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74 Uppsatser om Rigid lenses - Sida 4 av 5
Aerodynamisk optimering av vindkraftverks rotorblad med en genetisk algoritm, BEM-teori, och XFOIL
This study presents a methodology that enables the annual average power of a wind turbine to be increased by automatically optimizing it?s airfoil, twist and chord dis- tribution. As a part of the study the software SiteOpt has been developed. This software connects the open source software XFOIL with the blade element momen- tum theory. XFOIL gives lift and drag coefficients which enable the blade element momentum theory to predict the power of a wind turbine at different wind and ro- tational speeds.
Små mängder primärprodukter : vad innebär det?
In article 1.2 c) EC regulation 852/2004 it says that the regulation is not applicable to producers who directly supply small quantities of primary products to the final consumer or to the local retailers who in their turn directly supply the final consumer. An almost identical regulation can be found in article 1.3 c) EC regulation 853/2004. The supply by a primary producer of small quantities of primary products, of animal origin or not, are consequently excepted from these two hygiene regulations. In article 1.3 EC regulation 852/2004 and article 1.4 EC regulation 853/2004 it says that the member states are to establish national rules in their national legislation as to the regulation of exception for small quantities. The aim of this study was to investigate the handling of small quantities of primary products distributed locally in Sweden but also the handling of these products in other countries.
Att arbeta med Scrum : Påverkan på arbetslag, kommunikation och social miljö
Systems development methods has always been an important part of the systems development process. It affects not only the product, but also the organization itself. Today more and more companies are abandoning the more rigid traditional methods for the more flexible agile ones. A transition like this is bound to affect the product and the organization, but in what ways? Is it a difficult transition to make, and how does it affect social environment and dynamics? Does it change how people communicate information to each other? This study was conducted at a local branch of a larger international IT-company.
Samtalets helgd. En rekonstruktion av den svenska elitens demokratisyn
Democracy is said to uphold the dearest values and be the most moral system. But it cannot be characterized as a rigid "syste" but a continuously changing political framework, under which aims and values can be fulfilled - and replaced.The increasingly diverse and ever-changing environment of contemporary democracies forces change upon the systems' natural evolution, which makes their future features uncertain and unforeseeable. A powerful change-force doctrine does however claim change is mainly (or merely) caused by the power of ideas; the elite power over ideas can thus provide a natural foundation for the analysis of the direction of development for democracy. This study aims to provide such a foundation by reconstructing empirical and normative descriptions of democracy at two certain points in time, following extensive government studies.As a tool for analysis, this study identifies values of substantial and procedural character central to democracy theory and discourse. It further creates ideal types of democracy based on these values, to which the nature of democracy is measured.
Förslag till nytt utförande av fasta ställbara fläkthjul
Examensarbetet går ut på att frambringa några principkonstruktioner till axialfläktar med fasta inställbara skovlar åtFläktWoods. Fläktarna det rör sig om är stora industrifläktar med en diameter mellan en och fem meter, som används för atttill exempel transportera ner luft i gruvor. Endast förslag till principkonstruktioner tas fram och ej en färdig produkt, syftetmed rapporten är i första hand att ge FläktWoods konstruktörer ett annat synsätt på problemet. Två olika delar av fläktenundersöks, dels fästet av skoveln på hjulet, dels själva hjulet i sig. Tillvägagångssättet är att från formulerat problem tasförst några förslag fram, de utvärderas sedan och de bästa går vidare till nästa steg.
Analys och utveckling av boggi till ramstyrd dumper
Volvo Construction Equipment is one of the worlds largest manufacturer of heavymachinery. In Braås, Sweden, they develop and manufacture articulated haulers inseveral sizes. The biggest, the A40, is capable of loading almost 40 metric tonnes.These haulers have a bogie to distribute the forces of the load evenly onto the two axlesand there wheels. The bogie is constructed using a rigid balance beam on each side ofthe frame connecting the axles or an independent solution using hydropneumatics.An analysis has been made in order to establish the forces created during corneringand through the theory, an estimation of the extensive tyre wear and extra fuelconsumption has been made. All due to the effects of the tyres not being inline with thecornering radius.
Konstruktion av beslag med dörrfunktion till spridarlucka
This thesis was performed at Zetterbergs Industri AB. Zetterbergs is designing, building and mounts body systems for trucks, including dumpers and tippers. The assignment for the thesis was to design a door hinge for a spreader gate. The spreader gate is the top of the two tailgates on a dumper or tipper and opens back and outwards when tipping the cargo. The spreader gate controls the mass flow of the material being tipped.
Utvärdering av metoder och modeller för att simulera växlingskomfort i entreprenadfordon
Good comfort for the driver of a construction machine is crucial. Gearshift comfort is an important part of the total comfort. Volvo Construction Equipment Components has a simulation environment of the powertrain, SimPow, which is implemented in Matlab/Simulink. SimPow is mostly used for simulation of control strategies and performance. In order to be able to study gearshifting comfort, Volvo has an interest in developing new models for SimPow.
Shuttling Between Cultures: Expatriation in the Context of Sweden
Being a successful global business player depends on firm?s ability to mobilize its resources worldwide. For this reason getting the right people with the right skills, at the right time, at the right place is crucial and makes expatriation one of the most important issues of today?s business world agenda. In terms of expatriation; national culture provides the context for the whole process.
Energiförbrukning för putsade, odränerade träregelväggar i fuktigt respektive torrt tillstånd
In recent years, moisture damages have been noticed in rendered, undrained stud walls. The design is built on the principle one-stage tightening which means that there is no air gap in the construction. The damages have occurred when water has permeated through the rendering in leaking connections and fittings for windows, doors, canopies, balconies, terraces and awnings. Behind the plaster carrier, which consists of either polystyrene or rigid mineral wool, plasterboard has often been used as a wind protection barrier. In many cases the wind protection barrier and the underlying wooden studs have been exposed to mould and in some cases even rot.
Pilotmodeller till flygmekanisk simulator för JAS 39 Gripen
AbstractSAAB has for a long time used user controlled pilot models in ARES. ARES is a simulation tool used in the desktop environment for simulations and calculations of the JAS 39 Gripen fighter and other aircraft. ARES stands for ?Aircraft Rigid body Engineering Simulation?. To work with these pilot models has been both time-consuming and inefficient.
New Business Model for District Heating Firms Stabilizing the National Energy System with a Future Variable Electricity Production
The aim of this thesis is to develop a new business model for district heating and cooling firms which can contribute to a stabilization of the Swedish national energy system. The business model is developed for a district heating and cooling firm and is exemplified with Fortum Heat. The theoretical investigation around the topic creates a rigid base for following qualitative empirical studies. Osterwalder?s canvas for business model generation is used together with a Casual Loop Diagram to identify a number of business opportunities which stabilizes the national energy system.
FÖRBÄTTRAD MONTERING OCH DESIGNAV BAGAGELUCKA
This thesis includes a mechanical engineering design work performed incollaboration between ÅF and Halmstad University. The work is done by FredyOlsson?s methods of Principle- and Primary Construction and David Ullman?stheories of Design for Assembly.The group was commissioned by ÅF to produce a concept to narrow down theassembly time of today?s luggage doors by reducing the numbers of adjustmentoptions. They also wanted it to be easier to mount the assembly by making itpossible to adjust the door in a closed position. Today luggage door takes, with its10 adjustment possibilities, around 4 hours each to assemble and ÅF wanted anassembly time around 10 minutes per door.Initially a preliminary study was made where the group began reviewing today'sconstruction and mounting of rails and doors on buses.
Socio-ekologisk resiliens i svensk strategisk planering
Klimatförändringar och andra miljöproblem kan i framtiden komma att innebära stora påfrestningar på städer. Socio-ekologisk resiliens är ett sätt att förstå motståndskraft och förändring hos sociala och ekologiska system. För att göra städer mer motståndskraftiga för yttre och inre störningar har ett socio-ekologiskt resiliensförhållningssätt till planering ansetts givande. Konceptet socio-ekologisk resiliens kan också betraktas som en brygga mellan social hållbarhet och ekologisk hållbarhet.Denna uppsats undersöker ifall det finns uttryck för socio-ekologisk resiliens i svenska kommuners strategiska planering och om det finns strategier i kommunerna för att binda ihop social hållbarhet med ekologisk hållbarhet. Genom studier av teoretisk litteratur kring socio-ekologisk resiliens har fyra utgångspunkter för en planering för socio-ekologisk resiliens tagits fram och med hjälp av dessa fyra utgångspunkter analyseras nio kommunala översiktsplaner.Planerna har valts ut för att spegla ett genomsnitt av svenska kommuner.
Organisering av arméns insatsorganisation : Är det operativa och taktiska skäl till att förbanden ser ut som de gör?
Uppsatsens syfte är att analysera och diskutera vad som legat till grund för organisering av arméns insatsförband insatsorganisations år 2009 (IO 09). Hur ser organisationsstrukturen ut och vilka faktorer har påverkat organiseringen av IO 09? Uppgiftens komplexitet innebar att jag närmade mig problemformuleringen från olika perspektiv. Studien omfattar därmed en mångsidig kvalitativ analys av data från både styrdokument och intervjuer.Studien visar att det framförallt är de klassiska ?byråkratiska teoretiska? perspektiven som dominerar organisationsdesignen inom arméns insatsorganisation 2009.