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  • 451.
    Svensson, Bo
    et al.
    University West, Department of Engineering Science, Division of Automation Systems.
    Danielsson, Fredrik
    University West, Department of Engineering Science, Division of Automation Systems.
    P-SOP -€“ A multi-agent based control approach for flexible and robust manufacturing2015In: Robotics and Computer-Integrated Manufacturing, ISSN 0736-5845, E-ISSN 1879-2537, Vol. 36, p. 109-118, article id 1301Article in journal (Refereed)
    Abstract [en]

    In a truly flexible manufacturing system the description of the control strategy must be updated every day. Hence, a new way to handle changes in the environment down to control system deployment and production is required. This paper presents a novel approach, based on P-SOP, to handle multi-agent based control and verification. The P-SOP approach addresses flexibility, robustness and deployment in the best possible manner with the least waste of time and effort. P-SOP includes a description language where the control strategy based on actual circumstances easily can be defined. Based on the description multi-agents, to control the manufacturing, are automatically generated. An industrial advantage is that the multi-agent generator creates IEC 61131-3 PLC code that can be executed on standard PLC’s. This feature eliminates the need for experts in PLC programming and reduce deployment time to become more efficient. Hence, this flexibility enables small series down to one off production in a competitive way. With multi-agent control it is also possible to handle rebalancing due to market changes, scheduling of available humans, introduction of new part types, and rerouting due to a machine break down or planned service. The generated agents are not optimised for a final solution with specific timings. All decisions are made on-line and the generated solution adapts to the circumstances that arise. With the P-SOP multi-agents it is easy to manually remove or introduce parts to the manufacturing cell without disturbing the system, e.g. for manually random inspections, removal of parts due to restart. The formulated description language and the multi-agent generator has been successfully tested and evaluated in an industrial environment.

  • 452.
    Svensson, Jonas
    et al.
    University West, Department of Economics and IT, Division of Computer Engineering.
    Bergman, Joel
    University West, Department of Economics and IT, Division of Computer Engineering.
    Utveckling av en metod för att implementera IPv6 i en existerande nätverksmiljö2011Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    This report began with the fact that many companies and organizations today do not have any or little knowledge about IPv6 and what it means, nor do they know how to implement it. At the time of writing there were no complete method for how an analysis of a network were done, what was important to think on and which techniques were available.

    To ease future transitions to IPv6, we decided to develop a general method that a user could follow step by step, with instructions for what to think on at each step. The method also gives examples on how the user could do an analysis and examinations, and it eventually leads to a solution based on their needs. The method answers the question "what does a company need to do to be able to implement IPv6 in an already existing network?"

    The transition to IPv6 is happening and many techniques is still in development. To be able to present solutions that work with different needs, research in IP version four, version six and in transfer techniques were done as well.

    A set of transfer techniques was chosen and set up in a lab network where IPv6 functionality was verified. To develop a method that covered most of the common scenarios, the question were discussed with Empir AB, a company that works with IT solutions that hosts their own services. Their network was analyzed and the result was the foundation for the method.

    Since all techniques in the method were tested in the lab network, the IPv6 functionality was verified by testing different services over the network. The tests showed that it was possible to implement IPv6 after a step by step model. The result of this work can be used to initiate and follow through with a transition to IPv6 since the user have a method to follow, recommendations to what needs to be done and proposed solutions that can be implemented after instructions.

  • 453.
    Svensson, Lars
    University West, Department of Economics and IT, Division of Computer Science and Informatics.
    Me, myself and Genre : Bridging IS Design Theory and Distance Educational Practice withTechno-Pedagogical Genres 2006In: 2nd International Workshop on Digital Genre, Halmstad, June 15-16, 2006, Halmstad University , 2006Conference paper (Other academic)
  • 454.
    Svensson, Lars
    et al.
    University West, Department of Economics and IT, Division of Computer Science and Informatics.
    Bernheim, Bo-Göran
    Volvo Aero.
    Lundin, Johan
    Gothenburg university.
    Lundh-Snis, Ulrika
    University West, Department of Economics and IT, Division of Computer Science and Informatics.
    Pareto, Lena
    University West, Department of Economics and IT, Division of Media Production.
    Supporting Competent Acting in the new Workplace2008In: Proceedings of E-Learn2008: World Conference on E-Learning in Corporate, Government, Healthcare, and Higher Education / [ed] Curtis J. Bonk, Mimi Miyoung Lee & Tom Reynolds, Las Vegas, 2008, p. 3934-3941Conference paper (Refereed)
  • 455.
    Svensson, Lars
    et al.
    University West, Department of Informatics and Mathematics.
    Lundh Snis, Ulrika
    University West, Department of Informatics and Mathematics.
    Designing large scale work-integrated e-learning2005In: WSEAS Transactions on Information Science and Applications, ISSN 1790-0832, E-ISSN 1790-0832, Vol. 2, no 12, p. 2281-2287Article in journal (Refereed)
    Abstract [en]

    Large-scale e-learning initiatives are increasingly becoming an important strategy for organization-wide competence development projects. Such ventures are often primarily motivated by an ambition to cut costs and reduce the time between the identification of an organizational need and the launch of the educational initiative that addresses that need. However, there is a growing body of research that identifies several problems and obstaclesattacted to work-integrated e-learning. This paper reports from a large-scale e-learning initiative where a nation wide project was launched to address the challenges raised by geographical information systems to the public administrations of Sweden. The analysis identifies two interrelated challenges for large scale e-learning projects: Heterogeneity of participant and the situated nature of practice. It is concluded that these challenges needs to be addressed with a techno-pedagogical design approach where technological and pedagogical aspects are closely integrated with the existing and the future work practices.

  • 456.
    Svensson, Lars
    et al.
    University West, Department of Economics and IT, Division of Computer Science and Informatics.
    Lundin, Johan
    University West, Department of Economics and IT, Division of Computer Science and Informatics.
    Lundh-Snis, Ulrika
    University West, Department of Economics and IT, Division of Computer Science and Informatics.
    Pareto, Lena
    University West, Department of Economics and IT, Division of Media Production.
    Vad gör dom duktiga duktiga?: Att artikulera kompetens i informationssystem och samtal2009In: Samhälle, teknik och lärande / [ed] Thomas Karlsohn, Stockholm: Carlsson , 2009, p. 104-121Chapter in book (Other academic)
  • 457.
    Svensson, Lars
    et al.
    University West, School of Business, Economics and IT, Divison of Informatics.
    Nilsson, Stefan
    University West, School of Business, Economics and IT, Division of Media and Design.
    Re-thinking the LMS: Designing for Engaged Collaboration2014In: Proceedings of Society for Information Technology & Teacher Education International Conference 2014 / [ed] M. Searson & M. Ochoa, Chesapeake, VA: AACE , 2014, p. 1702-1707Conference paper (Refereed)
    Abstract [en]

    While there has been extensive research done on technology supporting communication and interaction in online higher education, this research focus on the potential of new web development tools for designing educational technologies. With the recent advent and maturity of the HTML5-standard together with CSS3 and advanced javascript libraries such as jQuery andNode.js developers now have access to tools enabling them to create dynamic, web-based systemssupporting rich social interaction & collaboration between students & educators with features that were previously only available in proprietary applications. This paper reports from an ongoingresearch project utilizing a design research approach aimed at creating and evaluating such a tool.

  • 458.
    Svensson, Lars
    et al.
    University West, Department of Economics and IT, Division of Computer Science and Informatics.
    Östlund, Christian
    University West, Department of Economics and IT, Division of Computer Science and Informatics.
    Framing work-integrated e-learning with techno-pedagogical genres2007In: Journal of Educational Technology & Society, ISSN 1176-3647, E-ISSN 1436-4522, Vol. 10, no 4, p. 39-48Article in journal (Refereed)
  • 459.
    Svensson, M
    et al.
    University West, Department of Economics and IT, Division of Computer Science and Informatics.
    Ydenius, A
    University West, Department of Economics and IT, Division of Computer Science and Informatics.
    Christiernin, Linn
    University West, Department of Economics and IT, Division of Computer Science and Informatics.
    Christiernin, Stefan
    University West, Department of Economics and IT, Division of Computer Science and Informatics.
    UML: How to model user interfaces - An exploratory study2009In: Proceedings of the IADIS International Conference Informatics 2009, Part of the IADIS Multi Conference on Computer Science and Information Systems, MCCSIS 2009, Algarve, 2009, p. 59-66Conference paper (Other (popular science, discussion, etc.))
    Abstract [en]

    When creating software, people from many different areas are involved. To make them work efficiently together they need to communicate but communication requires a common language and common understanding. The Unified Modeling Language (UML) is often used as a common ground for understanding when modeling and designing software products. However, after practically working with many large projects we have found UML to have shortcomings in the area of modeling Graphical User Interface (GUI). There are many other ways to model GUIs but it could be beneficial to use a modeling method that the more technical developers are familiar with and also beneficial to be able to put in the interface into the framework of UML when it comes to drawing applications and code generation. In this study we first of all have investigated the possibility of adding GUI design to UML and then we have explored different solutions for what a GUI UML-diagram could look like and what problems there are with diagrams when it comes to visualizing objects. We have then put forward an idea for a GUI diagram or an UML extension; a graphical element diagram, and discussed its benefits and drawbacks. © 2009 IADIS.

  • 460.
    Svensson, Martin
    et al.
    University West, Department of Economics and IT.
    Christiernin-Gustafsson, Linn
    University West, Department of Economics and IT, Division of Computer Engineering.
    Mankefors-Christiernin, Stefan
    University West, Department of Economics and IT, Division of Computer Engineering.
    GED: A Graphical Element Diagram: UML for Interface development2010In: Proceedings of the 2010 International Conference on Software Engineering Research & Practice, SERP 2010 / [ed] Hamid R. Arabnia, Hassan Reza, Leonidas Deligiannidis, Juan Jose Cuadrado-Gallego, Vincent Schmidt, Ashu M. G. Solo, Las Vegas: CSREA Press , 2010, p. 38-44Conference paper (Refereed)
  • 461.
    Swenman, Patrick
    University West, Department of Economics and IT, Division of Media and Design.
    UGV - Kvalité räknas: En undersökning om skillnader mellan användargenererade videos på Youtube2016Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    In this thesis we analyzes the 75 largest user generated videos (UGV) at Youtube. The goal is to be able to place videos into categories by identifying differences and similarities between different videos. By doing this we'll be able to calculate if there is a difference in exposure value between different kind of videos. Our findings indicates that videos with a higher production quality may have a greater chance of being shared.

  • 462.
    Tallvid, Martin
    et al.
    Göteborgs universitet, Avdelningen för lärande, kommunikation och IT.
    Lundin, Johan
    Göteborgs universitet, Institutionen för tillämpad IT.
    Svensson, Lars
    University West, School of Business, Economics and IT, Divison of Informatics.
    Lindström, Berner
    University West, Department of Social and Behavioural Studies, Division for Educational Science and Languages. Göteborgs universitet.
    Exploring the Relationship between Sanctioned and Unsanctioned Laptop use in a 1:1 Classroom2015In: Educational Technology & Society, ISSN 1176-3647, E-ISSN 1436-4522, Vol. 18, no 1, p. 237-249Article in journal (Refereed)
    Abstract [en]

    The research reported in this article explores and discusses students' use of laptops in a 1:1 setting. A problem experienced by teachers is that the laptops are possible distractors and tempt students to engage in use that is not in line with the teacher's idea of what would be suitable in relation to the current assignment. Three annual surveys in combination with interviews and classroom observations were carried out in two Swedish secondary schools during a phase of the implementation of 1:1-laptops. The results show how that there is not a reciprocal correlation between sanctioned laptop use and unsanctioned laptop use. The findings also show that the students' unsanctioned use of laptops was relatively high, but stable throughout the duration of the three years. Furthermore, results show that the number of students who do not game or chat at all has increased every year. The findings have implications for the discussions concerning the use of personal laptops in secondary schools.

  • 463.
    Tano, Ingrid
    University West, Department of Engineering Science, Division of Natural Sciences and Electrical and Surveying Engineering. University West, Department of Engineering Science, Division of Mathematics, Computer and Surveying Engineering.
    Contributions to multivariate process capability indices2012Licentiate thesis, comprehensive summary (Other academic)
  • 464.
    Tano, Ingrid
    et al.
    University West, Department of Engineering Science, Division of Natural Sciences and Electrical and Surveying Engineering.
    Vännman, Kerstin
    Luleå Tekniska universitet.
    A multivariate process capability index based on the first principal component only2013In: Quality and Reliability Engineering International, ISSN 0748-8017, E-ISSN 1099-1638, Vol. 29, no 7, p. 987-1003Article in journal (Refereed)
  • 465.
    Tano, Ingrid
    et al.
    University West, Department of Engineering Science, Division of Computer, Electrical and Surveying Engineering.
    Vännman, Kerstin
    Umeå universitet, Umeå, Sverige.
    Comparing Confidence Intervals for Multivariate Process capability Indices2012In: Quality and Reliability Engineering International, ISSN 0748-8017, E-ISSN 1099-1638, Vol. 28, no 4, p. 481-495Article in journal (Refereed)
    Abstract [en]

    Multivariate process capability indices (MPCIs) are needed for process capability analysis when the quality of a process is determined by several univariate quality characteristics that are correlated. There are several different MPCIs described in the literature, but confidence intervals have been derived for only a handful of these. In practice, the conclusion about process capability must be drawn from a random sample. Hence, confidence intervals or tests for MPCIs are important. With a case study as a start and under the assumption of multivariate normality, we review and compare four different available methods for calculating confidence intervals of MPCIs that generalize the univariate index Cp. Two of the methods are based on the ratio of a tolerance region to a process region, and two are based on the principal component analysis. For two of the methods, we derive approximate confidence intervals, which are easy to calculate and can be used for moderate sample sizes. We discuss issues that need to be solved before the studied methods can be applied more generally in practice. For instance, three of the methods have approximate confidence levels only, but no investigation has been carried out on how good these approximations are. Furthermore, we highlight the problem with the correspondence between the index value and the probability of nonconformance. We also elucidate a major drawback with the existing MPCIs on the basis of the principal component analysis. Our investigation shows the need for more research to obtain an MPCI with confidence interval such that conclusions about the process capability can be drawn at a known confidence level and that a stated value of the MPCI limits the probability of nonconformance in a known way. 

  • 466.
    Tano, Ingrid
    et al.
    University West, Department of Engineering Science, Division of Land Surveying and Mathematics.
    Vännman, Kerstin
    Umeå Universitet & Luleå tekniska universitet & Högskolan Väst.
    Multivariate Process Capability Indices—A New Principal Component Analysis Approach2011In: ENBIS1- Coimbra, Portogal, 2011Conference paper (Refereed)
    Abstract [en]

    Often the quality of a process is determined by several correlated quality characteristics. In such cases the quality characteristic should be treated as a vector and a number of different multivariate process capability indices (MPCI:s) have been developed for such a situation. One of the existing MPCIs described in the literature is based on principal component analysis (PCA). The idea behind this MPCI is to do a PCA and consider only the first few principle components that explain the main part of the variability. Then one of the well-known univariate process capability indices is applied to each selected principle component and thereafter the univariate process capability indices for the selected principle components are combined to one MPCI. In order define this MPCI the tolerance region for the quality characteristic vector is transformed to a separate specification interval for each principal component. Recently it was shown that this transformation of the tolerance region into separate specification intervals is done in an improper way. And it is far from obvious how to obtain the individual specification limits for each selected principal component when the transformation is properly made. This problem gets complicated for 2 principal components and even worse for more than 2 principal components. We propose a new method based on PCA that circumvent these difficulties for the case when the tolerance region is a hyper-rectangular. This method first transforms the original data in a suitable way. Then PCA is done on the transformed data and it is shown that only the first principal component is needed to deem a process as capable or not at a stated significance level. Hence, a multivariate situation is transferred into a univariate situation and well-known theory for univariate process capability indices can be used to draw conclusions about the process capability. The properties of this method are investigated through a simulation study.

  • 467.
    Tenzer, Robert
    et al.
    Wuhan University, Sch Geodesy & Geomat, Key Lab Geospace Environm & Geodesy, Wuhan 430072, Peoples R China.
    Eshagh, Mehdi
    University West, Department of Engineering Science, Division of Natural Sciences and Electrical and Surveying Engineering.
    Global Sub-Crustal Stress Field2016In: Geostatistical and Geospatial Approaches for the Characterization of Natural Resources in the Environment / [ed] Raju, N. Janardhana, Springer International Publishing , 2016, p. 461-465Chapter in book (Other academic)
    Abstract [en]

    The sub-crustal stress has been traditionally computed using the Runcorn's formulae. This method allows computing the stress field only with a very limited spectral resolution. To overcome this problem, we apply a new method of computing the sub-crustal stress components based on utilizing the stress function with a subsequent numerical differentiation. This method increases the (degree-dependent) convergence domain of the asymptotically-convergent series and consequently allows evaluating the stress components to a higher spectral resolution compatible with currently available global crustal models. This method also facilitates the variable Moho geometry, instead of assuming only a constant Moho depth in the Runcorn's formulae. The crustal thickness and the sub-crustal stress are then determined directly from gravity and (seismic) crustal structure models. The numerical result reveals that the largest intensity of the sub-crustal stress occurs mainly along seismically active convergent tectonic plate boundaries, particularly along oceanic subduction zones and continent-to-continent collision zones.

  • 468.
    Tenzer, Robert
    et al.
    Wuhan University, Sch Geodesy & Geomat, Key Lab Geospace Environm & Geodesy, Wuhan 430072, Peoples R China..
    Eshagh, Mehdi
    University West, Department of Engineering Science, Division of Computer, Electrical and Surveying Engineering.
    The Sub-Crustal Stress Field in the Taiwan Region2015In: Terrestrial, Atmospheric and Oceanic Science, ISSN 1017-0839, E-ISSN 2223-8964, Vol. 26, no 3, p. 261-268Article in journal (Refereed)
    Abstract [en]

    We investigate the sub-crustal stress in the Taiwan region. A tectonic configuration in this region is dominated by a collision between the Philippine oceanic plate and the Eurasian continental margin. The horizontal components of the sub-crustal stress are computed based on the modified Runcorn’s formulae in terms of the stress function with a subsequent numerical differentiation. This modification increases the (degree-dependent) convergence domain of the asymptotically-convergent series and consequently allows evaluating the stress components to a spectral resolution, which is compatible with currently available global crustal models. Moreover, the solution to the Vening Meinesz-Moritz’s (VMM) inverse isostasy problem is explicitly incorporated in the stress function definition. The sub-crustal stress is then computed for a variable Moho geometry, instead of assuming only a constant Moho depth. The regional results reveal that the Philippine plate subduction underneath the Eurasian continental margin generates the shear sub-crustal stress along the Ryukyu Trench. Some stress anomalies associated with this subduction are also detected along both sides of the Okinawa Trough. A tensional stress along this divergent tectonic plate boundary is attributed to a back-arc rifting. The sub-crustal stress, which is generated by a (reverse) subduction of the Eurasian plate under the Philippine plate, propagates along both sides of the Luzon (volcanic) Arc. This stress field has a prevailing compressional pattern.

  • 469.
    Tenzer, Robert
    et al.
    Wuhan University, The Key Laboratory of Geospace Environment and Geodesy, School of Geodesy and Geomatics,.
    Eshagh, Mehdi
    University West, Department of Engineering Science, Division of Computer, Electrical and Surveying Engineering.
    Jin, Shuanggen
    Shanghai Astronomical Observatory, Chinese Academy of Sciences, Shanghai, China .
    Martian sub-crustal stress from gravity and topographic models2015In: Earth and Planetary Science Letters, ISSN 0012-821X, E-ISSN 1385-013X, Vol. 425, p. 84-92Article in journal (Refereed)
    Abstract [en]

    The latest Martian gravity and topographic models derived from the Mars Orbiter Laser Altimeter and the Mars Global Surveyor spacecraft tracking data are used to compute the sub-crustal stress field on Mars. For this purpose, we apply the method for a simultaneous determination of the horizontal sub-crustal stress component and the crustal thickness based on solving the Navier–Stokes problem and incorporating the Vening Meinesz–Moritz inverse problem of isostasy. Results reveal that most of the Martian sub-crustal stress is concentrated in the Tharsis region, with the most prominent signatures attributed to a formation of Tharsis major volcanoes followed by crustal loading. The stress distribution across the Valles Marineris rift valleys indicates extensional tectonism. This finding agrees with more recent theories of a tectonic origin of Valles Marineris caused, for instance, by a crustal loading of the Tharsis bulge that resulted in a regional trusting and folding. Aside from these features, the Martian stress field is relatively smooth with only a slightly enhanced pattern of major impact basins. The signatures of active global tectonics and polar ice load are absent. Whereas the signature of the hemispheric dichotomy is also missing, the long-wavelength spectrum of the stress field comprises the signature of additional dichotomy attributed to the isostatically uncompensated crustal load of Tharsis volcanic accumulations. These results suggest a different origin of the Earth's and Martian sub-crustal stress. Whereas the former is mainly related to active global tectonics, the latter is generated by a crustal loading and regional tectonism associated with a volcanic evolution on Mars. The additional sub-crustal stress around major impact basins is likely explained by a crustal extrusion after impact followed by a Moho uplift.

  • 470.
    Tenzer, Robert
    et al.
    Wuhan Univ, Sch Geodesy & Geomat, Key Lab Geospace Environm & Geodesy, 129 Luoyu Rd, Wuhan 430079, Peoples R China, University of West Bohemia.
    Eshagh, Mehdi
    University West, Department of Engineering Science, Division of Computer, Electrical and Surveying Engineering.
    Shen, Wenbin
    Wuhan Univ, Sch Geodesy & Geomat, Key Lab Geospace Environm & Geodesy, 129 Luoyu Rd, Wuhan 430079, Peoples R China.
    The sub-crustal stress estimation in central Eurasia from gravity, terrain and crustal structure models2017In: Geosciences Journal, ISSN 1226-4806, Vol. 21, no 1, p. 47-54Article in journal (Refereed)
    Abstract [en]

    We investigate the horizontal stress field beneath crustal structures of central Eurasia. The numerical procedure applied for a simultaneous determination of the sub-crustal stress and the crustal thickness from the global gravity, terrain and crustal structure models is based on solving Navier-Stokes' problem which incorporates the inverse solution to the Vening Meinesz- Moritz's problem of isostasy. The numerical results reveal that a spatial distribution of the sub-crustal stress in this study area closely resembles the regional tectonic configuration comprising parts of the Eurasian, Indian and Arabian lithospheric plates. The maximum shear stress intensity is generated by a subduction of the Indian plate beneath the Tibetan block. The intra-plate tectonic configuration is marked by the stress anomalies distributed along major active strike-slip fault systems and sections of subduction which separate the Tibetan and Iranian blocks from the rest of the Eurasian plate. The most pronounced intra-plate stress anomalies are related with a subduction of the Eurasian plate beneath the Tibetan block. We also demonstrate that a prevailing convergent orientation of stress vectors agree with the compressional tectonism of orogenic formations (Himalaya and Tibet Plateau, Than Shan, Zargos and Iranian Plateau), while the extensional tectonism of continental basins (Tarim, Ganges-Brahmaputra, Sichuan) is manifested by a divergence of stress vectors.

  • 471.
    Thelander, Tomas
    University West, Department of Economics and IT.
    Alternatives to Native Mobile Development2013Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    This study looks at alternatives to creating applications for the common mobile operating systems using their respective native languages. Many proposals on how to bridge the differences of the platforms exist, with Applecerator Titanium being one of them, offering native applications for several platforms with one common code. Titanium development is here compared to standard Android development by creating identical applications using the two technologies and comparing the development processes. Titanium shows great promise and is able to perform the same operations as Java, with significantly less code required. The Titanium application also works on other platforms, but with some additional work required. The application created with Titanium does not match standard Android development when developing for a single platform. However, when developing for multiple platforms it may be a suitable alternative, at least when developing applications without advanced functionality

  • 472.
    Thielen, Julia
    et al.
    University West, Department of Economics and IT, Division of Media and Design.
    Goffe, Karin
    University West, Department of Economics and IT, Division of Media and Design.
    Internet of Things och marknadsföring: En kvalitativ studie om användning av Internet of Things inom marknadsföring2016Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The aim of this thesis is to identify the relationship between marketing and the Internet of Things. The goal is to contribute to increased knowledge for marketers and Internet of Things developers to understand the opportunities and challenges it is in creating marketing with the Internet of Things. To explore this matter we have used inductive approach and then made a qualitative interpretation of semistructured interviews. Through subjective selection we have selected five respondents in which everyone has actively worked with the Internet of Things in combination with marketing and there by possesses experience and knowledge of the subject. We have analyzed the answers of the respondents based on theories and concepts that involve content marketing, context marketing, interactive marketing, big data and privacy by design. The results of this thesis show that the combination of the Internet of Things and marketing is best suited to develop the customer relationship between consumers and businesses. To expand the interaction- and relationship perspective will be in focus, and to create value of the Internet of Things for the consumer. These opportunities can be summarized in the concept of "mother sees you," and that is precisely the concept that embody Internet of Things in marketing. Although the thesis demonstrates the possibilities of using the Internet of Things in marketing the challenge in getting the customer to feel confident to hand over data about themselves to the Internet of Things and see the benefits of doing so remains. To analyze the data that the customer creates and know how to use it is also a challenge for marketers and Internet of Things developers. The thesis discuss the risk that comes with the lack of framework of rules to lean on in the development of marketing with Internet of Things.

  • 473. Torkar, Richard
    et al.
    Mankefors-Christiernin, Stefan
    University West, Department of Technology, Mathematics and Computer Science, Division for Computer Science.
    Combining partition and random testing2006In: Proceedings of the IASTED International Conference on Software Engineering, as part of the 24th IASTED International Multi-Conference on APPLIED INFORMATICS, Innsbruck, 2006, p. 367-372Conference paper (Other (popular science, discussion, etc.))
    Abstract [en]

    In this paper we evaluate the potential in combining different testing methodologies. The evaluation indicates an increase in effectiveness when adding random testing to partition testing. At the same time, the increase in efficiency inevitably fades because of the added number of random test cases being executed. Nevertheless, the potential in an automation scheme for creating and executing test cases is visible, thus indicating that a future implementation combining the best of two worlds, i.e. partition and random testing could be pursued.

  • 474.
    Tu, Juei-feng
    et al.
    University West, Department of Engineering Science, Division of Subtractive and Additive Manufacturing. North Carolina State University, Department of Mechanical & Aerospace Engineering, Raleigh, United States.
    Rajule, Nilesh
    North Carolina State University, Department of Mechanical & Aerospace Engineering, Raleigh, United States.
    Liu, Yi
    North Carolina State University, Raleigh, Department of Material Science and Engineering,United States.
    Martin, James
    North Carolina State University, Department of Chemistry, Raleigh, United State.
    Nanostructure diffraction analysis of a copper/single walled carbon nanotube nanocomposite synthesized by Laser Surface Implanting2017In: Carbon, ISSN 0008-6223, E-ISSN 1873-3891, Vol. 113, p. 1-9Article in journal (Refereed)
    Abstract [en]

    A new wet process, denoted as Laser Surface Implanting (LSI), has been developed to synthesize a Copper-Single Wall Carbon NanoTube (Cu-SWCNT) metal nanocomposite by dispersing SWCNTs into molten copper, followed by rapid and non-equilibrium solidification to form the Cu-SWCNT nanocomposite such that dispersed SWCNTs could locked in positions without agglomerating into large clusters. However, the nanometer sizes of the SWCNT clusters inside this nanocomposite make it extremely difficult to obtain TEM images with discernable SWCNT clusters in the copper matrix. In this paper, TEM images and their diffraction patterns for annealed pure copper, quenched pure copper (by the same synthesis process without introducing SWCNTs), and Cu-SWCNT nanocomposite are compared. It is concluded that TEM images with discernable SWCNT clusters are rare. Therefore, diffraction patterns are better tools to identify SWCNTs within the copper matrix. The indexed diffraction patterns confirm that the copper fcc lattice is preserved. However, the Cu-SWCNT nanocomposite samples also exhibit ordered diffuse scattering, consisting of at least two polyhedra of diffuse-scattering bounded by the 110* and 200* family of reciprocal lattice planes, respectively. In addition several samples exhibit super-lattice Bragg diffraction indicative expanded unit cells. It thus appears that the SWCNTs are incorporated into the Cu matrix with precise arrangements commensurate with specific Cu lattice planes. 

  • 475.
    Ulasi, Micheal
    University West, Department of Economics and IT, Division of Computer Engineering.
    IP surveillance comparison between a Banana Pi camera system and a Raspberry Pi B+ camera system2015Independent thesis Basic level (university diploma), 5 credits / 7,5 HE creditsStudent thesis
    Abstract [en]

    This report discusses the implementation of IP surveillance technology using a decentralized architecture. The research focuses on the comparison between a Banana Pi camera system and a Raspberry Pi B+ camera system. This implies testing both systems as decentralized camera system. Both Pi camera systems, are running Raspbian OS and on them a CSI camera module is attached, and use their VLC media player application that is configured with HTTP/RTSP protocol to send video streams to clients on the LAN. The configuration uses either CIF and 1080P video resolution with motion and without motion respectively, at different intervals in the experiment.

    Information obtained from the research analyzes, revealed that the Raspberry Pi B+ is most suitable as a decentralized camera system than the Banana Pi is. It was possible for the Banana Pi to stream video using HTTP protocol and 1080P resolution with motion and without motion, but it could not use RSTP protocol and CIF resolution. Furthermore, the system crashed whenever the number of remote video streams on the Banana Pi were above than one connection. Although, during this one connection, the CPU usage was 100% and the memory usage was above 200MB. The bandwidth consumption was low, and the video quality was acceptable.The Raspberry Pie B+, processed most remote video streams and had most acceptable video qualities during the use of CIF resolution with motion and without motion, in contrast with use of 1080P with motion and without motion.

    Results also indicated that the Raspberry Pi B+ performed best with the use of CIF without motion, because it served all 50 remote video streams with 33.5% CPU usage. The Raspberry Pi B+, demonstrated poor performance during the 1080P with motion because it served just five remote video streams with 28.8% CPU usage. In overall, the bandwidth and memory usage increased simultaneously on the Raspberry Pi B+ as the number of remote video streams it served increased.

  • 476.
    Vanhatalo, E.
    et al.
    Luleå University of Technology, Quality Technology and Management.
    Bergquist, B.
    Luleå University of Technology, Quality Technology and Management.
    Vännman, Kerstin
    University West, Department of Engineering Science, Division of Natural Sciences and Electrical and Surveying Engineering.
    Towards improved analysis methods for two-level factorial experiments with time series responses2013In: Quality and Reliability Engineering International, ISSN 0748-8017, E-ISSN 1099-1638, Vol. 29, no 5, p. 725-741Article in journal (Refereed)
    Abstract [en]

    Dynamic processes exhibit a time delay between the disturbances and the resulting process response. Therefore, one has to acknowledge process dynamics, such as transition times, when planning and analyzing experiments in dynamic processes. In this article, we explore, discuss, and compare different methods to estimate location effects for two-level factorial experiments where the responses are represented by time series. Particularly, we outline the use of intervention-noise modeling to estimate the effects and to compare this method by using the averages of the response observations in each run as the single response. The comparisons are made by simulated experiments using a dynamic continuous process model. The results show that the effect estimates for the different analysis methods are similar. Using the average of the response in each run, but removing the transition time, is found to be a competitive, robust, and straightforward method, whereas intervention-noise models are found to be more comprehensive, render slightly fewer spurious effects, find more of the active effects for unreplicated experiments and provide the possibility to model effect dynamics. Copyright © 2012 John Wiley & Sons, Ltd. Copyright © 2012 John Wiley & Sons, Ltd.

  • 477.
    Vogel-Rödin, Rasmus
    University West, Department of Economics and IT, Divison of Informatics.
    Blivande lärares perspektiv på nätmobbning: En studie baserad på transcendental fenomenologi2015Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The impact of digital communication due the ever-expanding Internet, has made cyberbullying a more frequent focused on topic. Smartphones and tablets are today standard communication tools used by students. However, there are few policies or guidelines describing how the consequences of this use, should be handled, or approached. This transcendental phenomenological study focus on prospective teachers, experience and experiences of cyberbullying in school, were they play a critical role in working proactive. The prospective teachers described various different experiences regarding social network sites, Internet behavior, cyberbullying in school, and proactive work related to cyberbullying. The study shows that cyberbullying is a multidimensional phenomenon, were emotional, social and technical dimensions are described with detailed experiences. Finally, the study reveals prospective teachers common unawareness and insecurities generally in schools, due to lack of knowledge and education, on how they should act when faced with the problems cyberbullying creates.

  • 478.
    Voldberg, Jakob
    et al.
    University West, School of Business, Economics and IT, Division of Media and Design.
    Zontho, Erica
    University West, School of Business, Economics and IT, Division of Media and Design.
    Alla är hetero tills motsatsen är bevisad?: En semiotisk innehållsanalys av homosexualitet och queer i fem animerade amerikanska mainstream-långfilmer2018Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Historically, films from the mainstream American animation companies have had an almost non-existent representation of homosexual characters. Previously, it has been proven that the heteronormative has had a strong dominance in these companies. Considering the companies constantly produce new films, we aim to explore if this is still accurate. Within this context, this research offers an updated perspective on current representation by analyzing five animated feature films: Zootopia (2016), ParaNorman (2012), Storks (2016), Finding Dory (2016) and Frozen (2013). We have, with semiotics as a foundation, conducted a qualitative inductive content analysis of these films. By diverging from the heteronormative perspective which is deeply rooted in society we have viewed these films with a different approach. This research shows that the inclusion of homosexual couples and queer characters in animated films has increased. However, despite this increase the characters remain in small roles which are only included for a short time. This shows that the heteronormative still dominates in American mainstream animation. The clues which are given about the characters’ sexuality are subtle, resulting in them being easily overlooked.

  • 479.
    Wejnermark, Daniel
    et al.
    University West, Department of Engineering Science, Division of Computer and Electrical Engineering.
    Johansson, Jimmy
    University West, Department of Engineering Science, Division of Computer and Electrical Engineering.
    Hybrid med Frame Relay & MPLS2014Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    In 1989 the purpose of internet developed and the uses expanded [10]. Frame Relay was already in the 80's but was used as in the telecommunications industry. It was later developed substantially and started in the 90's standardized for computer communications [1,2]. Multiprotocol Label Switching (MPLS) began to develop in 1997, but was completed in the early 2000’s [4]. These two protocols are based on the same technology in which data packets are switched instead of routed.

    The report addresses three scenarios that are entirely possible problems that could occur in institutional networks. To solve these problems, measurements and tests are used to determine differences between the protocols. The protocols are compared not only in performance but also technically in order to decide what protocol and implementation that work best. Based on the results of the project, the best solution will be found and later implemented for each scenario and are presented in the discussion part.

  • 480.
    Wiberg, Olivia
    et al.
    University West, Department of Economics and Informatics.
    Ström, Frida
    University West, Department of Economics and Informatics.
    Publish on-the-go: en studie av mobilt socialt nätverkande hos early adopters2010Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    This thesis analyzes mobile social networking, with the use of smartphones. The purpose is to illustrate what subjective user values there are for the user type known as "early adopters". We look deeper into how society is changing due to how technology is advancing, and what consequences these changes bring us. Furthermore, we study a specific group of people, professionally engaged within the IT and Media business and therefore progressive in adopting new technologies. We study their use of the social network Facebook combined with Apple’s iPhone, and analyze the result of interview research and observations, using the theoretical model Theory of Consumption Values. This model is used to clarify different types of user-experienced values, such as functional values, social values, emotional values, epistemic values and conditional values. By analyzing the result, we find that the prime values among our participants concern availability and information. Distinguishing how social networking among our participants focuses on personal approach, the value of the personal trademark, and how knowledge and accessibility with new technologies and trends come to be extremely important within their profession.

  • 481.
    Willermark, Sara
    University West, School of Business, Economics and IT, Division of Media and Design.
    Technological Pedagogical and Content Knowledge: A Review of Empirical Studies Published From 2011 to 20162018In: Journal of educational computing research (Print), ISSN 0735-6331, E-ISSN 1541-4140, Vol. 56, no 3, p. 315-343Article in journal (Refereed)
    Abstract [en]

    Technological Pedagogical and Content Knowledge (TPACK) has been introduced asa conceptual framework for the knowledge domains teachers need to master to teach successfully using technology, and has drawn much attention across the educational field. Yet, the framework has been criticized for not being practically useful, due to inaccurate and insufficient definitions. To better understand the critics and the usefulness of the framework, an investigation of how the framework has been applied to show teacher TPACK is needed. This study is a systematic literature review of107 peer-reviewed journal articles concerning the use of TPACK in empirical studies published from 2011 to 2016. The study supplements previous review studies with more recent work on general characteristics of TPACK studies as well as contributes an analysis of how the framework has been applied to identify teacher TPACK inrecent literature. Findings show a variety of approaches and instruments to examine teacher TPACK. Most common is to identify teacher TPACK via self-reporting, while performance evaluations of teaching activities are rare. Additionally, the ways TPACK is operationalized as a measuring instrument are often implicit and make comparison of results difficult. Future directions for research are discussed.

  • 482.
    Wissmach, Toni
    University West, Department of Economics and IT, Division of Computer Engineering.
    USB 3 jämfört med 2.0: En jämförande studie om bulköverföringar2011Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Fokuset i denna studie ligger huvudsakligen på en av de fyra överföringstyper som USB 2 och 3 använder sig av, bulköverföringar. Från den valda typen av överföring kommer tider och hastighet mätas i tolv testfall. Alla testfall delas in i två grupper ett där mätningarna genomförs under tiden media strömmas ifrån en annan USB-enhet för att belasta USB-bussen. Och ett annat där bussen är obelastat. Värden visas och jämförs sedan med hjälp av grafer och histogram där medelvärden, standardavvikelser samt variationskoefficienten har tagits fram.

    Resultatet i denna studie visar att USB 3 en högre variationskoefficient i vissa lägen. Mätvärden visar att USB 3 har ett lägre variationskoefficientvärde när testdatan består av många små filer än vad det gör för USB 2. Dock ökar variationskoefficienten för USB 3 när filstorleken blir större jämfört med USB 2 som påvisar en sjunkande variationskoefficient.

  • 483.
    Wynn, Eleanor
    et al.
    Ronin Institute, USA.
    Vallo Hult, Helena
    University West, School of Business, Economics and IT, Divison of Law, Economics, Statistics and Politics.
    Qualitative and Critical Research in Information Systems and Human-Computer Interaction: Divergent and Convergent Paths2019In: Foundations and Trends® in Information Systems, ISSN 2331-1231, Vol. 3, no 1-2, p. 1-233Article in journal (Refereed)
    Abstract [en]

    Information Systems (IS) and Human Computer Interaction(HCI)–including Computer-Supported Cooperative Work(CSCW)–address the development and adoption of computingsystems by organizations, individuals, and teams. Whileeach has its own emphasis, the timelines for adopting qualitativeand critical research differ dramatically. IS used bothin the late 1980s, but critical theory appeared in HCI onlyin 2000. Using a hermeneutic literature review, the papertraces these histories; it applies academic cultures theoryas an explanatory framework. Institutional factors includeepistemic bases of source disciplines, number and centralityof publication outlets, and political and geographic contexts.Key innovations in IS are covered in detail. The rise ofplatformization drives the fields toward a common scopeof study with an imperative to address societal issues thatemerge at scale.

  • 484.
    Yako, Aram
    et al.
    University West, School of Business, Economics and IT, Divison of Informatics.
    Dahl, Isak
    University West, School of Business, Economics and IT, Divison of Informatics.
    Factors that affect usage intention towards mobile augmented reality in fashion e-commerce.: A quantitative study using UTAUT2 model2019Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Today e-commerce is growing more and more popular. It might be because of the easy access directly from the home or workplace. It might also have to do with the continuous smartphone evolution allowing more people internet access than ever before. Augmented reality (AR) is a technology that can generate virtual objects and integrate them into the real world. When new technology such as AR enters the field of ecommerce, it is difficult to predict the consumers' response. This study will focus on the factors that are important for consumers' usage intentions towards mobile AR in fashion e-commerce. A few of these factors are how well technology provides benefits in performing certain activities, how easy it is to use technology and how enjoyable it is to use it. Based on past research, an acceptance model (UTAUT2) was adopted to examines what factors affect user's intention to use mobile AR in fashion e-commerce. PLS-SEM was used to estimate the relationship between factors in the UTAUT2 model. With the help of social media, a survey was distributed with the "snowball technique" to gather information. To limit the data, only those between the ages of 16 and 38 were allowed to participate in the survey. Towards the end of the timeframe of collecting data, there were 120 participants. Only two out of the six investigated factors had a positive impact on user's usage intentions: habit and performance expectancy.

  • 485.
    Yan Lin, Wu
    University West, Department of Economics and IT.
    A Lightweight Framework for Tracing andVisualizing Real-Time Operating Systems2012Independent thesis Advanced level (degree of Master (One Year)), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    System tracing is a helpful method for engineersand users to know exactly what happens in an operating system,especially in real-time operating systems (RTOS), because forreal-time system, it is normally more difficult to know theperformance of hardware and software than for desktopcomputers. Although this kind of tracing tools already exist forsome commercial RTOS, it is fairly hard to see those tools forsmall or open source RTOS. Moreover, because the structure andimplementation of different RTOS varies, it is rare to find aframework that can easily be ported to those platforms. In thisthesis, a solution is presented to this general tracing problem ondifferent platforms. By using the portable framework, it ispossible to implement tracing component into a real timeoperating system by some simple reconfigurations. This platformportability feature is accomplished by separating the specificplatform logic from the logic of the tracing part. Finally, adeployment of this framwork onto a small open source real-timeoperating system—AtomThreads, running on an AVRATmega1650 – is used as a demonstration of this framework.

  • 486.
    Yehorov, Yurii
    et al.
    Federal University of Uberlandia (UFU),Center for Research and Development of Welding Processes, Laprosolda, Uberlândia, MG 38408-100, Brazil.
    da Silva, Leandro João
    Federal University of Uberlandia (UFU),Center for Research and Development of Welding Processes, Laprosolda, Uberlândia, MG 38408-100, Brazil.
    Scotti, Americo
    University West, Department of Engineering Science, Division of Welding Technology. Federal University of Uberlandia (UFU),Center for Research and Development of Welding Processes, Laprosolda, Uberlândia, MG 38408-100, Brazil.
    Exploring the use of switchback for mitigating homoepitaxial unidirectional grain growth and porosity in WAAM of aluminium alloys2019In: The International Journal of Advanced Manufacturing Technology, ISSN 0268-3768, E-ISSN 1433-3015, Vol. 104, no 1-4, p. 1581-1592Article in journal (Refereed)
    Abstract [en]

    In this work, an alternative approach to prevent unidirectional grain growth in wire + arc additive manufacturing (WAAM) is proposed and assessed, by moving cyclically the torch forward and backward, likewise the welding technique known as switchback. A series of tests were planned with CMT (cold metal transfer) process to compare three wall-like build-ups, which uses different deposition patterns, namely, in one-way direction, reverse direction, and switchback. The same equivalent travel speed and number of deposited layers were kept among them. Longitudinal sections were taken to identify the grain growth behaviour. Finally, samples were removed from the walls for porosity evaluation. The results confirmed the characteristics of unidirectional grain growth, when one-way direction condition was employed, and the break of growth direction between layers, when reverse direction was used, yet a zig-zag pattern became present. Differently, the application of switchback showed no preferential or unidirectional grain growth, suggesting less anisotropy of mechanical properties. In addition, switchback reduced porosity. © 2019, The Author(s).

  • 487.
    Yusuf, Abdisalam
    University West, Department of Engineering Science, Division of Natural Sciences and Electrical and Surveying Engineering.
    Effektivare bagagehantering vid Mogadishu´s flygplats2014Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    In this thesis, the main objective was to access improvement suggestions that will allow the SKA International Group to produce smoothed throughput at Mogadishu's airport. SKA International Group is a logistics company which took over responsibility at the airport three years ago. The company’s mission was to build the airport, and make it one of the best in the region. After three years, air traffic at the airport has increased significantly, which meant that the baggage handling became a major problem. The company has not applied for a newer and more modern equipment to cope with the pressure of the baggage that increases in number with each passing day. The work consisted of a theoretical part with a literature study based on contemporary research and also a qualitative study by interviewing a number of people at the company. There is also a survey of the company's process flow using a tool called value stream mapping. With the help of the analysis, it identified what is value-adding and non-value adding time for baggage handling. The analysis identified also areas for improvement that were critical in order to reduce the lead time. At the end of this project, it mentions a number of suggestions for improvement that can create the conditions for a successful change for the better. One of the main improvement suggestions there is how the company can achieve lead time reduction at the airport

  • 488.
    Zampal, Luigi
    et al.
    University of Trieste, Department of Mathematics and Geoscience, Trieste, Italy.
    Tenzer, Robert
    Hong Kong Polytechnic University, Department of Land Surveying and Geo-Informatics, Hong Kong.
    Eshagh, Mehdi
    University West, Department of Engineering Science, Division of Mathematics, Computer and Surveying Engineering.
    Pitonak, Martin
    University of West Bohemia, New Technologies for the Information Society (NTIS), Faculty of Applied Sciences, Czech Republic.
    Evidence of mantle upwelling/downwelling and localized subduction on Venus from the body-force vector analysis2018In: Planetary and Space Science, ISSN 0032-0633, E-ISSN 1873-5088, Vol. 157, p. 48-62Article in journal (Refereed)
    Abstract [en]

    Considering that Venus has a size very similar to Earth, thermal evolution of both planets should be comparable. Nonetheless, there is no clear evidence of plate tectonics or plate motions on Venus. Instead, various surface deformations attributed to volcanism, resurfacing, localized subduction and other geologic processes were recognized on the planet. In this study we attempt to classify the origin of lithospheric forces on Venus based on using topographic and gravity information. For this purpose, we also estimate the Venusian crustal thickness. In agreement with findings from previous studies, the signature of past or recent global tectonism in the body-force vector pattern on Venus is absent, while exhibiting only regional anomalies. The maximum intensity inferred in the Atla and Beta Regios is likely attributed to mantle upwelling. This is also confirmed by the gravity-topography spectral correlation and admittance analysis that shows the isostatic relaxation of these volcanic regions. The regional body-force pattern in the Bell Regio suggests that a much less pronounced force intensity there is possibly related to crustal load of lava flows. Elsewhere, the body-force intensity is relatively weak, with slightly more pronounced intensity around the Ishtar Terra and the Arthemis Chasmata. The body-force pattern in the Arthemis Chasmata supports the hypothesis that coronae structures are the result of mantle upwelling and the subsequent (localized) plume-induced subduction with only limited horizontal crustal motions. The prevailing divergent pattern of body-force vectors in the Ishtar Terra region suggests the presence of tensional forces due to the downwelling mantle flow that is responsible for a crustal thickening along the Freyja and Maxwell Montes. Except for the Atla and Beta Regios where the isostasy is relaxed by the (active) mantle plumes, the crustal thickness is spatially highly correlated with the topography, with a thin crust under the plains and a thick crust under the plateaus. The maximum Moho depth under the Maxwell Montes in the Ishtar Terra exceeds 90 km.

  • 489.
    Åkesson, Martin
    et al.
    University West, Department of Engineering Science, Division of Computer and Electrical Engineering.
    Svensson, Jimmie
    University West, Department of Engineering Science, Division of Computer and Electrical Engineering.
    Nydesign av kommunalt corenät2014Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    This thesis is covering a couple of problems within the municipality of Uddevalla and their core network. Today the network consists entirely of layer-2 links and routing which is divided between three multilayer switches. These switches main purpose is routing. They are configured with all static routs. To divide the routing in such a way means suboptimal routing, which in turn encumbers all links and network devices unnecessary. Since it is time to upgrade and replace all key components within the core network, this project resulted in a solution witch solves these problems.

    The design of the new core has been evolving through numerous tests in a lab environment, comparing two different types of routing. On one hand, todays model where the routing is distributed on a couple of different switches, and on the other, a routing solution where the routing is taking place as close to the source as possible. Through the results of these tests, a new design has been proposed to both optimizing the routing and the traffic flows within the network.

    The new net design is built upon the Cisco hierarchy (hierarchical) model. It is a model which describes how a scalable and redundant network should be built. In this model, the network is divided into three logical layers; core, distribution and access. In this proposal, the routing is more effective due to the fact that is has been moved to the distribution layer. This change will also optimize the flow of traffic within the network. On top of it all, the dynamic routing protocol OSPF, which is divided in four different areas, is suggested to be implemented

  • 490.
    Åkesson, Tom
    et al.
    University West, Department of Engineering Science, Divison of Natural Sciences, Surveying and Mechanical Engineering.
    Fransson, Mårten
    University West, Department of Engineering Science, Divison of Natural Sciences, Surveying and Mechanical Engineering.
    Avvägning och trigonometrisk höjdmätning kontra satellitbaserad höjdmätning: En jämförelsestudie2014Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Since almost everything in our society can be tied to a geographic location, there must be maps to base our decisions on and to orientate ourselves. Lantmäteriet, who has the overall responsibility for the maps of Sweden, present most objects with planar coordinates. The uncertainty of planar coordinate determination is low when using modern satellite systems.

    When measuring heights, which is becoming more important, the theoretical uncertainty of those new methods is much higher. Therefore the object is to investigate, through a quantitative method, if the satellite systems can replace levelling and trigonometric levelling. Three questions where formulated and are the basis to reach the object of the study.

    The height difference between levelling and trigonometric levelling, NRTK and post processed static measurement is the main question underlying the discussion. The study show that the height difference was lowest using trigonometric levelling followed by NRTK. Post processed data has a bigger difference. The deviation can also be called uncertainty and compared to tolerances and requirements in the construction business as well with real estate formation. The comparison answers the second question.

    Examination of the mean value of time for each method showed that the satellite methods are more time efficient compared to levelling. The static carrierwave measurement makes itself not just in the argument because the results accuracy is dependent on the time the receiver collects satellite data.

    After a reflection of the methodology the study came to a conclusion that the initial point and it’s relation to vegetation and buildings affected the results of static carrierwave measurement negative 

  • 491.
    Öman, Anne
    et al.
    University of Gothenburg, Department of Applied IT.
    Sofkova Hashemi, Sylvana
    University West, Department of Social and Behavioural Studies, Division for Educational Science and Languages.
    Design and redesign of a multimodal classroom task: implications for teaching and learning2015In: Journal of Information Technology Education, ISSN 1547-9714, E-ISSN 1539-3585, Vol. 14, no 1, p. 139-159Article in journal (Refereed)
    Abstract [en]

    Digital technologies are increasingly implemented in Swedish schools, which impact on education in the contemporary classroom. Screen-based practice opens up for new forms and multiplicity of representations, taking into account that language in a globalized society is more than reading and writing skills. This paper presents a case study of technology-mediated instruction at the primary-school level including an analysis of the designed task and how the teacher orchestrated the digital resources during three introductory classes. The aim was also to explore the pupils’ redesigning of advertising films based on teacher’s instructions and available digital resources. Sequences of a learning trajectory were video recorded and analysed from a multimodal perspective with a focus on the designed task and the processes of how pupils orchestrate meaning through their selection and configuration of available designs. The findings show a distinction between the selection of design elements in the teacher’s orchestration of the laptop resources during instruction and the pupils’ redesigning of the task. Pupils’ work developed from the linguistic design provided by the teacher towards visual design and the use of images as the central mode of expression in the process of creating advertising films. The findings also indicate a lack of orientation towards subject content due to the teacher’s primary focus on introducing the software.

  • 492.
    Öman, Anne
    et al.
    University of Gothenburg, Department of Applied IT.
    Svensson, Lars
    University West, School of Business, Economics and IT, Divison of Informatics.
    Similar products different processes: Exploring the orchestration of digital resources in a primary school project2014In: Computers and education, ISSN 0360-1315, E-ISSN 1873-782X, Vol. 81, p. 247-258Article in journal (Refereed)
    Abstract [en]

    Today, teachers and pupils are interacting with digital devices during different types of activities in theclassroom context. During such activities, dialogic interaction has a particular value as a pedagogicalpractice that helps to develop pupils' understanding. This study has explored the question: In what waysdo digital resources support dialogic and synergistic interaction?In order to explore primary schoolpupils' interaction within group activity and how they make use of the features of the laptops, theempirical material was collected through video recordings and further analysed with the interactivityanalysis framework (IAF) developed by Beauchamp and Kennewell (2010). The findings show thatalthough the products produced by the different groups of pupils were similar in a technological way (i.e.the pupils used the same modes of expression), the patterns of interaction during the group processesvaried. Two out of six groups used the digital resource as an 'object of interaction', where the tool had amore passive role during the group collaboration. The other four groups used the ICT resource as a 'toolfor interaction', where the resource became more of an interaction partner during the meaning-makingprocesses, which opened up opportunities for learning. The findings also indicate that the interplay inthese four groups between the group members and the laptop features seems to have developed thepupils' understanding of ICT resources as well as their understanding of the subject content during thegroup work. Synergistic interaction with ICT was rather rare but was observed in one of the groups

  • 493.
    Östlund, Christian
    University West, School of Business, Economics and IT, Divison of Informatics.
    E-learning use patterns in the workplace: Web logs from interaction with a web based lecture2012In: International Journal of Advanced Corporate Learning, ISSN 1867-5565, E-ISSN 1867-5565, Vol. 5, no 4, p. 4-8Article in journal (Refereed)
    Abstract [en]

    When designing for e-learning the objective is todesign for learning i.e. the technology supporting thelearning activity should aid and support the learningprocess and be an arena where learning is likely to occur. Toobtain this when designing e-learning for the workplace theauthor argue that it is important to have knowledge on howusers actually access and use e-learning systems. In order togain this knowledge web logs from a web lecture developedfor a Scandinavian public body has been analyzed. During aperiod of two and a half months 15 learners visited the weblecture 74 times. The web lecture consisted of streamingvideo with exercises and additional links to resources on theWWW to provide an opportunity to investigate the topicfrom multiple perspectives. The web lecture tookapproximately one hour to finish. Using web usage miningfor the analysis seven groups or interaction patternsemerged: peaking, one go, partial order, partial unordered,single module, mixed modules, non-video modules.Furthermore the web logs paint a picture of the learningactivities being interrupted. This suggests that modulesneeds to be fine-grained (e.g. less than 8 minutes per videoclip) so learners’ do not need to waste time having to watchparts of a video clip while waiting for the part of interest toappear or having to fast forward. A clear and logicalstructure is also important to help the learner find their wayback accurately and fast.

  • 494.
    Östlund, Christian
    et al.
    University West, Department of Economics and IT, Divison of Informatics.
    Jobe, William
    University West, Department of Economics and IT, Divison of Informatics.
    Svensson, Lars
    University West, Department of Economics and IT, Divison of Informatics.
    E-training through web lectures2014In: Proceedings of Society for Information Technology & Teacher Education International Conference 2014 / [ed] M. Searson & M. Ochoa, Chesapeake, VA: AACE , 2014, p. 397-402Conference paper (Refereed)
    Abstract [en]

    This paper sets out to inform how technology can be designed to support formal workplace training by acknowledging the context of every day work. The research in this paper follows the approach of design science research and a design theory for e-training through web lectures emerged in collaboration with members of the county administration through four designcycles of problem awareness: conceptual suggestion, system development, and evaluation. Aframework called authentic e-learning with nine design principles was chosen as a kernel theory.The design principles were then evaluated in the context of workplace learning and after four design cycles some of the original design principles was still unaltered, some was adapted to the conditions of workplace learning and new principles emerged from the evaluation process.

  • 495.
    Östlund, Christian
    et al.
    University West, Department of Economics and IT, Division of Computer Science and Informatics.
    Kautz, Karlheinz
    Copenhagen Business School.
    Svensson, Lars
    University West, Department of Economics and IT, Division of Computer Science and Informatics.
    Towards adapting authentic learning for formal workintegrated e-learning2009In: Proceedings of the 4th International Conference on Design Science Research in Information Systems and Technology, DESRIST '09, 2009, p. Aricle 29-Conference paper (Other academic)
    Abstract [en]

    This poster reports from the initial steps of formulating a prescriptive design theory to support the development of scholastic/formal work-integrated e-learning systems. For this purpose a framework for authentic learning, developed andevaluated in a school setting and the eight components of design theories by Gregor and Jones has been used to guide two elearning activities in a work setting. Adapting authentic learning to a formal work-integrated e-learning context calls for a simplification of the framework where some elements of authentic learning become peripheral whereas others become more central. Copyright 2009 ACM.

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