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  • Rosengren, Theo
    Linköping University, Department of Management and Engineering, Carl Malmsten - furniture studies.
    Att förmedla ett hantverk: – ett examensarbete om görande, kunskapsfilosofi och (visionärt) mångfaldsarbete inom trähantverk2017Independent thesis Basic level (degree of Bachelor), 10,5 credits / 16 HE creditsStudent thesis
  • Prameswari, Carry
    Linköping University, Department of Management and Engineering, Fluid and Mechatronic Systems. -.
    Simulation Model Development of a Subscale Fighter Demonstrator: Aerodynamic Database Generation and Propulsion Modeling2017Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    The main objective of this thesis was to improve the simulation model of a subscale fighter demonstratorthat had been developed previously. In order to give a reliable result, the simulation model should be modeled correctly and employ accurate input. To fulfill this objective two approaches was performed, the first was by providing the aerodynamic derivatives database in order to be implemented  in the simulation model, and the second process is to improve the propulsion module of the  simulation model. The aerodynamic database was generated by several VLM and panel  method software, namely Tornado, VSPAero and XFLR5, which uses subscale fighter  demonstrator called Generic Future Fighter  (GFF) as the aircraft model. The results from  different methods and software were then compared first before it was implemented to the  simulation model. The second process includesenhancing the propulsion model and implementation of the aerodynamic database.The propulsion model enhancement covers the improvement of thrust modeling and development of fuel consumption model. Additionally, the aerodynamic database implementation was executed by connecting the  external sets of the database into the simulation  model automatically. The verification process  was performed by comparing the result of the simulation model against recorded flight data, also by comparing the improved and the  previous simulation model result to see the effect of improvement that was carried out. Using the improved model of engine thrust and fuel consumption model, the propulsion module can produce a reliable outcome of forces and   moments computation. Moreover, theimplementation of the aerodynamic database  also gives a significant improvement in the simulation model result.

  • Martinez, Luis Iñaki
    Linköping University, Department of Management and Engineering, Applied Thermodynamics and Fluid Mechanics.
    Investigation of CFD conjugate heat transfer simulation methods for engine components at SCANIA CV AB2017Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    The main objective of this Master Thesis project is the development of a new methodology to perform Computational Fluid Dynamics (CFD) conjugate heat transfer simulations for internal combustion engines, at the Fluid and Combustion Simulations Department (NMGD) at Scania CV AB, Södertalje, Sweden. This new method allows to overcome the drawbacks identified in the former methodology, providing the ability to use the more advanced polyhedral mesh type to generate good quality grids in complex geometries like water cooling jackets, and integrating all the different components of the engine cylinder in one unique multi-material mesh. In the method developed, these advantages can be used while optimizing the process to perform the simulations, and obtaining improved accuracy in the temperature field of engine components surrounding the water cooling jacket when compared to the experimental data from Scania CV AB tests rigs.

    The present work exposes the limitations encountered within the former methodology and presents a theoretical background to explain the physics involved, describing the computational tools and procedures to solve these complex fluid and thermal problems in a practical and cost-effective way, by the use of CFD.A mesh sensitivity analysis performed during this study reveals that a mesh with low y+ values, close to 1 in the water cooling jacket, is needed to obtain an accurate temperature distribution along the cylinder head, as well as to accurately identify boiling regions in the coolant domain.

    Another advantage of the proposed methodology is that it provides new capabilities like the implementation of thermal contact resistance in periodical contact regions of the engine components, improving the accuracy of the results in terms of temperature profiles of parts like valves, seats and guides.

    The results from this project are satisfactory, providing a reliable new methodology for multi-material thermal simulations, improving the efficiency of the work to be performed in the NMGD department, with a better use of the available engineering and computational resources, simplifying all the stages of multi-material projects, from the geometry preparation and meshing, to the post-processing tasks.

  • Allen, John
    Linköping University, Department of Management and Engineering, Machine Design. Scania CV AB.
    A Method for Reducing Ash Volume in Wall-Flow Diesel Particulate Filters: Water Injection as a Service Tool to Improve Fuel Consumption and Particulate Filter Service Life2017Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
  • Koppanen, Mari
    Linköping University, Department of Management and Engineering, Carl Malmsten - furniture studies.
    Modern Nomadism -  En kompakt, flexibel och mobil möbelkollektion inriktad till unga vuxna2017Independent thesis Basic level (degree of Bachelor), 10,5 credits / 16 HE creditsStudent thesis
    Abstract [en]

    Modern Nomadism is a study of compact, mobile and flexible furniture directed to young adults who are moving to their first own apartment. This report describes a design process in which young adults’ needs in the current housing shortage are in focus. The report presents a design proposal of a furniture collection which is suitable for different life situations.

    Theoretical connections to the report have been gathered through interviews, literature references and a questionnaire survey. The collection consists of two pieces of furniture, which are suitable for a young person moving into his first home from his parents. The report is supplemented with my own reflections and analyzes. 

  • Johansson, Hanna
    Linköping University, Department of Management and Engineering, Environmental Technology and Management.
    Interdisciplinary Requirement Engineering for Hardware and Software Development: from a Hardware Development Perspective2017Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Complexity in products is increasing, and still there is lack of a shared design language ininterdisciplinary development projects. The research questions of the thesis concern differencesand similarities in requirement handling, and integration, current and future. Futureintegration is given more focus with a pair of research questions highlighting obstacles andenablers for increased integration. Interviews were performed at four different companieswith complex development environments whose products originated from different fields;hardware, software, and service. Main conclusions of the thesis are: Time-frames in different development processes are very different and hard to unite. Internal standards exist for overall processes, documentation, and modification handling. Traceability is poorly covered in theory whilst being a big issue in companies. Companies understand that balancing and compromising of requirements is critical fora successful final product. The view on future increased interdisciplinary development is that there are more obstaclesto overcome than enablers supporting it. Dependency is seen as an obstacle inthis regard and certain companies strive to decrease it.The thesis has resulted in general conclusions and further studies is suggested into morespecific areas such as requirement handling tools, requirement types, and traceability.

  • Vladavic, Alma
    et al.
    Linköping University, Department of Social and Welfare Studies, Learning, Aesthetics, Natural science. Linköping University, Faculty of Educational Sciences.
    Simonsson, Maria
    Linköping University, Department of Social and Welfare Studies, Learning, Aesthetics, Natural science. Linköping University, Faculty of Educational Sciences.
    Ann-Marie, Markström
    Linköping University, Department of Behavioural Sciences and Learning, Education, Teaching and Learning. Linköping University, Faculty of Educational Sciences.
    Förskoleföräldrars tankar om utvecklingssamtal2017In: VENUE, ISSN 2001-788X, Vol. 7, 1-6 p.Article in journal (Other (popular science, discussion, etc.))
  • Landström, Karl
    Linköping University, Department of Culture and Communication.
    Olika former av köttproduktion: - En etisk analys2017Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
  • Fallsberg, Beatrice
    Linköping University, Department of Electrical Engineering, Automatic Control.
    Modelling and Analysis of a Screw Joint Test Rig2017Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Today, tightening tools are widely used in the industry and on the market you will find several products that have been assembled with the help of tightening tools. For example, tightening tools are used in the automotive industry and when assembling computer hardware.

    It is important that the tightening tools are robust and of high quality in order to fulfil the demanded requirements. High assembly speed has entailed an extensive use of tightening tools. To ensure that the tightening tools have the desired properties, tightening tools are tested continuously using so-called test systems. This puts high demands on the test systems since it is of importance that the tightening tools can be tested in a simple, fast and reliable way as well as repeatedly. Therefore, Atlas Copco would like to investigate whether a test system constructed with an electrical motor is a good choice.

    The idea of this thesis is to investigate possibilities and limitations in a test system consisting of an electrical motor that emulates the behaviour of a screw joint. To be able to investigate hardware limitations a test rig is constructed and then modelled in MATLAB. Further, simulations have been carried out in order to analyse the possibilities and limitations of such a test rig.

    The conclusion is that the implemented LQ controller seems to be able to control the braking motor sufficiently like a screw joint.

  • Tammia, Rasmus
    Linköping University, Department of Electrical Engineering, Automatic Control.
    Modeling and Control of Lime Addition in a Flotation Process2017Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Flotation is an important and versatile mineral processing technique that is used to separate hydrophobic materials from hydrophilic. This technique makes it possible to mine complex ores that otherwise would have been regarded as uneconomic and non-beneficial. In this case flotation is used to separate copper from the unwanted gangue.

    The addition of lime is used to control the pH level in the flotation’s pulp, which governs the selectivity of the process, i.e. which minerals are recovered. Currently, fluctuating concentration grades of the produced metals have been observed in Boliden Aitik. Therefore, Boliden proposes a new control strategy which aims to maintain a constant ratio between the added lime and the incoming ore flow, but at the same time ensuring that the pH level is maintained within allowed limits.

    The aim of this thesis is to develop a model that captures the most essential dynamics of a process stage where lime is added, and then evaluate the suggested control strategy by studying suitable control structures.

    A linear model describing the system dynamics in a specific operating region is obtained by conducting step response experiments on the process. The model is then used to obtain a model describing the disturbances of the process, thereby yielding a complete model that describes the most important dynamics.

    The most promising control structure utilizes the concept of selective control, where a ratio controller is allowed to maintain a constant ratio as long as the pH level is within allowed boundaries. The pH level is maintained within the boundaries with upper and lower bound pH controllers that utilize the concept of an equivalent control objective (known as the strong acid equivalent) in order to achieve satisfying pH control. The results show that the control structure is able to maintain a constant ratio, and also ensure that the pH level is kept within the allowed limits.

    A cascade inspired pH ratio controller is also studied and evaluated. The results show that this pH ratio controller is only able to maintain a constant ratio as long as the incoming ore flow is constant. However, the outcomes also suggest that the concentration grades are either sensitive to variations in the ratio between added reagent and incoming ore flow, or that there is something else that causes them to vary.

  • Ilestrand, Maja
    Linköping University, Department of Electrical Engineering, Computer Vision.
    Automatic Eartag Recognition on Dairy Cows in Real Barn Environment2017Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    All dairy cows in Europe wear unique identification tags in their ears. These eartags are standardized and contains the cows identification numbers, today only used for visual identification by the farmer. The cow also needs to be identified by an automatic identification system connected to milk machines and other robotics used at the farm. Currently this is solved with a non-standardized radio transmitter which can be placed on different places on the cow and different receivers needs to be used on different farms. Other drawbacks with the currently used identification system are that it is expensive and unreliable. This thesis explores the possibility to replace this non standardized radio frequency based identification system with a standardized computer vision based system. The method proposed in this thesis uses a color threshold approach for detection, a flood fill approach followed by Hough transform and a projection method for segmentation and evaluates template matching, k-nearest neighbour and support vector machines as optical character recognition methods. The result from the thesis shows that the quality of the data used as input to the system is vital. By using good data, k-nearest neighbour, which showed the best results of the three OCR approaches, handles 98 % of the digits.

  • Karsten, Simona
    Linköping University, Department of Management and Engineering, Political Science. Linköping University, Faculty of Arts and Sciences.
    The Jellyfish Invasion: Finding connections between the increase of jellyfish and politics2013Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Research proves that marine environments are the fastest degrading environments on earth. Yet existing environmental institutions are not robust enough to protect our oceans from further degradation. The Jellyfish Invasion serves as a practical example for demonstrating the environmental status of our oceans. The increase of jellyfish is mainly caused by anthropogenic disturbance, and addresses the unsustainability with a continuing status quo of exploitation. EU is one of the main drivers of environmental awareness and environmental policy on the global arena of international conventions. EU commits to large investments in environmental sustainability and provides an extensive policy-network containing comprehensive measures. Although these formal environmental institutions, there exists informal institutions of implementation deficit in environmental matters. The global arena is often said to be characterized of the theory of the tragedy of the common, this theory seems also applicable within the EU.

  • Nord, Maria
    et al.
    Region Östergötland, Local Health Care Services in Central Östergötland, Department of Neurology.
    Zsigmond, Peter
    Linköping University, Department of Clinical and Experimental Medicine, Division of Neuro and Inflammation Science. Linköping University, Faculty of Medicine and Health Sciences. Region Östergötland, Anaesthetics, Operations and Specialty Surgery Center, Department of Neurosurgery.
    Kullman, Anita
    Linköping University, Department of Clinical and Experimental Medicine, Division of Neuro and Inflammation Science. Linköping University, Faculty of Medicine and Health Sciences.
    Dizdar-Segrell, Nil
    Linköping University, Department of Clinical and Experimental Medicine, Division of Neuro and Inflammation Science. Linköping University, Faculty of Medicine and Health Sciences. Region Östergötland, Local Health Care Services in Central Östergötland, Department of Neurology.
    Levodopa Pharmacokinetics in Brain after Both Oral and Intravenous Levodopa in One Patient with Advanced Parkinson’s Disease2017In: Advances in Parkinsons Disease, ISSN 2169-9712, Vol. 6, no 2, 52-66 p.Article in journal (Refereed)
    Abstract [en]

    Objective: One patient received oral levodopa during a study aiming for better understanding of the basal ganglia and of the mechanisms of deep brain stimulation of the subthalamic nucleus (STN DBS) with and without intravenous (IV) levodopa infusion in patients with Parkinson’s disease (PD). The results from oral and IV levodopa treatment are presented.

    Methods: Five patients with advanced PD were included in the original study. During planned STN DBS surgery microdialysis probes were implanted in the right putamen and in the right and left globus pallidus interna (Gpi). During the study, microdialysis was performed continuously and STN DBS, with and without IV levodopa infusion, was performed according to a specific protocol. After DBS surgery, but before STN DBS was started, one patient received oral levodopa/ benserazide and entacapone tablets out of protocol due to distressing parkinsonism.

    Results: The levodopa levels increased prompt in the central nervous system after the first PD medication intakes but declined after the last. Immediately the levodopa seemed to be metabolized to dopamine (DA) since the levels of DA correlated well with levodopa concentrations. Left STN DBS seemed to further increase DA levels in left Gpi while right STN DBS seemed to increase DA levels in the right putamen and right Gpi. There was no obvious effect on levodopa levels.

    Conclusions: The results indicate that PD patients still have capacity to metabolize levodopa to DA despite advanced disease with on-off symptoms and probably pronounced nigral degeneration. STN DBS seems to increase DA levels with a more pronounced effect on ipsilateral structures in striatum.

  • Fornander, Linnea
    Linköping University, Department of Computer and Information Science.
    Språklig anpassning till en artificiell dialogpartner2017Independent thesis Basic level (degree of Bachelor), 12 credits / 18 HE creditsStudent thesis
    Abstract [sv]

    Trots att antalet medier via vilka vi människor kan kommunicera med varandra är högre än någonsin, är talad interaktion något unikt betydelsefullt för våra mänskliga samhällen och relationer och därför ett ständigt relevant forskningsområde. Denna studie undersökte kvantitativa skillnader i hur människor konverserar med en talbaserad chattbot jämfört med en mänsklig konversationspartner, då de utförde en uppgift utformad för att skapa jämförliga dialoger. Resultatet visade på att konversationerna med chattbotten var mindre effektiva och ledde till sämre prestation i uppgiften. Dessutom påvisades att deltagarna använde en kortare genomsnittlig turlängd i konversationer med chattbotten, samt signifikanta skillnader i ordvariation mellan de två betingelserna. Dessa skillnader kan bero på att människor anpassar sitt språk efter sina uppfattningar av chattbottens kommunikativa egenskaper, och innebär att möjligheten att generalisera egenskaper hos människors tal i konversationer med liknande artificiella dialogpartners till konversationer med människor kan vara begränsad.

  • Blikstad, Mathias
    et al.
    Saab AB, Sweden.
    Karlsson, Emil
    Linköping University, Department of Mathematics, Optimization . Linköping University, Faculty of Science & Engineering.
    Lööw, Tomas
    Saab AB, Sweden.
    Rönnberg, Elina
    Linköping University, Department of Mathematics, Optimization . Linköping University, Faculty of Science & Engineering.
    An Optimisation Approach for Pre-Runtime Scheduling of Tasks and Communication in an Integrated Modular Avionic System2017Report (Other academic)
    Abstract [en]

    In modern integrated modular avionic systems, applications share hardware resources on a common avionic platform. Such an architecture necessitates strict requirements on the spatial and temporal partitioning of the system to prevent fault propagation between different aircraft functions. One way to establish a temporal partitioning is through pre-runtime scheduling of the system, which involves creating a schedule for both tasks and a communication network.

    While the avionic systems are growing more and more complex, so is the challenge of scheduling them. Scheduling of the system has an important role in the development of new avionic systems since functionality typically is added to the system over a period of several years and a scheduling tool is used both to detect if the platform can host the new functionality and, in case this is possible, to create a new schedule. For this reason an exact solution strategy for avionics scheduling is preferred over a heuristic one.

    In this paper we present a mathematical model for an industrially relevant avionic system and present a constraint generation  procedure for scheduling of such systems. We apply our optimisation approach to instances provided by our industrial partner. These instances are of relevance for the development of future avionic systems and contain up to 20 000 tasks to be scheduled. The computational results show that our optimisation approach can be used to create schedules for such instances within reasonable time.

  • Artchounin, Daniel
    Linköping University, Department of Computer and Information Science, Software and Systems.
    Tuning of machine learning algorithms for automatic bug assignment2017Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    In software development projects, bug triage consists mainly of assigning bug reports to software developers or teams (depending on the project). The partial or total automation of this task would have a positive economic impact on many software projects. This thesis introduces a systematic four-step method to find some of the best configurations of several machine learning algorithms intending to solve the automatic bug assignment problem. These four steps are respectively used to select a combination of pre-processing techniques, a bug report representation, a potential feature selection technique and to tune several classifiers. The aforementioned method has been applied on three software projects: 66 066 bug reports of a proprietary project, 24 450 bug reports of Eclipse JDT and 30 358 bug reports of Mozilla Firefox. 619 configurations have been applied and compared on each of these three projects. In production, using the approach introduced in this work on the bug reports of the proprietary project would have increased the accuracy by up to 16.64 percentage points.

  • Malmqvist, Erik
    Linköping University, Department of Culture and Communication, Culture and Aesthetics. Linköping University, Faculty of Arts and Sciences.
    Replik till Marcus Agnafors: "En rimlig samvetsklausul"2017In: Tidskrift för politisk filosofi, ISSN 1402-2710, no 2, 33-38 p.Article in journal (Other academic)
  • Sundblad, Anton
    et al.
    Linköping University, Department of Computer and Information Science, Database and information techniques.
    Brunberg, Gustaf
    Linköping University, Department of Computer and Information Science, Database and information techniques.
    Secure hypervisor versus trusted execution environment: Security analysis for mobile fingerprint identification applications2017Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Fingerprint identification is becoming increasingly popular as a means of authentication for handheld devices of different kinds. In order to secure such an authentication solution it is common to use a TEE implementation. This thesis examines the possibility of replacing a TEE with a hypervisor-based solution instead, with the intention of keeping the same security features that a TEE can offer. To carry out the evaluation a suitable method is constructed. This method makes use of fault trees to be able to find possible vulnerabilities in both systems, and these vulnerabilities are then documented. The vulnerabilities of both systems are also compared to each other to identify differences in how they are handled. It is concluded that if the target platform has the ability to implement a TEE solution, it can also implement the same solution using a hypervisor. However, the authors recommend against porting a working TEE solution, as TEEs often offer finished APIs for common operations that would require re-implementation in the examined hypervisor.

  • Brooke, Robert
    et al.
    Linköping University, Department of Science and Technology, Physics and Electronics. Linköping University, Faculty of Science & Engineering.
    Mitraka, Evangelia
    Linköping University, Department of Science and Technology, Physics and Electronics. Linköping University, Faculty of Science & Engineering.
    Sardar, Samim
    Linköping University, Department of Science and Technology, Physics and Electronics. Linköping University, Faculty of Science & Engineering.
    Sandberg, Mats
    Linköping University, Department of Science and Technology, Physics and Electronics. Linköping University, Faculty of Science & Engineering. Acreo Swedish ICT, SE-601 74 Norrköping, Sweden.
    Sawatdee, Anurak
    Acreo Swedish ICT, SE-601 74 Norrköping, Sweden.
    Berggren, Magnus
    Linköping University, Department of Science and Technology, Physics and Electronics. Linköping University, Faculty of Science & Engineering.
    Crispin, Xavier
    Linköping University, Department of Science and Technology, Physics and Electronics. Linköping University, Faculty of Science & Engineering.
    Jonsson, Magnus P.
    Linköping University, Department of Science and Technology, Physics and Electronics. Linköping University, Faculty of Science & Engineering.
    Infrared electrochromic conducting polymer devices2017In: Journal of Materials Chemistry C, ISSN 2050-7526, E-ISSN 2050-7534, Vol. 5, no 23, 5824-5830 p.Article in journal (Refereed)
    Abstract [en]

    The conducting polymer poly(3,4-ethylenedioxythiophene) (PEDOT) is well known for its electrochromic properties in the visible region. Less focus has been devoted to the infrared (IR) wavelength range, although tunable IR properties could enable a wide range of novel applications. As an example, modern day vehicles have thermal cameras to identify pedestrians and animals in total darkness, but road and speed signs cannot be easily visualized by these imaging systems. IR electrochromism could enable a new generation of dynamic road signs that are compatible with thermal imaging, while simultaneously providing contrast also in the visible region. Here, we present the first metal-free flexible IR electrochromic devices, based on PEDOT:Tosylate as both the electrochromic material and electrodes. Lateral electrochromic devices enabled a detailed investigation of the IR electrochromism of thin PEDOT:Tosylate films, revealing large changes in their thermal signature, with effective temperature changes up to 10 [degree]C between the oxidized (1.5 V) and reduced (-1.5 V) states of the polymer. Larger scale (7 [times] 7 cm) vertical electrochromic devices demonstrate practical suitability and showed effective temperature changes of approximately 7 [degree]C, with good optical memory and fast switching (1.9 s from the oxidized state to the reduced state and 3.3 s for the reversed switching). The results are highly encouraging for using PEDOT:Tosylate for IR electrochromic applications.

  • Fei, Jiao
    et al.
    Linköping University, Department of Science and Technology, Physics and Electronics. Linköping University, Faculty of Science & Engineering.
    Naderi, Ali
    Billerudkorsnäs AB, SE-71830 Frövi, Sweden.
    Zhao, Dan
    Linköping University, Department of Science and Technology, Physics and Electronics. Linköping University, Faculty of Science & Engineering.
    Schlueter, Joshua
    Department of Physics and Astronomy, University of Kentucky, Lexington, KY40506-0055, USA.
    Shahi, Maryam
    Department of Physics and Astronomy, University of Kentucky, Lexington, KY40506-0055, USA.
    Sundström, Jonas
    Innventia AB Box 5604, SE-11486 Stockholm, Sweden.
    Granberg, Hjalmar
    Innventia AB Box 5604, SE-11486 Stockholm, Sweden.
    Edberg, Jesper
    Linköping University, Department of Science and Technology, Physics and Electronics. Linköping University, Faculty of Science & Engineering.
    Ail, Ujwala
    Linköping University, Department of Science and Technology, Physics and Electronics. Linköping University, Faculty of Science & Engineering.
    Brill, Joseph W.
    Department of Physics and Astronomy, University of Kentucky, Lexington, KY40506-0055, USA.
    Lindström, Tom
    Innventia AB Box 5604, SE-11486 Stockholm, Sweden.
    Berggren, Magnus
    Linköping University, Department of Science and Technology, Physics and Electronics. Linköping University, Faculty of Science & Engineering.
    Crispin, Xavier
    Linköping University, Department of Science and Technology, Physics and Electronics. Linköping University, Faculty of Science & Engineering.
    Ionic Thermoelectric Paper2017In: Journal of Materials Chemistry A, ISSN 2050-7488Article in journal (Refereed)
    Abstract [en]

    Ionic thermoelectric materials, such as polyelectrolyte like polystyrene sulfonate sodium (PSSNa), constitute a new class ofmaterial attracting interest due to their large Seebeck coefficient and the possibility to be used in ionic thermoelectricsupercapacitors (ITESCs) and field effect transistors. However pure polyelectrolyte membranes are not robust neitherflexible. In this article, we demonstrate the preparation of ionic thermoelectric paper by a simple, scalable and cost-effectivemethod. After composite with nanofibrillated cellulose (NFC), the resulting NFC-PSSNa paper is flexible and mechanicallyrobust; which is desirable of using roll-to-roll processes. The robust thermoelectric paper NFC-PSSNa combines high ionicconductivity (9 mS/cm), high ionic Seebeck coefficient (8.4 mV/K) and low thermal conductivity (0.75 Wm-1K-1) at 100 RH%,resulting in overall figure-of-merit of 0.025 at room temperature slightly better than the PSSNa. Enabling flexibility androbustness by compositing with cellulose constitutes an advance for scaling up the manufacturing of ionic thermoelectricsupercapacitors; but also enables new applications for conformable thermoelectric devices and flexible electronics

  • Helén, Ludvig
    Linköping University, Department of Computer and Information Science, Software and Systems.
    Automating Text Categorization with Machine Learning: Error Responsibility in a multi-layer hierarchy2017Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    The company Ericsson is taking steps towards embracing automating techniques and applying them to their product development cycle. Ericsson wants to apply machine learning techniques to automate the evaluation of a text categorization problem of error reports, or trouble reports (TRs). An excess of 100,000 TRs are handled annually.

    This thesis presents two possible solutions for solving the routing problems where one technique uses traditional classifiers (Multinomial Naive Bayes and Support Vector Machines) for deciding the route through the company hierarchy where a specific TR belongs. The other solution utilizes a Convolutional Neural Network for translating the TRs into low-dimensional word vectors, or word embeddings, in order to be able to classify what group within the company should be responsible for the handling of the TR. The traditional classifiers achieve up to 83% accuracy and the Convolutional Neural Network achieve up to 71% accuracy in the task of predicting the correct class for a specific TR.

  • Abrahamsson, Robin
    et al.
    Linköping University, Department of Computer and Information Science, Software and Systems.
    Berntsen, David
    Linköping University, Department of Computer and Information Science, Software and Systems.
    Comparing modifiability of React Native and two native codebases2017Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Creating native mobile application on multiple platforms generate a lot of duplicate code. This thesis has evaluated if the code quality attribute modifiability improves when migrating to React Native. One Android and one iOS codebase existed for an application and a third codebase was developed with React Native. The measurements of the codebases were based on the SQMMA-model. The metrics for the model were collected with static analyzers created specifically for this project. The results created consists of graphs that show the modifiability for some specific components over time and graphs that show the stability of the platforms. These graphs show that when measuring code metrics on applications over time it is better to do this on a large codebase that has been developed for some time. When calculating a modifiability value the sum of the metrics and the average value of the metrics between files should be used and it is shown that the React Native platform seems to be more stable than native.

  • Berggren, Linnea
    Linköping University, Department of Computer and Information Science.
    Vikten av patientsäkerhet på förlossningsavdelningar2017Independent thesis Basic level (degree of Bachelor), 12 credits / 18 HE creditsStudent thesis
    Abstract [sv]

    Syftet med detta arbete var att undersöka hur verksamheten vid en förlossningsavdelning fungerar med fokus på patientsäkerhet. Detta undersöktes genom att samla in data i form av intervjuer från Linköpings och Norrköpings förlossningsavdelningar. Materialet analyserades sedan genom en tematisk analys som resulterade i sex huvudteman (team, hälsa, information, träning, mål och system). Resultatet visar på att team, kommunikation och stresseliminering är de viktigaste fynden i studien. Dock är alla teman viktiga för patientsäkerheten då de tillsammans skapar ett säkrare system.

    För att dessa faktorer ska kunna samspela med varandra är det viktigt att systemet regelbundet utvärderas för att justeringar ska kunna göras. Detta för att systemet ska vara resilient och klara av de utmaningar som de ställs inför.

    Framtida studier som skulle vara intressanta att göra är att utöka insamlingen av data, undersöka hur små och stora förlossningsavdelningar i Sverige ser på patientsäkerhet och även jämföra den svenska verksamheten med exempelvis den kenyanska verksamheten. 

  • Jesper, Segeblad
    Linköping University, Department of Computer and Information Science, Human-Centered systems.
    Putting a spin on SPINN: Representations of syntactic structure in neural network sentence encoders for natural language inference2017Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    This thesis presents and investigates a dependency-based recursive neural network model applied to the task of natural language inference. The dependency-based model is a direct extension of a previous constituency-based model used for natural language inference. The dependency-based model is tested on the Stanford Natural Language Inference corpus and is compared to the previously proposed constituency-based model as well as a recurrent Long-Short Term Memory network. The experiments show that the Long-Short Term Memory outperform both the dependency-based models as well as the constituency-based model. It is also shown that what is to be explicitly represented depends on the model dimensionality that one use. With 50-dimensional models, more explicit representations of the dependency structure provides higher accuracies, and the best dependency-based model performs on par with the LSTM. Higher model dimensionalities seem to favor less explicit representations of the dependency structure. We hypothesize that a smaller dimensionality requires a more explicit representation of the relevant linguistic features of the input, while the explicit representation becomes limiting when a higher model dimensionality is used.

  • Johansson, Philip
    et al.
    Linköping University, Department of Computer and Information Science, Database and information techniques.
    Blomqvist, Niklas
    Linköping University, Department of Computer and Information Science, Database and information techniques.
    An Approach to Achieve DBMS Vendor Independence for Ides AB's Platform2017Independent thesis Basic level (university diploma), 10,5 credits / 16 HE creditsStudent thesis
    Abstract [en]

    Software that is developed with few integration capabilities to different user interfaces or database vendors might lose market share in the long run. To stay competitive, companies that find themselves in situations like these might need to look at options to increase their alternatives. This thesis aims to present and evaluate how Ides AB could achieve vendor independence as it relates to database integration.The proposed solution is based on pre-existing code from an existing product and thus includes theory about the methods and details how one can read, understand and analyse code. The outcome is presented with code examples to give the reader a clear and concise understanding. In the evaluation phase, we take other related work into consideration as it relates to our thesis focus. The proposed approach presented consists of a class to represent different database vendors. It also consists of abstract functions handling the interaction between different databases. Which database the class interacts with is determined by the connection established. The approach also includes what is possible to make database agnostic verified by an evaluation.

  • Gullin, Camilla
    Linköping University, Department of Social and Welfare Studies.
    Möjligheternas hus?: museer som arenor för kulturpolitiska visioner och allmänhetens fostran2017Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    This thesis deals with the different roles and social functions of Swedish museums today. It consists of an analysis of five cultural policy documents, which have been reviewed with the purpose of categorizing the various tasks and visions for the museums described in the texts. The different statements have been categorized into three main categories: the museum as an institution of free knowledge, the museum as a foster and the museum as a social actor. Within these categories different directives appears, that both contradict and reinforce each other. Here is a mixture of both older values and contemporary words with positive connotations. There is also a constant construction of negatively charged ”counter images”, or problems – of which the document’s own policys are designed as the problem solver.

     

    The various contradictions and paradoxes concerning the role and social function of the museum are seen in the thesis as an expression of the struggle between different discourses, proceeding from the concepts of discourse and hegemony presented by Laclau & Mouffe. Within the framework of these statements a process of negotiation between different discourses takes place, where different forces aim to fill different concepts with different meaning. This is important for the mission and social function of the museum, both today and in the future. The thesis finally shows how the museum functions as a social kitt, with the purpose of bringing together collective values in the fragmented and divided context of today. This functions as a protection against both internal and external threats.

  • Combler, Adam
    et al.
    Linköping University, Department of Computer and Information Science.
    Friberg, Philip
    Linköping University, Department of Computer and Information Science.
    Jokinen, Jani
    Linköping University, Department of Computer and Information Science.
    Larsson, Elin
    Linköping University, Department of Computer and Information Science.
    Mansén, Erik
    Linköping University, Department of Computer and Information Science.
    Martinsson, Tobias
    Linköping University, Department of Computer and Information Science.
    Pettersson, Albin
    Linköping University, Department of Computer and Information Science.
    Agil utveckling av webbapplikation för konkurrentanalys2017Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Syftet med den här rapporten är att beskriva utvecklingen av en webbapplikation för konkurrentanalys. Rapporten baseras på fem frågeställningar som berör produktens värde för kunden, gemensamma erfarenheter från projektet, användning av en systemanatomi, integration av separat utvecklade moduler samt anpassning av den agila projektstyrningsmetodiken Scrum. Projektet utfördes av sju studenter under 19 veckors tid med Scrum som projektstyrningsmetodik. Systemet har utvecklats utifrån en modulär modell och består av fem moduler; två API-moduler, en affärslogikmodul, en visualiseringsmodul samt en server. Detta tillvägagångssätt valdes för att underlätta utvecklingen om till exempel delar av mjukvaran behövde bytas ut.

    Värde för kunden skapades dels genom att utveckla systemet utifrån en modulär modell, men även genom noggrann dokumentation av kod och framställning av en användarmanual till kundens förfogande. De viktigaste gemensamma erfarenheter som togs med från projektet var vikten av öppen kommunikation inom gruppen samt att vara tydlig vid dialog med kund. Användandet av en systemanatomi gav enkelt en översikt över systemet, men eftersom det inte är en lika vedertagen modell som en designskiss i form av UML-diagram kan det försvåra vid verifikation med kund. För att underlätta integration av separat utvecklade moduler följdes en greningsmodell inom versionshantering och utvecklingen utfördes i par för att sprida kunskap. Slutligen applicerades en modifikation av projektstyrningsmetodiken Scrum, med influenser av parprogrammering och Kanban-tavla, på projektet.

  • Axelsson, Alfred
    Linköping University, Department of Computer and Information Science, Human-Centered systems.
    Designing for usability of 3D configuration in E-commerce: Interactive design of 3D in web applications2017Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Mass production of consumer products is both wasteful and limit the consumers' power to influence the design of what they are buying. When shopping for a product, the customer must choose between a range of specific products with limited variations. What if the customer could make all the design choices, creating and buying the product according to his or her own needs?

    A 3D product generator holding a configurable model of a product was created to replace static content in online stores and give creative power to customers. This work aimed at creating an effective 3D product generator by evaluating how users experience the design of and interaction with it, and finding general design goals when introducing interactive 3D content in static 2D environments.

    A prototype of a 3D product generator in a generic online storefront was implemented in two iterations, improving on and evaluating the design through usability testing. The evaluation of the final prototype suggested that the interface was indeed effective in both design and interaction. This work concludes that user feedback is crucial to creating a successful user experience, which in turn is important when creating interfaces for product configuration.

  • Karlsson, Emeli
    et al.
    Linköping University, Department of Management and Engineering, Logistics & Quality Management.
    Stadig, Therese
    Linköping University, Department of Management and Engineering, Logistics & Quality Management.
    Logistiska åtgärder för reducering av avvikelser i en försörjningskedja: En fallstudie av Volkswagen Group Sverige AB:s distribution av reservdelar2017Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    The study aims to develop recommendations in order to reduce the number of claims regarding not delivered goods during Volkswagen Group Sverige AB’s distribution of spare parts. By mapping the material and information flow, in the supply chain can be identified, and based on a further investigation of its causes useful proposals of actions can be presented.

    Part Logistics (henceforth VPL) is a part of Volkswagen Group Sverige AB‘s aftermarket function and distribute spare parts to around 250 dealers in Sweden, Finland and Norway. Every day, VPL supplies 15 000 order lines with spare parts for Volkswagen Passenger Cars, Volkswagen Commercial Vehicles, Audi, Skoda, SEAT and Porsche. VPL has identified deviations regarding the deliveries to the retailers which they consider important to investigate, since errorfree deliveries is a central part of customer satisfaction for retailers as well as end customers in the aftermarket. The deviations are internally referred to as claims and of the reported cases, 32 percent consist of situations where VPL fails to deliver an order line in time or at all. Those cases measure up to the type of claim that occurs to the greatest extent on VPL and is internally labelled as Not delivered.

    The theoretical framework includes theory within three main areas that are considered necessary for the further investigation. The aftermarket is one of the main areas, which partly includes general theory about the aftermarket and its characteristics, but also a framework adapted to the current study. Furthermore, mapping is presented as one of the main areas which includes practical approaches for mapping based on a number of theories. In the current study, the work of improvement also constitutes a central theoretical area and the third main area therefore includes the theory of how companies can accomplish continuous work of improvement based on several different methods. Based on VPL‘s current situation and acquired theory the task could be pinned down to a number of key issues including related questions and detailed questions, that serve as a tool for the further study.

     Based on the mapping of the supply chain as well as the acquired data from VPL, a number of scenarios could be formulated that represent different situations from where the claims labelled as Not delivered may occur. Through a data analysis regarding the formulated scenarios, it was found that the largest share of claims labelled as Not delivered is a result of unaccomplished order picks. By a further investigation of the causes regarding the presence of unaccomplished order picks, the root cause of the problem could be determined which is considered to be a lack of implemented technology and structured work with improvements. Based on the identified root causes recommendations are formulated including two action proposal expected to reduce the number of missed out deliveries. VPL is recommended to introduce more technological solutions in the business to ensure that order picking is performed. An introduction of more technology such as scanning and RFID would not only reduce the presence of unaccomplished order picks, it would further eliminate situations considered critical regarding the occurrence of other claims in the supply chain. Furthermore, VPL is recommended to implement a structured way of working with improvements which partly means that they will work actively to adjust and in a long-term prevent occurrence of deviations in the business.

  • Håkansson Modin, Martin
    et al.
    Linköping University, Department of Management and Engineering, Industrial Economics.
    Olofsson, Gustaf
    Linköping University, Department of Management and Engineering, Industrial Economics.
    The International Market Selection Process of Multinational Enterprises Expanding to Transition Economy Markets2017Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
  • Sörberg, Sanna
    et al.
    Linköping University, Department of Management and Engineering, Industrial Economics.
    Österlund, Mathias
    Linköping University, Department of Management and Engineering, Industrial Economics.
    Digitaliseringens påverkan på värdeerbjudandet inom skogsbranschen utifrån ett kundperspektiv2017Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    This study examines how digitalization changes the value proposition and the business model within the forest industry from the perspective of the forest owners and how this changes the experienced customer value. Previous studies have focused on how digitalization creates value for the company, and this study contributes to research by giving insights in how the customers perceive a digitalization and is useful in the design of the value proposition and the business model. 

    The Swedish forest industry is highly competitive and the companies have to compete for the wood and forest service jobs, which puts pressure on the wood buyers to offer the best solutions and the best customer experience to be able to compete for the wood. According to a study about digital Customer Experience Management (CEM) maturity, the forest industry is far behind other industries such as finance and retail. The low maturity is due to skepticism and the lack of urgency. However, this is starting to change as some forest companies in Sweden are starting to formulate digital strategies and form dedicated units for digital innovation in order to differentiate their offering and strengthen competitiveness.    

    The problem is that many forest companies do not know how to handle the forest owners, as they are a heterogeneous group with differences in age, internet usage, computer knowledge and customer needs. Another problem is that there is an expressed concern that a digitalization would diminish the personal relationship between the forest owner and the wood buyer, which denotes a fundamental part of the experienced customer value. Former studies show that the key to successful digitalization is to understand what the customers want and what creates the best customer experience. With the base in these problems, this study aims to create understanding for what value the customers experience in digitalization, and how the forest companies can adapt to this.

    The purpose of this study is to “describe and analyze how the value proposition changes from a customer perspective when the forest business is digitalized”. To answer this a case study has been conducted on the company Holmen Skog in which the experienced customer value has been compared before and after a digitalization using the value proposition and the business model. Customer value is defined as the balance between the perceived benefits and sacrifices and the results show that the forest owners foremost perceive that a digitalization increase the functional and emotional benefits while the sacrifices considering psychological costs and personal investment decrease. The areas where customer value potentially can decrease due to a digitalization are decreased social benefits when the digital transactions exchanges the personal relationship and increased sacrifices in the shape of increased risks, foremost for customers with a low digital maturity.

    The forest owners are mainly positive to a digitalization, but since there are areas where the customer value potentially could decrease, it is not possible to design a complete value proposition only from customer surveys. The forest companies should rather work agile and stepwise implement small digital changes, performing pilot studies before introduction. Initially the forest companies should focus on digital tools and to inquiry quotes and counselling through digital channels, as the customers perceive the highest value in these digital changes. Furthermore, the forest companies should facilitate and rationalize the work of the wood buyers by giving them an integrated and mobile tool that collects CRM-system, quote tools, and wood measuring tools, both for streamlining and for customer value.

  • Harrius, Sofie
    et al.
    Linköping University, Department of Management and Engineering, Industrial Economics.
    Engman, Nils
    Linköping University, Department of Management and Engineering, Industrial Economics.
    Att uppmuntra kunskapsdelning: En fallstudie om styrparametrars påverkan på kunskapsdelning inom en konsultkoncern2017Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Knowledge management has become increasingly important in organizations and how knowledge can be developed, shared and maintained has been researched more in recent years. The question of whether knowledge is seen as a competitive advantage has gained a great deal of focus in organizations instead of reviewing knowledge management. There are earlier studies that investigate the structure and organizational culture's impact on knowledge sharing in an organization but do not say how the factors affect knowledge sharing.

    The report examines how organizational structure and culture, as well as other management control parameters in a corporate group can affect the work with knowledge sharing, in which the observational data focus on interviews with employees of the company our case study focuses on. There is an ongoing implementation of a new knowledge sharing group at the company, which is used as a basis for this survey. A method is developed from Klein and Myers seven principles for interpretivism in case studies and Eisenhardt’s principles for theory building.

    A literature study based on Malmi and Brown's MCS factors investigates which parameters that could affect knowledge sharing in our case. The categories culture management, planning, cybernetic management, reward and compensation, and administrative management were factors considered relevant for our question formulation and are used as the basis for our interview formulation, as well as the literature used in our analysis.

    Our investigation model is used as a basis for a total of 22 interviews with employees within three different affiliate companies within the case company in which the knowledge sharing group covers. The study has four different questionnaires depending on the interviewee's position on the company and if they were involved in the new knowledge sharing group. The interviews include questions about the attitude and possibility of knowledge sharing at the case company and how the case company manages knowledge sharing. The answers where then analyzed based on the literature study and compared to what the staff of the different affiliate companies said and to what their position on the companies where. Based on this, a result is made.

    The study results show that an organization where members are at different geographical locations means that the natural contact between members is missing and that makes the exchange of knowledge more difficult. Communication within organizations is also affected by the geographical spread and can affect the amount of collaborations, where lack of communication within the organization leads to fewer collaborations, and thus lesser knowledge exchange. In addition to this, the organizational structure is affected by the degree of decentralization within organizations by influencing how decision-making is taken in the organization and who are able to influence decisions. The results also show that in a culture of cooperation, where culture is open and organizers help each other, it is easier to encourage knowledge sharing. Furthermore, it shows that cultural management in the form of clans and symbols can affect knowledge sharing by creating an open and familiar culture that encourages knowledge sharing. In order to encourage knowledge sharing in an organization with rewards or compensations, they need to be based on a measurement system that in some way is linked to the knowledge sharing. We see that personal motivation, which is not linked to measurement systems or rewards and compensation, can also affect how willing members of the organization are to share knowledge. Finally, knowledge sharing within groups can be locked in the existing patterns if there are strict rules on how to organize knowledge sharing groups, while no rules can make them unfocused and ineffective. We believe our results of the study coincides with the literature used.

  • Lundell, Tobias
    et al.
    Linköping University, Department of Management and Engineering, Industrial Economics.
    Forzelius, Magnus
    Linköping University, Department of Management and Engineering, Industrial Economics.
    Developing a Framework for Management Control Systems in Start-ups: How Management Control Systems can be used in fast-growing technology start-ups to support controlled growth2017Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    The purpose of this study was to find what appropriate Management Control Systems exist that can help fast-growing start-ups to achieve a controlled and healthy growth. We also studied how the control systems can be used together, and balanced between each other. To find appropriate control systems, we conducted a literature review of important factors for implementing management control, that ended with a tentative framework of control systems. After that, we conducted a multiple case study including several fast-growing technology start-ups to see how they use the collection of control systems in our tentative control framework, and analyzed what effect they have on the organization’s activities and how they balance between them. After the case study, a cross-case analysis was conducted were differences and similarities between the cases were analyzed and related to the theoretical concepts from the literature review. This led to conclusions regarding how start-ups tend to use and balance the control systems, which in turn led to the finalized control framework for fast-growing start-ups.

    The framework provides a set of control systems that start-ups can use that are relevant for supporting growth and managing the most common challenges that fast-growing start-ups face. By using different levers of control, the control systems complement each other and create a dynamic tension, which increases performance. For start-ups that are in a product development phase, the balance of the control systems is mostly on growth and innovation, which supports exploration of opportunities. However, there is still a little focus on control and efficiency to keep the organization focused. For start-ups with an already developed and commercialized product, the balance of control systems is more towards the middle. The most focus is put on growth and efficiency, with a little less emphasis on innovation and control. This is a way to keep an even balance between exploration of opportunities and exploitation of current resources. 

  • Persson, Jesper
    et al.
    Linköping University, Department of Management and Engineering, Logistics & Quality Management.
    Persson, Johanna
    Linköping University, Department of Management and Engineering, Logistics & Quality Management.
    Undersökning av kostnader som uppstår vid tillverkning av flera produktvarianter: En studie utförd på Axis Communications2017Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Today’s companies spend a significant amount of time and resources on increasing the number of product variants in their product range. The aim is to reach a wider segment of customers while maintaining a competitive position in the market. When developing new products, Axis Communications is often faced with the challenge of deciding whether to focus on one or more product variants. At present, focus is directed towards developing more product variants in the product range based on the price of direct material and the sales volume for each variant. Axis Communications therefore lacks knowledge of what additional factors that are affected when decisions about creating more product variants are taken.

    The purpose of the study is to provide a calculation model that can be used as a basis for analysing costs in producing more than one product variant. In order to achieve this purpose, the study has carried out two case studies based on two different products in Axis Communications product range. The first case study analyses the current state of production at Axis Communications’ contracted manufacturers, where costs that are affected by the production of multiple variants are identified and calculated. The second case study is a fictitious case study where the identified costs are calculated again, but only when one product variant is manufactured and the remaining product variants are disregarded. This was followed by an analysis regarding how the identified costs are affected when only one product variant is manufactured.

    Based on literature studies, the costs associated with the production of several variants have been identified. Furthermore, process flow charts have been developed and a study visit to one of Axis Communications contracted manufacturers was undertaken, where additional relevant costs have been identified and confirmed by persons with broad knowledge about the manufacturing processes. The costs identified to be affected the most by the variation of product variants are as follows:

    Direct incremental costs

    • Direct material
    • Inventory carrying costs
    • Setup costs
    • Fixture- and tooling costs

    Indirect incremental costs

    • Quality costs
    • Time to Market

    Investment costs

    • Resource costs for the development of mechanics
    • Resource costs for the development of electronics
    • Certification costs
    • Tooling costs
    • Costs for testing of production
    • Costs for prototyping

    The result for direct material showed that an average of the price of direct material as well as the forecasted production volume for each product variant can be assumed to create an initial perception of how much an increase of product variants actually costs.

    The inventory carrying cost also proved affected by the manufacturing of only one product variant. The inventory carrying cost decreased in the inventory of components but increased at the same time in the finished goods inventory since it is only the most expensive product variant with all functions compared to the other product variants that is being stored.

    The setup cost was eliminated since the setup times that occurred when changing product variants in the production disappeared. Furthermore, the cost of fixtures and tools was halved. The quality cost proved to be harder to quantify, however, it was realized that the higher the volume produced by a product variant the faster the product variant reaches the set quality goals, which in turn contributes to lower quality costs. Additionally, a lower number of product variants in the same production line means that handling becomes easier, including the risk of errors in assembling the product variant. It will also be easier to identify, prioritize and correct errors that may occur in the production line. This in turn leads to a reduction of quality costs.

    Time to Market was also affected when only one product variant was manufactured. Although Time to Market cannot be seen directly as a cost but rather as a loss of revenue, the study showed that it is faster to launch the product on the market if the number of product variants decreases. Finally, various investment costs were studied that could be linked to the production of several product variants, and the result showed that it is possible to reduce the investment costs if only one product variant is manufactured.

    Based on the outcome of the two case studies, a calculation model was designed for Axis Communications to help the company decide whether to manufacture product variants or not. The calculation model explains the costs that are affected the most by a change of number of product variants together with a description of how the costs are to be calculated. Using the calculation model will enable Axis Communications to make well-informed decision on whether or not to introduce more product variants in the product range.

  • Gyllenbreider, Emelie
    et al.
    Linköping University, Department of Management and Engineering, Environmental Technology and Management.
    Odencrants, Stina
    Linköping University, Department of Management and Engineering, Environmental Technology and Management.
    En miljö- och kostnadsjämförelse av insamlingssystem för källsortering närmare hushållen2017Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    To achieve the stricter material recycling goals in Sweden in 2020 plastic-, metallic- and paper packages need to be better sorted from the household waste. Household waste might have the highest environmental impact compared with other sorts of waste but household waste has the highest potential to lower its impact. Waste pick-up analysis from 67 percent of Sweden's municipalities between 2013 and 2016 show that a Swedish household waste contains 34.5 percent packaging and recycled paper that could be sorted for recycling. The producers of that material have the responsibility to collect it but it does not work as well as planned because of different circumstances. One way to increase the recycling of the material from the household waste and then achieve the material recycling goals is that municipalities offer simpler and increased service in the form of source sorting closer to the households.

    Previous studies have compared the systems of optical sorting and multi compartment bin, which offer separation at sources closer to the households. Moreover, those systems have been compared with the most common system in Sweden today, two bins, which do not involve increased service. The systems have not been compared with quantitative methods based on economics or the environment, nor with a new concept called district collection. This report has compared the four systems. The aspects that have been compared are the environmental aspects and economical aspects by using the tools lifecycle assessment and lifecycle cost assessment. Moreover, the systems have been fictive studied in an area in the municipality of Kristinehamn, in order to get closer to reality.

    The results indicate that the collection system district collection had the lowest environmental impact followed by multi compartment bin and then optical sorting. Moreover, the system with two bins has the highest impact in the studied environmental impact categories according to the assumptions that have been applied in the study. The lifecycle assessment indicates that the benefits with material recycling is higher than the environmental impacts of increased transportation. The system with lowest lifecycle cost is the system with two bins and then the district collection. The system with highest lifecycle cost is the system optical sorting and the system with the second highest cost is multi compartment bin according to the assumptions that have been applied in the study. One conclusion from the study is that it is important to investigate more aspects than environmental impact and costs when to decide collection system. It is because the results depends on the other aspects as well like the users experience about the system.

  • Sternelöv, Gustav
    Linköping University, Department of Computer and Information Science, The Division of Statistics and Machine Learning.
    Analysis of forklift data – A process for decimating data and analyzing fork positioning functions2017Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Investigated in this thesis are the possibilities and effects of reducing CAN data collected from forklifts. The purpose of reducing the data was to create the possibility of exporting and managing data for multiple forklifts and a relatively long period of time. For doing that was an autoregressive filter implemented for filtering and decimating data. Connected to the decimation was also the aim of generating a data set that could be used for analyzing lift sequences and in particular the usage of fork adjustment functions during lift sequences.

    The findings in the report are that an AR (18) model works well for filtering and decimating the data. Information losses are unavoidable but kept at a relatively low level, and the size of data becomes manageable. Each row in the decimated data is labeled as belonging to a lift sequence or as not belonging to a lift sequence given a manually specified definition of the lift sequence event. From the lift sequences is information about the lift like number of usages of each fork adjustment function, load weight and fork height gathered. The analysis of the lift sequences gave that the lift/lower function on average is used 4.75 times per lift sequence and the reach function 3.23 times on average. For the side shift the mean is 0.35 per lift sequence and for the tilt the mean is 0.10. Moreover, it was also found that the struggling time on average is about 17 % of the total lift sequence time. The proportion of the lift that is struggling time was also shown to differ between drivers, with the lowest mean proportion being 7 % and the highest 30 %. 

  • Wahlman, Fredrik
    Linköping University, Department of Computer and Information Science.
    Design Ethnography and Service Design Thinking on Triadic Relationships in Product-Service Systems2017Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    This study has used design ethnography and service design thinking to understand triadic relationships in product-service systems. The data used in this research has been collected in an explorative user research phase of an overarching service design project at Scania CV. The service design project was of purpose to apply a user-centered design approach to investigate Scania Driver Services.

    The study finds Design Ethnography and Service Design Thinking as fruitful in understanding triadic relationships in product-service systems, but also identify challenges that require further exploration in order to enable the best possible value-propositions.

    The study contributes to understanding what kind of knowledge that applying design ethnography and a service design thinking approach to understand triadic relationships in product-service systems concern. A summary of knowledge identified is presented below.

    Understanding and knowledge concern:

    • Contradictions between the purchaser and end-user perception.

    • Actor perception of another actor(s).

    • Actor perceived evolution of another actor over time.

    • Actor change of view due to its own evolution.

    • Relationships of the service provider, purchaser and end user.

    • Misconceptions between actors.

    • Variation in communication between actors.

    • What the communication between actors is perceived to concern.

    • Additional actors than initially considered that are crucial for understanding the triadic

    relationship.

  • Cerny, David
    et al.
    Linköping University, Department of Computer and Information Science.
    Andersson, Erik
    Linköping University, Department of Computer and Information Science.
    Arve, Fredrik
    Linköping University, Department of Computer and Information Science.
    Falk, Linus
    Linköping University, Department of Computer and Information Science.
    Hergart, Johan
    Linköping University, Department of Computer and Information Science.
    Lidquist, John Andrée
    Linköping University, Department of Computer and Information Science.
    Serebrink, Rikard
    Linköping University, Department of Computer and Information Science.
    Waldenbäck, Tim
    Linköping University, Department of Computer and Information Science.
    Utformning och implementering av en webbapplikation med god navigerbarhet2017Independent thesis Basic level (degree of Bachelor), 12 credits / 18 HE creditsStudent thesis
    Abstract [en]

    According to a study made at Linköping University, there are few options besides self-catered food and buying food at a restaurant. According to the same survey, a majority of the students seek further options in the market. A proposed solution, tested here, is to develop a platform for selling and buying homemade food through a web application. Development takes place in iterations where design and functionality are supported by scientific theory. Changes are based on qualitative opinions from user tests at the end of each iteration. The work is specifically aimed at creating a design with associated features that allow quick navigation to the desired transaction while the user experiences a good navigability. The balance between navigability and time aspects has been central to the report and influenced all aspects of the web application's design. The report shows that it is possible to develop a web application according to the above criteria and identify what is essential for the users.

  • Friman, Sabina
    Linköping University, Department of Behavioural Sciences and Learning.
    Friskvård på jobbet: Ett sätt för medarbetare att lära och utvecklas2017Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Syftet med denna studie var att bidra med mer kunskap kring medarbetares syn på erbjudanden till fysisk aktivitet som ett hälsopromotivt arbete, samt hur de förhåller sig till friskvårdsbidraget. Detta har gjorts genom semi-strukturerade intervjuer med tio medarbetare på ett produktionsföretag i södra Sverige. Genom en allmän kvalitativ analysmetod kunde sex teman identifieras:

    Muntlig kommunikation är centralt, läridentitet och self-efficacy har betydelse, tidsbrist och skiftarbete kan hindra, privatekonomin kan hindra, socialt stöd är centralt, samt motivation från ledningen är centralt.

    Slutsatsen är att deltagande och nyttjande behöver förstås utifrån en rad olika faktorer där det sociala stödjandet från omgivningen, från såväl ledningen som medarbetare, är särskilt viktigt. Det fordras även ett strategiarbete där aktiv uppmuntran, muntlig kommunikation samt gemensamma hälsomål ges utrymme att integreras och prioriteras i samtliga delar av organisationen.

  • Nylin, Magnus
    Linköping University, Department of Computer and Information Science.
    When Colours Matter: A Case Study of Perceived Usability and Perceived Easiness of Adaptation among Air Traffic Controllers Being Presented to a New Colour Scheme in their ATM System2017Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Colours play an important role in our everyday life. Yet, it is something that we might not pay too much attention to, it is just there, even if we may have our favourite colours and likewise. However, sometimes the colours have a very specific meaning and is a medium of communication. One example of this is air traffic control systems as the one used in Sweden, Denmark, Austria, Ireland, and Croatia. However, despite using the same system, all but Denmark and Sweden use different colour schemes in the human computer interface of the radar screens. A decision was taken within the common organisation, COOPANS, to change this and harmonize the colour scheme, but how will that be received by the users, the air traffic controllers? This thesis aimed at investigating how usable the controllers in the different countries, except Croatia, found the new colour scheme and how easy they thought it would be to adapt to. The question was how this was affected by the fact they are using different colour schemes today? Data was collected with questionnaires during simulations in high fidelity simulator platforms at the air traffic control centres in Malmö, Copenhagen, Vienna, and Shannon. It was found that there were some differences between the sites which could not be explained by the controlled for factors, age, gender, and experience. Among the differences found, one was that the perceived usability differed between controllers in Malmö and Copenhagen respectively. Hence, since they are using the same colours today, the differences seem to be a result of expectations and opinions about the current colour schemes rather than exactly which colour scheme that are currently used. There was also a trend that the opinions from the first impression seemed to be reinforced within the group during the simulation. The major differences however were found to be on individual level.

  • Karlsson, Rikard
    Linköping University, Department of Computer and Information Science, Human-Centered systems.
    Utvärdering av kvalitetsregistret och processtödssystemet Carath2017Independent thesis Basic level (degree of Bachelor), 12 credits / 18 HE creditsStudent thesis
    Abstract [sv]

    Studien genomförs i syfte att utvärdera hur arbetsflödet i sjukvårdssystemet Carath är anpassat efter rutiner hos användarna på de thoraxkliniker som äger systemet och där det används. Tre arbetsplatsundersökningar och elva stycken intervjuer genomfördes med sjukhuspersonal på olika kliniker i Sverige med metoden kontextuell design.

    Resultaten från studien visar att Carath är anpassat efter patientflödet på klinikerna men i mindre grad anpassat efter användares arbetsrutiner och roller. Studien visar även på att systemet saknar inbyggd hantering för återkoppling och kontroller av registrerad data. Dessa funktioner utförs istället manuellt utanför systemet. Samtliga av de saknade funktionerna bekräftas även genom SEIPS-modellen som funktioner som är rekommenderbara inom ett sjukvårdssystem. Sammantaget visar resultatet från kontextuella intervjuer med kommentarer från personal, genererade sekvensmodeller över arbetsflöden och utvärderingar mot SEIPS-modellen att Carath skulle behöva balanseras mellan patientflöde och personalens arbetsflöde. Funktioner för återkoppling och kontroll skulle integreras i systemet. Framtida arbete innefattar en undersökning kring integration mot andra system inom sjukvården.

  • Ihs Håkansson, Ellinor
    Linköping University, Department of Computer and Information Science.
    Genreanalys på internetbaserad kognitiv beteendeterapi-behandling.2017Independent thesis Basic level (degree of Bachelor), 12 credits / 18 HE creditsStudent thesis
    Abstract [sv]

    Det projekt som redogörs i denna rapport var en del av ett samarbete mellan Psykologpartners och Linköpings Universitet. Projektet innefattade att genomföra en genreanalys på fyra olika KBT-behandlingssidor. Dessa var olika typer av depressionsbehandlingar på hemsidorna KBTonline, 1177, Iterapi och Livanda. Syftet med projektet var att ta fram förslag för att underlätta framtida utveckling av designen på internetbaserade KBT-behandlingssidor.

    För att undersöka hemsidorna användes metoden genreanalys för interaktionsdesign där först och främst målen med analysen identifierades och definierades. Därefter undersöktes produktens form, innehåll och syfte för att sedan extrahera likheter och skillnader mellan hemsidorna utifrån dessa tre element. De sista stegen var att samla ihop data som extraherats av undersökningen och presentera det för att till sist dra slutsatser utifrån det.

    De resultat som extraherades av denna analys var hur hemsidorna såg ut samt hur de var strukturerade, hur alla övningar var uppbyggda samt vad de innehöll, vad för olika medietyper de använde och till sist hur väl mobilanpassade de var. Bland annat var de förslag som togs fram att ha någon slags funktion som hjälper användaren att veta var i behandlingen hen är, att variera ifyllningsmöjligheterna och att ändra vissa övningar för att anpassas till mobilens storlek.

  • Sävenhed, Jonatan
    et al.
    Linköping University, Department of Computer and Information Science, Software and Systems.
    Resman, Elias
    Linköping University, Department of Computer and Information Science, Software and Systems.
    Xcontrol: Kontroll av kommunikation i API:er2017Independent thesis Basic level (university diploma), 10,5 credits / 16 HE creditsStudent thesis
    Abstract [sv]

    Fler standardiserade API:er (Application Programming Interface) växer fram, detta underlättar införande av informationsbyten mellan system, eftersom det är samma API som visas utåt oavsett vilket system som finns bakom. En nackdel med detta är att det kan växa fram många och komplexa kopplingar mellan API:er och olika system då de kommunicerar via internet, det är då viktigt att inte förlorar kontroll. Med kontroll menas att hålla reda på all kommunikation mellan API:erna och systemen. Fördelar med detta är att bättre prestanda kan uppnås, undersöka belastning och göra felsökning lättare samt att det medför att företaget sparar både tid och pengar.

    Detta arbete handlar om att ta fram ett produktförslag som vi har valt att kalla Xcontrol. Xcontrol:s uppgift är att vara en mellanhand mellan fastighetssystem och olika tjänster till dessa fastighetssystem, systemen kommunicerar med hjälp av ett API kallat fastAPI. Produktförslaget innehåller en översikt på hur arkitekturen kan se ut och förslag på vilka funktioner som kan finnas i Xcontrol.

    I rapporten beskrivs också hur en av dessa funktioner implementeras, vilket är loggning av internettrafiken mellan systemen. Där beskrivs designen av databasen, hur man tar emot och skickar vidare information mellan systemen samt hur man visar upp statistik av informationen med hjälp av grafer. Avslutningsvis diskuteras arbetets utförande, slutsatser och framtida arbete.

  • Olsson, Josefin
    Linköping University, Department of Computer and Information Science. Linköping University, Faculty of Arts and Sciences.
    Augmented reality i förskolan: Lärandeeffekter och emotioner vid användandet av applikationen Minnesmark2017Independent thesis Basic level (degree of Bachelor), 12 credits / 18 HE creditsStudent thesis
    Abstract [sv]

    Syftet med denna studie var att undersöka om AR-teknik uppmuntrar till lärande hos förskolebarn. Detta gjordes genom att utvärdera lärandet baserat på lärandeeffekter i form av ökad kunskap. Dessutom undersöktes barnens upplevelse och emotioner kopplade till lärandetillfället för att se om detta påverkade barnens resultat. För att uppnå syftet ställdes två frågeställningar: (i) Ökar barnens kunskap efter genomförd rundvandring med AR-applikationen Minnesmark? (ii) Finns det något samband mellan ökad kunskap och den självskattade upplevelsen av rundvandringen? För att besvara den första frågeställningen genomförde barnen ett kunskapstest innan och efter rundvandringen. Den andra frågeställningen besvarades med ett frågeformulär samt observationer under rundvandringen. Resultaten visade att barnen kunde signifikant mer på kunskapstestet efter rundvandringen, vilket tyder på ökad kunskap. Det fanns ingen korrelation mellan de mätta emotionerna och resultaten från kunskapstesterna, men observationerna tyder dock på att emotioner påverkar lärandet.

  • Shipitsyn, Aleksey
    Linköping University, Faculty of Arts and Sciences. Linköping University, Department of Computer and Information Science, The Division of Statistics and Machine Learning.
    Statistical Learning with Imbalanced Data2017Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    In this thesis several sampling methods for Statistical Learning with imbalanced data have been implemented and evaluated with a new metric, imbalanced accuracy. Several modifications and new algorithms have been proposed for intelligent sampling: Border links, Clean Border Undersampling, One-Sided Undersampling Modified, DBSCAN Undersampling, Class Adjusted Jittering, Hierarchical Cluster Based Oversampling, DBSCAN Oversampling, Fitted Distribution Oversampling, Random Linear Combinations Oversampling, Center Repulsion Oversampling.

    A set of requirements on a satisfactory performance metric for imbalanced learning have been formulated and a new metric for evaluating classification performance has been developed accordingly. The new metric is based on a combination of the worst class accuracy and geometric mean.

    In the testing framework nonparametric Friedman's test and post hoc Nemenyi’s test have been used to assess the performance of classifiers, sampling algorithms, combinations of classifiers and sampling algorithms on several data sets. A new approach of detecting algorithms with dominating and dominated performance has been proposed with a new way of visualizing the results in a network.

    From experiments on simulated and several real data sets we conclude that: i) different classifiers are not equally sensitive to sampling algorithms, ii) sampling algorithms have different performance within specific classifiers, iii) oversampling algorithms perform better than undersampling algorithms, iv) Random Oversampling and Random Undersampling outperform many well-known sampling algorithms, v) our proposed algorithms Hierarchical Cluster Based Oversampling, DBSCAN Oversampling with FDO, and Class Adjusted Jittering perform much better than other algorithms, vi) a few good combinations of a classifier and sampling algorithm may boost classification performance, while a few bad combinations may spoil the performance, but the majority of combinations are not significantly different in performance.

  • Larsson, Andreas
    Linköping University, Department of Computer and Information Science, Human-Centered systems.
    En prestandastudie på JSON-och XML-formaterad API-data2017Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    This paper aims to analyze the effects different data representation techniques have on the API generating the data, and the client receiving and processing it. For this purpose, the formats JSON and XML was chosen. In order to analyze the effects, an API was developed in order to generate realistic results. A simple client JavaScript website was created which requested the API for data in which it processed its response to a JSON- or XML-object depending on which test was conducted. The tests were separated in two sce-narios, where the used dataset was large or small respectively, represented in either JSON orXML. The client logged the time it took from the test’s beginning until all responses had been processed. The API-server measured the time it took from receiving the request until it was returned, as well as the system’s CPU- and virtual-memory usage.

    The study found that JSON-formatted data overall resulted in a more efficient opera-tion. In all test cases the processing time for both the client and server were smaller for the JSON-formatted data. However, for small datasets, the study showed that the XML-formatted data used a marginally smaller portion of the system’s resources, although the JSON-formatted data was still processed quicker.

  • Afram, Eliane
    Linköping University, Department of Culture and Communication.
    Ordinlärning i främmande språk: En forskningsöversikt om effekten av implicita och explicita metoder.2015Independent thesis Advanced level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    När man lär sig ett nytt språk så är det ytterst viktigt att kunna ha ett brett och varierat ordförråd. Elever somstuderar engelska som andraspråk eller främmandespråk, eller ett annat modern språk, ställs alltid inför kravet attexpandera sitt ordförråd. Uppsatsen ämnar ge en mer allmän klarhet och bringa förståelse för ordinlärningsprocessenoch dessutom undersöka vilken metod, implicit eller explicit, som leder till ett ökat ordförråd. En systematiskforskningsöversikt genomfördes, och totalt ingick 10 empiriska artiklar som analyserades och kategoriseradessystematiskt. Resultatet visade på en variation gällande studiernas slutsatser på viken metod som är effektivast.Däremot visar resultatet klart och tydligt vikten av att inkludera explicit metod i undervisningen för att effektiviseraordinlärningen speciellt vid läsning.

  • Kinberger, Emanuel
    Linköping University, Department of Computer and Information Science.
    Google Charts-baserad Business Intelligence-lösning för CGI Östergötland2017Independent thesis Basic level (degree of Bachelor), 10,5 credits / 16 HE creditsStudent thesis
    Abstract [sv]

    Det här arbetet utförs på uppdrag av CGI Östergötland. De har i dagsläget inget effektivt eller smidigt sätt att presentera mål och resultat från sina kundundersökningar. CGI önskar kunna filtrera data från undersökningarna och sedan visualisera dem på olika sätt. De önskar även reducera mängden manuellt arbete kring framställning av statistik. Man vill ha ett användarvänligt system för ändamålet. Syftet med arbetet är att implementera en fungerande prototyp av en dashboard enligt ovanstående önskemål. Arbetet utgick från ett Excel-ark med data som CGI tillhandahöll. NodeJs användes som backend, medans JavaScript, Ajax, HTML och Css användes som frontend, med Google Charts som visualiseringsverktyg. Dagbok fördes för att underlätta arbetsprocessen. En enklare hemsida med stapeldiagram implementerades, baserat på data från Excel-arket. Successiv utveckling av sökfunktionalitet, dynamisk färgsättning av diagram beroende på resultat i f.h. till mål och trenddiagram för att visualisera utveckling över tid. Diagram och mätare implementerades för att visualisera hur viktiga frågor besvarats av kunden. Vid eventuell vidareutveckling av produkten rekommenderas att reducera mängden av data som skickas mellan backend och frontend. Om man önskar lägga till ytterligare funktionalitet på dashboarden bör man även se över uppbyggnaden av HTML-sidan. Vidare borde man undersöka kompatibiliteten mellan Internet Explorer och Google Charts.

  • Martinson, Josefine
    et al.
    Linköping University, Department of Culture and Communication. Linköping University, Faculty of Arts and Sciences.
    Philipsson, Maria
    Linköping University, Department of Culture and Communication. Linköping University, Faculty of Arts and Sciences.
    Att läsa sig till skrivande: Hur skönlitteraturläsning och skrivande på ett kreativt sätt kan integreras i skolan2015Independent thesis Advanced level (degree of Master (One Year)), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Den här forskningsproducerande uppsatsen prövar två metoder där läsande av skönlitteratur och skrivande vävts samman. Syftet har varit att undersöka vad det ryms för möjligheter i ett arbetssätt där läsning av en skönlitterär bok integrerats med skrivuppgifter. I studien har läsning av Tove Janssons bok Vem ska trösta knyttet? fungerat som utgångspunkt då metoderna skriva sig in i litteraturen samt meddiktning prövats. Uppsatsens frågeställningar har handlat om hur de två metoderna ovan kan fungera som stöd i elevernas skrivande. Vidare har frågeställningarna behandlat hur den skönlitterära boken återspeglas i elevernas texter samt vilka likheter och skillnader som går att finna mellan texterna som eleverna på de två stadierna skrivit. Datainsamlingen har genomförts i en årskurs tre i grundskolan samt en årskurs tre i gymnasiet och elevernas texter har sedan analyserats utifrån olika teman. Till att börja med ges en teoretisk ram som bland annat presenterar olika sätt på vilka läsning och skrivande kan användas integrerat. Därefter redogörs för undersökningens resultat med många exempel från elevtexter. Som avslutning diskuteras resultatet i relation till tidigare presenterad litteratur. Uppsatsens slutsatser är att metoderna skriva sig in i litteraturen samt meddiktning har fungerat som stöd och inspiration i elevernas textskapande. Det har skett genom att båda metoderna innefattat någon form av modelltext som hjälpt eleverna i deras skrivande. Ytterligare en slutsats är att den skönlitterära boken haft effekt på elevernas egna texter. Slutligen är den tydligaste likheten mellan de två årskurserna att de flesta eleverna haft förmåga att gestalta sin egen inre röst. Den tydligaste skillnaden är att de äldre eleverna med hjälp av större metaspråklig förmåga kunnat skapa mer självbärande texter än de yngre eleverna. 

  • Törnqvist, Alexander
    Linköping University, Department of Culture and Communication.
    Språkanvändning och förståelsekonstituering vid lärande: Ett studium om alternativ till den sociokulturella teorin inom pedagogik2016Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    I denna uppsats avhandlas alternativ till det sociokulturella perspektivet inom lärande och språkutveckling om hur förståelse konstitueras. Denna syn på språket grundar sig i Ludwig Wittgensteins teorier om till exempel språkspel som utvecklat en språktradition som kallas fenomenografi. Det fenomenografiska perspektivet ta i beaktande den föregående lärandeprocessen i medvetandet om hur konceptualisering av förståelse konstitueras. Detta är vad som inom filosofin kallas intentionalitet. Språket kan inte förstås utifrån en förutbestämd vokabuläranvändning eller logiska ideal. Inlärning borde istället förstås utav hur språket används i en kontext i en konkret användning. Förståelse blir därför något som inte går att utforska utifrån sociala relationer eller ideala lösningar.