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2193 Uppsatser om MatLab clear - Sida 19 av 147

Vibrationer i bjälklag : Förenklad metod för dimensionering

Arkitekter och byggnadskonstruktörer har alltid strävat mot egna lösningar. Även om byggmetoderna är lika för tidsperioden, skiljer sig byggnaderna åt. Utvecklingen inom byggindustrin går samtidigt mot bjälklag som byggs slankare och med längre spännvidder för att utnyttja materialets styrka och samtidigt skapa öppna planlösningar. Detta sänker bjälklagens egenfrekvenser, vilket gör att de riskerar att sammanfalla med lastfrekvenser från personer som vistas på bjälklaget, vilket i sin tur leder till kraftigt förstärkta vibrationer. Responsen i strukturen kan bli så stor att människor känner stort obehag när de befinner sig på bjälklaget.

Utvärdering och implementering av automatiska farthållare i fordonssimulator

Vehicle simulators are becoming more common in vehicle industries. Company earns lot of money on simulations instead of real tests. Real tests are necessary but not made so extensively as before.In this thesis the building of an vehice simulator will be described and a comparison between three different cruise controls. The three cruise controls are PI-regulator, a regulator who regulates after positions in the terrain and a MPC-regulator. The reason for choosing this three is to see the difference between simple regulation and more complex regulation with respect to fuel consumption, travel time and complexity.The vehicle simulator is made in Matlab/Simulink, Visual Studio and Open Scene Graph.

Retention of stumps on wet ground at stump-harvest and its effects on saproxylic insects

Low stumps represent on their own up to 80% of the dead wood remaining on clear cuts and therefore supply suitable habitat for saproxylic insects i.e. insects depending on dead wood for their survival. Recent stump harvesting activities threaten this substrate of ecological importance and increase the anthropogenic negative impacts on these species. Because of technical and environmental reasons (nutrient leakage, erosion) guidelines for stump harvesting recommend to retain stumps standing in wet parts of clear cuts. However, stumps in wet positions might not be a satisfactory substrate for saproxylic insects and therefore might not be as much used as stumps in dry positions.

Design och framtagande av mätanordning för ström och effek på trefas ledare : Josi Periferi strömmeter

The assignment is issued by Scania Maintence AB seeking a new approach to detect power changes in their industrial processes. The work has taken place at Ångströmslaboratoriet and tests have been performed at Scania AB Södertälje.Today?s society consumes enormous amount of energy. In both economically and environmental view, it is important that the processes are effective, with high power factor. There are many ways to measure power in the industry, what they all have in common is that the installation is advanced, requires time and planning.

Riksteatern: Hur styrs folkrörelsen?

Riksteatern is a Swedish movement which was formed during the 1930s. The movement now consists of 230 local societies and had 545 000 visitors last year. The purpose of this thesis is to investigate how a movement, mainly financed by the Swedish government, is run. To be able to understand this, the theories of Pierre Bourdieu are used together with organizational theories. The empirics are collected mainly by semi-structured interviews made with employees at Riksteatern.

Till  framtida utvecklare

The report is about efficiency of a current production group where there is no clear production flow and there are some buffers between the operations. The efficiency is done with the help of a tool that is calledWork process of flow production which is used by Atlas Copco CTO. The most obviously results are that the lead time drops from 25 hours to 425 minutes and that the balancing loss decreases from 85 % to 8 %. The report focus on decreasing transports, decreasing buffers, more reliability in lead time and quality. And a more stimulating labour content for the workers is another result..

Medling enligt föräldrabalken (FB) : En studie om domarnas syn på medling

This paper is based on a study seeking answers to questions about how the judges at district courts look at mediation as a way to deal with custody and visitation disputes between parents who do not live together. The questions posed in this study are: When is a mediator appointed? What result do judges expect to mediation? What do the judges say about how a mediator should work? What are the judge?s opinions about the lawyer?s role in these cases? Finally, how do the judges define the children?s needs and how do the judges check that the solution is best for the child? The study also aims to compile theories of mediation, to create new knowledge and to possibly develop new research questions related to mediation. The study is a qualitative case study with law sociological and abductive approach. The interviewed judges all have a lot of experience in family law cases.

Vägvisning för säker logistik vid hästtävlingar : att vägleda nybörjare och erfarna inom ridsport

This report describes how I worked with a spatial information problem, where the focus was to produce clearer barriers between horses and spectators at equestrian competitions. My background as a competition rider, combined with my knowledge of the spatial design, has caused me to react to how the information on riding and racing facilities deficiencies. Experienced people in the riding know how they should act with the horse. But novices who are unfamiliar with the situation is not aware of the risks it may pose to move among horses. The study was conducted on the national facility Strömsholm which both experienced and novice equestrian visits.

Övergödning i Laholmsbukten  En studie av Laholmsbuktens övergödningssituation

This essay discusses the Laholm?s bay and its eutrofication problems. The question of issue is: Have the efforts to limit the eutrofication in the Laholm?s bay been effective? What is the local actor?s opinion whether the measures have been effective or not? What efforts have been made to prevent the leakage of nutrients from fields and forestland? The Laholm's bay is located in the south part of the Swedish west coast. The problem was noticed in the 1960´s by local fishermen that experienced a lack of catch.

Privata markägares attityder och inställningar till föryngringsfrågor :

Even though Sweden is a small country which has a low rate of inhabitants is it one of the worlds leading nations of exporting products from the forest industries. The Importance of a sustainable use of the Swedish forests has been known for many years. In 1903 the first law of forestry were establish. Today the National Board of Forestry carry out inventories of regeneration result. The result of the latest inventory showed that especially the non-industrial private forest owners did not full fill the regeneration work after a clear cut.

Formulera-Kommunicera-Utvärdera

The Swedish governments goal for the public health is to operate for a society with good conditions to be healthy. Many people today are very conscious about their health, at the same time alcohol is a recurring element in many day-to-day situations. IOGT-NTO is an organization that is working towards making sobriety to be the rule rather than the exception. This work is linked together by the organizations communication, which is a vital part to be able to present a unified view outward. In order to do that, it is particularly important that there are common goals and strategies to work towards.

86 Dagar 16 timmar 25 minuter : En kvantitativ innehållsanalys av nyhetsbevakningen kring oljeutsläppet i mexikanska golfen 2010

Purpose: When the Deepwater Horizon oilrig in the Gulf of Mexico faced disaster in late April 2010, news coverage immediately began of the disaster that would unfold. BP took the blame and its financial resources were strained as it struggled with stopping the oil leak, cleanup work as well as its PR image. While the US took many blows of the consequences to ecosystem and tourism, financial consequences swept across the world, mainly Britain, where BP had its headquarters.The event gives an excellent chance at comparing the media coverage from both the US and Britain. By studying The Daily Telegraph and The New York Times, we want to see both similarities and differences in the themes they focused on as well as seeing trends in the themes over time.Theories: The theory chapter is heavily based around the Agenda-setting theory in the media communication field.Methodology: A quantitative content analysis (QCA) of some 500 news articles in The Daily Telegraph and The New York Times from April 22 to July 15. The QCA was made to find the main theme of articles to give us data on how many articles of each theme, as well as their distribution over time.

Doing well by doing good : Hur kommunikation och anpassning av CSR skapar värde

Background: Today, It?s not uncommon that international companies and organizations have a higher turnover than the GDP of developing countries. Consequently, this may suggest that the choices companies make in the context of their business has a great potential to influence the world from an economic, but also from a social and environmental standpoint. From this the notion emerged that companies have a responsibility, referred to as Corporate Social Responsibility (CSR). A clear definition of the CSR concept is difficult to find, more than 37 different definitions has been identified.

Modellering av reserv- och nödkraftsystem i JAS 39 Gripen

Simulation is a vital tool during development of JAS 39 Gripen, since money and time can be saved.The Auxiliary and Emergency Power System, AEPS, is a subsystem of the secondary power system in Gripen. It has the function of providing the aircraft with electrical and hydraulical power before activation and after deactivation of the main engine. The system also functions as backup in case of a safety critical problem in the main power supply system. The system basically consists of a control unit and an auxiliary gearbox. The gearbox is driven by an air turbine.

Drivaxeltrycksreglering hos tunga fordon : För en ökad framkomlighet vid vinterförhållanden

Heavy duty vehicles often have problems with traction during the winter periods. For vehicles that can lift tag axles it is possible to increase the normal force on the driven axle by lifting one or more tag axles, this will then increase the propulsive force of friction. This however increases wear on both road and vehicle. A possibility to reduce the wear while achieving nearly equivalent traction compared to lifted tag axles is to allow the vehicle to regulate the normal force by lowering the pressure in the air suspension associated with the tag axles or by the lifting of these axles. The vehicle would then by itself be able to set just the right amount of normal force on the drive wheels to avoid unnecessarily high normal forces while maintaining sufficient traction.The purpose of the report is to find out which parameters affect heavy duty vehicles when driving on slippery slopes and how traction can be improved.

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