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  • 21551.
    Vernberg, Daniel
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Computer and System science.
    Webbdesign för att skapa tillit: Tillit, webbdesign och e-handel ur ett konsumentperspektiv2017Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The electronic commerce, or e-commerce, grows each year and with this type of commerce comes unique problems that regular commerce does not have to deal with. E-commerce means that consumers cannot physically touch goods nor have face to face conversations with the retailer. Thus e-commerce involves unique trust issues compared to regular commerce. A key factor for the success of e-commerce is actively working towards gaining consumers trust and one aiding tool to do just that is using web design to gain it. The purpose of this study has been to generate a greater understanding of how web design influences consumer trust towards e-shops. To answer the studies research questions a literature review combined with a group interview and a survey has been carried out. The conclusion of this study points toward that concepts within web design influences consumer trust by various degree. Structure and layout were concepts of e-shops design that is of most importance for gaining consumer trust, even if the aesthetic appearance of e-shops is important.

  • 21552.
    Vernersson, Ante
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Electronics Design.
    Adaptive Backprojection: Developing a simple reconstruction algorithm2018Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    This group project aims to investigate the possibility ofconstructing a prototype micro-CT-scanner, hopefullyfurthering the advancement in the field of small CT-scanners,with the ultimate goal to provide a structure useable in anambulance, to scan and send images to the hospital, so thattreatment can commence directly upon arrival.This report deals with the matter of reconstructing the takenimages to construct a three-dimensional model of thescanned object. An algorithm is developed in a mannerunderstandable to those not familiar with traditionalreconstruction techniques, simplifying the understanding ofCT backprojection while also providing a useful algorithm touse along with the scanner setup. The working principles ofthe reconstruction algorithm are explained along with itsdevelopment process, and the project ends with clear resultsin the form of an “Adaptive Backprojection” algorithm.

  • 21553.
    Vernersson, Emil
    Mid Sweden University, Faculty of Human Sciences, Department of Psychology.
    Reducing auditory intrusions induced by stressful audio stimuli through activation of memory reconsolidation2015Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
  • 21554.
    Verriere, Melinda
    Mid Sweden University, Faculty of Human Sciences, Department of Social Work.
    ”Tror det handlar om manlig och kvinnlig energi”: - En kvalitativ studie om behandlares syn på sex- och kärleksberoende2016Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Sex- och kärleksberoende är begrepp som nyligen kom från USA till Sverige. Trots att det fortfarande inte är en officiellt godkänd diagnos så är det många som söker sig till de få privata klinikerna som finns för hjälp. Syftet med denna studie är att med hjälp av ett genusperspektiv undersöka behandlares syn på sex- och kärleksberoende; kriterier, diagnostisering och behandling. Undersökningen gjordes som en kvalitativ studie med semistrukturerade intervjuer och analyserades med tematisk analys. Resultaten visar att könsnormer påverkar diagnostisering och behandling av klienter samt att det finns en otydlighet kring vilka kriterier och verktyg behandlarna använder sig av. Sexberoende och män var det som flest behandlare utgick ifrån under intervjuerna, medan kärleksberoende är ett begrepp som behandlarna själva verkade osäkra inför.

  • 21555.
    Vesslegård, Robert
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Quality Technology and Management, Mechanical Engineering and Mathematics.
    Synergi eller konflikt?: Hur olika kravspecifikationer samspelar2017Independent thesis Advanced level (degree of Master (One Year)), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Customers and chemical legislation sets strict requirements for companies manufacturing processes. In order to maintain a good quality, many companies also choose to get certified according to the ISO 9001:2015 quality system. A certification in ISO 9001:2015 brings further requirements on the company's manufacturing processes.

    The purpose of this study is to contribute to knowledge about how the different requirements from customers, chemical legislation and ISO 9001:2015 are handled within practical process development.

    This study consists of a theoretical framework that describes the different requirements and how these requirements may interact with each other. Reported in the study is also the result of a completed case study that was conducted to investigate how a company works to meet the different requirements. Interviews were conducted with respondents as well as a process mapping of the manufacturing processes to investigate how the company works with requirement management.

    The results show that the company's processes get influenced by the requirements of customers, chemical legislation and ISO 9001:2015. The study also shows that there were synergies and conflicts between the different requirements. Synergies consisted of environmental requirements that made it easier for environmentally conscious customers. There was also a synergistic effect by facilitating the ISO 9001:2015 requirements for the work to achieve both environmental and customer requirements. Conflicts between customer requirements and environmental requirements could arise when environmental requirements limit the manufacturing capabilities of a product. This study provides a deeper understanding of practical requirements management which is useful both for future research and practical applications in other manufacturing companies.

  • 21556.
    Vesterberg, Elias
    Mid Sweden University, Faculty of Human Sciences, Department of Social Sciences.
    Populister eller radikala högerpopulister?2018Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Sverigedemokraterna blev i det senaste valet Sveriges tredje största parti. Vad partiet ska karaktäriseras som är sedan länge omdiskuterat bland forskare. Klart är dock att partiet har sina rötter i högerextrema miljöer. Eftersom partiet av vissa forskare har klassats som ett radikalt högerpopulistiskt parti (RHP) så har utgångspunkten för denna uppsats varit att ta reda på om de verkligen är det, dvs om partiet verkligen är ett radikalt högerpopulistiskt parti eller bara ett vanligt populistiskt parti. Analysen har genomförts med hjälp av idealtyper. Det material som undersökts har varit Sverigedemokraternas senaste principprogram från 2011 och höstbudget från 2018. Idealtyperna som är de analysverktyg som har använts har konstruerats utifrån den teori som väglett uppsatsen och är utvecklad av en forskare vid namn Cas Mudde. Muddes teori beskriver de drag som är mest kännetecknande för radikala högerpopulister. Slutsatsen i denna uppsats är att SD uppvisar flera av de drag som mest kännetecknar radikal högerpopulism och därmed bäst kan beskrivas som ett RHP-parti.

  • 21557.
    Vestergård, Fredrik
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Ecotechnology and Sustainable Building Engineering.
    Utveckling av lägenhetsavskiljande vägg2014Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The construction and property sector uses a lot of natural resources and consumes large amounts of energy, which is a reason why slight improvements in construction and real estate sector can make a big difference. Demising walls have been constructed in the same manner for a long time and with a high proportion of material that is less good for the environment. The problem is that there is no environmentally better alternative today. The purpose of this study was to develop and propose solutions for a flat partition wall to be erected with IsoTimber. The aim of the work was to create a competitive demising wall that is environmentally better than current solutions so that the building industry can have a choice. The work has included design solutions to meet the sound- and fire requirements. This project is limited to dwellings with sound class C building class Br1 and activity class VK3. The method used in the project has examined the competing alternatives wood- and steel stud walls and features that are desirable in the new wall product. The results showed small differences between the competitors, at the same time the result demonstrated a range of areas for improvement. Based the improvement that was identified a target specification was defined that formed the basis for a concept generation. Two out of eight concepts is recommended. One is a concept with completely prefabricated walls lifted with help of a crane into place in a framework when a house is been built. The second concept that is recommended is finished walling approximately 2400 x 600 mm with a weight of about 60 kg is prefabricated in a factory, these can then be raised up in a frame that has been built up where the wall shall stand. The wall that is recommended is 58- 68 mm thicker than the compared walls and lacks in the current situation an accomplished fire test. The wall will have a competitive price if the total price of the materials and the construction of the wall is approximately 600 kr/m2. The walls can be reused and reduces the amount of waste compared to competing alternatives which represents a competitive advantage.

    Keywords: IsoTimber, Demising wall.

  • 21558.
    Vesterlind, Eva-Lotta
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences.
    High temperature CTMP from birch2006Licentiate thesis, comprehensive summary (Other academic)
    Abstract [en]

    This thesis is intended to contribute to understanding of the chemithermomechanical pulping of birch intended for high freeness grades. It focuses on the effects that conditions during pre‐treatment, i.e. the chemical addition of sodium sulphite and sodium hydroxide and the temperature in pre‐heater, have on the energy consumption and process runnability in terms of disc clearance. Pulp properties are evaluated in regard to brightness and the relation between bulk and internal bond strength. Pilot trials showed that pre‐heating birch chips to high temperature prior to refining (HT CTMP > 140°C), facilitated defibration and considerably lowered energy consumption. This made it possible to produce pulp with very high freeness. Despite the low energy input at high pre‐heating temperature, shive content remained low or was even reduced in the high freeness range. Mill trials confirmed the positive effect of a high pre‐heating temperature on energy consumption and on pulp properties. Furthermore it was shown that the internal bond strength in sheets from birch CTMP, in terms of Scott‐Bond at a given bulk, compared well with that of Spruce CTMP. Moreover, the shive content of birch CTMP produced using the high temperature technique was lower than that of spruce CTMP at a given bulk. A new laboratory technique ʹthe shavings methodology was used in combination with multivariate data analysis to investigate the effect of various pre‐treatments on native wood brightness. This method looks directly on the changes in brightness of the green wood as such. It revealed that the brightness of green birch wood is sensitive to increases in relative humidity and temperature. It also indicated that using a relatively high pre‐heating temperature (~140–155°C) when manufacturing birch CTMP is not necessarily detrimental to pulp brightness, provided the chemical charge is properly adjusted. However, at very high temperature (>160°C), the time in the pre‐heater should be kept short. Measurement of frictional behaviour, at simulated CTMP conditions, showed that the coefficient of friction of birch was greatly affected by chemical modification. Thus extraction raised the coefficient of friction. This rise can probably be attributed to reduced lubrication by the extractive substances and to the higher moisture content in the extracted samples. Sulphonation of the birch samples with 3 % Na2SO3 and 2 % NaOH (pH 13.5) gave a local maximum around 140–155°C. The local peak may be correlated with the reduction in energy consumption when the pre‐heating temperature is increased in the production of birch CTMP. Birch wood and spruce wood are also shown to have distinct differences in frictional performance. The coefficient of friction between birch and steel is higher than that between spruce and steel. The high stiffness and density of the birch wood and differences in the amount and composition of birch and spruce extractive substances probably account for the observed variations.

  • 21559.
    Vesterlind, Eva-Lotta
    et al.
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences.
    Höglund, Hans
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences.
    A method to optimise birch CTMP pre-treatments by direct measurement of brightness on birch wood2006In: Nordic Pulp & Paper Research Journal, ISSN 0283-2631, E-ISSN 2000-0669, Vol. 21, no 3, p. 419-425Article in journal (Refereed)
    Abstract [en]

    It is challenging and quite difficult to optimise the pre-treatment of birch CTMP with respect to brightness in large-scale trials. Because of the complexity of the system, it is necessary to go beyond a two-dimensional experimental approach (where not more than two variables are varied at the same time) to find optimal conditions. This paper presents a straightforward laboratory technique that may be used to study the effects on the brightness of wood by various pre-treatments. Combining this methodology with multivariate data analysis provides a powerful tool for optimising birch CTMP pre-treatment with respect to brightness. Recommendations within the experimental domain are given.

  • 21560.
    Vesterlind, Eva-Lotta
    et al.
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences.
    Höglund, Hans
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences.
    Chemitermomechanical pulp made from birch at high temperature2006In: Nordic Pulp & Paper Research Journal, ISSN 0283-2631, E-ISSN 2000-0669, Vol. 21, no 2, p. 216-221Article in journal (Refereed)
    Abstract [en]

    The inherent stiffness of birch wood-fibres makes birch an excellent raw material in the manufacture of high bulk pulp. By a combination of chemical impregnation of birch chips and pre-heating of the chips to high temperature prior to refining, it is possible to manufacture CTMP with very high bulk using a low energy input. Trials revealed that the high pre-heating temperature lowers the energy consumption considerably. At 500 ml CSF an increase in the pre-heating temperature from 110C to 160C reduced the energy consumption by more than 40 %. Despite the low energy input, the shive content remained low or was even reduced and the internal bond strength, in terms of Scott-Bond, compared favourably with Spruce CTMP. In summary, a high pre-heating temperature can be used to manufacture birch CTMP with very high bulk, at a low energy consumption.

  • 21561.
    Vesterlind, Eva-Lotta
    et al.
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences.
    Höglund, Hans
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences.
    High Temperature Birch CTMP2005In: Proceedings. SPCI International Conference 2005, Stockholm, Sweden, June 14-16, 2005Conference paper (Other academic)
    Abstract [en]

    The inherent stiffness of birch wood-fibres makes it an excellent raw material in the manufacture of high bulk pulp. By a combination of chemical impregnation of birch chips and pre-heating of the chips to a high temperature prior to refining, it is possible to manufacture CTMP with very high bulk with a low energy input. The bulky pulp obtained is low in shive content and is a suitable choice for the middle-layer of multi-ply board.

  • 21562.
    Vesterlind, Eva-Lotta
    et al.
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences.
    Höglund, Hans
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences.
    Kolar, M
    Bergström, J
    Low Energy Birch CTMP in Bulky Paper Products2005In: Proceedings. International Mechanical Pulping Conference 2005, Oslo, Norway., 2005Conference paper (Refereed)
    Abstract [en]

    The effects of high pre-heating temperature (³ 140°C) of birch chips to produce high freeness CTMP have been investigated. The trials revealed that high pre-heating temperature lowers the energy consumption e.g. at 500 ml CSF an increase in temperature from 110°C to 160°C reduced the energy consumption by more than 40 %. Despite the lower energy input, shive content remained low or was even reduced and the internal bond strength, in terms of Scott-Bond, was well in comparison with Spruce CTMP. In summary, high pre-heating temperature can be used to manufacture low energy pulps with very high bulk.

  • 21563.
    Vesterlund, Caroline
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences.
    Daily movement patterns of common crane (Grus grus) during the staging period in lake Kvismaren2013Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
  • 21564.
    Vesterlund, Elias
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information and Communication systems.
    Reporting application at SDC: A low bandwidth mobile application2014Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    The objective of the report is to investigate which kind of mobile appli-cation, native, hybrid or web, that is the best regarding cross-platform support compared to development cost. As there are little information regarding pure web applications for mobile devices a prototype will be constructed to give light in this technology. The prototype should an-swer the questions if it can save a year's usage in the cell phones memory, if it is possible to have support for 100 percent of Sweden area and generally if this approach would suffice. There are also some physi-cal restrictions on the web application. A login must be done in less than 5 second, fetch TOs( timber orders) within 10 seconds, report a row within 5 seconds. This in a 2G environment, in Telias network, which is mostly likely to be used in the forest. To easily test the application the CPN-tools(colored petri nets) are used to graphically model the applica-tion and simulations are thereafter done to get a scenes how the applica-tion would perform during many years of usage. To construct have been constructed with the aid of open web technologies as HTML5,CSS4, JavaScript, JQuery and JQuery mobile. The prototype used asynchronies communication to mask loss of coverage and long loading times. It also utilized HTML5 localStorage to save TOs and employer information so that minimize the need for fetching information many times. The proto-type application cannot be used in 100 percent of Sweden's area because the cellular coverage is not present in big areas in the north of Sweden. Therefore information is stored locally but after the pre fetched work orders are completed new work orders must be fetched where cellular coverage is present. The application still have a big usage area and as most wood products comes from the middle of Sweden this cannot be seen as a big problem. To save a year's usage of data on the other hand is not a problem at all. About 10 percent of the available 5 MB of storage in the HTML5 localStorage would be needed. It did also with ease handle the time limitations. As a conclusion the need for a web applica-tion, for SDC, is only present if both IVR and web reporting through a computer is if these services are liquidated in the long run. There are a bit more work with creating a hybrid native/web application using third-party applications but it in turns would give a better coverage area as that kind of application can pre download all TOs and employers ignoring any limitations in storage. This is not possible to do as a pure web application can't be run in the background on the phone.

  • 21565.
    Vesterlund, Niklas
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences.
    Hjälparm för timmerstockshantering: Mekanik för att låsa fast och hantera grova trästockar inför kapningsarbete2015Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The purpose of the assignment was to design a new component within a product of the forest industry. A new sawmill of larger proportions required a new method of holding and handling lumber with profile dimensions reaching 0.6 by 0.45 meters. Some requirements of the solution included a certain operating range, a specific amount of re-quired force against the lumber and a solution of limited size for advan-tageous implementation. Multiple studies were conducted to find a suitable solution and following some qualified evaluations, a potential expedient involving trapezoidal thread forms was found. The solution revolved around two levels of trapezoidal threads with nuts that moved independently, each nut containing an axle of which upholds a metal rod. The rod will be in contact with the wood and have the ability to lean and follow the independent nuts due to a slot in the rod around the upper axle, giving the rod an operating range surpassing the require-ments. Further calculations determined the dimensions of the entire packet including internal components and expected forces on key parts within the solution, which concluded that the given design could handle all specified demands. The design and its different iterations was then drawn within the software IronCAD and implemented on the existing sawmill. Concluding the assignment, the solution was deemed practical and viable to live up to the given demands and even surpass the most essential requirements.

  • 21566.
    Vesterlund Rådström, Camilla
    et al.
    Mid Sweden University, Faculty of Human Sciences, Department of Education.
    Alexandersson Flodin, Emelie
    Mid Sweden University, Faculty of Human Sciences, Department of Education.
    Matematik utomhus Matematik i utomhusmiljö: En jämförande studie om personals uppfattning om matematik i utomhusmiljö.2016Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
  • 21567.
    Vestfält, Amanda
    et al.
    Mid Sweden University, Faculty of Human Sciences, Department of Nursing Sciences.
    Bergqvist, Jennifer
    Mid Sweden University, Faculty of Human Sciences, Department of Nursing Sciences.
    Min identitet, min kultur, mitt livPsykisk ohälsa hos samer - en litteraturöversikt2017Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
  • 21568.
    Vestin, Erika
    Mid Sweden University, Faculty of Human Sciences, Department of Social Work.
    Betydelsen av en integrerad modell med gymnasieskola och LSS-boende för ungdomar med högfungerande autismspektrumdiagnoser.2011Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Denna undersökning har belyst utvecklingen av självständighet hos ungdomar med högfungerande diagnoser inom autismspektrumet. Ett mål för insatserna inom LSS och för gymnasieskolan är att individerna ska utveckla självständighet. I denna undersökning har två olika modeller jämförts. Den ena modellen utgörs av LSS-boenden med en integrerad gymnasieskola och den andra modellen utgörs av LSS-boenden utan någon integrerad gymnasieskola. Syftet var att undersöka om det finns några skillnader mellan dessa modeller när det gäller de boendes utveckling av självständighet. ”De boende” står för de ungdomar som bor i LSS-boendena. Metoden har varit strukturerade intervjuer, utförda med personal och verksamhetsansvariga på varje LSS-boende som medverkat i undersökningen. Den tydligaste skillnad som finns mellan de olika modellerna av LSS-boenden är i sysselsättningen efter boendetiden på LSS-boendet. Intervjupersonerna i den integrerade modellen angav att eftergymnasiala studier var vanligast för deras tidigare boende. De flesta intervjupersoner i den icke-integrerade modellen angav att skillnaderna i sysselsättning för de som bott där var stora. En intervjuperson i den icke-integrerade modellen angav att söka arbete var den vanligaste sysselsättningen för deras tidigare boende. Detta ger indikationer på att den integrerade modellen i större utsträckning än den icke-integrerade modellen kan bidra till att de boende blir mer självständiga, när det gäller sysselsättningen efter boendetiden. Fortsatta studier med ett större urval bör göras inom detta område för att se om ytterligare skillnader kan påvisas.

  • 21569.
    Vestin, Jenny
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences.
    Biogeochemical Interactions between Soil, Soil Solution and Stream Water2007Doctoral thesis, comprehensive summary (Other academic)
  • 21570.
    Vestin, Jenny
    et al.
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences, Engineering and Mathematics.
    Bylund, Dan
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences, Engineering and Mathematics.
    Lundström, Ulla
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences, Engineering and Mathematics.
    Growth and chemical characterisation of Norway spruce grown on alkaline and non-alkaline soilManuscript (Other academic)
  • 21571.
    Vestin, Jenny L K
    et al.
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences.
    Bylund, Dan
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences.
    Lundström, Ulla S
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences.
    The impact of alkaline and non-alkaline parent material on soil solution composition and tree growth: Focus on soils, muntlig presentation 0509152005Conference paper (Other academic)
  • 21572.
    Vestin, Jenny L. K.
    et al.
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences, Engineering and Mathematics.
    Norström, Sara H
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences, Engineering and Mathematics.
    Bylund, Dan
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences, Engineering and Mathematics.
    Lundström, Ulla S
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences, Engineering and Mathematics.
    Soil solution and stream water chemistry in a forested catchment II: Influence of organic matter2008In: Geoderma, ISSN 0016-7061, E-ISSN 1872-6259, Vol. 144, no 2008, p. 271-278Article in journal (Refereed)
    Abstract [en]

    Differences between recharge and discharge areas in soil forming processes and nutrient conditions were observed in an earlier study of a catchment area in central Sweden (63°07′N, 16°70′E; Vestin, J.L.K., Norström, S.H., Bylund, D., Mellander, P-E., Lundström, U.S., submitted for publication to Geoderma. Soil solution and stream water chemistry in a forested catchment, I Dynamics.). To further examine the factors that determine the soil and stream water properties in the catchment area, the present study focused on the organic dynamics and the association of cations to different size fractions of organic matter. Six sampling plots were established in each of the recharge and discharge areas, respectively, with samples taken in June 2004. Dissolved organic carbon (DOC) and cation concentrations in the soil solution and stream water were determined. In the recharge area, low molecular mass (LMM) organics played an important role in transportation of several cations through the soil profile, inducing the podzolisation process by associating with Al and Fe. In the discharge area close to the stream, high molecular mass (HMM) organics appeared to play a crucial role in transportation of cations. Here the majority of recovered cations were associated with HMM organic matter, inhibiting the podzolisation process. The total concentration of C and DOC was higher than in the recharge area, and the concentration of cations increased with depth in the mineral soil. In the stream water, as in the discharge area soil solution, all carboxylic groups were associated to cations. Both Al and Fe were completely associated with the HMM DOC fraction, which indicated a rapid turnover of LMM DOC in stream water. Thus we conclude that DOC plays an important role in soil forming processes, and that its different size fractions have large effects on the transportation of elements in different soils and in stream water.

  • 21573.
    Vestin, Jenny L. K.
    et al.
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences, Engineering and Mathematics.
    Norström, Sara H
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences, Engineering and Mathematics.
    Bylund, Dan
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences, Engineering and Mathematics.
    Mellander, Per-Erik
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences, Engineering and Mathematics.
    Lundström, Ulla S
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences, Engineering and Mathematics.
    Soil solution and stream water chemistry in a forested catchment I: Dynamics2008In: Geoderma, ISSN 0016-7061, E-ISSN 1872-6259, Vol. 144, no 1/2, p. 256-270Article in journal (Refereed)
    Abstract [en]

    Soil solution and stream water chemistry were studied during two years in a catchment in Bispgården in central Sweden (63°07′N, 16°70′E). Soil samples and soil solution were collected in a slope at two distances (10 and 80 m) from a stream. The aims were to examine interactions between recharge (podzol) and discharge (arenosol) areas and to investigate the relations between soil solution and stream water chemistry. The parent material was similar within the catchment, but the content of C and N were higher in the discharge area most likely due to the difference in hydrological conditions compared to the recharge area. Exchangeable cations and base saturation were higher in the discharge area than in the recharge area, which may be due to the higher content of C. The concentrations in soil solution of H, DOC, NO3, SO4, Al, Si, Ca and K charge area compared to the recharge area which was probably caused by transportation of elements in soil and retention due to the increased content of C. During snow melt, the concentrations in soil solution of DOC, SO4, Al, Si, Ca and K were low due to dilution and low biological activity. The concentrations were then increasing during the seasons as an effect of biological activity and mineral weathering. NO3 concentration in soil solution was found in higher concentrations during snow melting and was then diminishing during summer likely as a result of biological uptake. After a dry period followed by an intensive rain in August 2003, the stream water chemistry was markedly altered for a few days. The concentrations of H, DOC SO4, Al and Ca were increased and the concentration of Si was decreased in the stream water. It therefore appeared that the stream water mirrored the upper soil horizons in the discharge area during high flows, while reflecting the lower soil horizons and ground water during low flows.

  • 21574.
    Vestin, Jenny L. K.
    et al.
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences.
    Söderberg, Ulf
    Department of Forest Resource Management, Swedish University of Agricultural Sciences, 901 83 Umeå, Sweden .
    Bylund, Dan
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences.
    Nambu, Kei
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences.
    van Hees, Patrick A. W.
    Eurofins Environm AB, S-53117 Lidköping, Sweden.
    Haslinger, Edith
    AIT Austrian Inst Technol GmbH, Hlth & Environm Dept, A-3430 Tulln, Austria.
    Ottner, Franz
    Univ Nat Resources & Appl Life Sci, Inst Appl Geol, A-1190 Vienna, Austria.
    Lundstrom, Ulla S.
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences.
    The influence of alkaline and non-alkaline parent material on Norway spruce tree chemical composition and growth rate2013In: Plant and Soil, ISSN 0032-079X, E-ISSN 1573-5036, Vol. 370, no 1-2, p. 103-113Article in journal (Refereed)
    Abstract [en]

    This study investigated the influence of contrasting parent materials on tree chemical composition and growth rate under field conditions. On the island of Alno, Sweden, alkaline intrusions are interspersed into non-alkaline gneiss bedrock, which provides a unique opportunity to conduct this study with a minimum of confounding effects. Three plots with alkaline and three plots with non-alkaline parent material were established in a homogenous Norway spruce stand. The chemical composition of soil and soil solution was determined throughout the soil profiles. The chemical composition of bark, wood and needles was determined for each plot, and the latest 5 year basal area growth increment calculated. Concentrations of Ca in needles were correlated with the soil exchangeable Ca levels. Tree growth rate was significantly higher on the alkaline plots and positively correlated with soil concentrations of Ca, Mg, P, and Zn. The tree growth rate also tended to correlate with soil N concentrations, but levelled out for the highest soil N concentrations. Tree growth was enhanced on the alkaline plots and was correlated with several elements. However, none of these elements could be confirmed as the limiting one for tree growth at the current site.

  • 21575.
    Vestin, Jenny
    et al.
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences.
    Nambu, Kei
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences.
    Holmström, Sara J.M.
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences.
    van Hees, P.A.W.
    Jones, D.L.
    Söderberg, U.
    Lundström, Ulla S.
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences.
    The impact of soil parent material on soil chemical conditions, needle composition and tree growth2003Conference paper (Other academic)
  • 21576.
    Vestin, Jenny
    et al.
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences.
    Nambu, Kei
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences.
    van Hees, P. A. W.
    Örebro University.
    Bylund, Dan
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences.
    Lundström, Ulla
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences.
    The influence of alkaline and non-alkaline parent material on soil chemistry2006In: Geoderma, ISSN 0016-7061, E-ISSN 1872-6259, Vol. 135, p. 97-106Article in journal (Refereed)
    Abstract [en]

    The gneiss bedrock at Alnö Island, (62o24N, 17o30E) in the middle of Sweden, has alkaline intrusions interspersed in narrow dikes. This gives an opportunity to study the impact of different parent material on soil solution in a homogeneous spruce stand. In this study, the alkaline parent materials gave rise to a soil solution with significantly (p 0.05) higher concentrations of DOC, SO4, NO3, Ca and Mg compared to the non-alkaline sites. For the deepest mineral horizons, 25-30cm, F and pH were also higher in the alkaline soil solutions. There were almost no differences between the organic horizons at alkaline and non-alkaline sites, probably explained by the influence of litter and recirculation of nutrients. The multivariate analyses emphasized the correlation between the parent material and the soil solution concentrations of Ca, Mg, PO4 and Al. The data were statistically evaluated by t-tests, ANOVA (Analysis of variances), PCA (Principal Component Analysis) and PLS (Partial Least Squares regression).

  • 21577.
    Vestin, Jessica
    Mid Sweden University, Faculty of Human Sciences, Department of Social Sciences.
    Den integritetskränkande brottsligheten mellan ungdomar i Dalarnas län.: En kvantitativ registerstudie av polisanmälningar från år 20122014Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Bakgrund. År 2012 anmäldes 15 070 misshandelsbrott mot ungdomar i åldern 7 till 17 år i Sverige och både internationell och svensk forskning visar att ungdomar är den grupp i samhället som är mest utsatta för brottslighet sett till andel i befolkningen. Att begå brott i ung ålder ökar även risken för brottslig inblandning i vuxen ålder och framtida social utslagning. Syfte. Syftet var att, utifrån polisanmälningar, kartlägga och undersöka den integritetskränkande brottsligheten av ungdomar, mot ungdomar i Dalarnas län under år 2012. Metod. Genom slagning i polisens anmälningssystem Rationell Anmälningsrutin (RAR) och brottsutredningsverktyg Datoriserad Utredningsrutin Tvångsmedel (DURTvå) framkom totalt 194 polisanmälningar om integritetskränkande brott mellan ungdomar i åldrarna 7 till 17 år i Dalarnas län under år 2012. Anmälningarna kodades utifrån ett kodschema skapat för studien och materialet analyserades med avseende på brottstyp, brottsplats, och anmälningsfrekvens över året. Resultat. En signifikant skillnad påvisades mellan andelen inkomna anmälningar som innefattade misstanke om icke-våldsbrott och som innefattade misstanke om våldbrott där majoriteten av anmälningarna utgjordes av våldsbrott. En signifikant skillnad påvisades i förekomst av brottsplats enligt anmälningarna där skolområden och offentliga platser förekom i större utsträckning jämfört med andra typer av brottsplatser. Störst var andel inkomna anmälningar om brott på skolområde vilket utgjorde 35,6% av anmälningarna. En signifikant skillnad i anmälningsfrekvens påvisades mellan höst- och sommarmånaderna med fler inkomna anmälningar under hösten. Diskussion. Resultatet av studien är samstämmigt med tidigare forskning. Skolor utgör en typ av område med hög brottsintensitet och skolkalenderns utformning tycks inverkar på variationen i anmälningsfrekvens. Den sannolika förklaringen till resultatet utifrån brottsmönsterteorin är att skolor är en gemensam aktivitetsknutpunkt för ungdomarna vilket ökar risken för att brott ska inträffa. Resultatet innefattar information som har praktisk betydelse vid planering av brottsförebyggande åtgärder.

  • 21578.
    Vestin, Katarina
    et al.
    Mid Sweden University, Faculty of Human Sciences, Department of Social Work.
    Säll, Ann-Sofie
    Mid Sweden University, Faculty of Human Sciences, Department of Social Work.
    Tre gärningspersoners erfarenheter av medling vid brott2008Independent thesis Basic level (degree of Bachelor), 10 poäng / 15 hpStudent thesis
    Abstract [sv]

    Medling vid brott är relativt nytt i Sverige. Internationell forskning inom området har bedrivits i ca 20 år men svensk forskning inom området är begränsad. Från och med januari 2008 blir alla Sveriges kommuner skyldiga att erbjuda medling vid brott i fall då gärningspersonen är under 21 år. Medling vid brott har sitt ursprung i filosofin om reparativ rättvisa, men har som fenomen främst utvecklats utan direkt teoretisk förankring. Det övergripande syftet med denna studie var att skildra tre gärningspersoners erfarenheter av medling vid brott, samt att beskriva de filosofier och teorier som stödjer medling vid brott och presentera de lagar som reglerar metoden. En enkät formulerades för att ta reda på om ungdomar mellan 13-18 år kände till medling vid brott. För att få reda på gärningspersonernas erfarenheter av medling vid brott användes semi-strukturerade kvalitativa intervjuer, med frågeställningar om varför intervjupersonerna ställde upp, hur medlingsmötet upplevdes och hur de kände innan samt efter medlingen. För att hitta lämpliga intervjupersoner kontaktades medlingsverksamheter runt om i Sverige vilket resulterade i sammanlagt tre intervjuer. Analysen av intervjuerna gjordes utifrån tidigare forskning inom området samt utifrån teorierna om reintegrative shaming och empowerment. Vårt val av teorin om reintegrative shaming grundades utifrån att vi under studiens gång uppmärksammade att denna teori hade hög relevans för ämnet. Valet av teorin om empowerment gjordes efter att vi läst in oss på teorin om restorative justice, då vi fann att delar i denna filosofi kunde sammankopplas med tankegångar inom teorin om empowerment. Resultatet av enkätundersökningen visade att av 169 tillfrågade hade 46 st hört talas om medling tidigare. Resultatet av intervjuerna visade att alla tre intervjupersonerna fått en annan syn på brottsoffret och brottet efter deltagandet i medlingen och upplevde medlingsmötet som positivt.

  • 21579.
    Vestin, Mattias
    et al.
    Mid Sweden University, Faculty of Human Sciences, Institution of education.
    Svensson, Charlotte
    Mid Sweden University, Faculty of Human Sciences, Institution of education.
    "Ja, men jag har svårt för ordet ändå": En studie av förskollärares uppfattningar om att undervisa i förskolan2018Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Sedan förskolans inträde i skolväsendet 1998 så har förskolan gått under svensk skollag och kan därmed betraktas som en undervisande verksamhet. Vad undervisning i en förskolekontext är och hur det ska utformas har det på många håll funnits delade meningar om. Skolinspektionen visade i sin kvalitetsgranskning 2016 att förskollärare och arbetslag upplever denna osäkerhet och som effekt till detta kunde man klargöra att förskolan alltför ofta brister med att expandera innehållet och skapa förutsättningar för utveckling och lärande. Med inspiration av detta har vi utformat en kvalitativ studie som bygger på semistrukturerade intervjuer där vi har undersökt hur sex förskollärare uppfattar undervisningsbegreppet i en förskolekontext samt hur de beskriver den undervisande verksamheten.. Studien blev utförd i tre kommuner i mellansverige med sex förskollärare verksamma på sex olika förskolor. Studien visade att uppfattningarna varierar och delas in i tre huvudsakliga synsätt, att undervisning pågår hela tiden, att undervisning enbart är en planerad verksamhet och att undervisning kan vara både spontan och planerad om en medveten tanke finns. Utöver detta kunde vi även uppmärksamma viss kritik mot undervisningsbegreppet och att man utifrån tidigare erfarenheter skapar en motsättning mellan förskolans verksamhet och undervisning. Framförallt då vissa drog kopplingar till katederundervisning och sin egen skolgång. Den slutsats som därmed kan dras är att uppdraget kan behöva förtydligas, med ett begränsat datamaterial är det svårt att dra några större slutsatser. Däremot går det att anta att ett förtydligat uppdrag skulle resultera att förskolan i större grad lever upp till de förväntningar och krav på undervisning som beskrivs.

  • 21580. Vestlund, Jenny
    et al.
    Langeborg, Linda
    Department of Education and Psychology, University of Gävle, Sweden.
    Sörqvist, Patrik
    Eriksson, Mårten
    Experts on age estimation2009In: Scandinavian Journal of Psychology, ISSN 0036-5564, E-ISSN 1467-9450, Vol. 50, no 4, p. 301-307Article in journal (Refereed)
    Abstract [en]

    The aim of this investigation was to study the biases and accuracy in age estimation of persons selling alcohol. Two experiments are reported, both suggesting that the accuracy in age estimation of Swedish alcohol salespersons is higher than that of control persons. This expertise in age estimation is probably the result of the extensive training Swedish alcohol salespersons go through as a natural part of their profession. Nonetheless, their estimates were not free from bias. Salespersons overestimated the age of target persons below 20 years of age and thus too young to buy alcohol. The results also revealed that controls, in contrast to salespersons, assimilated their estimates towards their own age (i.e. an own-anchor effect). Furthermore, female participants were shown to estimate the age of old target persons (56-65 years) more accurately than male participants. These results are discussed in relation to previous findings on training in age estimation and present jurisdiction.

  • 21581.
    Vestlund, Karin
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Engineering and Sustainable Development.
    Ett mer självförsörjande Norrland: Är det möjligt för Västerbottens län att öka den ekologiska trädgårdsodlingen?2013Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
  • 21582.
    Vestlund, My
    et al.
    Mid Sweden University, Faculty of Human Sciences, Department of Nursing Sciences.
    Nieminen, Viktoria
    Mid Sweden University, Faculty of Human Sciences, Department of Nursing Sciences.
    Sjuksköterskors upplevelser och erfarenheter av att vårda patienter som insjuknat i stroke.2017Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Bakgrund: Stroke är den näst största orsaken till dödsfall och den tredje största orsaken till funktionshinder i världen. Sjuksköterskan är en viktig del i patientens vårdteam. Sjuksköterskor bör hjälpa patienter som insjuknat i stroke att finna mening samt övervinna sitt lidande, vilket kräver en god kommunikation mellan patient och sjuksköterska. Syfte: Belysa sjuksköterskors upplevelser och erfarenhet av att vårda patienter som insjuknat i stroke. Metod: Denna studie är en litteraturöversikt som grundar sig i 15 vetenskapliga artiklar. Artiklarna hittades i databaserna PubMed och Cinahl som sedan analyserades och resultatet från artiklarna delades in i kategorier och subkategorier. Resultat: Sjuksköterskor upplevde svårigheter med att samarbeta inom vårdteamet och arbetsförhållande samt bristande kompetens. Patienter som insjuknat i stroke och deras anhöriga hade stort behov av stöd och tid. Sjuksköterskor strävade efter att prestera sitt bästa samt ge den bästa omvårdnaden och rehabiliteringen som är möjligt. Diskussion: Förbättring av kommunikation krävs både inom teamet och till patienter som insjuknat i stroke för att vården ska bli bättre. Mer utbildning kring strokevård upplevdes nödvändigt då sjuksköterskor upplevde osäkerhet samt kunskaps- och kompetensbrist. Slutsats: Genom denna studie kan brister inom strokevården belysas och diskuteras i hälso-och sjukvården som skulle kunna leda till förändringar och förbättringar vilket gynnar vårdkvaliteten och sjuksköterskors arbetsmiljö och välbefinnande på arbetsplatsen.

  • 21583.
    Vestman, Linda
    et al.
    Mid Sweden University, Faculty of Human Sciences, Department of Education.
    Vestman, Therese
    Mid Sweden University, Faculty of Human Sciences, Department of Education.
    Naturvetenskap i förskolan: Ur pedagogers perspektiv2015Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
  • 21584.
    Vestman Nygårds, Cecilia
    et al.
    Mid Sweden University, Faculty of Human Sciences, Department of Education.
    Herkules, Emelie
    Mid Sweden University, Faculty of Human Sciences, Department of Education.
    Lärprocessen i en samverkan: -en samverkan som står inför ett problem, ingenjörsbristen2014Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Syftet med studien är att beskriva lärprocessen mellan aktörerna som är delaktiga i samverkan Mellanåret. Därav tillämpas två frågeställningar: Varför har samverkan mellan de olika aktörerna i Mellanåret uppkommit? Hur uppfattar de delaktiga aktörerna sin medverkan och sitt samspel i samverkan av Mellanåret?Dessa frågeställningar besvarades med teoretisk ansats samt empirisk material. För att undersöka problemområdet användes en kvalitativ fallstudie som grund i tillvägagångssättet med inspiration från fenomenografi. Vi använde oss av intervjuer baserade på kategorier som ett instrument för datainsamlingsmetod. Dessa intervjuer gjordes med åtta stycken aktörer som är eller varit delaktiga i samverkan Mellanåret. En del av den forskning som finns inom området för denna studie är lärprocesser, interaktioner i samverkan samt det gemensam problem som samverkan Mellanåret står inför det vill säga kompetensbristen inom ingenjörsyrket, sammanfattas i detta arbete. Vi analyserade det material och det resultat vi tagit del av för att belysa lärprocessen mellan de olika aktörerna som är delaktiga i samverkan Mellanåret. Detta sammanställs mot tidigare forskning inom området och presenteras i vår diskussion. Resultatet visade på samtliga delaktiga aktörers lärprocess i samverkan och dess utveckling. Resultatet visar även på vikten av delaktigheten och hur dessa samarbetar för att nå en lösning på problemet - ingenjörsbristen.

  • 21585.
    Vetander, Sofie
    et al.
    Mid Sweden University, Faculty of Educational Sciences. Mid Sweden University, Faculty of Educational Sciences, Department of Education. Mid Sweden University.
    Olofsson, Emma
    Mid Sweden University, Faculty of Educational Sciences, Department of Education.
    Pedagoger och mobbning.: En kvalitativ studie om pedagogers uppfattningar samt beskrivningar av det förebyggande arbetet mot mobbning.2009Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Vårt syfte med uppsatsen var att ta reda på pedagogernas uppfattningar om vad de anser är mobbning samt hur de beskriver deras förebyggande arbete i förskolan och skolan. När vi tittade på tidigare forskning fann vi hur svårt det kan vara för pedagoger att veta vart gränserna för mobbning går samt hur mobbning ska definieras. Vi har även funnit faktorer som visat sig framgångsrika i det förebyggande arbetet bl.a. ett bra samarbete mellan ledning, personal och föräldrar. För att få svar på våra frågeställningar valde vi en kvalitativ metod där åsikter och uppfattningar är grundläggande. Därför valde vi att intervjua åtta pedagoger i förskolan och skolan. Utifrån resultatet och tidigare forskning kan vi se att flera av pedagogerna ansåg att mobbning kan beskrivas som en medveten handling som sker upprepade gånger för att skada. Pedagogerna tyckte också det var svårt att veta vart gränserna för mobbning går. Det förebyggande arbetet såg vi skiljer sig mellan förskola och skola. På förskolan jobbar pedagogerna mer lekfullt för att förebygga medan dem på skolan jobbar mer organiserat i deras förebyggande arbete.

  • 21586. Vetterli, A
    et al.
    Carlsson, F
    Pocock, Tessa
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences.
    Falk, Stefan
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences.
    The effect of salinity on the growth and photosynthesis of a novel psychrophilic and halotolerant Chlamydomonas species from Antarctica2005In: Proceedings. 6th European Workshop Biotechnology of Microalgae, 2005Conference paper (Other scientific)
    Abstract [en]

    The effect of salt on the green alga Chlamydomonas raudensis Ettl (UWO241) was investigated. This physchrophilic alga was discovered in a permanently ice-covered lake in Antarctica in the beginning of the 90's and was then classified as Chlamydomonas subcaudata. A phylogenetic study by Pocock et al. (2004) revealed that this alga was in fact a C.raudensis species. The latter type species was first discovered in an alpine meadow in Czech republic and kept in the SAG culture collection as strain number 49.72. The aim of this study was to use the potential high sensitivity of the extremophile to understand the effect of salinity on photosynthesis of phytoplankton in the oceans, where microalgae play a key role in the carbon cycle on earth. It has to be determined if global warming, which is leading to the melting of the north ice cap and thus to the dilution of the North Atlantic ocean will have a negative impact on algal populations. This study lays the foundations for a larger study, which focuses on the compounds released by these green algae that could potentially counteract the greenhouse effect by increasing the albedo on earth. The study includes a comparison of C. raudensis UWO241 (psychrophilic strain) with C. raudensis SAG 49.72 (mesophilic strain) and the model organism C.reinhardtii, (mesophile). Also none of the latter two are known to be halotolerant. The growth kinetics of the three species has been investigated at different salinities ranging from 2 µM to 200 mM NaCl and between 24°C and 28°C for the mesophiles and from 2 µM to 850 mM at 8°C for the psychrophile. All algae were grown under 20 μmol quanta m-2 s-1 irradiance. Furthermore, chlorophyll a fluorescence was used to determine the stress level caused by the salt on the three species.

  • 21587. Vexler, B
    et al.
    Feng, Tao
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences, Engineering and Mathematics.
    Gulliksson, Mårten
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences, Engineering and Mathematics.
    Adaptive finite element methods for determining the elastic constants of paper from measured displacementsManuscript (preprint) (Other academic)
  • 21588.
    Viberg, Emma
    Mid Sweden University, Faculty of Human Sciences, Department of Health Sciences.
    Frukostfrekvens, fysisk aktivitet, övervikt och sömn bland ungdomar på Jämtlands gymnasium.2014Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Oregelbunden frukostkonsumtion är vanligare bland ungdomar än bland barn under 10 år och vuxna över 65 år. De som ligger i störst riskzon att få frukosten oregelbunden är de ungdomar som sover dåligt, inte utför någon fysisk aktivitet samt är överviktig. Syfte. Syftet med denna studie var att undersöka om ungdomars frukostvanor hade ett samband med fysisk aktivitet, sömn och övervikt. Metod. Femtiofem ungdomar deltog i studien via enkät. Ett Chi 2 genomfördes.Resultat. Majoriteten av ungdomarna åt frukost dagligen. Att inte äta frukost på helger och vara inaktiv hade ett signifikant samband. Att inte äta frukost på veckodagar och sömn hade ett samband, dock inget samband mellan frukostfrekvens på helger och sömn. Övervikt och frukost hade inget samband. Konklusion. Till skillnad från andra studier som fått resultatet att ungdomar äter frukost sällan visade denna studie att frukostfrekvensen var hög bland dessa ungdomar. Sambandet mellan frukost och lite sömn kan också bero på att ungdomar var mer utvilade.  

  • 21589.
    Viberg, Jennifer
    Mid Sweden University, Faculty of Human Sciences, Department of Health Sciences.
    Ortopedingenjörens yrkesparadigm: synen på sitt yrkesutövande, före och efter legitimering2011Independent thesis Advanced level (degree of Master (One Year)), 15 credits / 22,5 HE creditsStudent thesis
    Abstract [sv]

    Ortopedingenjören har rätt till legitimation sedan 1 april 2006. Hur ortopedingenjören upplever denna förändring av yrkets förutsättningar och hur de ser på den egna yrkesprofessionen saknas det i dagsläget kunskap om.

    Syftet med studien var att identifiera och karakterisera ortopedingenjörens yrkesparadigm, det vill säga ortopedingenjörers syn på sin profession och sitt yrkesutövande. Syftet var vidare att ställa ovanstående begrepp i relation till före och efter legitimering.

    Denna studie utfördes med en kvalitativ metod. Fyra fokusgrupper som bestod av fyra till sex legitimerade ortopedingenjörer i varje grupp intervjuades med Nominalgruppteknik (NGT). Genom kvalitativ innehållsanalys identifierades 19 kategorier som sammanfördes i sex teman. Dessa sex teman som framkom relaterades till Törnebohms paradigmteori: Intresse, Kompetens, Världsbild och Verksamhetssyn. Resultatet visade att respondenterna upplevde att det är viktigt med uppföljning och utvärdering av ortopedtekniska behandlingar, men att det idag saknas möjligheter inom ramen för yrkesprofessionen att utföra detta på grund av tidsbrist. Vidare visade studien att det finns skillnader mellan respondenternas etiska medvetenhet och uppfattning om hur långt det egna ansvaret sträcker sig som legitimerad ortopedingenjör. Slutsatsen blir att det är viktigt att ortopedingenjörerna tar ett personligt ansvar och att verksamheten ta sig tid för uppföljning och utvärdering. Det är också viktigt att de etiska reglerna klargörs.

  • 21590.
    Viberg, Olov
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Quality Management and Mechanical Engineering.
    Beräkning på översträckning av skruv i samband med lossning: En studie av Nord-Locks kamlåsbrickor2018Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Nord-Lock är ett företag som tillverkar   kamlåsbrickor till skruvförband. Dessa brickor låser skruvförbandet   geometriskt och för att lossning ska kunna ske krävs det att skruven töjs   något. I detta arbete har den töjningen undersökts för att fastställa om det   föreligger risk för att skruven går sönder vid användande av korta   skruvlängder i kombination med Nord-Locks låsbrickor. Detta görs för att ta   fram riktlinjer till Nord-Locks framtida produktutveckling samt att verifiera   brickornas funktion. Arbetet har bestått av teoretiska beräkningar samt   praktiska mätningar. De praktiska mätningarna har gjorts på brickornas   deformation efter lossning och på den kraftökning skruven upplever vid   lossning. Detta har gjorts för att kontrollera den kvarvarande kamhöjden samt   den egentliga kraftökning som orsakas av töjningen.  Resultatet av de teoretiska beräkningarna   och de praktiska mätningarna skiljer sig åt, därför görs ansatser för att korrigera   de formler som använts. Intressanta områden för vidare undersökning   identifieras då intryckningen av brickan i underliggande material bortsetts   från i denna studie men tycks ha stor inverkan på skruvens totala   kraftökning. Resultatet av studien visar att för stora toleransgränser vid tillverkning   av kamlåsbrickor kan leda till att risken för att skruven går sönder ökar   kraftigt. Detta sker då väldigt små töjningar orsakar stor spänning i   skruven. Risken för att skruven går sönder vid verklig användning är dock   liten då en stor del av den töjning som krävs tas upp i deformationer i   brickan samt underliggande material. Störst risk föreligger vid användning av   små skruvdimensioner då dessa är känsligare för spänningsökning.

  • 21591.
    Vickman, Sara
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.
    Vidareutveckling av SAFOR: En utredning av ramverket SAFOR för operationell risk inom banker2011Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The investigation deals with a framework named A Systemic Approach Framework for Operational Risk (SAFOR). The aim is to concretize SAFOR and Evaluate the proposed method of Damage Evaluation and Effective Prevention (DEEP) in combination with the decision tool DecideIT. SAFOR deals with operational risk which is linked to the company's processes, people and systems. The framework is based on a holistic approach, which reduces overlap in risk management and consists of four modules which deal with; identification of risk and risk manage-ment structure, risk-reducing alternatives, risk measurement and interval estimates. The DEEP-method handles Identification of risk and Evalua-tion of future scenarios. DecideIT implements the DELTA-method which handles interval assessments for probabilities and values together with Sensitivity Analysis. The investigation was by Literature Studies and a test. A process perspective is proposed to increase the applicability of SAFOR. It discovered that the DEEP-method intersects the framework´s modules. Investigation of the framework´s uncertainty module reveals its aim to sort decision alternatives and that the method and decision tool applied in it should deal with uncertainties, future scenarios and be easy to use. This proved to be true for the DEEP-method and DecideIT by a test. SAFOR is suited to be a source for understanding the whole-ness and various methods can be implemented inside the framework to increase flexibility. The objective of the study is achieved but there is a need for further effort with interfaces and Testing methods within the framework. 

  • 21592.
    Vickman, Sara
    et al.
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.
    Larsson, Aron
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.
    Olsson, Leif
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.
    Prerequisites for decision aid in socially responsible investment appraisals2012In: International Journal of Engineering Management and Economics (IJEME), ISSN 1756-5154, E-ISSN 1756-5162, ISSN 1756-5154, Vol. 3, no 4, p. 359-377Article in journal (Refereed)
    Abstract [en]

    This paper explores investment appraisals restrained by various sources of uncertainty and influenced by socially responsible investment (SRI) thinking. Of particular interest in this paper is to assess the additional aspects of investment appraisals that derive from SRI thinking together with the multiple sources of uncertainty arising in such decision problems. We assess characteristics of how managers' try to account for corporate social responsibility, how they cope with evaluating upon objectives beyond monetary return on investment and how they manage uncertainty and the source of the uncertainties they emphasise. We conclude that organisations are generally exposed to and also consider both aleatory and epistemic uncertainty. There is a mix of macro and micro variables creating a diversified environment where valuation methods such as real options in combination with decision analysis modelling could help in structuring the problem and provide informed decision making.

  • 21593.
    Vickman, Tomas
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Chemical Engineering.
    Integration av solvärme med befintligt fjärrvärmesystem: Ett samarbete med HW hotell och restaurang2015Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    HW hotell och restaurang uses district heating from Härnösands Energi & Miljö AB (HEMAB). The projects goal is to investigate the possibility to combine this solution with heat from solar panels. The purpose is to show whether it is possible to reduce heating costs for businesses by combining the existing district heating solution with solar energy. The solar heating system should be configured to give the shortest payback time. The method used is to do a case study on HW Hotell och Restaurang. Information has been collected through observations, measurements, interviews and literature studies. The information has been processed and compiled into a final result. 216 square meters of the roof have good conditions for solar panels and there are another 903 square meters if needed. In the basement there are 13 square meters of room for storage tanks and the maximum tank volume is estimated to be eight cubic meters. Solar heat can be connected to the facilities heating system as a pre heater. The annular heating requirement is 155 megawatt hours of which 34 megawatt hours are for tap water. Excess heat can be sold to the district heat supplier for 400 SEK per megawatt hour. The solar heat system is designed to cover the summer load which will be about half of the annular tap water usage. Eight different solar heat systems have been compared.  The compared systems have different power and investment costs. The annular produced heat is in the range from 4 to 34 megawatt hours with an investment cost between 88 560 and 370 291 SEK. The annual savings could be from 2 825 to 18 288 SEK. Svesol Favorit Max 18 is the best option and pays back in 11.6 years without interest rate. It takes 20.4 year to pay back the investment with an interest rate of five percent. HW Hotell och Restaurang should not invest in solar heating due to long payback time.

  • 21594.
    Victorin, Sofia
    Mid Sweden University, Faculty of Human Sciences, Department of Health Sciences.
    Livskvalitet vid systemisk lupus erythematosus (SLE)2008Independent thesis Basic level (degree of Bachelor), 15 poäng / 22,5 hpStudent thesis
  • 21595. Vidal, D.
    et al.
    Zou, X.
    Uesaka, Tetsu
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences.
    Modelling coating structure development: Monte-Carlo deposition of particles with irregular shapes2004In: Nordic Pulp and Paper Research Journal, ISSN 0283-2631, Vol. 19, no 4, p. 420-427Article in journal (Refereed)
    Abstract [en]

    There is an increasing interest in enhancing coated

    paper performance by combining the unique properties of

    various pigments, i.e. developing multi-pigment coating formulations.

    An understanding of the synergy between pigments of

    different sizes and shapes is therefore becoming critical. The

    literature on this subject is rather empirical and fragmentary. In

    this report, we introduce an improved 3D Monte-Carlo deposition

    model to simulate coating structure development for irregularly

    shaped particles. The model relies on the minimization

    of the total energy of the particle system, which is defined as a

    sum of three terms: a pair interaction that accounts for collisional

    interactions, a gravitational potential energy, and a drag

    potential energy that takes into account the drainage rate of the

    colour. The model predicts that pigments with higher aspect

    ratios give a more porous structure and a smoother surface

    when applied at high solids content. Coating at low solids content

    (<45-55%) is shown to produce “looser” and more disordered

    structures, especially in the case of platelet pigments like

    clay. These results agree with practical and experimental observations.

    When blending clays with calcium carbonates, the

    model predicts the occurrence of maximum pore volume and

    surface micro-roughness at specific mixing ratios. The location

    of these maxima varies significantly with the particle’s aspect

    ratio, the relative size of the blended pigments, and the solids

    content of the suspension. With further experimental validation,

    this model has the potential of being used as a tool for designing

    and optimizing coating formulations.

  • 21596. Vidal, David
    et al.
    Uesaka, Tetsu
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences, Engineering and Mathematics.
    Smoothed Dissipative Particle Dynamics Model for Predicting Self-Assembled Nano-Cellulose Fibre Structures2010In: 2010 Tappi International Conference on Nanotechnology for the Forest Product Industry, 2010Conference paper (Refereed)
  • 21597.
    Vieira, O. A. D.
    Mid Sweden University, Faculty of Human Sciences, Department of Tourism Studies and Geography.
    Developing edu-tourism in an urban indigenous community: The case of Aldeia Bananal (Brasília - DF - Brazil)2018In: International Journal of Tourism Anthropology, ISSN 1759-0442, E-ISSN 1759-0450, Vol. 6, no 2, p. 133-153Article in journal (Refereed)
    Abstract [en]

    The indigenous tourism project developed at Aldeia Bananal, a community located in Brasília, Brazil, and composed of three ethnic Indian groups - Kariri-Xokó, Tuxá and Fulni-ô - was combined with educational tourism by bringing tourism graduation students to visit the community. The theory is mainly based on the concepts of staged authenticity for community empowerment, geotourism and ambience generation. It was applied the ethnographic method, which aimed at preparing and evaluating the visit in an indigenous context. Some conclusions taken for the community side were that they were at all times very positive towards the research; they spread their culture in a tense political moment - due to the pressure of real estate capital - and enhanced their cultural heritage, although not so much the environmental aspect. For the students the project created a unique contact with the indigenous group which led to a higher knowledge and valorisation of their culture. 

  • 21598.
    Vigante, Baiba
    Mid Sweden University, Faculty of Human Sciences, Department of Education.
    Utvecklingssamtal ur vuxna elevers perspektiv:: Hur elever inom vuxenutbildningen med annan skolbakgrund än den svenskaupplever utvecklingssamtalet2015Independent thesis Advanced level (professional degree), 10 credits / 15 HE creditsStudent thesis
  • 21599.
    Vigetun, Helena
    et al.
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Engineering and Sustainable Development.
    Appelberg, Jonas
    Sundsvall Hospital.
    Forsberg, Tomas
    Kaldensjö, Magnus
    Schagatay, Erika
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Engineering and Sustainable Development.
    Diving response and Hb elevation during voluntary apnea in patients with obstructive sleep apnea.2011In: SFSS congress proceedings, 2011Conference paper (Refereed)
  • 21600.
    Vigetun-Haughey, Helena
    et al.
    Mid Sweden University, Faculty of Human Sciences, Department of Health Sciences. Capio St Gorans Hosp, Dept Clin Physiol, Stockholm, Sweden.
    Appelberg, Jonas
    Sundsvall Hosp, Dept Res & Dev, Vasternorrland Cty Council, Sundsvall, Sweden.
    Forsberg, Tomas
    Mid Sweden University, Faculty of Human Sciences, Department of Health Sciences.
    Kaldensjö, Magnus
    Mid Sweden University, Faculty of Human Sciences, Department of Health Sciences.
    Schagatay, Erika
    Mid Sweden University, Faculty of Human Sciences, Department of Health Sciences.
    Voluntary apnea evokes diving responses in obstructive sleep apnea patients2015In: European Journal of Applied Physiology, ISSN 1439-6319, E-ISSN 1439-6327, Vol. 115, no 5, p. 1029-1036Article in journal (Refereed)
    Abstract [en]

    Two potentially protective responses to apnea were studied in obstructive sleep apnea (OSA) patients; the diving response and the increase in Hb concentration [Hb] via spleen contraction. Eight OSA patients and ten healthy controls performed apneas in air (A) and apneas with facial immersion in 15 A degrees C water (FIA) after inspiration and without prior hyperventilation. In each condition, subjects performed three apneas of maximal voluntary duration spaced by 2 min of rest. Cardiorespiratory parameters were measured non-invasively, and venous blood samples for [Hb] analysis were drawn before and after apneas. Mean (SD) apnea durations were similar between groups (NS). In controls, the heart rate (HR) reduction was 10 +/- A 10 % at apnea and 19 +/- A 10 % in FIA (P < 0.05). In OSA patients, however, the fall in HR was the same in both conditions, 13 +/- A 10 and 14 +/- A 8 % for A and FIA, respectively (NS). In controls, the [Hb] increase was the same in A and FIA (2.2 +/- A 2.9 and 2.1 +/- A 2.2 %), while in OSA the [Hb] increase was greater during FIA compared to A (3.3 +/- A 2.2 and 1.4 +/- A 0.9 %; P < 0.05). Apnea induces a diving response and [Hb] increase in both groups. OSA patients did not show the typical training effect of the diving response seen in apnea divers despite their frequent nocturnal apneas. However, they also deviated from normal controls in response pattern; face immersion enhanced the cardiovascular diving response in controls but not in OSA, while the hematological response was enhanced by face immersion only in OSA patients.

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