umu.sePublications
3456789 251 - 300 of 465
rss atomLink to result list
Permanent link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
  • Häggström, Andreas
    Umeå University, Faculty of Science and Technology, Department of Applied Physics and Electronics.
    Fjärrvärmeburen kyla2017Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The purpose of this project has been to describe and compare different methods of airborne cooling from an economic long-term perspective to compare the profitability of investments. The heat-driven cooling methods of desiccant cooling and absorption cooling were compared with conventional compressor cooling as well as cold water cooling from the urban water supply network. The aim of the project is to find most economically sustainable alternative of cooling for the specific building, car dealer Bilmetro’s new premises in Borlänge.

    Maximum cooling effect and the cooling required in the building for one year has been calculated, thereafter the above methods of cooling was compared in a life cycle cost analysis.  Calculations and sizing of the air handling units and associated component ware performed with the computer program IV Produkt Design G305, based on indoor and outdoor climate data, cooling and heating requirements and also the characteristics of the ventilation system.

    The compressor driven cooling was the long-term most profitable cooling method based to the assumptions made for the investment, energy and power costs. The heat-driven cooling methods showed to have the lowest operating cost when only consideration for energy costs was taken.

    There are still benefits with heat-driven cooling because of the large heat surplus in the combined heat and power plants during the summer period which is a consequence of electricity production, even though the option with electric compressor cooling hade the lowest long-term costs in this case.

  • Sarwary, Mariam
    Umeå University, Faculty of Medicine, Department of Pharmacology and Clinical Neuroscience, Pharmacology.
    Comparison of cognitive decline medications of Alzheimer´s disease: Efficacy and safety of Donepezil, Galantamine, Rivastigmine and Memantine2017Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
  • Matsson, Robin
    Umeå University, Faculty of Science and Technology, Department of Applied Physics and Electronics.
    Pinchanalys av det integrerade massa- och pappersbruket i Obbola2017Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    The aim of this thesis is to investigate possibilities to reduce primary steam consumption of the integrated pulp and paper mill in Obbola. For this purpose, a pinch analysis has been performed. The thesis has been carried out on site and necessary data for the analysis was produced mainly using the sensors installed for controlling the process. Based on the data, a representation of the heat exchanges at the mill was obtained and from this emerges an understanding of how optimized the heat exchange is.

    From the analysis, it was found that the energy savings potential amounts to 7 MW, which corresponds to 6% of present steam consumption of approximately 112 MW. One of the identified pinch violations was the flue gases in the recovery boiler used to preheat combustion air and process ventilation when it can be used to meet a thermal demand at higher temperatures or potentially to generate steam, the latter has not been investigated. Steam preheating of air to the paper dryer, steam preheating of water that is used to thaw logs and steam that is used in some of the process ventilations were also among the identified violations.

    Possible measures to optimize heat exchange and eliminate pinch violations have been investigated. These include flashing of paper mill condensate to replace the live steam in the air preheaters to the paper dryer and replace this thermal energy with secondary heat in the feed water treatment plant. As well as using part of the heat from the flue gas cooling system to preheat feed water.

    Increasing the operational temperature in the water treatment plant turned out to be possible regardless of whether a flash is introduced or not. The savings with contra without the flash would amount to 1.13 MW and 0.85 MW, respectively, and the net heat savings of a reconstruction is only 0.28 MW. The heat that can be released from the flue gas cooling system corresponds to 0.46 MW and is expected to be higher in the summer when heat necessity in other ends of the system decreases.

    To suggest optimization of heat exchanges at the mill, it was also investigated how much excess of warm and hot water was that present in the secondary heating system. The investigation showed that if the temperature in the warm water tank would be regulated, an excess of hot water would be sufficiently large to provide secondary heat to the optimization measures discussed and to provide for all ventilations currently using live steam. In all cases profitability should be investigated and for the case of any ventilation consideration should be given to distance from a secondary heating source and if there is a glycol circuit present or not. 

  • Skarin, Jakob
    Umeå University, Faculty of Science and Technology, Department of Applied Physics and Electronics.
    Bottenutskov i vattenkraftsdammar: Möjligheter, risker och strömningsmekaniska utmaningar2017Independent thesis Advanced level (professional degree), 300 HE creditsStudent thesis
    Abstract [en]

    The dam in a hydroelectric power station serves to divert water to the station’s turbines, and to allow for energy storage and power balancing. When the flow in the river is high or when the energy producing parts of the facility are inoperative, water needs to be discharged from the reservoir. This is done with outlets. In Sweden, most outlets are near the surface, but in some cases bottom outlets are used. Commonly, these outlets were used during the construction of the dam to divert water and have been unused since then. The purpose of this project was to investigate the possibility to recommission bottom outlets in hydropower dams where they are existent but not in use, to increase dam safety.

    The first part of the report contains a summary of theoretical problems with bottom outlets, based on industry experiences and literature. The second part presents the results of a case study of a specific facility, Båtfors hydroelectric power station. Calculations have been made, both by hand and with computational fluid dynamics, to identify possibilities and problems.

    Several theoretical problems have been identified, including: erosion, cavitation, insufficient aeration, debris, and problems with closing the outlet gates.

    The current discharge capacity for Båtfors power station was estimated by hand to slightly over 900 m3/s at the normal reservoir water level, which is consistent with the documentation of the facility. For each of the two bottom outlets, the discharge capacity was calculated to around 225 m3/s with the gate fully open (2.4 m). The values calculated by hand were compared to simulated ones for different gate openings and a certain difference (around 30–40 %) was noted. No simulation results could be obtained with the gate fully opened due to convergence issues.

    The movement of air in the bottom outlets of Båtfors were studied by simulations. When the gate was opened to a small degree, 0.4 and 0.8 m, air could be supplied from the downstream opening of the outlet conduit which was impossible when the gate was opened 1.2 m. This may cause problems if sufficient aeration cannot be achieved through openings in the outlet ceiling.

    The risk of cavitation in Båtfors was investigated by comparing the simulated minimum pressure in the outlet with the saturation pressure of water at 20 °C. It was determined that cavitation likely won’t be an issue at this facility, which conforms with literature.

    It was concluded that several issues can occur when using bottom outlets, but also that several opportunities exist. These outlets can be used to increase the discharge capacity and drawdown range of the facility, as emergency outlets, and to enable lowering of the reservoir water level. The lattermost can furthermore not be achieved by other means.

  • Wallert, John
    et al.
    Lissaker, Claudia
    Madison, Guy
    Umeå University, Faculty of Social Sciences, Department of Psychology.
    Held, Claes
    Olsson, Erik
    Young adulthood cognitive ability predicts statin adherence in middle-aged men after first myocardial infarction: A Swedish National Registry study2017In: European Journal of Preventive Cardiology, ISSN 2047-4873, E-ISSN 2047-4881, Vol. 24, no 6, 639-646 p.Article in journal (Refereed)
    Abstract [en]

    Background: Cognitive ability (CA) is positively related to later health, health literacy, health behaviours and longevity. Accordingly, a lower CA is expected to be associated with poorer adherence to medication. We investigated the long-term role of CA in adherence to prescribed statins in male patients after a first myocardial infarction (MI). Methods: CA was estimated at 18-20 years of age from Military Conscript Register data for first MI male patients (<= 60 years) and was related to the one- and two-year post-MI statin adherence on average 30 years later. Background and clinical data were retrieved through register linkage with the unselected national quality register SWEDEHEART for acute coronary events (Register of Information and Knowledge about Swedish Heart Intensive Care Admissions) and secondary prevention (Secondary Prevention after Heart Intensive Care Admission). Previous and present statin prescription data were obtained from the Prescribed Drug Register and adherence was calculated as >= 80% of prescribed dispensations assuming standard dosage. Logistic regression was used to estimate crude and adjusted associations. The primary analyses used 2613 complete cases and imputing incomplete cases rendered a sample of 4061 cases for use in secondary (replicated) analyses. Results: One standard deviation increase in CA was positively associated with both one-year (OR 1.15 (CI 1.01-1.31), P< 0.05) and two-year (OR 1.14 (CI 1.02-1.27), P< 0.05) adherence to prescribed statins. Only smoking attenuated the CA-adherence association after adjustment for a range of > 20 covariates. Imputed and complete case analyses yielded very similar results. Conclusions: CA estimated on average 30 years earlier in young adulthood is a risk indicator for statin adherence in first MI male patients aged <= 60 years. Future research should include older and female patients and more socioeconomic variables.

  • Lindgren, Jonathan
    Umeå University, Faculty of Science and Technology, Department of Mathematics and Mathematical Statistics.
    Modeling credit risk for an SME loan portfolio: An Error Correction Model approach2017Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Sedan den globala finanskrisen 2008 har flera stora regelverk införts för att säkerställa att banker hanterar risker på sunt sätt. Bland dessa regelverk är Basel II som infört kapitalkrav för kreditrisk som baseras på Sannolikhet för Fallissemang och Förlust Givet Fallissemang. Basel II Advanced Internal-Based Approach ger banker möjligheten att skatta dessa riskmått för enskilda portföljer och göra interna kreditriskvärderingar. I överensstämmelse med Advanced Internal-Based-rating undersöker denna uppsats användningen av en Error Correction Model för modellering av Sannolikhet för Fallissemang. En modell som visat sin styrka inom stresstestning. Vidare implementeras en funktion för Förlust Givet Fallissemang som binder samman Sannolikhet för Fallissemang och Förlust Givet Fallissemang med systematisk risk.

    Error Correction Modellen modellerar Sannolikhet för Fallissemang av en SME-portfölj från en av de "fyra stora" bankerna i Sverige. Modellen utvärderas och stresstestas med Europeiska Bankmyndighetens  stresstestscenario 2016  och analyseras, med lovande resultat.

  • Melin, Mikael
    Umeå University, Faculty of Science and Technology, Department of Applied Physics and Electronics.
    Konserveringsmetoder mot korrosion på vattensidan av hetvatten pannor: Preservation methods against corrosion at the waterside of hot water boilers2017Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
    Abstract [sv]

    Rapporten redovisar en utredning av konserveringsmetoder för vattensidan under stilleståndsperioder av ett värmeverk bestående av fem hetvattenpannor med ett gemensamt ångnät. Syftet var att utvärdera olika metoder för att motverka korrosion då pannorna inte är i drift. Konserveringsmetoderna som utreddes och jämfördes internt var konservering med en kvävgaskudde, ångkudde, torrläggning och en kemisk lösning. Att utreda metoderna innebar att uppskatta dess kostnad ekonomiskt genom att beräkna en årskostnad. För att besvara hur effektivt deras skydd mot korrosion är användes litteraturens referenser och teoretiska samband för att uppskatta syrehalten i matarvattnet. För att kunna göra en realistisk jämförelse mellan metoderna har den avgivna effekten för värmeverkets pannor under driftåret 2016 använts som en grund för beräkningarna. Årskostnaderna från konserveringsmetoderna är från 2016 års driftdata av värmeverket. En kvävgaskudde med en renhet av 99,999 % kan resultera i en syrehalt av 9,6 ppb för matarvattnet och har en total årskostnad av 77 300 SEK. En ångkudde har potentialen att bevara vattnet i princip syrefritt och har en total årskostnad av 809 000 SEK med en extern elpanna för ångproduktion. Att torrlägga pannorna är bara möjligt under vissa perioder av året dock skulle en total årskostnad av eldriften för att hålla pannorna torra motsvara en kostnad av 17 500 SEK. Metoden med en kemisk lösning hade en totalårskostnad av 1 640 000 SEK. Baserat på tillgänglig information och utförda antaganden är slutsatsen att värmeverket ifråga rekommenderas att upphöra med en kemisk konserveringsmetod och övergå till en kvävgaskudde som konserveringsmetod mot korrosion då pannorna inte är i drift.

  • Sellgren, Marc
    Umeå University, Faculty of Science and Technology, Department of Applied Physics and Electronics.
    Utveckling av plogklaff till Ålös snöröjningsredskap2017Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    This thesis work has been carried out for Ålö, a manufacturer of front loaders and implements for these. One of their implements, whose purpose is snow clearing, is equipped with hydraulically adjustable flaps that can be folded backwards and used as plows. However, they do not fill this task satisfactorily as snow tends to fall down behind them. A triangular gap between the flaps and the ground is also formed during plowing. This leaves a string of snow behind, aside from the snowmass already falling down behind the flaps.

    The goal for this project was to develop a plow that solves the aforementioned problems by replacing the right side flap on the bucket. The development was initiated with a study of reports, existing plows, contact with users and determining existing constraints. This has since provided the basis for a series of concepts, of which the most promising ones were joined to a prototype. Force calculations based on the load scenario that occurs during plowing have been used to find appropriate fasteners and create boundary conditions for a finite element analysis. The finite element analysis has then been used to estimate the number of cycles with maximum load the plow can be subjected to before it succumbs to fatigue failure.

    Force calculations showed that the pressure limiter for the hydraulic cylinder opens even before maximum load is reached. Despite this, finite element analysis and force calculations for fasteners were still based on the condition that maximum load is achieved momentarily to produce convervative results. Under this condition, the load on fasteners differs only ca 7-10 % between finite element analysis and calculations made by hand. All calculations are within the span for the fasteners proof strength. Fatigue calculations showed that the number of cycles the plow can handle with maximum load amounts to approximately 346 000. This refers to areas of interest and thus does not include parts already evaluated in the original flap. Welds, which usually dictate minimum strength in situations like these, have not seen any fatigue evaluations, but will instead be addressed while testing the prototype.

    The prototype meets the set goals and production documentation in the form of 3D-CAD models and 2D drawings (including weldment drawings) have been delivered. A physical prototype is also ordered and will be manufactured by Vännäs Verkstads AB, scheduled delivery date is 2017-06-08. It will be evaluated during the winter of 2017/2018.

  • Lundberg, Veronica
    et al.
    Umeå University, Faculty of Medicine, Department of Clinical Sciences, Paediatrics.
    Eriksson, Catharina
    Umeå University, Faculty of Medicine, Department of Clinical Sciences, Paediatrics.
    Health-related quality of life among Swedish children with Juvenile Idiopathic Arthritis: parent-child discrepancies, gender differences and comparison with a European cohort2017In: Pediatric Rheumatology, ISSN 1546-0096, E-ISSN 1546-0096, Vol. 15, 26Article in journal (Refereed)
    Abstract [en]

    Background: This study investigates gender differences in self-reports and between parent and child reports in Healthrelated Quality of Life (HRQOL), measured with disease-specific and generic instruments for chronic disease. Comparison of HRQOL results in this Juvenile Idiopathic Arthritis (JIA) sample to a European cohort of children with JIA and one of children with other health conditions are also made. Methods: Fifty-three children with juvenile idiopathic arthritis (JIA), aged 8-18 years, and their parents completed the condition-specific DISABKIDS for JIA, and the DISABKIDS generic instrument for chronic conditions (DCGM-37) in a cross-sectional study. European reference data were used for comparison of child and parental reports. Results: Child self-reports in DCGM-37 and DISABKIDS for JIA showed no gender differences. Parental and child reports of the child's HRQOL differed only in DCGM-37; this was among girls who scored their independence (p = 0.03), physical limitation (p = 0.01), social exclusion (p = 0.03), emotions (p < 0.01), and general transformed score (p < 0.01) higher than did their parents. Our sample of children with JIA reported more physical limitation compared to samples of European children with JIA (p = 0.01), European children with chronic conditions (p < 0.01), and their parents (p = 0. 01 and p < 0.01). The Swedish children reported more problem with understanding compared to the European JIA sample (p = 0.03). Swedish parents perceived their children's independence significantly lower than did the European parents of JIA children (p < 0.01), as well as European parents of children with chronic conditions (p = 0.03). The Swedish parents also perceived their children to have significantly lower social inclusion (p < 0.05) and general transformed score (p = 0.04), in comparison to European parents of children with chronic conditions. Conclusions: Parent-child differences in assessment of quality of life depend on the HRQOL instrument used, especially among girls. In comparison to European cohorts, our sample of children with JIA experienced more physical limitations and less understanding.

  • Borrás Pérez, Maria Victoria
    et al.
    Kriström, Berit
    Umeå University, Faculty of Medicine, Department of Clinical Sciences, Paediatrics.
    Romer, Tomasz
    Walczak, Mieczyslaw
    Höbel, Nadja
    Zabransky, Markus
    Ten years of clinical experience with biosimilar human growth hormone: a review of safety data2017In: Drug Design, Development and Therapy, ISSN 1177-8881, E-ISSN 1177-8881, Vol. 11, 1497-1503 p.Article, review/survey (Refereed)
    Abstract [en]

    Safety concerns for recombinant human growth hormone (rhGH) treatments include impact on cancer risk, impact on glucose homeostasis, and the formation of antibodies to endogenous/exogenous GH. Omnitrope (R) (biosimilar rhGH) was approved by the European Medicines Agency in 2006, with approval granted on the basis of comparable quality, safety, and efficacy to the reference medicine (Genotropin (R)). Additional concerns that may exist in relation to biosimilar rhGH include safety in indications granted on the basis of extrapolation and the impact of changing to biosimilar rhGH from other rhGH treatments. A substantial data set is available to fully understand the safety profile of biosimilar rhGH, which includes data from its clinical development studies and 10 years of post-approval experience. As of June 2016, 106,941,419 patient days (292,790 patient-years) experience has been gathered for biosimilar rhGH. Based on the available data, there have been no unexpected or unique adverse events related to biosimilar rhGH treatment. There is no increased risk of cancer, adverse glucose homeostasis, or immunogenic response with biosimilar rhGH compared with the reference medicine and other rhGH products. The immunogenicity of biosimilar rhGH is also similar to that of the reference and other rhGH products. Physicians should be reassured that rhGH products have a good safety record when used for approved indications and at recommended doses, and that the safety profile of biosimilar rhGH is in keeping with that of other rhGH products.

  • Utterström, Tommy
    Umeå University, Faculty of Medicine, Department of Pharmacology and Clinical Neuroscience, Pharmacology.
    Antikoagulationsbehandling vid förmaksflimmer: En studie av den nya generationens antikoagulantia i jämförelse med warfarin2017Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
  • Cooper, Helen M.
    et al.
    Yang, Yang
    Ylikallio, Emil
    Khairullin, Rafil
    Umeå University, Faculty of Medicine, Department of Medical Biochemistry and Biophysics. Institute of Fundamental Medicine and Biology, Kazan (Volga Region) Federal University, Kazan, Russia.
    Woldegebriel, Rosa
    Lin, Kai-Lan
    Euro, Liliya
    Palin, Eino
    Wolf, Alexander
    Trokovic, Ras
    Isohanni, Pirjo
    Kaakkola, Seppo
    Auranen, Mari
    Lönnqvist, Tuula
    Wanrooij, Sjoerd
    Tyynismaa, Henna
    ATPase-deficient mitochondrial inner membrane protein ATAD3A disturbs mitochondrial dynamics in dominant hereditary spastic paraplegia2017In: Human Molecular Genetics, ISSN 0964-6906, E-ISSN 1460-2083, Vol. 26, no 8, 1432-1443 p.Article in journal (Refereed)
    Abstract [en]

    De novo mutations in ATAD3A (ATPase family AAA-domain containing protein 3A) were recently found to cause a neurological syndrome with developmental delay, hypotonia, spasticity, optic atrophy, axonal neuropathy, and hypertrophic cardiomyopathy. Using whole-exome sequencing, we identified a dominantly inherited heterozygous variant c.1064G > A (p.G355D) in ATAD3A in a mother presenting with hereditary spastic paraplegia (HSP) and axonal neuropathy and her son with dyskinetic cerebral palsy, both with disease onset in childhood. HSP is a clinically and genetically heterogeneous disorder of the upper motor neurons. Symptoms beginning in early childhood may resemble spastic cerebral palsy. The function of ATAD3A, a mitochondrial inner membrane AAA ATPase, is yet undefined. AAA ATPases form hexameric rings, which are catalytically dependent on the co-operation of the subunits. The dominant-negative patient mutation affects the Walker A motif, which is responsible for ATP binding in the AAA module of ATAD3A, and we show that the recombinant mutant ATAD3A protein has a markedly reduced ATPase activity. We further show that overexpression of the mutant ATAD3A fragments the mitochondrial network and induces lysosome mass. Similarly, we observed altered dynamics of the mitochondrial network and increased lysosomes in patient fibroblasts and neurons derived through differentiation of patient-specific induced pluripotent stem cells. These alterations were verified in patient fibroblasts to associate with upregulated basal autophagy through mTOR inactivation, resembling starvation. Mutations in ATAD3A can thus be dominantly inherited and underlie variable neurological phenotypes, including HSP, with intrafamiliar variability. This finding extends the group of mitochondrial inner membrane AAA proteins associated with spasticity.

  • Hussein, Wourood
    Umeå University, Faculty of Medicine, Department of Pharmacology and Clinical Neuroscience, Pharmacology.
    Glukossänkande läkemedelseffekt på hjärtinfarkt och stroke hos patienter med typ 2-diabetes2017Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
  • Ventorp, Filip
    et al.
    Bay-Richter, Cecilie
    Nagendra, Analise Sauro
    Janelidze, Shorena
    Sjödahl Matsson, Viktor
    Lipton, Jack
    Nordström, Ulrika
    Umeå University, Faculty of Medicine, Department of Pharmacology and Clinical Neuroscience.
    Westrin, Åsa
    Brundin, Patrik
    Brundin, Lena
    Exendin-4 Treatment Improves LPS-Induced Depressive-Like Behavior Without Affecting ProInflammatory Cytokines2017In: Journal of Parkinson's Disease, ISSN 1877-7171, E-ISSN 1877-718X, Vol. 7, no 2, 263-273 p.Article in journal (Refereed)
    Abstract [en]

    Background: Exendin-4 is a peptide agonist of the glucagon-like peptide-1 (GLP-1) receptor, currently in clinical trials as a potential disease-modifying therapy for Parkinson's disease. In light of this, it is important to understand potential modes of action of exendin-4 in the brain. Exendin-4 is neuroprotective and has been proposed to be directly anti-inflammatory, and that this is one way it reduces neurodegeneration. However, prior studies have focused on animal models involving both neurodegeneration and inflammation, therefore, it is also possible that the observed decreased inflammation is secondary to reduced neurodegeneration. Objective: To investigate whether exendin-4 directly reduces inflammation in the brain following an insult that involves neuroinflammation but not neurodegeneration, namely systemic administration of lipopolysaccharide (LPS). Methods: Rats were administered LPS systemically and were treated with either 0.5 mu g/kg exendin-4 or saline vehicle injections over 5 days. Behavior was evaluated with forced swim test. We assayed TNF-alpha and IL-1 beta levels in cerebrospinal fluid and cytokine mRNA expression in striatal, hippocampal and cortical tissues using qPCR. We determined brain monoamines using high-performance liquid chromatography. Finally, we isolated primary brain microglia from rats and measured cytokine production after exendin-4 treatment and LPS stimulation. Results: Exendin-4 treatment did not affect cytokine mRNA expression in brain, cytokine levels in cerebrospinal fluid or cytokine production from cultured microglia, although there was a trend towards increased striatal dopamine. Importantly, exendin-4 significantly prevented depressive-like behavior at 24 hours after LPS injection, indicating that the drug engaged a target in the brain. Depressive-like behavior was associated with altered dopamine turnover in the striatum. Conclusion: We did not detect any anti-inflammatory effects of exendin-4. In previous studies exploring the effects of exendin-4 on brain insults involving neurodegeneration, observations of reduced inflammation might have been secondary to mitigation of neuronal death. Our results indicate that the effects of exendin-4 on behavior may be due to effects on dopamine synthesis or metabolism.

  • Hellström, Gustav
    et al.
    Umeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences.
    Magnhagen, Carin
    Balancing past and present: how experience influences boldness over time in Eurasian perch2017In: Current Zoology, ISSN 1674-5507, Vol. 63, no 2, 159-164 p.Article in journal (Refereed)
    Abstract [en]

    Adapting to fluctuating predation conditions is a challenge for prey. By learning through experience, animals may adjust their anti-predator behavior to better reflect current predation risk. Although many studies show experience of predation to alter prey behavior, little is known about how prey rely on such experience over time. By comparing boldness over different temporal scales between individuals of Eurasian perch, either experienced or naive of predators, we examine how risk is traded based on past and present experience. Differences in predator exposure during the first year of life were found to lead to differences in risk-taking behavior, even after the perch been kept in a predator-free environment for 9 months. However, the response to a potential predator was quickly readjusted after increased experience of current conditions. The results highlight how prey have to balance past experiences of predators against current threat levels.

  • Bosco, Cecilia
    et al.
    Garmo, Hans
    Adolfsson, Jan
    Stattin, Pär
    Umeå University, Faculty of Medicine, Department of Surgical and Perioperative Sciences, Urology and Andrology. Department of Surgical Sciences, Uppsala University, Uppsala, Sweden.
    Holmberg, Lars
    Nilsson, Per
    Gunnlaugsson, Adalsteinn
    Widmark, Anders
    Umeå University, Faculty of Medicine, Department of Radiation Sciences, Oncology.
    Van Hemelrijck, Mieke
    Prostate Cancer Radiation Therapy and Risk of Thromboembolic Events2017In: International Journal of Radiation Oncology, Biology, Physics, ISSN 0360-3016, E-ISSN 1879-355X, Vol. 97, no 5, 1026-1031 p.Article in journal (Refereed)
    Abstract [en]

    Purpose: To investigate the risk of thromboembolic disease (TED) after radiation therapy (RT) with curative intent for prostate cancer (PCa). Patients and Methods: We identified all men who received RT as curative treatment (n=9410) and grouped according to external beam RT (EBRT) or brachytherapy (BT). By comparing with an age-and county-matched comparison cohort of PCa-free men (n = 46,826), we investigated risk of TED after RT using Cox proportional hazard regression models. The model was adjusted for tumor characteristics, demographics, comorbidities, PCa treatments, and known risk factors of TED, such as recent surgery and disease progression. Results: Between 2006 and 2013, 6232 men with PCa received EBRT, and 3178 underwent BT. A statistically significant association was found between EBRT and BT and risk of pulmonary embolism in the crude analysis. However, upon adjusting for known TED risk factors these associations disappeared. No significant associations were found between BT or EBRT and deep venous thrombosis. Conclusion: Curative RT for prostate cancer using contemporary methodologies was not associated with an increased risk of TED.

  • Lindgren, Emil
    Umeå University, Faculty of Science and Technology, Department of Applied Physics and Electronics.
    Studie om BREEAM, Miljöbyggnad, Svanenmärkning och GreenBuildning2017Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    This essay will examine four different certifications regarding environmental aspects in the building industry in the Swedish context. The bachelor essay has been made in collaboration with MAF Arkitektkontor AB. The company is active within building technique, interior design and projection. The aim of this essay is to educate the reader about Greenbuilding, Miljöbyggnad, BREEAM and Svanen. The methods of survey for each certification system will be explained more in detail. The process of certification, the costs and the different grading systems are some of the factors that will influence the choice of certification system. The results will be based on the theory of the different certification systems. There are considerable differences between each system. The extent and the demands of each system are some aspects that have been taken into consideration. BREEAM and Svanenmärkning are two comprehensive systems that require high demands on all levels in the building process. In the planning phase there are a lot of demands that need to be fulfilled in order to achieve the goal of certification. A technique well adapted makes it easier for the architect to create good possibilities for the future building. To achieve a certificated building there are a lot for tools to simplify the works of those involved in the project. BIM is one of the tools that can be to a huge advantage within the building industry. ArchiCAD from Graphisoft is the program used by MAF. The broadness of the program makes it possible to achieve a lot of the demands. In several of the systems the materials chosen are essential and, thus need to be documented from start. There are different material data bases available on the market that help to choose the right material for each building.

  • Ågren, Sanna
    Umeå University, Faculty of Science and Technology, Department of Computing Science.
    Object tracking methods and their areas of application: A meta-analysis: A thorough review and summary of commonly used object tracking methods2017Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Object tracking is a well-studied problem within the the area of image processing. The ability to track objects has improved drastically during the last decades, however, it is still considered a complex problem to solve. The importance of object tracking is reflected by the broad area of applications such as video surveillance, human-computer interaction, and robot navigation.

    The purpose of this study was to examine, evaluate, and make a summary of the most common object tracking methods. In this paper a thorough review of the object tracking process is presented. This includes selection of object representation, object features, methods for object detection, and methods for tracking the object over succeeding frames. A summary of the object tracking methods covered in this paper is presented in the result section, including advantages, disadvantages, and for which context each method is suitable for.

  • Brattgård, Tove
    Umeå University, Faculty of Arts, Department of historical, philosophical and religious studies.
    Den pliktetiska datorn: En diskussion om förutsättningarna för Kants pliktetik som etisk teori i datorer som har en plats i vardagen2017Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Many has asked themselves the question, now when technology gets a larger importance in everyday life, if it is necessary to give this technology the ability to act according to an ethical theory. In this paper I will say that it is a good idea to give computers that take part in everyday life an ethic, even though they are not conscious or ethically responsible to a higher degree. The choosen ethic for this paper is the deontological ethics of Kant, which initially seems very appealing as an ethic for computers. I write that even if that is the case, it is not suitable as a theory for computers. As a conclusion I have choosen to present questions that may be up for discussion later, or that will be interesting to discuss when computers work under new conditions. This paper is written in Swedish.

    Key words: Kant, ethics, technology, computers, consciousness, thinking.

  • Pedraza, Yuli
    Umeå University, Faculty of Arts, Department of language studies.
    “Me gusta el español, pero no lo hablo.”: Un estudio de la fluidez en estudiantes de Español como Lengua Extranjera (ELE) en Jönköping, Suecia.2017Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    This is an investigation about the fluency level in Spanish that Swedish students have gotten after studying the course B2 advanced level of Spanish. We used the scale that the Common European Framework of Reference for Languages of the Counsel of Europe has made for the schools.

    At the same time the results of this investigation could show the motivation level of the students of Spanish in relation to the quality of speech and fluency. It was possible through a conversational test, where they were interviewed by a Spanish speaker interviewer, who asked questions and recorded them.

    It was done in most of the high schools in Jönköping, Sweden, where Spanish is taught as a modern language. We used a qualitative and quantitative method, to show if the conversational level that the students have, responds to the requirements that the Swedish education ministry (Skolverket) and the Counsel of Europe expects.

  • Dimova, Lidiya G.
    et al.
    Zlatkov, Nikola
    Umeå University, Faculty of Medicine, Molecular Infection Medicine Sweden (MIMS). Umeå University, Faculty of Medicine, Department of Molecular Biology (Faculty of Medicine).
    Verkade, Henkjan J.
    Uhlin, Bernt Eric
    Umeå University, Faculty of Medicine, Molecular Infection Medicine Sweden (MIMS). Umeå University, Faculty of Medicine, Department of Molecular Biology (Faculty of Medicine).
    Tietge, Uwe J. F.
    High- cholesterol diet does not alter gut microbiota composition in mice2017In: Nutrition & Metabolism, ISSN 1743-7075, E-ISSN 1743-7075, Vol. 14, 15Article in journal (Refereed)
    Abstract [en]

    Introduction: Western diet containing both saturated fat and cholesterol impairs cardio- metabolic health partly by modulating diversity and function of the microbiota. While diet containing only high fat has comparable effects, it is unclear how diets only enriched in cholesterol impact the microbiota. Therefore, we aimed to characterize the response of host and microbiota to a high cholesterol ( HC) diet in mice susceptible to cardio- metabolic disease. Methods: LDLR knockout mice received either 1.25% HC or no cholesterol containing control diet ( NC) for 12 weeks before characterizing host cholesterol metabolism and intestinal microbiota composition ( next generation sequencing). Results: HC diet substantially increased plasma ( 1.6- fold) and liver cholesterol levels ( 21- fold), biliary cholesterol secretion ( 4.5- fold) and fecal neutral sterol excretion ( 68- fold, each p < 0.001) but not fecal bile acid excretion. Interestingly, despite the profound changes in intestinal cholesterol homeostasis no differences in microbial composition between control and HC- fed mice were detected. In both groups the main phyla were Bacteroidetes ( 55%), Firmicutes ( 27%) and Verrucomicrobia ( 14%). Conclusion: Our results demonstrate that in mice HC diet alone does not alter the microbiota composition despite inducing substantial adaptive changes in whole body cholesterol homeostasis. The impact of Western diet on intestinal microbiota thus appears to be mediated exclusively by its high fat content.

  • Karlsson, Elin
    Umeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences.
    Dioxiner och metaller i Lövselefjärdens sediment: Förstudie av Lövselefjärdens sediment med avseende på föroreningar från ett tidigare sågverk2017Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The aim of this study was to determine if and how especially dioxins but also metals (arsenic, copper and chromium) has spread and deposited in the sediments of Lövselefjärden in northern Sweden. The study was also meant to determine if these pollutions could be related to the previous sawmill that was located near the bay. A gravity sampler was used to extract sediment cores from the bottom of Lövselefjärden. Five sample locations were used, and in one of the locations three different depths were sampled. The results show a similar distribution of the dioxin congeners between the samples taken in the sediment and the chemical preparation used at the sawmill. There was also a similarity between the proportions of metals in the sediment and the solution with metals used at the sawmill. It was there for concluded that the pollution mainly originates from the sawmill. The amount of dioxins was above the guidelines from both USA and Canada for most samples. For the metals, the guideline for arsenic in both USA and Canada was exceeded in all the samples, for copper the guideline from Canada was exceeded in all the samples and two of the samples exceeded the guideline from USA. The chromium amount did not exceed any guidelines in this study. The pollutions appear to be transported outwards towards the ocean and superimposed by sediment deposited later. Further studies to determine the bioavailability of the pollution and to determine further how the pollutions have spread and superimposed in the sediment are necessary.

  • Olsson, Linn
    et al.
    Umeå University, Faculty of Social Sciences, Department of Informatics.
    Lingebrandt, Linnea
    Umeå University, Faculty of Social Sciences, Department of Informatics.
    Fenomenet nätverk: Betydelsen av att nätverka för digitala entreprenörer2017Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Network is a difficult term that many have tried to explain. The terms colliding with this huge phenomenon are endless and makes you even more curious to define it. Why has it become so important for entrepreneurs and how do they use it? By contacting local entrepreneurs and ask them about their work we got the result that networks has many different shapes and it is near to impossible to define it as just one thing. Networking has become an important tool that entrepreneurs use to succeed with their businesses. The importance of networking is hard to describe but from our study we learned that today you can not survive without it.

  • Bedjaoui, Idriss
    Umeå University, Faculty of Arts, Department of historical, philosophical and religious studies.
    Algeriska befrielsekampen: Den svenska pressens skildring av religionens betydelse och roll 1954-19582017Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
  • Lundgren, Ulrika
    Umeå University, Faculty of Science and Technology, Department of Science and Mathematics Education.
    Extra anpassningar i matematik: En fallstudie i grundskolemiljö2017Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
    Abstract [sv]

    I den här studien undersöks hur begreppet extra anpassningar tolkas och används i praktiken. Syftet med studien är att få en djupare inblick i vilket stöd elever i matematiksvårigheter möter i den dagliga matematikundervisningen. Undersökningen har genomförts som en fallstudie med ett kvalitativt angreppssätt vid en grundskola i norra Norrlands kustland. Vid analysen av resultatet har ramfaktorernas påverkan och betydelse för läroplanens arenor varit en teoretisk utgångspunkt, i syfte att få en djupare förståelse för hur implementeringen av arbetet med extra anpassningar har skett. Resultatet visar att begreppet extra anpassningar tolkas olika av olika aktörer, och att läraren har det övergripande ansvaret när det kommer till planering och genomförande av de anpassningar som sker. De extra anpassningar som genomförs och dokumenteras i studien består i huvudsak av individinriktade insatser.

  • Schavon, Henrik
    Umeå University, Faculty of Science and Technology, Department of Science and Mathematics Education.
    Formativ kamratbedömning i biologi2017Independent thesis Advanced level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Studien i detta arbete utfördes våren 2017 under min del av den verksamhetsförlagdautbildningen. Studien syftar till att ta reda på om elever som läser biologi pågymnasieskolan upplever att de skriver en bättre laborationsrapport omkamratbedömning används, samt att ta reda på hur elever upplever att lämna ifrånsig sin rapport för att få feedback av en klasskamrat.Efter att eleverna skrivit sin laborationsrapport fick de svara på en enkät varssammanställning presenteras under resultat. För att jag skulle få en djupareförståelse deltog sex elever i en semistrukturerad intervju där jag utgick från sammafrågor som på enkäten.Mina slutsatser är att eleverna tycker att de genom den feedback de fick av sinakamrater, lämnade in en bättre rapport för bedömning. Hur mycket de tog till sig avden feedback de fick hade till viss del betydelse på vilken kamrat feedbackenkommer ifrån. De flesta eleverna upplevde att det kändes bra att lämna ifrån sig sinrapport till en kamrat men även här fanns åsikter om att det har betydelse vem somger feedback.

  • Lundberg, Karl
    Umeå University, Faculty of Science and Technology, Department of Physics.
    Development of a CFD Model for a Rotating Bed Reactor in Large Volumes2017Independent thesis Advanced level (degree of Master (Two Years)), 300 HE creditsStudent thesis
  • Kremnev, Demitry
    Umeå University, Faculty of Science and Technology, Department of Science and Mathematics Education.
    Lust att lära: Faktorer som påverkar gymnasieelevers motivation i naturkunskap2017Independent thesis Advanced level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Detta examensarbete har för avsikt att ta reda på vilka faktorer inom ”Expectancy-Value” (Förväntan - värde) teori är avgörande för motivationen i naturkunskap blandgymnasieeleverna. Förväntan-värde teori utgår ifrån 2 faktorer: förväntan på attlyckas och målvärden, dvs värden man sätter på målen. Undersökningen ämnar attbesvara frågan om samverkan mellan elevernas förväntningar på sina egna förmågoroch målvärde ur elevernas och lärarens perspektiv. Två kompletterande metoderanvänds: lärarintervjuer och elevenkäter. Resultat pekar på ett komplext samspelmellan ovannämnda faktorerna. Eleverna värderar högt viktighet av sinaprestationer. Däremot visar de varken starkt inre intresse eller ser innehålletsviktighet utanför skolan. Lärarna anger större perspektivet på fenomenet ochelevsvaren. Vidare nämns andra betydelsefulla faktorer som ligger i samklang medförväntan-värde teoretiska ramverket. Examensarbetets resultat är viktigt både förförfattarens framtida jobb samt för lärare och forskare som vill skapa förståelse avfenomenet, förbättra undervisningskvalité och som underlag för vidare forskning.

  • Prejner, Magnus
    Umeå University, Faculty of Science and Technology, Department of Applied Physics and Electronics.
    BIM Undersökning: Undersökning av kompetens och erfarenhet för BIM2017Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Building Information Modeling is a step in the right path to be able to handle the production rate that is needed for the increase in population in Sweden and handle the current housing shortage. It is important that the small and medium sized enterprises follow the extensive digitization which is happening to the construction sector, and it is also essential to keep being competitive in both Sweden and Europe. Increase Competence in Northern Building is a project which started to make sure the small and medium sized enterprises from the Nordic countries keep being competitive in Europe. ICNB is an interregional project together with Norway and Finland.

     

    Building Information Modeling refers to the process of handling information regarding a buildings whole life cycle or parts of it. There are plenty of benefits from using BIM, and it is also one of the biggest reasons that it is important to follow this digitization to keep being competitive in Europe. Through interviews with different trade organizations and a couple of companies from each industry branch will competence and experience for BIM be investigated.

     

    The results show that the companies agree on the positive aspects with usage of BIM. It varies a lot between NCC and the consulting companies what focus the educations have, where the main purpose with the educations is the biggest difference between them. The consulting companies educate purely to be able to use the software practically, where NCC also works with developing the mind-set and understanding for BIM. 

  • Markusson, Tobias
    Umeå University, Faculty of Arts, Department of historical, philosophical and religious studies.
    Det odefinierbara: En studie om gymnasielärares förhållande till värdegrunden2017Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    The purpose of Det odefinierbara – en studie om gymnasielärares förhållande till värdegrunden, (The undefinable – a study about high school teachers and their relation to the basic values) is to gain an understanding on how teachers from different subjects define, and how they experience confrontation with the basic values and common principles stated in the regulatory documents. The study was made using a comparative qualitative method on a questionnaire survey that high school teachers answered from the perspective of the subject that they are teaching.The results indicate that teachers who have studied, and are teaching, humanities, more often experience confrontation with the basic values than teachers teaching other subjects. Also, the study shows that there is a common definition on what the basic values are even though the right of interpretation belongs to the individual. Furthermore, the study indicates that there is an expectation that subjects teaching humanities, especially the subject comparative religion, should handle confrontation with the basic values.

  • Nilsson, Perry
    Umeå University, Faculty of Arts, Department of historical, philosophical and religious studies.
    Mellan stat och imperium: En studie av gränsöverskridande förbindelser mellan Västerbotten och Österbotten under perioden 1835-18702017Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    This master thesis examines cross-boundary connections between a state and an empire. This was done by mapping connections over Kvarken between the Swedish county of Västerbotten and its Finnish counterpart, Österbotten, during the period 1835-1870. Accounts from the custom houses in Jakobstad, Nykarleby, Vasa, Kaskö and Kristinestad served as primary source material together with contemporary Osterbottnian newspapers. For this thesis, a quantitative content- and network analysis as well as a qualitative text analysis was conducted out of a spatial, boundary- and imperial theoretical framework.

    This thesis shows that the sea trade continued during the entire period without being hindered by neither impending cholera epidemics nor the Crimean War. When other trading routes were cut off by trade embargoes or when ice covered the sea; the trade never ceased. The traffic across Kvarken was primarily Vasterbottnian, and a most Swedish project, except during the Crimean war. During the war, an enormous amount of Osterbottnian trading parties would come to Västerbotten, chiefly in pursuit of salt.

    Compared to other trade conducted, the Osterbottnian trade with Västerbotten was extensive both in terms of the sheer number of ships, but also in the value of traded goods. Thus, Kvarken can be seen as a cross-border region.

    The Russian endeavour to severe ties between Sweden and Finland during the 1840’s through the abolishment of particular tariff prescriptions and swedish currency had no noteworthy impact upon trade across the Kvark. Neither value nor flow of goods was impacted. The amount of ships consistently remained at around 25-40 ships anually for the entire study period.

    To the contrary, temporary prescriptions to promote trade were constantly introduced. It was probably in the greater interest among both Russian and Swedish rulers that the connection between the two peripher, northern regions should function for the well-being and prosperity of the local peoples. In newspaper reports also the cultural value of musicians and theatre companies travelling across Kvarken was greatly appreciated.

  • Ringvall, Robert
    Umeå University, Faculty of Science and Technology, Department of Applied Physics and Electronics.
    The Impact of Internet of Things on Building Services Engineering2017Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Today communicating sensors are everywhere. There are sensors in our smart phones, in our vehicles, even in our homes. As the technology in electronics and wireless communication is developed more devices is installed all around us. The Internet connected network of physical objects is called the Internet of Things (IoT). The IoT devices send, receive and exchange data in order to control, monitor and optimize. The possible appliances for IoT spans industries, healthcare, cities, airports, and much more. This project targets the current state of IoT, how the development of IoT might affect building services engineering and possible future IoT appliances in buildings. The main appliances of IoT in buildings are energy saving procedures, maintenance improvements, chore automation and security enhancements.

    Energy saving in buildings has been a hot topic for many years due to global warming. IoT offers the possibility to reduce greenhouse gases, not only locally but also on a grander scheme. This project investigate possible energy savings by assuming that IoT can create an optimal ventilation and heating schedules. The analysis is carried out by simulating energy consumption in an apartment building using IDA ICE. The apartment building used as a reference model is located in Lycksele, Sweden. The result shows a modest energy saving of 100 kWh/apartment for heating and 250 kWh/apartment for ventilation optimization. The conclusion is that energy saving potential of IoT lies in interoperability between devices and the possibility to find correlations between data, not in individual optimizations.

    The main focus of IoT today in the building sector is to assist facility management with supervision of real estate. Sensors that send information about the state of devices decreases the supervision time of operating technicians. It's fundamental for facility management companies to cooperate with building engineering companies in order to avoid a constant change of batteries in IoT devices installed in buildings. By settle necessary power connections during the construction phase of a building the need for batteries is limited.

  • Byström, Johan
    Umeå University, Faculty of Science and Technology, Department of Applied Physics and Electronics.
    En extra fasadskivas effekt på energiprestandan hos ett flerbostadshus: En kontroll av Boverkets krav för nära-nollenergibyggnader till 20212017Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Increasing the energy efficiency of buildings and the introduction of more strict regulations are small but important steps towards a better climate. Today the housing and services sector stands for nearly 40 % of Sweden’s energy use. To push the development towards more energy efficient buildings in Europe, all the new buildings are required to be nearly zero-energy buildings by 2021.

    The purpose of this project was to evaluate whether the use of an additional facade board on an apartment building results in putting the energy performance within the current energy performance requirements, and also within the future requirements for nearly zero-energy buildings (NZEBs). The facade boards that were tested in this project are manufactured by Kingspan and Isover. The different boards were tested in thicknesses of 30 and 50 mm. The aim of the project was to calculate the building’s average heat transfer coefficient, specific energy use and primary energy number (PET) using COMSOL Multiphysics (CM) and IDA Indoor Climate and Energy (IDA ICE). The results were then about to be controlled against the current energy performance requirements together with the future requirements for NZEBs.

    The approach of this project consisted of the use of the softwares CM and IDA ICE. Because IDA ICE requires input of the thermal bridges of the building, CM was used to simulate these. This was done in order to achieve more reliable values than if an assumption was made or a standard value was used. A model of the building was then created in IDA ICE where its energy performance and average heat transfer coefficient were obtained from simulations over a normal year.

    The results obtained from the simulations in CM seemed credible as the use of the best facade board caused the values of the thermal bridges to end up at ”Good” according to IDA ICE’s built in scale. The simulations in IDA ICE showed that the specific energy use of the bulding without an additional facade board was 55,9 kWh/m2,year compared to Boverket’s current requirements at 80 kWh/m2,year. With the 50 mm Kingspan facade board, the board with the best result, the specific energy use was reduced to 53 kWh/m2,year, an improvement of 5,2 %. For the case without an additional facade board, the PET was 66,6 kWh/m2,year compared to the NZEBs requirements for 2018 at 85 kWh/m2,year together with the requirements for year 2021 at 65 kWh/m2,year. By using the 50 mm Kingspan facade board the PET was reduced to 63,3 kWh/m2,year, an improvement of 5,0 %. This resulted in putting the PET below the NZEB requirements for 2021. The facade board that resulted in the least energy savings, Isover P31 30 mm, had an improvement of 2,5 and 2,7 % for the specific energy use and the PET respectively. This facade board also resulted in putting the PET below the NZEB requirements for 2021.

    The most obvious conclusions that could be drawn from the simulations was that the specific energy use was below the current energy performance requirements with a great margin, both with and without an additional facadeboard. The PET was well below theNZEB requirements for 2018 and was also belowthe NZEB requirements for 2021 using any of the tested facade boards. The building’s average heat transfer coefficient was also well below both today’s energy performance requirements and the NZEB requirements for 2018 and 2021. A use of an additional facade board resulted in an energy saving of around 2,5 and 5 % in the worst and the best case, respectively. Due to the neglect of the ring wall under the bulding, the energy performance is most probably slightly high. However, this is not of utmost relevance since the company normally does not use this kind of solution for their standard buildings. Other uncertainties about the choice of airflows in property spaces may have influenced the results in the other direction. If there are any other obvious energy saving measures than using an additional facade board, these should be taken into account primarily as a facade board can only reduce the energy use marginally.

  • Abdallah, Wissam
    Umeå University, Faculty of Arts, Department of historical, philosophical and religious studies.
    Det sistakorståget: Operation Barbarossa: En historiografisk studie om orsakerna till den tyska invasionen av Sovjetunionen2010Independent thesis Advanced level (degree of Master (One Year)), 10 credits / 15 HE creditsStudent thesis
  • Lorena Ruano, Ana
    et al.
    Shadmi, Efrat
    Furler, John
    Rao, Krishna
    San Sebastián, Miguel
    Umeå University, Faculty of Medicine, Department of Public Health and Clinical Medicine, Epidemiology and Global Health.
    Uribe, Manuela Villar
    Shi, Leiyu
    Looking forward to the next 15 years: innovation and new pathways for research in health equity2017In: International Journal for Equity in Health, ISSN 1475-9276, E-ISSN 1475-9276, Vol. 16, 35Article in journal (Refereed)
    Abstract [en]

    Since our launch in 2002, the International Journal for Equity in Health (IJEqH) has furthered our collective understanding of equity in health and health services by providing a platform on which academics and practitioners can share their work. Today, we celebrate our fifteenth anniversary with an article collection that presents a call for new and novel research in equity in health and we invite our authors to use new approaches and methods, and to focus on emerging areas of research related to health equity in order to set the stage for the next fifteen years of health equity research. Our anniversary issue provides a platform for expanding the conceptualization, diversity of populations and study designs, and for increasing the use of novel methodologies in the field. The IJEqH has helped to support the wider group of researchers, policymakers and practitioners with a commitment to social justice and equity but there is still more to do. With the help of the highly committed editorial team and editorial board, the innovative work of researchers worldwide, and the countless of hours dedicated by hundreds of reviewers, we are confident in the IJEqH's ability to continue supporting the dissemination of health equity research for years to come.

  • Beran, David
    et al.
    Byass, Peter
    Umeå University, Faculty of Medicine, Department of Public Health and Clinical Medicine, Epidemiology and Global Health.
    Gbakima, Aiah
    Kahn, Kathleen
    Umeå University, Faculty of Medicine, Department of Public Health and Clinical Medicine, Epidemiology and Global Health.
    Sankoh, Osman
    Tollman, Stephen
    Umeå University, Faculty of Medicine, Department of Public Health and Clinical Medicine, Epidemiology and Global Health.
    Witham, Miles
    Davies, Justine
    Research capacity building-obligations for global health partners2017In: The Lancet Global Health, ISSN 2352-3026, E-ISSN 2214-109X, Vol. 5, no 6, E567-E568 p.Article in journal (Refereed)
  • Falk, Sofia
    Umeå University, Faculty of Arts, Department of culture and media studies.
    Litteratursamtal om Tusen strålande solar och Othello: Läsarter i litteratursamtal med elever från språkintroduktion och gymnasieskolan2017Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    The objective of this thesis is integrating book talks. The aim is to explore and describe which forms ofreadings of the books appear in the analyzed book talks. The content analysis is based upon soundrecordings of the book talks and the questions that provide their basis. Tengberg’s (2011) forms ofreading make up the analysis categories. Questions are: (1) Which forms of reading are expressed in thebook talks? (2) Toward which forms of reading do the questions direct the reader? (3) Which forms ofreading are most frequent in the book talks? The result show that five out of six forms of reading areactive in the book talks and that the questions direct the students towards four. Most frequent are the plotoriented and during major parts of the book talks no form of reading is active. Two complementary formsof reading and a re-evaluating of parts of the book talks are suggested.

  • Lagerkvist, Bengt
    Umeå University, Faculty of Arts, Department of culture and media studies.
    Kognitionsteoretiskt perspektiv på Sara Lidmans Lifsens rot: En studie i läsaning och lyssnande2016Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
  • Hagert, Simon
    et al.
    Umeå University, Faculty of Social Sciences, Umeå School of Business and Economics (USBE), Business Administration.
    Lantz, Gustav
    Umeå University, Faculty of Social Sciences, Umeå School of Business and Economics (USBE), Business Administration.
    Sailing through storms: A practical exhibition of entrepreneurial leadership methods2017Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Weathering the entrepreneurial storm is considered by many an art form in itself but an undeniable, universal truth is the unilateral impact of an extraordinary leader on the chances of triumph in the face of great adversity. Yet the focus of academic studies all too often concerns the understanding of the weather patterns, the choice of captain and the direction of the ship rather than how to turn the wheel, raise the mast or set the sails. This study has the aim of deciphering the routines, actions and methods of entrepreneurial leaders so as to produce tangible, actionable knowledge which real practitioners can bestow upon themselves. This is a collective case study which examines ten entrepreneurial leaders from various cities throughout Sweden using semi-structured, in-depth interviews. The findings pertain to routines, activities and methods that they use to fulfil five roles of effective entrepreneurial leadership which are further boiled down to 52 thematic strategies. These strategies are then aligned into five fundamental skills; encompassing a collective approach, building individual relationships, fragmentation, dynamic perspective and utilising feedback. We believe that through developing these skills that entrepreneurial leaders can better cultivate their own routines, activities and methods contingent to their particular circumstance and transaction set.

  • Lagerkvist, Bengt
    Umeå University, Faculty of Arts, Department of culture and media studies.
    Lyssnande och läsande: En pilotstudie med kognitiv litteraturteori2017Independent thesis Advanced level (degree of Master (One Year)), 10 credits / 15 HE creditsStudent thesis
  • Näsström, Elin
    et al.
    Umeå University, Faculty of Science and Technology, Department of Chemistry.
    Parry, Christopher M.
    Thieu, Nga Tran Vu
    Maude, Rapeephan R.
    de Jong, Hanna K.
    Fukushima, Masako
    Rzhepishevska, Olena
    Umeå University, Faculty of Science and Technology, Department of Chemistry.
    Marks, Florian
    Panzner, Ursula
    Im, Justin
    Jeon, Hyonjin
    Park, Seeun
    Chaudhury, Zabeen
    Ghose, Aniruddha
    Samad, Rasheda
    Van, Tan Trinh
    Johansson, Anders
    Umeå University, Faculty of Medicine, Department of Clinical Microbiology.
    Dondorp, Arjen M.
    Thwaites, Guy E.
    Faiz, Abul
    Antti, Henrik
    Umeå University, Faculty of Science and Technology, Department of Chemistry.
    Baker, Stephen
    Reproducible diagnostic metabolites in plasma from typhoid fever patients in Asia and Africa2017In: eLIFE, E-ISSN 2050-084X, Vol. 6, e15651Article in journal (Refereed)
    Abstract [en]

    Salmonella Typhi is the causative agent of typhoid. Typhoid is diagnosed by blood culture, a method that lacks sensitivity, portability and speed. We have previously shown that specific metabolomic profiles can be detected in the blood of typhoid patients from Nepal (Nasstrom et al., 2014). Here, we performed mass spectrometry on plasma from Bangladeshi and Senegalese patients with culture confirmed typhoid fever, clinically suspected typhoid, and other febrile diseases including malaria. After applying supervised pattern recognition modelling, we could significantly distinguish metabolite profiles in plasma from the culture confirmed typhoid patients. After comparing the direction of change and degree of multivariate significance, we identified 24 metabolites that were consistently up- or down regulated in a further Bangladeshi/Senegalese validation cohort, and the Nepali cohort from our previous work. We have identified and validated a metabolite panel that can distinguish typhoid from other febrile diseases, providing a new approach for typhoid diagnostics.

  • Westerlund, Fredrik
    Umeå University, Faculty of Social Sciences, Umeå School of Business and Economics (USBE), Statistics.
    CREDIT CARD FRAUD DETECTION (Machine learning algorithms)2017Independent thesis Advanced level (degree of Master (One Year)), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Credit card fraud is a field with perpetrators performing illegal actions that may affect other individuals or companies negatively. For instance, a criminalcan steal credit card information from an account holder and then conduct fraudulent transactions. The activities are a potential contributory factor to how illegal organizations such as terrorists and drug traffickers support themselves financially. Within the machine learning area, there are several methods that possess the ability to detect credit card fraud transactions; supervised learning and unsupervised learning algorithms. This essay investigates the supervised approach, where two algorithms (Hellinger Distance Decision Tree (HDDT) and Random Forest) are evaluated on a real life dataset of 284,807 transactions. Under those circumstances, the main purpose is to develop a “well-functioning” model with a reasonable capacity to categorize transactions as fraudulent or legit. As the data is heavily unbalanced, reducing the false-positive rate is also an important part when conducting research in the chosen area. In conclusion, evaluated algorithms present a fairly similar outcome, where both models have the capability to distinguish the classes from each other. However, the Random Forest approach has a better performance than HDDT in all measures of interest.

  • Lundmark, Sara
    et al.
    Umeå University, Faculty of Medicine, Department of Clinical Sciences, Speech and Language Therapy.
    Sjödin, Malin
    Umeå University, Faculty of Medicine, Department of Clinical Sciences, Speech and Language Therapy.
    Deep brain stimulation av kaudala zona incerta: En undersökning av rösttremor hos patienter med essentiell tremor2017Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
    Abstract [sv]

    Bakgrund: Deep brain stimulation (DBS) i kaudala zona incerta (Zi) har en tremorreducerande effekt vid den neurologiska sjukdomen essentiell tremor (ET). Stimulering av Zi har även positiva effekter på rösttremor, men individuella variationer förekommer. Tidigare har främst effekten mellan på- och avslagen stimulering undersökts. Inga studier har jämfört effekten på rösttremor vid ökande nivåer av stimuleringsstyrka.

     

    Mål: Att undersöka effekt på rösttremor vid ökande unilateral stimuleringsstyrka av DBS i Zi hos deltagare med ET. Samt att undersöka prevalens och att se vilken rösttremorreducerande effekt deltagarnas kliniska inställningar har.

     

    Metod: Trettioåtta deltagare med DBS Zi, bedömdes vid tre tillstånd: utan stimulering (DBS OFF), med kliniska inställningar (DBS ON) samt med ökande stimuleringsstyrka, 0,5-4,5V (DBS+). Rösttremor bedömdes utifrån inspelningar av uthållna vokalproduktioner i programmet “Visual Sort and Rate Method” (VISOR). Vid bedömning skattades förekomst och grad av rösttremor hos deltagarna genom att deltagarens egna inspelningar jämfördes med varandra i VISOR.

     

    Resultat: DBS Zi hade på gruppnivå en positiv effekt på rösttremor vid såväl DBS ON som vid DBS+. De individuella skillnaderna var dock stora. Flest antal deltagare blev rösttremorfria vid DBS ON och vid stimuleringsnivåerna 1,5V, 2,0V, 3,5V och 4,5V. Prevalensen av rösttremor var 71% (27 deltagare).

     

    Slutsats: DBS Zi har på gruppnivå en positiv effekt på rösttremor. De kliniska inställningarna är stimuleringsnivån som flest deltagare blir rösttremorfria vid. Den individuella variationen gör att man inte kan förutse om en individ kommer att få reducerad rösttremor av DBS Zi.

  • Gustafsson, Jim
    et al.
    Umeå University, Faculty of Medicine, Department of Clinical Sciences, Speech and Language Therapy.
    Uppgård, Johanna
    Umeå University, Faculty of Medicine, Department of Clinical Sciences, Speech and Language Therapy.
    Föräldrars rapporterade compliance till råd om språkstimulans efter en informationsinsats2017Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
    Abstract [sv]

    Sammanfattning

    Bakgrund

    Föräldrar till barn med språkstörning uppvisar i mindre utsträckning språkstimulerande beteenden i samspel med sina barn, vilket inte gynnar barnets språkutveckling. Undervisning över flera tillfällen har visat sig leda till att föräldrar lär sig att använda språkstimulerande strategier i samspel med sina barn. Dock saknas studier som redogör för förändringar i föräldrars compliance till råd om språkstimulerande strategier som en följd av ett utbildningstillfälle i grupp.

    Syfte

    Syftet med denna studie är att undersöka vilka följder en fördjupad informationsinsats ger upphov till gällande föräldrars rapporterade compliance till råd om språkstimulerande strategier som ges på rutinmässig rådgivning.

    Metod

    Sammanlagt deltog 12 föräldrar till barn med språkstörning. Av dessa hade 6 deltagit på ett rådgivningstillfälle under nybesök och resterande 6 hade utöver detta deltagit på ytterligare en informationsinsats i form av en föreläsning. För att undersöka föräldrarnas rapporterade compliance till givna råd om språkstimulans genomfördes enskilda intervjuer med föräldrarna, som också fick fylla i en enkät efter intervjun.

    Resultat

    Resultatet visar att den fördjupade informationsinsatsen ökar föräldrars rapporterade compliance till råden om spegling och att sätta ord på situationen, samt att den leder till kvalitetsskillnader i rapporterad compliance gällande råden benämning och högläsning.

    Slutsatser

    Utifrån våra resultat drar vi slutsatsen att den fördjupade informationsinsatsen kan ge en positiv effekt på föräldrars rapporterade compliance till råden om spegling och att sätta ord på situationen. Informationsinsatsen verkar även ha positiv inverkan på föräldrarnas rapporterade kommunikationsstil i samspel med barnet. Det är viktigt att föräldrar i fortsättningen erbjuds en kombination av rådgivning på både nybesök och föreläsning.

  • Röring, Johan
    Umeå University, Faculty of Science and Technology, Department of Mathematics and Mathematical Statistics.
    Volatility and variance swaps: A comparison of quantitative models to calculate the fair volatility and variance strike2017Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Volatility is a common risk measure in the field of finance that describes the magnitude of an asset’s up and down movement. From only being a risk measure, volatility has become an asset class of its own and volatility derivatives enable traders to get an isolated exposure to an asset’s volatility. Two kinds of volatility derivatives are volatility swaps and variance swaps.

    The problem with volatility swaps and variance swaps is that they require estimations of the future variance and volatility, which are used as the strike price for a contract. This thesis will manage that difficulty and estimate strike prices with several different models. I will de- scribe how the variance strike for a variance swap can be estimated with a theoretical replicating scheme and how the result can be manipulated to obtain the volatility strike, which is a tech- nique that require Laplace transformations. The famous Black-Scholes model is described and how it can be used to estimate a volatility strike for volatility swaps. A new model that uses the Greeks vanna and vomma is described and put to the test. The thesis will also cover a couple of stochastic volatility models, Exponentially Weighted Moving Average (EWMA) and Gener- alized Autoregressive Conditional Heteroskedasticity (GARCH).

    The models’ estimations are compared to the realized volatility. A comparison of the mod- els’ performance over 2015 is made as well as a more extensive backtesting for Black-Scholes, EWMA and GARCH.

    The GARCH model performs the best in the comparison and the model that uses vanna and vomma gives a good result. However, because of limited data, one can not fully conclude that the model that uses vanna and vomma can be used when calculating the fair volatility strike for a volatility swap. 

  • Almqvist, Saga
    et al.
    Umeå University, Faculty of Science and Technology, Department of Mathematics and Mathematical Statistics.
    Nore, Lana
    Umeå University, Faculty of Science and Technology, Department of Mathematics and Mathematical Statistics.
    Where to Stack the Chocolate?: Mapping and Optimisation of the Storage Locations with Associated Transportation Cost at Marabou2017Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Today, inventory management at Marabou is organised in such way that articles are stored based on which production line they belong to and are sent to storage locations close to their production line. However, some storage locations are not optimised, insofar articles are stored out of pure habit and follow what is considered most convenient. This means that the storage locations are not based on any fixed instructions or standard. In this report, we propose optimal storage locations with respect to transportation cost by modelling the problem mathematically as a minimal cost matching problem, which we solve using the so-called Hungarian algorithm. To be able to implement the Hungarian algorithm, we collected data regarding the stock levels of articles in the factory throughout 2016. We adjusted the collected data by turning the articles into units of pallets. We considered three different implementations of the Hungarian algorithm. The results from the different approaches are presented together with several suggestions regarding pallet optimisation. In addition to the theoretical background, our work is based on an empirical study through participant observations as well as qualitative interviews with factory employees. In addition to our modelling work, we thus offer several further suggestions for efficiency savings or improvements at the factory, as well as for further work building on this report.

  • Gullberg, Sofia
    et al.
    Umeå University, Faculty of Science and Technology, Department of Mathematics and Mathematical Statistics.
    Lundberg, Elina
    Umeå University, Faculty of Science and Technology, Department of Mathematics and Mathematical Statistics.
    Increase resource utilization of Alfa Laval's Vertical Lift Modules by maximizing their order picking share2017Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Alfa Laval is currently world leaders within heat transfer, separation and fluid handling. One of their distribution centers is situated in Tumba, Stockholm, where they maintain a storage warehouse used for spare parts to their products. In the warehouse, there are currently 4 216 items located in so called Vertical Lift Modules, VLMs. The goal for DC Tumba is to reach an order line picking share of 40% provided by these VLMs, to decrease time spent on picking activities. The purpose of this project was to evaluate and improve current method for item location management of these VLMs by optimizing its resource utilization to reach a picking share of 40% of total order lines and thereby increase efficiency.

     

    Data were provided by Alfa Laval containing item information and historical order lines. Additional data were also collected by measurement tests and observations in the warehouse. A mathematical optimization model was then developed and formulated as a binary Knapsack problem, using the collected data as input. The model was thereafter implemented via AMPL and solved with the Gurobi Optimizer solver and, upon request, by a modified Greedy Heuristic algorithm implemented via VBA in Excel. The Gurobi Optimizer solver generated an order linepicking share from the VLMs of 41,93% and the solution was used to verify the strength and credibility of the solution generated by the Greedy Heuristic solver. The Greedy Heuristic solution resulted in a picking share of 41,25%.

     

    Improvement was achieved as the new solutions increased the order picking share from the VLMs with at least seven percentage points, which implies picking time savings of nearly 20% per year. The Greedy Heuristic solver also proved to be almost as good as the exact Gurobi Optimizer solver since the two solutions have 94,44 % of selected items in common. Therefore, the Greedy Heuristic solver is considered good and useful in the future for Alfa Laval

  • Fogelqvist, Petrus
    et al.
    Umeå University, Faculty of Social Sciences, Department of Psychology.
    Lestander, Hedvig
    Umeå University, Faculty of Social Sciences, Department of Psychology.
    Transformational Leadership and Motivation in Sport: The Moderating Role of Personality and Self-other Agreement Ratings2017Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Sport dropout during adolescence is a common phenomenon which is connected to motivation. Therefore this thesis investigated the relationship between coaches’ (N = 61, Mage = 40.39) transformational leadership and athletes’ (N = 132, Mage = 20.61) type of motivation in Swedish sport clubs. In addition, the moderating role of personality and self-other agreement ratings were examined. A cross sectional research design was used and data was collected through self-ratings and other ratings. Data was analysed using SPSS and the add-on program Process macro. To investigate the moderating role of personality and level of agreement, coach-athletes dyads were created (N = 38). The result showed that transformational leadership is positively associated with more self-determined types of motivation. Four of the coach’s personality traits (i.e., honesty-humility, emotionality, extraversion and conscientiousness) moderated the relationship between transformational leadership and motivation. For the athletes agreeableness moderated this relationship. A majority of the coaches and athletes disagreed in rating the coaches’ transformational behaviours; however the result only showed significant correlation between coaches who underestimated and athletes’ lack of motivation. In conclusion, transformational leadership is suitable in a sport context. Future research could use a longitudinal design to further explore personality’s role in leadership. Practical implications of transformational leadership in connection to education are discussed.

  • Hallin, Felicia
    et al.
    Umeå University, Faculty of Social Sciences, Umeå School of Business and Economics (USBE), Business Administration.
    Printz, Sanna
    Umeå University, Faculty of Social Sciences, Umeå School of Business and Economics (USBE), Business Administration.
    Kraftfulla kundrelationer: Kundengagemangets betydelse för relationen och lojaliteten mellan mikroproducenter och elhandelsbolag ur ett A2A-perspektiv2017Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
    Abstract [sv]

    Vi kan se att mikroproduktion av el ökar i dagens samhället och att detta leder till att relationen mellan elhandelsbolaget och kunden förändras, när kunden övergår från att enbart köpa el till att också producera och sälja el tillbaka till elhandelsbolaget. För elhandelsbolaget uppstår då en ny marknadssituation att ta hänsyn till och vi finner detta intressant att studera då antalet mikroproducenter förväntas öka även framöver. Vidare visar mikroproducenter en högre kunskap kring el än den vanlige elhandelskunden och ställer därmed andra krav på elhandelsbolagen.

    Vårt huvudsakliga forskningsområde kundengagemang är ännu relativt begränsat utforskat empiriskt, och utgörs främst av konceptuella studier. Forskarna är överens om att kundengagemang är en viktig del av relationen och lojaliteten som kunden upplever gentemot ett företag och dess varor. Med vår studie undersöker hur kundengagemang hos mikroproducenter gentemot sitt elhandelsbolag kan ha en inverkan på relationen och lojaliteten som finns mellan aktörerna. Vi ser således på kundengagemang, relationer och lojalitet i en kontext där båda aktörerna bidrar till värdeskapandet och kan sägas både ger och tar i processen. Detta ger vår studie ett A2A-perspektiv. Eftersom detta inte tidigare applicerats på studier om kundengagemang, relationer och lojalitet gör det vår forskning unik. Med utgångspunkt i teorier om kundengagemang, relationer, lojalitet och A2A har vi skapat en intervjuguide för att undersöka hur mikroproducenter uppvisar kundengagemang och lojalitet i relationen till sina elhandelsbolag. Den empiriska studien genomfördes med semistrukturerade intervjuer med mikroproducenter som genom strategiskt urval och snöbollsurval valts ut för att representera gruppen mikroproducenter. Den empiriska datan har delats upp i teman från intervjuerna och dessa har analyserats utifrån de aspekter som framhävts i empirin.

    Resultatet visar att mikroproducenter upplever att de har ökad kunskap kring el sedan de blev mikroproducenter och att el för dem har gått från att vara en lågintresseprodukt till en högintresseprodukt. De mikroproducenter som uppvisar hög nivå av engagemang till sitt elhandelsbolag är de kunder vars interaktion till företaget har genererat dem värde, främst i form av bra bemötande från elhandelsbolaget. Vad som tydligt efterfrågas hos de mikroproducenter vi talat med är att elhandelsbolaget ska bidra med kunskap kring mikroproduktion. Överlag kan vi se att mikroproducenterna kräver mer uppmärksamhet av elhandelsbolaget nu än vad de gjort som endast elhandelskund och att detta har en inverkan på relationen och lojaliteten mellan aktörerna.

  • Timan, Hanna
    Umeå University, Faculty of Social Sciences, Department of Informatics.
    Den kreativa processen innan produktion: Metoder, värdesättande faktorer och kundrelation inom mediaföretag2017Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The development of idea and concept is the creative process before a product or service is being developed in production. In media production methods can be used to generate ideas and help the creative process along. This study aims to understand this creative process within media production companies. Through semi structured interviews with employees from five different companies I have gathered information about recurrent methods, value- setting factors and general costumer relation. By analysing the responses with support from qualitative processing and analytical induction a hypothesis was compiled about three areas in the creative process within the media production companies. The final hypothesis is that one recurrent, informal, method can be found for generating ideas. The method is informal in the aspect that it lacks structure and is not a referred to method. Four value-setting factors could be found and involvement from the client are in different ways contributing to the creative process. To work with the client rather than for the client is preferable and can save the production companies time and money.