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  • 351.
    Jager, Urban
    et al.
    Växjö University, Faculty of Mathematics/Science/Technology, School of Technology and Design.
    Lindholm, Jacob
    Växjö University, Faculty of Mathematics/Science/Technology, School of Technology and Design.
    Lärarnas yrkesidentitet en utveckling eller avveckling ?: En studie i hur gymnasielärare upplevt förändring i sin yrkesidentitet2009Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Under de senaste decennierna har gymnasieskolan genomgått förändringar. Debatten om skolan har varit offentlig.

    Med utgångspunkt från en socialkonstruktivistisk forskningsprofil. Syftar studien i, att undersöka om gymnasielärare upplever i relation till dessa förändringar, om deras yrkes-identitet har stärkts eller försvagats.

    Undersökningens grund vilar inom den kvalitativa metodologin. Sex kvalitativa intervjuer utgör basen i studien. Den teoretiska bakgrunden avser förtydliga begreppen identitet, yr-kesidentitet samt ge en bild av några av de förändringar som har skett.

    Vid sammanställning och analys av rådata har transkriberingar och ad hoc använts som analysmetod. Ad hoc har givit oss frihet att använda oss av den analys som för tillfället varit lämpligast. Det innebär att tillvägagångssättet varit eklektiskt.

    Studien visar att lärarna upplever att deras yrkesidentitet har försvagats, eller status som de föredrog att använda sig av som begrepp. Förändringarna är inget som enskilda lärare har drivit. De känner sig istället påtvingade dessa förändringar av politiker och tjänstemän.

  • 352.
    Jakesevic, Ivana
    et al.
    Växjö University, Faculty of Mathematics/Science/Technology, School of Technology and Design.
    Johansson, Frida
    Växjö University, Faculty of Mathematics/Science/Technology, School of Technology and Design.
    Konceptutveckling av lastkännande dragkrokshållare2007Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    This diploma work is a development project of towing hook holders manufactured by Thule Sweden AB. The hook holders can be used as a bike holder or a load holder. Since the products got limits on how heavy load they can carry, a load sensing system would be useful to the user. The system would help the user not to overload the hook holders. A signal in form of light should indicate that the hook holders are overloaded. Conceptual solutions have been developed and these solutions include mechanical and electrical measurement systems. The mechanical measurement system in this project is based on feathers and the electrical solutions is based on load cells and strain gages. In the end it showed that the concepts build on strain gage are the best solutions for the product, since they fulfill the requirements where the price is an important factor.

  • 353.
    Jakobsson, Erik
    Växjö University, Faculty of Mathematics/Science/Technology, School of Technology and Design.
    Slamfärger och dess miljöpåverkan2007Independent thesis Basic level (professional degree), 5 credits / 7,5 HE creditsStudent thesis
    Abstract [en]

    The paint market of today is a jungle whit an enormous range of different paint types; there all has different properties and different compositions, some with big influence on the environment and some whit less influence on the environment. It could even be difficult for an expert to always know what should be used on which surface and what would be the best out of the environmental point of view.

    This work is not intended as a total review of all the manufactures range of colours; only as a deeper dissertation about distemper paint in general, in particular Falu Red Paint. Whit focuses on the environmental issues.

    The work is especially for those who are ready to paint but don’t know what paint they should chose and people that has a interest in paint and environment, perhaps it also could be of interest for professional painters even when there probably isn’t any big news for them. The information is compiled from the Internet and downloaded brochures from the Internet.

  • 354.
    Jakobsson, Rikard
    et al.
    Växjö University, Faculty of Mathematics/Science/Technology, School of Technology and Design. Skog och Trä.
    Zida, Didier
    Sawadogo, Patrice
    Comparison of household income from wood and cotton in Bekuy and Satiri regions in Burkina Faso2008In: Small scale rural forest use and management: Global policies versus local knowledge. IUFRO international symposium, Gerardmer, France 23-27 June 2008., AgroParisTech-ENGREF, Nancy , 2008Conference paper (Refereed)
  • 355.
    Jakopson, Andreas
    et al.
    Växjö University, Faculty of Mathematics/Science/Technology, School of Technology and Design.
    Gustavsson, Peter
    Växjö University, Faculty of Mathematics/Science/Technology, School of Technology and Design.
    Seniorboendets utformning: En handledning vid utformning av seniorboenden2005Independent thesis Basic level (degree of Bachelor)Student thesis
    Abstract [en]

    The main purpose with this diplomawork is to make an easy handbook in how too shape senior livening apartments. In this report we have made interviews with persons who all have a different part in these livening. The interviewed persons are an architect, a pensioner and a senior home working person. These three different perspectives in the subject along with the theories has given us, what we think, a good ground to work on. This information along with our own ideas has lead to final result in what you should be aware of when you are about to give a final shape to these kind of livening apartments.

  • 356.
    Jarnerö, Kirsi
    et al.
    SP Sveriges Tekniska forskningsinstitut.
    Johan, Vessby
    Växjö University, Faculty of Mathematics/Science/Technology, School of Technology and Design.
    Gustafsson, Åsa
    Växjö University, Faculty of Mathematics/Science/Technology, School of Technology and Design.
    Rask, Lars-Olof
    Växjö University, Faculty of Mathematics/Science/Technology, School of Technology and Design.
    Erfarenheter av logistik- och montageprocessen vid byggande av höga flerbostadshus med trästomme: Del 1 : Probleminventering vid projekt Limnologen, Växjö, 20072008Report (Other academic)
    Abstract [sv]

    Föreliggande rapport är den första av tre planerade avrapporteringar kring erfarenheter av att bygga höga flerbostadshus med trästomme. Forskningsprojektet har sin empiriska bas i Midroc´s bygge av fyra åttavåningars hus för bostadsrätter vid Trummens strand i Växjö.

    Projektet är en del av insatser från Nationella Träbyggstrategin och Centrum för Byggande och Boende med Trä (CBBT) för att öka kunskapen om modernt stort träbyggande.

    Projektet har finansierats av Nationella Träbyggstrategin, CBBT, Växjö universitet och SP Trätek.

  • 357.
    Jeppsson, Jimmy
    Växjö University, Faculty of Mathematics/Science/Technology, School of Technology and Design.
    Ultimat - Handbagage med sittfunktion2005Independent thesis Basic level (degree of Bachelor)Student thesis
    Abstract [en]

    The hand luggage Ultimat is adapted to the airlines rules about luggage. Ultimat is 45*35*20 cm. You can carry it, roll it and rest on it. You can in other words sit on it. Ultimat is developed from theorys about, colour, form and stress.

  • 358.
    Johanna, Liedes
    Växjö University, Faculty of Mathematics/Science/Technology, School of Technology and Design.
    Kärl på björkskiva2004Student paper second termStudent thesis
    Abstract [en]

    From the start I was aware of the project as most of all an opportunity to get to know a new material and a new environment as well as a practice in a new kind of workingsituation. The project itself was more than just the visible glassobjects that eventually would be produced. The main goal was for me to find an area where glass-products were not too exploited, and where the glassmaterial could be motivated for it´s special qualities, hardness, transparency, it´s lightrefraction and beauty.

  • 359.
    Johannesson, Maria
    et al.
    Växjö University, Faculty of Mathematics/Science/Technology, School of Technology and Design.
    Voicu, Hector
    Växjö University, Faculty of Mathematics/Science/Technology, School of Technology and Design.
    Införande av visköst hyttgummielement på ramstyrda dumprar, möjligheter och konsekvenser2004Independent thesis Basic level (degree of Bachelor)Student thesis
    Abstract [en]

    This Thesis work is performed at Volvo Articulated Haulers AB in Braås, Sweden. The assignment involves investigation of consequences and possibilities when introducing a new viscous mount for the hauler models A35/A40D.

  • 360.
    Johansson, Anna
    Växjö University, Faculty of Mathematics/Science/Technology, School of Technology and Design.
    Metod för utvärdering av simuleringsverktyg inom telekommunikation2003Independent thesis Advanced level (degree of Master (One Year))Student thesis
    Abstract [en]

    The area within telecommunication is rapidly growing, the demands of functions and the number of users. This makes the net of communication more and even more complex. This complexity makes it difficult to receive indications of the reliability of the net. A possible solution to this might be to simulate the situation. It is of great importance to study the reliability of the net because this influences the grade of quality of service and therefore a high reliability is wanted. Today there are many simulation tools on the market, in different price range and with different functions and possibilities.

  • 361.
    Johansson, Emelie
    Växjö University, Faculty of Mathematics/Science/Technology, School of Technology and Design.
    Energideklarationen, vinst eller förlust för ägare av äldre småhus?2007Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    October 1st, 2006 a new law (SFS 2006:985) was given effect. The purpose of this law is to confirm a buildings’ specific energy consumption by showing an energy declaration. The declaration shows how much energy the specific building consume and what kind of measures that can be recommended to reduce the energy consumption.

    In this diploma work, Ihave tried to answer the question: What happens to older buildings that have a high transmission loss through walls, attic and foundation caused by thin insulation and bad windows?

    The calculations for this report are based on a dwelling house build in 1959. The main task has been to find out what the cost will be and how much money the owner will save by following the recommendations in the report – that is to add insulation material to the construction and to replace the windows.

    It has to be taken into consideration before making any changes to the house that there might be an increase in humidity in sections of the construction if you make the climate shell thicker and more compact.

  • 362.
    Johansson, Henrik
    et al.
    Växjö University, Faculty of Mathematics/Science/Technology, School of Technology and Design.
    Hedberg, Niklas
    Växjö University, Faculty of Mathematics/Science/Technology, School of Technology and Design.
    Stenmjöl eller naturgrus i betong: En jämförande studie2009Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

     

    The objective of this thesis is to examine the difference in workability in fresh concrete, when crushed fine aggregate replaces natural gravel. The shape of the fine aggregate,  packing and flow of six crushed material and three natural materials will be determined by easy studies, the results will be compared with a slump cone test.

  • 363.
    Johansson, Jimmy
    Växjö University, Faculty of Mathematics/Science/Technology, School of Technology and Design.
    Mechanical processing for improved products made from Swedish hardwood2008Doctoral thesis, comprehensive summary (Other academic)
    Abstract [en]

    Swedish hardwood is today used in the energy, pulp and mechanical hardwood industries. Only very small volumes of Swedish hardwood are, however, consumed by the mechanical industry that normally pays the highest timber price. The smallness of the volumes used for mechanical refinement is a result both of forestry not focusing on the production of hardwood for these uses, and of the fact that the mechanical hardwood industry, particularly the sawing industry, is not designed to process the existing raw material in an optimal manner. This thesis discusses the possibilities of improving the conditions for the mechanical refinement of hardwood. The aim of the work has been to investigate the possibilities of developing products and methods for processing of Swedish hardwood.

    The thesis proposes a new manufacturing system for Swedish hardwood to better utilize the inherent properties of the wood material. The system is based on the so-called PrimWood Method and the star-sawing concept. Compared to normally sawn wood, the sawing concept utilizes the raw material more efficiently with regard to volume yield, and increases the distance between knots in the sawn wood. The material produced has vertical annual rings which give the wood smaller movements as a result of moisture variations and a different textural appearance. Using the PrimWood Method for hardwood would make it possible to more closely match customer requirements regarding hardwood products.

    Since Swedish hardwood is nowadays mainly used indoors, a possible way of expanding the market would be to increase the outdoor use of the material. Here the durability is of great importance, and one important factor is then the capillary characteristics of the material. The thesis therefore focuses on the characterisation of the capillarity in wood for the future improvement of its durability. It is shown that with the material produced by the proposed manufacturing system, i.e. wood with vertical annual rings, the possibility of using hardwood outdoors increases, because the susceptibility to cracking decreases.

  • 364.
    Johansson, Jimmy
    et al.
    Växjö University, Faculty of Mathematics/Science/Technology, School of Technology and Design. Skog och Trä.
    Gustafsson, Åsa
    Växjö University, Faculty of Humanities and Social Sciences, School of Management and Economics.
    Improved Ecoeffectiveness of interior hardwood products in the house-building industry as a way to promote sustainable forestry2007In: Wood Material Science & Engineering, ISSN 1748-0272, E-ISSN 1748-0280, Vol. 2, no 1, p. 22-32Article in journal (Refereed)
    Abstract [en]

    Sawn hardwood is required by the market to be homogeneous, even in texture and colour, but the products produced by Swedish hardwood sawmills exhibit a wide variation in characteristics. This makes it difficult for hardwood sawmills to find profitable markets for all their products. By developing new products with other properties for the building industry it may be possible to utilize hardwood more efficiently and increase the prices. This would result in higher ecoeffectiveness (defined as value in relation to environmental impact) of the forest-related business system by giving an incentive to grow deciduous forests, which leads to richer biological diversity. Diversity is fundamental to achieving sustainable forestry. At the same time, other less ecoefficient materials in buildings may be replaced. Exploring the requirements of the customers is essential before developing new products, in order to maximize the value of a product. In this study, the requirements of interior hardwood products in the Swedish house-building industry were studied in interviews and through questionnaires. The most important requirements, ranked higher than price, are delivery on time, shape stability, packaged products, rapid delivery and accurate moisture content. The results make it possible to focus on critical factors to gain market shares for hardwood as an ecoeffective building material.

  • 365.
    Johansson, Jimmy
    et al.
    Växjö University, Faculty of Mathematics/Science/Technology, School of Technology and Design.
    Sandberg, Dick
    Linnaeus University, Faculty of Science and Engineering, School of Engineering.
    Ny träteknik höjer värdet på lövskogen2008In: Ekbladet, ISSN 0283-4839, no 23, p. 24-27Article in journal (Other academic)
    Abstract [sv]

    Lövträ är ett uppskattat material i möbler, snickerier och inredningar samtidigt som en stor del av det svenska lövträet av olika anledningar inte utnyttjas för dessa användningsområden. Endast ca. 5 % av den totala volymen lövträ som årligen avverkas blir sågat virke. Motsvarande siffra för furu och gran är 50 %. Istället importeras den största delen av råvaran, men bakom knuten väntar nya spännande nyheter, vilka är ett  resultat av forskningen vid Växjö universitets avdelning för Skog & Trä.

  • 366.
    Johansson, Jimmy
    et al.
    Växjö University, Faculty of Mathematics/Science/Technology, School of Technology and Design.
    Sandberg, Dick
    Växjö University, Faculty of Mathematics/Science/Technology, School of Technology and Design.
    Preparation of wood with pulsed UV-laser ablation for characterisation of the wood structure2007In: Proceedings of Third International Symposium on Wood Machining, Presses polytechniques et universitaires romandes , 2007, p. 191-194Conference paper (Refereed)
    Abstract [en]

    In contrast to mechanical techniques involving cutting with a knife, cutting with a microtome or grinding, pulsed UV-laser ablation is an irradiation technique where a so-called Excimer laser is used, and the process is adiabatic, which means that no or a very little chemical change occurs in the material being processed. Cross sections of samples of Scots pine and Norway spruce which had been exposed outdoors have been prepared with the help of an Excimer laser (wavelength 248 nm) for study in a microscope. UV-laser ablation has been found to be a suitable method of preparation for wood when it is desired to obtain thin sections with little influence on the material, and particularly when dealing with brittle materials, e.g. archaeological wood, biologically-attacked wood or, as in this case, wood which has been exposed outdoors.

  • 367.
    Johansson, Jimmy
    et al.
    Växjö University, Faculty of Mathematics/Science/Technology, School of Technology and Design.
    Sandberg, Dick
    Växjö University, Faculty of Mathematics/Science/Technology, School of Technology and Design.
    The Concept of Value Activation II.: The PrimWood Method for improved properties of hardwood products.2005In: Hardwood research and utilisation in Europe: new challanges / [ed] Bejo, L., Sopron: University of West Hungary , 2005, p. 53-59Conference paper (Refereed)
    Abstract [en]

    The name Value activation refers to the basic understanding of wood, where at present there are properties that are not fully exploited, but with help of a new sawing pattern could be fully utilized. The basic idea lies at an industrial level producing radial sawn timber with good profitability and with lesser and mostly a controllable moisture movement. In short it implies an activation of values of timber that has not been exploited in ordinary industrial production to date.

    This paper gives one example how the basic ideas in the concept of Value activation can be implemented in the industry. A new manufacturing system, the PrimWood Method, producing radial sawn timber, well adjusted to the conditions of the Swedish hardwood sawmill industry is presented. The manufacturing system generates knot and defect-free hardwood products with vertical annual rings.

    Utilizing the proposed manufacturing system in the Swedish hardwood sawmill industry imply an increased focus on hardwood in consumer products, which gain both forestry, sawmill industry and the wood manufacturing industry.

  • 368.
    Johansson, Jimmy
    et al.
    Växjö University, Faculty of Mathematics/Science/Technology, School of Technology and Design.
    Sandberg, Dick
    Växjö University, Faculty of Mathematics/Science/Technology, School of Technology and Design.
    Gustafsson, Åsa
    Växjö University, Faculty of Mathematics/Science/Technology, School of Technology and Design.
    Design of form stable and visually crack free edge-glued oak panels.2005In: Hardwood research and utilisation in Europe: new challanges / [ed] Bejo, L., Sopron: University of West Hungary , 2005, p. 167-171Conference paper (Refereed)
    Abstract [en]

    Edge-glued panels are a very appreciated material, for instance used in cabinet doors or worktops in the kitchen. The surrounding climate for these products is often severe, due to large seasonal variation of the relative humidity in the indoor air. Therefore problems regarding crack formation and form stability often occurs. This paper studies how annual ring orientation of lamellas, lamella width, initial different moisture content in the panels and single lamellas with deviating moisture content are affecting form stability and crack formation of edge-glued oak panels (Quercus robur).

    In the study 47 test samples with different characteristics were tested in varying climate during 182 days. The relative humidity was changed approximately every 14 days in the interval 18 to 88 % and temperature 20˚C. The panels were measured each 7 days regarding form stability factors. The crack formation was measured at the beginning and the end of the test.

    The evaluation of the results show that the annual ring orientation of the lamellas will be a significant factor regarding the form stability factors width changes and cupping of the panels and also regarding the crack formation. The lamella width is important as a significant factor regarding the surface evenness. Moisture content (initial level) will affect both the form stability and the crack formation. The effect of this factor is dependent on the relation to the climate of the surroundings.

  • 369.
    Johansson, Jimmy
    et al.
    Växjö University, Faculty of Mathematics/Science/Technology, School of Technology and Design.
    Sandberg, Dick
    Växjö University, Faculty of Mathematics/Science/Technology, School of Technology and Design.
    Gustafsson, Åsa
    Växjö University, Faculty of Mathematics/Science/Technology, School of Technology and Design.
    Secondary interior wood products for manufacturing in Swedish hardwood sawmills2005In: Hardwood research and utilisation in Europe: new challanges / [ed] Bejo, L., Sopron: University of West Hungary , 2005, p. 162-166Conference paper (Refereed)
    Abstract [en]

    The Swedish hardwood sawmill industry is today in a situation where the sawn hardwood exhibit a wide variation in quality characteristics, while the customers places strict demands. To create a profitable return for all their products the hardwood sawmill industry therefore must find new markets where other quality characteristics are valuable.

    In this study the requirements regarding logistic service and product quality characteristics for secondary wood products used as for instance indoor panelling and mouldings are identified and described. The industrial setting for the study is the Swedish retail and house building industry. The purpose of the study was to study the possibilities to increase the use of hardwoods in these products.

    The study follows a case study methodology. The studied companies consisted of in total nine companies in the southern part of Sweden. Six house-building companies were studied and three retail companies.

    A total of 15 different requirements regarding logistic service and product quality characteristics were identified. The product quality characteristics were related mainly to the aesthetic appearance of the products and to the stability of the product in service. The important logistical service requirements were related to the location and time of delivery and customer-specified orders.

    The results show that adjustment to customer requirements means that a supplier of hardwood products must adjust its organization towards a stronger customer focus. In order to do this a fundamental problem for Swedish hardwood sawmills is the current lack of an accepted quality sorting system for hardwood. It is also important for sawmills to control and adjust their production processes in order to gain increased flexibility and delivery precision.

    With the results from this study a test collection of mouldings and indoor panelling has been developed by a Swedish hardwood sawmill and is now tested by one of the retail companies within the study.

  • 370.
    Johansson, Jimmy
    et al.
    Växjö University, Faculty of Mathematics/Science/Technology, School of Technology and Design.
    Söderström, Ove
    Sandberg, Dick
    Växjö University, Faculty of Mathematics/Science/Technology, School of Technology and Design.
    Capillarity in hardwood: An important factor for hardwood market expansion2007In: The Beauty of Hardwood: Proceedings of third Conference on Hardwood Research and utilisation in Europe, University of West Hungary, Sopron , 2007Conference paper (Refereed)
    Abstract [en]

    The Swedish hardwood sawmills are today experiencing problems of finding profitable markets for products containing for instance knots and red or brown heartwood. By using hardwood outdoors, it would be possible to expand the market of hardwood with new products that may set other requirements on the wood than the present use. In Sweden today, hardwood is normally used in furniture, joinery, floors and kitchens where esthetical requirements are dominant. When considering outdoor use, technical requirements such as durability become more important and especially the capillary characteristics of the wood are of interest. The capillarity determines the ability of the material to absorb and desorb moisture, characteristics that affect the resistance of degrading. 

    In this paper, the capillary characteristics were modelled and studied by exposing the cross section of wood to a free water surface. The study compares two Swedish hardwood species, aspen and oak with pine, a softwood species that is common in Sweden and often used outdoors.

    The results show that the capillary transport mechanism is affected by the microstructure of the wood and the natural ability of the material to close the transport paths in the structure with for instance extractives, tyloses and closed pits. Based on these factors, a characteristic capillary mean radius is introduced to describe the longitudinal capillary water absorption in the studied wood species.

  • 371.
    Johansson, Maria
    et al.
    Växjö University, Faculty of Mathematics/Science/Technology, School of Technology and Design.
    Gullberg, Linda
    Växjö University, Faculty of Mathematics/Science/Technology, School of Technology and Design.
    Förbättrat underhålll genom kvalitetsledningssystemet ISO 9000:2000?2004Independent thesis Advanced level (degree of Master (One Year))Student thesis
    Abstract [en]

    The study is based upon a case study that is accomplished at Ackurat Industriplast AB in Lammhult and a survey investigation among manufacturing companies within the plastic and rubber industry. The purpose of the study was to investigate how ISO 9000:2000 certificated companies within the plastic and rubber industry could improve their maintenance work by using the quality management system ISO 9000:2000. The objective of the investigation was to find out how manufacturing companies maintenance work is affected by ISO 9000:2000 and if manufacturing companies in the future would appreciate more maintenance support in the ISO 9000:2000.

  • 372.
    Johansson, Marie
    et al.
    Växjö University, Faculty of Mathematics/Science/Technology, School of Technology and Design. Byggteknik.
    Al-Emrani, Mohammad
    Jacob, Jubin
    Garzon Barragan, Olga
    Crocetti, Roberto
    Increased stiffness of timber beams with steel and/or CFRP laminates2007In: Proceedings of third international conference on structural engineering, mechanics and computation, 2007Conference paper (Refereed)
  • 373.
    Johansson, Marie
    et al.
    Växjö University, Faculty of Mathematics/Science/Technology, School of Technology and Design. Byggteknik.
    Lassl, Victor
    Löfgren, Patrick
    Engström, Björn
    Kliger, Robert
    Standardised information flow for connections in industrialised construction2007In: Proceedings of ManuBuild 1st International Conference - The Transformation of the Industry: Open Building Manufacturing, CIRIA, Classic House, London , 2007Conference paper (Refereed)
    Abstract [en]

    The ideal open building system is a vision that the building industry should aim at. It means a system that

    combines the industrial efficiency with the traditional flexibility. Such a system would mean individual designs,

    built up with different elements that could be bought from any producer around the world, connected to each

    other with connections from different producers. Even more challenging would be to have components that are

    flexible, compatible with each other and interchangeable at a later date.

    In order for manufacturers of different components to be able to sell their products to a large number of

    contractors; flexible, integrated connections are needed, that also are very easy to use during assembly and are

    cheap and effective to produce. To make this possible it is necessary to find a way to communicate connection

    features and requirements in an easy manner.

    The aim of this paper is to show two strategies, i.e. design-based strategy and function-based strategy, analyse

    them and to produce guidelines on further development of such strategies. The question is which strategy is best

    suited to be used when working with open building systems.

    The final output is the idea of the standardisation of information; the Part Request Form with which the

    performance of connections in term of specifications could be communicated so that it is understandable for

    everyone, from the system owner to the manufacturer of connections.

  • 374.
    Johansson, Marie
    et al.
    Växjö University, Faculty of Mathematics/Science/Technology, School of Technology and Design.
    Olsson, Anders
    Växjö University, Faculty of Mathematics/Science/Technology, School of Technology and Design.
    Grading of sawn timber with dynamic methods – influence of defects2009In: Proceedings of the COST E53 Workshop, Lisbon 22-23 October 2009 / [ed] José António Santos, 2009Conference paper (Other academic)
  • 375.
    Johansson, Marie
    et al.
    Växjö University, Faculty of Mathematics/Science/Technology, School of Technology and Design.
    Ormarsson, Sigurdur
    Technical University of Denmark.
    Influence of growth stresses and material properties on distortion of sawn timber – Numerical investigation.2009In: Annals of Forest Science, ISSN 1286-4560, E-ISSN 1297-966X, Vol. 66, no 6, article id 604Article in journal (Refereed)
  • 376.
    Johansson, Martin
    Växjö University, Faculty of Mathematics/Science/Technology, School of Technology and Design.
    Hårdgörning av Asp2008Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    To make wood harder it can be densified. This can be achieved by compression, the compressed material tends to return to the original shape when it is exposed to moisture fluxations and if no form of fixation occurs. The fixation can be done mechanically in a three-layer panel construction which reduce movements in the timber. These panels have been found to be unstable and previous attempts have shown deformations in form of cupping. This study aims to evaluate the conditions for using compressed aspen wood, and to provide a basis for development of a commercial product.

    Practical tests have been conducted to study hardness, springback and density of the compressed wood. In addition, three-layer panels have been developed to test whether it is possible to have a stable construction by varying the thickness of the buttom layer. Differences in acclimatisation time and the moisture contents effect on the springback has aslo been studied.

    The results show that the hardness of aspen wood after compression is in equal levels with beech and ashes, a low moisture contet provides a low springback, compressed timber have a longer time for acclimatisation and it is possible to fixate the material in the direction across the grain in a three-layer panel construction.

  • 377.
    Johansson, Martin
    Växjö University, Faculty of Mathematics/Science/Technology, School of Technology and Design.
    Konstruktion av ett passivt solenergihus2005Independent thesis Basic level (degree of Bachelor)Student thesis
    Abstract [en]

    In this project I have dimensioned a house with wall elements made of wood wool. The roof is made up of roof trusses with elements of wood wool 2400mm long lying between the roof trusses. The parts I have chosen to dimension is; roof trusses, floor girder, steel beam, concrete floor, ground sole and concrete ground. I have not done any control if the ground can carry they weight of the building. The house consists of a large amount of insulation to give a low cost for the warming of the house. The warming of the house are made out of solar energy, therefore the house have large sheet of glass in the south and west direction. When it got to warm inside is it supposed to transport the warmth down to the stone warehouse in the cellar. The warehouse I supposed to store warmth and in that order giving the house a more even climate. The stone warehouse is made out of a 1000mm thick layer of stone.

  • 378.
    Johansson, Martin
    et al.
    Växjö University, Faculty of Mathematics/Science/Technology, School of Technology and Design.
    Kanellos, Konstantin
    Växjö University, Faculty of Mathematics/Science/Technology, School of Technology and Design.
    Livscykelanalys och optimering av isoleringstjocklek för moderna byggnader: - med fokus på kv Limnologen i Växjö2007Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The aim with this report is to show how an increase of the thickness of insulating in a house influences the costs and the energy consumption for the insulation in a life cycle perspective and for the usage stage of the house. An optimization of the insulation on an ongoing construction project in Växjö, Limnologen has been carried out in the study. Total energy consumption for the insulation’s life cycle has been taken from earlier accomplished life cycle assessments (LCA). The house's heat need has been calculated on the basis of information from blueprints and contacts with persons in connection to Limnologen. An equation has been formulated in order to find a theoretical optimum for the insulating thickness regarding total energy consumption, carbondioxide and economy. The result of the optimization for total energy consumption shows that optimum lies at the the double thickness for ceilings and foundation, and triple for the walls. For carbondioxide and the economy the result is more depending on the house's heating source. District heating with biomass fuel is more environmentally friendly and economic today compared with fossil fuel. It means that houses that are oil heated should be insulated considerably more. In this study a compilation of some factors have been made, such as energy, carbondioxide and economy which makes it easier to compare them. Insulating to the calculated optimum is not relevant because the optimum is a theoretical value and does not take into consideration structure solutions and other problems that can arise. On the other hand the optimization curve shows that the profit increases rapidly at the first centimetres of additional insulation and if the structure is not affected markedly this addition would be profitable to carry out. The conclusion is that the buildings raised at Limnologen are well insulated with the presumptions of today.

  • 379.
    Johansson, Mats
    Växjö University, Faculty of Mathematics/Science/Technology, School of Technology and Design.
    Product Costing for Sawmill Business Management2007Doctoral thesis, comprehensive summary (Other academic)
    Abstract [en]

    Several Swedish sawmill groups have recently developed product-costing systems to possibly compensate for diminishing production knowledge in recently centralized market organizations. The concept of product costs is challenging in sawmilling, since production is of a joint type – each log typically yields many products. The newly developed costing systems rely on traditional accounting-based methods and are of little use in decision-making because the resulting cost figures do not normally estimate actual cost changes.

    This thesis develops an alternative, theoretically defendable method based on linear programming, and tests it on a pine sawmill. Computer simulations are compared with traditional methods, and to analyze the effects of managing the salesmen by the product costs of the suggested method. The thesis relies on the joint-cost accounting discourse from the 1980s, which was abandoned before any essential application was found. This application has now been found through changes in the sawmill industry, and the discourse is here revived practically and theoretically.

    The sawmills are modeled with relative capacity restrictions and with constraints on the flexibility of their timber supply. Sales decisions based on product costs from the suggested method seem to successively improve company profit. To be successful, the product costs have to be recalculated regularly. Analyses indicate that with flexibility in purchasing timber and a low cost difference between buying scarce products and selling surplus products externally, the necessary length of the recalculation period and the usefulness of the suggested method both increase markedly.

  • 380.
    Johansson, Mats
    et al.
    Växjö University, Faculty of Mathematics/Science/Technology, School of Technology and Design.
    Rosling, Kaj
    Växjö University, Faculty of Mathematics/Science/Technology, School of Technology and Design. Maskinteknik.
    Product Costing for Sales Management in Sawmill Groups2008Report (Other academic)
    Abstract [en]

    In large sawmill groups with centralized sales organizations, salesmen are detached from the mills, creating a demand for product cost information to calculate the profitability of products and customers. The cost of a board is a complicated concept due to the dominating joint timber cost of production, and costing systems in practical use typically rely on arbitrary cost allocation methods that generate cost figures of little value for decision-making.

    This paper develops a method based on linear programming (LP) that approximates the marginal costs of the boards – a meaningful concept for decision-making. By expressing all capacity restrictions in relation to the use of timber, the full cost of production is allocated to the products. Sacrificing the full cost feature, the method is adapted to absolute capacity restrictions.

  • 381.
    Johansson, Richard
    Växjö University, Faculty of Mathematics/Science/Technology, School of Technology and Design.
    Utveckling av svetsprocessen vid Volvo CE i Braås2007Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    This report, which is representing a diplomawork of the education program Machine Technology with industrial leadership alignment, is a first step in a developing process for the welding process at Volvo CE.

    The purpose of this diplomawork is giving Volvo CE comprehensive proposals at a development of the production process for welded components and to analyze these proposals. These proposals has been generated by the benchmarking which was carried out as well as the analyze of the present situation at Volvo CE, which together has been compared to all the collected theory from the subject area. From this a result has been worked out. The result shows three alternatives which is separated in their performance, but not in the basic assumptions. The common thing for these three alternatives is that all of them are taking care of the factors that seem to be important for the production in the future. These factors are fulfilled different in the three alternatives which are discussed in the discussion part.

  • 382.
    Johansson, Roger
    et al.
    Växjö University, Faculty of Mathematics/Science/Technology, School of Technology and Design.
    Svensson, Carl Johan
    Växjö University, Faculty of Mathematics/Science/Technology, School of Technology and Design.
    Gear house in nodular iron versus aluminium2005Independent thesis Basic level (degree of Bachelor)Student thesis
    Abstract [en]

    The degree project is performed for SwePart Transmission AB in Liatorp. SwePart develops and manufactures gearwheels and complete mechanical transmission systems to heavy duty vehicles and the manufacturing industry.The task is on the basis on an existing nodular iron gear-house make a CAD model of an aluminium gear-house with equivalent characteristics. The gear-house serves as a distributor in some of Volvos heavy duty vehicles to achieve all wheel drive. First, a simplified model of the distributor is used on the basis on an incoming torque at 6kNm and given gear data, calculation of radial and axial reaction forces is possible. Since the task is to compare the same gearbox with two different materials a first analysis of the gear-house is made. Now we can see the stresses and deformations the gearbox is exposed to were revealed. The goal is to find an aluminium gear-house that has the same stress and deformation level as the one in nodular iron. The properties of aluminium results in larger deformations but similar stress levels. The problem is that the yield stress for aluminium (90 MPa) is much lower than for nodular iron (320MPa). Since the stress level exceeds this value on several locations reinforcement on the gear-house is needed. Analysis shows that three points has a very high stress level. With some assistance we were able to identify these as singularities that may occur in FE-calculations. Reinforcement is still necessary and should involve increasing housing wall thickness by 6mm and enlarging the radius.

  • 383.
    Johansson, Sofia
    Växjö University, Faculty of Mathematics/Science/Technology, School of Technology and Design.
    Evaluation of alkali- impregnated honeycomb catalysts for NOx reduction in the SCR-process2006Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Samples of SCR catalysts were impregnated with the following alkali salts; KCl, K2SO4 and ZnCl2 at two different concentrations in a wet impregnation method. The activities of the six samples were measured in a test reactor and at different temperatures between 250-350 ºC. Compared to fresh catalyst, the impregnated samples all had lower activity. It seems like KCl is the most poisoning salt, depending on the lowest value of the activity. The experimental results are expected as compared to earlier articles, which reports that all alkali salts has deactivating effects on a catalyst and that KCl is among the most poisoning ones. By making a cross-section SEM analysis, the penetration of the metals at different depths in to the catalyst material wall was evaluated. An ICP-AES analysis was carried out in order to see the concentration of K and Zn of the test samples. Finally, the pore diameter and active surface was measured by BET method. Since the values of the active surface didn’t change compared to a fresh catalyst and the pore diameter was only slightly decreased we can suppose that the alkali salts deactivates the catalyst by coating of the catalyst pore structure and not as a pore blocking.

  • 384.
    Johansson, Ulrich
    Växjö University, Faculty of Mathematics/Science/Technology, School of Technology and Design.
    Orrouge2006Student thesis
    Abstract [en]

    This project has been design orientated and the focus was to study the possibilities of the glass in a industrial product development process. The goal has been to develop a lighting product with strong character that furthermore has possibilities to rational manufacturing. The inspiration comes from many different elements, like 1700 century Swedish glass, Moulin Rouge and contemporary shapes and expressions.

  • 385.
    Johansson, Ulrich
    Växjö University, Faculty of Mathematics/Science/Technology, School of Technology and Design.
    är allt svart eller finns det även en nyans av vitt?: från idé till industri.2005Independent thesis Basic level (degree of Bachelor)Student thesis
    Abstract [en]

    this report contains stidies of wich activities who is suitable to establish contact with the swedish furnitureindustry, and also in wich way a furniture develops from idea to prototype.

  • 386.
    Jonson, Bo
    Växjö University, Faculty of Mathematics/Science/Technology, School of Technology and Design.
    Devitrification and dilatometric properties of low Tg silicate glasses2007In: ICG 2007: XXI International Congress on Glass, ICG , 2007, p. 320-Conference paper (Refereed)
    Abstract [en]

    This study was made in order to investigate the possibilities to substitute lead oxide in glasses suitable to be used as enamels, i e low temperature softening glasses with the ability to be sealed to other glasses by fusing at temperatures of less than 520 - 540 C.

    The glass system chosen for the study can in general terms be described with the mole fractions: 0.25 R´2O – 0.15 R´´O/R´´´2O3 – 0.60SiO2. Among the investigated elements, data for R´= Li, Na, K; R´´= Ba, Sr, Zn, R´´´= B, Al, Bi will be reported.

    Glasses containing higher mole fractions of Li2O were found to devitrify when they were subject to a thermal treatment typical for the one used when fusing enamels. The devitrification characteristics expressed as crystallization temperature and liquidus temperature has been monitored by DSC and gradient furnace thermal analysis. The formed crystalline phases were identified by XRD.

    Thermal expansion () and Tg data were derived from dilatometry. Typical values found are thermal expansion ranging from 11 – 14 * 10-6 K-1 and glass transition temperatures between 410 – 460 C. Measured data could be fitted to the chemical formulation by multiple regression calculation methods in the general equation format: (, Tg) = K +  (cR * fR) in which K = constant, c = oxide mole fraction and f = oxide specific factor. The statistical analysis correlation coefficients (R2) were typically around 0,9.

  • 387.
    Jonson, Bo
    et al.
    Växjö University, Faculty of Mathematics/Science/Technology, School of Technology and Design.
    Lundstedt, Karin
    Stålhandske, Chrsitina
    A CIELAB approach facilitating glass decolourising and recycling of coloured cullet2009In: European Journal of Glass Science and Technology. Part A: Glass Technology, ISSN 1753-3546, Vol. 50, no 2, p. 89-94Article in journal (Refereed)
    Abstract [en]

    The CIELAB coordinate has demonstrated as useful for description of the colour characteristics of decolourised flint glass. The amounts of cobalt and erbium oxides necessary for sufficient decolourising of additions of coloured cullet can be calculated from the appearant linear dependence of CIE a* and b* coordinates to the added amounts of cobalt and erbium oxides to the batch. For the sucess of such a calculation, the colour point of the added cullet must be determined.

  • 388.
    Jonson, Bo
    et al.
    Växjö University, Faculty of Mathematics/Science/Technology, School of Technology and Design. Kemi.
    Zethraeus, Björn
    Växjö University, Faculty of Mathematics/Science/Technology, School of Technology and Design. bioenergi.
    Beerkens, Ruud
    TNO, Eindhoven.
    Lankhorst, Adriaan
    TNO, Eindhoven.
    CO2 neutral glass manufacturing?: a study of the possibilities2008In: Advanced Materials Research, ISSN 1022-6680, E-ISSN 1662-8985, Vol. 39-40, p. 425-430Article in journal (Refereed)
    Abstract [en]

    The technological needs to achieve CO2 neutrality during glass manufacturing have been investigated by theoretical calculations on energy balances and experimental investigations on batch reactivity and fining efficiency. The concept is based on the assumption of utilization of woody bio fuel combustion directly over the batch blanket and glass melt bath for heating the glass furnace. Energy balance calculations were made for a “hot top”, 50 tonnes per day continuous furnace. Furthermore, elimination of the chemically bound CO2 in the glass batch has been considered by investigating the possible substitution of the batch carbonates by other compounds not bearing chemically bound CO2. Compounds not emitting oxides of carbon, nitrogen or sulphur were considered as candidate batch components. Studies on the effect of batch melting and fining indicate a beneficial effect on energy efficiency and melting rate when using carbonate substitutes. It is concluded that the combustion concept is theoretically fully possible for glass tank application. The substitution of batch carbonates by non carbon compounds is questionable from an environmental point view since the alternatives are expected to be synthesized by routes emitting CO2.

  • 389.
    Jonsson, Mattias
    Växjö University, Faculty of Mathematics/Science/Technology, School of Technology and Design.
    Moss-sedumtakets bullerdämpande egenskaper: The noise reduction capability of greenroofs2009Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Syftet med arbetet är att få en förståelse för moss-sedumtakets bullerdämpande egenskaper. Jag kommer även att försöka förutsäga med hjälp av akustikteori vilken utav de två olika uppbyggnadssystemen av moss-sedumtak som ger den bästa bullerdämpande effekten.

    Mätningarna kommer att bestå i att registrera ljudtrycksnivån i rummet, vid varje oktavband i frekvensområdet 125-4000 Hz. Först utan moss-sedummattan och sedan med moss-sedum mattan. Storleken på differensen i ljudnivån ger en bild av i vilket frekvensområde som ljudabsorptionen är effektivast. För att ytterliggare öka förståelsen för hur moss-sedum absorberar ljud så kommer även absorptionsfaktorn att beräknas. Utifrån resultaten kan man se en tydlig bild på hur xeroflor moss-sedum mattan absorberar i frekvenserna 125-4000 Hz. Den har sin bästa absorption i området 500-4000 Hz och i detta område så är det runt 1000 Hz som den absorberar effektivast.

     

    Om vi tittar på de två olika systemen som Veg Tech använder för att bygga upp ett sedumtak på så sker dämpningen i XMS 0-4 med hjälp av luftspalten och i system XMS 2-27 i VT-filten. Men i detta fall så är luftspalten endast 25 mm så en märkbar ökad dämpning är svårt att föreställa sig. VT-filten som används i XMS 2-27 har öppna celler och kan liknas vid mineralull, som är en bra absorbent. Min slutsats är att 10 mm VT-filt ger bättre dämpning än en luftspalt på 25 mm.

     

  • 390.
    Jonsson, Ragnar
    Växjö University, Faculty of Mathematics/Science/Technology, School of Technology and Design. Skog & trä.
    A Method to Assess and Prioritize Customer Needs Among Substitute Materials2006In: Journal of Forest Products Business Research, Vol. 3Article in journal (Refereed)
  • 391.
    Jonsson, Ragnar
    Växjö University, Faculty of Mathematics/Science/Technology, School of Technology and Design. Skog & trä.
    Increasing the competitiveness of wood in material substitution: A method for assessing and prioritizing customer needs2006In: Journal of Wood Science, ISSN 1435-0211, E-ISSN 1611-4663, Vol. 52, no 2Article in journal (Refereed)
    Abstract [en]

    To increase the competitiveness of wood as a building material requires knowledge of which customer needs require attention in terms of quality improvement and/or product development to best satisfy customers. Hence, information as to the impact on customer satisfaction of the fulfillment of different customer needs, as well as the performance of wood and substitutes in providing for these needs, is needed. This article suggests the use of customer satisfaction modeling (CSM) for assessing customer needs. The methodology is evaluated in the context of floorcovering. The results suggest that CSM is well suited for extracting the information necessary for prioritizing customer needs: importance/impact and performance data for attributes as well as for customer benefits. The study indicates the necessity of considering substitute materials not only for performance comparisons; substitutes may also reveal otherwise latent customer needs. Practical, functional, benefits exert the greatest impact on customer satisfaction for wooden flooring as well as its closest substitutes, laminate and carpet. Hygiene and a low cost over the life cycle are apparently the customer benefits that require attention from wooden flooring manufacturers, because importance is high and performance relatively low.

  • 392.
    Jonsson, Ragnar
    Växjö University, Faculty of Mathematics/Science/Technology, School of Technology and Design.
    Studies on the competitiveness of wood: - market segmentation and customer need assessments2005Doctoral thesis, comprehensive summary (Other academic)
    Abstract [en]

    Over the last decades, wood has encountered increasing competition from other building materials. Hence, it is relevant to study the underlying factors of material substitution. The market for repair and remodelling (R&R) is growing in importance. The end-consumer´s, or the household?s, assessments as to material selection are generally more crucial in R&R than in construction of new houses, a circumstance highlighting the importance of the end-consumer. Consequently, this thesis deals with material substitution within an end-consumer context. Proper market segmentation and targeting presuppose an understanding of why households differ as to material preferences. Prioritising customer needs in quality improvement and/or product development requires information as to the importance of different customer requirements or needs as well as the performance of wood, relative substitutes, in providing for these needs. The thesis proposes a coherent approach for market segmentation and for prioritising customer needs: (i) how to provide a basis for market segmentation and targeting, i.e., to extract the distinguishing features of different material preferences; (ii) how to extract information enabling the prioritising of customer needs, i.e., importance and performance information.

    Identifying prominent discriminating factors of building application material preference, in order to subsequently explain why households differ within and between samples/cultures as to material preferences, and finally assessing customer requirements or needs as to the importance and the performance of wood relative substitutes in fulfilling them, presuppose an approach for data collection and analysis, which in turn requires a theoretical frame of reference. Hence, in the thesis a theoretical framework and different methods, for extracting decisive preferential predictors and assessing customer needs respectively, are suggested and evaluated. A pronounced design profile and distinct material alternatives make floorcovering a good illustrative example.

    The results indicate that material substitution with an end-consumer focus should be studied within a contextual framework. Hence, the usage context, the type of room refloored and whether the dwelling is owned or not, seems to define the types of materials actively considered. Further, households obviously differ in how they perceive the concept of floorcovering in a given usage context, depending on the general life situation and individual experience. Data collection, with the aim of identifying distinguishing factors of building application material preferences, must thus handle the collection of data related to usage context as well as the general life situation and individual experience. To obtain a deeper understanding of the underlying motives open-ended questions are called for. Performance benchmarking as to customer requirements or needs should be relative competitors in the same market segment, i.e., close substitutes. The assessment of customer needs should allow analysis on benefit levels, as alternatives in material substitution most readily can be compared in terms of the more abstract benefits/consequences they provide rather than concrete attributes.

    The apparent causal complexity, resulting from contextual influences, severely limits the usefulness and adequacy of traditional, additive, statistical analysis. Multivariate projection methods like partial least square discriminant analysis (PLS-DA); in coping with collinear variables, as well as the Boolean approach of qualitative comparative analysis (QCA); enabling data reduction in a theoretically guided manner, have potential for handling multiple conjunctural causation when analysing material preferences. Furthermore, both methods are able to handle binary variables resulting from open-ended questions, dependent as well as independent. PLS-DA can, however, more readily than Boolean algebra capture contextual influences. Analysis by means of PLS-DA thus seem to provide the information necessary for market segmentation and targeting, i.e., the causes of preferential differences both between and within cultures: evaluative criteria and variables related to the context. The output from the analysis of material preferences serve as input to the subsequent assessment of customer needs, as to the make-up of customer needs and as to which materials constitute close substitutes, i.e., share usage context. Customer satisfaction modelling (CSM) using partial least squares (PLS) seems well adapted for extracting the information necessary for prioritising customer needs: the impact on customer satisfaction of the fulfilment of different customer requirements or needs, and the performance of wood, relative substitutes, in providing for these needs. A valuable asset of CSM is the ability to allow analysis on customer benefit as well as attribute level.

    Usage context and data connected with the life situation provide instruments for market segmentation and targeting. For example: according to the present results, users of wooden flooring in the Netherlands are house owners to a greater extent and generally have a higher household income than users of laminated flooring. One of the apparently salient reasons for choosing wood, the natural material property, is part of the intrinsic nature, character, of the material. This quality of wood could provide an edge on the close substitute, laminated flooring. The results presented in the thesis further indicate that practical, functional, benefits exert the greatest impact on customer satisfaction, for wooden flooring as well as its closest substitutes laminate and carpet. This is noteworthy, as the salient evaluative criteria for choosing wooden flooring, unlike the other materials studied, were of a non-practical nature. This circumstance highlights the necessity of considering substitutes to identify latent needs. A low cost over the life cycle and hygiene are apparently the most important benefits to improve for wooden flooring manufacturers, as importance is high and performance relatively low.

  • 393.
    Josefsson, Jonas
    Växjö University, Faculty of Mathematics/Science/Technology, School of Technology and Design.
    Design av hyllkoncept2008Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The layout in a store affects the behaviour when people are shopping. Stores want many customers which frequently visit the store and purchases a lot and often. Customers stay longer and usually come back if the store has an attractive decoration and layout.

    This diploma work is made on behalf of Johansson & Jonsson Konstruktion AB. The aim of the project was to create a more exclusive shelf concept for stores that mainly sells clothes. The scope is for Johansson & Jonsson Konstruktion AB to be able to produce this shelf concept with their current machines and without any major investments in new machines. A standard concept has been created with possibilities to amend and adapt it to a more personal style should it be requested. With a different style of the shelf concept the store can get just the character and approach it want.

    The project is divided into various chapters starting with a survey among the staff at stores to get a good overview about their opinions of the layout and decoration. Thereafter, current available solutions and materials have been evaluated and followed by various drawings as well as the final result at the end.

  • 394.
    Järhult, Jonas
    et al.
    Växjö University, Faculty of Mathematics/Science/Technology, School of Technology and Design.
    Persson, Henrik
    Växjö University, Faculty of Mathematics/Science/Technology, School of Technology and Design.
    Optimering aven centrifugalkoppling2004Independent thesis Basic level (degree of Bachelor)Student thesis
    Abstract [en]

    The mechanical engineering program at Växjö University involves a compulsory element to accomplish a ten-point diploma work. This work is performed at FOLAN AB in Flyinge. FOLAN AB manufactures among other things industrial engines of motorcycle type which uses as source of energy in a fire-pump. The fire-pump must stand for pumping tremendous volumes of water and the whole construction must be small and light to be able to be carried by hand when the pump is operating in remote areas.

  • 395.
    Jönsson, Johanna
    Växjö University, Faculty of Mathematics/Science/Technology, School of Technology and Design.
    Ergonomi: vikten av rätt sittande2007Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The science of ergonomic means the human in work, which also can be defined as the combination between the human and the working tools. With this as a background it proves that there are high demands on the chairs that are meant for work. The chair is supposed to complement the user to reach an optimal ergonomic sitting.

    The purpose of this report is to give an insight in the ergonomic sitting and how workchairs are designed. Ergonomics means that one way to reach an ergonomic sitting is with an open hip angle, which brings out a dynamic sitting. The dynamic sitting gives the user an active sitting. This can partly be achieved through a sitting like the principle for the balance chair. To further achieve a good sitting there are laws that contents the work environment, which controls the sitting on workplaces.

  • 396.
    Kaleva, Marina
    Växjö University, Faculty of Mathematics/Science/Technology, School of Technology and Design.
    Carpe, från bricka till serveringsvinge2008Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Projektet avser att med uppdrag från kostchef Kristina Sjöholm på restaurang Kosthållet och med Design med omtanke som projektform och stöd, utforma en serveringsbricka med tonvikt på form och akustik. Brickan ska anpassas för rummet och brukaren på ett nytänkande sätt och vara anpassad för det som ska transporteras på den.

    Mycket av utmaningen ligger i att få brickan anpassad till en restaurang trots att den i mångas ögon inte anses höra hemma där.

    DMO förändrar miljöer och produkter där människor möts och de gör det med omtanke om människor och natur. Genom en tydlig breif och ett gott samarbete med den tillsatta gruppen, har resultatet nått sitt mål. Brickan har fått gå igenom en omfattande produktutvecklingsprocess och genom den fått både nya funktioner och

    egenskaper. Eftersom vissa av de generella element som utmärker en bricka tagits bort har den fått ett nytt uttryck. Detta var viktigt eftersom ett av kraven var att gå ifrån matsalskänslan och då få brickan att smälta in i restaurangkontexten. I slutresultatet finns lösningar på samtliga områden.

    Det som var svårast att lösa var att ge brickan en ljudabsorberande förmåga men redan nu har goda resultat visat sig och metoden ska nu testas ytterligare för att se om eventuell patentsökning kan vara aktuellt.

  • 397.
    Kans, Mirka
    Växjö University, Faculty of Mathematics/Science/Technology, School of Technology and Design. Systemekonomi.
    A HOLISTIC PERSPECTIVE OF COMPUTERISED MAINTENANCE MANAGEMENT SUPPORT2006In: Proceedings of Condition Monitoring and Diagnostic Engineering Management: COMADEM 2006 - Luleå, Sweden, Luleå University of Technology Press, Luleå , 2006, p. 892-Conference paper (Refereed)
    Abstract [en]

    During the past four decades great progress within information handling and storage has been accomplished. The importance of enterprise information technology (IT) systems has increased in order to meet the demands set by the users. This is the case also for maintenance management IT, i.e. applications used for maintenance management purposes, such as computerised maintenance management systems or maintenance/asset management modules in enterprise resource planning systems. This paper discusses how the needs of maintenance management IT can be identified. It also studies the functionality of commercial maintenance management IT systems. Main result is a holistic model of maintenance management IT functionality and characteristics needs.

  • 398.
    Kans, Mirka
    Växjö University, Faculty of Mathematics/Science/Technology, School of Technology and Design. Maskinteknik.
    A literature review of computerised maintenance management support2007In: Proceedings of MIMAR 2007 - 6th IMA International Conference on Modelling in Industrial Maintenance and Reliability, Salford University, 2007, Salford , 2007, p. 96-101Conference paper (Refereed)
    Abstract [en]

    Maintenance management information technology (MMIT) systems have existed some forty years. This paper investigates the advancement of these systems and compares the development of MMIT with other corporate information technology (IT) systems by the means of a literature study of 97 scientific papers within the topic of MMIT and additional readings in books. The study reveals that the focus of MMIT has changed in several aspects during the forty years that has been investigated; from technology to use; from maintenance function to maintenance as an integrated part of the business; from supporting reactive maintenance to proactive maintenance and from operative to strategic maintenance considerations.

  • 399.
    Kans, Mirka
    Växjö University, Faculty of Mathematics/Science/Technology, School of Technology and Design. systemekonomi.
    Accessing relevant data within maintenance - problems and possibilities in the realisation of a common database2008In: Proceedings of the 18th International Conference on Flexible Automation and Intelligent Manufacturing, Skövde, Sweden, June 30 – July 2 2008, Runit AB, Skövde , 2008, p. 340-347Conference paper (Refereed)
    Abstract [en]

    Data is needed to support all kind of maintenance management activities e.g. in form of registers, procedures and schedules. Moreover, for predictive-proactive maintenance strategies, such as Total Quality Maintenance (TQMain), the ability to monitor performance is a prerequisite for cost-effective management of maintenance. To achieve this, the common database concept was promoted for the definition and collection of a relevant data-set for maintenance management. When defining and collecting a relevant set of data, one will face several challenges, whereas this paper covers following: 1) Connection to full decision-making process, 2) Data filtration, 3) Data heterogeneity, 4) Standardised data and 5) Flexibility. Today, several standards are available which are supporting data definition and information integration within maintenance management. This paper explores the possibilities to use five of these in order to realise the common database concept: EN 13460, EN15341, OSA-EAI, OSA-CBM and IEC62264. The main conclusion is that no standard could fully support the realisation of the common database concept, and due to this, this paper suggests combining two or more standards for achieving the goals. The results in this paper could be used for the selection of appropriate standard to utilise, depending on the challenge to overcome.

  • 400.
    Kans, Mirka
    Växjö University, Faculty of Mathematics/Science/Technology, School of Technology and Design. maskinteknik.
    ACHIEVING PROFITABLE MAINTENANCE BY THE UTILISATION OF DATA AND INFORMATION TECHNOLOGY2007In: Proceedings of the 20th International Congress on Condition Monitoring and Diagnostic Engineering Management: Machinery and process health monitoring - future trends and prospects, 2007, p. 105-114Conference paper (Refereed)
    Abstract [en]

    Research shows that information technology (IT) investments in the maintenance area are of equal strategic importance as IT investments in general. Provided that correct and relevant IT is applied, information technology could be an important tool for reaching the goal of profitability in maintenance. This paper discusses the relationships between maintenance business demands and maintenance demands of data and information technology systems and gives suggestions for how relevant data and information technology systems could be identified in order to achieve profitable maintenance. This paper concludes that the demands of data and IT applications must be connected to the overall maintenance demands, which are reflected in the maintenance goals and strategy, in order to achieve profitable maintenance. Furthermore, structured methods that ensure the connection between maintenance business goals and data/IT demands are of importance.

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