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6967 Uppsatser om Provningsmetoder - Test-methods - Sida 52 av 465
Redesign av gallervält för Svea Redskap AB : Examensarbete, produktutveckling
The environmental debate is more intensive than ever before and the demands on companies increase. There are a number of methods to make it easier for the companies to fulfil the demands. Life Cycle Assessment (LCA) end ecodesign are some of the methods that can be used. Syntronic AB has the possibility to reduce the products´ environmental impact in the design phase. Therefore it is important for the company to make it possible to visualize the negative environmental impacts a product can cause in an easy way. It is also important to visualize for there clients if any improvement is possible. The purpose of this thesis is to develop a simplified model.
Webbpublicering av elevaktiviteter : en deskriptiv studie av gymnasieelevernas upplevelser
The aim of the present study is to describe the experiences of high school students as regards the effects of their activities, in and out of lessons, being published on the web. In addition, a further purpose is to acquire knowledge about whether a website could be used as means of increasing the students level of attention, and focus, to their activities in school; and, furthermore, how such a website should be designed to correspond with the students requests.The implemented methods are interviews with students, school administrators and teachers. A survey was conducted covering the student?s personal experiences and opinions. Furthermore, an interface test of the website was performed.
Normering av Communication Attitude Test for Preschool and Kindergarten Children Who Stutter (KiddyCAT) för svenska barn 3?6 år
The main purpose of the study was to collect norm data forCommunication Attitude Test for Preschool and Kindergarten Children WhoStutter (KiddyCAT) for Swedish children. Sub purposes of the study were toexamine if the results on KiddyCAT vary depending on age and gender andexamine the reliability and validity for the Swedish version of KiddyCAT. Inthe study 119 children without known stuttering, 3:1?6:11 years, fromdifferent preschools in Gothenburg city participated. Neither significantcorrelation between results on KiddyCAT and age nor a significantdifference between the genders was found.
Analytikers beaktande av goodwill: En fallstudie av tio analytikers förhållningssätt till goodwill
Abstract: Since the recession caught the market in fall 2008, multiple companies have suffered due to their former aggressive investment behavior. Huge goodwill piles have been collected ready to be doomed by the market. The aim of the study is to investigate equity analysts? consideration of goodwill in a recession market. An empirical study is conducted, based on interviews with ten Swedish equity analysts that follow companies with relevant goodwill status.
Grundvattenpåverkan kring järnvägstunnlar i berg
Rock groundwater has always caused major problems when tunnelling. Water leaking into tunnels can cause large problems, not only on the construction itself but also on the environment. A continuous water leakage can lead to a declining water supply, and geotechnical problems can occur as subsidence in the ground. Therefore it is of great importance to predict the consequences that can appear in the surroundings due to a declining groundwater surface.The aim of the study was to investigate different methods for predicting leakage and changes in groundwater level due to tunnelling excavations in rock. This thesis was performed by comparing mathematical methods, actual groundwater changes and results from preliminary investigations.Investigations were made for three railway tunnels planned by Botniabanan AB.
Experimentell jämförelse av Cassandra, MongoDB och MySQL
Context. Performance and resource usage is often an important factor for
database driven services. Depending on the purpose of the application, choosing
the wrong type of database may require
unnecessary hardware upgrades or replacements.
Objectives. This study investigates the differences in performance and resource
usage between
different SQL- and NoSQL-databases. The study is a comparison that focuses on
how the databases
perform in different applications.
Konstruktion av anordning för att undersöka förslitning av syrebärarpartiklar för kemcyklisk förbränning
The purpose of this work is to design and construct a device able to measure the mechanical attrition of oxygen carrier particles. Those particles are used in chemical looping combustion and in the present situation there is a lack of knowledge in how the attrition process work and in which extension. To find already tested solutions trying to answering this problem a literature study wascarried out and the best solution found was the so called Grace-Davison Jet-Cup method. This method is supposed to emulate the attrition caused by a cyclone separator and its advantages are that it is possible to use small test amounts, 5-10 g, and a thirty minutes long test will be enough to acquire useable results. An device was designed based on the Jet-Cup method with some slight modifications.
Hur korrelerar GIH:s Pyramidtest med VO2max på rullband för elitorienterare?
Syfte och frågeställningarSyftet med studien var att undersöka för elitorienterare resultaten vid och korrelationen mellan ett så kallat 5 minuters pyramidtest (5MPT) och ett maximalt test för bestämning av maximalt syreupptag (VO2max) på rullband. Frågorna vi ställde oss var: Vilken korrelation föreligger mellan 5MPT och ett bestämt VO2max på rullband hos elitorienterare? Hur ser en jämförelse ut mellan uppmätt samt beräknat VO2max? Vilken är reliabiliteten för 5MPT? Hur ser ekvationen ut för att beskriva sambandet mellan dessa två olika maxtester?MetodI valideringsstudien deltog 16 elitorienterare (6 kvinnor och 10 män) i åldrarna 17 till 37 år. De två testerna som genomfördes var 5MPT och bestämning av VO2max på rullband. 5MPT är ett skytteltest som är fem minuter långt, där testpersonen (tp) tar sig fram och tillbaka mellan två stolpar (sträcka 5.5 m) där en vertikal trappa (formad likt en pyramid) passeras under varje vända.
Bestämning av jordmodul för kringfyllnadsmaterial runt rörbroar
Voltage sag indices are a way of quantifying the performance of the power supply, as far as voltage sags are concerned. Indices can be defined for individual events, for individual sites, and for a whole system. A standard method for single-event methods is part of IEC standard 61000-4-30.This thesis emphasizes the importance of voltage sag indices and different methods for calculating three-phase voltage sag characteristics. Three-phase events measured in a medium network voltage over period of one month were analyzed, results examined and statistically evaluated. An algorithm for calculating voltage sag characteristics and indices was created in Matlab.
The relationship between CDS spreads and bond spreads ? an empirical comparison
Syfte: Syftet är att undersöka sambandet mellan CDS spreaden och bond spreaden, samt att jämföra dessa över tid. Detta genomförs genom att testa för ett kointegrationssamband samt Granger-kausalitet mellan CDS spreaden och bond spreaden för varje enhet som ingår i urvalet, och för olika perioder. Också deskriptiv statistik används. Metod: Kvantitativ metod: Augmented Dickey-Fuller test, KPSS, Engle-Granger test, Johansen-test, Granger kausalitet Teoretiska perspektiv: Prissättningsmodeller för kreditrisk. Arbitragesamband.
Beräkningar med GPU vs CPU : En jämförelsestudie av beräkningseffektivitet med avseende på energi- och tidsförbrukning
Examensarbetet handlar om en jämförelsestudie av beräkningseffektivitet med avseende på energi- och tidsförbrukning mellan grafikkort och processorer i persondatorer och PlayStation 3.Problemet studeras för att göra allmänheten uppmärksam på att det går att lösa en del av energiproblematiken med beräkningar genom att öka energieffektiviteten av beräkningsenheterna.Undersökningen har genomförts på ett explorativt sätt och studerar förhållandet mellan processorer, grafikkort och vilken som presterar bäst i vilket sammanhang. Prestandatest genomförs med molekylberäkningsprogrammet F@H och med filkomprimeringsprogrammet WinRAR. Testerna utförs på MultiCore- och SingleCorePCs och PS3s av olika karaktär. I vissa test mäts effektförbrukning för att kunna räkna ut hur energieffektiva vissa system är.Resultatet visar tydligt hur den genomsnittliga effektförbrukningen och energieffektiviteten för olika testsystem skiljer sig vid belastning, viloläge och olika typer beräkningar..
Behandling av myofasciella triggerpunkter med ?dry needling? hos personer med impingement i axelleden : En prospektiv randomiserad interventionsstudie
AbstractAim: The aim of this study was to investigate if treatment with ?dry needling? in myofascial triggerpoints (MTrPs) in the rotatorcuff muscles may affect impingement symptoms such as pain during provocative tests, shoulder mobility, and function. The research questions were: Does the value of pain change on the Visual Analog Pain Scale (VAS) between before and after treatment? Do the positive provocative tests for impingement change between before and after treatment? Does the active shoulder mobility change between before and after treatment? Does the self-rated function change between before and after treatment?Method: The study was a prospective randomized intervention study and 19 persons with impingement symptoms (mean ± standard deviation; 58 ± 18 years, and shoulder pain duration 3.9 ± 1.6 months) were randomized into two groups. The groups were tested before, directly after and 3 weeks after treatment.
Rengöring på restauranger : Kontroll och utvärdering av olika rengöringsmetoder på restauranger i Södra Roslagen.
Control and comparison of various cleaning methods on restaurants in Södra RoslagenThe purpose of this report is to find out and analyze the efficiency of cleaning methods in restaurant kitchens. The investigation was carried out through unannounced inspections at 89 restaurants in Södra Roslagen (municipality of Danderyd, Täby and Vaxholm). ATP-measuring was done on a plate, a knife, a bench surface and a cutting board. The ATP-method measured the amount of food residue on equipment and working surfaces after cleaning, with a luminometer and swabs. Restaurant staffs were asked to describe in detail how and when the last cleaning was carried out on the surface.
Value creation form a gender perspective - a case study of Caran
Women ledaers and profitability, is there a correlation? Earlier research show different outcome on the correlation between women leaders and profitability. A Swedish consultant firm, Caran has a belief that more women leaders would create more financial profit, we ask us if that is the true situation. Using two different IC measurement methods we have shown the difficulties in calculate intagible resources, which methods that can/ can not be used and if women leders create financial value. We found the women leaders in Caran to add more value per dollar spent on the woman leaders than the value added per dollar spent on men leaders.
Lika deltagande eller kompensation : En intervjustudie av hur högstadielärare förhåller sig till elever med dyslexi i undervisning och betygssättning
This essay aims to examine how Swedish compulsory school teachers claims to handle dyslexia while educating and grading, and to what extent they are influenced by others while grading. This was examined through interviews with a phenomenographic approach and the participants were eight grade 9 teachers. The categories of description found in the analysis was then interpreted through researcher Claes Nilhoms dilemma perspective, focusing on the dilemma Equal Participation - Compensation. Regarding education, three main strategies occurred: actions directed towards all students, methods of compensation organized by the school and individualized methods of compensation. The former is closest to Equal Participation, the latter to Compensation and the school organized methods form a middle position somewhat closer to Compensation.