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  • 1.
    Abazi, Agon
    et al.
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Institutionen för informationsteknologi och medier.
    Lindström, Robin
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Institutionen för informationsteknologi och medier.
    Effektiviseringsmöjligheter på Tunadals sågverk: med innesäljarprocessen i fokus2012Independent thesis Basic level (degree of Bachelor), 10 poäng / 15 hpOppgave
    Abstract [en]

    The investigation was initiated because of the high workload of the sellers and, additionally, because the Tunadal sawmill has received low ratings in customer surveys. Thus,  two main approaches are adopted here,  the first being to investigate which of the three methods  of working, namely, market divided flow organization, function organizationand flow organization with collaboration, proves to be the most beneficial. The second is to investigate whether there is an available method to ease the daily work. A literature review has been made in order to determine more efficient ways for the sellers to work in the Tunadal sawmill. During the investigation, an in-depth investigation into the total quality management using a balanced scorecard as a management tool was conducted. To identify the current problems, interviews and workshops were conducted with the department members. A customer survey was sent to the customers in order to obtain some indication in relation to their opinions. The results showed that there are many unnecessary working operations such as control, duplication of work and problem solving. Communication between the various departments and individuals proved to sometimes be poor.  A major reason for the sellers’ problems regarding workload was due to the unavailability of goods on the discharge date. Many benefits are associated with the collaborative flow organization as this increases the holistic view and can assist in relation to communication. The function based method of working would, however, lead to greater isolation of the functions in the business. Very little work regarding identification of problems that occur in the processes exists and focus on working with improvements is limited. It would be advantageous to work with total quality management using the balanced scorecard as a management tool in the flow organization based on cooperation as this also promotes the holistic approach.

    Keywords:Efficiency improvement, total quality management, balanced

  • 2.
    Abdallah, Ali
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Tekniska sektionen, Institutionen för teknikvetenskaper, Industriell teknik.
    The perception of Nuclear powerin Sweden: How engineering students view it2017Independent thesis Advanced level (degree of Master (One Year)), 10 poäng / 15 hpOppgave
    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.

  • 3.
    Abdul Malek, Nurul Aida
    et al.
    Universiti Tun Hussein Onn Malaysia (UTHM), Malaysia / Department of Production, University of Vaasa, Finland.
    Shahzad, Khuram
    Department of Production, University of Vaasa, Finland.
    Takala, Josu
    Department of Production, University of Vaasa, Finland.
    Bojnec, Stefan
    Faculty of Management, University of Primorska, Slovenia.
    Papler, Drago
    Faculty of Management, University of Primorska, Slovenia.
    Liu, Yang
    Department of Production, University of Vaasa, Finland.
    Analyzing Sustainable Competitive Advantage: Strategically Managing Resource Allocations to Achieve Operational Competitiveness2015Inngår i: Management and Production Engineering Review, ISSN 2080-8208, E-ISSN 2082-1344, Vol. 6, nr 4, s. 70-86Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    In today’s dynamic business environment, a key challenge for all companies is to make adaptive adjustments to their manufacturing strategy. This study demonstrates the competitive priorities of manufacturing strategy in hydro-power case company to evaluate the level of sustainable competitive advantage and also to further analyze how business strategies are aligned with manufacturing strategies. This research is based on new holistic analytical evaluation of manufacturing strategy index, sense and respond, and sustainable competitive advantage models. These models help to describe, evaluate, and optimize resource allocation to meet the performance requirements in dynamic decision making. Furthermore, these models evaluate operational competitiveness for manufacturing strategies according to the multi-criteria priority. The results show that the adjustments of competitive priorities in manufacturing strategies by implementing the proposed holistic analytical models are helpful in strategically managing business operations. The discussion derives the most critical attributes in business operations while alignment of resource allocation with competitive priorities help to strategically focus those attributes. In conclusion, we argue that resource allocation and manufacturing strategies have become the most important capabilities in a business environment where companies focus to get a sustainable competitive advantage.

  • 4.
    Abdullah, M Ailieen
    et al.
    Royal Institute of Technology, Stockholm.
    Rönnbäck, Anna Öhrwall
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell marknadsföring och industriell ekonomi.
    Sandström, Gunilla Ölundh
    Royal Institute of Technology.
    Building Networks for Delivering Integrated Product-Service Offerings (IPSOs)2010Inngår i: Industrial product-service systems -IPS²: proceedings of the 2nd CIRP IPS² Conference [2010, Linköping, 14-15 April], Linköping, 2010Konferansepaper (Fagfellevurdert)
    Abstract [en]

    The paper describes the effect of forming business networks and collaborations for the purpose of developing an Integrated Product-Service Offering (IPSO) using the Product/Service Systems (PSS). The research method is an in-depth case study of a joint venture formed by four companies developing a new technology for chemical extraction from water sludge waste within the pulp and paper industry.Combining literature from PSS, network theories and collaborative product development, this paper puts forward the benefits for SMEs to collaborate in business networks and produce IPSOs when introducing a new technology in an emerging market. The case study shows that working towards the new market would not have been possible if each party acted individually or maintained their traditional buyer-supplieroperator roles, and that IPSOs can reduce the business risk.

  • 5.
    Abdulridha, Aya
    et al.
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Avdelningen för informations- och kommunikationssystem.
    Karlberg, Louice
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Avdelningen för informations- och kommunikationssystem.
    Klassificering och lokalisering: En studie om klassificering och lokalisering av produkter hos Delta Terminal AB2016Independent thesis Basic level (professional degree), 10 poäng / 15 hpOppgave
    Abstract [sv]

    Delta Terminal AB hyr idag ett lager. Då utgifterna för lagret är högre än inkomsterna vill Delta Terminal AB flytta sitt nuvarande lager till en egenägd lokal på området. Då det nuvarande lagret är på cirka 7900 m2 och den tilltänkta lokalen är 6400 m2 är det viktigt att lagerytorna fylls så mycket som möjligt utan att skada produkterna. För att minska körsträckorna i lagret placeras produkterna utefter en klassificering där uttagsfrekvensen är den viktigaste faktorn. Klassificeringen har gjorts genom en dubbel ABC-analys. För att kontrollera om produkterna får plats i lagret gjordes beräkningar på fyllnadsgraden samt lokalisering och placering av produkterna. Informationen är hämtad genom en litteraturöversikt, tidigare studier, vetenskapliga artiklar, diskussioner med personal hos Delta Terminal AB samt data från respektive kund som har produkter i lagret. Studien visar att produkterna Delta Terminal AB har i lager inte kommer att få plats i den tilltänkta lagerlokalen och att Delta Terminal AB behöver minst 48 m2 för att kunna lagra överblivna produkter.

  • 6.
    Abella, Tricia Jennifer
    KTH, Skolan för industriell teknik och management (ITM), Industriell ekonomi och organisation (Inst.).
    The Creative Approach to Vanguard Projects2011Independent thesis Advanced level (degree of Master (One Year)), 20 poäng / 30 hpOppgave
    Abstract [en]

    A vanguard project is the firm’s entrepreneurial vehicle for exploring opportunities, creating new products, services or markets. This type of projects requires flexibility and innovation to thrive. In this regard, a creative approach to project management is proposed for the successful execution of such projects. This creative approach is summarized in a framework that consists of two main components – flexible planning and creative climate.

    The Central Services project, a vanguard in telecommunications, was used to benchmark the creative project management framework to the current project management methodology of the IT department of TIWS. Results show that there is a gap between the framework and the status quo. Moreover, the Central Services project is not efficiently and effectively managed, therefore, resulting to project delays which consequentially lead to negative company revenues. This reality strengthens the proposition that vanguard projects should be managed differently; hence, the birth of creative project management.

  • 7.
    Abeurathna, Nuwan
    Högskolan i Gävle, Akademin för teknik och miljö, Avdelningen för bygg- energi- och miljöteknik. KTH.
    Design and Construction of a Supervisory Control and Data Acquisition System for full scale combustion test facility2013Independent thesis Advanced level (degree of Master (Two Years)), 20 poäng / 30 hpOppgave
    Abstract [en]

    One of major concerns in gas turbine industry is to reduce emissions.  Tow kind of approaches could be identified in the industry to reduce emissions, namely Primary Emission Reduction approach and Secondary Emission Reduction approach. The primary approach concerns emission prevention in combustion, while secondary approach is all about emission cleanup before releasing to the atmosphere.

    Combustion flame temperature highly influences on emissions specially NOx formation.  NOx emission is lower when the combustor operates close to lean flammability limit. Incorporating catalyst to combustor is one of methods to extend flammability limit.  Heat and Power Division at KTH-Royal Institute of Technology in Sweden has developed a test facility to test performances of catalyst in combustion.

    The combustion test facility available at Heat & Power Davison at KTH, consists of high pressure air compressor and air flow control system, air preheating unit and control system, fuel flow control system, combustor unit, and exhaust gas analyzer system. But lack of proper user interface to control and monitor the operation of the test facility through a computer work station was a major concern from experimenters.

    The purpose of the thesis work is to design and construction of supervisory control and data acquisition system for the full scale catalytic combustion test facility.  Labview 2012 is used as the main platform for implementing data acquisition and control system for the test facility. Thermocouples, pressure transducer signals, air flow meter signal are connected to Keithley 2701 data acquisition system and then connected to the computer. Fuel flow controllers are directly connected to the computer via serial port. Air flow control actuator signal is given through ADAM digital to analogue converter.

    Developed GUI is more convenient for users in terms of easy control of air flow, fuel flow and gas sampling probe systems, and monitoring of temperature, pressure measurements and exhaust gas species systems. And also GUI provides web interface to select correct conversion factor, and also to view live data recording. The developed GUI can be accessed through online to monitor the operation. 

  • 8.
    Abid, Ali
    et al.
    Mälardalens högskola, Institutionen för innovation, design och produktutveckling. Mälardalens högskola, Akademin för innovation, design och teknik.
    Roback, Joel
    Mälardalens högskola, Institutionen för innovation, design och produktutveckling.
    Produktutveckling för Cate & Nelson Design: Framtagning av möbel2008Independent thesis Advanced level (degree of Master (Two Years)), 20 poäng / 30 hpOppgave
    Abstract [sv]

    Denna rapport behandlar examensarbete utfört för industridesignföretaget Cate & Nelson Design. Företaget ligger i Eskilstuna och jobbar i huvudsakligen med möbeldesign och inredningsprodukter. Projektgruppensuppgift har varit att ta fram en ny möbel för företaget och arbetet har omfattat utveckling av hela produkten från idé till prototyp.

  • 9.
    Abo Al Ahad, George
    et al.
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Produktionsekonomi.
    Salami, Abbas
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Produktionsekonomi.
    Machine Learning for Market Prediction: Soft Margin Classifiers for Predicting the Sign of Return on Financial Assets2018Independent thesis Advanced level (degree of Master (Two Years)), 20 poäng / 30 hpOppgave
    Abstract [en]

    Forecasting procedures have found applications in a wide variety of areas within finance and have further shown to be one of the most challenging areas of finance. Having an immense variety of economic data, stakeholders aim to understand the current and future state of the market. Since it is hard for a human to make sense out of large amounts of data, different modeling techniques have been applied to extract useful information from financial databases, where machine learning techniques are among the most recent modeling techniques. Binary classifiers such as Support Vector Machines (SVMs) have to some extent been used for this purpose where extensions of the algorithm have been developed with increased prediction performance as the main goal. The objective of this study has been to develop a process for improving the performance when predicting the sign of return of financial time series with soft margin classifiers.

    An analysis regarding the algorithms is presented in this study followed by a description of the methodology that has been utilized. The developed process containing some of the presented soft margin classifiers, and other aspects of kernel methods such as Multiple Kernel Learning have shown pleasant results over the long term, in which the capability of capturing different market conditions have been shown to improve with the incorporation of different models and kernels, instead of only a single one. However, the results are mostly congruent with earlier studies in this field. Furthermore, two research questions have been answered where the complexity regarding the kernel functions that are used by the SVM have been studied and the robustness of the process as a whole. Complexity refers to achieving more complex feature maps through combining kernels by either adding, multiplying or functionally transforming them. It is not concluded that an increased complexity leads to a consistent improvement, however, the combined kernel function is superior during some of the periods of the time series used in this thesis for the individual models. The robustness has been investigated for different signal-to-noise ratio where it has been observed that windows with previously poor performance are more exposed to noise impact.

  • 10.
    Abraham, Jonatan
    et al.
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Industriell ekologi.
    Strand, Anna
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Industriell ekologi.
    Reseavdrag: En analys av ett arbetsmarknadspolitiskt styrmedel ur ett hållbarhetsperspektiv2017Independent thesis Basic level (degree of Bachelor), 10 poäng / 15 hpOppgave
    Abstract [sv]

    För att öka rörligheten på arbetsmarknaden har man i Sverige haft möjlighet att göra skatteavdrag för kostnader som uppstår kring arbetspendling. Idag ifrågasätts det dock om syftet verkligen uppfylls, samt om det är samhällsekonomiskt lönsamt att behålla avdraget. Den ökande bilismen som uppstår som effekt av subventioneringen gör även det hela till en miljöfråga.

    Syftet med följande kandidatexamensuppsats är ge läsaren och oss författare ökad kunskap kring reseavdraget, samt ge underlag för fortsatt utveckling av styrmedlet. Arbetet är består av fyra större delar:

    • En litteraturstudie med bakgrundsfakta kring reseavdraget och dess historia, tidigare forskning och den politiska debatten idag.
    • En enkätundersökning där allmänhetens åsikter kring avdraget utforskas.
    • En diskussion av möjliga justeringar av reseavdragets olika parametrar förs, där det (enligt vår mening) mest optimala förändringsförslaget tas fram.
    • En styrmedelsanalys av 3 olika sorters reseavdrag; det nuvarande, förändringsförslaget som togs fram, samt ett borttaget.

    Av resultaten kunde slutsatsen dras att ett förändrat reseavdrag skulle vara märkbart mer samhällsekonomiskt lönsamt samt miljövänligt, gentemot det nuvarande. Ett borttaget reseavdrag skulle dock vara det mest optimala. Dessutom visade enkätundersökningen att allmänheten mestadels är positiv till reseavdraget, men att mångas åsikter kan skiftas snabbt när man presenterar fakta.

  • 11.
    Abrahamsson, Andreas
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Matematisk-datavetenskapliga sektionen, Institutionen för informationsteknologi, Avdelningen för beräkningsvetenskap.
    Using Function as a Service for Dynamic Application Scaling in the Cloud2018Independent thesis Advanced level (professional degree), 20 poäng / 30 hpOppgave
    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. 

  • 12.
    Abrahamsson, Anna-Carin
    KTH, Skolan för teknik och hälsa (STH).
    Den fysiska arbetsmiljön i förskolan: utveckling, användning och granskning av en riskbedömningsmodell2016Independent thesis Advanced level (degree of Master (One Year)), 10 poäng / 15 hpOppgave
    Abstract [sv]

    Arbetsmiljön i förskolan tenderar att bli allt mer krävande. Arbetsskadestatistiken visar också på en ökad förekomst av ohälsa bland anställda inom skola, vård och omsorg. Innan åtgärder görs för att förbättra arbetsmiljön behöver riskbedömning och handlingsplan göras. För att få med alla tänkbara komponenter behövs en heltäckande metod. Vid kartläggning av den fysiska arbetsmiljön i Hudiksvalls kommuns samtliga förskolor har en riskbedömningsmodell utvecklats och använts för att få en övergripande bild av riskområden inom förskolepersonalens arbetsmiljö.

    Syftet med detta arbete är att beskriva hur riskbedömningsmodellen utvecklats och använts med målet att den ska kunna användas i andra kommuner. Modellen har provats i Hudiksvall vid två tillfällen, år 2005 och år 2010. Resultat från kartläggningen 2010 presenteras här och en jämförelse med 2005 görs.

    Riskbedömningsmodellen bygger på enkät med öppna frågor till förskolepersonal kombinerad med observation och bedömning av ergonom och arbetsmiljöingenjör av 11 riskområden inom den fysiska arbetsmiljön på förskolan.

    Resultatet av kartläggningen ger en överskådlig bild av aktuella arbetsmiljörisker och har använts som underlag vid utveckling av förskolans verksamhet och möjliggjort rationella underhållsåtgärder för kommunens fastighetsavdelning. Resultatet har också kommunicerats till enskilda förskolor för att påvisa just deras riskområden. 

    Kombinationen av enkät och professionell bedömning av flera riskområden vid samma tillfälle har snabbt kunnat ringa in tänkbara orsaker till ohälsa bland personal inom förskolan. Att redovisa både positiva och negativa arbetsmiljöfaktorer har varit en fördel. Den tydliga redovisningen har underlättat när beslut om åtgärder ska fattas. Det finns ett fortsatt behov av att utveckla detta och andra instrument för arbetsmiljökartläggningar inom skola, vård och omsorg.

  • 13.
    Abrahamsson, Henrik
    et al.
    Högskolan i Halmstad, Sektionen för ekonomi och teknik (SET).
    Nilsson, Anders
    Högskolan i Halmstad, Sektionen för ekonomi och teknik (SET).
    Meetia: Framtiden för utbyte av digital information2010Independent thesis Basic level (university diploma), 15 poäng / 22,5 hpOppgave
    Abstract [sv]

    I dagens affärssamhälle är utbytet av vanliga visitkort i papper enormt. Det är utan tvekan det ledande sättet för människor som träffas första gången att utbyta information i en affärsrelation. Det finns brister gällande uppföljning och hantering av vanliga visitkort och projektgruppen började då fundera på alternativ till pappersvisitkorten.

    I dagens samhälle flyttas alltmer teknik till mobiltelefoner. En mobiltelefon kan idag användas till allt från att göra bankärenden till att läsa tidningen på nätet, vilket för 15 år sedan skulle låta helt orimligt. Det dyker dagligen upp nya mobilapplikationer som ska underlätta och effektivisera vardagen på något sätt och marknaden är enorm. På denna snabbt växande marknad har projektgruppen valt att ta fram ett koncept som de kallar Meetia.

    Meetia är i huvudsak en mobilapplikation framtagen för att trådlöst utbyta digitala visitkort och förenkla bokning av möten genom att synka användarnas kalendrar. Applikationen har även funktioner som låter användaren enkelt och snabbt skapa nya visitkort direkt i telefonen.

    Projektgruppen har även tagit fram en kompletterande hemsida till mobilapplikationen där användare har möjlighet att lagra och hantera de digitala visitkort som mottagits, för att sedan genom smarta sökfunktioner enkelt hitta de visitkort man söker.

    Meetia kommer vara ett optimalt verktyg för att skapa nya kontakter då hela vägen från första kontakt till möte eller lagring av visitkort enkelt sköts med konceptet Meetia. Meetia kommer framför allt inrikta sig mot mässor där visitkort är vanligt förekommande och mängder affärskontakter skapas. För att nå ut till de stora mässorna i Sverige kommer applikationen finnas med mässfunktioner.

  • 14.
    Abrahamsson, Lena
    et al.
    Luleå tekniska universitet, Institutionen för ekonomi, teknik och samhälle, Arbetsvetenskap.
    Frishammar, Johan
    Luleå tekniska universitet, Institutionen för ekonomi, teknik och samhälle, Innovation och Design.
    Project: Fuzzy front end - ledning och organisering av produkt- och processinnovation2010Annet (Annet (populærvitenskap, debatt, mm))
    Abstract [sv]

    Vinnova

  • 15.
    Abrahamsson, Lena
    et al.
    Luleå tekniska universitet, Institutionen för ekonomi, teknik och samhälle, Arbetsvetenskap.
    Fältholm, Ylva
    Luleå tekniska universitet, Institutionen för ekonomi, teknik och samhälle, Arbetsvetenskap.
    Wikberg-Nilsson, Åsa
    Luleå tekniska universitet, Institutionen för ekonomi, teknik och samhälle, Innovation och Design.
    Johansson, Stina
    Luleå tekniska universitet, Institutionen för ekonomi, teknik och samhälle, Arbetsvetenskap.
    Johansson, Jan
    Luleå tekniska universitet, Institutionen för ekonomi, teknik och samhälle, Arbetsvetenskap.
    Rask, Kjell
    Luleå tekniska universitet, Institutionen för ekonomi, teknik och samhälle, Arbetsvetenskap.
    Johansson, Bo
    Projekt: Framtidsfabriken - en konceptfabrik formad av kvinnor2010Annet (Annet (populærvitenskap, debatt, mm))
    Abstract [sv]

    Ett forskningsprojekt som bland annat innebar arbete tillsammans med ett designteam bestående av kvinnor (yrkesaktiva inom industrin) för att utforma modeller för framtidens industriarbete – både organisation och arbetsplatser. Projektet pågick 2008-2011 med finansiering från AFA (2,7 milj. kr), FAS (2,4 milj. kr) samt EUs regionala utvecklingsfond. I projektet medverkade även Jan Johansson, Bo Johansson och Kjell Rask. Doktorander: Åsa Wikberg-Nilsson (Industriell design) och Stina Johansson (IPM).

  • 16.
    Abrahamsson, Lena
    et al.
    Luleå tekniska universitet, Institutionen för ekonomi, teknik och samhälle, Arbetsvetenskap.
    Westerberg, Mats
    Luleå tekniska universitet, Institutionen för ekonomi, teknik och samhälle, Innovation och Design.
    Forsberg, Lena
    Luleå tekniska universitet, Extern, LTU Business AB.
    Projekt: Hästkrafter för entreprenörskap2010Annet (Annet (populærvitenskap, debatt, mm))
    Abstract [sv]

    En studie av företagande, ledarskap och genus i hästbranschen. Projektet pågick 2009-2011 med finansiering från Stiftelsen Lantbruksforskning (2,5 milj kr). I projektet medverkade Lena Abrahamsson, Mats Westerberg och doktorand Lena Forsberg.

  • 17.
    Abramsson, Jonatan
    Linköpings universitet, Institutionen för fysik, kemi och biologi.
    First-principle of Sc / Cr multilayers for x-ray mirrors applications2008Independent thesis Basic level (professional degree), 20 poäng / 30 hpOppgave
    Abstract [en]

    In order to produce x-ray mirrors the Thin Film Physics group at IFM grows Cr/Sc multilayers, with a typical thickness of the individual layers in the range 5-20 Å, and with as many periods as possible (a few hundred).

    The quality of the multilayer interfaces is crucial for their performance as mirrors. For thick layers poly-crystalline multilayers form with an interface quality that is too poor for the use as x-ray mirrors. For thinner layers, however, amorphous layers are formed with a much better quality of the interface.

    The goal of this project was to understand the formation of amorphous multilayers. Unfortunately it is impossible with the present day's theoretical tools to determine the structure of amorph interfaces. It is also impossible to calculate the interface structure for elements with large mismatch in size.

    So we have to construct interface models that are both simple and based on physical arguments.

  • 18.
    Abrehdary, Majid
    et al.
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Samhällsplanering och miljö, Geodesi och satellitpositionering.
    Sjöberg, Lars E.
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Samhällsplanering och miljö, Geodesi och satellitpositionering.
    Bagherbandi, Mohammad
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Samhällsplanering och miljö, Geodesi och satellitpositionering.
    Modelling Moho depth in ocean areas based on satellite altimetry using Vening Meinesz–Moritz’ method2016Inngår i: Acta Geodaetica et Geophysica Hungarica, ISSN 1217-8977, E-ISSN 1587-1037, Vol. 51, nr 2, s. 137-149Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    An experiment for estimating Moho depth is carried out based on satellite altimetryand topographic information using the Vening Meinesz–Moritz gravimetric isostatichypothesis. In order to investigate the possibility and quality of satellite altimetry in Mohodetermination, the DNSC08GRA global marine gravity field model and the DTM2006 globaltopography model are used to obtain a global Moho depth model over the oceans with aresolution of 1 x 1 degree. The numerical results show that the estimated Bouguer gravity disturbancevaries from 86 to 767 mGal, with a global average of 747 mGal, and the estimatedMoho depth varies from 3 to 39 km with a global average of 19 km. Comparing the Bouguergravity disturbance estimated from satellite altimetry and that derived by the gravimetricsatellite-only model GOGRA04S shows that the two models agree to 13 mGal in root meansquare (RMS). Similarly, the estimated Moho depths from satellite altimetry andGOGRA04S agree to 0.69 km in RMS. It is also concluded that possible mean dynamictopography in the marine gravity model does not significantly affect the Moho determination.

  • 19.
    Abuzohri, Ahmed
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Tekniska sektionen, Institutionen för teknikvetenskaper, Industriell teknik.
    Business Development: Market research & feasibility study of a PV-wind hybrid system for commercial use2018Independent thesis Advanced level (degree of Master (One Year)), 10 poäng / 15 hpOppgave
    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.

  • 20.
    Acevedo, Carlos
    Blekinge Tekniska Högskola, Fakulteten för datavetenskaper, Institutionen för teknik och estetik.
    Developing Inclusive Innovation Processes and Co-Evolutionary University-Society Approaches in Bolivia2018Doktoravhandling, med artikler (Annet vitenskapelig)
    Abstract [en]

    This study is part of a worldwide debate on inclusive innovation systems in developing

    countries and particularly on the co-evolutionary processes taking place, seen from the

    perspective of a public university. The increasing literature that discusses how innovation

    systems and development can foster more inclusive and sustainable societies has

    inspired this thesis work. Thus, the main problem handled in the research concerns the

    question how socially sensitive research practices and policies at a public university in

    Bolivia can be stimulated within emerging innovation system dynamics. In that vein,

    empirical knowledge is developed at the Universidad Mayor de San SimoÅLn (UMSS),

    Cochabamba as a contribution to experience-based learning in the field. Analysis are

    nourished by a dialogue with the work of prominent Latin American scholars and

    practitioners around the idea of a developmental university and the democratization

    of knowledge. The reader will be able to recognize a recursive transit between theory

    and practice, where a number of relevant concepts are contextualized and connected

    in order to enable keys of critical interpretation and paths of practices amplification

    for social inclusion purposes established. The study shows how, based on a previous

    experience, new competences and capacities for the Technology Transfer Unit (UTT)

    at UMSS were produced, in this case transforming itself into a University Innovation

    Centre. Main lessons gained in that experience came from two pilot cluster development

    (food and leather sectors) and a multidisciplinary researchers network (UMSS

    Innovation Team) where insights found can improve future collaborative relations between

    university and society for inclusive innovation processes within the Bolivian

    context.

  • 21. Acevedo Peña, Carlos Gonzalo
    Developing Inclusive Innovation Processes and Co-Evolutionary Approaches in Bolivia2015Licentiatavhandling, med artikler (Annet vitenskapelig)
    Abstract [en]

    The concept of National Innovation Systems (NIS) has been widely adopted in developing countries, particularly in Latin American countries, for the last two decades. The concept is used mainly as an ex-ante framework to organize and increase the dynamics of those institutions linked to science, technology and innovation, for catching-up processes of development. In the particular case of Bolivia, and after several decades of social and economic crisis, the promise of a national innovation system reconciles a framework for collaboration between the university, the government and the socio-productive sectors. Dynamics of collaboration generated within NIS can be a useful tool for the pursuit of inclusive development ambitions.

     

    This thesis is focused on inclusive innovation processes and the generation of co-evolutionary processes between university, government and socio-productive sectors. This is the result of 8 years of participatory action research influenced by Mode 2 knowledge-production and Technoscientific approaches.

     

    The study explores the policy paths the Bolivian government has followed in the last three decades in order to organize science, technology and innovation. It reveals that Bolivia has an emerging national innovation system, where its demand-pulled innovation model presents an inclusive approach. Innovation policy efforts in Bolivia are led by the Vice-Ministry of Science and Technology (VCyT). Moreover, NIS involves relational and collaborative approaches between institutions, which imply structural and organizational challenges, particularly for public universities, as they concentrate most of the research capabilities in the country. These universities are challenged to participate in NIS within contexts of weak demanding sectors. 

     

    This research focuses on the early empirical approaches and transformations at Universidad Mayor de San Simón (UMSS) in Cochabamba. The aim to strengthen internal innovation capabilities of the university and enhance the relevance of research activities in society by supporting socio-economic development in the framework of innovation systems is led by the Technology Transfer Unit (UTT) at UMSS. UTT has become a recognized innovation facilitator unit, inside and outside the university, by proposing pro-active initiatives to support emerging innovation systems. Because of its complexity, the study focuses particularly on cluster development promoted by UTT. Open clusters are based on linking mechanisms between the university research capabilities, the socio-productive actors and government. Cluster development has shown to be a practical mechanism for the university to meet the demanding sector (government and socio-productive actors) and to develop trust-based inclusive innovation processes. The experiences from cluster activities have inspired the development of new research policies at UMSS, with a strong orientation to foster research activities towards an increased focus on socio-economic development. The experiences gained at UMSS are discussed and presented as a “developmental university” approach.

     

    Inclusive innovation processes with co-evolutionary approaches seem to constitute an alternative path supporting achievement of inclusive development ambitions in Bolivia. 

  • 22.
    Acheampong, Faustina
    et al.
    Högskolan i Jönköping, Internationella Handelshögskolan, IHH, Informatik.
    Vimarlund, Vivian
    Högskolan i Jönköping, Internationella Handelshögskolan, IHH, Informatik.
    Handheld Electrocardiogram: Does ICT Contribute to Innovation in Healthcare Delivery?2012Inngår i: Proceedings of the IADIS international conference E-health 2012: part of the IADIS multi conference on Computer Science  and Information Systems / [ed] Mário Macedo, IADIS Press, 2012, s. 77-84Konferansepaper (Fagfellevurdert)
  • 23.
    Acheampong, Josephine
    KTH, Skolan för industriell teknik och management (ITM), Industriell ekonomi och organisation (Inst.), Entreprenörskap och Innovation.
    Green Financing: Financing Circular Economy Companies: Case Studies of Ragn-Sellsföretagen AB and Inrego AB2016Independent thesis Advanced level (degree of Master (One Year)), 10 poäng / 15 hpOppgave
    Abstract [en]

    The circular economy (CE) has been identified as a catalyst in sustainable development and economic growth that has the potential to move society from the traditional linear model of resource consumption in the form of take-make-waste to an innovative circular model in the form of reduce-reuse-recycle.

    Transitioning from the linear economy to the CE requires changes in four areas: material and product design, business models, global reverse networks and enabling business environments. This study considers the financing needs of CE companies as a result of business model changes.

    Through the case studies of Ragn-Sellsföretagen AB and Inrego AB, analysed with secondary data from ING Bank and primary data collected through semi-structured interviews with the case companies, this research sheds more light on the financing needs of circular economy companies and how they are financed.

    Findings from this research suggest that the financing needs of circular economy companies depend on the value proposition of the company. In accordance with the pecking order of capital structure, all financing needs of the companies studied are financed from internal sources, particularly retained earnings before external debt financing is accessed. Findings indicate the willingness of banks to finance circular economy companies.

    The results of this research suggest that the circular economy companies studied do not need financial support from the government or its agencies to succeed even though favourable laws are welcomed. They report that their long-term success depends on their ability to remain innovative in their business models, aligning with Schumpeter’s creative destruction model.

  • 24.
    Ackeby, Susanne
    et al.
    STRI.
    Bollen, Math
    Luleå tekniska universitet.
    Munkhammar, Joakim
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Tekniska sektionen, Institutionen för teknikvetenskaper, Fasta tillståndets fysik.
    Prosumer with demand-response:Distribution network impact and mitigation2013Rapport (Annet vitenskapelig)
    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.

  • 25.
    Adamson, Göran
    et al.
    Högskolan i Skövde, Institutionen för ingenjörsvetenskap. Högskolan i Skövde, Forskningscentrum för Virtuella system.
    Wang, Lihui
    Högskolan i Skövde, Institutionen för ingenjörsvetenskap. Högskolan i Skövde, Forskningscentrum för Virtuella system. Department of Production Engineering, KTH Royal Institute of Technology, Stockholm, Sweden.
    Holm, Magnus
    Högskolan i Skövde, Institutionen för ingenjörsvetenskap. Högskolan i Skövde, Forskningscentrum för Virtuella system.
    Moore, Philip
    Academy for Innovation & Research, Falmouth University, Cornwall, United Kingdom.
    Cloud Manufacturing: A Critical Review of Recent Development and Future Trends2017Inngår i: International journal of computer integrated manufacturing (Print), ISSN 0951-192X, E-ISSN 1362-3052, Vol. 30, nr 4-5, s. 347-380Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    There is an on-going paradigm shift in manufacturing, in which modern manufacturing industry is changing towards global manufacturing networks and supply chains. This will lead to the flexible usage of different globally distributed, scalable and sustainable, service-oriented manufacturing systems and resources. Combining recently emerged technologies, such as Internet of Things, Cloud Computing, Semantic Web, service-oriented technologies, virtualisation and advanced high-performance computing technologies, with advanced manufacturing models and information technologies, Cloud Manufacturing is a new manufacturing paradigm built on resource sharing, supporting and driving this change.

    It is envisioned that companies in all sectors of manufacturing will be able to package their resources and know-hows in the Cloud, making them conveniently available for others through pay-as-you-go, which is also timely and economically attractive. Resources, e.g. manufacturing software tools, applications, knowledge and fabrication capabilities and equipment, will then be made accessible to presumptive consumers on a worldwide basis.

    Cloud Manufacturing has been in focus for a great deal of research interest and suggested applications during recent years, by both industrial and academic communities. After surveying a vast array of available publications, this paper presents an up-to-date literature review together with identified outstanding research issues, and future trends and directions within Cloud Manufacturing.

  • 26.
    Adappan Ramu, Sasikala
    et al.
    Linnéuniversitetet, Fakulteten för teknik (FTK), Institutionen för informatik (IK).
    Narasingam Kuppusamy, Venkatesh
    Linnéuniversitetet, Fakulteten för teknik (FTK), Institutionen för informatik (IK).
    Exploring knowledge sharing in the Requirement Engineering phase of globally distributed Information Systems development: Perceived challenges and suggestions for improvement2016Independent thesis Advanced level (degree of Master (One Year)), 10 poäng / 15 hpOppgave
    Abstract [en]

    The Master thesis explores the knowledge sharing that takes place during the requirement engineering phase of globally distributed information systems development. In recent years, due to globalization, information systems development activities have become increasingly distributed across different geographical locations. Requirement engineering is an important and knowledge intensive phase in the development of information systems. Requirement engineering is the process of identifying, analyzing, documenting, validating and managing the requirements of a system. Effective and efficient knowledge sharing during the requirement engineering is vital for the successful development of information systems. However, the global distribution of the stakeholders has affected knowledge sharing during requirement engineering in various ways making it more challenging.

     

    Drawing on the theories of knowledge sharing within the field of information systems, this interpretive research study aims at exploring stakeholders’ perceptions about the challenges met during the knowledge sharing in requirement engineering phase of globally distributed information systems development projects. More specifically, this Master thesis explores the perceived challenges and generates a list of suggestions to overcome the challenges by conducting qualitative semi-structured interviews among the key stakeholders, both customers and business analysts.

     

    The findings indicate that the knowledge sharing is influenced by challenges such as cultural differences, language barriers, communication issues, coordination issues arising from multiple stakeholders, time difference and difficulty in sharing tacit knowledge in the globally distributed settings. Participants’ suggestions for overcoming these challenges include cultural trainings, kick off meetings, language trainings, use of translator, face-to-face communication and interaction, video conferencing, scheduling important meetings in the common suitable timings, identification of the main stakeholders, having a mediator and making close observations with face-to-face interactions.

     

     

    Keywords:  Information Systems, Information Systems Development, Requirement Engineering, Knowledge Sharing, Global Distribution, Outsourcing

     

     

  • 27.
    Adelakun, Olawale
    Högskolan Väst, Institutionen för ekonomi och it.
    The Role of Business Intelligence in Government: A Case Study of a Swedish Municipality Contact Center2012Independent thesis Advanced level (degree of Master (One Year)), 10 poäng / 15 hpOppgave
    Abstract [sv]

    The aim of this study is to investigate the role Business Intelligence (BI) can play in government and more specifically at the municipality level. The study aims to investigate how data collected from a municipality Contact Center can be leveraged with the help of a BI solution. The study focuses on the Contact Center at Järfälla Kommun (municipality) and investigates whether a BI implementation can help to realize more effective planning, resource allocation and improved services and e-services. Municipality Contact Centers are becoming an increasingly popular precedent providing municipal residents with a centralized service where they can make inquiries, provide information, lodge complaints or commend actions related to activities within the specific municipality. BI can turn raw data into concrete figures and reports, map patterns and trends and support effective decision making. It can also however be costly and difficult to integrate and face resistance due to perceived complexity. This paper aims to take such notions into consideration and investigate the feasibility of implementing such a solution in the context of a municipality Contact Center.

    This paper identifies various benefits and drawbacks from literature which are then modeled into a SWOT framework. In addition, semi-structured interviews are utilized in this study and targeted at stakeholders knowledgeable in the Contact Center, BI, or both. Findings from the SWOT framework will be measured against the findings from the interviews and an analysis of correlations between the two sources will be investigated.

  • 28.
    Adolfsson, Emma
    et al.
    Mälardalens högskola, Akademin för innovation, design och teknik.
    Ergül, Caroline
    Reducering av produktionstryck i A-linan: Förflyttning av produkt2013Independent thesis Basic level (university diploma), 10 poäng / 15 hpOppgave
  • 29.
    Adolfsson, Kim
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Avdelningen för industridesign.
    Skänk: Att skapa ett intressant utseende2016Independent thesis Basic level (university diploma), 10 poäng / 15 hpOppgave
    Abstract [sv]

    I denna uppsats skriver jag om hur man skapar en intressant och spännande kontrast mellan olika material och mönster i min examensmöbel. Jag beskriver även kortfattat hur jag kom fram till just detta, samt varför jag valde de metoder jag använde mig av.

     

    Jag valde mellan vanlig brun MDF-skiva, Valchromat (genomfärgad MDF-skiva) och en färg.

     

  • 30.
    Afshari, Houtan
    Mälardalens högskola, Akademin för innovation, design och teknik.
    Finding optimum batch sizes for a high mix, low volume surface mount technology line2014Independent thesis Advanced level (degree of Master (Two Years)), 20 poäng / 30 hpOppgave
  • 31.
    Aggarwal, Shubhesh
    et al.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Tekniska sektionen, Institutionen för teknikvetenskaper, Industriell teknik.
    Kaldi, Kjzal
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Tekniska sektionen, Institutionen för teknikvetenskaper, Industriell teknik.
    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 poäng / 30 hpOppgave
    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.

  • 32.
    AGORAS, DIMITRIS
    KTH, Skolan för industriell teknik och management (ITM), Industriell ekonomi och organisation (Inst.), Industriell Marknadsföring och Entreprenörskap.
    Building Information Modeling (BIM) Adoption Barriers: An Architectural Perspective2018Independent thesis Advanced level (degree of Master (One Year)), 10 poäng / 15 hpOppgave
    Abstract [en]

    Building Information Modeling (BIM) is the latest development in the Architecture, Engineering and Construction (AEC) Industry. This development can be used for planning, design, construction, operation and maintenance of any facility. The majority of the users of BIM technology are architects. Although its benefits had been highlighted and underlined especially in comparison with older developments such us Computer Aided Design (CAD) tools, its implementation is considered still in an early stage due to low adoption from architects.

    Right now in Sweden and more specifically in the Stockholm area, the construction sector is booming due to the increased demand for housing.  Thus, there is an increased demand for more houses in a shorter time.

    BIM is a technology that can enhance the society in terms of design and construction with regard to the building environment. This can be achieved by avoiding human errors, decreasing project costs, increasing the productivity and quality, and reducing the project delivery time. Moreover, BIM can assist the management team in maintaining and operating different facilities.

    The focus of this research is on the barriers to adopting BIM technology in architectural companies. Furthermore, the attempt will be to investigate the individual, organizational and technical aspects that affect BIM adoption.  This study will implement a qualitative research method by in-depth interviewing four professionals in the area of architectural design.

    This investigation will be driven by the main research question, which is: What are the barriers to adopting Building Information Modeling (BIM) in architectural companies?

  • 33.
    Agrell, Fredrik
    KTH, Skolan för industriell teknik och management (ITM), Maskinkonstruktion (Inst.), Maskinkonstruktion (Avd.).
    Control of HCCI by aid of Variable Valve Timings with Specialization in Usage of a Non-Linear Quasi-Static Compensation2006Doktoravhandling, med artikler (Annet vitenskapelig)
    Abstract [en]

    This doctoral thesis is about controlling the combustion timing of the combustion concept Homogeneous Charge Compression Ignition, HCCI, by means of variable valve timings.

    The HCCI research usually is regarded to have started in Japan during the later part of the 1970´s. The world of HCCI has since grown and HCCI is of today researched worldwide. Of particular interest from a Swedish point of view is that Lund Institute of Technology has emerged as one of the world leading HCCI laboratories.

    The idea with HCCI is to combine the Otto and Diesel engine. As in an Otto engine the charge is premixed but as in a Diesel engine the operation is unthrottled and the compression heat causes the ignition. The combustion that follows the ignition takes place homogeneously and overall lean. The result is ultra low NOx and particulate emissions combined with high total efficiency. A difficulty with the HCCI-concept is that it only works in a narrow area and that there is no direct way to control the Start Of Combustion, SOC. Out of this follows that timing/phasing of the combustion is one of the main difficulties with HCCI combustion concepts. This is particularly emphasized during transient operation and calls for feedback control of the combustion timing.

    This work investigates one method, the variable valve timing, to achieve feedback control of the combustion phasing. From the work it can be concluded that the variable valve timing can control the combustion phasing during engine transients. In order to improve the performance a non-linear compensation from ignition delay to valve timings has been suggested, incorporated in a control structure and tested in engine test. The engine test has been performed in a single cylinder engine based on a Scania truck engine. The speed range from 500 to 1750 rpm and the load range 1.26 and 10.5 bar of netIMEP has been covered with fair transient performance.

  • 34.
    Aguilera, Rafael
    Högskolan i Gävle, Institutionen för teknik och byggd miljö.
    Implementation of a ceramic coating based upon the concept of emissivity2008Independent thesis Advanced level (degree of Master (One Year)), 20 poäng / 30 hpOppgave
  • 35.
    Ahlberg, Anton
    Luleå tekniska universitet, Institutionen för konst, kommunikation och lärande, Medier ljudteknik och upplevelseproduktion och teater.
    Perceived audio quality of compressed audio in game dialogue2016Independent thesis Basic level (degree of Bachelor), 10 poäng / 15 hpOppgave
    Abstract [en]

    A game could have thousands of sound assets, to fit all of those files to a manageable storage space it is often necessary to reduce the size of the files to a more manageable size so they have to be compressed. One type of sound that often takes up a lot of disc space (because there is so much of it) is dialogue. In the popular game engine Unreal Engine 4 (UE4) the the audio is compressed to Ogg Vorbis and has as default the bit rate is set to 104 kbit/s. The goal of this paper is to see if untrained listeners find dialogue compressed in Ogg Vorbis 104 kbit/s good enough for dialogue or if they prefer higher bit rates. A game was made in UE4 that would act as a listening test. Dialogue audio was recorded with a male and a female voice-actor and was compressed in UE4 in six different bit rates. 24 untrained subjects was asked to play the game and identify the two out of six robots with the dialogue audio they thought sound the best. The results show that the subjects prefer the higher bit rates that was tested. The results was analyzed with a chi-squared test which showed that the null-hypothesis can be rejected. Only 21% of the answers were towards UE4s default bit rate of 104 kbit/s or lower. The result suggest that the subjects prefer dialogue in higher bit rates and UE4 should raise the default bit rate.

  • 36. Ahlberg, Simon
    et al.
    Hörling, Pontus
    Jöred, Karsten
    Lindström, Björn
    Mårtenson, Christian
    Neider, Göran
    Schubert, Johan
    Sidenbladh, Hedvig
    Svenson, Pontus
    Svensson, Per
    Unden, Katarina
    Walter, Johan
    The IFD03 information fusion demonstrator2004Inngår i: Proceedings of the Seventh International Conference on Information Fusion, FUSION 2004, 2004, s. 936-943Konferansepaper (Fagfellevurdert)
    Abstract [en]

    The paper discusses a recently developed demonstrator system where new ideas in tactical information fusion may be tested and demonstrated. The main services of the demonstrator are discussed, and essential experience from the use and development of the system is shared.

  • 37.
    Ahlin, Katarina
    et al.
    Linköpings universitet, Institutionen för teknik och naturvetenskap, Kommunikations- och transportsystem. Linköpings universitet, Tekniska högskolan.
    Bredin, Sanna
    Linköpings universitet, Institutionen för teknik och naturvetenskap, Kommunikations- och transportsystem. Linköpings universitet, Tekniska högskolan.
    European Aviation Crisis Management2013Independent thesis Basic level (degree of Bachelor), 10 poäng / 15 hpOppgave
    Abstract [en]

    Our aim is to investigate and evaluate the efficiency of crisis management in European aviation, and to recommend enhancements. To fulfill this, we mapped the current crisis management plans and created a fictive scenario where a cyber-attack shut down the power at five of the major airports in Europe. Air traffic in Europe was reconstructed to a chosen day; the 16th of September 2013, and the reconstructed traffic situation was used in the scenario. We also created a model, for the purpose of showing the effect of a cut in time for the steps in the crisis management plan may have on the traffic waiting to depart at the closed airports. When using these means, we could implement the crisis management plans on the fictive scenario and make changes to the plans for a new implementation. The existing crisis management plans were compared to the modified plans made by us, and it was found that usage of a common platform for the different stakeholders involved in the crisis could improve the efficiency of the crisis management.

  • 38.
    Ahlqvist, Carolina Marianne
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Tekniska sektionen, Institutionen för teknikvetenskaper, Fasta tillståndets fysik.
    Projektorganiseringen som drivkraft och hinder för industriell förnyelse i byggindustrin: en fallstudie av Skandionkliniken2014Independent thesis Advanced level (professional degree), 20 poäng / 30 hpOppgave
    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.

  • 39.
    Ahlqvist, Theresé
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Avdelningen för informations- och kommunikationssystem.
    Hur ett tvärfunktionellt samarbete kan motverka stuprörsstrukturer: Kommunikationens roll i det organisatoriska gränssnittet mellan olika avdelningar2016Independent thesis Basic level (degree of Bachelor), 10 poäng / 15 hpOppgave
    Abstract [en]

    Stovepipes, or also called silos, appear in many different organizations and sectors and contribute to problems when employees or managers tend to look more to their own, or the individual departments, objectives rather than to the organizations. The purpose of this study was to identify different communicative factors that promote stovepipes in order to further identify the most critical factor to disarm. A case study has been done at a selected company, with a stovepipe structure, in order to achieve the purpose of the study. The case study has included interviews and observations to identify different problem areas which then have been compared with three communicative factors identified in previous studies. The factor that had the most connections to the problem areas have been considered the most critical factor. The result of the study indicates that “A lack of understanding each other's work” is the most critical factor in stovepipe structures and that it can be prevented by following five recommendations: bring up positive collaboration continually, raise problems with each other instead of with others, identify different communication paths in and between the departments, implement a long-term model for preventing stovepipes and set up workshops between the involved departments. The conclusion of the study is that stovepipes create several undesirable effects in the organization but that the efforts to counter these problems do not have to be complicated. Following five small steps into a better collaboration and communication can be enough to be on your way to a better organizational structure.

  • 40.
    Ahlqvist, Theresé
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Avdelningen för informationssystem och -teknologi.
    "Är det alltid negativt att vara konservativ?": En problematisering av stämplingen av byggbranschen som konservativ2018Independent thesis Advanced level (professional degree), 20 poäng / 30 hpOppgave
    Abstract [en]

    When investigating the construction industry's lack of digitization, it is often explained that it is because of a conservative culture. The purpose of this study has been to problematize the labelling as conservative and to study a company in the industry to gain a deeper understanding of what other problems that may exist. Based on this, three research questions were identified which the study had as a goal to answer. These are: how the construction industry can be said to be conservative, how the conservatism is expressed, and what other barriers that exists that cannot be said to be derived from conservatism. The study has been conducted through a case study at Skanska Sverige AB with Region Hus Norr as a delimitation. Furthermore, it has been divided into two phases where semi-structural interviews and a document review have been used as the basis for a description of the current situation. The result shows that it is not a representative state of the construction industry to say that it is conservative, and during the case study no underlying expressions of conservatism was observed. On the other hand, there are several other areas that are considered as the reason for a slow development. The conclusions drawn is that the way the Swedish Public Procurement Act is conducted today is one of the reasons for this. An accelerated change process where some steps in the change management models are skipped is also seen as a reason. Furthermore, there are signs of that the current processes not always support efficient digitization, which indicates that the work in some cases only move from an analog to a digital state. Lastly, an indication of a stove pipe structure in the development area has been observed during the study, which can affect the efficiency and target improvement in a negative way.

  • 41.
    Ahlqvist, Theresé
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Avdelningen för informationssystem och -teknologi.
    "Är det alltid negativt att vara konservativ?": En problematisering av stämplingen av byggbranschen som konservativ2018Independent thesis Advanced level (degree of Master (Two Years)), 20 poäng / 30 hpOppgave
    Abstract [en]

    When investigating the construction industry's lack of digitization, it is often explained that it is because of a conservative culture. The purpose of this study has been to problematize the labelling as conservative and to study a company in the industry to gain a deeper understanding of what other problems that may exist. Based on this, three research questions were identified which the study had as a goal to answer. These are: how the construction industry can be said to be conservative, how the conservatism is expressed, and what other barriers that exists that cannot be said to be derived from conservatism. The study has been conducted through a case study at Skanska Sverige AB with Region Hus Norr as a delimitation. Furthermore, it has been divided into two phases where semi-structural interviews and a document review have been used as the basis for a description of the current situation. The result shows that it is not a representative state of the construction industry to say that it is conservative, and during the case study no underlying expressions of conservatism was observed. On the other hand, there are several other areas that are considered as the reason for a slow development. The conclusions drawn is that the way the Swedish Public Procurement Act is conducted today is one of the reasons for this. An accelerated change process where some steps in the change management models are skipped is also seen as a reason. Furthermore, there are signs of that the current processes not always support efficient digitization, which indicates that the work in some cases only move from an analog to a digital state. Lastly, an indication of a stove pipe structure in the development area has been observed during the study, which can affect the efficiency and target improvement in a negative way.

  • 42.
    Ahlqvist-Juhlin, Maria
    et al.
    Luleå tekniska universitet, Institutionen för konst, kommunikation och lärande, Medier ljudteknik och upplevelseproduktion och teater.
    Guermouche, Oscar
    Luleå tekniska universitet, Institutionen för konst, kommunikation och lärande, Medier ljudteknik och upplevelseproduktion och teater.
    Koblanck, Maria
    Konstnärliga utbildningar och vetenskap: ett exempel från Luleå Tekniska Universitet2014Inngår i: NU 2014: Umeå 8-10 oktober : abstracts, Umeå: Umeå universitet. Pedagogiska institutionen , 2014, s. 179-Konferansepaper (Fagfellevurdert)
  • 43.
    Ahmedi, Figene
    et al.
    University of Prishtina, Serbia.
    Ahmedi, Lule
    University of Prishtina, Serbia.
    O'Flynn, Brendan
    Tyndall National Institute, Ireland ; University College Cork, Ireland.
    Kurti, Arianit
    Linnéuniversitetet, Fakulteten för teknik (FTK), Institutionen för datavetenskap (DV).
    Tahirsylaj, Sylë
    Hydrometeorological Institute of Kosova, Serbia.
    Bytyçi, Eliot
    University of Prishtina, Serbia.
    Sejdiu, Besmir
    University of Prishtina, Serbia.
    Salihu, Astrit
    University of Prishtina, Serbia.
    InWaterSense: An Intelligent Wireless Sensor Network for Monitoring Surface Water Quality to a River in Kosovo2018Inngår i: International Journal of Agricultural and Environmental Information Systems (IJAEIS), ISSN 1947-3192, Vol. 9, nr 1, s. 39-61Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    A shift in water monitoring approach from traditional grab sampling to novel wireless sensors is gaining in popularity not only among researchers but also in the market. These latest technologies readily enable numerous advantageous monitoring arrangements like remote, continuous, real-time, and spatially-dense and broad in coverage measurements, and identification of long-term trends of parameters of interest. Thus, a WSN system is implemented in a river in Kosovo as part of the InWaterSense project to monitor its water quality parameters. It is one of the first state of the art technology demonstration systems of its kind in the domain of water monitoring in developing countries like Kosovo. Water quality datasets are transmitted at pre-programmed intervals from sensing stations deployed in the river to the server at university via the GPRS network. Data is then made available through a portal to different target groups (policy-makers, water experts, and citizens). Moreover, the InWaterSense system behaves intelligently like staying in line with water quality regulatory standards.

  • 44.
    Ahrenberg, Lars
    Linköpings universitet, Institutionen för datavetenskap, Interaktiva och kognitiva system. Linköpings universitet, Tekniska fakulteten.
    Alignment2014Inngår i: Routledge Encyclopedia of Translation Technology / [ed] Chan Sin-wai, London and New York: Routledge, 2014, s. 395-408Kapittel i bok, del av antologi (Fagfellevurdert)
  • 45.
    Akama-kisseh, Jerome
    Blekinge Tekniska Högskola, Fakulteten för datavetenskaper, Institutionen för kreativa teknologier.
    EXPLORING COMPUTERIZED TROUBLE TICKETING SYSTEM AND ITS BENEFITS IN VODAFONE GHANA2016Independent thesis Advanced level (degree of Master (One Year)), 10 poäng / 15 hpOppgave
    Abstract [en]

    Today more than ever, Computerized Trouble Ticketing System is becoming a booming information technology system that makes the difference between staying in business in a competitive global telecommunication arena.

    This quantitative exploratory survey utilised conveniently selected research subjects to explore computerized trouble ticketing system and its inherent benefits in Vodafone Ghana Plc. Cross section of vital data set collected with the aid of structured questionnaires haven been analyzed using descriptive statistics model.

    The study revealed that, effective and efficient usage of computerized trouble ticketing systems benefit the company in terms of its customer satisfaction, competitive advantage and business intelligence in competitive telecom arena. Nevertheless, the smooth realization of these inherent benefits are constantly challenged by complexity in managing volumes of data generated, intense era of competition, high cost of trouble ticketing system, as well as, rapid technological obsolesce in computerized trouble ticketing applications in telecommunication market.

    The study recommended for the quick and effective adoption of differentiation strategy, cost leadership strategy and customer relationship management, which are customer-centric measures that can build sustainable long-term customer relationship that can create value for the company, as well as, for the customers.

  • 46.
    AKTAR, SHAMIMA
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för fysisk planering.
    Urban Public Space: A Case from Developing Country2017Independent thesis Advanced level (degree of Master (One Year)), 10 poäng / 15 hpOppgave
    Abstract [en]

    Cities in developing world are inadequately equipped with public spaces. The increasing urbanizations trend is attracting more people to come to the cities without having proper sustainable plan for public spaces. However, this social public place holds the important function for urban well-being and collective recognition. This is the place where human can participate as fully fledged social subjects in complex civic life. Unfortunately, in most cases the provision of public space in these cities is always neglected or poorly integrated in planning legislations. So, in many cases community people make their own ways of social interaction that gives public space a new definition. Khulna, one of the divisional cities of Bangladesh, is going through the similar developing country situation. Lack of fund and space restricts development agencies to make new public spaces in this city. On the other hand management and coordination challenges between multilevel planning authorities also making existing public spaces malfunctioned. Sustainably planned, created and managed public spaces are hence urged for the cities of developing world to get livable and healthy urban environment.

  • 47.
    Al Farra, Hussni
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Logistik- och kvalitetsutveckling.
    Acceptance Tests – FAT & SAT: An Empirical Case Study of Utility Poles2016Independent thesis Advanced level (degree of Master (Two Years)), 80 poäng / 120 hpOppgave
    Abstract [en]

    The overall purpose of this project is to devise improved quality acceptance procedures to examine quality characteristics of utility poles at the factory of the supplier (FAT) and on-site upon receipt by the customer (SAT). To that end, the thesis draws upon available standards, literature, and industry practices regarding wood, fiberglass and steel poles. As far as the design of the research, a single case study of a major power company was chosen. Then, a data collection plan was developed in order to build upon the existing knowledge found in the literature, and upon the data that can be collected from three of the Company’s suppliers, in addition to the Technical Research Institute of Sweden (SP). Documents’ analysis, interviews, observations, and a survey were the tools of that plan. It was found that criteria, inspection and test methods of wood poles are all sufficiently covered in the standards and the literature; for wood is the most commonly used material for utility poles. Next, in coverage of research, are the steel poles; while there is currently no standard that covers fiberglass utility poles. Indeed, quality characteristics, criteria, and acceptance procedures can altogether form parts of a sustainable solution, as long as the quality is managed as a process whether at the Company’s end or at the fabrication sites; that is especially true if there is some form of backward partnership between the Company and its suppliers.

  • 48.
    Alawi, Hussein
    et al.
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Avdelningen för informationssystem och -teknologi.
    Guyo, Hassan
    Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Avdelningen för informationssystem och -teknologi.
    En värdeflödesanalys av ett reservdelslager i en fluktuerande marknad.: En fallstudie med avseende att implementera Lean.2017Independent thesis Basic level (professional degree), 10 poäng / 15 hpOppgave
    Abstract [sv]

    Företag inom stålindustrin tacklas nuförtiden med en fluktuerande och oförutsägbar marknad. Detta resulterar i försiktiga åtgärder och svårigheter med att planera och uppnå långsiktiga mål. Ovissheten leder till att beslut ibland baseras på felaktiga prognoser. I höjden av denna fluktuerande marknad behövs vanligtvis förstärkning i och med att efterfrågan ökar. Detta leder till att företag ställs inför svåra beslut, att anställa ytterligare personal och/eller utöka lagerhållning. Denna marknad kan så småningom vända och detta leder till varsel av personal samt kontraktion av depåer för att hålla en viss vinstnivå, som det tidigare har hänt. Ett av alternativen som återstår i dagsläget är effektivisering av orderhanteringsprocessen för att reducera ledtider och klara av ökande efterfrågan. Lean är en välkänd metod för att effektivera flöden i processer. Företagets reservdelslager arbetar inte med Lean i dagsläget. Syftet med denna fallstudie är att undersöka med värdeflödesanalys(VSM) och diskret händelse simulation vilka kritiska punkter och flaskhalsar som existerar i reservdelslagret och målet är att sedan eliminera de med Lean som arbetssätt. Första steget bestod av att kartlägga orderhanteringsprocessen med en processpromenad och sedan analysera de olika aktiviteterna. Detta möjliggjorde en identifiering av flaskhalsar och kritiska punkter. Resultatet presenterar ett nuläge av företaget med en cykeltid på 224 sekunder/artikel och en ledtid på 1549 sekunder/order. En order har även ett genomsnitt på 6 artiklar varav fem ligger på hyllor och en på lagerautomat. Flödet har illustrerats i ett spagettidiagram. I koppling med teorin har ett par förbättringsförslag föreslagits som exempelvis en omstrukturering av artiklar på hyllor utifrån pareto(ABC)-analys. Detta ska reducera ledtiden. Flaskhalsarna som har identifierats är osynkroniserade arbetsrutiner och ineffektiva lagerstrukturer. Därmed har ett antal effektivare framtida lägen med reducerade ledtider föreslagits. Slutsatsen är att Lean principer som ”Jidoka”(ständiga förbättringar) och Just in time(lägre ledtider i princip) kan implementeras med olika lösningar som VMI, IT och automatisering. Fortsatta studier kan utvärdera varje lösning med DES och även jämföra olika kostnader i förhållande till nytta.

  • 49.
    Albini, Gabriele Luigi Aldo
    KTH, Skolan för industriell teknik och management (ITM), Industriell ekonomi och organisation (Inst.).
    "An Analysis of the European Telecommunications Strategic Environment: How Can Strategic Actions Be Defined to Adapt to the New Scenario? A Telefónica Case Study"2013Independent thesis Advanced level (degree of Master (Two Years)), 20 poäng / 30 hpOppgave
    Abstract [en]

    This research presents an analysis of the European Telecommunication strategic environment with particular focus on the three macro-changes which have been influencing the recent history of such industry. These are, first of all, the shift from a government-controlled market to a privatized market. Second, the introduction of price limitations - called Eurotariff - which are supposed to regulate the mobile traffic throughout Europe. Finally, the constant growth of data and internet traffic demand, compared to the voice traffic demand, mainly due to the success of OTTs (Over-the-Tops) and the introduction of NGN (Next-Generation Network) applications and software. Such changes have increased the competition in an industry which was organized in monopolies and are forcing the companies to change, following the different customers' needs. Throughout the essay, a case study about Telefónica has been developed: after a presentation of the company and of Telefónica's deregulation process, the consequences of the environment analysis will be defined and, finally, some strategic actions will be proposed in order to adapt to the new strategic environment. The methodology which has been followed consists in a research on the models existing in literature designed to analyze the strategic environment. The best ones have been used and applied to the real case, involving Telefónica: the findings obtained have then been considered the basis to define the strategic actions. The purpose of the paper is twofold: first of all to offer an understanding of the telecommunications business with a particular focus on the Eurotariff, OTTs and NGN phenomena; second to show how a strategic environment can be effectively studied, focusing on the changes that characterize the industry, and how the consequences can be deduced. The information coming from this type of studies is very important for a company to understand what to change in order to adapt to a new context and achieve better performances.

  • 50.
    Albiz, Niccolas
    KTH, Skolan för industriell teknik och management (ITM), Industriell ekonomi och organisation (Inst.), Hållbarhet och industriell dynamik.
    Sustainability Education at Industrial Engineering Programs in Sweden: A study of the relevant and received sustainability education, and the associated challenges, at 5-year industrial engineering programs2015Independent thesis Advanced level (degree of Master (Two Years)), 20 poäng / 30 hpOppgave
    Abstract [en]

    The public concern for sustainability issues is ever increasing whilst the trust in corporations is decreasing. CEOs now see sustainability concern and compliance as an important component in retaining their competitive advantage and regaining the trust of their surrounding community. For these reasons it is important to find new manners of uniting societal improvement with business, requiring new forms of competencies. This study has investigated what sustainability education is actually central to the industrial engineering profile, as well as what of this is then covered in the programs.

    The study involved two phases. The first involved interviewing experts as to what was central for these engineers to learn, resulting in a content list. The second phase involved mapping the instances of this content in the five largest industrial engineering programs (covering circa 74% of these students) as well as the associated challenges to broaching this content. The first phase was primarily qualitative whilst the second phase was largely quantitative, though each data point consisted of a qualitative interview.

    Five key insights can be drawn from the study regardless of normative stand-point. 1) The sustainability topics that were deemed relevant cover a vast area of disciplines and aspects. 2) There is a skewedness in the content covered, favouring the environmental aspects. 3) There is a lack of integrative instances where the knowledge from different sources and perspectives is synthesized. 4) The key challenges revolve around concept definition and communication. 5) The normativity, interconnectedness and pedagogics contribute with uncertainty and complexity in the assessment of sustainability education.

    The study is finalized with a synthesis of the various insights to arrive at the conclusion that having sustainable business practice as the aim of the programs, establishing common content goals and employing active learning approach would circumvent many of the perceived challenges as well as align the programs with the need of the industry.

    This study contributes with deeper understanding of the sustainability education required and provided to industrial engineering students in Sweden. As such the study has practical applications for the programs studied. The theoretical implications of this study lie in the empirical data achieved regarding the topics of relevance to these engineers, showing high levels of agreement with current literature, as well as the perceived challenges to broaching this content in the current curricula. Furthermore it provides empirical data as to the sustainability education received at different programs.

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