated by controlunits, communicating via an Alstoms

    own standrad called “Fläktbuss”. To supervise and maintain this system, a solution of PDA and

    USB communication is intresting. To make this USB – Fläktbuss adaption an active conversion

    of data is required.

    This diplomawork will contain and discuss problems and solutions about this conversion.

  • 427.
    Cohen, Shavit
    Linnaeus University, Faculty of Technology, Department of Media Technology.
    Creating Innovative Pedagogical Opportunities via “Treasure-HIT”: Mobile Treasure Hunt Games Generator2015Independent thesis Advanced level (degree of Master (Two Years)), 80 credits / 120 HE creditsStudent thesis
    Abstract [en]

    In this thesis we are presenting a design-based research aimed to extend an existing mobile-based environment named “Treasure-HIT”. “Treasure-HIT” is an environment which uses the available mobile technology to enable teachers to conduct pedagogical “Treasure Hunt” games for their students. At baseline (January 2013), “Treasure-HIT” was at its early stages and has not yet been officially released; only a few teachers were granted access to it. The goal of this thesis was to test the system with teachres in order to understand the actual needs to detect difficulties and usabily limitations and to improve the system accordingy.The sudy was conducted as a design-based research that included three iterations. Within each iteration we have identified needs expressed by teachers and improved the relevant system features. The outcome of this thesis was the design, development and implementation of 7 different features that increased the usability of the “Treasure-HIT” environment and its potential to effectievy support the creation and enactment of pedagogical location based activities.

  • 428.
    Coimbra, Danilo B.
    et al.
    University of São Paulo, Brazil.
    Martins, Rafael Messias
    University of São Paulo, Brazil.
    Neves, Tácito T. A. T.
    University of São Paulo, Brazil.
    Telea, Alexandru C.
    University of Groningen, The Netherlands.
    Paulovich, Fernando V.
    University of São Paulo, Brazil.
    Explaining three-dimensional dimensionality reduction plots2016In: Information Visualization, ISSN 1473-8716, E-ISSN 1473-8724, Vol. 15, no 2, p. 154-172Article in journal (Refereed)
    Abstract [en]

    Understanding three-dimensional projections created by dimensionality reduction from high-variate datasets is very challenging. In particular, classical three-dimensional scatterplots used to display such projections do not explicitly show the relations between the projected points, the viewpoint used to visualize the projection, and the original data variables. To explore and explain such relations, we propose a set of interactive visualization techniques. First, we adapt and enhance biplots to show the data variables in the projected threedimensional space. Next, we use a set of interactive bar chart legends to show variables that are visible from a given viewpoint and also assist users to select an optimal viewpoint to examine a desired set of variables. Finally, we propose an interactive viewpoint legend that provides an overview of the information visible in a given three-dimensional projection from all possible viewpoints. Our techniques are simple to implement and can be applied to any dimensionality reduction technique. We demonstrate our techniques on the exploration of several real-world high-dimensional datasets.

  • 429.
    Collin, Alicia
    Linnaeus University, Faculty of Technology, Department of Informatics.
    Informationskvalité: En studie om vilka informationskvalitativa faktorer som påverkar användarupplevelsen i en e-handelskontext2019Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    This study has looked into which information quality factors that affect the users’ experience in the context of e-commerce. The study is based on scientific articles and literature within the areas of information quality and e-commerce. There were also a separate data collection where six informants participated. These were asked to answer interview questions and carry out a user test on an existing e-commerce website. The tasks in the user test were presented in the form of scenarios were the informant had to carry out various actions that are common within e-commerce.

    The answers from the own data collection was then mapped to be able to identify which factors that affect the user's experience of information quality. These were then compared to the factors identified in previous studies.

    The result of the data collection in question shows that Trust, Informations architecture, Information and Usability are important information quality factors. A result that is in line with previous research.

  • 430.
    Collin, Imad
    Linnaeus University, Faculty of Technology, Department of Computer Science.
    Quality Assessment of Web Pages: is it worth the trouble?2017Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
  • 431.
    Conrad, Jan
    Växjö University, Faculty of Mathematics/Science/Technology.
    Flexible User Interface - FLUSI2006Independent thesis Advanced level (degree of Master (One Year)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    The cellular phone network has been increasing rapidly during the last years. For many people the mobile phone has become an every day gadget with a wide performance and functional range. The usage of technologies like GPRS, HSCSD, EDGE and UMTS as well as the bandwidth of networks and consequently the connectivity of the phones has also increased persistently. Coming along with that, three technologies, which are ubiquitous or pervasive computing, mobile and wireless networks and location-based technologies, are making rapid progress.

    The aim of this thesis is to offer an architecture for a location-based user interface in the intersection of the three technologies mentioned above. The system should work with a minimum of special hardware requirement. Not to overload the user with information, the user interface should be adaptable, context-aware and location-based. The context-data should remain extendible and adaptable.

  • 432. Coquillart, Sabine
    et al.
    Andujar, CarlosLaramee, Robert S.Kerren, AndreasLinnaeus University, Faculty of Technology, Department of Computer Science.Braz, José
    GRAPP 2013 and IVAPP 2013: Proceedings of the International Conference on Computer Graphics Theory and Applications and International Conference on Information Visualization Theory and Applications2013Conference proceedings (editor) (Refereed)
  • 433.
    Cosic, Admir
    et al.
    Linnaeus University, Faculty of Science and Engineering, School of Computer Science, Physics and Mathematics.
    Antonio, Michel
    Linnaeus University, Faculty of Science and Engineering, School of Computer Science, Physics and Mathematics.
    Processförbättring med hjälp av TMMi-Modellen: Utvärdering av en testprocess på ett medelstort företag2012Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Storleken och komplexiteten på dagens system och applikationer ökar. Detta leder till att kraven på system och applikationer ökar också eftersom kunderna kräver av dagens system full funktionalitet inom olika typer av distribuerade miljöer. Kunder är inte bara intresserade av funktionerna i systemen och applikationerna, de förväntar sig också att systemet skall vara av god kvalitet. Av dessa skäl är det mycket viktigt att testa system och applikationer för att säkerställa att de uppfyller kundernas förväntningar. Däremot är det inte bara själva mjukvarans kvalitets frågor som organisationer behöver ha i åtanke, en lika viktig del är själva testprocessens kvalitet. För att öka testprocessens kvalitet  krävs det en utvärdering av processen. Utvärderingen identifierar processens styrkor, svagheter och möjligheter.

    I detta examensarbete har vi utvärderat tesprocessen på ett utvecklingsföretag. Utvärderingen har baserats på anvisningar och rekommendationer från TMMi-modellen, Test Maturity Model Integrated. Vi hade som mål att lyfta fram förbättringsförslag till företagets testprocess. Efter utvärderingen kom vi fram till vilken mognadsnivå verksamheten utifrån TMMi-modellen samt en mängd förbättringsförslag för att höja mognadsnivån på testprocessen.

  • 434.
    Covic, Mirjana
    et al.
    Växjö University, Faculty of Mathematics/Science/Technology, School of Mathematics and Systems Engineering.
    Kohler, Thomas
    Växjö University, Faculty of Mathematics/Science/Technology, School of Mathematics and Systems Engineering.
    IT security for small and medium-sized enterprises: A didactical concept of a dynamical questionnaire2009Independent thesis Advanced level (degree of Master (One Year)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    This master thesis has been written at the School of Mathematics and System Engineering (MSI) at Växjö University in the field of computer science. IT security has become one of the main topics of every enterprise since they all use information technology in their business. Investments have to be done in order to achieve a high protection status of the IT environments. Specially small and medium-sized enterprises need more knowledge and advisory how to handle their IT security. This thesis analyses management tools that have the goal to improve the IT security. The second and main part of the thesis is the design of a tool that should helps to solve the described problems.

  • 435.
    Creelman, Alastair
    Linnaeus University, Faculty of Health, Social Work and Behavioural Sciences, School of Education, Psychology and Sport Science.
    Public libraries as learning spaces2012In: Scandinavian library quarterly, ISSN 2001-3051, Vol. 45, no 1, p. 16-17Article in journal (Other (popular science, discussion, etc.))
    Abstract [en]

    The role of public libraries is changing rapidly and the rise of open education creates opportunities for them to be hubs for lifelong learning. Alastair Creelman, blogger and e-learning analyst at Linnaeus University in Kalmar, examines some of the key current trends in net-based learning and discusses the future role of public libraries in this context.

  • 436.
    Csonka, Kamilla
    Linnaeus University, Faculty of Science and Engineering, School of Computer Science, Physics and Mathematics.
    Användaracceptans vid systemimplementering.2012Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    User acceptance is an important part of all system development projects and is also a very easily influenced variable for a successful implementation. That is why it is important to have an overview of those factors that could influence the user acceptance negatively, one of those factors being delay. This thesis highlights the cohesion between a delayed project and its influence over the user acceptance. By letting a study group answer a survey formed by the Technology Acceptance Model, I have gathered the generalized opinion of the group. The results show that delay as a variable does not influence the user acceptance of this case study.

  • 437.
    Dacke, Filip
    Växjö University, Faculty of Mathematics/Science/Technology, School of Mathematics and Systems Engineering.
    Metod för systemutveckling till småföretag2006Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    System development methods have existed to develop systems and

    programs since the waterfall model was introduced when IT was called

    data processing. There have been a number of methods since that day,

    some of them are still used. A common denominator for the most software

    development methods are that they where all developed to support software

    engineering to complex system in large organizations. Within the Swedish

    society there were over 890 000 small businesses (0-49 employed) in year

    2005 according to statistiska centralbyrån. It’s no secret that the small

    businesses are very important to Sweden. To assure survival when the

    competition gets harder the small businesses must the entire time look over

    there business processes. Sometimes this means that they need new custom

    made IT systems. This thesis will examine possible system development

    methods for small Swedish businesses and adopt one method to fit small

    business software development.

  • 438.
    Dadzie, Aba-Sah
    et al.
    KMi, The Open University, UK.
    Müller, Maximilian
    Linnaeus University, Faculty of Technology, Department of Media Technology.
    Alissandrakis, Aris
    Linnaeus University, Faculty of Technology, Department of Media Technology.
    Milrad, Marcelo
    Linnaeus University, Faculty of Technology, Department of Media Technology.
    Collaborative Learning through Creative Video Composition on Distributed User Interfaces2016In: State-of-the-Art and Future Directions of Smart Learning / [ed] Li, Y., Chang, M., Kravcik, M., Popescu, E., Huang, R., Kinshuk, Chen, N.-S., Springer, 2016, 1, p. 199-210Chapter in book (Refereed)
    Abstract [en]

    We report two studies that fed into user-centred design for pedagogical and technological scaffolds for social, constructive learning through creative, collaborative, reflective video composition. The studies validated this learning approach and verified the utility and usability of an initial prototype (scaffold) built to support it. However, challenges in interaction with the target technology, multi-touch tabletops, impacted ability to carry out prescribed learning activities. Our findings point to the need to investigate an alternative approach and informed redesign of our scaffolds. We propose coupling of distributed user interfaces, using mobile devices to access large, shared displays, to augment capability to follow our constructive learning process. We discuss also the need to manage recognised challenges to collaboration with a distributed approach.

  • 439.
    Dahal, Abhinav
    et al.
    Linnaeus University, Faculty of Science and Engineering, School of Computer Science, Physics and Mathematics.
    Saheb, Azal
    Linnaeus University, Faculty of Science and Engineering, School of Computer Science, Physics and Mathematics.
    Architectural Agents2011Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    In a complex and ever changing software environment, controlling and coordinating asoftware system's architecture and its components have become an almost an impossibletask. It takes a lot of effort from a developer and even then it is not a foolproof plan. In thisMasters thesis, we introduce Architectural Agents. Architectural agents are specializedconfigurable components. They are the key elements that make a software environmentself-adaptive. Should there be any problem in the software, the architectural agents havingmonitored the software architecture can know which component is having the problem andfix it.This thesis aims towards making software self-adaptive by using Architectural Agents.This can be achieved by combining two frameworks namely, Prism-MW and JADE. Eachof these frameworks have their own property that contribute towards achieving the goal ofthe thesis. Prism-MW decomposes a software into separate and easily manageablecomponents. JADE on the other hand, creates agents. Combining these two frameworksmeans using the agents to control the software components. This will make the softwareenvironment self-adaptive.We support our claims and theories by practically proving them.

  • 440.
    Dahl, Andreas
    et al.
    Linnaeus University, Faculty of Technology, Department of Computer Science.
    Nylander, Kristofer
    Linnaeus University, Faculty of Technology, Department of Computer Science.
    Differences in security between native applications and web based applications in the field of health care2015Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Developing native applications for different platforms with different resolutions and screen sizes is both time consuming and costly. If developers were able to develop one web based application which can be used on multiple platforms, yet retain the same level of security as a native application, they would be able to reduce both development time and costs.

    In this thesis we will investigate the possibilities of achieving a level of security in a web-based application that can equal that of a native application, as well as how to develop an application that uses the Mina Vårdkontakter (My Healthcare Contacts) framework.

  • 441.
    Dahlstein, Marcus
    et al.
    Växjö University, Faculty of Mathematics/Science/Technology, School of Mathematics and Systems Engineering.
    Nilsson, Mats
    Växjö University, Faculty of Mathematics/Science/Technology, School of Mathematics and Systems Engineering.
    Datasäkerhet: Hur man skyddar sig mot interna hot2005Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    As the companies of today are good at protecting themselves against external threats, but are having problems with internal threats, we focused on how information can be protected from ending up in the wrong hands. First and foremost to protect information from employees who might steal it and sell it to another company. Since the security investments needed are connected to the financial costs of implementing them we have tried to create a balance between the investments needed and the cost of implementing them. The different kinds of protection needed are first and foremost protection to make data less accessable, passwords and traceability. While it is hard for us to estimate the amount of money a company lose by the hour when the production stands still, we have not been able to use any of the excising models to calculate the profit of installing countermeasures. We have, however, been able to find a model that works excellent for the average company who is beginning to install computer security.

  • 442.
    Dahl-Örn, Rasmus
    Linnaeus University, Faculty of Technology, Department of Informatics.
    Samarbete och kommunkation inom onlinebaserade prototypverktyg: En studie kring funktionalitet och behov2013Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Distansarbete blir allt vanligare vilket innebär att kommunikation och samarbete sker via samverkande system som förmedlas via datorn. Inom området cscw (computer-cooperative work) bedrivs forskning som berör kommunikation och samarbete samt forskning kring förståelse för hur människor arbetar i grupper och engagerar sig i gruppaktiviteter. Även samhällsvetenskap, psykologi, systemvetenskap och människa- datorinteraktion är en del av cscw. Studien i denna rapport ämnade därför undersöka hur kommunikation och samarbete i onlinebaserade prototypverktyg kan underlättas. Studien har genom ett kvantitativt angreppssätt använt och applicerat existerande teorier inom ämnet för cscw. Genom resultatet från en enkätundersökning skapades en anpassad kontextmatris och samarbetsmekanismer som låg till grund för kommande utvärderingar. Kontextmatrisen innehåller sammanhang för inom vilka samarbete sker. Den är uppdelad i två dimensioner som består av tid och rum. Dessa delas sedan upp i olika plats, samma plats, asynkron och synkron kommunikation. Samarbetsmekanismerna består av handlingar inom ett samarbetsprojekt som gruppmedlemmarna måste genomföra för att utföra och sammanställa en uppgift. Genom ett kvalitativt angreppssätt utifrån scenariospecifikationer och aktivitetsdiagram skapades och genomfördes fyra utvärderingar mot tre olika onlinebaserade prototypverktyg. Studien visar tydligt på funktionalitet och behov som underlättar samarbete och kommunikation inom onlinebaserade prototypverktyget. Från den empiriska undersökningen framställdes en kontextmatris, anpassade samarbetsmekanismer samt behov och funktionskrav. Dessa resultat är av betydelse vid utvecklande och analysering av onlinebaserade prototypverktyg i förhållande till samarbete och kommunikation. Funktionalitet som är av betydelse är att verktyget ska tillgodose användaren med rätt sorts kommunikation, tillgodose funktionalitet som gör det möjligt att se vilka inom gruppen som befinner sig i verktyget, dess arbetsyta och vad varje gruppmedlemmarna arbetar med. Vidare är det också av stor vikt att kunna dela med sig av material till andra som har producerats inom verktyget men också ha möjlighet att dela och lagra material i verktyget som producerats i andra programvaror. 

  • 443.
    Dai, Jingya
    Växjö University, Faculty of Mathematics/Science/Technology, School of Mathematics and Systems Engineering.
    Implement BPR and CPI to optimize the process of getting medicine in pharmacy: a comparison between Sweden and China2007Independent thesis Advanced level (degree of Master (One Year)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    This report generally focuses on the process of getting medicine from the pharmacy in the hospital. The processes are different in Sweden and in China due to the different concrete conditions. Compared with the Swedish process the Chinese flow lags fairly far behind. To optimize the Chinese process by taking advantage of the Swedish process is the intention of this report; it also gives the advice on how to improve the performance for the Swedish process. By comparing the multiple theories for process improvement, I used Business Process Reengineering (BPR) theory to reengineer the Chinese process and used Continues Process Improvement (CPI) theory to ameliorate the Swedish process. The differences between BPR and CPI are also revealed in this report.

  • 444.
    Dalipi, Fisnik
    et al.
    Norwegian University of Science and Technology (NTNU), Norway.
    Ferati, Mexhid
    Oslo and Akershus University College of Applied Sciences (HiOA), Norway.
    Yayilgan, Sule Yildirim
    Norwegian University of Science and Technology (NTNU), Norway.
    User Interface Evaluation of a Ski Injuries Management System2017In: Advances in Human Factors in Sports and Outdoor Recreation, Orlando, USA: Springer, 2017, p. 213-222Conference paper (Refereed)
    Abstract [en]

    Although many technological devices and solutions to enhance the skiing experience are now available for skiers, skiing sometimes could turn to be potentially dangerous. The speed of movement, environment unpredictability, and variable weather conditions, among others, can contribute to some of the most common skiing injuries that skiers incur. In this paper, we conduct an interface prototype evaluation of a ski injury registration system architecture that is already developed. This system will improve the communication from the ski resort to the medical center, in case an injury has occurred. The results of the interface evaluation indicate that the ski patrollers showed very positive attitude and experience with this prototype. Furthermore, the post-task and SUS (System Usability Scale) question results showed very high score for all participants, indicating that locating the body parts and the right injury was very easy using the interface.

  • 445.
    Dalipi, Fisnik
    et al.
    State University of Tetova, Makedonia.
    Idrizi, Florim
    State University of Tetova, Makedonia.
    Kamberi, Lazim
    State University of Tetova, Makedonia.
    Determinants of e-business and ICT adoption among SMEs in Macedonia: An application of TOE Framework2011In: International Symposium on Computing in Informatics and Mathematics; 1st International Symposium on Computing in Informatics and Mathematics, International Symposium on Computing in Informatics and Mathematics , 2011, p. 111-124Conference paper (Refereed)
    Abstract [en]

    Research has demonstrated that firms using e-business culminate with considerable returns through efficiency improvement, inventory reduction, sales increase,customer relationship enhancement, new market penetration, and ultimatelyfinancial returns. However, there is little systematic research in terms of e-businessadoption patterns in firms using TOE (Technology-Organization-Environment)framework. This paper illustrates the potential of adoption and use of ICT and ebusinessapplications in small and medium sized enterprises (SMEs) in Macedonia.In the paper we present preliminary results of a survey of around 60 SMEs. In thisstudy we explore several factors enabling or impeding the successful adoption anduse of e-business and ICT by Macedonian SMEs. Based on technologyenvironment-organization (TOE) theory, three aspects influence e-business adoption: technological context (we explore technology integration among firms,more specifically the type of ICT adoption and applications), organizational context(we try to discover the motivations to invest in ICT, the benefits and barriers of ICTand e-business in particular) and environmental context (here we investigate trusted sources of IT advice, challenges of implementations and competitive pressure). Wefind that SMEs are generally satisfied with their investment in ICT but they are concerned about the cost of such investments and are uncertain about the business benefits, failing to recognize ICT's strategic potential to increase business flexibility, to increase productivity and to support globalization. Besides the concern about the ICT related cost, other major obstacles in adopting ICT were lackof internal ICT capabilities and lack of information about selecting, implementing and evaluating suitable ICT solutions. Our findings have important implications for policy aimed at ICT adoption and use by SMEs and will provide a foundation forfuture research by helping policy makers to understand, assist and support the SME sector.

  • 446.
    Dalipi, Fisnik
    et al.
    Linnaeus University, Faculty of Technology, Department of computer science and media technology (CM), Department of Computer Science. Tetovo University, Macedonia.
    Idrizi, Florim
    Tetovo University, Macedonia.
    Kurti, Arianit
    Linnaeus University, Faculty of Technology, Department of computer science and media technology (CM), Department of Computer Science. RISE Interactive, Norrköping.
    Exploring the Impact of Social Learning Networks in M-Learning: a Case Study in a University Environment2017In: Learning and Collaboration Technologies Novel Learning Ecosystems: 4th International Conference, LCT 2017, Held as Part of HCI International 2017, Vancouver, BC, Canada, July 9-14, 2017, Proceedings, Part I / [ed] Panayiotis Zaphiris, Andri Ioannou, Vancouver: Springer, 2017, p. 189-198Conference paper (Refereed)
    Abstract [en]

    The high penetration of Internet, advances in mobile computing and the rise of smartphone usage has largely enhanced the use of social media in education. Moreover, nowadays social learning network (SLN) platforms have become an important educational technology component in higher education. Despite the fact that SLN are becoming ubiquitous in the higher education, there is relatively not much empirical work done investigating their purposefulness when integrated into the learning activities. This paper aims at exploring the impact of SLN in mobile assisted learning and to provide empirical evidence as to what extent SLN and mobile learning (M-learning) can improve the learning experiences. For this purpose, a quantitative experimental approach is used, and two survey questionnaires were conducted. The data is collected from 120 participants. In this study, we focus our intention on Edmodo and Kahoot platforms, which represent social media based tools that aid and support collaboration, knowledge sharing and group activities among students. Computer science students of the Tetovo University (TU) used these tools throughout one semester. From this study, there is significant evidence that students are very interested to use this SLN in a M-learning setting, indicating that SLN can be one of the promising pedagogical technologies that could contribute effectively to learning process.

  • 447.
    Dalipi, Fisnik
    et al.
    Linnaeus University, Faculty of Technology, Department of computer science and media technology (CM), Department of Computer Science. Univ Coll Southeast Norway, Norway.
    Imran, Ali Shariq
    Norwegian Univ Sci & Technol NTNU, Norway.
    Kastrati, Zenun
    Norwegian Univ Sci & Technol NTNU, Norway.
    MOOC Dropout Prediction Using Machine Learning Techniques: Review and Research Challenges2018In: Proceedings of 2018 IEEE Global Engineering Education Conference (EDUCON) - Emerging Trends and Challenges of Engineering Education, IEEE, 2018, p. 1007-1014Conference paper (Refereed)
    Abstract [en]

    MOOC represents an ultimate way to deliver educational content in higher education settings by providing high-quality educational material to the students throughout the world. Considering the differences between traditional learning paradigm and MOOCs, a new research agenda focusing on predicting and explaining dropout of students and low completion rates in MOOCs has emerged. However, due to different problem specifications and evaluation metrics, performing a comparative analysis of state-of-the-art machine learning architectures is a challenging task. In this paper, we provide an overview of the MOOC student dropout prediction phenomenon where machine learning techniques have been utilized. Furthermore, we highlight some solutions being used to tackle with dropout problem, provide an analysis about the challenges of prediction models, and propose some valuable insights and recommendations that might lead to developing useful and effective machine learning solutions to solve the MOOC dropout problem.

  • 448.
    Dalipi, Fisnik
    et al.
    Linnaeus University, Faculty of Technology, Department of computer science and media technology (CM), Department of Computer Science.
    Kurti, Arianit
    Linnaeus University, Faculty of Technology, Department of computer science and media technology (CM), Department of Computer Science. RISE Interactive Institute.
    Zdravkova, Katerina
    Ss. Cyril and Methodius University, Macedonia.
    Ahmedi, Lule
    University of Prishtina, Serbia.
    Rethinking the conventional learning paradigm towards MOOC based flipped classroom learning2017In: 16th International Conference on Information Technology Based Higher Education and Training (ITHET), 10-12 June, 2017, Ohrid, Macedonia, IEEE, 2017, article id 8067791Conference paper (Refereed)
    Abstract [en]

    The recent proliferation of Massive Open Online Courses (MOOCs) has initiated a plethora of research endeavors revolving around new pedagogical methods in higher education. Integrating MOOCs in blended learning can be beneficial in different ways for both learners and instructors. In this position paper, we aim to provide a brief and comprehensive review about the challenges that higher education institutions in Macedonia and Kosovo face while coping with the new trends of flexible or blended learning. Moreover, after describing some real cases of MOOC based flipped classroom learning, we also provide some recommendations in order to enhance and enrich learning experience by employing innovative pedagogies.

  • 449.
    Dalipi, Fisnik
    et al.
    Tetovo State University, Makedonien.
    Ninka, Ilia
    Tirana University, Albanien.
    Shej, Ajri
    Tetovo State University, Makedonien.
    Applying semantically adapted vector space model to enhance information retrieval2012In: ICT Innovations 2012 Web Proceedings: Poster Session / [ed] S. Markovski, M. Gusev, Ohrid: ICT ACT , 2012, p. 573-575Conference paper (Refereed)
    Abstract [en]

    Abstract. While most enterprise data is unstructured and file based, the need for access to structured data is increasing. In order to reduce the cost for finding information and achieve relevant results there is a need to build a very complex query which indeed is a serious challenge. Data volumes are growing at 60% annually and up to 80% of this data in any organization can be unstructured. In this paper we focus on describing the evolution of some modern ontology-based information retrieval systems. Further, we will provide a brief overview of the key advances in the field of semantic information retrieval from heterogeneous information sources, and a description of where the state-of-the-art is at in the field. Finally, we present and propose a novel use of semantic retrieval model based on the vector space model for the exploitation of KB (Knowledge Base) to enhance and support searching over robust and heterogeneous environments.

  • 450.
    Dalipi, Fisnik
    et al.
    Norwegian University of Science and Technology (NTNU), Norway.
    Yayilgan, Sule Y.
    University of Science and Technology (NTNU), Norway.
    Imran, Ali S.
    University of Science and Technology (NTNU), Norway.
    Kastrati, Zenun
    University of Science and Technology (NTNU), Norway.
    Towards Understanding the MOOC Trend: Pedagogical Challenges and Business Opportunities2016In: Learning and Collaboration Technologies. LCT 2016., Toronto: Springer, 2016, p. 281-291Conference paper (Refereed)
    Abstract [en]

    Undoubtedly, MOOCs have the potential to introduce a new wave of technological innovation in learning. In spite of the great interest among the educators and the general public MOOCs have generated, there are some challenges that MOOCs might face when it comes to examining and determining the best pedagogical approaches that MOOCs should be based on. Moreover, MOOCs are facing also challenges towards building a consistent business model. The main objective of this paper is to shed more light on the MOOCs phenomenon, by analyzing and discussing some benefits and drawbacks of MOOCs from the pedagogical and business perspectives. Therefore, in this paper we provide an in-depth analysis of MOOCs challenges and opportunities towards determining pedagogical innovations. We also analyze current trends of MOOCs expansion to create new educational markets by overpassing the bricks-and-mortar educational institutions. To do so, we conduct a SWOT analysis on MOOCs. Finally, we provide possible directions and insights for future research to better understand how MOOCs can be improved to lead to greater innovations in the higher education landscape to answer the needs of a knowledge-based economy.

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