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  • 1167701. Yngvesson Eriksson, Rebecka
    et al.
    Wiklund, Ida
    Pekplattan i förskolan: En intervjustudie bland verksamma pedagoger2014Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
  • 1167702.
    Yngvesson, Jimmie
    Linnaeus University, Faculty of Science and Engineering, School of Computer Science, Physics and Mathematics.
    Till  framtida utvecklare2011Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
  • 1167703.
    Yngvesson, Joel
    KTH, School of Architecture and the Built Environment (ABE), Architecture.
    Ex Situ: Displaying Crop Diversity2017Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    The archipelago of Svalbard just south of the North pole is the unlikely home to the largest collection of seeds in the world, stored in a vault located deep within the mountains. Having seen a great increase in tourism and scientifical research the past years, it is a telling image of the regions future, once a coal mining society at the end of the world.

    How can the importance of the vault and its contents be mediated to the public in a tangible and atmospheric fashion? Striving to be in a dialogue with regional architecture of the past, this project proposes a building te​lling the important story of seed diversity and the Svalbard Seed Vault.

  • 1167704.
    Yngvesson, Joel Olov
    KTH, School of Architecture and the Built Environment (ABE), Architecture.
    Urban Building i kvarteret Domherren2012Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Hur ser framtidens arbete ut, och hur utformas dess arbetsmiljö? En ökning i det mobila arbetet har medfört en förändring i hur vi traditionellt sett utnyttjar kontorslokaler, och var, när samt hur vi arbetar. En alternativ uppbyggnad av Arkitekturskolan på Östermalm blir den nya, gränsöverskridande platsen för den nya sortens mobila arbete, som kombinerar café, restaurang, arbetsplatser, verkstäder, skrivare, mötesrum m.m. till en syntes, och bildar en plats för arbetets alla skeenden, från enskilt arbete till slutproduktion.

  • 1167705.
    Yngvesson, Johan
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Energi och Bioekonomi, Förbrännings- och aerosolteknik.
    Benchmarking anaerobic digestion and pretreatment plants of MSW2013In: 8th conference on sustainable development of energy, water and enviroment systems - Digital Proceedings, 2013, , p. SDEWES2013-0486Conference paper (Refereed)
    Abstract [en]

    Marcus Olsson, Gunilla Henriksson, Martin Fransson, Emelie Persson

  • 1167706.
    Yngvesson, Johan
    University of Borås, School of Engineering.
    Experimental Design and Optimization of Hydrolysis of Paper for Biogas Production2011Independent thesis Advanced level (degree of Master (One Year))Student thesis
    Abstract [en]

    The waste production in Sweden and Europe is increasing each year. Swedish households throw away 2.7 million tonnes material annually and because of though waste legislations, most of this is recycled as material or energy. The Swedish goal to increase the amount of biologically treated food waste and also to increase the biogas production requires not only investments but research in this area. Increased biogas yield from anaerobically treated waste materials will be beneficial to reach the goals. About 45 % of the biological waste consists of lignocellulosic material. Lignocellulose is also the most abundant renewable material in the world which makes it very interesting for biogas production. Sweden is also a country were over 10 % of its total export value is generated from the forest industry. An industry which produces large amounts of waste streams. In this thesis work the author investigates how hydrolysis can increase the digestibility of industrial waste paper. The scope was to find an efficient pretreatment method of paper and determine which affecting factors levels are the most successful ones. A literature study was followed by a series of experiments in order to find the optimal parameters for pretreatment of an industrial waste paper with the goal to increase its digestibility for anaerobic biogas production. From the study three pretreatment methods for hydrolysis of paper were chosen and an experimental design was conducted. The methods were hot water, alkali and wet oxidation. The result of the treatment was evaluated by measuring the soluble chemical oxygen demand (sCOD) in the supernatant of each treated samples and then analyse the results using a statistical software program. The highest levels of dissolved organic materials was found in samples treated at 250 °C for 30 minutes and with 2 % additive concentration of NaOH. The result was 42 g/l from a suspension of dry milled paper tubes of 50 g/l. By using the results in an analysis of variance it was possible to determine that sodium hydroxide was the most significant factor for hydrolysation of paper, followed by temperature and then addition of hydrogen peroxide. The results also revealed that there are no interaction effects between the examined factors in any of the tested methods.

  • 1167707.
    Yngvesson, Johan
    et al.
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, SP – Sveriges Tekniska Forskningsinstitut / Energiteknik (ET).
    Holmgren, Magnus Andreas
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, SP – Sveriges Tekniska Forskningsinstitut / Energiteknik (ET).
    Mätmetod för att bestämma metanutsläpp från täckta biogödsellager2014Report (Refereed)
  • 1167708.
    Yngvesson, Johan
    et al.
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Energi och Bioekonomi, Förbrännings- och aerosolteknik.
    Niklasson, Fredrik
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Energi och Bioekonomi, Förbrännings- och aerosolteknik.
    Bäfver, Linda
    Residential Electrostatic Precipitator: Performance at efficient and poor combustion conditions2012Report (Refereed)
    Abstract [en]

    The performance of a pilot residential electrostatic precipitator R_ESP (Applied Plasma Physics AS), was investigated at laboratory. Measurements of TSP (Total Suspended Particles), content of organic and elemental carbon, and mass size distribution of particles upstream and downstream of ESP were performed. Values for PM1 (particles < 1 µm) were calculated from the particle size distributions. Concentrations and size distributions with respect to particle numbers were measured in separate tests. Gas concentrations, temperatures and boiler parameters were also measured. The TSP concentrations upstream of the R_ESP were varied in range of 15-390 mg/mN3. Up to concentrations of about 300 mg/mN3, the TSP-concentrations out from the ESP were less than 20 mg/mN3, which is well below the German emission limit for wood stoves. The removal efficiencies with respect to mass were about 87% at efficient combustion and 93% at poor combustion. Corresponding values with respect to number concentrations were about 97% at efficient combustion and almost 99% at poor combustion. The better performance at poor combustion may be explained by lower flue gas temperature, leading to longer residence time in the ESP. High removal efficiencies were also found with respect to particulate organic and elemental carbon.

  • 1167709.
    Yngvesson, Johan
    et al.
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Energi och Bioekonomi, Förbrännings- och aerosolteknik.
    Olsson, Marcus
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Energi och Bioekonomi, Klimatisering och installationsteknik.
    Henriksson, Gunilla
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Energi och Bioekonomi, Förbrännings- och aerosolteknik.
    Energy and cost effecient biogas production2013In: Proceedings of the International Anaerobic Digestion Symposium on "Dry Fermentatnio, Substrate treatment and Digestate treatment", 2013, , p. 341Conference paper (Refereed)
  • 1167710.
    Yngvesson, Johan
    et al.
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Energi och Bioekonomi, Förbrännings- och aerosolteknik.
    Rönnbäck, Marie
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Energi och Bioekonomi, Förbrännings- och aerosolteknik.
    Arkelöv, Olof
    Rökgasbrunn för minimering av stoft och sura komponenter, vidareutveckling2011Report (Refereed)
  • 1167711.
    Yngvesson, Johanna
    et al.
    Växjö University, Faculty of Mathematics/Science/Technology, School of Mathematics and Systems Engineering.
    Jönsson, Josefine
    Växjö University, Faculty of Mathematics/Science/Technology, School of Mathematics and Systems Engineering.
    Matematik ska engagera: Kommunikation i laboration2009Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
  • 1167712.
    Yngvesson, Linda
    Dalarna University, School of Education and Humanities, Social and Political Studies.
    ”FRIHET TILL VAD?”: Tankar kring nationell identitet hos tre generationer västberlinare2006Independent thesis Advanced level (degree of Master (Two Years))Student thesis
    Abstract [sv]

    Syftet med uppsatsen är att mer än ett decennium efter Berlinmurens fall jämföra om och hur den nationella identitetskänslan i ett enat Tyskland rotat sig hos sex före detta västberlinare från tre generationer från arbetarfamiljer. Kvalitativa intervjuer har använts som metod. Intervjuerna och uppsatsen i övrigt har präglats av Joakim Ekmans teori, vilken utgår från att historia, territorium, gemensam kultur och delade politiska värderingar krävs för en nationell identitetskänsla. Gemensamt för samtliga sex intervjuade är att de idag känner sig mer som tyskar än före detta västtyskar. Deras kunskap och intresse i den gemensamma historien skiljer sig stort såväl inom som mellan generationerna. Samtliga är överens om att murens vara eller icke vara inte har påverkat vardagslivet i större grad. Intresset för Östberlin har varit knappt. Samtliga gläder sig över att muren rivits, även om man inte är nöjd med resultatet i alla lägen. Alla utom en är överens om att det finns kulturella skillnader mellan de före detta öst- och västtyskarna. Man är dock inte överens om vad som skiljer dem åt och varför. Ingen utom en från den yngre generationen anser att man idag kämpar för gemensamma politiska värderingar, men att man borde jobba för att sträva åt samma håll.

  • 1167713.
    Yngvesson, Lisa
    et al.
    Jönköping University, School of Engineering, JTH, Civil Engineeering and Lighting Science.
    Adolfsson, Erik
    Jönköping University, School of Engineering, JTH, Civil Engineeering and Lighting Science.
    The impact of scale when using models of daylight analysis2018Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The study examines the issue of scale regarding models when analyzing daylight, which scale is the most representative of a real space. There have been previous studies done regarding scale model and daylight, however, they do not look at how the scale itself can affect the experience of daylight. The use of the architects’ already built scale model can be seen as valuable for light designers when evaluations and visualizing daylight in a real space. However, the use of the architect's scale model depends on its scale, hence why this study is being conducted. The aim of this study is to evaluate the effects the scale has on daylight visualization with scale models.

    This study began with conducting a small literature study regarding daylight, scale models, visual perception and practical consideration when using scale models. The method was designed thereafter. By choosing a real room to base the scale models on, three scales were chosen, 1:50, 1:20 and 1:10. Thereafter the questionnaire was designed by using the analyzing method PERCIFAL as a base.

    The result of the study showed the subject's answers regarding; light level, shadows, light distribution and specular reflections. As well as a question regarding which scale model the found most representative of the real room and why. The compiled data showed which scale model was the most representative of the real room. The results show a difference between the different scale models and a correlation to the real room is seen. In conclusion, the scale model can be used to estimate and visualize the daylight within a space. However, the scale must be regarded and looked at so the chosen scale can represent the real space, which allows for an easy view of the model.

  • 1167714.
    Yngvesson, Lovisa
    Halmstad University, School of Health and Welfare.
    "Vi behöver göra mer": En diskursanalys av svensk nyhetsrapportering om klimatet under en vårvecka 20192019Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Syfte och frågeställningar: Studien presenterar bilden av svensk klimatrapportering under en veckas tid. Syftet med studien är således att få en ökad förståelse för svensk klimatrapportering.

    Studien har följande övergripande frågeställning:

    - Hur ser bilden av klimatet ut i en svensk nyhetsvecka 2019?

    För att kunna besvara den huvudsakliga frågeställningen ställs följdfrågorna:

    - Vilka teman går att urskilja ur en veckas svensk medierapportering om klimatet?

    - På vilket sätt gestaltas nyheter om klimatet utifrån teorier om nyhetsvärdering?

    - Hur framställer nyhetsmedierna klimatproblem utifrån idéer om konstruktiv journalistik och hur påvisas lösningar till problemen?

    Metod och material: En diskursanalys genomförs på det valda materialet. Materialet för studien består av klimatrelaterade inslag och artiklar från Rapport, Tv4 Nyheterna, Dagens Nyheter, Svenska Dagbladet, Aftonbladet och Expressen under en veckas tid under våren 2019.

    Huvudresultat: Resultatet av studien visar på att en stor del av rapporteringen kring klimatet är präglat av områdena transport och ekonomi. Varför dessa teman är återkommande i en såstor del av materialet kan inte med säkerhet fastställas. Det kan dock bero på att både transport och ekonomi är breda ämnen med flera olika aspekter.

  • 1167715. Yngvesson, Marianne
    Kommunikation och interaktion mellan personal och brukare på ett boende för demenssjuka personer: en studie ur ett personalperspektiv.2005Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
  • 1167716.
    Yngvesson, Markus
    et al.
    Mälardalen University, School of Innovation, Design and Engineering.
    Andersson, Henrik
    Mälardalen University, School of Innovation, Design and Engineering.
    Biomanagement2008Independent thesis Basic level (degree of Bachelor), 10 points / 15 hpStudent thesis
    Abstract [en]

    The society is changing faster than ever and more and more business is actively seeking help with their organisation. The theory in business management of our time is making man and nature more and more distinct from each other, it celebrates the intellect and logical thinking but forgets about our biological legacy. This paper is arguments for a more natural way of management and compares mankind’s communication with other developed species communication with emphasis on business management. For a durable and long-term development of the society it takes a whole new way of thinking; If everyone is selfish, no one gets anything but if everyone gives everyone gets – to give is to receive.

    In order to connect the theory with the reality interviews and an exercise was carried out on a company in Mälardalen. The interviews were analyzed with the aid of concentrating sentences in to categories in order to survey the activity in the corporation. The exercises were carried out as a statement of the positive effect of cooperation and a giving instead of an egoistic way of acting.

    This paper is to be seen as a wake up call and inspiration for further research than as a psychological or scientific thesis.

  • 1167717.
    Yngvesson, Markus
    et al.
    University of Gävle, Faculty of Engineering and Sustainable Development, Department of Industrial Development, IT and Land Management, Industrial economics.
    Melbi, Marcus
    University of Gävle, Faculty of Engineering and Sustainable Development, Department of Industrial Development, IT and Land Management, Industrial economics.
    RFID for a higher value in a process flow2018Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Introduction: Today, effective flow is of great importance in companies in heavier industries to get the maximum capacity out of their resources. Automating their flows can prove extremely important to get the maximum capacity you capable of. RFID is a smart technology for achieving an automated flow built for the future. Importance of logistics is becoming increasingly important for competitive companies that want to create the greatest possible profitability. More developed processes in flow can be a way for companies to move towards becoming more efficient and competitive. RFID can be a way of working as technology to quickly and efficiently simplify processes while ensuring that information is read managed faster.Purpose: The purpose of the study is to create a broader knowledge of RFID as a technology and its opportunity to create value for and to improve the flow and processes of companies that choose to apply this tool within their business.Method: To achieve the objectives of the study and answer the purpose of this thesis project, observations have been made at a case company and interviews with carefully chosen personnel at the case company were made. This has since been critically reviewed against data collected in the theoretical reference framework. Theory has been critically reviewed in most databases and compared with several sources to ensure credibility. Interviews that belong to the qualitative data collection consist of varying interview questions that are available in the study. This is a general approach the authors have used to achieve the purpose of the study.Result: The result of this study was conducted through the qualitative survey conducted through the case company, where it was founded that the case company is manual in its processes and way of working. Based on data and previous research investigated it has been suggested that a more automated approach would be more optimal and create a higher value for a larger company in heavier industry.Conclusion: The study identifies and detects the challenges that manual a flow and processes have in comparison to more automated flow and processes when it comes to eliminate wastes that arise. RFID is a good and useful technology when it comes to reading different amounts of data in a fast and efficient way.

  • 1167718.
    Yngvesson, Mats
    KTH, Superseded Departments, Solid Mechanics.
    Fatigue crack growth under complex loading1999Licentiate thesis, comprehensive summary (Other scientific)
  • 1167719. Yngvesson, Nathalie
    Romantisme et réalité Étude de La Mare au Diable, La petite Fadette et Francois le Champi de George sand1999Independent thesis Advanced level (degree of Master (One Year))Student thesis
  • 1167720.
    Yngvesson, Oskar
    Örebro University, School of Medical Sciences.
    Antibiotic use for respiratory tract infections in children 0-5 years of age in Kronoberg County 2006-2014.2015Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
  • 1167721.
    Yngvesson, Oskar
    Örebro University, School of Medical Sciences.
    Antibiotic use for respiratory tract infections in children 0-5 years of age in Kronoberg County 2006-2014.2015Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
  • 1167722.
    Yngvesson, Oskar
    Örebro University, School of Medicine, Örebro University, Sweden.
    Treatment of Macular Detachment associated with Optic Disc Pit2014Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
  • 1167723.
    Yngvesson, Robert
    Blekinge Institute of Technology, Faculty of Engineering, Department of Spatial Planning.
    Promoting physical activities in urban landscapes: A case study of Rosenholm, Karlskrona, Sweden2014Independent thesis Advanced level (degree of Master (Two Years))Student thesis
    Abstract [en]

    Sedentary lifestyle means less normal physical activity, less fitness among the population at large. This may lead to lower health, increased risk of cardiac disease. Less fitness also influences the psychological state of mind, leading to lower self-esteem. To remedy this, more physical activity should be encouraged among the people. To these physical and psychological needs the fact that more and more people live or are in daily contact with cities is added, which means the urban landscapes play a role in motivating physical activity. Different urban landscapes affect the motivation in different ways. This thesis investigated how physical activity is affected by urban landscapes socially, environmentally, economically and by policies, and how to implement a multifunctional exercise area in Rosenholm, Karlskrona, Sweden. Methods such as literature review, interviews, site analyzes and case studies were made in order to get promote theories based on research to design an “Innovative Complete and Optimal Training-track” in Rosenholm together with a development group initiated by “Blekinge Health Arena”. Motivating physical activity can be promoted by measures belonging to the field of urban design, by taking physical, economic, social and cultural factors into account together with policies in all levels. Policymaking is an essential way to increase physical activities among the population and to affect the built environment, which is discussed in this thesis. In order to promote physical activities in urban areas there is no simple solution to apply in order to get results. There is no design to fit them all. Simply creating good opportunities to perform physical activity by means of urban landscapes cannot solve the fact that the public health is decreasing by lack of physical activity. This is as much, if not more, a matter of motivation and change in behavior. But in order to get motivation and to change behavior an environment offering opportunities and possibilities to perform physical activity and at the same time offers socializing is a good start. There are so many dimensions and aspects that need to be considered and are specific in each and every case. A design proposal was made in the Rosenholm case study where various aspects discussed in this thesis were considered displayed by maps, renderings and images.

  • 1167724.
    Yngvesson, Tina
    Umeå University, Faculty of Social Sciences, Department of Education.
    Att förstå föräldraengagemang i förskolan: En narrativ studie2019Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The Swedish preschool curriculum and policies place a heavy emphasis on establishing and maintaining long-lasting relationships between the preschool and the home. This engagement between home and preschool is considered central for child well-being and healthy development of the child. The central target of inquiry in this study was thus to investigate the child-, parent and teacher’s understanding of what parent engagement in Swedish preschools is, with particular emphasis on the child’s perspective. The importance of understanding children’s learning as embedded in the social, cultural and family contexts in which it occurs contributes to the overall consensus that children will, in a well-being-, development- and learning perspective, do better with parents who are actively engaged in their children’s pedagogical life. Thus, designing pathways in order to develop the communication between home and preschool is considered a significant factor in children’s developmental outcomes. Against this background, the thesis took its point of departure in the perspective of the child and applied the theoretical framework of the Bronfenbrenner Ecological Systems Theory focusing on the interaction between the developing child and the parent and teacher in the preschool context. The study assumed a transformative worldview and a narrative design was applied in order to determine how the participants, specifically the child, personally experience parent engagement. Narratives were collected through interviews, then assembled into a case-study highlighting the interconnectedness of the stories through a thematic analysis. Through identifying harmonies and contradictions in the stories, the thesis has investigated the construct of the child’s-, the parent’s- and the preschool teacher’s understanding of parent engagement in the Swedish preschool. From that perspective the thesis has identified where their stories align and where they contradict, thus broadening the academic debate in regard to how parents and teachers can better prepare themselves for the dialogues within the micro-societies that their children’s immediate world consists of

  • 1167725.
    Yngvén, Anna
    Mälardalen University, School of Health, Care and Social Welfare.
    Har sättet att resa betydelse för betraktarens uppfattning om en person?: En jämförelse mellan cyklist och bilist2014Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
  • 1167726.
    Yngwe, Fredrika
    Uppsala University, Disciplinary Domain of Humanities and Social Sciences, Faculty of Social Sciences, Department of Economics.
    Utsläpp och tillväxt – Den dödsdömda samvariationen: En studie om digitaliseringens påverkan på samvariationen mellan tillväxt och utsläpp2018Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Ekonomisk tillväxt och koldioxidutsläpp går globalt hand i hand i en samvariation som brådskande måste brytas. Samtidigt går länder idag igenom strukturomvandling från industribaserade till digitala samhällen. Frågan som studeras i denna uppsats är huruvida digitalisering kan minska utsläpp och påverka samvariationen mellan utsläpp och tillväxt. Studien utförs på paneldata om 28 EU-länder under åren 2014 – 2016 i en kvantitativ regressionsanalys, och finner i urvalet en positiv korrelation mellan digitalisering och utsläpp som antyder att ton koldioxidutsläpp per capita ökar med cirka 0,6% när digitaliseringsgrad ökar med 1 enhet. Digitaliseringen försvagar till marginell del det positiva sambandet mellan utsläpp och tillväxt som pekar på att när BNP ökar med 1% ökar ton koldioxidutsläpp per capita med cirka 0,2%. Uppkoppling och integrering av teknologi är digitaliseringsfaktorer som säkerställs ha en positiv korrelation med utsläpp i urvalet, och bör därför, tillsammans med total digitaliseringsgrad, studeras vidare för att potentiellt angripas miljöpolitiskt. 

  • 1167727.
    Yngwe, Therese
    Stockholm University, Faculty of Law, Department of Law.
    Offentligt testamentsregister: en undersökning om hur den testamentariska successionen kan bli mer rättssäker2018Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
  • 1167728.
    Ynner, Camilla
    et al.
    Halmstad University, School of Teacher Education (LUT).
    Wiberg, Ida
    Halmstad University, School of Teacher Education (LUT).
    Eget ansvar i skolans utbildning: En kvalitativ undersökning av elevers och lärares uppfattningar av elevens eget ansvar i skolans utbildning2011Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    A subject that is being discussed often these days is the question about the pupils own responsibility for and influence over his or hers education. Therefore, we wanted to study what taking responsibility for ones education is, according to teachers and pupils. We interviewed pupils between the ages of nine and fifteen, and asked them what taking responsibility for their own education meant to them. We also interviewed their teachers and asked them how they perceived that the pupils own responsibility-taking worked. We used informants from two different schools, a big school in a city and a small school located in the countryside. What we found out was that even though our informants worked in different manners, they perceived what taking responsibility meant in similar ways. The key words that we found that the informants used when describing responsibility-taking were time, autonomy and participation.

  • 1167729.
    Ynner, Patricia
    et al.
    Blekinge Institute of Technology, Faculty of Engineering, Department of Health.
    Eliasson, Anna
    Blekinge Institute of Technology, Faculty of Engineering, Department of Health.
    Hur patienter med psykossjukdomar upplever att vara inlagda inom den psykiatriska slutenvården: En innehållsanalys baserad på patografier2019Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Bakgrund: En psykossjukdom är ett tillstånd då verklighetsuppfattningen förändras med tillkommande symtom som vanföreställningar, hallucinationer samt förvirring. Vårdpersonal har generellt en sämre attityd mot patienter med psykossjukdomar och det finns begränsad med forskning om hur patienterna upplever detta.

    Syfte: Syftet med studien var att beskriva hur patienter med psykossjukdomar upplever att vara inlagda inom psykiatrisk slutenvård.

    Metod: En kvalitativ innehållsanalys med induktiv ansats baserad på fem patografier. Analysen inspirerades av Lundman och Hällgren Graneheims modell för innehållsanalys med meningsenheter, kondensering, koder, underkategorier och kategorier.

    Resultat: Analysen ledde fram till fyra kategorier och två underkategorier. Tydlig rollfördelning mellan vårdpersonal och patient, Bristen på information och förtroende, Negativa affekter och negativ tillvaro och Medmänsklighet från vårdpersonal med tillhörande underkategorier vikten av goda handlingar och bevarad värdighet och självbestämmande.

    Slutsats: Studien visade att patienterna hade delade upplevelser av att vara inlagda inom den psykiatriska slutenvården. De negativa upplevelserna var fler än de positiva. Det framkom dock ur de positiva upplevelserna att vårdpersonal som utgick från Joyce Travelbees human-to-human-relationship model, om än omedvetet, gjorde att patienterna och vårdpersonalen etablerade betydelsefulla vårdrelationer och att patienterna då fann en mening med att vara inlagda.

  • 1167730.
    Ynnerman, Anders
    et al.
    Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, Faculty of Science & Engineering. Linköping University, Center for Medical Image Science and Visualization (CMIV).
    Chapman, S C
    Ljung, Patric
    Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, Faculty of Science & Engineering.
    Andersson, Niclas
    Bifurcation to chaos in charged particle orbits in a magnetic reversal with shear field2002In: IEEE Transactions on Plasma Science, ISSN 0093-3813, E-ISSN 1939-9375, Vol. 30, no 1, p. 18-19Article in journal (Refereed)
    Abstract [en]

    Regular and stochastic behavior in single particle orbits in static magnetic reversals have wide application in laboratory and physical plasmas. In a simple magnetic reversal, the system has three degrees of freedom but only two global (exact) constants of the motion; the system is nonintegrable and the particle motion can, under certain conditions, exhibit chaotic behavior. Here, we consider the dynamics when a constant shear field is added. In this case, the form of the potential changes from quadratic to velocity dependent.We use numerically integrated trajectories to showthat¨the effect of the shear field is to break the symmetry of the system so that the topology of the invariant tori of regular orbits is changed. In this case, invariant tori take the form of nested Moebius strips in the presence of the shear field. The route to chaos is via bifurcation (period doubling) of the Moebius strip tori.

  • 1167731.
    Ynnerman, Anders
    et al.
    Linköping University, Department of Science and Technology, Visual Information Technology and Applications (VITA). Linköping University, The Institute of Technology.
    Chapman, S.C.
    Department of Physics, University of Warwick, Coventry CV4 7AL, United Kingdom.
    Ljung, Patric
    Linköping University, Department of Science and Technology, Visual Information Technology and Applications (VITA). Linköping University, The Institute of Technology.
    Andersson, N.
    Bifurcation to chaos in charged particle orbits in a magnetic reversal with shear field2002In: IEEE Transactions on Plasma Science, ISSN 0093-3813, E-ISSN 1939-9375, Vol. 30, no 1 I, p. 18-19Article in journal (Refereed)
    Abstract [en]

    Regular and stochastic behavior in single particle orbits in static magnetic reversals have wide application in laboratory and physical plasmas. In a simple magnetic reversal, the system has three degrees of freedom but only two global (exact) constants of the motion, the system is nonintegrable and the particle motion can, under certain conditions, exhibit chaotic behavior. Here, we consider the dynamics when a constant shear field is added. In this case, the form of the potential changes from quadratic to velocity dependent. We use numerically integrated trajectories to show that the effect of the shear field is to break the symmetry of the system so that the topology of the invariant tori of regular orbits is changed. In this case, invariant tori take the form of nested Moebius strips in the presence of the shear field. The route to chaos is via bifurcation (period doubling) of the Moebius strip tori.

  • 1167732.
    Ynnerman, Anders
    et al.
    Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, Faculty of Science & Engineering. Linköping University, Center for Medical Image Science and Visualization (CMIV).
    Löwgren, Jonas
    Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, Faculty of Science & Engineering.
    Tibell, Lena
    Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, Faculty of Educational Sciences.
    Exploranation: A New Science Communication Paradigm2018In: IEEE Computer Graphics and Applications, ISSN 0272-1716, E-ISSN 1558-1756, Vol. 38, no 3, p. 13-20Article in journal (Other academic)
    Abstract [en]

    Science communication is facing a paradigm shift, based on the convergence of exploratory and explanatory visualization. In this article, we coin the term exploranation to denote the way in which visualization methods from scientific exploration can be used to communicate results and how methods in explanatory visualization can enrich exploration.

  • 1167733.
    Ynnerman, Anders
    et al.
    Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, Faculty of Science & Engineering. Linköping University, Center for Medical Image Science and Visualization (CMIV). Norrkoping Visualizat Centre C, Sweden.
    Rydell, Thomas
    Interspectral AB, Sweden; Interact Institute Swedish ICT, Sweden.
    Antoine, Daniel
    British Museum, England; UCL, England.
    Hughes, David
    Interspectral AB, Sweden; Interact Institute Swedish ICT, Sweden.
    Persson, Anders
    Linköping University, Department of Medical and Health Sciences, Division of Radiological Sciences. Linköping University, Faculty of Medicine and Health Sciences. Region Östergötland, Center for Diagnostics, Department of Radiology in Linköping. Linköping University, Center for Medical Image Science and Visualization (CMIV).
    Ljung, Patric
    Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, Faculty of Science & Engineering. Norrkoping Visualizat Centre C, Sweden.
    Interactive Visualization of 3D Scanned Mummies at Public Venues2016In: Communications of the ACM, ISSN 0001-0782, E-ISSN 1557-7317, Vol. 59, no 12, p. 72-81Article in journal (Refereed)
    Abstract [en]

    BY COMBINING VISUALIZATION techniques with interactive multi-touch tables and intuitive user interfaces, visitors to museums and science centers can conduct self-guided tours of large volumetric image data. In an interactive learning experience, visitors become the explorers of otherwise invisible interiors of unique artifacts and subjects. Here, we take as our starting point the state of the art in scanning technologies, then discuss the latest research on high-quality interactive volume rendering and how it can be tailored to meet the specific demands

  • 1167734.
    Ynnerman, Anders
    et al.
    Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, Faculty of Science & Engineering. Linköping University, Center for Medical Image Science and Visualization (CMIV).
    Rydell, Thomas
    Persson, Anders
    Linköping University, Department of Medical and Health Sciences, Division of Radiological Sciences. Linköping University, Faculty of Medicine and Health Sciences. Linköping University, Center for Medical Image Science and Visualization (CMIV). Östergötlands Läns Landsting, Center for Diagnostics, Department of Radiology in Linköping.
    Ernvik, Aron
    Forsell, Camilla
    Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, Faculty of Science & Engineering.
    Ljung, Patric
    Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, Faculty of Science & Engineering.
    Lundström, Claes
    Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, Faculty of Science & Engineering. Linköping University, Center for Medical Image Science and Visualization (CMIV).
    Multi-Touch Table System for Medical Visualization2015In: Eurographics 2015: Dirk Bartz Prize, Eurographics - European Association for Computer Graphics, 2015Conference paper (Other academic)
    Abstract [en]

    Medical imaging plays a central role in a vast range of healthcare practices. While the usefulness of 3D visualizations is well known, the adoption of such technology has previously been limited in many medical areas. This paper, awarded the Dirk Bartz Prize for Visual Computing in Medicine 2015, describes the development of a medical multi-touch visualization table that successfully has reached its aim to bring 3D visualization to a wider clinical audience. The descriptions summarize the targeted clinical scenarios, the key characteristics of the system, and the user feedback obtained.

  • 1167735. Yochem, J
    et al.
    Tuck, S
    Umeå University, Faculty of Medicine, Umeå Centre for Molecular Pathogenesis (UCMP) (Faculty of Medicine).
    Greenwald, I
    Han, M
    A gp330/megalin-related protein is required in the major epidermis of Caenorhabditis elegans for completion of molting.1999In: Development, ISSN 0950-1991, Vol. 126, no 3, p. 597-606Article in journal (Refereed)
  • 1167736. Yoda, Hiroshi
    et al.
    Fujimura, Kazuki
    Takahashi, Hideyuki
    Munemura, Ikuko
    Uchimiya, Hirofumi
    Sano, Hiroshi
    Stockholm University, Faculty of Science, Department of Botany.
    Polyamines as a common source of hydrogen peroxide in host- and nonhost hypersensitive response during pathogen infection2009In: Plant Molecular Biology, ISSN 0167-4412, E-ISSN 1573-5028, Vol. 70, no 02-jan, p. 103-112Article in journal (Refereed)
    Abstract [en]

    The hypersensitive response (HR) is a powerful resistance system that plants have developed against pathogen attack. There are two major pathways for HR induction; one is through recognition of the pathogen by a specific host protein, and is known as the host HR. The other is through common biochemical changes upon infection-the nonhost HR. We previously demonstrated that hydrogen peroxide derived from polyamine degradation by polyamine oxidase triggers the typical host HR in tobacco plants upon infection with tobacco mosaic virus. However, it remains to be determined whether or not polyamines are involved in the nonhost HR in tobacco, and in the host HR in other plant species. When tobacco plants were infected with Pseudomonas cichorii, a representative nonhost pathogen, transcripts for six genes encoding enzymes for polyamine metabolism were simultaneously induced, and polyamines were accumulated in apoplasts. Hydrogen peroxide was concomitantly produced and hypersensitive cell death occurred at infected sites. Silencing of polyamine oxidase by the virus-induced gene silencing method resulted in suppression of hydrogen peroxide production and in disappearance of visible hypersensitive cell death with an increase in bacterial growth. Our results indicated that polyamines served as the source of hydrogen peroxide during the nonhost HR in tobacco plants. Further analysis revealed that polyamines were accumulated in apoplasts of Arabidopsis thaliana infected with Pseudomonas syringae, and of rice infected with Magnaporthe grisea, both causing the typical host HR. As in tobacco, it is conceivable that the same mechanism operates for nonhost HR in these plants. Our present observations thus suggested that polyamines are commonly utilized as the source of hydrogen peroxide during host- and nonhost HRs in higher plants.

  • 1167737.
    Yoder, Mikayla A.
    et al.
    Univ Illinois, Sch Chem Sci, Urbana, IL 61801 USA.;Univ Illinois, Frederick Seitz Mat Res Lab, Urbana, IL 61801 USA.;Univ Illinois, Dept Mat Sci & Engn, Urbana, IL 61801 USA..
    Yan, Zheng
    Univ Missouri, Dept Chem Engn, Columbia, MO 65211 USA.;Univ Missouri, Dept Mech & Aerosp Engn, Columbia, MO 65211 USA..
    Han, Mengdi
    Northwestern Univ, Ctr Biointegrated Elect, Evanston, IL 60208 USA..
    Rogers, John A.
    Univ Illinois, Frederick Seitz Mat Res Lab, Urbana, IL 61801 USA.;Univ Illinois, Dept Mat Sci & Engn, Urbana, IL 61801 USA.;Northwestern Univ, Ctr Biointegrated Elect, Evanston, IL 60208 USA..
    Nuzzo, Ralph G.
    KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Chemistry, Surface and Corrosion Science.
    Semiconductor Nanomembrane Materials for High-Performance Soft Electronic Devices2018In: Journal of the American Chemical Society, ISSN 0002-7863, E-ISSN 1520-5126, Vol. 140, no 29, p. 9001-9019Article, review/survey (Refereed)
    Abstract [en]

    The development of methods to synthesize and physically manipulate extremely thin, single-crystalline inorganic semiconductor materials, so-called nano membranes, has led to an almost explosive growth of research worldwide into uniquely enabled opportunities for their use in new "soft" and other unconventional form factors for high-performance electronics. The unique properties that nanomembranes afford, such as their flexibility and lightweight characteristics, allow them to be integrated into electronic and optoelectronic devices that, in turn, adopt these unique attributes. For example, nanomembrane devices are able to make conformal contact to curvilinear surfaces and manipulate strain to induce the self-assembly of various 3D nano/micro device architectures. Further, thin semiconductor materials (e.g., Si-nanomembranes, transition metal dichalcogenides, and phosphorene) are subject to the impacts of quantum and other size-dependent effects that in turn enable the manipulation of their bandgaps and the properties of electronic and optoelectronic devices fabricated from them. In this Perspective, nanomembrane synthesis techniques and exemplary applications of their use are examined. We specifically describe nanomembrane chemistry exploiting high-performance materials, along with precise/high-throughput techniques for their manipulation that exemplify their growing capacities to shape outcomes in technology. Prominent challenges in the chemistry of these materials are presented along with future directions that might guide the development of next generation nanomembrane-based devices.

  • 1167738.
    Yodphongsa, Say
    Karlstad University, Faculty of Health, Science and Technology (starting 2013).
    Förutsättningskontroll och nedbrytningstest på oljeförorenad mark: Preem 2, Karlstad2014Independent thesis Basic level (university diploma), 15 credits / 22,5 HE creditsStudent thesis
  • 1167739.
    Yodphongsa, Ying
    Karlstad University, Faculty of Arts and Social Sciences (starting 2013), Department of Educational Studies.
    Könsnormer i den thailändska förskolan: En undersökning om förskolepedagogers sociokulturella perspektiv och förhållningssätt kring flickor och pojkar i den thailändska förskolan.2017Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The purpose of this study is to increase the knowledge of how pedagogues treat girls and boys differently in Thailand and also to contribute to the knowledge about gender and gender norms in the preschools in Thailand.

    To answer my research questions, I travelled to the north of Thailand to visit two pre-schools. I have been using a qualitative study to collect information from teachers and have compiled my observations to compare theory with real practice. I also interviewed some Thai native language teachers in Sweden to expand the research material. The results show that the importance of education has increased for children in Thailand, which has given both girls and boys the same opportunity to attend school. The research also tells that pedagogues in Thailand are educated about gender and equality which shows in their reasoning about how to approach girls and boys with gender awareness. However, despite the gender sensitive reasoning it has through observation been disclosed that old norms are still a present issue when it comes to approaching girls and boys differently. 

  • 1167740. Yoeli, Michael
    et al.
    Pehrson, Björn
    RISE, Swedish ICT, SICS.
    Behavior-Preserving Reductions of Communicating System Nets1986Report (Refereed)
    Abstract [en]

    Among the various methods for the modeling of distributed systems that currently are available, the process algebra CCS and Petri nets with extensions are of particular interest. CCS contains the useful concept of synchronized communication. While the theory of CCS is based on a single concept of behavioral equivalence, a variety of such concepts could be incorporated into net theory. Particularly, a clear distinction can be made between the interleaving of concurrent actions and true concurrency. Net theory also provides a suitable basis for the investigation of structural proprties (eg. liveness). Furthermore, various reduction techniques applicable to nets compare favorably with the algebraic analysis methods of CCS. In view of these arguments, a CCS-oriented extension of the Petri net concept, called Communication System Nets, CS-nets, is introduced which incorporates a conditional action feature. Various behavior-preserving reduction techniques are demonstrated along with the applicability of CS-Nets to the specification and verification of distributed systems.

  • 1167741.
    Yoganathan, Laxsha
    Mid Sweden University, Faculty of Human Sciences, Department of Nursing Sciences.
    Patienters upplevelse av att leva med typ 2 diabetes: - En litteraturöversikt2018Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Bakgrund: År 2015 dog cirka 1,6 miljoner människor på grund av diabetes (World HealthOrganisation [WHO], 2017). Typ 2 diabetes är en stor dödsorsak i världen. De flesta som ärdrabbade av typ 2 diabetes behöver en god omvårdnad, stöd och kunskap.Syfte: Syftet var att beskriva patienters upplevelse av att leva med typ 2 diabetes.Metod: Studien är en litteraturöversikt. De vetenskapliga artiklarna valdes med hjälp avdatabaserna Pubmed samt Cinahl. Tretton kvalitativa artiklar utgör resultatet till denna studie.Resultat: Det framkom fyra teman; upplevelsen av oro, upplevelse av rädsla för komplikationersamt att hantera och acceptera typ 2 diabetes där kategorin stöd och kunskap från hälso- ochsjukvården delas in i positiva samt negativa upplevelser med hälso- och sjukvården.Slutsats: Denna litteraturöversikt påvisar att patienter får en omställning i livet i sambanddiagnosen typ 2 diabetes. Sjuksköterskor har därför en viktig uppgift med deras roll att informeraoch stötta patienter med typ 2 diabetes för att öka deras livskvalitet.

  • 1167742.
    Yogarajah, Pratheepan
    et al.
    School of Computing and Intelligent Systems, University of Ulster, UK.
    Condell, Joan
    School of Computing and Intelligent Systems, University of Ulster, UK.
    Curran, Kevin
    School of Computing and Intelligent Systems, University of Ulster, UK.
    Cheddad, Abbas
    Umeå University, Faculty of Medicine, Umeå Centre for Molecular Medicine (UCMM).
    McKevit, Paul
    School of Computing and Intelligent Systems, University of Ulster, UK.
    An Improved Self-embedding Algorithm: Digital Content Protection against Compression Attacks in Digital Watermarking2010In: Image Processing and Communications Challenges 2 / [ed] Ryszard S. Choraś, Springer Berlin/Heidelberg, 2010, p. 59-66Chapter in book (Other academic)
    Abstract [en]

    Lossy compression attacks in digital watermarking are one of the major issues in digital watermarking. Cheddad et al. proposed a robust secured self-embedding method which is resistant to a certain amount of JPEG compression. Our experimental results show that the self-embedding method is resistant to JPEG compression attacks and not resistant to other lossy compression attacks such as Block Truncation Coding (BTC) and Singular Value Decomposition (SVD). Therefore we improved Cheddad et al's. method to give better protection against BTC and SVD compression attacks.

  • 1167743.
    Yogesh, Mitesh
    Linköping University, Department of Electrical Engineering, Electronics System. Linköping University, The Institute of Technology.
    A Self-compensated, Bandwidth Tracking Semi-digital PLL Design in 65nm CMOS Technol-ogy2012Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    In a conventional charge-pump based PLL design, the loop parameters such as the band-width, jitter performance, charge-pump current, pull-in range among others govern the ar-chitecture and implementation details of the PLL. Different loop parameter specificationschange with a change in the reference frequency and inmost cases, requires careful re-designof some of the PLL blocks. This thesis describes the implementation of a semi-digital PLLfor high bandwidth applications, which is self-compensated, low-power and exhibits band-width tracking for all reference frequencies between 40 MHz and 1.6 GHz in 65nm CMOStechnology.This design can be used for a wide range of reference frequencies without redesigning anyblock. The bandwidth can be fixed to some fraction of the reference frequency during designtime. In this thesis, the PLL is designed to make the bandwidth track 5% of the referencefrequency. Since this PLL is self-compensated, the PLL performance and the bandwidthremains same over PVT corners.

  • 1167744. Yogev, Daniel
    et al.
    Eiken, Ola
    KTH, School of Technology and Health (STH), Environmental Physiology.
    Pisot, Rado
    Biolo, Gianni
    di Prampero, Pietro
    Narici, Marco
    Mekjavic, Igor B.
    Effect of 21 days of horizontal bed rest on behavioural thermoregulation2010In: European Journal of Applied Physiology, ISSN 1439-6319, E-ISSN 1439-6327, Vol. 108, no 2, p. 281-288Article in journal (Refereed)
    Abstract [en]

    The present study investigated the effect of 21 days of horizontal bed rest on cutaneous cold and warm sensitivity, and on behavioural temperature regulation. Healthy male subjects (N = 10) were accommodated in a hospital ward for the duration of the study and were under 24-h medical care. All activities (eating, drinking, hygiene, etc.) were conducted in the horizontal position. On the 1st and 22nd day of bed rest, cutaneous temperature sensitivity was tested by applying cold and warm stimuli of different magnitudes to the volar region of the forearm via a Peltier element thermode. Behavioural thermoregulation was assessed by having the subjects regulate the temperature of the water within a water-perfused suit (T (wps)) they were wearing. A control unit established a sinusoidal change in T (wps), such that it varied from 27 to 42A degrees C. The subjects could alter the direction of the change of T (wps), when they perceived it as thermally uncomfortable. The magnitude of the oscillations towards the end of the trial was assumed to represent the upper and lower boundaries of the thermal comfort zone. The cutaneous threshold for detecting cold stimulus decreased (P < 0.05) from 1.6 (1.0)A degrees C on day 1 to 1.0 (0.3)A degrees C on day 22. No effect was observed on the ability to detect warm stimuli or on the regulated T (wps). We conclude that although cold sensitivity increased after bed rest, it was not of sufficient magnitude to cause any alteration in behavioural thermoregulatory responses.

  • 1167745.
    Yogi, Hari Nath
    Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences.
    Eco-tourism and Sustainability: Opportunities and Challengesin the Case of Nepal2010Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Ecotourism is very burning issue and one of the fastest growing sectors in current worldtourism industry. Especially in many developing countries like Nepal are trying to useecotourism as a tool to achieve sustainable development. The paper mainly considers currentopportunities of ecotourism in Nepal where tourism is one of the fastest expanding industrieswhich has been leaving various negative impacts in different areas. It is aiming to study aboutthe current state of ecotourism in Nepal. The paper also attempt to give critical analysis ofecotourism impacts and challenges in the case of Nepal and point out some recommendationsfor better practice of ecotourism. The paper tries to answer the following question: Isecotourism opportunity or challenge in Nepal? How is ecotourism practised in the country?Can ecotourism be a beneficial tool for sustainable development of the country? How canecotourism be very effective means of development and conservation?Nepal has abundance of opportunities of ecotourism industry. But its effective practice andimplementation is not promising due to lack of commitment of governmental policy andplanning strategy with combination of integrated conservation and development. Thus to runecotourism project properly, principles and theories of ecotourism must be considered a majorbase while make its policy and planning. Policy must be integrative, collaborative andcomprehensive to achieve real outcome of ecotourism by realizing importance ofenvironmental, social and economic imperatives.

     

  • 1167746.
    Yogi, Rutambhara
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy.
    Hermansson, Lars
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy.
    Ruber, Roger
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Design of the RF Distribution System for the ESS Spoke Linac2013Report (Other academic)
    Abstract [en]

    Based on the known boundary conditions of cost, ionizing radiation and space, we propose a combination of coaxial lines and waveguides for the RF distribution system of the spoke linac. At full power level (400 kW peak) 6-1/8" coaxial lines are used in low radiation level zones while WR2300 half-height waveguide are used in high radiation level zones. At lower power levels and in low radiation zones 3-1/8" and 7/8" coaxial lines are used.

  • 1167747.
    Yogi, Rutambhara
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Rydberg, Anders
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Solid State Electronics.
    Dancila, Dragos
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Solid State Electronics.
    Gajewski, Konrad
    Uppsala University, The Svedberg Laboratory.
    Hermansson, Lars
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Noor, Masih
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Wedberg, Rolf
    Uppsala University, The Svedberg Laboratory.
    Santiago-Kern, Rocio
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Ekelöf, Tord
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Lofnes, Tor
    Uppsala University, The Svedberg Laboratory.
    Ziemann, Volker
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Goryashko, Vitaly
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Ruber, R J M Y
    CERN, Geneve, Schweiz.
    Uppsala high power test stand for ESS spoke cavities2012In: Proceedings of LINAC2012, 2012, p. 711-713Conference paper (Refereed)
  • 1167748.
    Yogi, Rutambhara
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Wedberg, Rolf
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Goryashko, Vitaliy
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Santiago-Kern, Rocio
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Hermansson, Lars
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Lofnes, Tor
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Gajewski, Konrad
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Dancila, Dragos
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Solid State Electronics.
    Rydberg, Anders
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Solid State Electronics.
    Ziemann, Volker
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Ekelöf, Tord
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Ruber, Roger
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Selection of RF Power Source and Distribution Scheme at 352 MHz for Spoke Cavities at ESS and FREIA2012Report (Other academic)
    Abstract [en]

    The report describes selection of RF power source and distribution scheme for spoke cavities at ESS and FREIA.  The European Spallation Source (ESS) is the world’s most powerful neutron source, which contain 36 superconducting spoke cavities at 352MHz and provide power of 0.5MW to the beam. The baseline for the RF system is a point-to-point generation and distribution  from a single source to a single accelerating cavity.The RF system that has to generate this power and distribute it to the accelerating cavities, is a main resource driver for linear accelerators in form of investment, operation and maintenance. Therefore the technical alternatives are compared to minimize capital and running cost of the accelerator, without compromising its reliability. At 352 MHz and 350 kW RF power output, tetrode amplifiers are selected because of their advantages of being cheap, reliable, simple and efficient as compared to the other RF power amplifiers. The tetrodes, due to their low gain, need a pre-driver. The solid state amplifier technology is selected as a pre-driver due to its simplicity, reliability and efficiency. Half height aluminum WR2300 wave guides shall be used for RF distribution. This solution makes it possible to discard the circulator from the RF distribution chain, thus improving system efficiency.

  • 1167749.
    Yohai, L.
    et al.
    UNMdP, CONICET, INTEMA, Div Ceram, B7608FDQ, Mar Del Plata, Buenos Aires, Argentina.
    Giraldo Mejía, Hugo
    Procaccini, R.
    Pellice, S.
    Laxman Kunjali, Karthik
    KTH, School of Engineering Sciences (SCI), Applied Physics.
    Dutta, Joydeep
    KTH, School of Engineering Sciences (SCI), Applied Physics.
    Uheida, Abdusalam
    KTH, School of Engineering Sciences (SCI), Applied Physics.
    Nanocomposite functionalized membranes based on silica nanoparticles oss-linked to electrospun nanofibrous support for arsenic(v) sorption from contaminated underground water2019In: RSC Advances, ISSN 2046-2069, E-ISSN 2046-2069, Vol. 9, no 15, p. 8280-8289Article in journal (Refereed)
    Abstract [en]

    Nanocomposite functionalized membranes were synthesized using surface functionalized mesoporous silica nanoparticles (MCM-NH2 or MCM-PEI) cross-linked to a modified polyacrylonitrile (mPAN) nanofibrous substrate for the removal of 1 mg L-1 of As(V); a concentration much higher than what has been reported for underground water in Argentina. Adsorption studies were carried out in batch mode at pH 8 with nanoparticles in colloidal form, as well as the nanoparticles supported on the modified PAN membranes (mPAN/MCM-NH2 and mPAN/MCM-PEI). Results indicate a twenty-fold improvement in As(V) adsorption with supported nanoparticles (nanocomposite membranes) as opposed to their colloidal form. The adsorption efficiency could be further enhanced by modifying the nanocomposite membrane surface with Fe3+ (mPAN/MCM-NH2-Fe3+ and mPAN/MCM-PEI-Fe3+) which resulted in more than 95% arsenic being removed within the first 15 minutes and a specific arsenic adsorption capacity of 4.61 mg g(-1) and 5.89 mg g(-1) for mPAN/MCM-NH2-Fe3+ and mPAN/MCM-PEI-Fe3+ nanocomposite membranes, respectively. The adsorption characteristics were observed to follow a pseudo-first order behavior. The results suggest that the synthesized materials are excellent for quick and efficient reduction of As(V) concentrations below the WHO guidelines and show promise for future applications.

  • 1167750.
    Yohan, Noh
    et al.
    Waseda University.
    Wang, C.
    Waseda University.
    Tokumoto, M.
    Waseda University.
    Solis, Jorge
    Karlstad University, Faculty of Technology and Science, Department of Physics and Electrical Engineering.
    Ishii, H.
    Waseda University.
    Takanishi, Atsuo
    Waseda University.
    Development of Airway Management Training System WKA-4: Provide Useful Feedback of Trainee Performance to Trainee during Airway Management2012In: Complex Medical Engineering (CME), 2012 ICME International Conference on, IEEE Press, 2012Conference paper (Refereed)
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