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870 Uppsatser om Variable reduction - Sida 3 av 58

Känslighets- och osäkerhetsanalys av parametrar och indata i dagvatten- och recipientmodellen StormTac

Three methods of sensitivity and unceartainty analysis have been applied to the operative stormwater- and recipient model StormTac. The study area is the watershed of lake Flaten in the municipality Salem. StormTac?s submodels for stormwater, pollutant transport and the recipient are cosidired. In the sensitivity assessment, the model parametres and inputs were varied one at a time by a constant percentage according to the ?one at a time? (OAAT) method and the response of the outputs were calculated.

Aktiv bullerdämpning i ventilationssystem

Active headsets have been on the market for years and now it is time for something else to enter the stage. The technology of active noise reduction can for exmple also be used in ventilation systems for reducing ventilation noise. An active control system principally consists of four important components, namely the downstream error microphone, the upstream detection or reference microphone, the digital signal processor (DSP) and a loudspeaker. The upstream reference microphone listen to the primary ventilation noise and sends it to the DSP which makes a phase shift to the signal and sends it to the loudspeaker. The loudspeaker sends out the opposite waveform of the incoming one and reduce the primary ventilation noise.

Är MBSR en effektiv metod för att lindra stress hos friska människor?: evidensbaserad litteraturstudie

Mindfulness-Based Stress Reduction (MBSR) har framförts som en lämplig metod för lindring av stress hos friska, men stressade människor. Effekten av MBSR på stress hos personer utan psykiska eller fysiska sjukdomar undersöktes genom en litteraturgenomgång av artiklar som behandlar experimentella utvärderingar av MBSR. Resultaten visar att MBSR är en verksam behandlingsmetod, men också att de publicerade studierna har brister vilket motiverar fler utvärderingar med striktare kontrollmetodik..

Social musiksmak?: Social påverkan på musiksmak via anonyma räkneverk

The purpose with this paper is to examine whether other peoples opinions of a song and an artist influences an individuals own opinions of the song and artist. Through a quantitative study we seek to study whether such an influence exists and if it does, how strong that influence is. The study began with a pretest to examine whether differences existed when we manipulated our independent variable, how many times the song has been played at Myspace.com. Subsequently we performed a quantitative study by handing out surveys to students at Stockholm School of Economics on two different occasions. Our results show no significant differences in attitude or intentions when the amount of times the song has been played at Myspace.com is manipulated.

Aktiv bullerdämpning i ventilationssystem

Active headsets have been on the market for years and now it is time for something else to enter the stage. The technology of active noise reduction can for exmple also be used in ventilation systems for reducing ventilation noise. An active control system principally consists of four important components, namely the downstream error microphone, the upstream detection or reference microphone, the digital signal processor (DSP) and a loudspeaker. The upstream reference microphone listen to the primary ventilation noise and sends it to the DSP which makes a phase shift to the signal and sends it to the loudspeaker. The loudspeaker sends out the opposite waveform of the incoming one and reduce the primary ventilation noise.

Skattereduktion : Bör arbetskostnaden regleras i lag

The Income Tax Act is enacted what criteria must be met to obtain a tax reduction of household work. Household work is the common term for ROT- and RUT-works. The purpose of the tax reduction is to increase job opportunities and to discourage that undocumented work performs.It is only for the labor cost as tax reduction is given for. The concept of labor cost is defined in law as it is not comprised of cost of materials, equipment or travel. The preliminary work provides no closer explanation what the labor cost includes.

Utvärdering av den biologiska reningen av processavloppsvattnet vid GE Healthcare i Uppsala

GE Healthcare operates in Uppsala (Sweden) and develops systems, equipments and medium to purify medical substances. Discussions with the local authority concerning planed far-reaching changes and upgrades of the biological process techniques for sewage management, aroused the question about revising the terms of permit for the activity. Therefore it seemed necessary to evaluate a newly installed biological process technique, which is the background of this thesis. The evaluated biological treatment process was built in 2003 and consists of a biological reactor filled with moving bed carriers with a high surface area for biological growth. At the time of the project the biological wastewater treatment plant consisted of a flow equalization facility and two following parallel biological processes; a biological reactor with moving bed carriers and a tower trickling filter.The aim of this thesis was to survey the function of the biological reactor with respect to the reduction of organic matter.

Minimiaktiekapitalet i Sverige: En konsekvensstudie av ett slopande av aktiekapitalkravet

In 2007 the Swedish government appointed a commission of inquiry with the task to submit a proposal of reduction in the requirement of a minimum legal capital for private limited liability companies. The commission of inquiry?s main proposal involved a reduction to SEK 50,000 compared to the prevailing SEK 100,000. Following a complementary proposal from the Justice Department suggesting a reduction to SEK 1, this paper aims at providing an understanding of the function and purpose of a minimum legal capital and the consequences that follows from an abolition of the statutory capital requirement. The thesis concludes that the legal capital?s main purpose is that of a standard contract internalizing the shareholder?s risk in business.

Utveckling av 22 : -en motkolvs HCCI motor

Environment friendly transports are one of the main topics in the industry and society today.Shell organizes an annual university competition called Shell Eco Marathon. The goal is to buildthe car that consumes the least fuel during a race. KTH participated for the first time in 2006.The engine for this competition, DoubleTwo, has been developed within the school. Theprinciple is a two stroke counter piston HCCI engine with variable compression ratio. HCCIstands for homogenous charge compression ignition.

Energieffektivisering på Skutskärs Bruk : Varvtalsstyrning till utvalda pumpenheter på Blekeri 4

In modern society in terms of economics and environmental impact, it is important to ensure that a company is as energy efficient as possible to reduce the amount of energy used. About 10 TWh of electricity used annually to pump drives in Swedish industry. Therefore, pumping system has great potential for energy savings.The objective of this report was to determine how much energy and money that can be saved with the insertion of variable speed drive to six pumps on Bleach plant 4 in Skutskär Mill. The work was performed with electrical measurements during one week, analysis of pump curves and the compilation of production data over a year.The results show that four of these six pumps were profitable and yielded an annual saving of 1172 MWh of electricity and 560 000 SEK. With an economic lifetime of 10 years and a discount rate of 6.8% the final result for the entire life-cycle savings became 3 355 000 SEK.

Det redovisade resultatets värderelevans - före och efter IFRS

This thesis aims to investigate if there are any differences in the value relevance of yearly earnings announcements before (2000-2004) and after (2005-2009) IFRS were implemented for listed companies in the European Union. To assess the value relevance of earnings, an earnings response coefficient (ERC) is estimated using a linear OLS-regression model. The regression model uses accounting earnings per share as the explaining variable, with the corresponding return starting from (but not including) the previous year's earnings announcement date, ending at (and including) the current earnings announcement date, as the dependent variable. This study finds that there is no statistically significant difference between the estimated ERCs for the two periods. Although no statistically significant difference is found, data shows that the R2-values, which measure the explanatory power of the regressions, are higher for the period before IFRS.

Utveckling av en HBV/PULS-model med sammanfogade markfuktighets- och responsrutiner

Soil properties affect the chemical composition of soil water. When studying transport of chemical substances through a basin, it is therefore important to know from which soil layer the main part of the runoff is generated. The aim of this study is to develop an HBV/PULSE model with merged soil moisture and response routines, which generates good approximations of groundwater levels. It should be possible to extend the model to simulate transport of substances and take into account which soil layer the groundwater level is currently in. The hydrological version of HBV/PULSE is used since there is no need to account for pH or alcalinity at this stage.

Kostnadsbesparingar på EM7 : Omkonstruktioner för billigare tillverkning

This thesis describes how a cost reduction project was done on the Packsize ondemand packing machine EM7. The cost reduction was achieved by making minorredesigns of the EM7.The project began by studying the EM7´s structure and function by working on itsassembly line. A short literature study on the subject Design for Manufacturing wasalso done.By working on the assembly line and by speaking with staff from production anddevelopment departments, a number of ideas for reducing manufacturing costs arose.Estimations of the potential cost reduction size for each proposal were done incollaboration with vendors and the purchasing department. Based on the size of the cost reduction, technical risk, impact on the assembly lineand the development time the various proposals were ranked. The two highestranked proposals were selected for further development towards finished solutions.One of the ideas that were selected to develop in to a finished solution meant thatsome of the pneumatic valves were replaced with others.

Reduktion av föroreningar i processvatten från en äggfabrik i Brasilien : Kväve- och fosforrening i anlagda våtmarker.

A water treatment unit consisting of two aeration basins, two settling tanks, a residence basinand a horizontal subsurface flow wetland were used to treat wastewater from an eggprocessing factory in Brazil. The aim of this paper was to determine the efficiency of thesystem in reducing nitrogen, phosphorus, BOD5 and TSS (among other parameters) andgetting a further understanding on different kinds of constructed treatment wetlands as well astheir nitrogen and phosphorus removal processes. The wastewater from the factory consistedof process water from manufacturing and water used for cleaning, no stormwater or sewagewater entered the system. Tests were taken three times a month from October 2013 ?til April2014.

En studie av etiken bakom australiensisk missbrukarvård enligt harm reductionmetoder

Syfte: Syftet med vår uppsats är att belysa den etiska dimensionen av harm reductionanknuten missbrukarvård. Till vår hjälp har vi haft etiska teorier och sociologen Zygmunt Baumans begrepp. Frågeställningar: Vi har använt oss av två huvudfrågor som vi därunder bryter ner i konkreta frågor. 1 Hur ser de etiska resonemangen ut hos personal verksam inom harm reductionanknuten missbrukarvård?Vilken typ av etik använder de sig av? Har de centrala etiska principer, vilka? Hur ser de på etik och moral? Följer de etiskt formulerade regler? Hur ser de på prohibition? Hur ser de på drogbruk? Hur ser de på människan? Vad driver dem i deras arbete? Hur ser de på harm reductions påverkan på samhället?2 Hur kan man förstå harm reductionmetoders framväxt ur Baumans sociologiska perspektiv?Hur kan harm reductionmetoder kopplas till det senmoderna samhället? Hur kan harm reduction rättfärdigas etiskt utifrån ett sociologiskt perspektiv? Hur kan harm reductions förklarar sociologiskt? Vilka förutsättningar fanns för att harm reduction skulle kunna utvecklas? Hur kan Baumans begrepp förklara harm reductions ställning i det senmoderna samhället? Metod: Vi har använt oss av en kvalitativ metod med intervjuer som redskap.

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