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  • Rural Digital Europe
  • Bachelor thesis
  • Digitala Vetenskapliga Arkivet - Ac...

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  • image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    Authors: Berntsson, Mathias; Vernersson Krook, Gustaf; Thunberg, Karl-Johan;

    Efterfrågan av energi ökar på grund av den ökande globaliseringen i världen. För att transmittera och distribuera elektrisk effekt används transformatorer. ABB Power Grids AB är världsledande inom produktion av transmissionskomponenter däribland högspänningstransformatorer. Transformatorer är tidskrävande och komplext att tillverka vilket har lett till att all produktion hos ABB Power Grids idag sker manuellt. En av transformatorns mer framstående komponenter är kärnan som bidrar med en effektivare reglering till mindre förluster. Kärnan konstrueras av tusentals tunna elektroplåtar som staplas omlott på varandra och vävs ihop till en sammanhängande struktur, detta enligt ett kärnläggningsmönster. Plåtarna i sig är otympliga att hantera då de är långa, tunna och vassa. Manuell stackning av elektroplåtar har visat sig ge upphov till en del skador då lyften är många och slitsamma, därtill har plåtarna legat till grund för otäcka skärskador. I och med detta har ett intresse för automation väckts i hopp om att reducera arbetsskador. Vid första anblick kan kärnläggningen anses vara perfekt för automation då arbetsmomentet är enkelt och repetitiva. Incitamentet för automation ökar ytterligare i hänseende till arbetsmiljön. Komplikationerna uppstår när arbetet bryts ner. Under ytan är det en utstuderad process där krav på produkt är höga med strikta toleranser. Därtill har arbetet beskrivits som något man behöver en viss känsla för då arbetet anpassas genom hela processen. Detta försvårar automation betydligt då dagens tillverkningsprocess är svår att fullt ut härma med robotar eller portaler. Därför behövs avgränsningar behöver göras för att hitta avvägning mellan slitsamt arbete och finess. Området för automation begränsas därför till stackningsprocessen. Genom att fokusera på stackningen flyttas de slitsamma och farliga lyften från manuell arbetskraft till automation samtidigt som kontroll, justering och slutmontage behålls manuellt. På så sätt kan produktionen av transformatorkärnor göras lämpad för automation då det allra mest tidskrävande momenten inte behöver utföras av människan. Detta är innebär emellertid inte att automation görs utan svårigheter. Kärnornas storlekar samt den precision som krävs vid läggning sätter höga krav på den automationslösning som ska implementeras. För att en automationslösning ska klara av att stacka alla de typer av kärnor som idag tillverkas på ABB Power Grids kommer stora strukturer behöva upprättas för att utföra arbeten med extrem precision. Detta sätter höga noggrannhetskrav på de automationsmodeller som upprättas. Vidare, produktionsområdet där automation idag avses är väl utstakat och anpassat efter manuellt arbete. Detta innebär att automationsmodeller som idag finns på marknaden behöver omarbetas för att passa in i dagens produktion hos ABB Power Grids. Slutligen måste frågan ställas om modifierade lösningar kan göras noggranna nog eller om större ingrepp på produktionsområden behövs göras. I förstudien presenteras olika automationsmodeller som har utvecklats för att integreras hos ABB Power Grids, dessa är Portalmodeller, Länkarmsmodeller och Inmatningsmodeller. Utformningsförslagen har sedan analyserats och jämförts för att ge ABB PG ett utgångsläge för vidareutveckling av automatisering av stackningsmomentet. Resultatet blev fem automationsmodeller, två använder sig av länkarmsrobotar och tre är portaler. Vidare så har två automatiserade inmatningsmodeller upprättats för att ytterligare reducera den manuella hanteringen av elektroplåtar. ABB Power Grids rekommenderas att inledningsvis gå vidare med Robotmodell 1.

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    Authors: Rozmus, Joanna; Naaom, Rita;

    Digitaliseringen inom banksektorn har under de senaste åren utvecklats konstant. De stora förändringar som har skett inom banksektorn har lett till att konsumenterna idag kan utföra sina banktransaktioner vilken tid som helst på dygnet, utan att behöva besöka ett bankkontor. De digitala verktygen representerade huvudsakligen av Internetbanken, Telefonbanken, Mobilt BankID och Swish har underlättat för konsumenterna att hantera sina ärenden på ett smidigt och enkelt sätt, vilket har lämnat sina spår på den marknaden som bankerna verkar i. En stor del av bankkontoren i Stockholms län avvecklas då den fysiska kontakten minskar. Storbankerna SEB, Swedbank, Handelsbanken samt Nordea får nu en mycket stor utmaning att skapa kundlojalitet med konsumenterna då kundkontakten försvinner. Detta gör det även svårare för storbankerna att knyta kontakt med nya konsumenter. Syftet med denna studie är att belysa hur en utökad digitalisering av tjänster påverkar kundlojalitet till bankerna på den svenska marknaden. Uppsatsen ger en översikt av valda marknadsförings teorier och relevanta begrepp avseende bankens digitalisering och dess påverkan på kundlojaliteten. Därefter presenteras val av metod och motivet bakom valet. I den empiriska delen presenteras undersökningsdata med tillhörande analys av de insamlade data. Studien avslutas med en sammanfattad diskussion kring resultat och därefter redovisas studiens slutsats. Digitalization in the banking sector has evolved steadily in recent years. The major changesthat have taken place in the banking sector have led consumers to carry out their bank affairs atany time of the day without having to visit a bank office. The digital tools represented mainlyby the Internet Bank, Telephone Bank, Mobile BankID and Swish, have made it easier forconsumers to handle their banking transactions in a smooth and easy way, which has left theirmark on the market in which banks operate. A large part of the bank offices in StockholmCounty are ceased as physical contact is reduced. The big banks SEB, Swedbank,Handelsbanken and Nordea have a very big challenge now to create customer loyalty withconsumers as the customer contact disappears. This makes it even harder for major banks toconnect with new consumers. The purpose of this study is to illustrate how an increased digitalization of services affectscustomer loyalty to the banks in the Swedish market. The essay provides an overview ofselected marketing theories and relevant concepts regarding the bank's digitization and itsimpact on customer loyalty. Thereafter, the choice of method and the motivation behind theselection are presented. In the empirical part, survey data are presented with the accompanyinganalysis of the collected data. The study concludes with a summary discussion of results andafterwards the conclusion is presented.

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    Authors: Brandt, Juliana;

    In recent years, the train's punctuality, Sweden's ranking in the European Railway Performance Index and the train industry's customer satisfaction have decreased. The largest and most influential players in the train industry are Trafikverket and SJ AB, which are two state-owned organizations. The low customer satisfaction in the train industry is based on SJ AB’s failure to deliver the latest traffic information in case of delay. Since Trafikverket manages the majority of the railway network and SJ AB is Sweden's largest train operator, there is a high degree of mutual dependence between them in order for each organization to be able to conduct its business. At present, there is a clear division of responsibility between these actors regarding how and where the traffic information is distributed. Where the Trafikverket is responsible for conveying all information on its website and on the signs while SJ AB is responsible for conveying information on its website and in its application, as well as via textmessage and mail communication. The processes for communication between the actors regarding delays, track changes and other changes in the journey are done manually with digital tools as support. Today, several uncertainties are experienced in these processes, based on the fact that traffic control at SJ AB currently does not receive any confirmation from Trafikverket if any changes have been made. Due to these factors, this study will investigate the flow of information between SJ traffic control and the Trafikverket’s train services. Therefore, the purpose of this thesis was to identify existing communications, more specifically information flows of traffic data, between the organizations and their passengers, along with identifying possible improvements in the information flows through digitization. The thesis also explores the change opportunities for a department with many manual processes. The study was conducted with a multi-method structure consisting of a literature study, observation study, questionnaire study, interview study and benchmarking. During the observation, questionnaire and interview study, the focus was on employees at SJ traffic control and other relevant departments at SJ AB and the benchmarking was conducted through external interviews. This led to the identification of the main reasons of mismanagement of traffic information and best practices. This was later analyzed with the help of collected theory, which then led to discussion, conclusion and recommendations to SJ AB. It’s obvious that traffic information has low status within SJ AB as well as the interorganizational alliance. This has hampered the development of internal processes related to managing traffic information and therefore the processes lack standardized procedures and structured routines. The main reasons of mismanagement of traffic information depend on the human factor and specific individuals. This is based on the fact that it was clear that both traffic controls perceived the received traffic information difficult to interpret and unstructured, this depending on who sent the information. This due to the fact that the individuals use varying expressions and internal technical language. To be able to improve and in the future automate the information flows between the actors a standardized working procedure with associated technical language is required in the industry. To establish a technical language, the status of the traffic information must be increased within the organizations and a dictionary for which expressions should be used, where all used expressions are listed and defined. Additionally, a clearer goal of the alliance is required.

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    Authors: Blänning, Erik; Ivarsson, Caroline;

    When natural disasters such as earthquakes happen, there is a need for an efficient method to support humanitarian aid organizations in the decision making process. One such decision is placement of Foreign Field Hospitals to assist with medical help.To support such a decision lots of different information and data needs to be gathered and combined. The main objectives of this thesis are to collect existing data published shortly after the earthquake in Haiti 2010 as well as data published up to two months after the earthquake. The data is then to be evaluated according to adequacy for analysis and the result of the analysis to be compared to the actual placements of the field hospitals after the 2010 earthquake.The method used in this analysis is Multi Criteria Evaluation (MCE). Data regarding population, elevation, roads, land use, damage, climate, water, health facility locations and airport location are collected and weighted relative with the Analytic Hierarchy Process (AHP) with weights retrieved from a questionnaire sent out to Non-Governmental Organizations (NGOs) and countries involved in the disaster relief. The result obtained from the MCE is a final suitability map depicting areas that are suitable according to the different factors.The data availability for the thesis project is an issue, due to lack of data published shortly after the earthquake. Some of the data used in the analysis do not have the sufficient detail level. Still, an analysis can be performed where suitable areas are obtained.The suitable locations found in the analysis agree well in most cases with where the actual FFHs are placed, however a few locations are not in proximity to where the suitable areas lie. A few of the locations were located in areas exposed to frequently floods. Even though the data availability and quality leaves things to desire, the analysis method shows promising results for future research. The approach could help aggregating information from different sources and provide support in pre-dispatch organization, already having a set of suitable locations to arrive to.

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    Authors: Grünwald, Norbert;

    Mixed Reality is the combination of the real world with a virtual one. In robotics thisopens many opportunities to improve the existing ways of development and testing. Thetools that Mixed Reality gives us, can speed up the development process and increasesafety during the testing stages. They can make prototyping faster and cheaper, and canboost the development and debugging process thanks to visualization and new opportunitiesfor automated testing.In this thesis the steps to build a working prototype demonstrator of a Mixed Realitysystem are covered. From selecting the required components, over integrating them intofunctional subsystems, to building a fully working demonstration system.The demonstrator uses optical tracking to gather information about the real world environment.It incorporates this data into a virtual representation of the world. This allowsthe simulation to let virtual and physical objects interact with each other. The results ofthe simulation are then visualized back into the real world.The presented system has been implemented and successfully tested at the HalmstadUniversity.

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    Authors: Zvolánková, Eliška;

    The aim of this paper is to explain the concept of global journalism and to describe its presence in the Czech Republic. The development of journalism in the last years, which is connected to globalisation and digitalisation of media, and various global journalism theo-ries are introduced first to give the theoretical background. Then Peter Berglez's theory of global journalism is accepted as the main one for this work and it is described into greater details, including strong and weak points, criticism, problems and challenges. That is the core of the theoretical part of this work. The history and media of the Czech Republic are shortly addressed before the actual research. That is done with the help of mixed methods – quantitative surveys and content analyses and qualitative interviews – to answer four research questions: the awareness about the existence of global journalism, opinions about it, the influence of education and the presence of global journalism in Czech media.

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    Authors: Ahlmer, Anna-Klara;

    The expected increase in precipitation and temperature in Scandinavia, and especially short-time heavy precipitation, will increase the frequency of flooding. Urban areas are the most vulnerable, and specifically, the road infrastructure. The accumulation of large volumes of water and sediments on road-stream intersections gets severe consequences for the road drainage structures. The need for a tool to identify characteristics that impacts the occurrence of flooding, and to predict future event is thus essential. This study integrates the spatial and temporal soil moisture properties into the research about flood prediction methods. Soil moisture data is derived from remote sensing techniques, with focus on the soil moisture specific satellites ASCAT and SMOS. Furthermore, several physical catchments descriptors (PCDs) are used to identify catchment characteristics that are prone to flooding and an inventory of current road drainage facilities are conducted. Finally, the index of sediment connectivity (IC) by Cavalli, Trevisani, Comiti, and Marchi (2013) is implemented to assess the flow of water and sediment within the catchment. A case study of two areas in Sweden, Västra Götaland and Värmland, that was affected by severe flooding in August 2014 are included. The results show that the method with using soil moisture satellite data is promising for the inclusion of soil moisture data into estimations of flooding and the index of sediment connectivity. De förväntade ökningarna i nederbörd och temperatur i Skandinavien, och speciellt extrem korttidsnederbörd, kommer att öka frekvensen av översvämningar. Urbana områden är de mest sårbara, och speciellt väginfrastrukturen. Ackumuleringen av stora volymer av vatten och sediment där väg och vattendrag möts leder till allvarliga konsekvenser för dräneringskonstruktionerna. Behovet av ett verktyg för att identifiera egenskaper som påverkar förekomsten av översvämningar, och för att förutsäga framtida händelser är väsentligt. Studien integrerar markfuktighet både rumsligt och tidsmässigt i forskningen om metoder för översvämningsrisker. Markfuktighetsdata är inkluderat från fjärranalysteknik, med fokus på de specifika satelliterna för markfuktighet, ASCAT och SMOS. Vidare är flertalet faktorer (PCDs) inkluderade för att identifiera egenskaper i avrinningsområden som är benägna till översvämning samt en inventering av nuvarande vägdräneringskonstruktioner. Slutligen är ett index med sediment connectivity (Cavalli et al., 2013) implementerat för att se flödet av vatten och sediment inom avrinningsområdet. En fallstudie med två områden i Sverige, Västra Götaland och Värmland, som drabbades av allvarliga översvämningar i augusti 2014 är inkluderat. Resultaten visar att metoden att använda markfuktighet från satellitdata är lovande för inkludering i uppskattningar av översvämningsrisk och i indexet med sediment connectivity.

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    Publikationer från KTH
    Bachelor thesis . 2017
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    Thesis . 2017
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      Publikationer från KTH
      Bachelor thesis . 2017
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    Authors: Wolak, Peter; Johansson, Mattias;

    With the rapid development of computers and their proven usability in manufacturing environments, simulation-based optimisation has become a recognised tool for proposing near-optimal results related to manufacturing system design and improvement. As a world-leading manufacturer within their field, Volvo GTO in Skövde, Sweden is constantly seeking internal development and has in recent years discovered the possibilities provided by flow simulation. The main aim of this thesis is to provide an optimal buffer size of a new post-assembly and packaging line (Konpack) yet to be constructed. A by-product of the flow simulation optimisation project in form of a flow simulation process evaluation was also requested. The simulation project started with a pre-study including the development of the frame of reference and an analysis of the literature focused on merging Lean philosophy with simulation-based optimisation. The simulation model was built based on both historical and estimated data. The optimisation results showed different buffer size alternatives depending on the throughput to be achieved, these are discussed, and near-optimal solutions presented for decision-making. Additionally, four experiments were carried out, both contributing to the model’s credibility as well as providing new and valuable insight to the stakeholders. The conclusions drawn from the optimisation and experiments indicate that Konpack will be able to meet the established throughput goals, provided that the suggested near-optimal solutions are considered. The experiments also unanimously point to the fact that Konpack has a built-in overcapacity, utilizable by optimising certain suggested input parameters. Additionally, an evaluation of the completeness of the standard simulation process employed by Volvo GTO is provided, concluding that no major changes are needed. Nevertheless, there is always room for improvement. Hence, future work regarding the flow simulation process at Volvo GTO is proposed.

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    Authors: Krantz, Marthin; Andersson, Rikard;

    Force control is introduced to robots to solve the problem in machining applications due to the fact that the robot compliance might cause deviation between actual and desired robot path. Also large tolerances in the casting process as well as positioning errors from the clamping create deviations for which the force control technology can adept. Force control has also shown successful in automatic learning of paths along non linear surfaces. This study investigates the possibility of introducing robots equipped with force control at Volvo Aero Corporation in order to robotize polishing and deburring processes. These are today performed by manual labor. This study investigates more specifically the ABB Force Control machining application package. The polishing process has shown to be very complex and today’s version of the ABB force control package cannot give sufficiently robust results to be recommended for implementation. The major issue is the non-existing compliance of tool orientation needed to adapt to casting and positioning deviations due to varying work piece dimensions. The deburring process has however shown to be easier to handle, and a robot cell and methodology is proposed in this report.

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    Authors: Christian, Thomas; Marechal, Dennis;

    The purpose of this paper is to understand how supermarkets are able to meet their sustainability goals and accelerate them through digitized efforts. Qualitative research through case studies and primary data collected with interviews were conducted. It can be concluded that sustainability efforts get accelerated with the aid of digitalization. The participants of the interview showed on numerous levels that digitalization goes hand in hand with sustainability and helps expedite these efforts. The model brought forward by the authors seems to be rather relevant, additionally, it explains the phenomena concrete and accurately.

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  • image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    Authors: Berntsson, Mathias; Vernersson Krook, Gustaf; Thunberg, Karl-Johan;

    Efterfrågan av energi ökar på grund av den ökande globaliseringen i världen. För att transmittera och distribuera elektrisk effekt används transformatorer. ABB Power Grids AB är världsledande inom produktion av transmissionskomponenter däribland högspänningstransformatorer. Transformatorer är tidskrävande och komplext att tillverka vilket har lett till att all produktion hos ABB Power Grids idag sker manuellt. En av transformatorns mer framstående komponenter är kärnan som bidrar med en effektivare reglering till mindre förluster. Kärnan konstrueras av tusentals tunna elektroplåtar som staplas omlott på varandra och vävs ihop till en sammanhängande struktur, detta enligt ett kärnläggningsmönster. Plåtarna i sig är otympliga att hantera då de är långa, tunna och vassa. Manuell stackning av elektroplåtar har visat sig ge upphov till en del skador då lyften är många och slitsamma, därtill har plåtarna legat till grund för otäcka skärskador. I och med detta har ett intresse för automation väckts i hopp om att reducera arbetsskador. Vid första anblick kan kärnläggningen anses vara perfekt för automation då arbetsmomentet är enkelt och repetitiva. Incitamentet för automation ökar ytterligare i hänseende till arbetsmiljön. Komplikationerna uppstår när arbetet bryts ner. Under ytan är det en utstuderad process där krav på produkt är höga med strikta toleranser. Därtill har arbetet beskrivits som något man behöver en viss känsla för då arbetet anpassas genom hela processen. Detta försvårar automation betydligt då dagens tillverkningsprocess är svår att fullt ut härma med robotar eller portaler. Därför behövs avgränsningar behöver göras för att hitta avvägning mellan slitsamt arbete och finess. Området för automation begränsas därför till stackningsprocessen. Genom att fokusera på stackningen flyttas de slitsamma och farliga lyften från manuell arbetskraft till automation samtidigt som kontroll, justering och slutmontage behålls manuellt. På så sätt kan produktionen av transformatorkärnor göras lämpad för automation då det allra mest tidskrävande momenten inte behöver utföras av människan. Detta är innebär emellertid inte att automation görs utan svårigheter. Kärnornas storlekar samt den precision som krävs vid läggning sätter höga krav på den automationslösning som ska implementeras. För att en automationslösning ska klara av att stacka alla de typer av kärnor som idag tillverkas på ABB Power Grids kommer stora strukturer behöva upprättas för att utföra arbeten med extrem precision. Detta sätter höga noggrannhetskrav på de automationsmodeller som upprättas. Vidare, produktionsområdet där automation idag avses är väl utstakat och anpassat efter manuellt arbete. Detta innebär att automationsmodeller som idag finns på marknaden behöver omarbetas för att passa in i dagens produktion hos ABB Power Grids. Slutligen måste frågan ställas om modifierade lösningar kan göras noggranna nog eller om större ingrepp på produktionsområden behövs göras. I förstudien presenteras olika automationsmodeller som har utvecklats för att integreras hos ABB Power Grids, dessa är Portalmodeller, Länkarmsmodeller och Inmatningsmodeller. Utformningsförslagen har sedan analyserats och jämförts för att ge ABB PG ett utgångsläge för vidareutveckling av automatisering av stackningsmomentet. Resultatet blev fem automationsmodeller, två använder sig av länkarmsrobotar och tre är portaler. Vidare så har två automatiserade inmatningsmodeller upprättats för att ytterligare reducera den manuella hanteringen av elektroplåtar. ABB Power Grids rekommenderas att inledningsvis gå vidare med Robotmodell 1.

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    Authors: Rozmus, Joanna; Naaom, Rita;

    Digitaliseringen inom banksektorn har under de senaste åren utvecklats konstant. De stora förändringar som har skett inom banksektorn har lett till att konsumenterna idag kan utföra sina banktransaktioner vilken tid som helst på dygnet, utan att behöva besöka ett bankkontor. De digitala verktygen representerade huvudsakligen av Internetbanken, Telefonbanken, Mobilt BankID och Swish har underlättat för konsumenterna att hantera sina ärenden på ett smidigt och enkelt sätt, vilket har lämnat sina spår på den marknaden som bankerna verkar i. En stor del av bankkontoren i Stockholms län avvecklas då den fysiska kontakten minskar. Storbankerna SEB, Swedbank, Handelsbanken samt Nordea får nu en mycket stor utmaning att skapa kundlojalitet med konsumenterna då kundkontakten försvinner. Detta gör det även svårare för storbankerna att knyta kontakt med nya konsumenter. Syftet med denna studie är att belysa hur en utökad digitalisering av tjänster påverkar kundlojalitet till bankerna på den svenska marknaden. Uppsatsen ger en översikt av valda marknadsförings teorier och relevanta begrepp avseende bankens digitalisering och dess påverkan på kundlojaliteten. Därefter presenteras val av metod och motivet bakom valet. I den empiriska delen presenteras undersökningsdata med tillhörande analys av de insamlade data. Studien avslutas med en sammanfattad diskussion kring resultat och därefter redovisas studiens slutsats. Digitalization in the banking sector has evolved steadily in recent years. The major changesthat have taken place in the banking sector have led consumers to carry out their bank affairs atany time of the day without having to visit a bank office. The digital tools represented mainlyby the Internet Bank, Telephone Bank, Mobile BankID and Swish, have made it easier forconsumers to handle their banking transactions in a smooth and easy way, which has left theirmark on the market in which banks operate. A large part of the bank offices in StockholmCounty are ceased as physical contact is reduced. The big banks SEB, Swedbank,Handelsbanken and Nordea have a very big challenge now to create customer loyalty withconsumers as the customer contact disappears. This makes it even harder for major banks toconnect with new consumers. The purpose of this study is to illustrate how an increased digitalization of services affectscustomer loyalty to the banks in the Swedish market. The essay provides an overview ofselected marketing theories and relevant concepts regarding the bank's digitization and itsimpact on customer loyalty. Thereafter, the choice of method and the motivation behind theselection are presented. In the empirical part, survey data are presented with the accompanyinganalysis of the collected data. The study concludes with a summary discussion of results andafterwards the conclusion is presented.

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    Authors: Brandt, Juliana;

    In recent years, the train's punctuality, Sweden's ranking in the European Railway Performance Index and the train industry's customer satisfaction have decreased. The largest and most influential players in the train industry are Trafikverket and SJ AB, which are two state-owned organizations. The low customer satisfaction in the train industry is based on SJ AB’s failure to deliver the latest traffic information in case of delay. Since Trafikverket manages the majority of the railway network and SJ AB is Sweden's largest train operator, there is a high degree of mutual dependence between them in order for each organization to be able to conduct its business. At present, there is a clear division of responsibility between these actors regarding how and where the traffic information is distributed. Where the Trafikverket is responsible for conveying all information on its website and on the signs while SJ AB is responsible for conveying information on its website and in its application, as well as via textmessage and mail communication. The processes for communication between the actors regarding delays, track changes and other changes in the journey are done manually with digital tools as support. Today, several uncertainties are experienced in these processes, based on the fact that traffic control at SJ AB currently does not receive any confirmation from Trafikverket if any changes have been made. Due to these factors, this study will investigate the flow of information between SJ traffic control and the Trafikverket’s train services. Therefore, the purpose of this thesis was to identify existing communications, more specifically information flows of traffic data, between the organizations and their passengers, along with identifying possible improvements in the information flows through digitization. The thesis also explores the change opportunities for a department with many manual processes. The study was conducted with a multi-method structure consisting of a literature study, observation study, questionnaire study, interview study and benchmarking. During the observation, questionnaire and interview study, the focus was on employees at SJ traffic control and other relevant departments at SJ AB and the benchmarking was conducted through external interviews. This led to the identification of the main reasons of mismanagement of traffic information and best practices. This was later analyzed with the help of collected theory, which then led to discussion, conclusion and recommendations to SJ AB. It’s obvious that traffic information has low status within SJ AB as well as the interorganizational alliance. This has hampered the development of internal processes related to managing traffic information and therefore the processes lack standardized procedures and structured routines. The main reasons of mismanagement of traffic information depend on the human factor and specific individuals. This is based on the fact that it was clear that both traffic controls perceived the received traffic information difficult to interpret and unstructured, this depending on who sent the information. This due to the fact that the individuals use varying expressions and internal technical language. To be able to improve and in the future automate the information flows between the actors a standardized working procedure with associated technical language is required in the industry. To establish a technical language, the status of the traffic information must be increased within the organizations and a dictionary for which expressions should be used, where all used expressions are listed and defined. Additionally, a clearer goal of the alliance is required.

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    Authors: Blänning, Erik; Ivarsson, Caroline;

    When natural disasters such as earthquakes happen, there is a need for an efficient method to support humanitarian aid organizations in the decision making process. One such decision is placement of Foreign Field Hospitals to assist with medical help.To support such a decision lots of different information and data needs to be gathered and combined. The main objectives of this thesis are to collect existing data published shortly after the earthquake in Haiti 2010 as well as data published up to two months after the earthquake. The data is then to be evaluated according to adequacy for analysis and the result of the analysis to be compared to the actual placements of the field hospitals after the 2010 earthquake.The method used in this analysis is Multi Criteria Evaluation (MCE). Data regarding population, elevation, roads, land use, damage, climate, water, health facility locations and airport location are collected and weighted relative with the Analytic Hierarchy Process (AHP) with weights retrieved from a questionnaire sent out to Non-Governmental Organizations (NGOs) and countries involved in the disaster relief. The result obtained from the MCE is a final suitability map depicting areas that are suitable according to the different factors.The data availability for the thesis project is an issue, due to lack of data published shortly after the earthquake. Some of the data used in the analysis do not have the sufficient detail level. Still, an analysis can be performed where suitable areas are obtained.The suitable locations found in the analysis agree well in most cases with where the actual FFHs are placed, however a few locations are not in proximity to where the suitable areas lie. A few of the locations were located in areas exposed to frequently floods. Even though the data availability and quality leaves things to desire, the analysis method shows promising results for future research. The approach could help aggregating information from different sources and provide support in pre-dispatch organization, already having a set of suitable locations to arrive to.

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    Authors: Grünwald, Norbert;

    Mixed Reality is the combination of the real world with a virtual one. In robotics thisopens many opportunities to improve the existing ways of development and testing. Thetools that Mixed Reality gives us, can speed up the development process and increasesafety during the testing stages. They can make prototyping faster and cheaper, and canboost the development and debugging process thanks to visualization and new opportunitiesfor automated testing.In this thesis the steps to build a working prototype demonstrator of a Mixed Realitysystem are covered. From selecting the required components, over integrating them intofunctional subsystems, to building a fully working demonstration system.The demonstrator uses optical tracking to gather information about the real world environment.It incorporates this data into a virtual representation of the world. This allowsthe simulation to let virtual and physical objects interact with each other. The results ofthe simulation are then visualized back into the real world.The presented system has been implemented and successfully tested at the HalmstadUniversity.

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    Authors: Zvolánková, Eliška;

    The aim of this paper is to explain the concept of global journalism and to describe its presence in the Czech Republic. The development of journalism in the last years, which is connected to globalisation and digitalisation of media, and various global journalism theo-ries are introduced first to give the theoretical background. Then Peter Berglez's theory of global journalism is accepted as the main one for this work and it is described into greater details, including strong and weak points, criticism, problems and challenges. That is the core of the theoretical part of this work. The history and media of the Czech Republic are shortly addressed before the actual research. That is done with the help of mixed methods – quantitative surveys and content analyses and qualitative interviews – to answer four research questions: the awareness about the existence of global journalism, opinions about it, the influence of education and the presence of global journalism in Czech media.

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    Authors: Ahlmer, Anna-Klara;

    The expected increase in precipitation and temperature in Scandinavia, and especially short-time heavy precipitation, will increase the frequency of flooding. Urban areas are the most vulnerable, and specifically, the road infrastructure. The accumulation of large volumes of water and sediments on road-stream intersections gets severe consequences for the road drainage structures. The need for a tool to identify characteristics that impacts the occurrence of flooding, and to predict future event is thus essential. This study integrates the spatial and temporal soil moisture properties into the research about flood prediction methods. Soil moisture data is derived from remote sensing techniques, with focus on the soil moisture specific satellites ASCAT and SMOS. Furthermore, several physical catchments descriptors (PCDs) are used to identify catchment characteristics that are prone to flooding and an inventory of current road drainage facilities are conducted. Finally, the index of sediment connectivity (IC) by Cavalli, Trevisani, Comiti, and Marchi (2013) is implemented to assess the flow of water and sediment within the catchment. A case study of two areas in Sweden, Västra Götaland and Värmland, that was affected by severe flooding in August 2014 are included. The results show that the method with using soil moisture satellite data is promising for the inclusion of soil moisture data into estimations of flooding and the index of sediment connectivity. De förväntade ökningarna i nederbörd och temperatur i Skandinavien, och speciellt extrem korttidsnederbörd, kommer att öka frekvensen av översvämningar. Urbana områden är de mest sårbara, och speciellt väginfrastrukturen. Ackumuleringen av stora volymer av vatten och sediment där väg och vattendrag möts leder till allvarliga konsekvenser för dräneringskonstruktionerna. Behovet av ett verktyg för att identifiera egenskaper som påverkar förekomsten av översvämningar, och för att förutsäga framtida händelser är väsentligt. Studien integrerar markfuktighet både rumsligt och tidsmässigt i forskningen om metoder för översvämningsrisker. Markfuktighetsdata är inkluderat från fjärranalysteknik, med fokus på de specifika satelliterna för markfuktighet, ASCAT och SMOS. Vidare är flertalet faktorer (PCDs) inkluderade för att identifiera egenskaper i avrinningsområden som är benägna till översvämning samt en inventering av nuvarande vägdräneringskonstruktioner. Slutligen är ett index med sediment connectivity (Cavalli et al., 2013) implementerat för att se flödet av vatten och sediment inom avrinningsområdet. En fallstudie med två områden i Sverige, Västra Götaland och Värmland, som drabbades av allvarliga översvämningar i augusti 2014 är inkluderat. Resultaten visar att metoden att använda markfuktighet från satellitdata är lovande för inkludering i uppskattningar av översvämningsrisk och i indexet med sediment connectivity.

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    Publikationer från KTH
    Bachelor thesis . 2017
    ResearchGate Data
    Thesis . 2017
    Data sources: Datacite
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      Publikationer från KTH
      Bachelor thesis . 2017
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      Thesis . 2017
      Data sources: Datacite
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    Authors: Wolak, Peter; Johansson, Mattias;

    With the rapid development of computers and their proven usability in manufacturing environments, simulation-based optimisation has become a recognised tool for proposing near-optimal results related to manufacturing system design and improvement. As a world-leading manufacturer within their field, Volvo GTO in Skövde, Sweden is constantly seeking internal development and has in recent years discovered the possibilities provided by flow simulation. The main aim of this thesis is to provide an optimal buffer size of a new post-assembly and packaging line (Konpack) yet to be constructed. A by-product of the flow simulation optimisation project in form of a flow simulation process evaluation was also requested. The simulation project started with a pre-study including the development of the frame of reference and an analysis of the literature focused on merging Lean philosophy with simulation-based optimisation. The simulation model was built based on both historical and estimated data. The optimisation results showed different buffer size alternatives depending on the throughput to be achieved, these are discussed, and near-optimal solutions presented for decision-making. Additionally, four experiments were carried out, both contributing to the model’s credibility as well as providing new and valuable insight to the stakeholders. The conclusions drawn from the optimisation and experiments indicate that Konpack will be able to meet the established throughput goals, provided that the suggested near-optimal solutions are considered. The experiments also unanimously point to the fact that Konpack has a built-in overcapacity, utilizable by optimising certain suggested input parameters. Additionally, an evaluation of the completeness of the standard simulation process employed by Volvo GTO is provided, concluding that no major changes are needed. Nevertheless, there is always room for improvement. Hence, future work regarding the flow simulation process at Volvo GTO is proposed.

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    Authors: Krantz, Marthin; Andersson, Rikard;

    Force control is introduced to robots to solve the problem in machining applications due to the fact that the robot compliance might cause deviation between actual and desired robot path. Also large tolerances in the casting process as well as positioning errors from the clamping create deviations for which the force control technology can adept. Force control has also shown successful in automatic learning of paths along non linear surfaces. This study investigates the possibility of introducing robots equipped with force control at Volvo Aero Corporation in order to robotize polishing and deburring processes. These are today performed by manual labor. This study investigates more specifically the ABB Force Control machining application package. The polishing process has shown to be very complex and today’s version of the ABB force control package cannot give sufficiently robust results to be recommended for implementation. The major issue is the non-existing compliance of tool orientation needed to adapt to casting and positioning deviations due to varying work piece dimensions. The deburring process has however shown to be easier to handle, and a robot cell and methodology is proposed in this report.

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    Authors: Christian, Thomas; Marechal, Dennis;