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  • 351.
    Amouzgar, Kaveh
    University of Skövde, School of Engineering Science. University of Skövde, The Virtual Systems Research Centre.
    Metamodel Based Multi-Objective Optimization with Finite-Element Applications2018Doctoral thesis, comprehensive summary (Other academic)
    Abstract [en]

    As a result of the increase in accessibility of computational resources and the increase of computer power during the last two decades, designers are able to create computer models to simulate the behavior of complex products. To address global competitiveness, companies are forced to optimize the design of their products and production processes. Optimizing the design and production very often need several runs of computationally expensive simulation models. Therefore, integrating metamodels, as an efficient and sufficiently accurate approximate of the simulation model, with optimization algorithms is necessary. Furthermore, in most of engineering problems, more than one objective function has to be optimized, leading to multi-objective optimization(MOO). However, the urge to employ metamodels in MOO, i.e., metamodel based MOO (MB-MOO), is more substantial.Radial basis functions (RBF) is one of the most popular metamodeling methods. In this thesis, a new approach to constructing RBF with the bias to beset a priori by using the normal equation is proposed. The performance of the suggested approach is compared to the classic RBF and four other well-known metamodeling methods, in terms of accuracy, efficiency and, most importantly, suitability for integration with MOO evolutionary algorithms. It has been found that the proposed approach is accurate in most of the test functions, and it was the fastest compared to other methods. Additionally, the new approach is the most suitable method for MB-MOO, when integrated with evolutionary algorithms. The proposed approach is integrated with the strength Pareto evolutionary algorithm (SPEA2) and applied to two real-world engineering problems: MB-MOO of the disk brake system of a heavy truck, and the metal cutting process in a turning operation. Thereafter, the Pareto-optimal fronts are obtained and the results are presented. The MB-MOO in both case studies has been found to be an efficient and effective method. To validate the results of the latter MB-MOO case study, a framework for automated finite element (FE) simulation based MOO (SB-MOO) of machining processes is developed and presented by applying it to the same metal cutting process in a turning operation. It has been proved that the framework is effective in achieving the MOO of machining processes based on actual FE simulations.

  • 352.
    Amouzgar, Kaveh
    et al.
    University of Skövde, School of Engineering Science. University of Skövde, The Virtual Systems Research Centre.
    Bandaru, Sunith
    University of Skövde, School of Engineering Science. University of Skövde, The Virtual Systems Research Centre.
    Andersson, Tobias J.
    University of Skövde, School of Engineering Science. University of Skövde, The Virtual Systems Research Centre.
    Ng, Amos H. C.
    University of Skövde, School of Engineering Science. University of Skövde, The Virtual Systems Research Centre.
    A framework for simulation based multi-objective optimization and knowledge discovery of machining process2018In: The International Journal of Advanced Manufacturing Technology, ISSN 0268-3768, E-ISSN 1433-3015, Vol. 98, no 9-12, p. 2469-2486Article in journal (Refereed)
  • 353.
    Amouzgar, Kaveh
    et al.
    University of Skövde, School of Engineering Science. University of Skövde, The Virtual Systems Research Centre.
    Bandaru, Sunith
    University of Skövde, School of Engineering Science. University of Skövde, The Virtual Systems Research Centre.
    Andersson, Tobias J.
    University of Skövde, School of Engineering Science. University of Skövde, The Virtual Systems Research Centre.
    Ng, Amos H. C.
    University of Skövde, School of Engineering Science. University of Skövde, The Virtual Systems Research Centre.
    Metamodel based multi-objective optimization of a turning process by using finite element simulation2019In: ACM Transactions on Software Engineering and Methodology, ISSN 1049-331X, E-ISSN 1557-7392Article in journal (Refereed)
    Abstract [en]

    This study investigates the advantages and potentials of the metamodelbased multi-objective optimization (MOO) of a turning operation through the application of finite element simulations and evolutionary algorithms to a metal cutting process. The objectives are minimizing the interface temperature and tool wear depth obtained from FE simulations using DEFORM2D software, and maximizing the material removal rate. Tool geometry and process parameters are considered as the input variables. Seven metamodelling methods are employed and evaluated, based on accuracy and suitability. Radial basis functions with a priori bias and Kriging are chosen to model tool–chip interface temperature and tool wear depth, respectively. The non-dominated solutions are found using the strength Pareto evolutionary algorithm SPEA2 and compared with the non-dominated front obtained from pure simulation-based MOO. The metamodel-based MOO method is not only advantageous in terms of reducing the computational time by 70%, but is also able to discover 31 new non-dominated solutions over simulation-based MOO.

  • 354.
    Amouzgar, Kaveh
    et al.
    University of Skövde, School of Engineering Science. University of Skövde, The Virtual Systems Research Centre.
    Bandaru, Sunith
    University of Skövde, School of Engineering Science. University of Skövde, The Virtual Systems Research Centre.
    Andersson, Tobias
    University of Skövde, School of Engineering Science. University of Skövde, The Virtual Systems Research Centre.
    Ng, Amos H. C.
    University of Skövde, School of Engineering Science. University of Skövde, The Virtual Systems Research Centre.
    Metamodel based multi-objective optimization of a turning process by using finite element simulation2019In: Engineering optimization (Print), ISSN 0305-215X, E-ISSN 1029-0273Article in journal (Refereed)
    Abstract [en]

    This study investigates the advantages and potentials of the metamodelbased multi-objective optimization (MOO) of a turning operation through the application of finite element simulations and evolutionary algorithms to a metal cutting process. The objectives are minimizing the interface temperature and tool wear depth obtained from FE simulations using DEFORM2D software, and maximizing the material removal rate. Tool geometry and process parameters are considered as the input variables. Seven metamodelling methods are employed and evaluated, based on accuracy and suitability. Radial basis functions with a priori bias and Kriging are chosen to model tool–chip interface temperature and tool wear depth, respectively. The non-dominated solutions are found using the strength Pareto evolutionary algorithm SPEA2 and compared with the non-dominated front obtained from pure simulation-based MOO. The metamodel-based MOO method is not only advantageous in terms of reducing the computational time by 70%, but is also able to discover 31 new non-dominated solutions over simulation-based MOO.

  • 355.
    Amouzgar, Kaveh
    et al.
    University of Skövde, School of Engineering Science. University of Skövde, The Virtual Systems Research Centre.
    Bandaru, Sunith
    University of Skövde, School of Engineering Science. University of Skövde, The Virtual Systems Research Centre.
    Ng, Amos H. C.
    University of Skövde, School of Engineering Science. University of Skövde, The Virtual Systems Research Centre.
    Radial basis functions with a priori bias as surrogate models: A comparative study2018In: Engineering applications of artificial intelligence, ISSN 0952-1976, E-ISSN 1873-6769, Vol. 71, p. 28-44Article in journal (Refereed)
    Abstract [en]

    Radial basis functions are augmented with a posteriori bias in order to perform robustly when used as metamodels. Recently, it has been proposed that the bias can simply be set a priori by using the normal equation, i.e., the bias becomes the corresponding regression model. In this study, we demonstrate the performance of the suggested approach (RBFpri) with four other well-known metamodeling methods; Kriging, support vector regression, neural network and multivariate adaptive regression. The performance of the five methods is investigated by a comparative study, using 19 mathematical test functions, with five different degrees of dimensionality and sampling size for each function. The performance is evaluated by root mean squared error representing the accuracy, rank error representing the suitability of metamodels when coupled with evolutionary optimization algorithms, training time representing the efficiency and variation of root mean squared error representing the robustness. Furthermore, a rigorous statistical analysis of performance metrics is performed. The results show that the proposed radial basis function with a priori bias achieved the best performance in most of the experiments in terms of all three metrics. When considering the statistical analysis results, the proposed approach again behaved the best, while Kriging was relatively as accurate and support vector regression was almost as fast as RBFpri. The proposed RBF is proven to be the most suitable method in predicting the ranking among pairs of solutions utilized in evolutionary algorithms. Finally, the comparison study is carried out on a real-world engineering optimization problem.

  • 356.
    Amouzgar, Kaveh
    et al.
    University of Skövde, School of Engineering Science. University of Skövde, The Virtual Systems Research Centre. Product Development Department, School of Engineering, Jönköping University, Jönköping, Sweden.
    Strömberg, Niclas
    Department of Mechanical Engineering, School of Science and Technology, University of Örebro, Sweden.
    Radial basis functions as surrogate models with a priori bias in comparison with a posteriori bias2017In: Structural and multidisciplinary optimization (Print), ISSN 1615-147X, E-ISSN 1615-1488, Vol. 55, no 4, p. 1453-1469Article in journal (Refereed)
    Abstract [en]

    In order to obtain a robust performance, the established approach when using radial basis function networks (RBF) as metamodels is to add a posteriori bias which is defined by extra orthogonality constraints. We mean that this is not needed, instead the bias can simply be set a priori by using the normal equation, i.e. the bias becomes the corresponding regression model. In this paper we demonstrate that the performance of our suggested approach with a priori bias is in general as good as, or even for many test examples better than, the performance of RBF with a posteriori bias. Using our approach, it is clear that the global response is modelled with the bias and that the details are captured with radial basis functions. The accuracy of the two approaches are investigated by using multiple test functions with different degrees of dimensionality. Furthermore, several modeling criteria, such as the type of radial basis functions used in the RBFs, dimension of the test functions, sampling techniques and size of samples, are considered to study their affect on the performance of the approaches. The power of RBF with a priori bias for surrogate based design optimization is also demonstrated by solving an established engineering benchmark of a welded beam and another benchmark for different sampling sets generated by successive screening, random, Latin hypercube and Hammersley sampling, respectively. The results obtained by evaluation of the performance metrics, the modeling criteria and the presented optimal solutions, demonstrate promising potentials of our RBF with a priori bias, in addition to the simplicity and straight-forward use of the approach.

  • 357.
    Améen, Sophie
    University of Skövde, School of Health and Education.
    The effect of DLG knockout, vitamin D and probiotic treatment on Drosophila gene expression2018Independent thesis Basic level (degree of Bachelor), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Background: Colorectal cancer is one of the most frequently diagnosed cancers today. Dlg is a tumor suppressor gene commonly silenced in cancer cells. Many colorectal cancer patients are subject to vitamin D3 deficiency and/ or an altered microbiome. Treatment using vitamin D3 or probiotics shown decreased cellular proliferation, invasiveness and induction of apoptosis. This study aimed to knockdown Dlg and map genetic interactions coupled to Dlg downregulation using a Drosophila model. Vitamin D3 and probiotic treatments were performed to investigate mechanism of action and capacity for Dlg rescue.

    Result and discussion: After vitamin D3 treatment, PGRP-SB1 (p<0.0001) and Drsl2 (p<0.0003) expression was significantly increased. These genes are part of the immune related Toll pathway suggesting its activation. Dlg and Veli (p=0.0042) upregulation could tentatively be through vitamin D receptor regulation of Wnt-signaling pathway, or direct VDR interaction. Traf6 and MPK2 (p38α) (p=0.0049) expression increased after vitamin D3 treatment suggesting MPK2 activation through Traf6. Pro-apoptotic pathways through Fas or Bax and decreased survival through inhibition of Pi3K/Akt and Ras/Raf pathways are also possible outcomes of MPK2 activation. Probiotic treatment increased PGRP-SB1 (p<0.0001) without enhanced Drsl2 expression, possibly activating the Imd pathway. JNK-induced apoptosis through Erg (p<0.0001) induction was speculated and increased Dlg (p=0.0113) expression was seen after probiotic treatment.

    Conclusion: Vitamin D3 and probiotic treatments increased Dlg expression. Genes linked to polarity, growth and apoptosis were also enhanced suggesting various mechanisms of action. Further studies concerning knockdown and treatments are needed to fully understand the true mechanisms of action and interactions.

  • 358.
    Anasagasti Alberdi, Mikel
    University of Skövde, School of Technology and Society.
    Function Block Environment in Wise ShopFloor: Graphical User Interface2012Independent thesis Basic level (degree of Bachelor), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Nowadays, accomplishing real time information applications is one of the goals that customers are looking for in the market. Furthermore, two essential features are required in this society to ensure the success of these applications: reusability and interoperability. The new standard of Function blocks [FB] is one efficient way to reach them. This new standard, whose use has considerably  increased,  consists  of  a  large  number  of  functionalities  divided  into  distributed shorter  codes.  In  fact,  that  is  why  function  blocks  are  different  from  other  programming languages:   it   works  with   short   distributed   functionalities   interconnected   among   them. Therefore,  for  this  reason  function  blocks  are  used  in  distributed  automation  systems.  The function  block  standard  is  formally  specified  in  IEC  61499,  for  distributed  Industrial  Process Measurement  and  Control  Systems  (IPMCS).  It  is  worth  of  mentioning  that  function  blocks design is usually carried out graphically (interconnecting data and events within a FB network), whose clarity and easiness are always significant requirements, as in any visual system. On  the  other  hand,  web-based  application  development  is  getting  more  and  more  common during the last years because of its efficiency, portability and flexibility. It also provides many advantages to users, in real-time monitoring, real-time manufacturing, or even remote control. These are what companies are looking for in the 21st century. Nevertheless, combining web-based programming with function blocks can be the key to companies’ success.  This project consists of implementing a web-based function block environment for IEC 61499 compliant  control  systems  development.  It  would  be  a  proper  way  to  meet  the  above mentioned    customer    requirements    (efficiency,    portability,    flexibility,    reusability    and interoperability).  The  main  objective  of  the  five-month  project  is  to  develop  a  web-based function block environment with a user-friendly graphical interface. The challenges include:   - Carrying out research on Function Blocks and its run-time environment. -  Implementing  an  easy-to-use  graphical  interface  for  creating,  saving  and  editing different types of function blocks (basic FB, composite FB and applications). - Introducing iconic design and visual presentation of function blocks and connections via drag-and-drop. -  Developing  an  application  to  generate  eXtensible  Markup  Language  (XML)  files, allowing  the  exchange  of  files  between  different  tools  and  devices  of  different vendors. This web-based function block environment will be used at Volvo Cars and Sandvik AB as a part of  a  big  research  program.  It  is  anticipated  that  the  function  block  environment  will  be extended  and  applied  to  a  real-time  decision  support  system  for  walking  workers  where important events or tasks will be distributed to the right person at the right time.

  • 359.
    Ander, Jenny
    et al.
    University of Skövde, School of Engineering Science.
    Johansson, Matilda
    University of Skövde, School of Engineering Science.
    Utveckling av laddhandske för laddbara fordon2018Independent thesis Basic level (degree of Bachelor), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    During the autumn term of 2017, Jenny Ander and Matilda Johansson have performed a project in collaboration with Sea Ice AB in the course Degree Project in Integrated Product Development at the University of Skövde. Sea Ice AB is working on developing charging infrastructure systems for rechargeable vehicles with focus on end-user benefits, high quality and increasing sustainability for the environment.The company is aiming to grow larger in the market and, in the future, be able to deliver attractive products and services, which in this project has involved the development of a new vehicle connector for rechargeable vehicles.

    During the project, vehicle connectors and CEE-plugs have been compared with each other, focusing on its internal components. The pre-study is based on literature studies where standards have been studied, ergonomics and user studies, questionnaires, electrical measurements, but mainly disassembly and analysis of vehicle connectors and CEE-plugs.

    After the pre-study, the concept development of the vehicle connector began with design methods, FEA-analyzes, CAD and clay modeling, concept screening and detail design. The concept development resulted in a complete final concept for both internal components, but also an external shell with ergonomic grip surfaces and angles.

    The final concept has been compared to the requirement specification and achieved the requirements set for the project, with some reservation for continued development. The vehicle connector has a unique and appealing appearance and meets the demands that both users and Sea Ice AB whished for.

  • 360.
    Anders, Gianluca
    University of Skövde, School of Health and Education.
    Analysis of the effects of LIN7A and LIN7C upregulation and knockdown in neuroblastoma cells2018Independent thesis Basic level (degree of Bachelor), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Background: LIN7 are a group of proteins that play a pivotal role in membrane protein localization and are thus important for cell adhesion and polarity. LIN7 proteins are shown to be important in neuroblastoma outcome, possibly through interactions with Disc-Large proteins (DLG). DLG2 has been shown to directly affect the regulation of LIN7A. Previous studies into the role of LIN7 have given conflicting results as to its nature.

    Methods: In this study we transfected LIN7A and LIN7C in SK-N-AS cells through the use of plasmids for upregulation and siRNA for knockdown of these genes. We also evaluated the expression levels of specific genes related to pathways such as PI3K, autophagy/lysosomal activity, AKT, etc., both independently and related to LIN7 expression through the R2 platform. Genes of interest were selected and then analyzed through qPCR.

    Results: Many of the genes that were significantly correlated when compared to LIN7A/C through R2 showed no significant expression correlation after experimentation. Some more functionally close genes to LIN7 were affected in a more predictable way such as CASK being upregulated after LIN7 knockdown, PTEN being downregulated upon LIN7 plasmid transfection while others such as FOXO3 also showed significant alterations.

    Conclusion: Many of the pathways discussed in this study are better studied through protein analysis due to the nature of the function of LIN7 proteins, however some downstream transcript changes were analyzed. Unexpectedly, the knockdown of both LIN7A and LIN7C displayed similar behavior to upregulation of LIN7A or LIN7C, possibly meaning that extreme expression differences have similar regulatory outcomes for some affected genes.

  • 361.
    Anders, Patrizia
    University of Skövde, School of Humanities and Informatics.
    A bioinformaticians view on the evolution of smell perception2006Independent thesis Advanced level (degree of Master (One Year)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Background:

    The origin of vertebrate sensory systems still contains many mysteries and thus challenges to bioinformatics. Especially the evolution of the sense of smell maintains important puzzles, namely the question whether or not the vomeronasal system is older than the main olfactory system. Here I compare receptor sequences of the two distinct systems in a phylogenetic study, to determine their relationships among several different species of the vertebrates.

    Results:

    Receptors of the two olfactory systems share little sequence similarity and prove to be a challenge in multiple sequence alignment. However, recent dramatical improvements in the area of alignment tools allow for better results and high confidence. Different strategies and tools were employed and compared to derive a

    high quality alignment that holds information about the evolutionary relationships between the different receptor types. The resulting Maximum-Likelihood tree supports the theory that the vomeronasal system is rather an ancestor of the main olfactory system instead of being an evolutionary novelty of tetrapods.

    Conclusions:

    The connections between the two systems of smell perception might be much more fundamental than the common architecture of receptors. A better understanding of these parallels is desirable, not only with respect to our view on evolution, but also in the context of the further exploration of the functionality and complexity of odor perception. Along the way, this work offers a practical protocol through the jungle of programs concerned with sequence data and phylogenetic reconstruction.

  • 362.
    Andersdotter, Hanna
    University of Skövde, Department of Computer Science.
    Important building blocks of an Architectural Description Language2002Independent thesis Basic level (degree of Bachelor)Student thesis
    Abstract [en]

    Software Architectures is an area that started to develop in the beginning of the 1990's. Through Software Architectures, software engineering developers have new improved opportunities for reusing, understanding, communication, analysis etc. To describe Software Architectures, Architecture Description Languages (ADLs) were proposed in the middle of the 1990's. There is not yet any common well-accepted definition of what an ADL really is. There are two tracks however; the first consider that an ADL's primary role is to provide formal syntax and a lower level of semantics; the second approach means that communication and understanding is the most important part for an ADL to play.

    Because of the lack of a common definition, numerous ADLs have been developed, each with their own strengths and weaknesses and all reflecting their developers' view on what an ADL is. The problem with these ADLs is that they work in a standalone fashion and can not use the facilities of the other ADLs. ACME has been developed to solve this problem. ACME is an Architecture Description Interchange Language, which means that it can serve as a bridge between different ADLs, i.e. that one ADL can use the features of another ADL.

    There are some software engineering researchers that consider ACME not to be an ADL, since ACME is the least common denominator of the present ADLs and is according to the researchers therefore not an ADL in itself. Therefore, in this report we will first compare ACME with other ADLs, and then present what features ACME needs to add to its environment to become an ADL.

  • 363.
    Andersen, Michael
    et al.
    Danish Fishermen’s Association Fredericia, Denmark.
    Arula, Timo
    University of Tartu, Estonia.
    Casini, Michele
    Swedish University of Agricultural Sciences, Sweden.
    Clink, Sally
    Baltic Sea Regional Advisory Council, Denmark.
    Collie, Jeremy
    University of Rhode Island, USA.
    Eckeskog, Magnus
    The Fisheries Secretariat (FISH), Sweden.
    Eero, Margit
    DTU Aqua - National Institute of Aquatic Resources, Denmark.
    Eriksson, Pehr E.
    Swedish Fisherman’s Federation Fiskets Hus, Sweden.
    Gasyukov, Pavel
    AtlantNIRO, Russian Federation.
    Gröhsler, Thomas
    Thünen Institute of Baltic Sea Fisheries (TI-OF), Germany.
    Holmgren, Noél
    University of Skövde, School of Life Sciences. University of Skövde, The Systems Biology Research Centre.
    Horbowy, Jan
    National Marine Fisheries Research Institute, Poland.
    Howell, Daniel
    Institute of Marine Research, Norway.
    Jepsena, Ilona
    European Commission, Directorate for Maritime Affairs and Fisheries, Belgium.
    Johansson, Reine J.
    Swedish Fishermen´s Federation, Sweden.
    Janusas, Stanislovas
    European Commission Directorate for Maritime Affairs and Fisheries, Belgium.
    Kaljuste, Olavi
    Swedish University of Agricultural Sciences, Sweden.
    Karpushevskiy, Igor
    AtlantNIRO, Russian Federation.
    Klaas, Kunnar
    Ministry of the Environment of Estonia, Estonia.
    Kornilovs, Georgs
    Institute of Food Safety, Animal Health and Environment (BIOR), Latvia.
    Krumme, Uwe
    Thûnen Institute of Baltic Sea Fisheries (TI-OF), Germany.
    Linke, Sebastian
    University of Gothenburg, Sweden.
    Lövgren, Johan
    Swedish Unniversity of Agricultural Sciences, Sweden.
    Luzenczyk, Anna
    National Marine Fisheries Research Institute, Poland.
    Maguire, Jean-Jacques
    International Council for the Exploration of the Sea, Canada.
    Neuenfeldt, Stefan
    DTU Aqua - National Institute of Aquatic Resources, Denmark.
    Norrström, Niclas
    University of Skövde, School of Life Sciences. University of Skövde, The Systems Biology Research Centre.
    Oeberst, Rainer
    Thünen Institute of Baltic Sea Fisheries (TI-OF), Germany.
    Plaganyi, Eva
    CSIRO Marine and Atmospheric Research (CMAR), Australia.
    Plikshs, Maris
    Institute of Food Safety, Animal Health and Environment (BIOR), Latvia.
    Raid, Tiit
    Estonian Marine Institute, University of Tartu, Estonia.
    Reeves, Stuart
    European Commission Directorate for Maritime Affairs and Fisheries , Belgium.
    Rindorf, Anna
    DTU Aqua - National Institute of Aquatic Resources, Denmark.
    Storr- Paulsen, Marie
    DTU Aqua - National Institute of Aquatic Resources, Denmark.
    Strehlow, Harry V.
    Thünen Institute of Baltic Sea Fisheries (TI-OF), Germany.
    Vinther, Morten
    DTU Aqua - National Institute of Aquatic Resources, Denmark.
    Walther, Yvonne
    Swedish University of Agricultural Sciences, Sweden.
    Report of the Benchmark Workshop on Baltic Multispecies Assessments (WKBALT): 4–8 February 2013, Copenhagen, Denmark2013Report (Refereed)
  • 364.
    Andersen, Tanja
    et al.
    University of Skövde, School of Life Sciences.
    Sundesjö, Johanna
    University of Skövde, School of Life Sciences.
    Att främja sömn hos intensivvårdspatienter: En litteraturöversikt2010Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Bakgrund: Sömnen är ett grundläggande behov hos människan och är därför viktig att tillgodose inom sjukvården. Ändå är sömnstörningar ett vanligt problem bland patienter i sjukhusmiljö och särskilt inom intensivvården. Sömnstörningar på en intensivvårdsavdelning orsakas ofta av frekventa omvårdnadsinsatser, behandlingar, sjukdomstillstånd samt högljudd och ovan miljö. Detta kan leda till både psykiska och fysiska konsekvenser så som försämring av immunförsvar, minskad produktion av tillväxthormoner, förlängt sjukdomsförlopp, humörförändringar och upphov av IVA-syndrom. Därför är det viktigt att vårdpersonal får kunskap om hur de bäst arbetar för att främja dessa patienters sömn. Syfte: Syftet med studien är att sammanställa och belysa forskning som beskriver omvårdnadsåtgärder och strategier för att främja sömn hos patienter inom intensivvården. Metod: En litteraturöversikt där 15 kvalitativa och kvantitativa studier analyserades. Resultat: Resultatet redogör för de tre områden som framkom ur dataanalysen och beskriver hur omvårdnadspersonal kan hjälpa patienter inom intensivvård till en bättre sömn. Dessa tre områden var: förändring av personalens arbetssätt genom utbildning, miljöförbättringar samt omvårdnadsåtgärder. Diskussion: Flera effektiva åtgärder finns presenterade i dagens forskning men fortfarande lider intensivvårdspatienter av sömnstörningar vilket gör det angeläget att fortsätta forskningen kring sömnförbättrande åtgärder hos denna patientgrupp.

  • 365.
    Andersparr, Rasmus
    University of Skövde, School of Informatics.
    Musik i rollspel: Till vilken grad påverkar musik spelinlevelsen i ett pen and paper RPG?2017Independent thesis Basic level (degree of Bachelor), 20 credits / 30 HE creditsStudent thesis
    Abstract [sv]

    Det här examensarbetet har haft som mål att undersöka till vilken grad musik påverkar spelinlevelsen i ett penna och papper RPG. Spelinlevelsen har delats upp i fyra olika nivåer för att lättare kunna se skillnader mellan spel med eller utan musik. En enkät användes för att mäta spelinlevelsen, denna är validerad och tagen ifrån en tidigare studie om spelinlevelse dock med vissa modifikationer gjorda. Studien jämförde två olika grupper som fick spela två 45 minuters sessioner av rollspelande, där ena gruppen hade musik och den andra inte. Resultatet ger indikationer på att musik kan vara en faktor för att ge högre spelinlevelse dock behövs mer data för att kunna definitivt ge ett svar.

  • 366.
    Andersson , Jessica
    et al.
    University of Skövde, School of Humanities and Informatics.
    Frisén, Anna
    University of Skövde, School of Humanities and Informatics.
    Trygg på skolgården?: En kvalitativ studie om faktorer som skapar trygghet och otrygghet enligt yngre elever.2008Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    According to the steering documents it is the teacher's responsibility to make every student feel safe. The aim is that through interviews with students in grades 2-3 from the focus groups show the factors that can provide security and insecurity in a schoolyard, in order to provide identifying factors that affect students' perception of security and insecurity. We also want to examine whether there are specific areas that constitute potential risk zones for students.

     

    We began by doing a pilot study to test the questions. Subsequently we conducted interviews with students in grades 4-5. We have used a qualitative approach with focus interviews. Five focus interviews with five students at each interview were performed.

     

    Our results show several factors that students either felt created security or insecurity. The factors identified as contributing to security was confirmation from friends, the game creates community, the size of the schoolyard and space for play, access to playmaterial, freedom to choose the activity and the teachers' presence. Factors that contributed to the insecurity was a fight, exclusion, vehicular and teachers' absence. Results also show where there is potential danger zones for students. Finally, the conclusions drawn about how security is tied to social interaction and a categorization of student statements from entirely safe to precarious was made.

     

    In the discussion we reflect on the method chosen. Then discussed the results and the literature in relation to the problems that can arise when working with different students. Although the social interaction positive advantages and disadvantages discussed utanförskapets and the pedagogical implications affecting friend relations and conflict resolution. Finally, suggestions for further research.

  • 367.
    Andersson, Alina
    et al.
    University of Skövde, School of Health and Education.
    Larsson, Lisa
    University of Skövde, School of Health and Education.
    Patienterns upplevelser av behandlingar vid hematologisk cancer: En kvalitativ studie av bloggar2015Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Background: To go through treatment against haematological cancer means a big change in the daily life. Symptoms and side effects makes a big impact on both body and soul. Haematological cancer includes, in this study, three different types of cancer: leukemia, lymphoma and myeloma. The treatments given for haematological cancer involves stem cell transplant, radiation therapy and chemo therapy. Purpose: The purpose with this study was to describe patients’ experiences during treatments for haematological cancer. Method: The data was analyzed through a qualitative analysis of the context. Data were collected from six blogs. Result: Three categories emerged from the analysis; the new situation of the patients everyday life, the emotional rollercoaster and continuously comply with the body's limitations, with seven sub-categories. Conclusion: The result of this study has contributed with further knowledge about persons living with haematological cancer. This knowledge can help nurses give these patients a good, patient-centered care and raise their well-being.

  • 368.
    Andersson, Amanda
    et al.
    University of Skövde, School of Health and Education.
    Aronsson, Aina
    University of Skövde, School of Health and Education.
    Upplevelser av att leva med bipolär sjukdom: En självbiografisk studie2017Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Background: Bipolar disorder is a chronic disease that entails suffering for the individual. The disease characterized by recurrent manic and depressive episodes. It affects the individual's lifeworld and his or her's health experience. The nurse has a significant role to support these patients.

    Aim: The aim is to describe patients' experiences of living with bipolar disorder.

    Method: A qualitative method was used and was based on six autobiographies analyzed with meaning analysis.

    Results: The results showed five themes. These are: the experience of living in the pitch-black darkness and the clearest light, the experience of shame, the experience of losing control of their life, the experience of fear and the sense of safty and support to reduce loneliness.

    Discussion: People with bipolar disorder experience both health and illness, depending on their current state of disease. The family and society have an impact on how the individual experience their existence. With support from a nurse the person can achieve control of the disease. Their reality is constantly changing and support from a nurse is important.

    Conclusion: People with bipolar disorder experience strong emotions that affect their lives. For people to feel seen and recognized the nurse must show candidness to the individual's unique lifeworld.

  • 369.
    Andersson, Anders
    University of Skövde, School of Humanities and Informatics.
    Dynamiska gränssnitt för dataspel2007Independent thesis Basic level (degree of Bachelor), 20 credits / 30 HE creditsStudent thesis
    Abstract [sv]

    Denna rapport beskriver utformningen, implementationen och utvärderingen av en arkitektur för dynamisk hantering av grafiska gränssnitt. Den dynamiska hanteringen handlar om möjligheten att ladda in och ladda ur gränssnitt som är specificerade i dokument utan att starta om spelet.

    Arkitekturen realiserades genom att implementera ett system i C++. Resultatet blev ett fullt fungerande system som klarar att hantera flera gränssnittsdokument dynamiskt. Dokumenten som hanteras av systemet är skrivna i XML format som fungerar väl för beskrivning av gränssnitt.

    Arbetet kommer fram till att förutom möjligheten att beskriva gränssnitt i form att kontroller och deras egenskaper behövs ett system för att hanterade händelser i gränssnittet. T.ex. när en knapp trycks så ska något hända. Därför undersöks möjligheterna för specifikation av händelsehantering i dokumentformatet. Utvecklingen av denna hantering når dock inte långt, detta arbete skrapar bara på ytan av problematiken.

  • 370.
    Andersson, Andreas
    University of Skövde, Department of Computer Science.
    Otydligheter i beskrivningen av Use Case-tekniken i UML 1.32001Independent thesis Basic level (degree of Bachelor)Student thesis
    Abstract [sv]

    Use Case-tekniken används för kravutvinning under RE-processen. Under RE-processen utvinns och dokumenteras krav på det nya systemet. I detta arbete undersöks vilka oklarheter systemutvecklare som använder Use Case-tekniken upplever med beskrivningen av denna teknik.

    Hur Use Case-tekniken utvecklats och vilken kritik som riktats mot tekniken beskrivs även detta i arbetet.

    Undersökningen utgår ifrån hur de systemutvecklare som använder tekniken upplever att denna är beskriven och utfördes med enkäter och intervjuer.

    Svaret på undersökningen är att de systemutvecklare som använder Use Case-tekniken upplever att denna som helhet är tydligt beskriven. På detaljnivå upplever dock de svarande att teknikens beskrivning:

    * saknar stöd för på vilken nivå Use Cases skall utformas,

    * saknar bra exempel,

    * inte har tillräckligt fokus på syftet med Use Cases,

    * saknar stöd för hur Use Cases skall utformas,

    * inte beskriver skillnaden mellan generalisering och <<extend>>

    * inte beskriver skillnaden mellan <<include>> och <<extend>> tillräckligt väl.

  • 371.
    Andersson, Anna
    University of Skövde, School of Health and Education.
    100-tals sidor som Är mer intressanta än det läraren talar om: Några elevers tankar om elevdatorer2014Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The purpose of this study is to investigate students' perception of how computers are used in teaching. The question was to see if there are benefits, drawbacks, and if there are areas of change to use computers in teaching. Data Usage is increasing in today's society and in most schools, students get a private student computer use in education. Studies show that data usage will need to be individualized to better help the individual student. The wording of their school says that students should learn IT for their future profession and to better discuss with their consumers / patients. The method used is interviews. Six students in grades three to Health and care program in high school were interviewed. Four interviews were conducted in the study, three individual interviews and group interviews. The results indicate student computer means access to the student when it facilitates the ability to take notes. The computer prevents students in the teaching when it is watched on social media during class, making it difficult to focus on the teacher during the lesson. The computer makes it easier for students to organize their student records in a better way. The possibilities for change focused on improving their notes.

  • 372.
    Andersson, Anna
    et al.
    University of Skövde, School of Life Sciences.
    Gardvik, Anna
    University of Skövde, School of Life Sciences.
    Bröstcancer och kvinnlig sexualitet: En litteraturstudie om hur kvinnor upplever att bröstcancer förändrar deras sexualitet och sexuella relation.2008Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The reason why the authors conducted this study was that breast cancer is one of the most common types of cancer among women. For most women the diagnosis means that the entire or parts of the breast will have to be removed. For most women the breast represents sexuality and femininity. The aim was to describe how female sexuality and sexual relationship change after breast cancer surgery and subsequent treatment. The method was a qualitative litterature review. The study resulted in three main categories: (1) a changed body – a changed sexuality, (2) a changed sexuality – a changed sexual relationship, (3) emotional changes in sexuality, and thirteen subcategories. The result shows that female sexuality changes physically as well as psychically. Most women experience changes in body image, decreased sexual desire and pleasure. Intercourse becomes painful which makes many women withdraw from their partner. Many women experience difficulties in communicating about their changed sexuality with their partner. The result also shows that sometimes health care providers give poor information to women about plausible side effects due to breast cancer surgery and subsequent treatment. Because many women with breast cancer experience sexual problems nurses should give better information about plausible side effects from the treatment and highlight these problems. Nurses should also enable conversations with women regarding their thoughts concerning their changed sexuality.

  • 373.
    Andersson, Anna
    et al.
    University of Skövde, School of Humanities and Informatics.
    Lindström Brage, Emelie
    University of Skövde, School of Humanities and Informatics.
    Kärnkraft - en demokratifråga?: En studie om lärares kärnkraftsundervisning och ett rollspel i förhållande till demokratiuppdraget.2011Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    The nuclear issue is highly topical after the Fukushima-accident and since the concept

    of democracy is the foundation of the Swedish school, it's pertinent to question how

    different forms of nuclear education is related to the democracy assignment. The

    purpose of this study was to examine how some teachers describe their nuclear

    education in relation to the democratic assignment and to create a roleplay about nuclear

    power using the teachers' thoughts and the democratic engagement. The first part of the

    study is based on interviews with high school teachers in science studies. They

    described their nuclear education and their dictums were analyzed in relation to the

    school's democratic assignment. The interviews revealed, not just factual about nuclear

    education, but also goals that can be linked to the democratic engagement; students

    should be able to argue, participate in public debate and take a position on the nuclear

    issue. Some described the factual knowledge as the primary objective, others as a means

    to achieve other objectives, such as the above. Respondents used different teaching

    methods, most common were traditional theory lessons and discussions. Positive was

    that the teachers pointed out many goals of democratic character, maybe because the

    nuclear issue is a controversial social issue, which may have led to that it's being

    considered a political issue. The study's second part was mainly based on literature and

    advice from experts in role-playing. The results showed that the role play, in theory,

    may develop important democratic skills and knowledge in students.

  • 374.
    Andersson, Anna
    et al.
    University of Skövde, School of Life Sciences.
    Sandberg, Anna
    University of Skövde, School of Life Sciences.
    Kvinnors upplevelser av förändrad kroppsuppfatting och sexualitet efter mastektomi: En litteraturstudie2010Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Breast cancer is the most common form of cancer affecting women. The treatment of breast cancer may lead to forcing the woman to remove her breast. The breast is a symbol of femininity and sexuality for many women. The purpose of this literature-based study is to describe women's experiences of altered body image and sexuality after mastectomy. This may provide a better understanding of the nurse in responding to these breast cancer patients. The method used is a qualitative literature-based method, based on qualitative analysis of 13 articles. The results show that women undergoing mastectomy feel loss of part of the body, loss of sexuality and womanhood and that their bodies and sexuality are changing. Many women feel that their bodies have been mutilated and disfigured which leads to decreased sexual desire. The desire to feel normal again is great and to meet that many women undergoing breast reconstruction or prosthesis wear. Given that many women suffer as a result out of their changing body image and sexuality following a mastectomy, it is important that the nurse has knowledge of women’s experience of altered body and sexuality. The knowledge leads to better response from the nurse to patients' experiences of illness and suffering and to mitigate this as far as possible.

  • 375.
    Andersson, Annelie
    et al.
    University of Skövde, School of Business.
    Dunge, Marielle
    University of Skövde, School of Business.
    Hållbarhetsrapportering: På vilket sätt framställer sig svenska modeföretag genom sina hållbarhetsredovisningar?2015Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    It is becoming increasingly common for companies to publish sustainability reports. These aim to report the companies social, environmental and economical impact in a transparent and balanced way. Previous research has questioned the motives behind companies' work with CSR issues. Some argue that companies not only publish their sustainability reports to take responsibility for their impact, but also to use it as a marketing tool.

    There is a strong link between the fashion industry and CSR-related questions, as the industry has an affect on both environmental, social and economic conditions in their production chain. With this in mind, this study aimed to examine the way in which fashion enterprises on the Swedish market present themselves in their sustainability reports. The aim was to create an understanding of what is reported and furthermore describe how the companies portray themselves. This in order to come to a conclusion whether companies use their sustainability reports as marketing material, or if the reports are produced solely as factual information. In order to answer the research question, the sustainability reports were analysed in two steps. Firstly, a qualitative description of each company was made in order to convey a comprehensive picture of the content of the sustainability reports. Moreover a quantitative content analysis was carried out, which treated factors as the “content”, “non-narrative information”, “business relationships”, “future hopes”, “actual behaviour”, “positive and negative revelations related to the company” and “the legitimisation of negative aspects”.

    The study showed that fashion enterprises mainly present social information, and also that the content is primarily positive, which corresponds with previous research. Furthermore, images are used to a great extent in relation to the number of pages of the reports. In light of this the impression is that the companies chose to present themselves in a positive manner with tendencies towards marketing.

  • 376.
    Andersson, Annica
    University of Skövde, Department of Computer Science.
    Användbarhetsaspekter i samband med systemutveckling1999Independent thesis Basic level (degree of Bachelor)Student thesis
    Abstract [sv]

    Denna rapport innehåller en undersökning av vilka aspekter som är avgörande för att en systemutvecklingsprocess leder till slutprodukter med väl användbara gränssnitt. Rapporten innehåller dessutom ett antal riktlinjer för hur en systemutvecklingsmetod kan förbättras med avseende på användbarhet.

    För att genomföra undersökningen har jag valt att utvärdera hur två systemutvecklingsmetoder, SSADM och IDM, hanterar användbarhetsaspekter. Jag har utvärderat dessa metoder utifrån följande frågeställningar: om de stödjer gränssnittsdesign, om de är iterativt användarorienterade, om de involverar designers med speciella gränssnittskunskaper, om de har fokus på användarna, om de innehåller tidiga och kontinuerliga tester av användbarhet, om de har en integrerad utveckling samt om de innehåller stöd för prototyping. Det som framkommer i rapporten är att ovanstående frågeställningar till viss del är avgörande för att säkerställa slutprodukter med väl användbara gränssnitt. Förutom ovanstående aspekter är det dessutom av vikt att ta hänsyn till användbarhet i samband med kravinsamling och kravanalys. Rapporten avslutas med ett antal riktlinjer att ha i åtanke vid design av slutprodukter med användbara gränssnitt.

  • 377.
    Andersson, Annica
    et al.
    University of Skövde, School of Health and Education.
    Sjöberg, Emelie
    University of Skövde, School of Health and Education.
    Att möta och upptäcka elever med suicidtankar- Skolsköterskors upplevelser2016Independent thesis Advanced level (degree of Master (One Year)), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Background: Suicide attempts among adolescents is increasing rapidly. School nurses need to use communication skills that reflect compassion by creating trusting relationships, see and meet the student in their life-world and give hope.

     

    Purpose: To describe the school nurses' experiences of encountering and discovering students with suicidal thoughts.

     

    Method: The study is based on a qualitative meaning analysis where eight school nurses by email wrote stories about their experiences to answer the purpose.

     

    Results: School nurses experiences of discovering students with suicidal thoughts is to have knowledge about the different symptoms that can be displayed by the student. The school nurses experiences of these symptoms where: Destructive behaviours, depressive symptoms, psychosomatic symptoms and problematic home situations. In the meeting with students who have suicidal thoughts, school nurses emphasize the importance of asking about suicidal thoughts, remain, listen and give hope.

     

    Conclusion: School nurses experience many risk factors that leads to that they can better detect and meet students with suicidal thoughts. To identify those risk factors are a big part of the school nurses work. This study results provide a greater knowledge and more experience for health professionals to encounter students with suicidal thoughts.

  • 378.
    Andersson, Ann-Louise
    et al.
    University of Skövde, School of Humanities and Informatics.
    Andersson, Marica
    University of Skövde, School of Humanities and Informatics.
    "Se mig, för här är jag": Lärares resonemang kring innebörden av begreppet individanpassad undervisning i skolår 12009Independent thesis Advanced level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Curriculum for the Compulsory School System, the Pre-School Class and the Leisure-time Centre (Lpo 94) is clear in its definition that individualized tuition shall be applied in the school and that the tuition shall come from the individual pupil’s needs. Since research emphasizes that the definition and meaning of the term needs is not clear we found it interesting to research how teachers define the meaning of the term individualized tuition in school year 1 with special focus on the aspect of pupils’ needs. In order to study active teachers’ reasoning and dictums regarding this we chose a qualitative method with interviews as aid to gather data. The collected material has been analyzed and subsequently discussed with reference to research within the area. The result shows that individualized tuition is regarded as a question of conditions. The identification of individual pupils’ needs is what is perceived to be the basis of how the education should be individualized. The difficulty lies in that it is not always easy to identify the needs. The result showed that the possibility to individualize bases itself in the access of resources and the school subject’s nature. The result also show that age integrated classes is an advantage considering the access of resources, since cooperation between coworkers makes it easier to enable individualized tuition.

  • 379.
    Andersson, Ann-Sofi
    et al.
    University of Skövde, School of Health and Education.
    Åkesson, Louise
    University of Skövde, School of Health and Education.
    Kvinnors upplevelser av sin sexualitet under och efter avslutad bröstcancerbehandling: En litteraturöversikt2018Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Background: Treatment against breast cancer can cause women various side effects, including dry mucous membranes, itching, as well as deformation of one or both breasts. All in all these side effects can affect women´s experience of their sexuality and create a suffering for them. More knowledge is needed about women´s experience of their sexuality, so the nurses can provide good care and strengthen the sexual health of women. Aim: The aim of this study is to describe women´s experience of their sexuality during and after treatment of breast cancer. Method: A literature review based on three quantitative and six qualitative studies. Result: Change in body image and sexuality during or after breast cancer treatment, were a common experience among women. Anxiety and depression was common related to weight gain. However, there were women who experienced change in a positive direction after breast cancer. Concern about being insufficient in their sexual relationships with their partner was found. Women experienced lack of information about treatments and their side effects. Discussion: Both physical and mental disorders were experienced by women with breast cancer. Women needed more information before, during, and after treatment for breast cancer. In order to provide personalized care, nurse´s need to see the whole woman and meet her individual needs of caring. Conclusion: Communication both between nurses, women and their partners could strengthen women in their sexual health.

  • 380.
    Andersson, Anton
    et al.
    University of Skövde, School of Informatics.
    Eriksson, Tobias
    University of Skövde, School of Informatics.
    Effekten av Mickey-Mousing i datorspel: En studie av Mickey-Mousing och dess effektivitet i dynamiska datorspel2019Independent thesis Basic level (degree of Bachelor), 20 credits / 30 HE creditsStudent thesis
    Abstract [sv]

    Mickey-Mousing är en ljudläggningsmetod som använts sedan de tidiga tecknade filmerna i slutet på 1920-talet och beskrivs som en ”musikalisk imitation av fysisk rörelse”. Det har använts genom tiderna för att betona och förstärka de grafiska händelser som sker på filmduken, och har nu även förts in i ett nytt medie - datorspel. Det som undersöks i detta forskningsarbete är användandet av Mickey-Mousing, och dess legitimitet inom spelgenren fumblecore. Frågeställningen som undersökts lyder: Hur påverkar Mickey-Mousing spelupplevelsen i fumblecore-spel jämfört med diegetisk, realistisk ljudläggning?

  • 381. Andersson, Birger
    et al.
    Bergholtz, Maria
    Edirisuriya, Ananda
    Ilayperuma, Tharaka
    Johannesson, Paul
    Gordijn, Jaap
    Grégoire, Bertrand
    Schmitt, Michael
    Dubois, Eric
    Abels, Sven
    Hahn, Axel
    Wangler, Benkt
    University of Skövde, School of Humanities and Informatics.
    Weigand, Hans
    Towards a Reference Ontology for Business Models2006In: Conceptual Modeling - ER 2006: 25th International Conference on Conceptual Modeling, Tucson, AZ, USA, November 6-9, 2006. Proceedings, Springer, 2006, no 4215, p. 482-496Conference paper (Refereed)
    Abstract [en]

    Ontologies are viewed as increasingly important tools for structuring domains of interests. In this paper we propose a reference ontology of business models using concepts from three established business model ontologies; the REA, BMO, and e3-value. The basic concepts in the reference ontology concern actors, resources, and the transfer of resources between actors. Most of the concepts in the reference ontology are taken from one of the original ontologies, but we have also introduced a number of additional concepts, primarily related to resource transfers between business actors. The purpose of the proposed ontology is to increase the understanding of the original ontologies as well as the relationships between them, and also to seek opportunities to complement and improve on them.

  • 382. Andersson, Birger
    et al.
    Berholz, Maria
    Edirisuriya, Anada
    Ilayperuma, Tharaka
    Johannesson, Paul
    Grégoire, Bertrand
    Schmitt, Michael
    Dunois, Eric
    Abels, Sven
    Hahn, Axel
    Gordijn, Jaap
    Weigand, Hans
    Wangler, Benkt
    University of Skövde, School of Humanities and Informatics.
    Towards a common ontology for a business domain: Issues and possible solutions2006In: Open Interop Workshop Enterprise Modeling and Ontologies for Interoperability: EMOI 2006 in connection with CAiSE’06, 2006, p. 12 s.-Conference paper (Other academic)
    Abstract [en]

    To create an understanding of enterprises and the ways they do business, a starting point could be to identify the main actors and the values transferred between them. Business models are created in order to make clear who the business actors are in a business case and to make their relations explicit. The relations are formulated in terms of values exchanged between the actors. The purpose of the work reported in this paper is to create a better understanding of business models by identifying basic notions used in such models. It does so by constructing a common ontology based on three established business model ontologies: e3-value, REA, and BMO. By means of a careful analysis of these ontologies a conceptual schema is created that defines the common concepts. An example is worked out that explains how the common ontology should be understood.

  • 383.
    Andersson, Björn
    University of Skövde, School of Humanities and Informatics.
    Effektiv uppdatering av datorspel med hjälp av filskillnader2007Independent thesis Basic level (degree of Bachelor), 20 credits / 30 HE creditsStudent thesis
    Abstract [sv]

    Detta examensarbete undersöker om och hur man med hjälp av filskillnader kan effektivisera uppdateringar av datorspel. Flertalet olika tester med deltaenkodning har utförts, detta på olika versioner av filer från kommersiella och aktuella spel. Bland annat har försöken med deltaenkodning jämförts med de officiella speluppdateringarna, och med vanlig komprimering av de aktuella filerna. Resultaten visar att användning av deltaenkodning på de filer som ändrats mellan spelens versioner kan vara mycket effektivare och ta mindre plats än de officiella speluppdateringarna.

  • 384.
    Andersson Bustad, Susanne
    University of Skövde, School of Humanities and Informatics.
    Magiska ögonblick och förlorade möjligheter: En studie i möjligheterna att lära med utgångspunkt i elevernas förkunskaper, svårigheter med lärandeobjektet och variationen i det erbjudna lärandet.2011Independent thesis Advanced level (degree of Master (One Year)), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    This study is based on an interest in trying to understand what is needed to ensure that students actually learn in a learning object, in this study equations. Algebra is an area of mathematics in several studies proved to be a stumbling block for many students. Using letters in mathematis is difficult for most students according to research reports and it is also consistent with my own experince as a teacher. The purpose of this study was to seek answers to what in the lesson content and also during the interview that allowed the students to learn more about the learning object. Based on students' prior knowledge and the difficulties students might have with the learning object and the offer of learning, I try to get an answer to what might have contribut the students to developed knowledge of the learning object. This qualitative study is based on a variation theory perspective. The two students who participated in the study attended the same class in high school. By using the theory of variation patterns, it made it possible for me to describe how students learn new things about the learning object, equations. To gain insight into how the students solved the data and developed new knowledge, I had the lesson content and their statements in the interviews to help me understand the difficulties in solving the equtionatask and what in the lessons that have contributed to new knowledge. The results show that pupils' understanding and difficulties in learning objects are relevant to how they can perceive, discern and assimilate new knowledge. One student was able to experience learning from their prior knowledge and assimilate what he had to develop in the variety in the offer of learning. The offered learning did not give the second student the same opportunity. The results indicates that the knowledge of students' prior knowledge, the difficulties the learning object can create and students' own narrative, I argue on the basis of the study'sresults, it is important knowledge for every teacher to be aware of befor the presentation of the lesson if it will give every student opportunities to learn.

  • 385.
    Andersson, Camilla
    University of Skövde, Department of Computer Science.
    Faktorer som kan påverka samarbetet mellan användare och systemutvecklare2002Independent thesis Basic level (degree of Bachelor)Student thesis
    Abstract [sv]

    Litteratur inom systemutvecklingsområdet påvisar fördelar med användarmedverkan. Fördelarna kan påverka organisationer och systemutvecklare att vilja involvera användare i utvecklingsarbetet. Det resulterar dock inte automatiskt i att fördelarna uppnås, eftersom det finns faktorer som kan påverka användare under samarbetet.

    Detta arbete syftar till att klargöra vilka faktorer som användare anser vara mest betydelsefulla under samarbetet och vad de anser om faktorerna. Syftet är även att klargöra vilka faktorer systemutvecklare tror att användare anser vara mest betydelsefulla och vad de anser om faktorerna. Likheter och skillnader mellan användares och systemutvecklares rangordning och kommentarer till faktorerna lyfts också fram.

    För att få frågeställningarna i problempreciseringen besvarade har ett antal intervjuer genomförts med användare och systemutvecklare. Resultatet visar att användare rangordnar faktorn tala samma språk högst och faktorn feedback placeras på andra plats. På delad tredje till femte placering hamnar faktorerna att få tala och följa med i diskussioner, motivation och fokusering på arbetsrelaterade frågor. Systemutvecklare sätter faktorn att få tala och följa med i diskussioner främst. På delad andra och tredje plats hamnar faktorerna feedback och motivation.

  • 386.
    Andersson, Carl
    University of Skövde, School of Informatics.
    Öppen källkod inom kommuner - Analys av risker och möjligheter2014Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Öppen källkod är ett sätt för programutvecklare att distribuera verket tillsammans med dess källkod och göra det fritt läsligt och modifierbart. Denna studie analyserar och identifierar risker och möjligheter som kan uppkomma vid migration till och driftsättning av öppen källkod. Metoden som används är intervjuer med representanter från ett urval av Skaraborgs kommuners IT-avdelningar. Studien har visat indikationer på att både risker och möjligheter skulle kunna finnas. Riskerna ligger främst i att kommunerna bör vara medvetna om att alla roller inom en kommun är viktiga, medan möjligheterna ligger främst i att de indikerar medvetenhet om begränsningar i kunskap vilket är viktigt för en lyckad migration och driftsättning. Framtida arbeten kan behandla olika teknologier så som molntjänster och ”Bring your own device” för att härleda detta mot risker och möjligheter vid migration till och driftsättning av öppen källkod.

  • 387.
    Andersson, Caroline
    et al.
    University of Skövde, School of Humanities and Informatics.
    Bergström, Helena
    University of Skövde, School of Humanities and Informatics.
    Samlingens funktion och innebörd i förskolan: En kvalitativ studie ur ett lärarperspektiv2010Independent thesis Advanced level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The study aims to give deeper knowledge about the circle time in preschool. The studys starting point is teachers understandings about the function of circle time in preschool and what meaning it has for them. The questions of issue in the study are: What function does the circle time have in preschool? and What meaning have the circle time for teachers?To find out more about teachers' understanding about the circle time, a qualitative method with the interview technique was used. Six teachers with various educations from two preschools was asked to participate, choice of preschools and teachers is based on convenience. The result of the study is that the circle time has two meanings, partly as a phenomenon, partly as a working method. Circle time as a phenomenon shows that the teachers describe the circle time as “something” with focus on the content, for example that the circle time has a social function where the group is strengthen. The result shows that the circle time is a working method that teachers use to widen their view on the circle time and to get knowledge about the children that participate. The circle time gives teachers opportunity to afterwards consider their role and the activity itself.

  • 388.
    Andersson, Caroline
    et al.
    University of Skövde, School of Health and Education.
    Haage, Malin
    University of Skövde, School of Health and Education.
    Hur patienter med stomi upplever sin förändrade kropp: En litteraturlöversikt2019Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
  • 389.
    Andersson, Caroline
    et al.
    University of Skövde, School of Health and Education.
    Hermansson, Annika
    University of Skövde, School of Health and Education.
    #Kroppsuppfattning: En socialpsykologisk studie om hur unga individer upplever den egna kroppen när de använder Instagram2018Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Ett samhällsproblem i dagens Sverige är att fler individer i större utsträckning påverkas negativt av sociala medier. Instagram är ett av de största sociala medier som används idag och de bilder som publiceras på Instagram är oftast inriktade på kroppen. Denna kvalitativa fenomenologiska studie har som syfte att utforska och förstå unga individers upplevelse av kroppen vid användandet av Instagram. Studien använder kroppsuppfattning, utseendeideal, social jämförelse, social påverkan och kritiskt tänkande som teoretiska utgångspunkter för att skapa en djupare förståelse kring studiens fenomen och essens. Studien bidrar till en förståelse för det socialpsykologiska perspektivet gällande individens subjektiva upplevelse av kroppen utifrån Instagramanvändning. Tio informanter i åldrarna 18–25 år deltog i semistrukturerade intervjuer som analyserades utifrån en tematisk analysmetod. Resultatet visade att majoriteten av informanterna upplevde den egna kroppen negativt vid användandet av Instagram då de upplevde att kroppen som framställs på Instagram är snyggare, smalare och mer vältränad. Jämförelse mellan den egna kroppen och kroppen på Instagram visade sig därför vara av stor betydelse för hur informanterna upplevde kroppen. Resultatet visade även att kritiskt tänkande är en viktig del i hur nformanterna upplevde deras kroppsuppfattning vid användandet av Instagram.

  • 390.
    Andersson, Caroline
    et al.
    University of Skövde, School of Technology and Society.
    Holt, Hanna
    University of Skövde, School of Technology and Society.
    Har kunden alltid rätt?: Hur hanterar butiker klagomål från missnöjda kunder?2010Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Det är ett vanligt förekommande problem inom handeln att kunden alltid hävdar sin rätt vid klagomål. Det är särskilt ett problem för butikerna som vill ha nöjda kunder samtidigt som de måste sätta gränser för att hålla butikerna lönsamma. Butikerna måste därför ha god kunskap om hur man ska kunna sköta klagomålshanteringen på bästa sätt. För att ta reda på hur olika butiker hanterar klagomål, har intervjuer genomförts med både butikschefer och säljare i fyra butiker inom elektronik- och sportbranschen. Genom dessa intervjuer fick vi reda på hur de anser att man ska ta hand om missnöjda kunder, samt vilken utbildning de har inom detta område. Att både butikschefer och säljare tillfrågades, var för att se om det fanns någon skillnad i deras uppfattningar om klagomålshantering. Syftet med undersökningen var att ta reda på vad butiker anser om begreppet ”kunden har alltid rätt”, samt ta reda på hur butikerna hanterar de missnöjda kunderna som klagar. Vi ville veta vad butikerna gör för att tillmötesgå kundernas klagomål och vad de anser att kunden har rätt till. Vi vill även ta reda på om de vet vad kunder har rätt till enligt lag. Utav undersökningen kom vi fram till att det finns dålig utbildning i klagomålshantering, och att de tillfrågade anser att man bäst lär sig detta genom rutin. Butikerna verkar ha lyckats med sin hantering, då de kunder som varit missnöjda ändå stannar kvar som kunder i butiken. Vi fick även reda på att det viktigaste, när man tar emot klagomål från kunder, är att visa förståelse och lyssna på kunden. Vi såg även att uppfattningarna om hur missnöjda kunder ska hanteras skilde sig mellan butikschefer och säljare. Säljare i elektronikbutikerna menar att de är alldeles för generösa när det kommer till att återgälda missnöjda kunder. I sportbutikerna är säljarna striktare genom att de följer lagar och vissa rutiner i dessa situationer. Alla ansåg även att kunder utnyttjar begreppet ”kunden har alltid rätt” och över lag tycker ingen av butikerna i undersökningen att detta uttryck är riktigt, men menar att kunden ska tro det.

  • 391.
    Andersson, Catarina
    et al.
    University of Skövde, School of Health and Education.
    Hermansson Cederin, Susanne
    University of Skövde, School of Health and Education.
    Kunskap om och attityder till munhälsa och munvård bland personal inom kommunal vård och omsorg.: En enkätstudie.2015Independent thesis Advanced level (degree of Master (One Year)), 10 credits / 15 HE creditsStudent thesis
  • 392.
    Andersson, Catarina
    et al.
    University of Skövde, School of Life Sciences.
    Linda, Thomée
    University of Skövde, School of Life Sciences.
    Hem ljuva hem?: Upplevelsen av att vara närstående till en människa med demenssjukdom boende på särskilt boende2010Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Background: Caring for a person with dementia in special care facilities requires resources like personnel, facilities and medicine. It takes adequate educated staff with personal qualities to create a long-lasting relationship with relatives and residents. Aim: The aim of this study was to examine the experience of being a relative to a person with dementia living in a nursing home. Method: A literature review was conducted in which ten scientific studies were examined and analyzed according to Friberg (2006). Results: Five themes emerged from the analyses describing relatives’ experiences of nursing home care, activities, surroundings and integrity as well as coping strategies. Conclusions: Personal relations are of outmost importance for the experience of being a relative to a person with dementia living in a nursing home. Education and guiding of staff and relatives might prohibit misunderstandings and may help to avoid conflicts.

  • 393.
    Andersson, Charlotte
    et al.
    University of Skövde, School of Health and Education.
    Svan, Olivia
    University of Skövde, School of Health and Education.
    Obesitaskirurgi - en väg till förändrat beteende?: En litteraturbaserad studie2018Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Background: Since 1945 obesity has tripled globally and exceeds more than 650 million people in 2016. It results in at least 2.8 million deaths annually and surpass the deaths followed by starvation. There is stigmatization around obesity which may adversely affect the physical and psychological health of the victims. Obese people generally experiences a poorer quality of life. Bariatric surgery has become an increasingly used tool to curb the ongoing obesity epidemic. A behavioural change is required after surgery in order for the weight loss to persist. A sense of coherence is central to health and whether an individual is capable of moving towards health in the presence of stressors. Aim: To describe patient’s experiences of life after bariatric surgery. Method: A literature based study where the data consisted of twelve qualitative articles. Results: From the analysis three categories emerged; from chaos to control, a changed mindset and a changed life and nine subcategories. Conclusion: Life after bariatric surgery was complex and there were differences in capability regarding changing ones behaviour. Nurses need to have a holistic perspective and individualise the support. 

  • 394.
    Andersson, Christian
    et al.
    University of Skövde, School of Life Sciences.
    Pesonen, John
    University of Skövde, School of Life Sciences.
    Anhörigas upplevelser av omvårdnaden av närstående i särskilt boende i Västra Götaland år 20102010Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Introduction: When a senior person has a large need for special care there is an option to relocate to a nursing home. The seniors every day varies there for it is of outmost importance the nursing care staff can support the senior that he maybe adapt to the new situation. Purpose: The purpose with this study is to enlighten how relatives experience their close ones in special nursing home receive good care treatment. Method: A quality approach with empirical elements is used where relatives experiences of care, being part of and recievment was collected with the help of interviews. Results: Three categories Care, Involvment and Recievment with nine sub categories. An important part in care is to create good contact between relatives and nursing care staff to evolve good ways for communication. It was revealed how important it is as a health care patient to feel they’re being looked upon for who they are and they be part of treatment measures and decisions made by nursing care staff. Discussion: The results can contribute to an increased understanding to how relatives experience care is being conducted in a special accommodation. When relatives are made more involved in care, may lead to a better care for care patient in a nursing home. Conclusion: The results which have been concluded could be used in educational purposes when the care of senior people demands that nursing care staff continuously renews their knowledges. This could be of use for the nurse, the relatives and the seniors living in a nursing home.

  • 395.
    Andersson, Christina
    et al.
    University of Skövde, School of Health and Education.
    Lindberg, Cecilia
    University of Skövde, School of Health and Education.
    Hälsorisker hos flickor vilka använde sociala medier: en litteraturöversikt2016Independent thesis Basic level (university diploma), 5 credits / 7,5 HE creditsStudent thesis
    Abstract [en]

    Introduction: Social media has created a new arena for integration. Social media seems to affect young girls mental health. The purpose of the literature review is to examine some health risks among girls aged 11 to 17 years born after 1993 witch has been exposed to through social media. Method: Ten original articles published in the past five years have been sought out through PubMed. Relevant articles were reviewed and thematized based on health risks which are found in the overview. Results: The literature review examined previous research on health risks in young girls born after 1993 in the use of social media. Girls tend to be more affected by the comments and are affected over time which can lead to depression and anxiety. Self-harm and suicidal tendencies are directly linked to depression. Self-confidence is affected by comments on social media. Girls tend increasingly to suffer from psychosomatic disorders due to use of social media. Social media can increase the feeling of fear and insecurity. The girls' body image is influenced by social media, which ultimately can lead to eating disorders. Discussion: The use of social media can be seen as a health risk in young girls. Nevertheless, the impact of social media is seen as on of the triggers for other underlying causes. Social media can also provide health benefits.

  • 396.
    Andersson, Christofer
    University of Skövde, Department of Computer Science.
    Webfarming: En studie av möjligheter och problem2001Independent thesis Basic level (degree of Bachelor)Student thesis
    Abstract [sv]

    För att företag skall kunna konkurrera på ständigt föränderliga marknader krävs att de har kunskap om exempelvis kundbehov, konkurrenter och nya produkter. Källor till denna kunskap finns både internt inom organisationer och externt i deras omgivning. Både de interna och externa kunskapskällorna är viktiga, men under de senaste åren har ett allt större intresse riktats mot de externa källorna, då de har blivit allt viktigare för att organisationer effektivt skall kunna hantera sina affärsprocesser.

    En av de kunskapskällorna som ofta nämnts är Internet och den data som lagras på hemsidor runt om i världen. Dock är det svårt att hitta relevant data på Internet på grund av dess omfattning och dynamiska karaktär. Det har därför börjat uppkomma nya tekniker för att inhämta, strukturera och integrera data från Internet. En av dessa tekniker är Webfarming som används för att automatiskt inhämta data från Internet och integrera denna med intern data lagrad i så kallade datalager.

    Dock är mängden litteratur som berör Webfarming begränsad och den som finns är till stor del författad av grundaren till Webfarming, Richard Hackathorn. Denna rapport syftar därför till att undersöka vilka möjligheter och problem som företag ser med Webfarming. Resultatet av denna undersökning har sedan jämförts med befintlig litteratur, för att konstatera eller förstärka de idéer som Hackathorn ger uttryck för.

  • 397.
    Andersson, Christoffer
    University of Skövde, School of Humanities and Informatics.
    PELICAN: a PipELIne, including a novel redundancy-eliminating algorithm, to Create and maintain a topicAl family-specific Non-redundant protein database2005Independent thesis Advanced level (degree of Master (One Year))Student thesis
    Abstract [en]

    The increasing number of biological databases today requires that users are able to search more efficiently among as well as in individual databases. One of the most widespread problems is redundancy, i.e. the problem of duplicated information in sets of data. This thesis aims at implementing an algorithm that distinguishes from other related attempts by using the genomic positions of sequences, instead of similarity based sequence comparisons, when making a sequence data set non-redundant. In an automatic updating procedure the algorithm drastically increases the possibility to update and to maintain the topicality of a non-redundant database. The procedure creates a biologically sound non-redundant data set with accuracy comparable to other algorithms focusing on making data sets non-redundant

  • 398.
    Andersson, Christopher
    University of Skövde, School of Humanities and Informatics.
    Fallstudie för distribuerad installation av operativsystem2009Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Rapporten undersöker om det är möjligt att använda Clonezilla för distribuerad installation av Windows Vista som alternativ till Symantec Ghost. Ett ytterligare krav är att installationen ska vara automatiserad och inte kräva något extra arbete efter installationens slut. Dessutom ska datorerna vara redo att användas i en Windows-domän efter en färdig installation.

    Programmet Clonezilla är av typen open source och är fritt att använda medan Symantec Ghost är en kommersiell produkt som kräver flertalet licenser beroende på antalet datorer. Clonezilla körs i Linux och saknar grafiskt gränssnitt, Symantec däremot har ett eget gränssnitt för att överskådligt hantera datorer och distribuera operativsystem i välkänd Windows-miljö. Båda lösningarna testas under flera praktiska experiment i labbmiljö. De två programmen jämförs och utvärderas gällande prestanda och användarvänlighet.  Resultaten visar på att skillnaden gällande prestanda är marginell. Gällande användarvänlighet är skillnaden för de båda programmen större då Symantec erbjuder ett grafiskt gränssnitt tillsammans med hjälpavsnitt för produkten. Båda lösningarna fungerar för ändamålet och har olika fördelar respektive nackdelar.

  • 399.
    Andersson, Daniel
    University of Skövde, Department of Computer Science.
    Cooperative observation of multiple moving targets: an evolutionary approach2003Independent thesis Advanced level (degree of Master (One Year))Student thesis
    Abstract [en]

    The interest for cooperative robots has increased considerably in recent years and one of the research issues within this domain is how to evolve heterogeneity in a team. The research today is however either focusing on diversity in hardware (e.g. sensory system) or diversity of behaviour. This dissertation extends this research and presents experiments that attempts to 'co-evolve' heterogeneity at both the hardware level and the behavioural level. The results show that the team behaviour evolved depends on the complexity of the task where adding constraints or increasing the difficulty of the problem lead to better team behaviour.

    Our belief was that the performance of the team should benefit from using robots that has been evolved at the hardware level together with the behavioural level. This, however, could not be proved to be true, but the idea that these two should be kept together in order to evolve heterogeneity in a team is still believed.

  • 400.
    Andersson, Daniel
    University of Skövde, Department of Computer Science.
    Evaluering av neurala nätverk för en fotbollsspelande mobil robot.2002Independent thesis Basic level (degree of Bachelor)Student thesis
    Abstract [sv]

    Detta examensarbete behandlar ett experiment som Tom Smith utförde vid sitt magisterarbete, att utveckla en Kheperarobot som ska utföra en fotbollsuppgift av enklare modell. Dock koncentrerar sig detta arbete mer på en evaluering av artificiella neurala nätverk för detta problem. De olika typerna av ANN-arkitekturer som har använts till detta arbete är förutom Tom Smiths, baserade på arkitekturer från en artikel skriven av Stefano Nolfi.

    De resultat som har uppnåtts visar att precis som i Stefano Nolfis artikel är det en arkitektur med "spontan modularitet" som visar sig fungera bäst av de arkitekturer som undersökts, även till detta problem.

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