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6401 Uppsatser om Design parameter - Sida 2 av 427
Dimensionering av betongplatta på lös undergrund. En jämförelse mellan tre beräkningsprogram
Today more effective computer programs are in use, regarding design of geotechnicalconstructions. There is a risk that the theoretical background of the computerprograms, its limitations and the signification of the choice of soil parameter isforgotten when the computer programs become more user-friendly.This Master thesis deals with simulation and analysis regarding three computerprograms, FEM-design, with the addition Raft, Plaxis and BE-slab. Comparisons aremade for settlement and maximum moment in a concrete-plate. FEM-design is a threedimensional FEM-program, foremost created for design engineers. Plaxis is a twodimensional FEM-program, intended for geotechnical engineers while BE-Slab is aBoundary elements program in two dimensions that is mainly used by designengineers.
Modellering och design av elmotor för mutterdragare
This thesis was carried out at Atlas Copco Tools and Assembly Systems. The purpose hasbeen to develop a design tool to be used for development of new electric motors for AtlasCopcos electric nutrunners. The focus of the thesis has been to increase productivity bydecreasing the power losses in an electric tool. The productivity is defined as themaximum number of tightenings a nutrunner can perform without becoming too hot.Before starting the development of this design tool an existing Matlab script, whichcalculates the losses in a slotless electric motor, has been studied and modified torepresent the real losses in a better way. The modification has been made by performingpractical studies of different losses and then adjusting existing parameters in the Matlabscript.Because design changes in one part of a mechatronic system can lead to a decrease inperformance of another part the choice of parameters that can be changed has been madeso that other parts of the system is affected as little as possible.A study of the existing tools efficiency during an entire tightening has been made toincrease the understanding of when and where the different losses appear and to comparethe modified Matlab script with the measured values.The design tool was formed so that it executes the Matlab script, that calculates thelosses, for a number of different design options and stores the alternative which producesthe least losses.
Parameters having significant impact on FRS matching
Facial Recognition Systems är något som har blivit populärt de senaste åren, speciellt efter den 11 september 2001. Möjligheten att kunna över-vaka personer som rör sig i olika miljöer har varit av intresse för bland annat regeringar, till exempel USA:s regering. Eftersom det finns mängder med olika typer av undersökningar och alla försöker göra så bra matchningar som möjligt av personer mot databaser, fast de utförs på olika sätt, är det intressant att se om det finns någon parameter som har en större påverkan på resultaten, oavsett om undersökningen görs med 2D, 3D eller en kombination av metoderna. Det finns många olika faktorer och parametrar som påverkar matchningsprocenten därför skall denna littera-turstudie försöka lokalisera och se om det finns någon parameter som har en större påverkan på matchningsprocenten. Det visar sig att två parametrar har en större påverkan än övriga parametrar.
Automatisk trimning av externa axlar
This master theses deals with different methods for automatic tuning of the existing controller for external axis. Three methods for automatic tuning have been investigated. Two of these are based on the manuell method used today. The third method is based on optimal placement of the dominant poles. Different sensitivity functions are important for this method.
Hantering av digitalt designmaterial i kollaborativ miljö
A case study of professional interaction designers' usage of design materials was conducted. Five interviews were performed in order to gain insight in the systems used by designers, how these work, how they collaborate within them, and what they think of recent research about them. Design studios allow collaboration for several users at once. Digital material (mockups, pictures, etc.) are commonly used, but needs to be made analog, e.g. printed, to be usable in the design studio environment.
Design management i produktutvecklingsföretag : Samarbetet mellan en design manager och en designkonsult
Design management är ett arbetssätt som har börjat tillämpas av allt fler företag de senaste åren, men det kan fortfarande vara svårt att förstå betydelsen av design management. I uppsatsen undersöks det vilken betydelse en design managers kompetens och position har för samarbetet mellan det designköpande företaget och en designkonsult under ett designinköp. Genom ett flertal intervjuer, utifrån både design managers och designkonsulters perspektiv, undersöks det hur samarbetet fungerar mellan dessa parter. En analys av intervjumaterial med hjälp av en teoretisk referensram bestående av design management-teori, design som en integrerad process och beslutsrollsteori har lett fram till ett antal slutsatser om design management. Några av slutsatserna är att design management, enligt teorierna, som arbetssätt inte är så vanligt och att det finns en viss samarbetsbrist enligt de intervjuade designkonsulterna, som i viss mån underlättas om design managern har kunskap om vad design innebär..
Gradering av vindkraftslägen i Lerums kommun med hänsyn till infrastruktur och läge
The aim of this master thesis was to find and grade suitable sites for wind turbines in the rural district of Lerum at the reguest of Göteborg Energi. The rural district of Lerum consists of very complicated terrain which was the reason why we picked Lerum.The assignment was achieved by using the software program ArcGIS and its attendant tools. In step 1 an overall analysis was made in order to sort out the least suitable sites. Step 2 consisted of a 3D analysis in ArcScene together with a more precise analysis in ArcMap. As result we found two interesting sites, which met our demands and specific constraints.
Designprincipers applicerbarhet på domänen streamad-TV
In our study, we investigated how the streamed TV domain relates to existing design principles for web design. Further, we have investigated whether there are specific characteristics of the domain that the design principles do not cover. In the survey we have studied two sites which are representative of the streamed TV domain. Finally, we discuss how applicable the design principles are for the domain and the specific characteristics that would require new or further developed design principles..
Nyckelfaktorer för en designs slutskede
The final stage of a designers work is always a bit tricky. Design is an abstract phenomenon and no one can tell when a design is really finished. The design process that designers work within has been thoroughly studied but cannot be truly mapped with strict constraints which the designer can follow to succeed. Therefore, in this paper we take a look at the final stage in the design process. The main goal is to get more knowledge and highlight key factors about what designers face when they are about finish their design or what forces them to leave a project that can stay in development for eternity.
Camp Vamp - Att ljussätta en dansföreställning med skiftande förutsättningar
I work on a lighting design for a dance performance to be on tour. A lighting design adapted for
three different conditions was made:
- One comprehensive where I allow myself a great deal of creative freedom, adapted for the
stages with major technical conditions.
- One smaller version for stages with less equipment and with less time for preparation on
site.
- One design for very simple conditions.
I also examine the specific differences between typical theatrical lighting design and typical dance
lighting design, and the best way to prepare for the hands-on stage design phase..
Design och optimering av lagertätning : Hos hydrodynamiska oljeglidlager med labyrinttätning
ABB Motors and Generators manufacture large AC machines with oil lubricated plainbearings. The machines have occasional problems with oil leakage from the bearings. aproblem that ABB wants to be solved.In this thesis the cause of this leakage were investigated, with focus on the bearingseals.The purpose of this work was also to suggest amndments for preventing thisproblem. , and to suggest improvements that can prevent this. The first step was todo a literature survey of earlier work on this problem, study the theory ofhydrodynamic bearings and different types of seals and their properties.
Synchronous Latency Insensitive Design in FPGA
A design methodology to mitigate timing problems due to long wire delays is proposed. The timing problems are taking care of at architecture level instead of layout level in this design method so that no change is needed when the whole design goes to backend design. Hence design iterations are avoided by using this design methodology. The proposed design method is based on STARI architecture, and a novel initialization mechanism is proposed in this paper. Low frequency global clock is used to synchronize the communication and PLLs are used to provide high frequency working clocks.
Activate Nyhamnen : a design proposal after Kongjian Yu's design approch
This thesis introduces Kongjian Yu?s design approach in terms of industrial heritage conservation in connection to transformation and urban design. The approach is examined respectively on two cases from China and USA. The thesis give a brief introduction to current achievement in conservation research and general profile of industrial conservation practice. Based on case and theory study, Yu?s design approach is carefully applied to an industrial area Nyhamnen in Malmö and a design proposal is produced.
Design av Tjänster : Komplex affärsutveckling över tid och rum
Service Design is a relatively new, unexplored and exciting phenomenon that through an interdisciplinary work methodology designs services. A discussion has been going on for a long time regarding whether there is a difference between products and services. Services are often classified as immaterial, heterogeneous, non-storable and inseparable in relation to products. A question that arises is if something specific characterises the work methodology used regarding service design. The aim with this paper is thus to explain the work methodology when working with service design.
Funktionsentreprenad för beläggning och vägmarkering
This report is written in cooperation with the Swedish National Road Administration South-Eastern Region in Jönköping. The report is a result of the evaluation to give an answer to the question about how well the function contract has been carried out on the E4 in Östergötlands and Jönköpings län. The evaluation is divided in two hard parameters and one soft.The Swedish National Road Administration is interested in knowing how the standard on the road have been changed during the functions period, which is the reason why the first hard parameter is considering road standard. To evaluate the standard there have been a comparison of values from measures taken every year on the current road stretch. The second hard parameter considers economy.