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933 Uppsatser om Vibration and acoustic engineering - Sida 33 av 63
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.
Den Moderna Webben: Kan HTML5 konkurrera med traditionell programvara?
Vi ser en förändring i hur vi använder applikationer. Från att tidigare varit
associerat till en dator och begränsat till ett par operativsystem finns de
numera överallt. Fler plattformar innebär att man måste utveckla en applikation
till var och en av dessa. Detta gör att utvecklingstiden och kostnaderna ökar
och efterfrågan av crossplattformlösningar i form av webbapplikationer har
därför ökat.
Vi tittar närmare på hur det går att använda sig av HTML5, och övriga tekniker
som en modern webbläsare har integrerat stöd för, för att utveckla webbaserade
applikationer. Vi tar reda på om det finns några hinder eller begränsningar i
detta och om det finns några fördelar i att använda webben som plattform.
Resultatet indikerar att med de nya tekniker som är på ingång kan man utveckla
webbbaserade applikationer med prestanda motsvarande Java eller C#.
Prestanda och webbramverk
I denna studie underso?ktes det tio vanliga ramverk inom webb branschen, ba?de
de mest anva?nda ramverken samt na?gra nya uppstickare som har va?xt mycket de
senaste a?ren. Fo?r att skala upp en hemsida till ma?nga anva?ndare a?r det
viktigt att strukturen bakom sidan presterar bra, da?rfo?r a?r det viktigt att
va?lja ra?tt ramverk. Sa? hur ska en webbutvecklare da? va?lja ramverk fo?r att
kunna uppna? en bra prestanda? Det a?r allma?nt ka?nt att anva?ndare la?mnar
sidor na?r responstiden o?kar.
Give me FAVE ? Fault Analysis for Vibration in Electronics
Ericsson har haft ett problem som påverkar deras mikrovågsradio. Detta problem handlar i grunden om mekaniska störningar som påverkar dataöverföringen mellan två radioenheter. Dessa störningar resulterar i bitfel på grund av olika orsaker. Dessa orsaker undersöks i projektet, för att i senare skede kunna förbättra precisionen av dataöverföringen. Genom att skicka signalerna med olika frekvenser på ett automatiserat och mer noggrant sätt, ökar möjligheten att testa radion i fler miljöer samtidigt möjligheten av att täcka ett så stort frekvensområde som möjligt ges.
Framtagning av en sängcykel för sjukvården
This bachelor?s degree thesis was conducted in mechanical engineering at Halmstad University during spring semester 2010 in close collaboration with the company Gremo AB, located in Ätran, Sweden. Gremo AB produces, developes and sales forest machines in both Sweden and on the international market.Gremo AB belongs to one of the market leaders in forest industry, especially with their forwarder. In order to become a market leader even with their harvester, the company decided to change the harvester to have a swivel and a leveling driver cabin.The aim with this bachelor?s degree thesis was to develop a design concept for the harvester driver cabin, which Gremo AB can apply on the new harvester.
Jämförande livscykelinventering
This bachelor?s degree thesis was conducted in mechanical engineering at Halmstad University during spring semester 2010 in close collaboration with the company Gremo AB, located in Ätran, Sweden. Gremo AB produces, developes and sales forest machines in both Sweden and on the international market.Gremo AB belongs to one of the market leaders in forest industry, especially with their forwarder. In order to become a market leader even with their harvester, the company decided to change the harvester to have a swivel and a leveling driver cabin.The aim with this bachelor?s degree thesis was to develop a design concept for the harvester driver cabin, which Gremo AB can apply on the new harvester.
Otydligheter i beskrivningen av Use Case-tekniken i UML 1.3
Use Case-tekniken används för kravutvinning under RE-processen. Under RE-processen utvinns och dokumenteras krav på det nya systemet. I detta arbete undersöks vilka oklarheter systemutvecklare som använder Use Case-tekniken upplever med beskrivningen av denna teknik.Hur Use Case-tekniken utvecklats och vilken kritik som riktats mot tekniken beskrivs även detta i arbetet.Undersökningen utgår ifrån hur de systemutvecklare som använder tekniken upplever att denna är beskriven och utfördes med enkäter och intervjuer.Svaret på undersökningen är att de systemutvecklare som använder Use Case-tekniken upplever att denna som helhet är tydligt beskriven. På detaljnivå upplever dock de svarande att teknikens beskrivning:* saknar stöd för på vilken nivå Use Cases skall utformas,* saknar bra exempel,* inte har tillräckligt fokus på syftet med Use Cases,* saknar stöd för hur Use Cases skall utformas,* inte beskriver skillnaden mellan generalisering och <<extend>>* inte beskriver skillnaden mellan <<include>> och <<extend>> tillräckligt väl..
Den demokratiska konsolideringen i delade samhällen - fallet Makedonien En studie om Makedoniens demokratiska utveckling efter den väpnade konflikten år 2001
The consociational democracy model in Macedonia, which came out from a warcrisis and a peace agreement from 2001, in addition, putting an end to the violent conflict, actually admits the division of the society along the ethnic lines. Paradoxically, there is an attempt to bridge the ethnic gap with this model. As a result, the consociational democracy model holds solutions that can be abused if somebody misuses its power and desires to disintegrate the country. The future development depends therefore on the moderate attitude of the citizens, and first and foremost, on the political elites and their commitment to the values of democracy and human rights instead of their nationalistic goals. Furthermore, thepresent democratic consolidation in Macedonia is established on the execution of the peace agreement and the improved effectiveness of the institutions.
Ideon Forskningspark : yttre arbetsmiljö i ett industriellt landskap
Abstract
Ideon Science Park was built on the edge of Lund city in mid-80ies. The Science Park was surrounded by open farm land and Lunds Faculty of engineering(LTH). The architecture, the facades of the buildings, were placed to face the faculty.
The Science Park has since then grown, and the actual front of the building is no longer faced towards LTH. The people working at Ideon are met by the backside, the meeting with Ideon is primarerly a meeting with fields of parkinglots.
The initiative to this thesis was taken by Ikano Fastigheter AB, one of two real estate owners of Ideon Science park. Their aim is to make the area easier to orientate, they want it to be more internally connected and with a stronger identity.
The thesis is mainly dealing with two questions conserning Ideon Science center.
Kvalitetsledningssystem enligt ISO 9001 : Produktionsprocessen
This report is the result of a thesis work done at the Department of Engineering Sciences, Uppsala University, and includes 15 ECTS points. The work has been performed at Företag A, a company specializing in electronics whose major product has become a sophisticated tool used by authorities across northern Europe. Företag A has initiated a quality management system according to the criteria set by ISO 9001. Following demands from customers, Company A has now decided to also start working towards a certification according to SS-EN ISO 9001:2008, this work is the foundation for the thesis work. The thesis work has been limited to the production process and the aim has been to enable this process to be certified according to ISO 9001:2008. The work has been performed by analyzing the existing quality management system and the requirements for each process included, whereby the gap between the current and the target state has been mapped. Suggestions have then been made on how this gap can be filled, some of these suggestions have also been carried out during the thesis work. The conclusions drawn are that quality management does not have to be complicated, but quickly becomes so when the complexity of the processes increases.
Genetisk modifikation möjliggör resistens mot mastit orsakad av Staphylococcus Aureus
ABSTRACT.
Mastitis is one of the most common diseases affecting dairy cows worldwide. In Sweden annu-ally about 60% of the dairy cows get infected and Staphylococcus aureus cause approximately 30% of these infections. Mastitis causes enormous economic losses. In Sweden, the costs to cure mastitis are estimated to be 192 million SEK per year, excluding the costs for mastitis prevention.
Gester för navigation i användargränssnitt på mobiltelefoner
Användandet av mobiltelefoner har blivit en del av vår vardag i dagens
samhälle. Mobiltelefonindustrin är en miljard industri med stora företag som
Motorola, Nokia och Sony Eriksson. De senaste åren har det även kommit in nya
aktörer på marknaden som Apple med sin iPhone och Google med sitt
mobiltelefons?operativsystem Android. Dessa aktörer har kommit ut med flera nya
mobiltelefonmodeller som använder sig ut av pekskärmar.
Avfall på byggarbetsplatsen : statistik som hjälper platschefen
The purpose of this report is to find a model of statistics for construction and demolition waste, which makes it useful for the local manager at the building site. The intention with the model is that it will be used as a support of the local manager, to direct his project towards reduced strain of the environment. The model will also be used to make it easier to control that the claims from authority and aims for the environment are achieved. To familiarise with the subject waste handling within the building and construction sectorI have done a literature search. I have also been studying rules and regulations regarding the waste handling.
Teknik i förskolan : En studie om pedagogers uppfattningar om teknikexperiment i förskolan
System Andersson AB is a company located in Jönköping that works with developing computer systems for the mechanical engineering industry. As of today, when this report is written, the company is working on the development of a new Manufacturing Planning and Control (MPC) system. This new system aims to create not only a user friendly interface but also a modern, stylish interface. To achieve this, the company has decided to work with a, for them, new application framework; Windows Presentation Foundation (WPF).System Andersson is well known for developing systems for different kinds of touch screens, this project is no exception. For this new user interface the company wishes to implement different types of Drag&Drop functionality.
Ljudet av William
Ett Film som projekt, en film om ljud, en film om ljudet i film. En film inspelad professionellt med professionella medarbetare. Kandidatarbetet gick ut på både skapa en film inriktad på ljud och skapa ett fungerande filmteam. Arbetet tar upp både det tekniska inom filmljud men även processen i ett filmteam. I arbetet följer vi processen från dess början till dess slut.