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2488 Uppsatser om Free surface flow - Sida 55 av 166
Simulering av en framtida presslinje - en analys av design och prestanda
Problem areaAlfa Laval is a world leading company in the heat transfers area and have the vision to continue to be that in the future as well. The company has a lot of press lines where the utilization is high and also has started to become old. Prognosis shows that there is an increased demand of heat exchanger in the future. This increased demand is not something that existing lines will manage. To build new lines cost a lot of money and take time so it is essential that new lines are correct from the start and not need to be rebuilt or a lot of time spent to trim it.GoalThe goal is to achieve 100% theoretical utilization of the press (the press shall press the amount of plates it is designed for).
Hur tillförlitlig är värderingen av förvaltningsfastigheter?: En studie av tillämpningen av IAS 40
This thesis studies the way valuation of investment properties is conducted in accordance with IAS 40 and how reliable these valuations are. This has been conducted by studying ten Swedish real estate companies listed on the NASDAQ OMX, during the period 2005-2008. The study shows that all companies use valuation models to determine the fair value of investment properties. Two different types of models have been identified. Companies that use the cash flow model show inconsistencies in time horizon, and how they determine the horizon value.
Åkertistel : biologi och icke-kemisk bekämpning
A growing problem in Swedish herbicide free agriculture, the Canadian thistle has been the object of several new trials, seeking methods for non-chemical weed control. The new trials have mainly confirmed earlier experiences; that the most successful methods of control are springtime ploughing, repeated cutting and competition from a stout crop. Row hoeing has also been proven effective. As opposed to earlier recommendations, half season fallow has shown to be a risky and often ineffective method of control. Trials regarding biological methods have shown that above others thistle rust (Puccinia punctiformis) may have the potential of controlling Canadian thistle the future.
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Internetanvändning på Ronneby stadsbibliotek och Läsesalongen/Café Access, Stockholm
The paper aims to find out how staff and users at two public libraries and one Internetcafeuse Internet. The purpose has been to find out what they find and how they use the information they retrieve. The studies are based on eight longer interviews with the staff and 33 shorter with the users, who also were observed for a week. The paper includes a background chapter about Internet, search tools and the studied places. The following chapters are about previous research, our survey and a discussion with the results, literature and our opinion.We have found out that Internet is usually used for information retrieval.
Underso?kning av tryckfall relaterat till avstånd mellan två 90 graders kro?kar i cirkula?r ventilationskanal
Due to higher standards of living around the world, greater industries and larger infrastructures causes an increase of the global energy consumption. This harvest of energy puts a great stress on the global environment. With this development, it becomes increasingly important to utilize energy resources in the best possible way.Fans are components that are often used in the industry and in households. A common problem is that the fan is oversized. An oversized fan causes an excessive flow, which has to be adjusted in order to achieve the correct flow.
No Drum Kit! : Att producera så slagverk tar rollen av ett trumset
En studie i hur man kan arrangera, spela in och mixa slagverk i rollen som trumset. Artisten Nasimiyu Murumbas andra album Dig Deep innehåller en låt med trumset, Raise Your Arrow. Övriga har slagverk som täcker upp funktioner som trumsetet har. Processen beskrivs ur producentperspektiv med redovisning av arrangemang och analys av Raise Your Arrow samt tre av albumets övriga låtar, Free Ones, Dig Deep samt The Biggest Drum. Dessa analyseras från tre utgångspunkter: arrangemangmässig, konstnärlig och teknisk.
Svart på vitt i sjukvårdsreformens klassresa : En komparativ studie av den amerikanska sjukvårdsreformen i amerikansk respektive svensk dagspress
Motivation: The aim of this study has been to conduct a comparative study concerning how race, ethnicity and class is represented in American contrary to Swedish daily press and from there on to explore and explain similarities and differences that have been found in the material.Problem statement:? How is race, ethnicity and class represented in American contrary Swedish daily press?? What are the similarities and differences between the countries? daily news flow?? What causes the similiarities and differences to achieve their current form?Material: The material which has been the subject of this study consists of eight articles ? four American articles (USA Today) and four Swedish articles (Dagens Nyheter). The material has been elected to meet certain criterias and mainly discusses the effects the health care reform will have on the American population.Approach: The material has been approached by using theories concerned with race, ethnicity, class and framing. The method used to analyze the material was Critical Discourse Analysis (CDA).Results: The results shows significant similarities, although mainly differences, between the countries? daily news flow.
Dagvatten i Märsta : förslag till anläggning för ekologisk hantering samt metodöversikt
Stormwater in urban areas has been treated as a problem for a long
time. The large proportion of impermeable surfaces inhibits the water
from infiltrating in the ground to the same extent that it does in nature.
This causes intensive surface flow during rain, which in turn causes
inconveniences such as decreased accessability, floods and increased risk
of desease spreading. Drainage through pipes is the traditional and usually
functional metod for storm water disposal. That is as long as water flows
are moderate. But precipitation varies naturally in amount and intensity
and additional impermeable surfaces make some pipes insufficient for
heavy or lasting precipitation.
När gamla lagar och nya teknologier möts : En diskussion om den illegala nedladdningen av musik idag
Research shows that almost 30 per cent men and 20 per cent women at the age of 16-24 in Sweden download music on a regular basis instead of buying records. Thanks to modern technologies teenagers of today have become used to downloading music illegally from theInternet. Even though legal alternatives, such as Spotify, have become popular, the behavior of illegal download of music still persists. What do record companies do to prevent this phenomenon and why do they go to such length to stop this widespread movement? The question is, why is illegal download of music a problem ? and for whom? To investigate this I?ve read books about the subject, analyzed web pages of alternative record companies and interviewed a drummer in a local band.
På vilka grunder väljer föräldrar skola?
The study is made in Nacka, a suburb of the capital of Sweden, Stockholm, and focuses on ?the parental school choice" that takes place when children start in first grade at the age of six. New differences in the number of pupils attending various municipal schools have appeared after reforms in the early 1990s giving parents free choice of elementary school for their children. Some schools are located in areas where most children have a middle class background, while others are placed in less attractive surroundings where the parents have a lower educational status, and are more often immigrants. Parents living in the latter kind of surroundings can now send their children to schools further off, but located in more attractive areas. This leads to some schools get an increasing number of pupils and others gets a decreasing.
Personaloptionsbestämmelsen : Beskattning av personaloptioner enligt den nya lydelsen efter 1 januari 2009
The swedish rule concerning the treatment of employee stock-options have changed and the new wording of the rule will be applicable for the first time in 2010. The previous wording of the rule stated that the employee shall be taxed for the stock-option when moving abroad, even if the option is not exercised. The Swedish Skatteverket and Regeringsrätten have found that this rule is in conflict with the free movement of persons within the European Union. The new wording of the rule states that the employee shall be taxed when the option is excercised, no matter where the employee is situated. A state`s right of taxation of a stock-option determines wheter and to what extent the employee stock-otion derives from that state..
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.
Lek kring stol
The aim of this project was to develop a product which gives one or more objects of daily use an additional function. Thru the creativity of children the object shall transform into a new source for play for pre-school children.The purpose of this work was to research how fantasy and free play of children could be enhanced. I wanted to know how I can motivate children to use their fantasy transforming objects into new sources for play.This was achieved by means of developing a number of different prototypes which I tested in Kindergarden. My observations lead to the development of a cloth-wrap for the chair which provides the required source for ongoing role-play. The chair suddenly transforms into a new landscape and multi-purpose object where children?s fantasy is stimulated and creative play is supported..
Mean value modelling of a poppet valve EGR-system
Because of new emission and on board diagnostics legislations, heavy truck manufacturers are facing new challenges when it comes to improving the engines and the control software. Accurate and real time executable engine models are essential in this work. One successful way of lowering the NOx emissions is to use Exhaust Gas Recirculation (EGR). The objective of this thesis is to create a mean value model for Scania's next generation EGR system consisting of a poppet valve and a two stage cooler. The model will be used to extend an existing mean value engine model.
Ett förslag till arbetsmöbel för användning i det offentliga rummet. : -examensarbete i samarbete med Nola AB
During spring 2007, I Matilda Lindblom, undertook my Bachelor Degree project in Furniture Design. The supervisors were Agneta Stake at Nola in Stockholm and Leo Jóhannsson, teacher and examiner at Carl Malmsten CTD in Stockholm.The project was based on three elements:? Cooperate together with a producer for professional supervision? Learn to work from a given design brief.? To learn more about industrial production? Learn more about furniture for public areasI contacted a furniture producer called Nola AB, in Stockholm, who became my work partner during this project. The asked me to design a piece of furniture where you can sit and work with a laptop on. The target was for public areas, for example in parks, malls, or at airports.In cooperation with Nola, my ambition was to develop this piece of furniture that was the answers on their wishes and demands.