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  • 201.
    Dorosh, Anastasiia
    Linnaeus University, Faculty of Technology, Department of Physics and Electrical Engineering.
    Design of Microstrip Microwave Devices with Lumped Elements by Means of Modern CADs2013Independent thesis Advanced level (degree of Master (One Year)), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    In this report the analysis of microstrip electrodynamic structures on basis of high-temperature superconductors is carried out and a mathematical model of microstrip devices with lumped and distributed nonlinear properties is created. For this purpose nonlinear integral equations method and method of moments are used.

    In the issue of the work a SHF filter based on the equivalent circuit of elements with lumped parameters is also studied. It is ascertained that the received mathematical model allows to achieve more proper results of modeling on compensation of variation of current-density distribution nearby the edges of conductor break.

  • 202.
    Dorosh, Anastasiia
    Linnaeus University, Faculty of Technology, Department of Physics and Electrical Engineering.
    Direction-of-Arrival Estimation in Spherically Isotropic Noise2013Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Today the multisensor array signal processing of noisy measurements has received much attention. The classical problem in array signal processing is determining the location of an energy-radiating source relative to the location of the array, in other words, direction-of-arrival (DOA) estimation. One is considering the signal estimation problem when together with the signal(s) of interest some noise and interfering signals are present.

    In this report a direction-of-arrival estimation system is described based on an antenna array for detecting arrival angles in azimuth plane of signals pitched by the antenna array. For this, the Multiple Signal Classication (MUSIC) algorithmis first of all considered. Studies show that in spite of its good reputation and popularity among researches, it has a certain limit of its performance. In this subspace-based method for DOA estimation of signal wavefronts, the term corresponding to additive noise is initially assumed spatially white. In our paper, we address the problem of DOA estimation of multiple target signals in a particular noise situation - in correlated spherically isotropic noise, which, in many practical cases, models a more real context than under the white noise assumption.

    The purpose of this work is to analyze the behaviour of the MUSIC algorithm and compare its performance with some other algorithms (such as the Capon and the Classical algorithms) and, uppermost, to explore the quality of the detected angles in terms of precision depending on different parameters, e.g. number of samples, noise variance, number of incoming signals. Some modifications of the algorithms are also done is order to increase their performance.

    Program MATLAB is used to conduct the studies. The simulation results on the considered antenna array system indicate that in complex conditions the algorithms in question (and first of all, the MUSIC algorithm) are unable to automatically detect and localize the DOA signals with high accuracy. Other algorithms andways for simplification the problem (for example, procedure of denoising) exist and may provide more precision but require more computation time.

  • 203.
    Drummond, Jose
    Linnaeus University, Faculty of Technology, Department of Physics and Electrical Engineering.
    An analysis of new functionalities enabled by the second generation of smart meters in Sweden2021Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    It is commonly agreed among energy experts that smart meters (SMs) are the key component that will facilitate the transition towards the smart grid. Fast-peace innovations in the smart metering infrastructure (AMI) are exposing countless benefits that network operators can obtain when they integrate SMs applications into their daily operations. 

    Following the amendment in 2017, where the Swedish government dictated that all SMs should now include new features such as remote control, higher time resolution for the energy readings and a friendly interface for customers to access their own data; network operators in Sweden are currently replacing their SMs for a new model, also called the second generation of SMs. While the replacement of meters is in progress, many utilities like Hemab are trying to reveal which technical and financial benefits the new generation of SMs will bring to their operations.   

    As a first step, this thesis presents the results of a series of interviews carried out with different network operators in Sweden. It is studied which functionalities have the potential to succeed in the near future, as well as those functionalities that are already being tested or fully implemeneted by some utilities in Sweden. Furthermore, this thesis analyses those obstacles and barriers that utilities encounter when trying to implement new applications using the new SMs.

    In a second stage, an alarm system for power interruptions and voltage-quality events (e.g., overvoltage and undervoltage) using VisionAir software and OMNIPOWER 3-phase meters is evaluated. The results from the evaluation are divided into three sections: a description of the settings and functionalities of the alarm, the outcomes from the test, and a final discussion of potential applications.

    This study has revealed that alarm functions, data analytics (including several methods such as load forecasting, customer segmentation and non-technical losses analysis), power quality monitoring, dynamic pricing, and load shedding have the biggest potential to succeed in Sweden in the coming years. Furthermore, it can be stated that the lack of time, prioritization of other projects in the grid and the integration of those new applications into the current system seem to be the main barrier for Swedish utilities nowadays. Regarding the alarm system, it was found that the real benefits for network operators arrive when the information coming from an alarm system is combined with a topology interface of the network and a customer notifications server. Both applications could improve customer satisfaction by significantly reducing outage time and providing customers with real-time and precise information about the problems in the grid.

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    Degree project
  • 204.
    Dunne, Caroline
    Linnaeus University, Faculty of Technology, Department of Physics and Electrical Engineering.
    Att främja reflektion och samarbete: En essä om facilitatorns yrkeskunnande2015Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    This thesis explores the role and skills of a professional facilitator. A facilitator is hired to facilitate meetings and other group processes trough dialogue, conversations and active participation, with the purpose of makig reflection and collaboration within and between organisations possible.

     

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    fulltext
  • 205.
    Dunne, Caroline
    Linnaeus University, Faculty of Technology, Department of Physics and Electrical Engineering.
    Dialog, engagemang & neutralitet: Vad gör en professionell facilitator?2013Independent thesis Advanced level (degree of Master (One Year)), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    This thesis explores a number of questions around the skills of a Professional Facilitator. It has been completed as part of the Programme on Skill and Professional Development, within the Faculty of Technology at Linneaus University, Sweden.

    A Professional Facilitator is a person who is both neutral to the group, and the subject under discussion. The facilitator plans, prepares, and runs workshops where dialogue, commitment and neutrality all play a central role.

    The practical insights presented within, are derived from the texts that I have submitted as part of the programme requirements during 2011-2013. The insights are based on my direct experience from facilitating professional workshops over the last 18 years. These insights have been presented in the context of the relevant literature and research within the areas of skill and technology.

    The conclusions from my work clearly show that the development of my skills is as much grounded in a structured approach to continued Professional Development as it is in experiential learning. I have developed skills regarding group dynamics, as well as methods and tools that can be appropriately applied in different contexts, subjects and groups.

    Every meeting I facilitate is completed in real-time, which means that I do not have the opportunity to rehearse or prepare for all eventualities. However, I am always very well prepared and have a tailor-made plan for every meeting. Improvisation is key, and is always required no matter what level of planning has been completed.

    My experience clearly shows that a Professional Facilitator needs to believe in the individuals potential, show no prejudice, and listen and hear what is being said both directly and indirectly. A facilitator needs to be alert throughout the whole meeting and take a neutral stance in relation to the group, the subject and the Meeting Sponsor.

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    MagisteruppsatsCarolineDunne
  • 206.
    Dupuis, Antoine
    Linnaeus University, Faculty of Technology, Department of Physics and Electrical Engineering.
    Towards a Data-Driven Approach to Ground-Fault Location in Distribution Power System using Artificial Neural Network2021Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Motivated by the need for less polluting energy production, the recent increase in renewable electricity production is reshaping classical power systems. Initially unidirectional and constant power flow becomes multi-directional and dynamic. As one of the many consequences, classical power system fault location methods might become outdated.To this extent, the development of new methods as well as improvement of already existing methods is of great interest. Additionally, robust and fast means of fault location strengthen power system reliability by improving recovery time. Since most of the faults occur at the distribution level, a study of the main fault location methods in distribution power systems is first conducted. Relevant information about their respective advantages and drawbacks put into light the need to improve classical fault location methods or to develop new methods. The main objective of the thesis is to develop a prototype data-driven ground fault location method that aims to improve the robustness and accuracy offault location in the power system, as well as offer new solutions for fault location.

    An 11-bus 20 kV distribution power system with distributed generation is modeled to test the method. As a requirement for data-driven methods, the dataset is provided through simulation where time-domain three-phase voltages at the system substation during fault are generated. This data is then processed using dyadic discrete wavelet transform, a powerful signal processing method, to extract useful information of the signal, after what relevant features are found from the wavelet coefficients. To predict the location ofthe fault, neural networks are trained to find potential correlations between computed features and the distance of the fault from the substation. After testing and comparing different combinations of neural networks, results are analyzed, and eventually, challenges and potential improvements for further development and application of the method are introduced.

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    Master Thesis
  • 207.
    Edvardsson, Bodil
    Linnaeus University, Faculty of Technology, Department of Physics and Electrical Engineering.
    Yrkeskunnande inom vården: Språkets betydelse och berättelsens kraft för att förmedla det praktiska yrkeskunnandet2015Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [sv]

    Materialet för uppsatsen är berättelser i essäform, som grundar sig på erfarenheter och

    iakttagelser från författarens yrkes-och livserfarenheter. Uppsatsens röda tråd är

    utforskandet av vårdens praktiska kunskap dess underordnade roll inom

    kunskapsvetenskap och dess förhållande till teoretisk kunskap. Det är fyra berättelser

    som är bärande i uppsatsen. Samtliga berättelser är bearbetade i dialogseminarium inom

    yrkeskunnande och teknik för fördjupad och utvecklad frågeställning.

    Hur kan berättelser och analogier förmedla och synliggöra vårdens praktiska kunnande

    och dess betydelese för vårdens kvalitet? Kanske kan berättelsen som metod även stärka

    den praktiska kunskapens särart och ge den den uppmärksamhet och position som den

    förtjänar?

    Den praktiska kunskapen tillhör görandet och det är där som det oåterkalleliga händer,

    men teoretisk kunskap är högre värderat inom vetenskap. Inom vården är teori och

    praktik beroende av varandra, men den praktiska kunskapen kräver en annan metod att

    synliggöra och erövra.

    Hur utvecklas empati inom vården? Vad är det att vara professionell men ändå

    personlig? Hur lyckas vårdpersonal att kombinera spontanietet och ändå hålla sig till

    den förutsatta planen? Hur kan omvårdnadskonsten leva vidare trots att allt mer ska

    mätas och planeras utifrån matematiskt språk? Hur kan vi handleda och skapa en praxis

    på arbetsplatsen på ett sätt så att novisen får mod och hjälp att utveckla sitt praktiska

    jag?

    Genom berättande, både i form av eget skrivande och genom skönlitteratur, teater och

    film ges möjlighet att synliggöra yrkeskunnande Berättelsen i sig själv men även som

    analogi, erbjuder tillfälle till reflektion som är förutsättning både till empatisk mognad

    och till utveckling av yrekskunnandet. Det ger även en gestalting av yrkeskunnande och

    tyst kunskap som inte återges i traditionell kurslitteratur. I denna uppsats finns något av

    det gestaltat.

    Denna uppsats är ett resultat av studier vid masterprogrammet yrkeskunnande och

    teknik vid Linnéuniversitetet HT 2013-Vt 2015.

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    fulltext
  • 208.
    Ekelin, Annelie
    Linnaeus University, Faculty of Technology, Department of Physics and Electrical Engineering. Linnaeus University, Faculty of Arts and Humanities, Department of Media and Journalism.
    Action Research Changes in Local Journalism Projects: how to make it sustainable?2021In: 8th European Communication Conference Online, 6-9 september 2021, 2021Conference paper (Refereed)
    Abstract [en]

    My contribution to the proposed panel is focusing on the potential of using participatory action research to contribute to the development of local journalism both locally but also in various policy contexts. By making visible and adress what agenda, all involved parties is driving fo their own purpose, is it then possible to define a common ground to develop, in order to achieve substantial changes. Does this make it possible to achieve more  sustainable interventions on several levels i.e in a local working group, a community, an organization or at a public policy agency level? These different “power levels” are normally regarded as separated but can they also be regarded as a collaborative system?  I propose that this issue need to be discussed and problematized in relation to the question on sustainability of action research. Does intervention always have to be located in a clearly delineated action research project or are there also possibilities to discuss "systemic change”  and how different levels of interferences interact with one another? Based on a distinction between a pragmatic and a critical orientation in action research, which is presented in an article by Johansson & Lindhult (2008) is my aim also to initiate a discussion on whether a development- and action-oriented project design contribute to development and change of local journalism on more than one level - but also what ethical implications this normative stance may bring. This will be discussed in relation to findings within a Swedish research and development project, the Regpress Project II, addressing local journalism innovation.  Local journalism in general is facing economic difficulties such as rapid declines in revenues. However in some areas of Sweden local journalism in traditional sense is still strong and forming a dynamic local news ecosystem, where local media seem to have found a way to balance their role as trust-anchor during rapid societal changes. 

  • 209.
    Ekelin, Annelie
    Linnaeus University, Faculty of Technology, Department of Physics and Electrical Engineering. Linnaeus University, Faculty of Arts and Humanities, Department of Media and Journalism.
    Kommunikation och berättande2021In: Introduktion till medieteknik / [ed] Pernilla Josefsson Falkengren & Mikael Wiberg, Lund: Studentlitteratur AB, 2021, 1, p. 45-56Chapter in book (Refereed)
    Abstract [sv]

    Introduktion till medieteknik är boken för dig som vill få en introduktion till ämnet medieteknik. Vi vänder oss till dig som är intresserad av hur teknologier och dess användning möts − från ett fokus på mediekonsumtion, till hur medier formar vårt moderna samhälle. Boken ger en introduktion till medieteknikens olika former, ­kanaler, och uttryckssätt, och vi ger även en inblick i hur medieteknik skapas. Med en utgångspunkt i design, programmering och medieteknikens visuella och audiella uttryck ges en vidare introduktion till medieteknikens tillämpnings­om­­­råd­en − från speldesign till interaktiva medier. Boken berör också angreppssätt för att arbeta användarcentrerat med digital medieutveckling och design, samt berör projektledning för utveckling av digital medieteknik. Med denna intro­duktion till medieteknik som ämne visar boken på ett antal framväxande områden för vidare forskning inom medieteknik. Introduktion till medieteknik är sammansatt så att den med fördel kan ­användas som kurslitteratur i utbildning inom områden som medieteknik, ­medie­­- produktion, design för digitala medier eller motsvarande. Boken kan läsas som en helhet, alternativt som fristående kapitel.

  • 210.
    Ekelin, Annelie
    Linnaeus University, Faculty of Technology, Department of Physics and Electrical Engineering. Linnaeus University, Faculty of Arts and Humanities, Department of Media and Journalism.
    Repairment of communication deficit issues in the society through norm creative municipal communication2021In: Presented at IFIP Technical Committee Working Group on Gender, Diversity, and ICT at Linköping University 20210416, 2021Conference paper (Refereed)
    Abstract [en]

    Written general information, and communication through e-services from municipalities and other authorities can be difficult to understand and use for people with a foreign mother tongue. Recieving municipal information is not simply an issue of being "informed" for newly arrived individuals, it is  also an essential part of conquering a new identity and finding out how to relate to a new cultural framework of a new society. Being informed and welcomed as a citizen of a new country is also the first step in deepening a process of belonging and an offer of opportunities for increased personal freedom of action.

    The easy-to-read format has become the standard means to adapt and simplify official texts for the groups which are regarded difficult to reach. However, this format is originally designed for people with intellectual disabilities and does not take into account the varying needs of other target groups including for example immigrants. A citizen survey especially targeting people with a foreign first language, showed that 50-60% of the population were not able to fully understand the municipal information. Experiences from a collaborative project between a big municipality, an accessibility company and a university, shows the challenges when it comes to developing a norm creative model  in order to repair what turned out to be a highly complex societal problem, rather than finding a universal communication style.

  • 211.
    Ekelin, Annelie
    et al.
    Linnaeus University, Faculty of Technology, Department of Physics and Electrical Engineering. Linnaeus University, Faculty of Arts and Humanities, Department of Media and Journalism.
    Cabrera Fernandez, Itai
    Botkyrka kommun, Sweden.
    Laurin, Susanna
    Funka, Sweden.
    Inkluderande kommunikation: Normkreativ modell för kommuners informationsarbete2020In: Tillgänglighetsdagarna 2020, Funka, Funka , 2020Conference paper (Other academic)
    Abstract [sv]

    Samverkansprojekt med Botkyrka kommun, Linnéuniversitetet och Funka Nu AB har gemensamt undersökt hur samhällsinformation bäst ska utformas för att personer med annat modersmål än svenska ska kunna ta till sig den. Resultatet är en metodik som alla kan ha nytta av – och intressant nog inte alls det vi trodde från början.

    https://www.funka.com/vi-erbjuder/funkas-tillganglighetsdagar/program-2020/

  • 212.
    Ekelin, Annelie
    et al.
    Linnaeus University, Faculty of Technology, Department of Physics and Electrical Engineering.
    Winter, Jeff
    Linnaeus University, Faculty of Technology, Department of Informatics.
    Collaborative creation of trust through local media innovation2020In: Presented at PRAGUE MEDIA POINT – a virtual conference for journalists, media professionals, and scholars on December 1-11, 2020  with workshops on December 12, 2020, 2020Conference paper (Refereed)
    Abstract [en]

    The local press enjoyed remarkable levels of public trust throughout the 20th century, but no longer. The Regpress 2 - Project presented in this session deepens knowledge about the environment in which the regional press operates. It also provides applied research for the regional press, which faces the challenge of becoming leaner and more competitive while maintaining its presupposed role as a reliable “trust anchor.“ What is the relationship between regional media and local citizens? What are the expectations of the press to be part of community life? How to remain relevant and make it happen with limited resources? Find out what answers the Regpress 2 -project has to these questions and more.

  • 213.
    Ekstrand, Christian
    et al.
    Linnaeus University, Faculty of Technology, Department of Physics and Electrical Engineering.
    Karlsson, Gustaf
    Linnaeus University, Faculty of Technology, Department of Physics and Electrical Engineering.
    Utvecklingspotential i distributionsnätet: Undersökning av det lokala elnätet i samarbete med Karlshamn Energi AB2019Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Rapporten innehåller en inledande bakgrundsbeskrivning om hur framtidens utmaningar ser ut vid en utökad lokal elkonsumtion, samt hur det påverkar lokalnätets behov av utökad kapacitet och distribution.

    Arbetet syftar till att undersöka hur belastningen ser ut på berört elnät i samband med Karlshamn Energi AB. Utvecklingspotentialen och stabiliteten på lokal nivå undersöks för att planera inför en tillväxt i elnätet efter behov. Den årliga energiförbrukningen hos villakunder i ett bostadsområde analyseras för att bedöma när behovet är som störst i berört elnät.

    I slutet av rapporten presenteras resultaten för det som undersökts.

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    fulltext
  • 214.
    Ekstrand, Christian
    et al.
    Linnaeus University, Faculty of Technology, Department of Physics and Electrical Engineering.
    Mansori, Farsad
    Linnaeus University, Faculty of Technology, Department of Physics and Electrical Engineering.
    Stability Related Issues for High Wind Power Penetration: Exploring possibilities to enhance grid stability from synthetic inertia in a future scenario2020Independent thesis Advanced level (degree of Master (One Year)), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The future global energy transition favour renewables such as wind power, which is predicted to be one of the predominant sources harvesting abundant amounts of energy onwards. Consequently, causing several conventional synchronous generators to be decommissioned in a near future to achieve an overall reduction in greenhouse gases related to electricity generation.

    However, this evolution comes with new challenges regarding power system stability that could jeopardize the reliability of the grid as we today know it. Therefore, this thesis will examine how high penetrations of wind power are impacting each fundamental criterion regarding power system stability. For this purpose, are two different scenarios being carried out in Siemens PSS/E, representing a futuristic case as well as a present one. The simulation results themselves are being compared with analogies drawn from previous studies conducted within the field to determine if it can be improved.

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    Stability Related Issues for High Wind Power Penetration
  • 215.
    Ekström, Sebastian
    Linnaeus University, Faculty of Technology, Department of Physics and Electrical Engineering.
    Bärbar sensorhandske med force feedback för manövrering av en humanoid robothand -: Implementering med monterade sensorer och motorer för styrning och känsel2019Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The goal of this thesis was to create a sensors glove with force feedback feeling when operating a humanoid robot hand. The development covered multiple areas such as mechanics, electronics and programming. The final product gave the user control over three fingers of a humanoid robotic hand. In the case where the robotic hand comes in contact with an object the user's finger movement is limited according to the pressure the robotic hands fingers exposes the object to.

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    Bärbar sensorhandske med force feedback för manövrering av en humanoid robothand
  • 216.
    Eliassi, Sohran
    Linnaeus University, Faculty of Technology, Department of Physics and Electrical Engineering.
    Partiell Urladdning- Mätmetoder och detektering med fokus på HVDC- kablar2014Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Detta arbete behandlar mätmetoder för detektering av partiella urladdningar (kallad PD från engelska benämningen Partial Disharge) i HVAC- och HVDC- högspänningskablar. HVAC står för ”High Voltage Alternative Current” och HVDC står för ”High Voltage Direct Current”. När en viss hög spänningsnivå överskrids i kabeln uppstår olika typer av partiella urladdningar och dessa skadar kabelns isoleringsmaterial. PD- intensiteten ökar med tiden och om de tillåts fortlöpa under en längre tid kan de med tiden helt bryta ned isoleringsmaterialet vilket leder till ett fel. Mätmetoder måste föras fram och mätinstrument måste tas i bruk för att detekterapartiella urladdningar. Målet med detta är att lokalisera eventuella skador som orsakats av partiella urladdningar, uppskatta skadorna och förhindra en total nedbrytning genom övervakning.

    Ett av de viktigaste målen för industri samt forskning har varit möjligheten att kunna ta fram mätinstrument som kan detektera PD i kablar och klassificera (”bedöma”) vad det är för typer av partiella urladdningar som är aktiva i kablarna. I detta arbete redovisas hur klassificering av olika typer av partiella urladdningar går till för både HVDC- och HVAC- kablar.

    Vidare har en mätmetod för detektering av partiella urladdningar studerats teoretiskt och testats experimentellt. Metoden är välbeprövad och kallas ”den vandrande vågmetoden”. För detta uppdrag fanns det ingen möjlighet att mäta på högspänningskablar eftersom behörighet och skyddat miljö saknats. Mätmetoden har istället prövats på en RG58- koaxialkabel eftersom att koaxialkabelns karaktäristik är jämförbar med en högspänningskabels karaktäristik. En försöksmätning med en strömsensor har också utförts eftersom att dessa normalt används i praktiken för detektering av partiella urladdningar.

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  • 217.
    Emtlind, Johannes
    Linnaeus University, Faculty of Technology, Department of Physics and Electrical Engineering.
    Galvaniska strömmar mellan olika material i mark2014Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Strömmar ut från metall till elektrolyt orsakar korrosion vilket försvagar metallen och kan leda till sönderfall.

    Det finns sätt att skydda mot korrosion. Ett isolerande skikt kan läggas mellan metall och elektrolyt för att dämpa strömmen ut i elektrolyt. För att hindra att ström alls går ut i elektrolyt kan anod och katod sammankopplas metalliskt. Vissa ämnen som kallas inhibitorer kan hämma korrosionshastigheten när tillagda i rätt mängd. Kan också mota elektroner som vill ut med elektroner in.

    I uppsatsen undersöks läckströmmars beteende för olika marktyper, metaller och spänningar. 

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    fulltext
  • 218.
    Engström, Diana
    Linnaeus University, Faculty of Technology, Department of Physics and Electrical Engineering.
    Att styra säkerhet med siffror: En essä om (att se) gränser 2015Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Work, especially that in complex, dynamic workplaces, often requires subtle, local judgment with regard to timing of subtasks, relevance, importance, prioritization and so forth. Still, people in Nuclear Industry seem to think safety results from people just following procedures. In the wake of failure it can be tempting to introduce new procedures and an even stricter "rule following culture". None, or at least very little, attention is given to tacit knowledge and individual skills. I am aiming to highlight the inadequacy of putting too much trust in formalization and that reporting and trending of events will contribute to increased learning, an increased nuclear safety and an efficient operational experience. The ability to interpret a situation concrete depends on proven experience in similar situations, analogical thinking and tacit knowledge. In this essay I intend to problematize the introduction and use of so-called Corrective Action Program (CAP) and computerized reporting systems linked to CAP in the Nuclear Industry.

    What I found out is that the whole industry, from regulators to licensees, seems to be stuck in the idea that the scientific perspective on knowledge is the only "true" perspective. This leads to an exaggerated belief in that technology and formalized work processes and routines will create a safer business. The computerized reporting system will not, as the idea was from the beginning, contribute to increased nuclear safety since the reports is based on the trigger and not the underlying causes and in-depth analysis. Managing safety by numbers (incidents, error counts, safety threats, and safety culture indicators) is very practical but has its limitations. Error counts only uphold an illusion of rationality and control, but may offer neither real insight nor productive routes for progress on safety.

    The question is why the CAP, error counts and computerized reporting systems have had such a big impact in the nuclear industry? It rests after all, on too weak foundations. The answer is that the scientific perspective on knowledge is the dominating perspective. What people do not understand is that an excessive use of computerized systems and an increased formalization actually will create new risks when people lose their skills and ability to reflect and put more trust in the system than in themselves.

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  • 219.
    Ennals, Richard
    Linnaeus University, Faculty of Technology, Department of Physics and Electrical Engineering.
    Artificial stupidity2016In: AI & Society: The Journal of Human-Centred Systems and Machine Intelligence, ISSN 0951-5666, E-ISSN 1435-5655, Vol. 31, no 3, p. 431-432Article in journal (Other academic)
  • 220.
    Ennals, Richard
    Linnaeus University, Faculty of Technology, Department of Physics and Electrical Engineering. Univ Agder, Norway.
    Beyond the age of innocence (review of two books)2016In: AI & Society: The Journal of Human-Centred Systems and Machine Intelligence, ISSN 0951-5666, E-ISSN 1435-5655, Vol. 31, no 1, p. 127-128Article, book review (Other academic)
    Abstract [en]

    A Dangerous Master: How to Keep Technology from Slipping Beyond Our Control, Wendell Wallach, Basic Books, New York 2015, ISBN: 978-0-465-05862-4

    Money Machines: Electronic Financial Technologies, Distancing, and Responsibility in Global Finance, Mark Coeckelbergh, Ashgate, Farnham 2015, ISBN: 978-14724-4508-7

  • 221.
    Ennals, Richard
    Linnaeus University, Faculty of Technology, Department of Physics and Electrical Engineering.
    Björn Gustavsen: Democratic dialogue and development2017In: The Palgrave Handbook of Organizational Change Thinkers / [ed] David B. Szabla, William A. Pasmore, Mary A. Barnes, Asha N. Gipson, Cham: Palgrave Macmillan, 2017, p. 555-573Chapter in book (Other academic)
    Abstract [en]

    Björn Gustavsen, with an original professional background as a lawyer and judge in his native Norway, has had a formative role in organizational development processes in Norway, Sweden, Scandinavia, and the European Union over four decades. Following in the tradition of Norwegian working life research by Trist and Thorsrud, he has provided the conceptual framework and practical case studies which have driven major national and international programs. He has learned from different experience of organizational change in, for example, the USA and Japan, but he has identified a distinctive way forward for the European Union, where he has acted as a senior adviser. In contrast to conventional Taylorist top-down management and reliance on expert consultants, his approach has been bottom-up and concept driven, with a focus on empowering workers. With a commitment to long-term sustainable processes, he has emphasized the importance of capacity building and succession planning, highlighting development organizations. His approach to partnership and coalition building has enabled collaboration across sectors, in the cause of creating collaborative advantage. He has a distinctive fluent academic writing style, but spends most of his time engaged in the design and practice of development, and editing the work of younger colleagues. He has seen the role of academic journals and edited books in the development process, so has encouraged new publications, but without seeking to dominate. He took ideas of action research and case studies and applied them to national enterprise development programs, working with the labor market parties. This has resulted in a distinctive research and development culture. © Springer International Publishing AG 2017.

  • 222.
    Ennals, Richard
    Linnaeus University, Faculty of Technology, Department of Physics and Electrical Engineering.
    "Brexit for Beginners", or "The Young Gentlemen of Etona": Towards a script for Interactive Theatre with a Pantomime Final Act2018In: AI & Society: The Journal of Human-Centred Systems and Machine Intelligence, ISSN 0951-5666, E-ISSN 1435-5655, Vol. 33, no 4, p. 633-635Article in journal (Other academic)
  • 223.
    Ennals, Richard
    Linnaeus University, Faculty of Technology, Department of Physics and Electrical Engineering.
    Eight legs good, two legs bad? (review of three books)2018In: AI & Society: The Journal of Human-Centred Systems and Machine Intelligence, ISSN 0951-5666, E-ISSN 1435-5655, Vol. 33, no 4, p. 645-646Article, book review (Other academic)
    Abstract [en]

    Review of:

    1. Common Sense, The Turing Test and the Quest for Real AI Hector J Levesque Cambridge MA, The MIT Press 2017 ISBN:978-0-262-03604-7

    2. The Digital Mind: How Science is Redefining Humanity Arlindo Oliveira Cambridge MA, The MIT Press 2017 ISBN: 978-0-262-03603-0

    3. Other Minds: The Octopus and the Evolution of Intelligent Life Peter Godfrey-Smith London, William Collins 2017 ISBN: 978-0-00-822627-5

  • 224.
    Ennals, Richard
    Linnaeus University, Faculty of Technology, Department of Physics and Electrical Engineering.
    Histories and futures (review of four books)2016In: AI & Society: The Journal of Human-Centred Systems and Machine Intelligence, ISSN 0951-5666, E-ISSN 1435-5655, Vol. 31, no 1, p. 131-132Article, book review (Other academic)
    Abstract [en]

    The Second Machine Age: Work, Progress and Prosperity in a time of Brilliant Technologies, Erik Brynjolfsson and Andrew McAfee, WW Norton, New York 2014, ISBN978-0-393-23935-5

    The Computing Universe: A Journey through a Revo-lution, Tony Hey and Gyuri Papay, Cambridge University Press, Cambridge 2015, ISBN 978-0-521-15018-7

    Computation, Proof, Machine: Mathematics enters a New Age, Gilles Dowek, Cambridge University Press, Cambridge 2015, ISBN 978-0-521-13377-7

    Twitter: A Digital Socioscope, Eds. Yelena Mejova, Ingmar Weber and Michael W. Macy, Cambridge University Press, Cambridge 2015, ISBN 978-1-107-500007-5

  • 225.
    Ennals, Richard
    Linnaeus University, Faculty of Technology, Department of Physics and Electrical Engineering. Univ Agder,Norway.
    Ideas, context and action (review of two books)2016In: AI & Society: The Journal of Human-Centred Systems and Machine Intelligence, ISSN 0951-5666, E-ISSN 1435-5655, Vol. 31, no 1, p. 129-130Article, book review (Other academic)
    Abstract [en]

    Encyclopaedia of CSR (4 volumes). Idowu S.O., Capaldi N., Zu L., Das Gupta A. (eds.), Heidelberg, Springer 2013. ISBN 978364228035.

    Dictionary of CSR. Idowu S.O., Capaldi N., Fifka M.S., Zu L., Schmidpeter R. (eds.), Heidelberg, Springer 2015. ISBN 9783339105352.

  • 226.
    Ennals, Richard
    Linnaeus University, Faculty of Technology, Department of Physics and Electrical Engineering. Univ Agder, Norway.
    Johan Berglund: Why safety cultures degenerate and how to revive them2017In: AI & Society: The Journal of Human-Centred Systems and Machine Intelligence, ISSN 0951-5666, E-ISSN 1435-5655, Vol. 32, no 2, p. 293-294Article, book review (Other academic)
  • 227.
    Ennals, Richard
    Linnaeus University, Faculty of Technology, Department of Physics and Electrical Engineering.
    Thirty years on2016In: AI & Society: The Journal of Human-Centred Systems and Machine Intelligence, ISSN 0951-5666, E-ISSN 1435-5655, Vol. 31, no 2, p. 297-298Article in journal (Other academic)
  • 228.
    Ennals, Richard
    et al.
    Linnaeus University, Faculty of Technology, Department of Physics and Electrical Engineering. University of Agder, Norway;Kingston University, UK.
    Göranzon, Bo
    Linnaeus University, Faculty of Technology, Department of Physics and Electrical Engineering. KTH Royal Institute of Technology;Cambridge University, UK.
    Nelson, Björn
    Linnaeus University, Faculty of Technology, Department of Physics and Electrical Engineering.
    Alvunger, Daniel
    Linnaeus University, Faculty of Social Sciences, Department of Education.
    Dialogue, Skill and Tacit Knowledge: Practical Knowledge and Corporate Social Responsibility2016In: Cultural Roots of Sustainable Management: Practical Wisdom and Corporate Social Responsibility / [ed] André Habisch, René Schmidpeter, Switzerland: Springer, 2016, p. 153-163Chapter in book (Refereed)
    Abstract [en]

    This chapter explores work in the Skill and Technology tradition in Sweden, which links work and learning in a distinctive way, backed by a long intellectual tradition. There is a recognition of the limits of explicit knowledge, which is supported by computers. The key resource for organisations and individuals is Tacit Knowledge. Work in the field of practical knowledge has developed through cases, and reflection on Skill. Reflection and Dialogue provide the basis for a culture of Corporate Social Responsibility.

  • 229.
    Ennals, Richard
    et al.
    Linnaeus University, Faculty of Technology, Department of Physics and Electrical Engineering.
    Nelson, Björn
    Linnaeus University, Faculty of Technology, Department of Physics and Electrical Engineering.
    Ingwald, Anders
    Linnaeus University, Faculty of Technology, Department of Physics and Electrical Engineering.
    Johansson, Viktoria
    Linnaeus University, Faculty of Technology, Department of Physics and Electrical Engineering.
    Lagercrantz, Victor
    Linnaeus University, The University Administration.
    Coping with social learning: Social and economic change through engagement2018In: Coping with the future: Rethinking Assumptions for Society Business and Work / [ed] Hans Christian Garmann Johnsen, Halvor Holtskog and Richard Ennals, London & New York: Routledge, 2018, p. 187-200Chapter in book (Other academic)
  • 230.
    Eriksson, Emil
    et al.
    Linnaeus University, Faculty of Technology, Department of Physics and Electrical Engineering.
    Gustav, Eriksson
    Linnaeus University, Faculty of Technology, Department of Physics and Electrical Engineering.
    Analys och mätning av övertoner i batteriladdare: Filtrering med passiva och aktiva filter2021Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Arbetet utfördes med hjälp av Micropower groups i Växjö. För att få ett förståelse för hur Micropowers batteriladdare beter sig och hur stora övertoner de skapar. Då 5 kW laddaren ej klarade SS-EN IEC 61000-3-12[1] standarden, konstruerades det passiva filter för att reducera övertonerna. Det paralleldämpade filtret klarade att reducera dessa övertoner till rätt nivå.

    26 KW laddaren klarar standarden, men det lånades in ett elektroniskt filter av Comsys. Filtret testades för att reducera övertoner till den bästa nivån i standarden och hur många laddare filtret kan hantera. Efter detta gjordes det en enkel beräkning för att se hur stor ekonomisk vinst det är på att införskaffa ett filter istället för att bygga individuella filter för varje laddare. 

    Nyckelord: Batteriladdare, Filter, Övertoner, Passivt filter, Elektroniskt filter.

     

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  • 231.
    Evegren, Adam
    Linnaeus University, Faculty of Technology, Department of Physics and Electrical Engineering.
    Utveckling av återkopplad motormodul för styrning av mätantenn: En fallstudie hos företaget Combitech AB2018Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Syftet med föreliggande studie är att undersöka vilket motoralternativ som lämpar sig bäst för precis positionsstyrning av särskilda mätantenner, samt hur denna motor skall kunna drivas på ett funktionellt vis. Huvudresultatet som vill uppnås genom detta projekt är en generell motormodul kapabel att styra antennernas olika dimensioner utifrån användarens kommando genom seriell kommunikation från en PC. Studien har genomförts i samarbete med företaget Combitech AB.

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  • 232.
    Falk, Filip
    et al.
    Linnaeus University, Faculty of Technology, Department of Physics and Electrical Engineering.
    Axelsson, Rasmus
    Linnaeus University, Faculty of Technology, Department of Physics and Electrical Engineering.
    Styrning och kommunikation inom industri 4.0: Jämförelse av trådbunden och trådlös kommunikation mot industri 4.02021Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Detta arbete har gått ut på att jämföra olika tekniker för styrning av industriella maskiner och robotar. jämförelsen har gjorts mellan trådbunden och trådlös kommunikation där den trådbundna delen genomförts med en PLC och den trådlösa med Arduino enheter med WiFi och GSM funktionalitet. Jämförelsen har gjorts genom teoretiska jämförelser med värden tagna från bland annat litteratur och mätningar på fördröjning samt testning av funktionalitet,användarupplevelse etc.

    Arbetet gav ett resultat att trots många fördelar för den trådlösa tekniken kan den inte just nu uppnå den stabilitet och korta fördröjning som krävs för dagens automatiserade system utan är mer anpassad för andra implementeringar inom industrin. Dock går utvecklingen framåt och detta kan leda till en förändring av detta i framtiden.

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    Examensarbete
  • 233.
    Frank, Isak
    Linnaeus University, Faculty of Technology, Department of Physics and Electrical Engineering.
    CAN över DC-ledare vid batteriladdning2020Independent thesis Basic level (university diploma), 180 HE creditsStudent thesis
    Abstract [sv]

    Denna studie undersöker rimlighet samt för- och nackdelar med att låta CAN-kommunikation ske över DC-ledare mellan laddare och batteri istället för separat kablage. Detta gjordes genom att testa en vald lösning som fanns tillgänglig på marknaden. Tester bestod huvudsakligen av att logga datatrafik i olika testscenarion och sedan analysera denna.

    Alla tester kunder inte slutföras till följd av trasiga komponenter, dock pekadeinsamlad data på att fel som uppstår delvis är frekvensberoende till följd av oavsiktlig filtrering av signalen till följd av kondensatorer och induktorer kopplade mot DC-ledarna på laddar-sidan. Detta ledde till slutsatsen att tekniken bör kunna användas om alla systemets komponenter kan modifieras för att minimera inverkan.

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  • 234.
    Fransson, Emma
    Linnaeus University, Faculty of Technology, Department of Physics and Electrical Engineering. Linnaeus University, Faculty of Technology, Department of Computer Science.
    High energy gamma ray emission and multi-wavelength view of the AGN PKS 0537-4412017Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    This thesis describes the analysis of Very High Energy (VHE) emission from the Active Galactic Nucleus PKS 0537-441. It also aims to put the results in a wider context by implementing previous work done on this source. The data chosen for the analysis is provided by the Fermi-LAT satellite and covers the energy range between 300 MeV and 300 GeV. Initially a lightcurve of the received flux from the source was generated, containing data from August 2008 to April 2017, with a mean flux of 4∗10−8 photons per second per squared centimeter. The lightcurve contained sections of different flux intensities giving periods of special interest, such as a flaring period at August 2008 to August 2011, an enormous flare at April 2010 and a less active period between April 2013 - January 2016 that could be identified for further investigations. The differences in observed flux over time was tested and PKS 0537-441 was found to be a significantly variable source. Spectral Energy Distribution (SED) analysis was performed over both the entire period as well as over the selected subperiods and fitted against models using the tools provided by the Fermi Science Support Center (FSSC). The models used in the fitting was PowerLaw2, LogParabola and PLSuperExpCutoff and the best fit for the data was obtained from the PLSuperExpCutoff, except for the less intense period where the LogParabola gave the best fit. The result from the SED analysis was integrated with results from previous work done on the source, ranging over multiple wavelengths in order to get a SED which spanned over the entire electromagnetic spectrum. Finally, modeling of this multi wavelength SED was performed in order to obtain parameters for the physical processes involved in the creation of the radiation received from PKS 0537-441.

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  • 235.
    Franzén, Björn
    Linnaeus University, Faculty of Technology, Department of Physics and Electrical Engineering.
    Designing a brushed DC motor controller: Laying the framework for a lab experiment involving position control with current feedback2015Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    In order to provide the means to set up a control theory lab experiment involving position control of a brushed DC motor with current feedback, a pulse-width modulated motor controller was designed. The output voltage is controlled by an analog reference signal and the magnitude of the output current and voltage are measured and output. These inputs and outputs are connected to a DAQ I/O-unit such that the lab experiment can be implemented digitally. In addition, defining equations for the whole system were derived. Comparison between measurements and model showed it possible to use the current as feedback if low-pass filtered and the angular displacement controlled over a small angular interval.

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  • 236.
    Franzén, Emil
    et al.
    Linnaeus University, Faculty of Technology, Department of Physics and Electrical Engineering.
    Karlsson, Andreas
    Linnaeus University, Faculty of Technology, Department of computer science and media technology (CM).
    Utveckling av dynamiskt verktyg mot REST-API i C#2018Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    In February 2018 the students Andreas Karlsson and Emil Franzén contacted Danfoss Power Solutions in Älmhult, shortly after they were offered to perform a thesis. A thesis about developing an SDK in the programming language C# for Danfoss Power Solutions newly developed API, PLUS+1 System API 2.0. As a part of the thesis a mini service tool was to be created to show the powers of the SDK and then evaluate the SDK by letting a company perform a usability test. By the end of May an SDK was delivered written in C# along with a mini service tool for use in demonstration. But because of time issues there were no usability test performed.

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  • 237.
    Franzén, Mattias
    et al.
    Linnaeus University, Faculty of Technology, Department of Physics and Electrical Engineering.
    Nordh, Petter
    Linnaeus University, Faculty of Technology, Department of Physics and Electrical Engineering.
    Användarreplikerande robotarm med 11 frihetsgrader2021Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Målet med uppsatsen är att skapa en användarstyrd robotarm med många frihetsgrader. Ämnen som studeras är elektronik, reglerteknik, datateknik, samt 3D modellering. I rapporten tas det upp allt från teoretiska delar, till montering, samt testning. Den färdiga robotarmen har elva frihetsgrader och kan greppa och hantera lättareobjekt, med viss stabilitet.

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  • 238.
    Frederiksen, T.
    et al.
    Donostia Int Phys Ctr DIPC UPV EHU, San Sebastian 20018, Spain.
    Paulsson, Magnus
    Linnaeus University, Faculty of Technology, Department of Physics and Electrical Engineering. Toyama Univ, Grad Sch Sci & Engn, Div Nano & New Funct Mat Sci, Toyama 930855, Japan.
    Ueba, H.
    Toyama Univ, Grad Sch Sci & Engn, Div Nano & New Funct Mat Sci, Toyama 930855, Japan.
    Theory of action spectroscopy for single-molecule reactions induced by vibrational excitations with STM2014In: Physical Review B. Condensed Matter and Materials Physics, ISSN 1098-0121, E-ISSN 1550-235X, Vol. 89, no 3, p. 035427-Article in journal (Refereed)
    Abstract [en]

    A theory of action spectroscopy, i.e., a reaction rate or yield as a function of bias voltage, is presented for single-molecule reactions induced by the inelastic tunneling current with a scanning tunneling microscope. A formula for the reaction yield is derived using the adsorbate resonance model, which provides a versatile tool to analyze vibrationally mediated reactions of single adsorbates on conductive surfaces. This allows us to determine the energy quantum of the excited vibrational mode, the effective broadening of the vibrational density of states (as described by Gaussian or Lorentzian functions), and a prefactor characterizing the elementary process behind the reaction. The underlying approximations are critically discussed. We point out that observation of reaction yields at both bias voltage polarities can provide additional insight into the adsorbate density of states near the Fermi level. As an example, we apply the theory to the case of flip motion of a hydroxyl dimer (OD)(2) on Cu(110) which was experimentally observed by Kumagai et al. [Phys. Rev. B 79, 035423 (2009)]. In combination with density functional theory calculations for the vibrational modes, the vibrational damping due to electron-hole pair generation, and the potential energy landscape for the flip motion, a detailed microscopic picture for the switching process is established. This picture reveals that the predominant mechanism is excitation of the OD stretch modes which couple anharmonically to the low-energy frustrated rotation mode.

  • 239.
    From Björk, Susanne
    Linnaeus University, Faculty of Technology, Department of Physics and Electrical Engineering.
    Från Novis till Mästare: En berättelse om socialarbetares yrkeskunnande2013Independent thesis Advanced level (degree of Master (One Year)), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    To the world you may be one person, but to one person you may be the world

    These words sum up my account of social worker expertise. How does one become skillful―a master―in the profession? I answer this question by exploring how social worker proficiency can be developed and grow with the help and support of supervisors, clients and colleagues. Development through professional supervision and in the encounter with clients is an essential part of the work. I also discuss what it means to be new in the field (a novice) in relation to being experienced (a master). For the novice, rules and regulations and clear-cut advice may be necessary in everyday work as well as in supervisory sessions; for the more experienced, dialogue and reflection become increasingly important tools.

    For this work I have collected material from my own professional life as well as from other experienced colleagues. Using social workers’ own reflections along with the various situations and occurrences that arise in their work, I have tried to capture the complexity of many of the tasks and to understand how professionalism can be enhanced.

    My narrative contains reasoning on issues of trust, views of humanity and professional improvisation. I shed light on detachment vs. involvement with clients, practical hands-on knowledge and the importance of having been listened to. Might the ability to instigate trust be the most important tool in social work?

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    Från Novis till Mästare
  • 240.
    Galeano, Victor
    Linnaeus University, Faculty of Technology, Department of Physics and Electrical Engineering.
    Flipped Classroom och Digitala Materiel: En Karaktärisering av Tre Naturvetenskapliga Ämneslärares Användning av Digitala Hjälpmedel2018Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    IT- och IKT-kompetens utgör en stor del av såväl internationell som svensk utbildningsforskning och enda sedan 60-talet har regeringen gjort satsningar med ändamål att förbättra lärares och elevers kompetens inom dessa områden. Den internationella strävan är att läroplaner införlivar mål för förbättrad IT- och IKT-kompetens, för att förbereda elever inför en arbetsmarknad som alltmer kräver teknologiska kompetenser. I den svenska forskningen har det visat sig att användningen av IT i den svenska skolan har ökat märkbart de senaste åren. PISA-undersökningen har visat att Sverige har låga resultat i problemlösning och att dessa resultat samvarierar med hög användning av IT. Vidare kompetensutveckling behövs och lärare bör anpassa sin undervisning utefter de teknologiska verktygens närvaro i den svenska skolan. Flipped Classroom är en undervisningsmetodik som innebär en betydande omordning av aktiviteter i den klassiska undervisningen, med avseende på vad som sker i klassrummet och vad som sker utanför klassrummet. Vidare ämnar metodiken att tydligt integrera digitala materiel i undervisningen. Framtida forskning bör undersöka hur Flipped Classroom-lärare väljer att utforma deras videoföreläsningar och övriga datorbaserade instruktioner. Detta examensarbete söker finna svar på hur och i vilket syfte Flipped Clasroom-lärare i de naturvetenskapliga ämnena använder digitala materiel i sin flippade undervisning samt ge en överblick av dessa. Tre naturvetenskapliga ämneslärare som använder Flipped Classroom har intervjuats. Det är alltså intervjuerna som utgör den empiriska grunden för detta arbete. Vidare innefattar detta arbete en konstruktion av en lämplig modell för att karaktärisera Flipped Classroom-lärares användning av digitala materiel. Karaktäriseringen indikerar att övervägande del av de digitala materielen används för datorbaserad instruktion utanför klassrummet. Totalt sett utgör 57 % datorbaserad instruktion och 30 % elev-centrerade aktiviteter i klassrummet. Resterande 13 % består av digitala materiel som till övervägande del består i mjukvaror för automatisk rättning av prov. För de intervjuade lärarna gäller att övervägande del av samtliga materiel används för att förmedla det centrala innehållet i respektive kurser. Men individuella skillnader finns. Totalt sett så utgör ungefär 52 % av samtliga materiel, användingsområden som ämnar att elever antingen ska återge kunskap eller lagra den i långtidsminnet. Det visar sig också att större delen av dessa användningsområden samtidigt innebär omfattande förändringar av undervisningsmoment.

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  • 241.
    Garmann Johnsen, Hans Christian
    et al.
    University of Agder, Norway.
    Holtskog, Halvor
    Norwegian University of Science and Technology (NTNU), Norway.
    Ennals, Richard
    Linnaeus University, Faculty of Technology, Department of Physics and Electrical Engineering. University of Agder, Norway.
    Conclusion2018In: Coping with the future: Rethinking Assumptions for Society Business and Work / [ed] Hans Christian Garmann Johnsen, Halvor Holtskog and Richard Ennals, London & New York: Routledge, 2018, p. 258-263Chapter in book (Other academic)
    Abstract [en]

    This conclusion presents some closing thoughts on the concepts covered in the preceding chapters of this book. The book addresses the changes, that are likely to come and that will influence society, business and work. It discusses different ways of building knowledge about social and economic change. The book also discusses the special role of social science in providing valid knowledge for the future. It shows that the approach to the issues would be practical and organisational, methodological and philosophical. The innovation discourses in national debates, as well as in the European Union and international organisations, have provided arguments for increased globalisation and market-driven development. They assume that the past is a reliable guide to the future. However, the discourse has been insufficient in its handling of comprehensiveness and inter-relatedness of social and economic change. Those with a focus on technology may have neglected basic human issues; those who focus on sustainability often neglect social and political organisation.

  • 242.
    Garmann Johnsen, Hans Christian
    et al.
    University of Agder, Norway.
    Holtskog, HalvorNorwegian University of Science and Technology (NTNU), Norway.Ennals, RichardLinnaeus University, Faculty of Technology, Department of Physics and Electrical Engineering. University of Agder, Norway.
    Coping with the future: Rethinking assumptions for society, business and work2018Collection (editor) (Other academic)
    Abstract [en]

    Coping with the Future has been written in response to widespread international awareness that the future is not predictable. In political and economic terms, we are in unknown territory, with daily developments around Brexit and the Trump Presidency, and “Kodak moments” in business. On the other hand, business leaders demand certainty, which is not available. This book redefines the nature of modern business. In contrast to recent trends, it has a focus on human-centred manufacturing and on decision-making which goes beyond a focus on short-term profit. The liberal capitalism of the USA and the UK is not the only current variety of capitalism. Business is not just about managers, but requires participation and engagement by workers. Since the financial crash of 2008, there has been much talk about the need for fresh approaches to business, but little has changed. This book pulls together current research and practice and poses new questions based on case studies. There is no one simple best way, but an uncertain future can be addressed, drawing on diverse past experience and cases. The book addresses an intended audience in business and universities, including business schools, around the world. The debate takes a broader approach, involving research in the social sciences and approaches from philosophy. The world has always been unpredictable, but we have allowed ourselves to be comforted by convenient myths. It is time to wake up. 

  • 243.
    Garmann Johnsen, Hans Christian
    et al.
    University of Agder, Norway.
    Holtskog, Halvor
    Norwegian University of Science and Technology (NTNU), Norway.
    Ennals, Richard
    Linnaeus University, Faculty of Technology, Department of Physics and Electrical Engineering. University of Agder, Norway.
    Introduction: A disruptive world and ways of knowing2018In: Coping with the future: Rethinking Assumptions for Society Business and Work / [ed] Hans Christian Garmann Johnsen, Halvor Holtskog and Richard Ennals, London & New York: Routledge, 2018, p. 1-14Chapter in book (Other academic)
    Abstract [en]

    Coping with the future is about the ability to anticipate, prepare for, and handle disruptive changes. This chapter argues that there is a big difference between coping with a future within an existing order, compared with a future facing systemic change. It also argues that in any period of systemic change one has to choose direction, and some choices turn out to be better than others. Most people would like to see changes that represent progress but not changes that create fear or conflict or reduce welfare and peaceful social interaction. Social science is concerned with studying the society we live in, and it is part of this society and reality. Science in general, and social science especially, is in a double position when it is seen as part of social development. The nature of Gestalts is different in social science compared to natural science. The chapter also presents an overview of this book.

  • 244.
    Gas, Katarzyna
    et al.
    Polish Academy of Sciences, Poland.
    Sadowski, Janusz
    Linnaeus University, Faculty of Technology, Department of Physics and Electrical Engineering. Polish Academy of Sciences, Poland.
    Sawicki, Maciej
    Polish Academy of Sciences, Poland.
    Magnetic properties of wurtzite (Ga,Mn)As2021In: Journal of Magnetism and Magnetic Materials, ISSN 0304-8853, E-ISSN 1873-4766, Vol. 533, article id 168012Article in journal (Refereed)
    Abstract [en]

    Here we report on detailed studies of the magnetic properties of the wurtzite (Ga,Mn)As cylindrical shells. Ga0.94Mn0.06As shells have been grown by molecular beam epitaxy at low temperature as a part of multishell cylinders overgrown on wurtzite (Ga,In)As nanowires cores, synthesized on GaAs (111)B substrates. Our studies clearly indicate the presence of a low temperature ferromagnetic coupling, which despite a reasonably high Mn contents of 6% is limited only to below 30 K. A set of dedicated measurements shows that despite a high structural quality of the material the magnetic order has a granular form, which gives rise to the dynamical slowdown characteristic to blocked superparamagnets. The lack of the long range order has been assigned to a very low hole density, caused primarily by numerous compensation donors, arsenic antisites, formed in the material due to a specific geometry of the growth of the shells on the nanowire template. The associated electrostatic disorder has formed a patchwork of spontaneously magnetized (macrospin) and nonmagnetic (paramagnetic) volumes in the material. Using high field results it has been evaluated that the total volume taken by the macrospins constitute about 2/3 of the volume of the (Ga,Mn)As whereas in the remaining 1/3 only paramagnetic Mn ions reside. By establishing the number of the uncoupled ions the two contributions were separated. The Arrott plot method applied to the superparamagnetic part yielded the first experimental assessment of the magnitude of the spin-spin coupling temperature within the macrospins in (Ga,Mn)As, TC = 28 K. In a broader view our results constitute an important contribution to the still ongoing dispute on the true and the dominant form(s) of the magnetism in this model dilute ferromagnetic semiconductor.

  • 245.
    Gelineo, Alexandre
    Linnaeus University, Faculty of Technology, Department of Physics and Electrical Engineering.
    Elevers syn på inlärning och arbetsmetoder: Möjligheter för en didaktisk förändring2014Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
    Abstract [sv]

    Svenska elever deltar tillsammans med elever från andra länder i studier där deras kunskaper testas. Under en lång rad av år har man märkt att svenska elevers kunskaper sjunker.

    Syftet med denna studie är att undersöka svenska elevers syn på sin egen inlärning och syn på sina arbetsmetoder.

    Jag har intresserat mig för elever som deltar i Fysik A och Fysik B på gymnasiet och gör en kvantitativ analys av dessa elevers svar på en enkät.

    Genom att knyta an till konstruktivistiska teorier och motivationsteorier ser vi att det finns en teoretisk grund för att använda studievanor som redan är förankrade hos eleverna. Att arbeta i samklang med eleverna skulle kunna bidra positivt till elevernas inlärning. Generative learning är namnet på en sådan arbetsmetod som tar tillvara elevernas egnamaterialskapande.

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  • 246.
    Gimbal-Zofka, Yann
    Linnaeus University, Faculty of Technology, Department of Physics and Electrical Engineering.
    Development and study of luminescent bolometers for neutrino physics2017Independent thesis Advanced level (degree of Master (Two Years)), 30 credits / 45 HE creditsStudent thesis
    Abstract [en]

    This Master thesis aims at designing, assembling and operating a prototypal luminescentbolometer containing a candidate with high Q-value (116Cd and 100Mo)for the study of the neutrinoless double- decay. The crystal is scintillating (with 116CdWO4 and Li2MoO4 compounds). The prototype is designed according to a simple thermal model and cooled down to 18 mK.

    Data analysis of the 116CdWO4 crystal determines the energy resolution (intrinsicand in the ROI) and the alpha/beta discrimination power. It includes a full interpretation of the background energy spectrum in terms of environmental radioactivity and an evaluation of the crystal radiopurity by the detection of internal contamination of the detector.

    An evaluation of the potential of a future experiment based on the 116CdWO4developed prototype is performed, ascertaining the feasibility of large scale experiments to search for neutrinoless double beta decay. The use of the thermal model of the detector response to interpret its bolometric behaviour and the study of future optimizations of the detector performance concludes this project.

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  • 247.
    Girmazion, Mekonen
    Linnaeus University, Faculty of Technology, Department of Physics and Electrical Engineering.
    Jordpunktskontinuitet mellan exponerade delar i ett Ställverk2015Independent thesis Basic level (university diploma), 180 HE creditsStudent thesis
    Abstract [sv]

    Det här examensarbetet handlar om att ta fram nya utvecklings ide om att tillverka ett modern ställverk med mindre jordkablar, detta arbete gjordes på Holtab AB i Tingsryd. Syftet med detta är att beräkna resistansen genom att mata strömmen och mäta spänningen mellan de olika punkter/platser i ställverk och med fullständigt mätning och beräkning måste resistansen bli under 0.1 Ω för att godkänna standarden och tillverka ett ställverk utan att koppla jordförbindelsekabeln mellan jordningsskena och apparaten som använts innan.

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  • 248.
    Gluba, L.
    et al.
    Polish Acad Sci, Poland;Maria Curie Sklodowska Univ Lublin, Poland.
    Yastrubchak, O.
    Maria Curie Sklodowska Univ Lublin, Poland;Natl Acad Sci Ukraine, Ukraine.
    Domagala, J. Z.
    Polish Acad Sci, Poland.
    Jakiela, R.
    Polish Acad Sci, Poland.
    Andrearczyk, T.
    Polish Acad Sci, Poland.
    Zuk, J.
    Maria Curie Sklodowska Univ Lublin, Poland.
    Wosinski, T.
    Polish Acad Sci, Poland.
    Sadowski, Janusz
    Linnaeus University, Faculty of Technology, Department of Physics and Electrical Engineering. Polish Acad Sci, Poland;Lund University, Sweden.
    Sawicki, M.
    Polish Acad Sci, Poland.
    Band structure evolution and the origin of magnetism in (Ga,Mn) As: From paramagnetic through superparamagnetic to ferromagnetic phase2018In: Physical Review B, ISSN 2469-9950, E-ISSN 2469-9969, Vol. 97, no 11, article id 115201Article in journal (Refereed)
    Abstract [en]

    The high-spectral-resolution optical studies of the energy gap evolution, supplemented with electronic, magnetic, and structural characterization, show that the modification of the GaAs valence band caused by Mn incorporation occurs already for a very low Mn content, much lower than that required to support ferromagnetic spin-spin coupling in (Ga,Mn) As. Only for n-type (Ga,Mn) As with the Mn content below about 0.3% the Mn-related extended states are visible as a feature detached from the valence-band edge and partly occupied with electrons. The combined magnetic and low-temperature photoreflectance studies presented here indicate that the paramagnetic <-> ferromagnetic transformation in p-type (Ga,Mn) As takes place without imposing changes of the unitary character of the valence band with the Fermi level located therein. The whole process is rooted in the nanoscale fluctuations of the local (hole) density of states and the formation of a superparamagnetic-like state. The Fermi level in (Ga,Mn) As is coarsened by the carrier concentration of the itinerant valence band holes and further fine-tuned by the many-body interactions.

  • 249.
    Goerzen, Moritz A.
    et al.
    University of Kiel, Germany.
    von Malottki, Stephan
    University of Kiel, Germany;University of Iceland, Iceland;Dartmouth College, USA.
    Meyer, Sebastian
    University of Kiel, Germany;Nanomat/Q-mat/CESAM Université de Liège, Belgium.
    Bessarab, Pavel F.
    Linnaeus University, Faculty of Technology, Department of Physics and Electrical Engineering. University of Iceland, Iceland.
    Heinze, Stefan
    University of Kiel, Germany.
    Lifetime of coexisting sub-10 nm zero-field skyrmions and antiskyrmions2023In: npj Quantum Materials, E-ISSN 2397-4648, Vol. 8, no 1, article id 54Article in journal (Refereed)
    Abstract [en]

    Magnetic skyrmions have raised high hopes for future spintronic devices. For many applications, it would be of great advantage to have more than one metastable particle-like texture available. The coexistence of skyrmions and antiskyrmions has been proposed in inversion-symmetric magnets with exchange frustration. However, so far only model systems have been studied and the lifetime of coexisting metastable topological spin structures has not been obtained. Here, we predict that skyrmions and antiskyrmions with diameters below 10 nm can coexist at zero magnetic field in a Rh/Co bilayer on the Ir(111) surface—an experimentally feasible system. We show that the lifetimes of metastable skyrmions and antiskyrmions in the ferromagnetic ground state are above one hour for temperatures up to 75 and 48 K, respectively. The entropic contribution to the nucleation and annihilation rates differs for skyrmions and antiskyrmions. This opens the route to the thermally activated creation of coexisting skyrmions and antiskyrmions in frustrated magnets with Dzyaloshinskii–Moriya interaction.

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  • 250.
    Gooth, Johannes
    et al.
    University of Hamburg, Germany ; IBM Research-Zurich, Switzerland.
    Zierold, Robert
    University of Hamburg, Germany.
    Sergelius, Philip
    University of Hamburg, Germany.
    Hamdou, Bacel
    University of Hamburg, Germany.
    Garcia, Javier
    IFW Dresden, Germany.
    Damm, Christine
    IFW Dresden, Germany.
    Rellinghaus, Bernd
    IFW Dresden, Germany.
    Pettersson, Håkan Jan
    Lund University ; Halmstad University.
    Pertsova, Anna
    Linnaeus University, Faculty of Technology, Department of Physics and Electrical Engineering.
    Canali, Carlo M.
    Linnaeus University, Faculty of Technology, Department of Physics and Electrical Engineering.
    Borg, Mattias
    IBM Research-Zurich, Switzerland.
    Nielsch, Kornelius
    University of Hamburg, Germany ; IFW Dresden, Germany.
    Local Magnetic Suppression of Topological Surface States in Bi2Te3 Nanowires2016In: ACS Nano, ISSN 1936-0851, E-ISSN 1936-086X, Vol. 10, no 7, p. 7180-7188Article in journal (Refereed)
    Abstract [en]

    Locally induced, magnetic order on the surface of a topological insulator nanowire could enable room-temperature topological quantum devices. Here we report on the realization of selective magnetic control over topological surface states on a single facet of a rectangular Bi2Te3 nanowire via a magnetic insulating Fe3O4 substrate. Low-temperature magnetotransport studies provide evidence for local time-reversal symmetry breaking and for enhanced gapping of the interfacial 1D energy spectrum by perpendicular magnetic-field components, leaving the remaining nanowire facets unaffected. Our results open up great opportunities for development of dissipation-less electronics and spintronics.

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