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  • Public defence: 2018-08-31 13:00 Albertsalen, Trollhättan
    Islind, Anna Sigridur
    University West, School of Business, Economics and IT, Divison of Informatics.
    Platformization: Co-Designing Digital Platforms in Practice2018Doctoral thesis, comprehensive summary (Other academic)
    Abstract [en]

    Digital platforms are slowly becoming an important part of both research and everyday work. However, much of the research focus has been on platforms that are already established. Little focus has been on platformization (i.e., design, development and use of platforms in the nascent phases) and the socio-technical aspects of designing platforms for specific practices or purposes, i.e., practicebased platforms. While it is truly important to understand technological aspects and market logics of platform efforts, it is also to understand how platforms become platforms, when designing them alongside end-users. This thesis contributes to the platform discussion with research that focuses both on the technological sides of building platforms while also unpacking the social aspectsof the collaborative design situation (i.e., co-design) and development where endusers meet and later use the platforms. This thesis explores the research questions:How can practice-based platforms be designed and developed? What impact does end-user engagement in platformization have on the practices involved? How can platformization efforts be approached and researched? through a study of the design of platforms in care settings, one 2.5–year study within home care and one 2.5–year study within cancer rehabilitation where the end-users' practices involved in the co-design processes are caregivers and care recipients in bothstudies. This thesis thereby unpacks the platformization process through a roughly five–year longitudinal AR project, based on these two studies. With thehelp of the boundary literature, the design, development and use of platforms inthe nascent phases of platformization is analysed in these two studies. Through aco-design effort in both studies, the practices that are going to use the platforms contribute to a) the design of which boundary resources (i.e., modules in terms of code blocks) will be developed within the platform; b) the design of the boundary object (i.e., working tools in terms of apps) that they are using together inconsensus; and c) the design of a boundary practice in which they will later use the digital artifacts together. The end-users' practices had impact on the design of all layers of the platform through the co-design approach, including an influence on the boundary resources that were developed within the platform. The platforms also had impact on the practices, which designed new ways of interacting. The results thereby both show the impact of the end-users' practices (caregivers and care recipients, which are heterogeneous) on the platform design, as well as the impact of the platform on the design of their boundary practice. In this thesis, the design and development of the two platforms is thereby researched and the design of the platforms is validated by studying the use of the platformsas well. The main contribution of this thesis is a conceptualization of the platformization process where the key characteristics of designing such platforms with heavy user engagement are illustrated in a platformization model and in seven platformization principles.

  • Eklund, Annika
    et al.
    University West, Department of Social and Behavioural Studies, Division of Psychology, Pedagogy and Sociology.
    Skyvell Nilsson, Maria
    University West, Department of Health Sciences, Section for nursing - graduate level.
    Kliniskt basår för nyutexaminerade sjuksköterskor inom Västra Götalandsregionen: en utvärderingsrapport2018Report (Other academic)
    Abstract [sv]

    Newly graduate nurses (NGN) transition between basic education and work in a complex health care practice, as well as their intention of leaving the profession during the first year of work and how this can be prevented, is a global concern. NGN experience difficulties integrating workplace environment, expectations, and educational experiences. This is an evaluation study of a one-year transition program, which was implemented as a project during 2016-17, at six hospitals in Sweden.

    An explorative research design was used and data consist of focus group and individual interviews with NGNs, interviews with first-line managers, observations of simulation training, and survey material from the hospitals. Data was analyzed using thematic analysis. Results show an overarching structure for all hospitals in the region, the NGNs are engaged in the following learning activities; introduction at the ward and a senior RN as preceptor, lectures and/or simulations, change of ward, process-oriented reflection seminars and mentorship.

    The different learning activities contribute to the overall learning in different ways. Continuous supervision and structured reflection are central to NGNs professional learning. Organizational conditions create prerequisites for learning during the transition program and a change of ward is a particular challenge to get organized. The results, also provides a deeper understanding of the foundational components in NGNs early development of expertise, security as professionals, and essential knowledge for bridging the practices of the first cycle program and healthcare practice at hospitals.

  • Tullock, Hanna
    University West, Department of Engineering Science, Division of Subtractive and Additive Manufacturing.
    Concept and simulation of robotized assembly application2018Independent thesis Advanced level (degree of Master (One Year)), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Assa OEM is a manufacturer of locks and fittings for windows, doors and cabinets. To be more competitive, automating the production is an advantage. Assa assembles six different types of left and right reversible hinges. One product stands for 80 % of the assembly time on the line. For this product Assa wants to implement a robotized assembly solution in one of the three assembly stations. The remaining 20% still needs to be assembled manually. The aim of this study is to investigate three assembly stations, select one assembly station to automate, give three concepts at half-time of the project for the selected assembly station and simulate one final automated concept. The assembly line produces approximately 2000 reversible hinges each day. For the stations in the assembly line the cycle time is around 16 seconds. In the three assembly stations the assembly tasks are similar, it is the number of rivets or parts that differ. In assembly station three there is one additional task that is not included in the first two assembly stations. In this task the arm is lifted and turned 180 degrees, and then placed over three rivets. This is more complex for a robot to perform and will require more equipment. There are similarities between assembly station one and two and therefore concepts for both stations will be given. Three layout concepts are presented for the first assembly station and for the second assembly station one concept is presented. Also, two concepts of combining assembly station one and two are presented. On April 17th, 2018, a meeting at Assa was held to discuss the different concepts and layouts. The discussion led to the conclusion that a further investigation on implementing a robot will be carried out for the concept in assembly station two. The main result is that the cycle time of 16 seconds is difficult to accomplish. The path must be well planned to achieve this with a collaborative robot. To attain the cycle time the end-effector must be designed so that no tool change will be necessary. The rivet is small and therefore a gripper would have difficulty gripping the rivets. Therefore, other methods such as ferromagnetic or vacuum are recommended. The feeder system of the rivet is suggested to have a vibrating bowl feeder due to the orientation of the rivets. The frames’ feeder system needs to be designed for the purpose in assembly station two. The frame that is to be assembled on to the fixture exposes a risk for an operator if working beside the robot. To minimize the risk area from the frame, relocation of the frame feeder and planning the path differently is suggested. The layout will require safety equipment and the suitable safety equipment depends on the flexibility Assa requires.

  • Nöbauer, Henrik
    University West, Department of Engineering Science, Division of Welding Technology.
    Residual stresses and distortions in austenitic stainless steel 316L specimens manufactured by Selective Laser Melting2018Independent thesis Advanced level (degree of Master (One Year)), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Residual stresses are one of the major challenges in additive manufacturing of metallic materials today. They are induced during manufacturing because of the rapid local heating and cooling and may cause distortions, cracking and delamination between layers. The magnitude of the residual stresses depends on factors such as manufacturing technology, material, part geometry, scanning strategy, process parameters, preheating temperature and density of the component. In the present work, the magnitudes of residual stresses and distortions in austenitic stainless steel 316L components manufactured by Selective Laser melting have been investigated. Four specimens with rectangular cross-sections where produced with different heights and wall thicknesses. The residual stresses were measured by two different methods, x-ray diffraction and Electronic Speckle Pattern Interferometry (ESPI) incremental hole drilling in order to see how well they correspond to each other. The results showed peaks of high tensile stresses in the building direction in all specimens. The magnitudes of stresses were similar in all four specimens. The largest distortions occurred when the wall thickness was increased, and the height was reduced. It was also shown that the measurements made by x-ray diffraction and ESPI incremental hole drilling were not consistent with each other. The latter showed unrealistically high measurements near the surface.

  • Nielsen, Linn
    et al.
    University West, Department of Engineering Science, Division of Mathematics, Computer and Surveying Engineering.
    Ovik, Anja
    University West, Department of Engineering Science, Division of Mathematics, Computer and Surveying Engineering.
    Dagvatten: Vem har ansvaret?2018Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Today's climate change means warmer temperatures and annual precipitation is expected to increase by 20-60 %. The increased rainfall means more stormwater on the ground. This water must be taken care of in a long-term sustainable manner, otherwise it can lead to problems. Therefore, society must adapt to the climate change that occurs. The study aims at investigating who is responsible for handling the water and clarifying the legal conditions for local stormwater treatment. The study also examines how water management looks like in the detailed plans in Västra Götaland County. The study focuses on looking at and how responsibility for stormwater is distributed in the detailed plan documents as well as the planning rules that are used for water treatment. The method we used is a combination of a qualitative and quantitative as well as a legal method.The study answers the following questions: o Who is responsible for the disposal of stormwater? o How does the municipalities distribute the responsibility of stormwater in the detailed plans? o Are there any plans for regulation of stormwater, which? o What is the distribution of responsibility in the plan descriptions? o Do municipalities have a legal basis for the use of local stormwater treatment, how do legal conditions look? The study results show that 28 % of municipal plans for stormwater are about local stormwater treatment, which is an illegal plan. Local stormwater treatment does not have the support from Chapter 4 Planning and Building Act required for a plan regulation to be used. The conclusion is that the municipalities should take responsibility for the discharge of stromwater if it is within the municipality's area of activity. Nevertheless, only in 16 % of the plans that the real estates are connected to the stormwater network.

  • Klakina, Svetlana
    University West, School of Business, Economics and IT, Division of Media and Design.
    Den trettonde principen?: En undersökning om färgens roll för karaktärsbygge och scendesign2018Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    This thesis examines the function of color in the design of a character and the scene of animated films and answers the question about color features in character and scene design as a separate animation principle, similar to the established 12 animation principles. The paper contains analysis about basic concepts of color and its visual perception, color theory and color psychology. The paper takes into consideration previous studies about color in physics, psychology and animation. The purpose of this study is to research the influence of the color on the plot perception in animation. The method of the study consists of comparing the statistics for correctness of recognition of the character's role and diegesis in the frame depending on the color change. Recognition correctness is established by conducting a blind survey of the representative sample of viewers. The survey is based on five sketches of the frame that use the same original drawing of the character's pose and different combinations of colors for the character and the background coloring. The following combinations of colors were used: warm color tones for the character and warm color tones for the background; warm for the character and cold for the background; cold for the character and warm for the background; warm for the character and warm for the background; uncolored character and uncolored background. Survey participants have assessed and identified different roles of the character and diegesis in each sketch of the frame based on the proposed five alternatives of the scene description according to the scenario idea. The results show that the effect of colors function was detected in all four colored sketches of the frame. The study confirms that all four combinations of color significantly increase the number of correct recognitions of all four roles of character in colored sketch of the frame compared to the uncolored sketch of the frame. This fact confirms the described hypothesis and emphasizes the effect of the color function which helps the viewer to interpret the design of the scene more clearly and to easily perceive the role of the character in colored sketch of the frame compared to the uncolored sketch.

  • Johansson, Tobias
    University West, Department of Engineering Science, Division of Subtractive and Additive Manufacturing.
    Modernisering av el- och belysningssystem i en industrifastighet2018Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    This thesis has been carried out in AB Järn & Rörs premises in Lilla Edet, The project was to modernize the electricity and lighting in the premises, and also calculate how much a modernized lighting solution can save in energy. The premises included a metal workshop, garage, hallway, bath and dressing room, staff room, office and a storage room. The project has been carried out in accordance with current regulations, standards and recommendations from the Swedish National Electrical Safety Board and the Swedish work environment authority. The number of power outlets have been increased in all of the rooms to comply with current standards. The Lightning has been changed from 69 luminaries equipped with two 33 W T5 Light Tubes each and a few halogen lamps, to 59 luminaries equipped with LED light tubes of varying power. This change has decreased the amount of power required by the lighting system from 4167 W to 2246 W, which is a decrease of 1921 W or 46%. The electrical blueprints have all been created in the program EasyEl. The placement of the luminaries and the light calculations have all been made in the program DIALux.

  • Jannborg, Fredrik
    et al.
    University West, Department of Engineering Science, Division of Industrial Engineering and Management, Electrical- and Mechanical Engineering.
    Pettersson, Mike
    University West, Department of Engineering Science, Division of Industrial Engineering and Management, Electrical- and Mechanical Engineering.
    Beredning av nytt distributionsnät i området Långekärrs skola2018Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    This thesis concerns a preparatory work for a distribution power grid 0,4 kV/12 kV in the area Långekärrs school on the island of Tjörn. The preparation is made by TROLKs El & Tele AB at the request from the network owner Ellevio AB and consists of a reconstruction. The project affects 34 subscribers and includes demolition of 3,1 km overhead power lines, construction of 6,4 km underground cable grid and replacement of 4 substations and 8 cable cabinets. This because Ellevio shall maintain their delivery reliability of 99,98 %. In this preparation, there is one field visit to get a better understanding about the project and the conditions. During the field visit photos are taken which are helpful for the placement of the substations, cable grids and cables. Permissions from the County Administrative Board, the municipality and the Swedish Transport Administration are sought, but are done by TROLKs project leader since this preparatory work is done parallel with TROLK. However, the procedure is described in the rapport. In the preparation two options are considered for cabling on a mountain that is a conservation area between Toröd–Vik. One option is to do as it was before and put up new composite poles and overhead cable. But the preparers instead are choosing a second option which means that the cable will be placed in a protection pipe and then attach it to the mountain. Advantages and disadvantages about which side of the road 727 the cable shall be placed at is being considered. Which side of the road is decided by where it will be the least amount of work and intrusion on the subscribers properties. The cost of the project is calculated with the help of Ellevios internal pricelist that is buildt upon the cost index of EBR. The total cost is estimated to 1,4 million SEK.

  • Augustsson,, Jimmy
    et al.
    University West, Department of Engineering Science, Division of Industrial Engineering and Management, Electrical- and Mechanical Engineering.
    Printz, Kristoffer
    University West, Department of Engineering Science, Division of Industrial Engineering and Management, Electrical- and Mechanical Engineering.
    Svensson, Erik
    University West, Department of Engineering Science, Division of Industrial Engineering and Management, Electrical- and Mechanical Engineering.
    Larmanalys för Vattenfall Vattenkrafts produktionsanläggningar längs Göta Älv2018Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Vattenfall Vattenkraft AB owns 57 large scale hydro power plants in Sweden with installed power exceeding 10 MW. The study relates to four of the plants located along Göta river. This report analyzes incidents and the related remedial actions that have occurred during the period 2014 – 2017 as well as the alarm and control systems with the aim to identify potential improvements. The incidents are categorized by error, what actions have been undertaken to correct the issue, plant and season. The incidents have predominately originated in the turbine and generator facilities and have been caused by abnormal levels or temperatures. During summer and winter time, this is mainly due to variation in temperature and flow in the river. The four plants have caused a similar amount of alarms, which is interesting as there is a large variation in age. The analysis does not identify any reoccurring issues which were previously unknown to the company, but the authors recommends that an investigation is conducted to assess if eel screens should be installed for the cooling pumps of Lilla Edet. The alarms are generated in the plants and are sent to the control facility in Bispgården near Sundsvall, where the operator calls the local engineer on duty in Trollhättan. The engineer subsequently goes to the plant to access detailed information on the incidents from the local computers. This report examines the possibility to provide the engineer on duty with detailed information from the plant computer via VPN. This would be possible to implement but would require a detailed assessment of the security implications. The status of the alarm system have also been assessed as it have been modified and extended retroactively, and there is currently no comprehensive overview. The conclusion is that a review of the list of incident codes and their priority is recommended.

  • Seidl, Kristoffer
    et al.
    University West, Department of Engineering Science, Division of Industrial Engineering and Management, Electrical- and Mechanical Engineering.
    Sundström, Alexander
    University West, Department of Engineering Science, Division of Industrial Engineering and Management, Electrical- and Mechanical Engineering.
    Förstudie i installation av laddstationer för elbilar i en bostadsrättsförening2018Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    This degree project consists of a pre-study in the form of a preliminary planning for a possible construction of charging infrastructure at the Silvertärnan 1 housing cooperative in Trollhättan. The purpose of this project was to conduct an exploratory study of the potential value, methodology and conditions, both technical and economic, for this development. The objective was to deliver a preliminary planning regarding these conditions. Electric vehicles are gaining popularity as time passes and technology evolves. In order to meet the increasing demand for charging these vehicles, more charging stations need to be installed. This applies to public areas, but also villas and housing cooperatives. Hence, it is a topical discussion within housing cooperatives in the event of an installation being of interest. It may be important for these housing cooperatives to be at the forefront of this development in order to maintain their attractive status as housing is adapted to keep up with the development of technology that takes place. The current housing cooperative, Silvertärnan 1, comprises 148 apartments with associated garages. The report contains the theory behind the work and a draft proposal for electric car charging infrastructure in the housing cooperative. The proposal contains a situation assessment of the conditions that exist, both technical and economic, where existing facilities, which consists of cold garages with lightning installations and engine pre-heaters, have been investigated and available power has been calculated. Based upon this, three scenarios with different degrees of development have been formulated, these scenarios consist of 6, 33 and 148 charging stations to be installed. With the scenarios as a basis a design has been created for all three of them, Scenario 1 and 2 have been projected to the installation level, while scenario 3 has been planned more casually when assessed as technically and economically unreasonable. A cost calculation has been performed on scenarios 1 and 2 according to the price of different contractors, and a scalable cost base has also been developed. The report also contains a discussion of the technical and economic results of this project as well as a reflection of the benefit to society that the expansion can lead to. Following an analysis of the technical and economic aspects of the project, the project team has determined that scenario 1 is most appropriate and cost-effective to proceed with. Therefore, it is recommended to initially perform the installation at a small scale to subsequently expand the installation if necessary. The project team finds that the project's goals have been met to some extent, but further planning is required before development takes place.

  • Hedqvist, Ann-Therese
    University West, School of Business, Economics and IT, Divison of Informatics.
    Det digitala mötet: Personcentrerad samordnad vård- och omsorgsplanering via videokonferens2018Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    We are becoming older and more people remain in their home with the need for care. When these persons for some reason have been hospitalized and are to return to their homes, care planning is performed in order for the person to be able to leave the ward in a safe manner. With an increasing number of elderly persons in need of care interventions in their home, the need for coordinated care planning in hospitals will also increase. Such planning is today being performed increasingly often via video conferencing. This form of digital encounters poses new challenges for the nurse in creating and maintaining a mutuality. Aim: The aim of the study was to investigate the conditions for coordinated care planning via video conferencing and how this affects the ability of health care professionals to understand and interpret the patient’s situation from a holistic perspective, thus performing a person-centered meeting at a distance. Method: A qualitative research approach was used to gain an understanding of nurses' experience of coordinated care planning via video conferencing. The method consisted of an initial exploratory literature study and individual personal semistructured interviews. The sample consisted of a total of seven nurses in primary care, primary care and municipal home nursing. The analysis of the interview material was conducted with an inductive approach inspired by phenomenology. Result: The result shows that the communication is affected and that meetings via video technology lose proximity and thus a part of the human contact. This can disrupt the possibility of seeing each other as persons but can be compensated by a person-centered approach. The technology can act as a means of human interaction, but not as a compensation for it. The main themes found in the result are loss of proximity compensated by multiple gains with associated themes screen as a barrier and benefits for healthcare professionals, patients and relatives as well as technology as means of human interaction with associated themes decidedly dependent on the people in the meeting and high quality in equipment and performance. Conclusion: Coordinated care planning via video conferencing involves challenges in conveying presence and genuine interest that compensates for the loss of physical presence. This form of meeting can make it more difficult to see each other as persons, however this obstacle can be compensated by a person-centered approach. The nurse needs to be well acquainted with person-centered care in order to meet the patient despite the barrier that the screen may create. Technology is a means, not an end in itself. Proper use of information and communication technology can be used with great time gains to access each other regardless of geographical location and can contribute to human interaction but not replace it.

  • Handzic, Medina
    et al.
    University West, School of Business, Economics and IT, Divison of Law, Economics, Statistics and Politics.
    Imsirovic, Haris
    University West, School of Business, Economics and IT, Divison of Law, Economics, Statistics and Politics.
    Erlander VS Tito: A comparative analysis of ideology2018Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    This thesis intends to do an analysis of the socialist ideology in former Yugoslavia and Sweden during the time 1948 until 1962. The analysis is done on 8 political speeches each, from the former president of Yugoslavia, Josip Broz Tito and from the former prime minister of Sweden, Tage Erlander. We have specified our analysis on five certain policy areas which are: labour market, welfare, foreign policy, democracy and national identity. The aim of the study is to find what kind of similarities and differences that can be found in the speeches, in relation to socialist values. The reason for analysing the views from these two politicians’, is because both claim to be socialist. The study shows that the socialist ideology in Sweden and Yugoslavia, have both similarities and differences. Both Erlander and Tito stem from a Marxist idea tradition which is evident in how they advocate for economic socialism, the labour theory and for the overall implementation of socialism in their respective nation. The main differences that is evident from their speeches is how they look upon the control of government, something which makes them very different in terms of socialist values. Erlander is advocating for a social democratic socialist model which is controlled by the people in a democratic manner, whereas Tito is advocating for a revolutionary, soviet-like socialism that is controlled by himself and the party he represents. The differences and similarities in the socialist values becomes apparent in the different policy areas. Where in some areas, the socialist values differ a lot and in some, less.