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  • 1.
    Abdallah, Ali
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Industrial Engineering & Management.
    The perception of Nuclear powerin Sweden: How engineering students view it2017Independent thesis Advanced level (degree of Master (One Year)), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Nuclear power has been an important part of the electricity generatingin Sweden in almost half a century. However, the use of nuclear powerraises many complex issues such as economy, accident risks, andradioactive waste management and storage. Nuclear power has thereforebeen debated intensively in Sweden as in many other countries since the1970s. Several countries have changed their nuclear policy and starteddecommissioning programs following the nuclear accident in Fukushimaback in 2011. Citizens' support for nuclear power has declined worldwidein last few years, including in Sweden. This study aims to investigatethe perception of nuclear power among engineering students and showsthat the majority of engineering students, who generally are positivetowards technology, have been affected by their surrounding and areagainst nuclear power. Engineering students in general, both supportersand opponents of nuclear power, agree that Sweden should gradually phaseout nuclear power and replace it by renewable energy sources.

  • 2.
    Abrahamsson, Andreas
    Uppsala University, Disciplinary Domain of Science and Technology, Mathematics and Computer Science, Department of Information Technology, Division of Scientific Computing.
    Using Function as a Service for Dynamic Application Scaling in the Cloud2018Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Function as a Service is a new addition to cloud services that allow a user to execute code in form of a function, in the cloud. All underlying complexity is handled by the cloud provider and the user only pay per use. Cloud services have been growing significantly over the past years and many companies want to take advantages of the benefits of the cloud. The cloud services deliver computing resources as a service over a network connection, often by the Internet. To use the benefit of the cloud, one can not just move an application to the cloud and think that it will solve itself. First of all, an application needs to be optimized to be able to take advantages of the cloud. Therefore, together with Tieto, a microservice architecture have been the main architectural pattern when Function as a Service has been evaluated. A major problem with applications, both application built with a monolithic and microservice architecture, is to handle great amounts of information flows. An application may have scaling issues when an information flow becomes too large.

    A person using Function as a Service does not have to buy, rent or maintain their own servers. However, Function as a Service has a certain memory and runtime restrictions, so an entire application cannot be applied to a Function as a Service. This thesis examines the possibility of using Function as a Service in different architectural environments and estimating the cost of it. Function as a Service is a new addition to cloud services, so cloud providers are also compared and evaluated in terms of the Function as a Service functionality. Function as a Service has been tested directly on various

    cloud platforms and even developed and executed locally, encapsulated in containers. The results show that Function as a Service is a good complement to an application architecture. The results also show that Function as a Service is highly flexible and cost-effective, and it is advantageous compared to physical servers and Virtual Machines. Depending on how a function is built, the developer can lower the cost even more by choosing the cloud supplier that fits best for their use. With the flexibility of Function as a Service, applications can handle greater information flow without bottlenecks in the infrastructure and therefore, becomes more efficient and cost-effective. 

  • 3.
    Abuzohri, Ahmed
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Industrial Engineering & Management.
    Business Development: Market research & feasibility study of a PV-wind hybrid system for commercial use2018Independent thesis Advanced level (degree of Master (One Year)), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The definition of environmental sustainability has emerged strongly in the past decades. Industrial organizations worldwide have gone through a number of changes to take their social responsibilities and maintain sustainability by, among other things, replacing the conventional energy-based applications by renewable energy-based solutions. A so-called hybrid power system for electrification, consisting of wind turbines and solar panels, was developed by Vertical Wind AB to be installed on rooftops of residential buildings. The present thesis project analyzed the willingness of the large real estate companies in Uppsala region to adopt the new concept for electrification and conducted a market research on the new developed wind turbines, by Vertical Wind AB, in addition to solar- and wind resources in the target locations. It turned out that the willingness of having such a power system for electrification was high but not extremely high as expected and the hybrid power system was perceived as any other product or investment on the market where profitability is the vital decision parameter while the environmental aspect was slightly considered.

  • 4.
    Ackeby, Susanne
    et al.
    STRI.
    Bollen, Math
    Luleå tekniska universitet.
    Munkhammar, Joakim
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Solid State Physics.
    Prosumer with demand-response:Distribution network impact and mitigation2013Report (Other academic)
    Abstract [en]

    This report is the result from a project funded by ELFORSK done by STRI. Theproject is studying the effects the introduction of so called “prosumers”(customers with own production) and electrical vehicles will have on differenttypes of networks. Four different cases are studied: covering urban and ruralareas with different types of customers.In the urban areas the power through the transformer will be the limitingfactor. The major impact in the cases studied is from the introduction ofproduction from photovoltaics at the customer-side of the meter. This willresult in an introduction of surplus due to production which in one case led toan increase of the absolute power through the transformer with more than30%, which resulted in transformer overloading.In the rural areas the voltage drop or rise will be the limiting factor. The casesstudied had already high voltage drops even in the base cases. In the casestudies it was seen that the voltage drop could be slightly reduced whenintroducing more local production, but the production also led to that voltagerise could appear. As a result the interval of the voltage variations wasincreased, which in turn leads to difficulties with designing the network suchthat neither overvoltage nor undervoltage occurs.Introducing control algorithms had a very positive effect on reducing the netproduction from the photovoltaics. Using both hard and soft curtailment madeit possible to remove all overcurrents or overvoltages. Using hard curtailment,where all production is turned off during overcurrent or overvoltage, leadshowever to a large reduction in energy from renewable energy sources.Therefore soft curtailment should as much as possible be used.The control algorithms studied for reducing the net consumption had a morelimited effect and even resulted in an increase of the maximum netconsumption. When trying to reduce the net consumption during an overload,the reason of the overload could only be moved in time and not removed as inthe case of reducing the net production. And since often the period duringwhich the power exceeds the limit is longer than the number of hours possibleto move the energy, sometimes moving the energy had an adverse effect.The model used for controlling the net consumption needs furtherdevelopment, but it is still possible to draw the conclusion that this type ofcontrol offers only limited possibilities for mitigating overload or undervoltage.The effects of introducing prosumers and more electrical vehicles as defined inthe selected cases did not show any alarming results in this study. However,studies to learn more about the possible consequences of changes atcustomer-side are important to be able to handle the impact of such changeson the network.Further future studies needed: database with load and production data;improved control algorithms; demonstration project; experience from othercountries and studies on reactive power compensation.

  • 5.
    Aggarwal, Shubhesh
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Industrial Engineering & Management.
    Kaldi, Kjzal
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Industrial Engineering & Management.
    Agile Project Management for Knowledge-Based Projects in Manufacturing Industry: Case Study: Epiroc Drilling Tools, Fagersta, Sweden2018Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Epiroc Drilling Tools is a manufacturing company that produces tools for rock mining and excavation. The company adopted the principles and framework of Lean Product Development in their R&D department with few practices of an agile framework called Scrum. These agile practices are used in the pre-study phase or the knowledge value stream of their lean product development. Hence, this research is limited to the knowledge value stream within the R&D department.

    The use of agile project management in manufacturing industry is unique and majority of the agile frameworks are specifically designed to suit the needs of software development companies. Several theories like Scrum, Lean, Kanban and DSDM were studied by the researchers to scrutinize the current framework of the department. The challenges and the similarities of the currently used framework with several other agile frameworks and the companies are discussed. Several qualitative research methods were adopted to know the viewpoints of the working employees in the department which are compared with other companies like Volvo Cars, ABB, LShift, EnergySoftware and from another division of Epiroc called Rocktec Automation who faced some similar challenges while practicing agile project management. After further research on the theories and comparison of the process, roles of the working employees and documentations within the knowledge value stream, DSDM had more similarities with the currently used framework than Scrum. This allowed to recommend ways that can fill the missing gaps using practices of DSDM without altering the existing working procedure in the knowledge value stream. This ensures that the improvement in the knowledge value stream remains continuous. On the contrary, a brief discussion is included on whether there is a need to be agile for manufacturing industries or is it just a changing trend in the field of project management.

  • 6.
    Ahlqvist, Carolina Marianne
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Solid State Physics.
    Projektorganiseringen som drivkraft och hinder för industriell förnyelse i byggindustrin: en fallstudie av Skandionkliniken2014Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Understanding how innovation and renewal occurs in an industry is important for how to manage technical development for individual companies. It is also important for creating a beneficial industrial context for renewal, from both a political and an industrial perspective, in which new solutions can arise and spread through the involvement of several actors of the industry. How innovation and renewal occurs in the construction industry in Sweden is however viewed differently. One challenge that has been pointed to is that most of the work performed in the construction industry is organized in projects, which in turn should affect how innovation and renewal can be achieved.

     

    The aim of this thesis is to provide an understanding of how the project organizing in the industry affects innovation and renewal. This is executed through a case study of the construction of Skandionkliniken, a proton therapy clinic, and by using an industrial network theory that challenges the traditional view of how innovation is achieved. One important understanding drawn from this study is that renewal is created in the interface between companies and their resources. The kinds of innovation and renewal that can take place in the projects highly rely on technical interdependencies and organizational features of the involved actors. Three conclusions are drawn from this study; firstly, innovation and renewal in the construction industry occurs gradually across projects, secondly, the type of innovation that occurs is not what is expected from a traditional point of view, and thirdly, therefore it is not necessarily obvious when or how it takes place, which has implications both for policy and company management.

  • 7.
    Anderson Kronlid, Carl
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Industrial Engineering & Management.
    Sundin, Robin
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Industrial Engineering & Management.
    Varför tror vi att vissa företagär mer hållbara än andra?: - En studie om hur företags motiv och kommunikation kringhållbarhet är relaterat till konsumenters uppfattning2014Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
  • 8.
    Andersson, Christoffer
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Industrial Engineering & Management.
    Utvecklingen av samverkansregler mellan hälso- och sjukvården och näringslivet: Samverkan och krishantering i fält av legitimitet2015Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Collaboration is a form of organization on the rise in Sweden. For health care, it is ofinterest to collaborate with industry to ensure that needs for specialist education andtraining are met and that products developed meet the relevant requirements.Conversely, industry actors have an interest to have a close collaboration with healthcare in order to gain insight into customer needs, provide information about theirproducts and to test products in development.The starting point of this study is an agreement and regulatory framework for formsof collaboration between public health care in Sweden in general and thepharmaceutical industry, the medical device industry and the laboratory technologyindustry. The research questions concerns how this agreement has evolved and theprocess surrounding its emergence may contribute to knowledge about collaborationas a form of organization and the relationship to concepts such as legitimacy,corruption and institutional theory.By tracking the emergence of the current regulatory framework genealogicalthroughout history, the study uncovers how the agreements have played a role in andcontributed to the legitimization and institutionalization of collaboration practices andhow crises have changed the shape of the practices. A theoretical treatment ofrelevant concepts such as legitimacy, institutionalization of practices, corruption andstigmatization of organizations form the basis for an interpretation and analysis of theprocess.The conclusions of the examination of the historical process that led to the currentagreements contribute to empirical knowledge of how crises and stigma affect thelegitimacy of collaboration practices and how the repair of legitimacy can be donesuccessfully after a crisis. The treatment of the empirical material is also a historicalsource for the development of ethics agreements between public health care andpharmaceutical industry and the medical industry in Sweden.

  • 9.
    Andersson, Malin
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Industrial Engineering & Management.
    Gabre, Viktor
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Industrial Engineering & Management.
    Lagbasens roll i byggproduktion: en studie om motivation och ledarskap2015Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    In the construction industry, there has been a drop in productivity in recent years, and despite the fact that motivation is a key factor when it comes to create productive work, there seems to be few studies that focus specifically on what motivates the construction worker. The studies that exist actually seem to exclude the great influence of the foreman and impact on the construction worker motivation, which this paper intends to investigate further.

    The aim of the study is therefore to understand what motivates and demotivates the construction worker and understand the role and impact of the foreman on constructions worker motivation. The influence of the foreman on the construction team seems to be non-present in studies and research within the construction industry and therefore, this thesis refers to emphasize this important role.

    The work is performed at the construction company Skanska during the spring term 2015 where the interviews took place with employed construction workers, foremen and supervisors. The study has shown that workers are proud and want to create a quality end product. Standstills and revised planning is common within construction but are obstacles to their creation and a significant demotivator at work. Lack of commitment from other co-workers creates dissatisfaction and irritation, which negatively impacts the overall motivation.

    The position as a foreman requires both extensive knowledge and experience in construction management. As it seems the foreman also should be a people person. The study has shown that the foreman has a major effect on construction worker motivation by scheduling and distribute the work fairly among the workers. It also appears that the foreman has some form of intermediate impact on workers motivation, by adjusting how the worker interprets the external factors that affect their motivation.

  • 10.
    Andersson, Marcus
    et al.
    Uppsala University, Disciplinary Domain of Humanities and Social Sciences, Faculty of Social Sciences, Department of Business Studies.
    Sigvardson, Patric
    Uppsala University, Disciplinary Domain of Humanities and Social Sciences, Faculty of Social Sciences, Department of Business Studies.
    Embracing Blockchain: The Challenges of Collaborative Innovation Within the Financial Industry2018Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Creating standardized infrastructures for new technologies has become a frequent event in recent years, forcing competing firms to together collaborate in order to develop and mutually agree on a common standard. This is due to technologies such as blockchain (distributed ledger) technology that need interoperability to reach its full potential, making the collaboration aspect crucial for organizations that want to adapt to the technology. Therefore, this study’s purpose is to identify and analyze the challenges of creating such a standardized infrastructure. A case study was used to analyze these challenges, which involved experts of blockchain technology and three Nordic banks connected to the blockchain consortium R3. First, a pre-study took place with the help of blockchain experts, who helped identify potential problems regarding blockchain (distributed ledger) technology. Secondly, a main study was conducted consisting of four interviews with key persons representing the banks, in addition to collecting secondary data via news articles, and press releases. With the help of co-opetition theory and a technical description of blockchain (distributed ledger) technology, an analytical model was developed to support the analysis of the data collection. The analysis focus on aspects of co-opetition drivers, co-opetition capabilities, co-opetition dynamics and blockchain aspects, which were used to showcase the challenges of collaborating on creating a standardized infrastructure. The result of this study highlights the importance of learning and educational aspects, the size of a cooperation and threats from other competing solutions, which generates challenges. In addition to the identified challenges, this study has also contributed to an understanding of how these aspects can come to affect a collaboration.

  • 11.
    Andersson, Martin
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Microsystems Technology.
    Ek, Johan
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Microsystems Technology.
    Hedman, Ludvig
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Microsystems Technology.
    Johansson, Fredrik
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Microsystems Technology.
    Sehlstedt, Viktor
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Microsystems Technology.
    Stocklassa, Jesper
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Microsystems Technology.
    Snögren, Pär
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Microsystems Technology.
    Pettersson, Victor
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Microsystems Technology.
    Larsson, Jonas
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Microsystems Technology.
    Vizuete, Olivier
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Microsystems Technology.
    Hjort, Klas
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Microsystems Technology.
    Klintberg, Lena
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Microsystems Technology.
    Thin film metal sensors in fusion bonded glass chips for high-pressure microfluidics2017In: Journal of Micromechanics and Microengineering, ISSN 0960-1317, E-ISSN 1361-6439, Vol. 27, no 1, article id 015018Article in journal (Refereed)
    Abstract [en]

    High-pressure microfluidics offers fast analyses of thermodynamic parameters for compressed process solvents. However, microfluidic platforms handling highly compressible supercritical CO2 are difficult to control, and on-chip sensing would offer added control of the devices. Therefore, there is a need to integrate sensors into highly pressure tolerant glass chips. In this paper, thin film Pt sensors were embedded in shallow etched trenches in a glass wafer that was bonded with another glass wafer having microfluidic channels. The devices having sensors integrated into the flow channels sustained pressures up to 220 bar, typical for the operation of supercritical CO2. No leakage from the devices could be found. Integrated temperature sensors were capable of measuring local decompression cooling effects and integrated calorimetric sensors measured flow velocities over the range 0.5-13.8 mm/s. By this, a better control of high-pressure microfluidic platforms has been achieved.

  • 12.
    Andersson, Martin
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Microsystems Technology.
    Hjort, Klas
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Microsystems Technology.
    Klintberg, Lena
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Microsystems Technology.
    Fracture strength of glass chips for high-pressure microfluidics2016In: Journal of Micromechanics and Microengineering, ISSN 0960-1317, E-ISSN 1361-6439, Vol. 26, no 9, article id 095009Article in journal (Refereed)
    Abstract [en]

    High-pressure microfluidics exposes new areas in chemistry. In this paper, the reliability of transparent borosilicate glass chips is investigated. Two designs of circular cavities are used for fracture strength tests, either 1.6 mm wide with rounded corners to the fluid inlets, or 2.0 mm wide with sharp inlet corners. Two kinds of tests are done, either short-term,e.g. pressurization to fracture at room temperature, or long-term, with fracture at constant pressurization for up to one week, in the temperature region 11–125 °C. The speed of crack fronts is measured using a high-speed camera. Results show fracture stresses in the range of 129 and 254 MPa for short-term measurements. Long-term measurements conclude the presences of a temperature and stress dependent delayed fracture. For a reliability ofone week at 11–38 °C, a pressure limit is found at the lower end of the short-term measurements, or 15% lower than the average. At 80 °C, this pressure limit is 45% lower. Crack speeds are measured to be 10−5 m s-1 during short-term fracture. These measurements are comparable with estimations based on slow crack growth and show that the growth affects the reliability of glass chips. This effect is strongly affected by high temperatures, thus lowers the operating window of high-pressure glass microfluidic devices.

  • 13.
    Andersson, Martin
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Microsystems Technology.
    Hjort, Klas
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Microsystems Technology.
    Klintberg, Lena
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Microsystems Technology.
    High pressure glass microfluidics for supercritical CO2 with aqueous solutions2016Conference paper (Refereed)
    Abstract [en]

    A microfluidic system is presented to investigate interactions between supercritical CO2 and H2O using high-pressure glass chips. The reliability of these chips at pressures necessary to sustain CO2 in the supercritical phase is dependent of both time and temperature. 130 bar can be kept at 38°C for more than a week. These systems can be used to investigate fluid interaction between supercritical CO2 and aqueous solutions by the addition of pH sensitive dye and high speed absorption light imagining, making it possible to demonstrate acidification is in a multiphase chip. By the addition of integrated temperature sensors, better control of the states of the fluids inside the chips can be achieved.

  • 14.
    Andersson, Martin
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Microsystems Technology.
    Hjort, Klas
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Microsystems Technology.
    Klintberg, Lena
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Microsystems Technology.
    High-Speed Imaging Of The ph Drop In Aqueous solutions In Contact With Supercritical Co2 Segments2016Conference paper (Other academic)
    Abstract [en]

    A high-speed imaging system based on light absorption of bromophenol blue (BPB) pH sensitivedye in a glass high-pressure microchip is used to study the instantaneous dynamics of a pH drop in anaqueous phase in contact with segments of subcritical (liquid) and supercritical CO2. The dynamics ofthe pH-drop has been studied and visualized, demonstrating acidification rates of up to 3.5 pH/s.

  • 15.
    Andersson, Martin
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Microsystems Technology.
    Knaust, Stefan
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Microsystems Technology.
    Ogden, Sam
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Microsystems Technology.
    Hjort, Klas
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Microsystems Technology.
    Bodén, Roger
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Microsystems Technology.
    Integrated high-pressure fluid manipulation in microfluidic systems2014Conference paper (Other academic)
  • 16.
    Andersson, Per
    Uppsala University, University Administration. Kansliet för naturvetenskap och teknik.
    Engineering Education and Active Students2006Conference proceedings (editor) (Refereed)
  • 17.
    Andersson, Peter
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Applied Nuclear Physics.
    Holcombe, Scott
    OECD Halden Reactor Project.
    Feasibility Study of Using Gamma Emission Tomography for Identification of Leaking Fuel Rods in Commercial Fuel Assemblies2017Conference paper (Refereed)
  • 18.
    Andreas, Jonsson
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Solid State Physics.
    Roos, Arne
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Solid State Physics.
    Simulations of the energy performance of smart windows based on user presence using a simplified balance temperature approachIn: Energy and Buildings, ISSN 0378-7788, E-ISSN 1872-6178Article in journal (Other academic)
    Abstract [en]

    In this paper a simulation tool for simulating and comparing windows have been further developed so that the software also can simulate smart windows with the ability to vary the g-value or the solar heat gain coefficient. The g-value can be controlled using different control strategies, which can be based on time control, user control and different types of daylight control. The software is basically a simulation tool to calculate the energy for heating and cooling caused by the windows as a building component. Due to the simplicity of the program, it is suitable as a tool for selecting the right type of window for a certain building. Six different control strategies have been developed to show different approaches for controlling smart windows. Some results are shown as examples of how the new functionality is working. This new functionality of the software makes it easy to compare smart windows between themselves and also to make fair comparisons with static windows.

  • 19.
    Andreasson, Rebecca
    et al.
    Högskolan i Skövde, Institutionen för informationsteknologi.
    Lindblom, Jessica
    Högskolan i Skövde, Institutionen för informationsteknologi.
    Thorvald, Peter
    Högskolan i Skövde, Institutionen för ingenjörsvetenskap.
    Distributed Cognition in Manufacturing: Collaborative Assembly Work2016In: Advances in Manufacturing Technology XXX / [ed] Yee Mey Goh, Keith Case, IOS Press , 2016, p. 243-248Conference paper (Refereed)
    Abstract [en]

    Cognitive science is becoming increasingly central within humanfactors and ergonomics (HF&E) and there has long been a call for a more systemicperspective in the area with a somewhat broader unit of analysis. This paperpresents a case study applying the theoretical framework of distributed cognition(DCog), which shows how DCog would offer a more complete understanding ofmanufacturing within its greater context, including the social, cultural, andmaterial surroundings. This paper aims to characterize and analyse dock assemblyof forest machines as a complex socio-technical system from a DCog perspective;focusing on the creation of enacted landscapes in this particular setting. The paperalso exemplifies benefits of using the DCog framework in the manufacturingdomain as a way of grasping the assembly workers’ tacit competence and skills.

  • 20.
    Andreasson, Rebecca
    et al.
    Högskolan i Skövde, Institutionen för informationsteknologi.
    Lindblom, Jessica
    Högskolan i Skövde, Institutionen för informationsteknologi.
    Thorvald, Peter
    Högskolan i Skövde, Institutionen för ingenjörsvetenskap.
    Interruptions in the wild: portraying the handling of interruptions in manufacturing from a distributed cognition lens2017In: Cognition, Technology & Work, ISSN 1435-5558, E-ISSN 1435-5566, Vol. 19, no 1, p. 85-108Article in journal (Refereed)
    Abstract [en]

    This paper presents a study examining interruptionsin the wild by portraying the handling of interruptionsin manufacturing from a distributed cognitionlens. By studying how interruptions occur and are handledin the daily activities of a work team at a large foundry forcasting heavy diesel engines, we highlight situations whenthe propagation, transformation, and representation ofinformation are not supported by prescribed work processesand propose recommendations for how this can beamended. The study was conducted by several visits to theaforementioned factory with cognitive ethnography as thebasis for the data collection. The focus was on identifyinginterruptions and analysing these through a distributedcognition framework as an initial step towards studyinginterruptions in a manufacturing environment. The keyfindings include the identification of three, previouslyundefined, types of interruptions and the conclusion thatinterruptions do indeed affect the distributed workload ofthe socio-technical system and thus the overall productionperformance at the casting line.

  • 21.
    Arfwedson, Pontus
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Signals and Systems Group.
    Creating a usable analysis application built on an existing visualization platform2017Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    The advances in research on wireless communications has lead up to the current success of 4G mobile broadband and is currently focusing on designing the upcoming even more advanced fifth generation (5G) networks. The type of research behind this typically generates large quantities of data and requires efficient analysis in order to achieve tangible results. To enable this analysis, visualization of the data is used to give the researchers the needed insights. For this master thesis project an existing platform will be analyzed with the goal of, by utilizing the platform, creating a powerful, useful analysis application with the necessary and desired tools. The platform can access data produced from research simulations and visualize them through different types of useful charts. However, it has up until now lacked some important functionality, mainly letting the user modify and alter the visualization to aid in the analysis. It furthermore requires knowledge and experience before being useful. To solve this, there existed a need of extending the platform with new tools and functionality to give the user more control and possibilities and to simplify the usage. The thesis resulted in a functioning analysis application that gives the user many necessary features to effectively analyze data. The result fulfilled the set requirements with improved and added views, extended tools and optimized performance.

  • 22.
    Arfwedson, Pontus
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences.
    Berglund, Joel
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences.
    Inomhuspositioneringssystem: Utvecklande av server-funktionalitet, klient-kommunikation och en grafikmotor2015Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The projects goal was to make an already existing indoor positioning system useful forthe average smartphone user. This was achieved by creating an Android applicationwhich, along with a running server, continuously presents the user with all the currentneeded information. It uses the graphics engine andEngine to create the graphical userinterface. The application was created in the development environments Eclipse andAndroid Studio.

  • 23.
    Aslan, Zeynep
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences.
    The Turkish International Roll-on/Roll-off Industry: Analysis of the Industry and the Strategies of the Companies on the European Lines2017Independent thesis Advanced level (degree of Master (One Year)), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Ro-ro transportation is a type of short-sea shipping where the wheeled cargo is transported by ro-ro (roll-on/roll-off) vessels.This transportation type is different than other sea shipping transportations such as container shipping. The international ro-ro industry between Turkey and Europe has grown significantly in the past decades mostly due to the problems that Turkish international freight operators faced on the land routes through European countries. Currently, there are three companies operating ro-ro on the European lines; U.N. Ro-Ro, Alternative Ro-Ro and Ulusoy Ro-Ro. U.N. Ro-Ro is the market leader with 65% market share and is also the fourth largest ro-ro operator in terms of capacity in lanemeters. Alternative Ro-Ro is the second largest ro-ro operator with 23% market share and Ulusoy Ro-Ro is the third with 12%. The companies emerged at different times in the market with different resources and strategies. Through archival studies and interviews, this thesis focuses on the analysis of the ro-ro industry with PESTLE Analysis and Michael Porter’s Five Forces and the strategies of the existing ro-ro operators in the market. PESTLE Analysis presented that factors that affect export and import volumes such as political and economical factors affect the ro-ro industry the most. Porter’s Five Forces Analysis presented that the power of buyers, the threat of land transportation as substitute and rivalry are high, the power of suppliers is medium, and the threat of new entrant and container shipping as substitute are low. The most commonly used strategies are differentiation, diversification, alliance and specialization strategies.

  • 24.
    Bahceci, Ertin
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences.
    Numerical simulation of the linearised Korteweg-de Vries equation: Diploma work (15 HP) Uppsala University Division of scientific computing2014Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The first main focus in the present project was to analyse the boundary treatment of the linearised Korteweg-de Vries equation. The second main focus was to derive a stable numerical solution using a high-order finite difference method. Since the model involved a third derivative in space, the numerical treatment of the boundaries was highly nontrivial. To aid the boundary treatment high-order accurate first and third derivative finite difference operators were employed. The boundaries are based on the summation-by-parts (SBP) framework, thereby guaranteeing linear stability. The boundary conditions were imposed using a penalty technique. A convergence study was performed where the derived numerical solution was compared with an analytical one. Fourth order accurate Runge-Kutta was used to time-integrate the numerical approximation. Measuring the rate of convergence, q, yielded q = 4 for 4th order accurate SBP-operators and q = 5.5 for 6th order accurate SBP-operators. Thus the convergence study proved the accuracy and stability of the numerical solution derived with the SBP-methodology.

  • 25.
    Bahtic, Ena
    Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences.
    Jämförelse av reningsmetoder för tvättvatten från bussar2018Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
    Abstract [sv]

    Alla fordonstvättar för Stockholms bussar i kollektivtrafiken har olika varianter på efterföljande vattenrening. Trafikförvaltningen önskar prova en ny sluten reningsmetod som inkluderar en indunstare som koncentrerar föroreningar och avdunstar vattnet för i princip 100 % vattenrecirkulation. Arbetets syfte är därmed att jämföra den slutna reningsmetoden med de tre nuvarande reningsmetoder som har en vattenrecirkulation på 80 %. En av de nuvarande metoderna består av biologisk rening med efterföljande poleringssteg, den andra av hydrocykloner med efterföljande elektroflockation och den tredje av ozonrening. Jämförelse baserades på för-och nackdelar utifrån reningsresultat, drift, underhåll, drift-och underhållskostnader samt livscykelkostnader.

    Studien visade att en sluten metod med indunstning genererar en högre avskiljning av föroreningar och återanvänder allt renat vatten till tvätthallen, på så vis belastas inte det kommunala spillvattennätet. För den biologiska reningen och elektroflockationen finns en tydlig tendens för överskridande av utsläpp av zink. För elektroflockationen finns även en tendens för överskridande av uppsamlad halt bly, nickel och krom.Indunstningen medför också en del högre kostnader. Grundinvesteringen är upp till fem gånger så stor och elförbrukning upp till sex gånger dyrare jämfört med de nuvarande reningsmetoderna.

    Indunstningen medför en högre energiförbrukning men genererar överskottsvärme som upp till 80 % kan återföras via fläktluftvärmare för att värma upp tvätthallen. Uppvärmning att tvätthallar är den mest kostsamma energiförbrukning på bussdepåerna och på så vis kan den kostnaden minska väsentligt.

    Totala kostnader för maskinutrustningarnas livslängd beräknades utifrån nuvärdesmetoden som räknar om alla betalningar över tid till tidpunkten vid investeringen. Livscykelkostnaden visade sig vara lägst för ozonrening främst då metoden inte kräver några större driftkostnader. Den mest kostsamma livscykelkostnaden var för den biologiska reningen. Det fanns dock indikationer på att vattenrecirkulationen inte fungerar som den ska då färskvattenförbrukning var den dyraste driftparametern.

  • 26.
    Barck, Ivan
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences.
    Lind, Joar
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences.
    Jansson, Christian
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences.
    Crowdfunding i start up-företag: En fallstudie om delägarbaserad crowdfunding som finansieringsmetod2015Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    This study was performed to examine the performance of an equity based crowdfunding campaign, as well as seeking to describe the risks, complications and the opportunities that this kind of funding brings. The study was conducted by an empirical case study of a company that was about to initiate an equity based crowdfunding campaign.

    The conclusion is that the planning of an equity based crowdfunding campaign is time consuming and requires knowledge in many different areas. Therefore it is important to identify in which areas skills and resources already are available within the company, and where it must be obtained through a learning process.

    The report also highlights that equity based crowdfunding, because of legal restrictions surrounding the issue of unlisted shares, can not be marketed as other types of crowdfunding. This leads to the conclusion that those who invest in equity based crowdfunding do not necessarily belong to the crowd that crowdfunding is generally associated with. Arguments can be made that this crowdfunding model rather resemble traditional angel networks.

    A technical study was also made about the company's products. The result of the technical study can be used by customers to get a clearer understanding of the company's products, but also by the company itself as a good insight into how their products work in practice and to develop the existing products.

  • 27.
    Bashir, Hussam
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Applied Mechanics.
    Calculation of Wave Propagation for Statistical Energy Analysis Models2015Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    This thesis investigates the problems of applying Statistical Energy Analysis (SEA) tomodels that include solid volumes. Three wave types (Rayleigh waves, Pressure wavesand Shear waves) are important to SEA and the mathematics behind them is explainedhere. The transmission coefficients between the wave types are needed for energytransfer in SEA analysis and different approaches to solving the properties of wavepropagation on a solid volume are discussed. For one of the propagation problems, asolution, found in Momoi [6] is discussed, while the other problem remains unsolveddue to the analytical difficulties involved.

  • 28.
    Bekteshi, Fatbardha
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences.
    Förbättringsarbete inom rollfördelning2017Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    After the chosen organization has undergone a major reorganization, it is well-being today. The reorganization involed cuts in personnel and closure of productions. After the reorganization, tasks, projects and roles were left without resources. After the organization, it is prosperous today. The organization is no longer in the survival phase, but the reorganization has not stopped to stabilize after the survival phase. Stabilizing the organzation requires leadership, communication, projects and processes for the role-sharing improvement area. During the study, it was possible to conduct seven interviews, two observations and document collection. The distribution of roles is about revealing that employess go into each other's areas or tasks despite the processes that show the boundaries between the different areas. It creates unclear roles, boundaries between work areas and communication shortages. The study presents a survey of the selected organization's current situation and improvement proposals as well as implementation plan. 

  • 29.
    Bergkvist, Mikael
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Electricity.
    Roos, Arne
    Ribbing, Carl G
    Anomalies in integrating sphere measurements on structured samples1988In: Applied Optics, ISSN 0003-6935, E-ISSN 1539-4522, Vol. 27, no 18Article in journal (Refereed)
  • 30.
    Berglund, Martin
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Microsystems Technology.
    Persson, Anders
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Microsystems Technology.
    Thornell, Greger
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Microsystems Technology.
    A High-Performance Microplasma Source for Highly Sensitive and Robust Gas Analysis2014In: Proc. of Micronano System Workshop 2014, Uppsala, Sweden, May 15-16, 2014, 2014Conference paper (Other academic)
  • 31.
    Bernspång, Josefina
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Industrial Engineering & Management.
    Möjligheter, behov och strategi för företagsetableringar inom High Voltage Valley2013Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    The structure of the thesis is based on opportunities to attract businesses to the region, the need of establishments in the region and benchmarking with establishment strategies of other cluster initiatives. The identified opportunities are the local business relationship with ABB, the prerequisites of life quality in the region and the availability of financial support. Further on has a number of opportunities to be developed been identified; diversification of the existing businesses, an expansion of the cooperation with universities and to simplify the contact with local authorities. Challenges that HVV is facing is: creating a more dynamic labor market, secure long-term labor supply, spread the image of the brand HVV and finally putting HVVs geographic scope. Two of the identified needs of establishments are strategically important: to establish a third-party logistician and commercializing systems for distributed generation and energy storage. Strategically HVV should identify their core areas and limiting operations to areas with strong growth potential.

  • 32.
    Bertholds, Alexander
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences.
    CFD Simulations of the New University of Sydney Boundary Layer Wind Tunnel2012Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Using Computational Fluid Dynamics Simulations, the flow in the new University of Sydney closed circuit wind tunnel has been analyzed prior to the construction of the tunnel. The objective was to obtain a uniform flow in the test section of the wind tunnel while keeping the pressure losses over the tunnel as low as possible. This was achieved by using several flow-improving components such as guide vanes, screens, a honeycomb and a settling chamber. The guide vanes were used in the corners and in the diverging part leading into the settling chamber, giving a significant improvement of the flow as they prevent it from taking undesired paths. The settling chamber is used to decelerate the flow before it is accelerated when leaving the settling chamber, a process which reduces the turbulence in the flow. Screens were used in the settling chamber to further improve the flow by imposing a pressure drop which evens out differences in the flow speed and reduces the turbulence. The honeycomb, which is situated in the end of the settling chamber, makes the flow more uniform by forcing it to go in only one direction. A uniform flow was obtained using three screens and one honeycomb together with the guide vanes and the settling chamber.

  • 33.
    Bertilsson Forsberg, Petter
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Industrial Engineering & Management.
    Collaboration in practice: A multiple case study on collaboration between small enterprises and university researchers2018Doctoral thesis, monograph (Other academic)
    Abstract [en]

    University-industry collaborations (UICs) have been hailed as key for Sweden's innovativeness and economic growth. Similarly, building research and innovation policies for the promotion of collaboration between universities and industry have become a cornerstone for many other European countries.

    In academic literature there has been an emphasis on efficiency, facilitation, effects and values obtained in UICs. They have been widely studied, both in terms of the reasons why they are formed, their structure and the effects they create, but not much in terms of how they work on a daily basis. There is less attention in the literature to analyse or problematise how UIC work is carried out when a connection has already been formed or is repeatedly enacted. Additionally, there is also a lack of studies looking at small firms UICs. Through identifying a lack of perspective in the UIC literature this thesis builds on the recent developments in practice theory in addressing some of the gaps found. It thus analyses these collaborations from a perspective not present in the literature in pursuit of how UICs are carried out.

    Through four embedded case studies between small enterprises and university researchers the thesis questions some of the assumptions made in the UIC literature and policy documents. First of all, through the practice theory lens, the thesis shows how the creation of a node/linchpin, a boundary object or a broker, between university and industry is instrumental in enabling collaboration work to take place. Secondly, being able to work together successfully does not equal outcomes sought after by policy organisations. Nevertheless, a general conclusion is that there were valuable outcomes for both the companies and the researchers, confirming previous research on UICs. But, these benefits were often difficult to put into clear numbers or metrics and appeared only after a very long time.

    The thesis argues that policy (and associated organisations) should promote the connection between a research site/practices and a company site/practices rather than pushing for a joint practice. In such a way UICs can be valuable for both researchers and companies. 

  • 34.
    Bertilsson Forsberg, Petter
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Industrial Engineering & Management.
    Collaborative practices and the temporal space between science and business2015Conference paper (Refereed)
  • 35.
    Bertilsson Forsberg, Petter
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Industrial Engineering & Management.
    Severinsson, Kristofer
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Industrial Engineering & Management.
    Exploring the virus metaphor in corruption theory: Corruption as a virus?2015In: Ephemera : Theory and Politics in Organization, ISSN 2052-1499, E-ISSN 1473-2866, Vol. 15, no 2, p. 453-463Article in journal (Refereed)
  • 36.
    Björklund, Andreas
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Industrial Engineering & Management.
    Ljunggren, Viktor
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Industrial Engineering & Management.
    Förbättring av ritningshantering hos ABB Industrial Automation Control Technologies2018Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Cost of poor quality describes what the lack of quality costs an organization. By understanding what the concept is and how it can be translated into a specific organization, it creates the conditions for eliminating them, and it can generate a saving of up to 30% of the organization's turnover.

    The study has been carried out at ABB Industrial Automation Control Technologies in Västerås within the group ABB AB. This work has focused on visualizing the problem and how it could be attacked. The purpose of the thesis is, "… to generate evidence about the management of drawings, as well as to propose measures that can improve this process. The aim is also to help ensure that there is a process where suppliers always produce based on the right and most recent edition. "

    The processes of drawing management have been visualized based on information from interviews, observations and secondary data that have been based on information from routines together with governing documents. Thereafter, deficiencies in this drawing management process have been identified and also the causes.

    The result from the thesis is a process mapping with identified shortcomings and the causes of these. A specification has been prepared for guidelines on how ABB Industrial Automation Control Technologies will work with improvements on this process.

  • 37.
    Borg, Emma
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Industrial Engineering & Management.
    Förutsättningar för lyckade projekt i komplexa miljöer: En studie om projektkomplexitets inverkan på kvalitetsarbete2018Independent thesis Advanced level (professional degree), 20 HE creditsStudent thesis
    Abstract [en]

    Studies show that the success of a construction project depends onits initial design work. Thus, it’s interesting to investigate howensuring design work quality is done. Since the mid 70’s SKB has worked on how the final repository of spent long-lived nuclearfuel should be built to satisfy the requirement of total repository from the people and environment for a period of 100,000 years. The project is large and consists of many subprojects; where one of them is carried out by WSP. The quality work in this project has been evaluated to see how the ensuring of reaching required quality and expectations.

    This type of project can be assumed to be complex both to control and execute, in terms of structural complexity, technical complexity and uncertain complexity. By characterizing the project due to its surroundings, content and organizational behaviour and to them apply the dimensions of complexity the aim of the study is to identify how the complexity has effect the quality work. To understand this, semi structured interviews with the project organization has been done.

    The result of the study shows that especially the structural complexity, mainly by the number of collaborated departments, affects the quality work. Also uncertain complexity affects the quality work, due to unclear contract between client and supplier. To receive better quality work in the future the coordination between different departments needs to be better. This involves for example establish project specific methods and routines, for all in the project to use. To be able to deliver successful projects one presumption is that client and supplier agreed on what is to be delivered. If the project scope isn’t clear agreedupon, a satisfied client can never be reached.

  • 38.
    Brecheisen, Sverre
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Industrial Engineering & Management.
    From, Richard
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Industrial Engineering & Management.
    Marknadsundersökning inom datacenterbranschen: Undersökning av tekniska inköp, med fokuspå kyllösningar2013Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    The purpose of this thesis is to examine how investments are justified in the Swedish data center industry, with a focus on cooling equipment. This is achieved through semi-structured interviews with 20 different interviewees. These interviewees represent different facets of the industry and facilitate an understanding of which factors, such as: investment costs, operating costs, reliability, environmental impact and the influence of external and internal actors, come into play and to which degree they impact the investment decision-making process. The results show that primarily low operating cost in the form of low energy consumption is the driving factor when it comes to the procurement of new equipment. A lower environmental impact is a positive side-effect of lower energy consumption. But alone it does not justify an additional investment. Data center downtime has a negative impact financially and can also adversely affect various functions critical to society. Therefore, the dependability of the equipment is still a priority, but reliability is now considered to have reached such a level that it is considered acceptable and the focus of development has shifted towards energy efficiency.

    The interview study is complemented by an investment-theory review of articles and books on related subject matter. This subject matter is linked directly or indirectly to disposition of investment in the data center industry. The framework developed from the review is then compared to the interview results. Results indicate that decision and investment theory in many cases can also be applied to data center investments. Theories that are more environmentally and socially oriented, such as Triple Bottom Line, are not consistent with the empirical data from the interviews. The investment decisions are also influenced by the current high availability and high reliability of data centers, which is the reason why the industry is rife with inertia, conservatism and skepticism to new solutions. Consequently, the parallel between data centers and high risk organizations, HRO, brought a new approach to how priorities are evaluated within HROs, namely that it is possible to combine high reliability with a low environmental impact.

    The results of the study are used as the basis to establish a marketing plan for the company SEE Cooling, a startup company that supplies cooling equipment. This marketing plan is based on the models for: Network analysis, Porter's five forces analysis, SWOT analysis and Kotler's marketing mix. The resulting marketing plan offers proposals on how SEE Cooling shall navigate their business network to overcome conservatism and promote their products, and illustrates potential difficulties.

  • 39.
    Carlstedt, Rikard
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Applied Mechanics, Byggteknik.
    Utvärdering av datorprogram för användning vid dagvattenutredningar2012Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The main object of this diploma work thesis is about how computer programs can be

    a tool to use for work on stormwater investigations. The advantage of using a

    computer program compared with calculations made by hand is evaluated and

    discussed. The computer programs that have been used for studies and a sequence of

    testing of the possibilities are Autodesks Storm and Sanitary Analysis and DHIs Mike

    Urban.

    Focus on sustainable development now permeates the building industry. As a result

    stormwater investigations have been conducted in an increasing extent the recent

    years. Stormwater is water produced due to precipitation, such as rain and snowmelt.

    Stormwater investigations normally contain descriptions of existing land use, planned

    land use and suggestions of measures and technical solutions for the future disposal of

    stormwater.

    The initial part of the thesis consisted of literature studies on stormwater and

    stormwater investigations to understand the science. Further literature studies

    where related to hydraulic and hydrologic modeling. An analysis of the interest and

    way of applying these methods among municipalities and sewer companies where

    performed. Literature studies and situation analysis formed the basis for the design of

    the evaluation methodology where a number of key points were chosen and

    followed-up for both programs.

    The results of the thesis shows that there is a big advantage in using computer

    simulations for accurate mapping of the pipe networks provided that you also have

    the means to calibrate the hydrologic and hydraulic models. For less accurate

    analyzes, computer programs may be seen as a tool for data management.

  • 40.
    Davis, Matthew
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Industrial Engineering & Management.
    Commercialisation of Alternative Energy Technologies: A Case Study of Ripasso Energy AB2018Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
  • 41.
    Doshi, Jiten
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Biology Education Centre. ETH Zurich.
    A platform for Chinese hamster ovary (CHO) cell genome engineering2016Independent thesis Advanced level (degree of Master (Two Years)), 30 credits / 45 HE creditsStudent thesis
    Abstract [en]

    The production of therapeutic recombinant proteins in heterologous systems has gained significance since the last decade. For recombinant proteins that require post-translational modifications (PTMs), mammalian systems are preferred. Chinese hamster ovary (CHO) cells are the mammalian cells of choice for production of recombinant proteins. This is because of their ability to provide correct protein-folding and post-translational modifications, displaying high productivity at large scale, ability to grow in suspension mode at high densities in a serum-free media, incapable of infection by most viruses and their history of regulatory approvals. There is an established state of the art technology for development of CHO cells for recombinant protein production. This technology relies on random integration of the gene of interest and gene amplification process for obtaining high expressing clones. There is a high degree of clonal heterogeneity and instability observed in the screened clones. To overcome the process of random integration, this report describes a lentivirus based screening for search of stable and high expressing integration sites in CHO cells. The integration sites are identified by using nrLAM-PCR (non-restrictive linear amplification mediated PCR) coupled with high throughput sequencing. Lentivirus are chosen as they preferentially integrate within the coding regions rendering the possibility of obtaining stable and high expressing clones. In addition, lentivirus vector is designed to possess landing pad for recombinase mediated cassette exchange of viral sequence with foreign DNA. The report describes a successful cassette exchange reaction but with low efficiency. Genome engineering technologies such as CRISPR/Cas, TALENs can used for targeted gene insertion at integration sites and thus establishing stable and efficient production of recombinant proteins in CHO cells. Additionally, an approach for designing synthetic promoters based on Ef1α promoter architecture has been shown. Synthetic promoters are useful for expression of multi-gene cassettes as they are short in length and provide comparable expression levels to the native mammalian promoter. 

  • 42.
    Edman, Jimmy
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences.
    Fjodorov, Anton
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences.
    Wilhelmsen, Marc
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences.
    Augmented Commerce Index: Värdeskapande lösningar inom e-handeln2012Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Today there are many technical solutionsfor the e-commerce industry, incombination with a change in behavior ofthe end user. The consumer of todaydemands more availability andconvenience.This Master’s thesis has examined thecritical aspects of e-commercecompanies, as well as how they candevelop their e-commerce to create valuefor the end user. The aim has been toidentify the more and less importantfactors of the e-commerce business, andto investigate the extent to which thesefactors are used in the e-commerceindustry. To answer these questions, aninteractive, online questionnairecustomized for e-commerce companies wasdeveloped. It covers the areas oftraditional e-commerce, social media,mobile commerce and multiple channels.The individual results are presented atthe end of the questionnaire andcompared to the average result of thecompanies that have completed it. Aliterature review and an interview isthe basis for the questionnaire. Aweighting and a quantification of thequestions enabled comparison and wasconducted in order to generate businessvalue. Thereafter a pilot study wasconducted, in which thousands of ecommercecompanies were asked to fill inthe questionnaire, eventually resultingin 12 companies accepting the inquiry.A part of the results of the thesis isthe web questionnaire itself, where thecritical factors are presented. The webquestionnaire was weighted by the totalknowledge gathered by the literature andinterview study. The prioritized factorscan be seen in the questionnaire. Theresults of the pilot study show that 12companies have great potential toimprove their e-commerce since none ofthe entrants reached less than half ofthe questionnaire’s maximum points.

  • 43.
    Eklinder-Frick, Jens
    et al.
    Uppsala University, Disciplinary Domain of Humanities and Social Sciences, Faculty of Social Sciences, Department of Economic History.
    Linné, Åse
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Industrial Engineering & Management.
    The Geographical Dimension in the Interactive World – The Importance of Place2017In: No Business is an Island: Making Sense of the Interactive Business World, Bingley: Emerald Group Publishing Limited, 2017, p. 123-139Chapter in book (Refereed)
  • 44.
    Ekstrand, Oscar
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences.
    Desai, Sagar
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences.
    Egenskapsdriven utveckling: En fallstudie på Scanias forskning & utvecklingsavdelning2017Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Purpose: The study has been performed in order to investigate the possibilities of visualizing customer value generated by Scania’s project portfolio. By designing a method able to visualize the customer value in the project portfolio, the aim is to make it easier to prioritize projects and to mediate the company's strategic goals to an operational level.

    Research questions: 1. How is customer value integrated into Scanias project portfolio management? 2. What challenges does property driven development cause at Scania? 3. How can a method be designed in order to visualize the customer value within Scanias project portfolio?

    Methodology: This master thesis has been performed as an abductive case study at Scania’s research and development division in Södertälje. A qualitative approach has been used where approximately 30 interviews has been the main source for primary data. In addition, secondary data extracted from internal documents has been used in order to understand the company specific context. Literature that addresses customer value and project portfolio management has guided the study.

    Findings: A method named “Earned Customer Value-GANTT” has been designed, which is able to estimate the future customer value within the project portfolio. By using this method, it is possible to manage the project portfolio with regard to what customer value the company want to deliver in the future. No other similar methods have been identified making it a new way to manage the portfolio. However, the method comes with a few challenges that are both company specific as well as general.

  • 45.
    Engström, Linnéa
    Gotland University, School of the Humanities and Social Science.
    Barnservis2011Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Innovator Håkan Berndtsson has developed an idea for a new spin on cutlery for small children to start learning to feed themselves. The idea is investigated in this graduation project to create an overall concept of a dinner set for children. The focus lies on developing Berndtssons cutlery were knife, fork and spoon is included. This is accomplished by applying the design methodology.

    A common problem with many types of cutlery for children today is that the children have difficulty getting a grip that is easy to use for bringing food to the mouth. This results in a lot of wasted food and messy meals. The kids lose their patience when they encounter too much difficulty with the cutlery and they will ingest less food with each bite.

    The target group for the project were children in the beginning to learn how to eat themselves with different meal gear. This is done in a span of about one to three years depending on the child's individual development.

    The solution to the problem consists of a grip that combines a power and precision grip for the fork and spoon.

    With this grip the child can without further effort bring the food to the mouth with precision. The knife has a different function and is therefore designed for this, namely, cutting and squashing food. Overall suggestions for the solutions to the mug, plate and bowl has been made. The idea for the cup is that it is able to develop and change its functions as the child itself develops, by replacing parts of the mug. The plate and bowl can be inserted in one another and therefore create a lunchbox that can ie. be included in excursion.

    The result consists of three cutleries, a fork, a spoon and a knife where all of the grips are developed through the use of ergonomic studies and in close collaboration with a pre-school. The development of the remaining parts of the dinner set was stopped after revising the project at the end of the “idea generation”-process. The result has an idiom that consists of a pervading animal theme that binds together the cutlery to unified concept. The theme of animals is relatively gender neutral and are pedagogically suited for younger children. The cutlery grip is composed of plastic with the eating part of stainless steel.

  • 46.
    Eriksson, Felicia
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Applied Mechanics, Byggteknik.
    Samverkanskonstruktioner i stål och betong: prestanda, lönsamhet och utförande: Jämförelse mellan samverkanskonstruktioner och platsgjutna, slakarmerade betongkonstruktioner2017Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The problem that lays the foundation of this dissertation is thatcomposite structure in steel and concrete is said to have bettercharacteristics than used in practice. The purpose of this report isto compare an composite structure in steel and concrete with a situ,slack reinforced concrete construction. The main task is to examine ifcomposite structure can reach and sustain large span widths, but theperformance and economics will also be considered in the calculations.The method used in this research is mainly based on calculations ofthe different construction types, but of course, a theroetical part isalso necessary including literature searches to provide a goodbackground. In addition, a study visit is conducted to see theperformance of a collaborative design and to interview the workers.The result showed that composite structure works very well with largespan widths, while slack reinforced concrete constructions were not assuitable. The concrete construction need a beam with a width of 750 mmand the height at 1050 mm and also a concrete floor with a thicknessof 250 mm. Composite structure consists of a HEB600 and a concretefloor with the thickness of 250 mm wich gives a deflection of 36,7 mmat the length of a 12 meter span. The conclusion of this research isthat composite structure has a great area of use with large spanwidths.

  • 47.
    Eriksson, Jonas
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Industrial Engineering & Management.
    Utveckling av förbättringsprocess och kommunikation i Structor Uppsala2017Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Quality improvement inherently requires continuous improvement in an iterative process to meet and exceed customer needs. Through applying an action research strategy and the quality principles of the cornerstone model Structor Uppsala has undergone a research process based on participation. The aim of the study has been to develop the organization’s improvement process and internal communication regarding said process. The study has revolved around the questions (1) How can Structor Uppsala improve their improvement process? and (2) How can Structor Uppsala communicate internally with regards to their improvement process?

    By discussing improvement from a traditional perspective and as an evolutionary process during workshops the organization itself has developed a vision for how the improvement process in Structor could be managed in the future. Structors vison was based on collecting and managing improvement proposals. The organization's vision for the future was supplemented with theoretical requirements such as: feedback on improvement proposals needs to be given regularly, the management of proposals should contain follow-up points, the existing management system should be integrated and the improvement process should be iterative and build on the cycle: plan, do, study, act. A workflow detailing how Structors improvement process can be structured and what communication channels could be used to support the proposed workflow were defined based on Structors requests and the theoretical demands formulated.

    The study shows that (1) Structor Uppsala's improvement process can initially be improved by introducing a structured improvement process based on the created workflow. The proposed structure should be regarded as a beginning and a platform for subsequent improvement of the iterative improvement process. (2) Communication connected to the improvement process should utilize existing communication channels able to convey communication rich in content. Communication regarding improvement is therefore suggested to primarily take place during existing regular meetings complemented with digital platforms already used by the organization.

  • 48.
    Ersbo, Petter
    Uppsala University, Disciplinary Domain of Science and Technology, Mathematics and Computer Science, Department of Information Technology, Division of Systems and Control. The University of Newcastle.
    Displacement Estimation for Homodyne Michelson Interferometers Based on Particle Filtering2018Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    The current method for displacement estimation for homodyne Michelson interferometer is biased and gives little information about the statistical properties of the estimate. This thesis suggests an alternative estimation method, which has the potential to address these shortcomings. The method is based on a bootstrap Particle smoother, and gives similar displacement estimate quality compared to the least squares based method that is commonly used today. It is however significantly more computationally intensive, and hence the estimation quality has to be improved, while reducing the execution time, to obtain an algorithm that improves on the current one.

    In total, four estimation methods, based on particle filters or particle smoothers, are implemented in Matlab and evaluated. The recommended method is the most accurate one and is simple to implement in other programming languages. Most of the evaluation is done based on simulated data, but the three methods that work are tested on measured data as well. They all give reasonable displacement estimates for the measured data, but as the true displacement is unknown, the quality of the estimates cannot be assessed based on the measured data.

    Apart from the evaluation of the estimation methods, an introduction to both particle filtering and interferometry is given in the report, as well as a summary of the current, least squares based, estimator.

  • 49.
    Etelhag, Felix
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences.
    Åström, Jonas
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences.
    Effektivisering av delprocessen utleveranser: Ett förbättringsarbete på Gotlandssnus AB2018Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Gotlandssnus AB is an industrial organization that produces tobacco product snus and the nicotine-free option Qvitt. The company has experienced rapid growth since 2004 and qualitywork has been affected. After completion of a preliminary study, the subprocess deliveries was considered to be in need of improvement. The employees felt that the process consisted of unnecessary and time-consuming moments. The purpose of the study was to develop an improvement proposal for test including an implementation plan for the subprocess deliveries. Questions used in the study was (1) How can the subprocess delivery be improved? (2) Are proposed actions lead to improvment? (3) Can values, practices and tools from offensive quality development be applied in the improvement work of the subprocess deliveries? The theoretical background shows that offensive quality development can be described as a combination of values, practices and tools that work together to actively prevent quality shortages and promote continuous improvement efforts, instead of controlling and repairing. The DMAIC approach has provided the basis for the improvement work, where focus group meetings, semistructured interviews and observations have been used to collect qualitative data. For the collection of quantitative data, order history has been obtained and a time study has been conducted to base decisions on facts. The collected data has been analyzed using quality tools. The result shows that (1) The perceived problem with the subprocess was ineffective moments where the moment of labeling proved to be most time consuming and was considered duplication. In the subprocess production there was already a labeling moment that was possible to change. The moment could therefore be moved from subprocess deliveries to subprocess production. (2) The improvement resulted in increased efficiency in the subprocess deliveries without affecting the efficiency in the subprocess production. (3) The practic method DMAIC has created a systematic workflow in the improvement work using values that have been guiding. Tools have created the conditions for defining problems, measurement, analysis and improvement.

  • 50.
    Filate, Sisay Semere
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences.
    Investigation of an energy refurbishment concept for office building using Nanoger/Aerogel insulation plaster and replaced windows by building simulation2014Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Energy retrofitting, i.e energy savings

    and the optimal use of energy, are the

    prerequisite for closing the gap between

    finite resources and increasing energy

    demand. Energy retrofitting also means

    increasing the value of the building and

    making it more durable and comfortable.

    These days’ energy-efficiency standards

    for buildings become increasingly

    important, but using a traditional

    insulation material such as mineral

    wool, expanded polystyrene and cellulose

    insulation materials often means having

    to accept increasingly thick layers of

    insulation in walls, floors, and roofs.

    This consumes valuable floor space in

    new construction. In renovation

    projects, it is not even possible to

    increase insulation thickness without

    significant aesthetic and functional

    compromises.

    This specific master thesis investigates

    the energy refurbishment concept of an

    old Telegraphengebäude (telegraph

    building) using Nanogel®Aerogel

    insulating plaster having a thermal

    efficiency of 2 to 4 times better than

    traditional insulation materials. The

    old building is located in the northwest

    district of Karlsruhe, Germany and

    built in between 1906 and 1907.

    An initial DesignBuilder simulation

    result of the old telegraph building

    loss around 179 MWh of heat energy every

    winter. As part of building renovation,

    external walls are insulated with very

    low thermal conductance SLENTIT Aerogel

    insulation board, windows are changed to

    double glazed low-e coated windows, roof

    attic is insulted with mineral wool, and

    the building is air tightened. This

    refurbishment turns in a reduction of

    total building energy loss by 61% and an

    improvement in primary space heating

    demand by 78% in heating season.

1234 1 - 50 of 187
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