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4545 Uppsatser om Digital cancellation estimation frequency phase amplitude fast - Sida 57 av 303
Komfortsanalys med hänsyn till vibrationer orsakade av människoaktiviteter. : Ett modernt dimensioneringsproblem för huskonstruktörer
Comfort analyses regarding human induced vibrationsIt is not too common among civil engineers in Sweden to perform comfort analyses considering the vibrations caused by human activities. In addition, the Swedish standards lack requirements to be used for comfort analyses in design of floor-systems. The demand for large spans in combination with slender slabs, is today a reason to investigate the floor-system constructions, in order to prevent disturbing vibrations and oscillations.The purpose of this thesis is to create a guide for how a comfort analysis, considering vibrations, should be implemented. Göran Svedenbjörk who is an expert in structural dynamics has been interviewed where he presents his latest project Värtaterminalen and answers some questions about vibrations due to human activities.Floor-systems, consisting of concrete slabs supported by steel or concrete beams, have been investigated with simulations in the finite element program Abaqus. In the simulations, the influence of various factors on the natural frequency of floor-systems and the acceleration level caused by dynamic loads, is studied.
Implementering av ESG-kriterier i investeringspraxis : En studie om venture capital-företag i Sverige
Purpose: The purpose of this study is to examine how venture capitalists implement ESG issues internally, as well as before the investment decision and during the investment period.Theoretical framework: The theoretical framework consists of previous studies that identify different driving forces behind the work of the ESG and present a number of different strategies for implementing ESG issues in the investment process.Method: This study aims at providing an understanding of a phenomenon which implies an inductive approach. This thesis applies a qualitative method of data collection in the form of semi-structured interviews. The sample in this study consists of venture capital companies that were members of the SVCA (Swedish Venture Capital Association) during the time of the survey, 2015.Result: The empirical findings in this thesis consist of a presentation of the data that was generated from eleven interviews conducted with eleven different investors in the venture capital sector.Conclusion: This study indicates a lack of written policies regarding internal work with ESG-issues which were offset by the application of the "unwritten" policies. Implementation of ESG-issues during the pre-investment phase was dominated by an avoidance of investments in sectors which lead to a negative impact on society. During the post-investment phase ESG-issues was integrated by monitoring the portfolio companies' operations.
Frekvensomriktare i hydraulhissdrift
Hydroware Elevation Technology AB sells control and regulation equipment for hydraulic elevators. The company now wants to investigate the possibility of changing their present softstarters to frequency inverters to supply power to their pump engines. They also want to investigate the possibility of future use in so called ?intelligent? houses.The purpose of this report is to investigate these possibilities..
Digitala tjänstens registreringsprocess ? hur påverkar den helhetsintrycket?
The outset of this thesis is to raise questions on how we design for the mobile context and the capabilities of smartphones. Not only the presentation but also the use of input and interaction between a service and a user.This work evolves around sign up forms and answers the question: How does the sign up process affect the holistic perspective of a digital service regarding usability and user experience?
This thesis consists of a case studies, and design experiments conducted on Twitter, Instagram and Randos sign up processes to explore if and how the usability, and the user experience could be affected and im- proved.This concluded some important aspects to be considered when designing sign up forms for a digital service.The usability, and the user experience is not only affected by user interaction, and the choice of input method but it?s also affected by which data the service is requesting, and more important; if that data is motivated to request by the service..
Märken i morgonljuset En kvantitativ studie av varumärkesexponeringen i Tv4:s Nyhetsmorgon
AbstractAuthors: Agnes Källén & Amanda RedinTitle:Level: Bachelor of JournalismLocation: University of GothenburgLanguage: SwedishNumber of Pages: 39With this study we aimed to answer the following questions: has the amount of brand exposure on the Tv4 show ?Nyhetsmorgon? increased between the years 2008 and 2013? And if so, how can the increase be explained by well-recognized research in the field?The media industry is changing toward an increasingly commercial content. In television, this change is mainly caused by the growth in shows watched on the web and through time shift, which is the act of watching something on a digital video recorder, or DVR. This gives the viewer the possibility to fast forward through the commercial breaks, and therefore forces the networks as well as the advertizer to find new ways to reach consumers. Hence the plausible growth in product placement and brand exposure.
Analys av massapumps- och mixerarbete vid Metsä Board Sverige AB, Husums Fabriker : Energibesparingsåtgärder vid blekeri 4 & 5 med jämförelse mot ny utrustning
Husums plant has a selection of different pulp pumps at bleaching plant 4 and 5. The displacement- (HC-pump, Sund Defibrator PTD-60) and centrifugalpumps (MC-pump, MCA 42-200, MCP 30/20) are of interest in this report. The centrifugal pumps are controlled by throttle valves, which result in an energy loss. Chemical mixers are used to mix ClO2 into the pulp before proceeding into a holding tower where the bleaching process occurs.The energy demand of the different positions has been measured or calculated to be used in comparisons against new equipment. Quotations were requested and delivered from Valmet and Sulzer.
Åsktransienter och överspänningar : En spänningsfylld simulering av elkraftsystemet vid Forsmark 3
A power system will inevitably be subjected to transient overvoltages, most often produced by switching operations and lightning strikes. These transient overvoltages may harm sensitive equipment without sufficient protection, but it is not an easy task to predict what transients may occur or how they affect the system. A fault occurred in a low voltage system at Forsmark 2012 and overvoltages from lightning were concluded as the probable cause. The three aims with this thesis are to develop and test a model of the power system at Forsmark 3, analyse the transient behaviour of the system when subjected to lightning surges and identify critical parameters, and lastly to provide a tool for investigating the protection of the system. The modelling and simulations were performed in the freely available simulation program LT Spice.
Posthumanism i förhållande till digitala spel
Detta kandidatarbete undersöker hur digitala spel kan skapas med någon annans
synsätt. Vi ville se vad som hände om vi försökte göra spel på ett
posthumanistiskt sätt och om detta hade förändrat något. Det har uppkommit
speciella möjligheter och konsekvenser under processen, det har även dykt upp
frågor. En av dessa frågor är hur skapandet av varelser inom digitala spel kan
utföras. Likväl har det under projektet skett diskussioner och tester runt hur
ett verktyg för detta ändamål skulle kunna fungera.
Undersökning av vissa beläggningars påverkan på antenners effektivitet i tågmiljö
For several years Uppsala University together with several companies has been involved in a WISENET project aimed at improving railway transport security. By placing a sensor system near the wheels of each wagon, the temperature of the bearings can be measured and transmitted to a collector placed centrally on the wagon. This in turn transmits the collected data to RFID receivers placed intermittently along the railway.As the signals are transmitted wirelessly, problems may occur as the antennas get dirty or coated with ice and snow. To determine the effects of these coatings, several tests were performed examining the reflection coefficient S11, the impedance Z11 and the efficiency eta of an antenna, and how they varied when various coatings were placed over the antenna. Examined coatings were ice, snow and water to determine the effects of weather, and various metal-based coatings: powdered iron both pure and partially oxidized, and iron ore granules.
En ny teknikkultur : äkthet i sociala medier
Denna studie ger ökad kunskap om hur en digital artefakt inom sociala medier skulle kunna uppmuntra till äkthet, som en motpol till profilering för att skapa en balans mellan profilering och äkthet. Studien barhandlar området ?hur och varför användare presenterar sig och för sig på ett visst vis i sociala medier?. Detta förstås och diskuteras med hjälp av de två ändpunkterna äkthet och profilering. Studien berör även designerns roll i detta sammanhang.Studien undersöker området genom en litteraturstudie, samt en egen kvalitativ studie i form av semistrukturerade gruppintervjuer.
Mjukvarubaserad 3D-renderare
Abstrakt
Produkten som jag har utvecklat är en mjukvarubaserad 3D-renderare. För att göra
en sådan produkt är man tvungen att gå djupt in i området 3D och utföra alla
beräkningar på egen hand. Dessa tar annars grafikkortet hand om.
Denna rapport förklarar varför jag har valt att göra en egen mjukvarubaserad 3D-
renderare och vad den är för något och i vilka områden den används.
Här förklaras även min syn på programmering, digitala spel, vad programmering
innebär för mig och hur min syn på spel har påverkat mig med tiden. Jag tar även
upp mina tankar om spelindustrin och samhällets misstolkade värderingar av spel
samt vad för sorts spel jag anser skulle gynna mänskligheten i framtiden. Vad
jag
tycker om utbildningen Digitala spel nämns också samt hur jag tror att den
skulle
kunna förbättras.
Slutligen följer en kortfattad beskrivning av hur mitt projekt har genomförts.
Abstract
The product I have been developing is a software based 3D renderer.
Tingsryds Travbana
Our bachelor thesis is a visualisation made in 3D-graphics of how the horserace track in Tingsryd perhaps will look like in the future, complete with a miletrack, steeplechase, and other horserace courses. Today, the race track is only in it?s building phase. The inner field-group in Tingsryd needed presentation material to show their eventual sponsors, so they contacted us at Media Technology, and we instantly decided to give their idea a try..
Löneutvecklingens bestämningsfaktorer i Sverige
The purpose of this essay is to acquire variables that explain and may be used as a base for wage estimation in the private sector in Sweden. The factors that are assumed to have an impact on wage estimation are based on earlier Swedish and international studies. Business survey data, which is based upon monthly questions to firms in various sectors of the Swedish economy posed by the Swedish National Institute of Economic Research, will be analyzed to find out weather they have an impact on Swedish wage settings or not. Tests including business survey data are yet rarely frequent, why this essay will be some kind of a pioneer within the area. To estimate significant factors that influence wage setting in Sweden, three different wage equations have been modeled and tested with a regression model.
Hur påverkar en ökad andel solceller Umeå Energis elnät? : ? En utredning med fokus på spänningsvariationer och osymmetri inom landsbygds- och tätortsnät vid en- och trefasanslutning av solcellsanläggningar
A good power quality can be an important prerequisite to achieve a sustainable society. Scandinavia's electrical system is in many respects superior, and Sweden has a fossil free electricity generation at 97 % and a reliability of electricity distribution at 99.98 %. Meanwhile, the EU has an ambition to expand the electricity market in order to achieve a joint trading business across Europe. This cross-border market will result in a large proportion of fossil energy sources integrated into our electrical system, which also leads to an increased need for renewable electricity production in Sweden. One part of this development is to increase the share of renewable micro generation that is locally or regionally connected to the power grid.
When 2 become 1 : En studie kring betydelsen av samarbeten mellan artister och företag
The aim of this study is to create understanding of why companies should collaborate with artists and how artists and businesses build strong partnerships. We also want to understand the development of relations between the music industry and companies, together with the problems, possibilities and implications it has for both artists and corporate identity and brand. The music industry has been changing rapidly during the digital revolution and new problems and opportunities have emerged which the music industry can choose to either embrace or renounce. This study is made with a qualitative approach based on interviews with relevant individuals from the music industry. We have carefully chosen these individuals to counterpart different segments of the music industry and to execute our purpose from various perspectives.