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1615 Uppsatser om Two phase flow - Sida 41 av 108

Testbänk för luftlager

Test bench for air bearingsThis thesis work consisted of bringing forward and defining the test parameters relevant for a test bench and constructing a test bench that can test and verify the largest existing air bearings that are of use in Micronic Laser Systems AB machines. Because the knowledge about air bearings is limited it is thought that with the help of the test bench the knowledge would increase and in that way improve the air bearings.After learning more about air bearings and their purpose at Micronic Laser Systems AB, I started the concept phase for the test bench. For each part in the test bench I consulted my two tutors, Torbjörn Hedevärn and Johan Bergqvist, at Micronic Laser Systems AB. The final concepts where documented as 3D-modells in Solidworks and some of them have been tested in Solidworks FEM-program.The test bench is designed so that, with the help of a pneumatic cylinder, 25 kilo weights are placed on the air bearing to test its stiffness, damping and the pressure performance under its surface area. To test these parameters the test bench has to have a pressure meter, accelerometer and a microcator.

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.

Modularitet och objektorientering : Byggandet av ett program som kan visa en molekyl

The development of IT systems is usually accomplished by some form of system development methodology. It can be performed as the waterfall method, where each phase is completed before the next begins. One of the reasons to follow a development methodology is that the process is more structured, faster and that the product will have higher quality. One risk of not using a system development approach is that the code can be unstructured and difficult to maintain.This paper describes an alternative method in which the development occurred without the use of any system development methodology. This has been possible because there was a clear goal of the program that should be developed.

Sambandet mellan hästens huvud/halsposition och ryttarens rörelse i sadeln :

Dressage schooling is not a subject that rests on science, it is a matter of dependable experience. So far there hasn?t been so much research about it, but more and more is done. Especially the interaction between rider and horse is a nearly uninvestigated field. Riding skills is much about having the right position, and having the horses head and neck in different positions, but there are no research done that support or deny that this old ?knowledge? is for the best for the horse. This study was performed to evaluate if the head and neck position of the horse, and the velocity, has any influence on the position of the rider.

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.

AI i verksamheter: Ett effektiviserings- och riskhanteringsperspektiv. En studie om till?mpningen av AI i organisationer

The purpose of this work was to investigate and provide understanding regarding how AI can be used to make organizations more efficient, where risk management is also discussed. The basic model for the study is the Resource-based view, which is about making use of one's resources which are described through many different perspectives. The method used for this study was a qualitative analysis, which was applied through interviews with several people with high positions within companies and relevant skills, based on insight and experiential knowledge.These people work in different industries, therefore a large part of the work was intended to carry out a comparative analysis between a line of different businesses. The results showed that AI is in a developing phase, and based on the respective industry, it has developed in different ways. Finally, it turned out that AI can make businesses more efficient by, among other things, managing data and automating various work processes faster compared to humans.

Utveckling av en webbaserad donationstjänst för företag  som involverar medarbetarna i processen

In recent years, employees at large companies have started to demand that their employer should work more for good causes. The money the company wants to donate to charity is distributed mostly through a vote to decide where the money will be remitted. The purpose of this design case is to develop a design concept for a web-based donation service that involves all employees at a company. Furthermore, the authors of this study intends to explore how the motivation for employees of a company can be affected by participation in this service. In this design case, the service function, quality and concept was tested and evaluated.

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.

Lean Product Development - Will it deliver products faster, better and cheaper?

Abstract Tutor - Anders Richtnér History - Theories suggest that Lean Product Development strategies dramatically increase a company's performance through enabling faster T-T-M, Quality and Costs of Product Development. Purpose - The purpose of this paper is therefore to investigate whether the implementation of LPD actually affect corporate performance measurements T-T-M, Quality and Cost, in a positive way. Methodology - This Bachelor thesis is an exploratory investigation of the concept of Lean Product Development within a global IT- company, performed through four case studies, interviews and complementing corporate performance data. Findings - With empirical data and subsequent analyzes in mind, we note the following; it is clear that the project that produced the best results, in terms of T-T-M, Quality and Cost, also was the one furthest in the process of implementing Lean Product Development..

Den positiva hälsovågen : En kvantitativ studie om hälsofrämjande arbete

The construction of buildings and paved surfaces changes the natural water balance.Precipitation generates surface runoff and storm water instead of infiltrating into the soil.Storm water has come to be considered as a major source of pollution in lakes and streams inthe vicinity of urban areas. Reduction of pollutants in storm water is a key action in order toprotect sensitive recipients and maintain high water quality. Storm water is traditionallytransported by storm sewers to the nearest recipient. In recent years the approach to stormwater management has changed; storm water should primarily be disposed of on site, throughlocal disposal of storm water, LOD. LOD is created by a combination of the function ofseveral smaller local facilities and the general sewer system.

Hur kan gränssnittet mellan sjukhusvård och eftervård för

The aim of this Bachelor?s thesis is to obtain understanding and knowledge about how literary scholars collaborate regarding information. Seven scholars have been studied in the aim to find out social and cultural elements which create particular prerequisites for their practice, with focus on information sharing. The method used has consisted of semi-structured interviews. The informants have been studied from a socio cultural and domain analysis starting point, which means that they are studied in the light of being members in their practice.

En undersökning av den kreativa processen

Syftet med vår studie är att undersöka hur människor där den kreativa processen är central i sitt yrkesutövande upplever denna process och se om det går att hitta ett mönster. Vi bestämde oss för att ta reda på vad som händer inuti människan runt det kreativa ögonblicket. Vår huvudfrågeställning är: Vad är den kreativa processen? Vi gjorde öppna intervjuer med fem verksamma kreatörer med hjälp av DV-kamera. Vårt resultat visade att det gick att se ett gemensamt mönster i den kreativa processen.

Jämförelse av två mätmetoder för mindre gasvolym

Two different methods for measuring biogas production were used, gas meter and gasbags. The gas meters were electronic and counted each time a certain gasvolume passed through them. The gasbags collected the gas that hade passed through the gas meter until a manual measuring could be done. The two different methods gave the same result for a volume at three liters but for a volume around 0,2 liters they did not. Accuracy and precision for the gasbags was more exact than for the gas meters even if the method was difficult with a lot of different elements that could affect the result.

Safe Sleeping Position

Project Safe Sleeping Position (SSP) contains all parts in a product development phase. The project comprises the whole cycle from idea to a complete product where all aspects are included. The scope is to develop an innovative solution for a common known problem and work with all parts within the man-machine-way. The result is an inflatable product which secures a child in the correct way for the seatbelt to work properly in the rearseat of a car. Ergonomics, technical extent, usability, design, construction, product solutions and market potential are some of all parts witch the project includes.

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