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561 Uppsatser om Sound emission - Sida 29 av 38

Upplevelsen av arbetsmiljö i öppna kontor inom IT-sektorn : - En kvalitativ intervjustudie

Aim:The aim of the study was to describe the experience of working environment in open plan office within IT- sector.Background:Previously was the most common office model cell office, open plan office is now the most common. A good working environment in theise two office types needs different attributes. A theory to explain relationship between health and unhealth is Karasek and Theorells demand- control- supportmodel.Method:A qualitative interview study was performed to gain a deeper understanding of the experience of working in open plan office within IT- sector. Ten informants from two different organizations were chosen. The result has been analyzed with qualitative content analysis.Results:The analyses resulted in three themes and six sub-themes.

Development of Liquid Cooling for PCs

In recent years, existing solutions for cooling personal computer CPUs have been supplemented by a new product category, factory sealed water cooling loops. These systems, consisting of a water block with an integrated pump, a fan and a radiator, perform well compared to the air cooling solutions but are less effective than larger, custom-built water cooling systems.This project aims to explore the most important aspects of a factory sealed system and to identify possible cost-effective enhancements of the performance.The most significant differences between the different groups of water cooling loops are the block design and the pumping power. The performance of both categories is also largely dependent on the fan power, but increasing fan power has a large negative impact on the noise level.Both radiator size and fan model choice appear, in tests, to be relatively unimportant, presuming that the noise level is kept constant. The position and direction of the fan, however, has significant impact on both the temperature and the sound level.Water blocks can be designed in several different ways, both regarding the heatsink design and the flow direction. In simulation, flow with the inlet centered above the heatsink result in considerably lower pressure drop and slightly higher temperatures than flow through the block, for heatsinks with fin arrays.Creating a competitive product in this product segment certainly seems possible, as there are performance-increasing changes to be made that seemingly has little impact on the production cost.

SPELA MERA : ?vidareutveckling av design och funktion på Interaktiva VideoTerminaler

This Master of Science thesis is conducted at the faculty Integrated Product Development at theRoyal Institute of Technology and in cooperation with EssNet Interactive AB, both situated inStockholm. In the report the final results and the road to get there is described as well as thedesign process and how the process is used to obtain the goal of this thesis.The author of this thesis has developed the design and the function of an interactive videoterminal (IVT) and by using semantics created an encouraging gaming design. The projectspurpose was to change the anonymous withheld shape and produce an experience of gamingmachine that has been absent. The work was aimed to answer the question: How does oneproceed to develop the IVT and by using semantics creating an understanding of gamingmachine?In general the author wants to show that small changes, with the help of design and its signals,can completely change the overall picture of a product.

Prosodisk förmåga hos svenska grundskolebarn med cochleaimplantat

Prosody can be characterized as the rhythm and the melody of speech. Prosodic features convey emotions, thoughts and geographic origins of each individual. Spoken language without prosody would be monotonous, without variations in loudness and rate. Children with cochlear implants perceive speech in a different way than children with normal hearing. Consequently the speech produced by a child with cochlear implants may sound different.The purpose of this study was to examine prosodic skills in Swedish children with cochlear implants and to compare them with the prosodic skills in Swedish children with normal hearing.

Optimering av bildkvaliteten för SPECT-undersökningar med 111In-Octreoscan vid Norrlands universitetssjukhus : -en Monte Carlo studie

Inom nuklearmedicinsk diagnostik används radioaktiva läkemedel för att utvärdera olika organs metabolism och fysiologiska beteende. Genom att använda en scintillationskamera kan strålningen som erhålls när det administrerade läkemedlet sönderfaller i kroppen detekteras och en funktionell bild över aktivitetsfördelningen erhålls. En tredimensionell bildvolym kan erhållas om gammakameran får rotera runt patienten vilket kallas SPECT (Single Photon Emission Computed Tomography). Bildernas kvalitet är av stor betydelse för att kunna göra en noggrann bedömning av olika patologiska tillstånd. Kvaliteten begränsas av en mängd faktorer och en av dem är Comptonspridda fotoner.I denna studie optimerades bildkvaliteten för SPECT-undersökningar med 111In-Octreoscan för ett Infinia Hawkeye 4 (GE Healthcare, Wisconsin, USA) SPECT-system vid Norrlands universitetssjukhus (NUS).

Personlighet och preferens för mobiltelefon respektive portabelt ljud

Tidigare studier har indikerat att extroverta personer använder mobiltelefoni mer än vad introverta personer gör (Inyang et al. 2010). En enkätstudie genomfördes för att testa sambandet mellan personlighetstyp och huruvida en frekvenspreferens gällande brukandet av mobiltelefoni eller portabelt ljud förelåg. Hundra stycken deltagare svarade på enkäten som bestod av tre delar. Fyra hypoteser var formulerade; extroverta förutspåddes vara flitigare brukare av mobiltelefon än introverta, medan introverta förutspåddes vara flitigare i brukandet av portabelt ljud.

Hundfoder mot hjärnans åldrande ? kan det fungera?

Due to better nutrition, veterinary and overall care, pet dogs? lifespan has increased. With more old dogs we see more health problems associated with age, among those cognitive decline, leading to deficits in learning and memory, disorientation, anxiety and other altered behaviors. Cognitive decline can have severe negative impacts on the life of both dog and owner, when the dog for example forgets being housetrained or starts being awake at night. Two pet food manufacturers have developed food with specific ingredients in order to improve cognitive functions or delay the onset of cognitive impairment. Hill?s Pet Nutrition has developed a dog food with supplements of a broad spectrum of antioxidants and mitochondrial nutrients, aiming to diminish oxidative damage in the brain, thereby maintaining brain function and improving learning ability.

Värdepapperisering av fastigheters hyresflöden

En stor del av fastighetskrediterna på den svenska fastighetsmarknaden kommer under de närmsta åren att refinansieras. Detta i kombination med striktare kapital- och likviditetskrav samt riskkontroll, innebär att fastighetsinvesterare kommer att söka sig till kapitalmarknaden för alternativa finansieringskällor. Detta öppnar upp för värdepapperisering av fastigheters hyresflöden som ett intressant finansieringsalternativ. Värdepapperisering är ett förfarande som innebär att relativt homogena tillgångar eller fordringar med förutsägbara betalningsflöden överlåtes till ett Special Purpose Vehicle (SPV) vars enda uppgift är att äga tillgångarna eller fordringarna. Förvärvet finansieras genom att SPV:n emitterar obligationer eller andra lätt omsättningsbara värdepapper som placeras hos investerare.

Tidningens anpassning till Internet : En jämförelse mellan papperstidningar och webbtidningar

Newspapers have undergone big changes with the progress of Internet and the newspapers establishment on the Internet. This adjustment to the Internet has resulted in differences between the content in newspapers and Web news sites. A quantitative content analysis and questions to Web authorities have been used in this study to describe what these differences are. During three days, three different newspapers were analysed and the conclusion was that many of the articles that were published in the newspapers also could be found in the newspapers Web versions. At the same time a lot of the articles on the Web news sites were not published in the newspapers.

Reglerstrategi för fria ventiler : ? Utveckling av en fyrtakts förbränningsmodell för att prediktera optimala ventilinställningar

As emission legislations across the world continuously pushes engine development forward,engineers constantly need to come up with and implement fuel saving technologies. During thelast decade, variable cam phasing has become a popular solution to increase gas exchangeefficiency. This configuration is typically mechanically constrained by camshaft limitations, anda solution to circumvent this problem would be to use a different valve actuation principle.One example of this is to use pressurized air controlled by electrical solenoids. Such a systemhas been developed byCargine Engineering and this provides the starting point for this work. Tobe able to operate the valvetrain on an actual engine, a control system is needed.

Koma som konst

In my work as speech and language pathologist I often meet people emerging from coma andtheir experiences intrigue me. Coma is an eluding human condition that offers a challenge formodern science and our view on body and mind. In my Master project in Creative Writing Iwanted to try to enter this zone that is so hard for a clinician to reach: the personal experienceof being in a coma. By writing HUSK MIDAS I have tried to create a realistic fiction based onresearch on coma state and real-life stories of people waking up from coma.In my exploration of the coma state I found that lucid dreaming is common apart fromdreaming, many patients experience sensory inputs like sound and touch which aremisinterpreted and woven into dreams and creating a feeling of confusion and fear.Coma is a frequent theme in literature and film but is often depicted unrealistically andmisleadingly. A few works like Artur Lundkvist?s Journeys in Dream and Imagination andthe film The Descendents by Alexander Payne show a more reality based fiction.

Audionomers tillvägagångssätt vid utvärdering av audiologisk rehabilitering: Fokusgruppsintervjuer med erfarna audionomer 2008

BackgroundOur main goal in the clinic is to offer rehabilitation for individuals with hearing losses. The outcome of audiological rehabilitation shall be evaluated in line with the HSL (Swedish health law 2008:3). It is most important to evaluate the results of the audiological rehabilitation for the individual as well as to make sure to reach the goals of HSL.AimThe aim of this study was to try to investigate the audiologists? opinions end experiences how to evaluate audiological rehabilitation. The aim with the focus group interview was to collect increased knowledge regarding questions, answers and observations audiologists consider when evaluating audiological rehabilitation.

Arbetsminne och receptivt lexikon hos barn med cochleaimplantat : en undersökning med SIPS och PPVT

Cochleaimplantat (CI) är en av de största medicinska innovationer som gjorts under de senaste 20 åren. Med hjälp av ett sådant kan barn med grav hörselnedsättning eller dövhet få möjlighet att höra och utveckla ett talat språk. Många barn med CI uppnår dock inte den förväntade språknivån. Orsakerna till detta är ännu inte fullt förstådda och vidare forskning är därför nödvändig. I föreliggande studie deltog 9 barn i åldrarna 6;7 ? 12;4 år med CI.

Förskollärares uppfattningar av ljudmiljöns påverkan på den pedagogiska verksamheten

Den pedagogiska verksamheten påverkas av ljudmiljön som antingen kan främja eller motverka kommunikationsmöjligheter. Då tidigare forskning genomfört objektiva mätningar efterlyses mer subjektiva studier, vilket denna studie syftar till. Syftet i denna studie är att undersöka hur de medverkande förskollärarna uppfattar att ljudmiljön påverkar den pedagogiska verksamheten. Studien ämnar även undersöka vad förskollärare uppfattar sig göra för att främja en god ljudmiljö. För att besvara syftet har följande frågeställningar använts:Hur uppfattar förskollärarna att ljudmiljön påverkar verksamheten?Vad uppfattar förskollärarna vara en god ljudmiljö?Hur uppfattar förskollärarna sig arbeta för att främja en god ljudmiljö?Den teoretiska utgångspunkten för studien är von Glasersfelds (1995; 2000) radikal konstruktivism och kvalitativa intervjuer har genomförts.

Nord Pools systempris - en studie av prispåverkande faktorer

The intention of this thesis is, from a basic statistical viewpoint, to capture the relationship between the price of electricity and a sample of factors influencing the price. The thesis also aims at investigating whether knowledge about the relationship is useful when investing on Nord Pool. Tested factors are temperature, import, price of emission rights as well as a number of hydrological factors. The investigated period stretches from year 2000 until week 32 year 2007. The relevance of each factor was also evaluated yearly as well as for shorter periods in order to get a more comprehensive view of the relationship.

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