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1516 Uppsatser om Noise solution - Sida 21 av 102
Taluppfattning i ofördelaktiga förhållanden : Hur pa?verkar kognitiv fo?rma?ga perceptionen av enstaviga ord i brus besta?ende av talande ro?ster?
Inom disciplinen kognitiv ho?rselvetenskap tilla?mpas en integrerad ansats da?r taluppfattning beskrivs ur ba?de ett auditivt bottom-up-perspektiv och ett kognitivt top-down-perspektiv. Studien underso?kte hur taluppfattning varierar med, respektive utan top-down-sto?d och vad de kognitiva fo?rma?gorna uppma?rksamhet, minne och inhiberingsfo?rma?ga hade fo?r inverkan. Taluppfattningsfo?rma?ga utva?rderades med hja?lp av ett Speech-In-Noise-test (SIN-test) som bestod av tre deltest da?r enstaviga ord presenterades i en ofo?rdelaktig miljo? besta?ende av ro?ster som talande i mun pa? varandra.
Inventering av internationella bullerskyddsåtgärder för höghastighetståg
Utvecklingen inom järnvägssektorn går mot snabbare och mer effektiva transporter, dock begränsas utvecklingen av att det krävs nya och mer utvecklade spår och tåg för att uppnå det. Med dagens infrastruktur och tågmodeller är hastigheter på 200 km/h det maximala. Behovet att öka kapaciteten och införa höghastighetstrafik i Sverige utreds i nuläget. Med höghastighetstrafik avses hastigheter på minst 250 km/h. Banverket har som förvaltare av järnvägen ett sektorsansvar för miljön och således även buller.
Radomoptimering för luftburna störsändarkapslar
These studies are done in behalf of Saab AB AVITRONICS in Järfälla in the form of a thesis atthe Royal Institute of Technology in Stockholm.The task was to examine the parameters that plays a role in the construction of modern radomesoperating in broadband applications.This was interesting for Saab to get an indication of which way they should go at the newdevelopment of radomes for the next generation of equipment for electronic warfare.After a thorough analysis of the influencing parameters, a optimization application was made toget a automated way to get a radome design by specifying data on the radome size, airloads,materials, etc.This is to minimise the time of the laborious work that radome development.inply.This was solved by letting ANSYS calculate the strength of the radome structure and MATLABcalculate electromagnetic data and cost models of different sizes and materials.All these parameters woven together with the optimization tool modeFrontier picks data from therespective program and perform an optimization algorithm and then iterate a step and sends thisdata to calculation programs for the new input data. In the end, we have received a convergedpoint with our optimal solution.For the presumptions and limitations for which applied for this thesis, the result was prettyintuitive. That is to say that the smaller radome - the less materal is needed and lowermanufacturing costs results in the cheapest solution possible. The reality is not so simple. Whereyou have to take more of the electrical details such as the effect on the transmitter as a majorfactor..
Effektivisering av lagringsplatser. Ett förbättringsprojekt på Mekpart AB
Aeroseum is an aviation museum located in an old military underground hangar. The ventilation system in the hangar is designed for the military purpose of the hangar. This design includes a solution with air flowing through the space between the construction of the hangar and the rock surface. The solution is intended to avoid a buildup of inflammable gases. This design leads too high humidity levels in the hangar.
Det (väst-) europeiska samarbetet - från säkerhetsdilemma till stabil fred
In this essay the morphing of the interstate relations in the post-World War II Western Europe is taken in to consideration in discussing how these relations were stabilized and consolidated through community cooperation to achieve a state of stable peace. It concludes that the early 1900's of Western Europe comes close to being conditioned by Herz's security dilemma and then continues to analyze the development from this state to one of stable peace. In this analysis pivotal features of the ECSC, EEC and the EC are being scrutinized through the use of Boulding's Stable Peace theory and developments of the very same, in separate case studies, in order to account for the Communities? influence on the peace process.In doing this, conclusions are drawn that external pressures can be very effective in creating an incentive to move beyond an initial state of conflicting self-images and that a stabilizing process has got to provide a long term solution in order to sustain a trustful relationship. In order to provide this long term solution the community cooperations suggests that locking in through institutionalization, harmonization, and the creation of a state of irrevocable interdependence are highly effective..
Områdessökning i geografiskt associerad data
This thesis considers the problems associated with searches in insufficiently geographically tagged data. The thesis was carried out at Booli Search Technologies AB, a company developing a search engine for the Swedish real estate market.The aim of the thesis is to identify some areas of possible improvements of the company?s existing technical platform, perform a benchmarking among similar services, suggest possible solutions and lastly, build a prototype from one of the suggested solutions.The thesis starts out with defining the problems that the search engine faces: some areas are not possible to perform searches on, the users are not presented with the full search result that they expect, some results are placed incorrectly on the map associated with the search results and results are also not described with enough geographical information. These problems are due to the fact that the data retrieved at the indexing stage in the company?s information retrieval process are insufficient and incomplete.As a result of a benchmarking process and after discussing the results, severalinteresting solutions were identified.
Punktmolnshantering i anläggningsprojekt : Utvärdering av programvaror för framtagande av markmodell
An increased number of participants in the construction industry is asking for accompanying terrain models to the project in order to get a better understanding of the field. When the desire to create buildings that fit together nicely with the surrounding area is increasing, it becomes more and more important to have a broad base of knowledge about the ground on which the building is to be erected. Terrain models are also very useful in the planning of logistics, documentation for landscape architecture projects, and billings for mass calculations.Surveys for creating terrain models can be performed with laser scanning. The advantage of laser scanning is the time-effective surveying, the detailed information as well as the ability of application in complex environments resulting in a cost-efficient project. With this in mind our thesis was defined in collaboration with the company Bjerking AB in Uppsala in order to investigate if there were any softwares suitable for terrain modeling.
Användbarhetsutvärdering av det lätta sandwichmaterialet Hybrix för bilkarossapplikationer
This M.Sc. thesis is a material application evaluation commissioned by the advanced body engineering department at SAAB Automobile AB. The purpose of the thesis is to evaluate implementation of the innovative sandwich design material Hybrix into an automobile body. Today the most commonly material used in the body is galvanized steel sheets and by shifting material to Hybrix several problematic issues have to be dealt with. Hybrix is an innovative sandwich sheet that inherits thin stainless steel face sheets and a stainless steel fibrous core.
Musikvärldens karta och kompass : En designstudie om hur musik kan åtkomliggöras digitalt med minskade krav på musikkulturell förkunskap
Syftet med detta examensarbete var att kommunikativt sänka kraven på musikkulturell förkunskap vid interaktion med det digitala musikarkivet Every Noise At Once. Studien tog stöd i teorier inom kognitiv semantik och teknisk kommunikation.De metoder som användes var omvärldsanalys, expertintervjuer och receptionsanalys. Längs arbetets gång formades en hypotes som sedan prövades genom empirisk datainsamling och analys av denna.Resultatet antydde att vi förstår musik, och gör oss språkligt förstådda om musik, via taktila och visuella metaforer. Detta resultat guidade sedan gestaltningen av en prototyp där utvalda akustiska attribut översattes till liknelser med taktil och visuell koppling. .
e-infrastruktur som stöd för hemtjänsten
The annual cost of home care services of transport in Falun/Borlänge, is now at 31 million kronor. It is clear from previous research that it is possible to reduce these costs through a restructuring of the existing home-help service. The restructuring aims to have a higher proportion of older people, who are in need of care, to live in special accommodation, in order to reduce transport costs. Therefore there is a need for systems that allow home-help service to plan their operations in such a way that transport is working as efficiently as possible. Through better planning, there are profits to be done.
Stommaterial för villor - trä eller betong?
We have the tradition in Sweden to build villas and houses with a wooden framework. It has become natural for us because we have so much forest in our country. Building with wood has advantages, it is easy to process, but also disadvantages, as it is sensitive to moisture.Finland has long made use of the thermal blocks to build villas. It is a type of bricks that are a bit like a sandwich element, with a core of EPS and concrete on both sides of the core material. The concrete is hollow, so that after the walls has been bricked up you pour concrete into the hollow bricks.The issue of this report is to find out if concrete can be an alternative to wood as framework material in villas.
Cirkulationsplatsers inverkan på vägtrafikbuller
I dagens samhälle är runt två miljoner svenskar störda av trafikbuller, samtidigt som bilismen och vägtransporterna ökar. För att få en säkrare trafikmiljö med ett jämnare körsätt är det populärt att bygga om vanliga korsningar till cirkulationsplatser.Denna rapport fokuserar på vad som händer med bullernivåerna då trafiken passerar en cirkulationsplats. Undersökningarna har genomförts genom att beräknade bullernivåer jämförts med uppmätta värden från olika cirkulationsplatser. Arbetet inleds med en litteraturstudie om ljud- och bullerfrågor.Bullermätningar utfördes vid totalt åtta olika cirkulationsplatser, där både ekvivalentnivåer och maxvärden samlades in. Därefter beräknades medelvärden av dessa.
Digital signage i butikshyllan - Kan interaktivitet skapa ytterligare en dimension av påverkan vid köpbeslutet
Interactive media is constantly increasing in our surroundings and with the innovation of touch-screens, two-way communication with screens has become part of our daily life. Still, this well known way of process information is not often seen in the in-store environment of grocery retailing. Here, interactive media is an unestablished field where empirical studies are invisible within the academic world. The lack of knowledge in which effect interactive digital signage has is one of the barriers of investing in this marketing solution in-store. The main purpose of this study is to examine and describe the effects of interactive digital signage at shelf within grocery retailing.
Kontrolltorn : En informationslösning för tredjepartslogistik
The demand for shorter lead-times and increased delivery reliability puts pressure on companies to provide more efficient logistic services. One strategy to deal with this demand is by outsourcing logistics to a third part. The development of logistics information systems enables increased control over business supply chains. This is why Green Cargo aims to create a Logistics Control Tower (LCT) solution to provide it?s customers with better information with higher availability.
Guru, kritisk vän och förebild : En kvalitativ undersökning om hur några studenter på Södertörns högskola upplevt sin VFU
The Swedish teacher education is continuously changing along with the understanding of learning. The teacher education at Södertörn University has an intercultural profile, which is considered modern and innovative. In this essay, students? experiences from their practical training are analyzed to examine the correspondence between teacher practice and the modern teacher role conveyed by the University. The results show that some students have experienced practical training where the standards of the University?s teacher role were met, whereas others feel that they have not received the practical guidance needed to be able to wholly use their education in their future employment.