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2488 Uppsatser om Free surface flow - Sida 61 av 166
Implementering av lean i ett gjuteri med låga volymer och hög variation
Valmets own foundry in Karlstad has during a long period of time had problems being profitable. The goal today is to turn this around. Today there are three different productionlines; engine blocks, Yankeecylinders and components for the wind turbine industry. This master thesis has focused on examining if value stream mapping is a useful tool to use in a foundry, and therefore outside the typical manufacturing industry. The target has also been to evaluate if there is a possibility to improve the flow in the foundry and also the results.During the 20 weeks this work has been done at the foundry data has been collected and analyzed.
Kvinnojourerna och myndighetssverige. Kvinnojourernas ställning i det svenska samhället.
The violence against women is an important matter. In Sweden there are several organisations that takes care of the women and children in need.One of the many organizations you can turn to is women's shelter organizations. They are nonprofit organizations. They depend on the contribution of peoples free time and on the government's awareness of the work that the organization do. The social services has the main responsibility to take care of women and children in need.
Rostfritt stål som ett alternativt material till koppar i tappvattenledningar för bostäder
Today?s wind power plants are only compensated for their reactive power consumption at no-load. As the wind power plants grow bigger the amount of reactive power they need also increases. This is no longer a problem that can be ignored, especially as the net owners are beginning to charge the reactive power they transport.In this thesis a couple of different methods of compensation and their prices will be discussed and evaluated. Problems, such as self-excitation, that can occur if one fully compensates the wind power plant will also be brought to surface.
Pedagogisk lek i förskolan : En samtalsanalytisk studie av pedagogens roll i olika lekaktiviteter
Play is an important part of children´s everyday life, it is through play children develop. Play occurs a lot in kindergarten and in this study, the aim is to examine how play activities play is used in preschool teaching and the role of the teacher´s in the play. Video recordings of play activities done and qualitative methods (conversation analysis) has been used to analyze the video recordings. The results of this study show that play are widely used as a pedagogical tool in preschool. It is through play children develop.
Konstruktion av upprätningssystem för CICLoPE
Today there is no way of measuring or simulating turbulent flow in high Reynolds numberenvironments. The computational power required to simulate these conditions is not expectedto be available for several decades so instead the CICLoPE project aims at solving thisshortage by the construction of a long carbon fiber wind tunnel in which real measurementscan be made. To do accurate measurements it is of importance that the wind tunnel, 0.9 metersin diameter and 110 meters long, is as straight as possible.This master thesis treat the design and construction of a device which may be used to align thetunnel along a reference laser beam. A design is presented which allows the pipe to be alignedwithin about a quarter of a millimeter along its entire length. Contents span over severalscience fields such as physics, mechanics, control theory and electronics.The result is a theoretically correct design.
Brännkammare för träpulver : Teoretisk analys och praktisk försök
The thesis describes a completely new biofuel system to generate particle-free heat from combustion of ash-containing biofuel particles at high temperatures.The suggested system gives opportunities to introduce biofuels in new areas.Main components in the suggested system is a heat radiating combustion chamber intended for pulverized wood, combined with regenerators to extract heat from flue gases and simultaneously preheating the combustion air.The thesis contains a description of the suggested system, theoretical considerations, calculations regarding the combustion, and includes results from tests performed.The results from calculations and tests performed concludes that the system is workable and possible to apply..
Formulering och provning av en ny typ av sågkedjeolja
Formulation and testing of a new type of chainsaw lubricantThe company Agro Oil has come up with the idea of developing an environmentally adapted chainsaw lubricant with a new unusual base fluid. A field test with a tree-harvester shows unsatisfactory low temperature properties and high wear. In this work the viscosity, price and pour point of different combinations of the given base fluid and three other base fluids have been investigated. Desired viscosity and price are determined for different formulations. The new lubricants tested show lower pour points than almost all products on the Swedish market.A test equipment has been developed to investigate the wear.
Trädens utveckling efter att de har lämnats som naturhänsyn : tillväxt, mortalitet och strukturell förändring 6-18 år efter avverkning
Today green tree retention, together with leaving dead wood, is a common practice with the aim to reduce negative impacts on biodiversity and environment due to clear-felling. To better understand whether this conservation practice also makes a long-term difference, it is important to know what happens to these trees after harvest. Few studies have made an assessment of what happens to retention trees over a longer time period. In this study I inventoried retention trees that were left at clear-cuts six, twelve and eighteen years ago. I carried out a re-inventory of 57 retention patches (divided into free-standing tree groups, small swamp forests and edge zones) and free standing dead trees, spread over 25 previous clear-cuts in central Sweden.
Informationalismens Murar hotet mot information som positiv rättighet; en ideologianalys av WTO och dess avtal.
This thesis examines the ideological implications of an emerging shift in human rights-issues regarding information. As Intellectual Property becomes increasingly important to the economy of developed nations previously commonly owned or unprotected information runs a real risk of becoming privatized. The World Trade Organization and its binding agreements GATS and TRIPS are subjected to a critical ideology-analysis, with special efforts to elucidate possible effects on the public service realm and its commitment as provider of free information as a human right. The result suggests that not only does a threat to information as such a right exist, but that its ideological basis however seemingly rooted in a liberal/neoliberal context actually in its express views on information deviates from liberal/neoliberal theory in many ways, and that there are theoretical inconsistencies in that same ideology..
Free Valve Technology : ? Utveckling av ett styrsystem för ett elektronisk styrt pneumatisk-hydraulisk ventilsystem på en förbränningsmotor
Detta examensarbete är utfört på uppdrag från AVL Södertälje Powertrain Engineering AB.Målet med arbetet har varit att utveckla ett styrsystem för ett elektroniskt styrt pneumatiskhydraulisktventilsystem på en encylindrig förbränningsmotor i en testcell. AVL är enoberoende firma som utvecklar drivlinor med förbränningsmotorer samt instrumenterings- ochtestsystem. Ventilsystemet, med ett fungerande styrsystem, ska användas i AVLs utvecklingsochforskningsarbete på förbränningsmotorer.Ventilsystemet,Free Valve Technology, är utvecklat av Cargine Engineering AB och består avelektroniskt styrda pneumatisk-hydrauliska aktivatorer som opererar en motorventil individuellt.Aktivatorernas styrsystem har utvecklats helt iSimulink och implementerats som en integreraddel i det av AVL utvecklade motorstyrsystemet Raptor. Hårdvaran och plattformen är ett rapidprototyping system från dSPACE GmbH. Systemet har visat sig fungera tillfredsställande i entestcellmiljö vid lyfthöjder större än 3 mm och varvtal lägre än 2500 rpm, även underförbränning.
Upplevelseredovisning : Resursallokering i en restaurang
This study is about exclusion and childrens role-play in Swedish preschools. 8 preschool teachers, in 4 different preschools, have been interviewed about exclusion and low and high rating roles in children's role-play. The interviews was recorded and then analyzed. Relevant research in this study was from Corsaro, Tellgren and Löfdahl amongst others, and the results of the interviews is what this study is based on. The study showed that one of the most common roles in childrens role-play is the role of mother and that the roles children play are based on social norms and values.
Om konstruktionen av vetenskap i kriminalserier på TV : En kritisk diskursanalys av CSI och Bones
AbstractTitle: The Construction of Science in Television Crime Shows ? a Critical Discourse Analysis of CSI and Bones (Om konstruktionen av vetenskap i kriminalserier på TV ? en kritisk diskursanalys av CSI och Bones).Number of pages: 45 (50 including enclosures)Author: Lovisa SandbergTutor: Amelie HössjerCourse: Media and Communications Studies DPeriod: Spring 2006University: Division of Media and Communication, Department of Information Science, Uppsala UniversityPurpose/Aim: The aim was to explore the construction of science in the television crime shows CSI and Bones.Material/Method: The method used is critical discourse analysis based on the thoughts of Norman Fairclough. The analysis includes three episodes of CSI and three episodes of Bones,broadcast from between the 10th and 25th of April, in 2006 on Swedish television.Main results: The scientists in CSI and Bones are constructed as rational and calm; they are mainly concerned with finding the truth. On the surface, the truth is objective and reachable, although, in these TV-shows all observations are theory laden.Keywords: CSI, Bones, crime shows, television, science, discourse analysis..
Stresshantering ur ett ledarskapsperspektiv
Title: How to manage stress seen from a leadership perspective Authors: Lina Jonsson, Kristian Olsson, Mattias Olsson, Shabnam Tahajjod Supervisor: Marie Aurell Department: Department of Business Administration, IEM Course: Bachelor thesis in Business Administration, FEC 007 Question of issue: How can we understand stress managing at a workplace seen from a leadership perspective? Method: We have chosen a qualitative method for our thesis with inter-views as qualitative data collection. The interviews had a low grade of standardization. Result: On the basis of our question of issue we have drawn the con-clusion that it is important to create comfort at the workplace, that there are a safety and a feeling of handle the work tasks and that there is a plentiful information flow between managers and employees to manage to handle the workplace stress situa-tion..
Är goodwillnedskrivningar värderelevanta - En studie av den svenska aktiemarknaden
This study investigates the value relevance of goodwill impairments for equity investors in Swedish listed companies. We provide insight on whether goodwill impairments are value relevant before as well as after the implementation of IFRS 3 and IAS 36. We express market value of equity as a function of book value of equity; net income excluding goodwill impairments and goodwill impairments, using the Ohlson valuation model and Hellström's price regression. Our findings suggest that goodwill impairments are statistically value relevant for equity investors. Prior to the implementation of IFRS 3 and IAS 36, our findings imply that equity investors respond negatively to goodwill impairments.
Optimering inför insats : en idealtypsanalys av korvetten HMS Stockholm
I och med Försvarsmaktens omställning till insatsförsvar med internationella åtaganden har sannolikheten för att marina förband ska nyttjas för väpnad strid ökat markant. Med detta följer ett än större behov av att kunna hantera sådana prövningar. I den här uppsatsen provas idealtypsanalys som metod att mäta korvetten HMS Stockholms effektivitet ur ett organisationsteoretiskt perspektiv. Idealtypen, referensfartyget ?HMS Excellence?, skapas genom att använda 7s modellen (Waterman et al.) för att åskåda organisationen och resultat från den Amerikanska studien ?Excellence in the Surface Navy? (Gullickson & Chenette) som indikatorer för effektivitet.