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3283 Uppsatser om Granger causality test - Sida 20 av 219

Sidodominans hos svenska alpina skidgymnasister : en reliabilitetstest och enkätstudie

AimThe aim of this study was to develop and perform a reliability test of a questionnaire regarding side dominance in order to identify the dominant/non-dominant side in students at the Swedish alpine ski high school.MethodA questionnaire of side dominance of the upper and lower extremity was developed, and its reliability was tested according to the test-retest design. A total of 121 subjects answered the questionnaire twice. The questionnaire included five questions about side dominance, i.e. what hand/arm or foot/leg (left /right) that one prefers to use as a first choice when writing, throwing, kicking a ball, jumping over a fence and stair climbing. Furthermore, there was a question whether the responder has a safer/better ski turn to the left or to the right.

Konstruktion av styrelektronik till testfixtur

The focus of this thesis is primarily in electronic construction and describes the design process for a microcontroller circuit board from concept development to prototyping. The client develops test fixtures for automated testing of products within the electronics industry and needs a new controller circuit for the test fixtures that can handle controls and basic testing. An investigation into the needs of such a system is conducted and a prototype printed circuit board assembly is manufactured.The prototype is developed with focus on protection against electrostatic discharges and overvoltage. Among the functions that are included are voltage measurements, communication interfaces and control of input and output currents. Firmware for the prototype is developed and configured to communicate with a PC through USB interface for control and collecting of measurements..

Skapande av animationer för interaktiv spelmedia genom motion capture

In this thesis I will propose and test a pipeline for creating in-game animations using motion capture technology, with the aim to export to a 3D game engine, such as UDK or similar. Even though there are already established pipelines for creating in-game animations in the game industry, they are not of public knowledge and dissemination of information is hindered by the severe NDA (non-disclosure agreements) imposed on the studios and artists. I will therefore use my experience with game production and as a student, to research and propose an optimal pipeline for developing in-game animation that may be used by other students, researchers and independent game developers. The methodology used to test the pipeline will be a case study based on the student project Synergy, which I am developing with other third year students also attending the Game design Education at Gotland University..

Neurointensivvårdspatientens förutsättningar för ett optimalt neurologiskt wake-up test : en observationsstudie

Background: Examinations with the intent to assess neurological functions and level of conciousness are common in neurocritical care, but the effect on the patient is not entirely researched.Aim: The purpose of this study was to describe the patient?s situation at the neurological wake-up test concerning the environment, nursing interventions and the possibility given the patient to become awake, and if these conditions affect the outcome of the wake-up test.Methods: A quantitative observational study took place at a neurocritical care unit, where 20 patients were observed from interruption of sedation to the neurological assessment, which was performed by a neurosurgeon or a specialized critical care registered nurse. Nursing interventions, environmental factors and physiological parameters were documented.Result: Twelve intervention varieties to control patients? physiological parameters were used. CPP > 80 mmHg was found in 90 % of observations.

Analys av lageregenskaper utifrån mätningar i testrigg

Vertical hydropower units has a rotating mass of up to 1000 tons. For the generator and turbine to work well the rotating system is required to be centered in relation to the surrounding structure. This is achieved by means of radial bearings. The dynamic characteristics of these bearings have a strong impact on the overall rotational dynamics of the total system and thus influence the vibrations in the unit. At Vattenfall Research & Development in Älvkarleby ongoing research is taking place on how the bearing parameters should be represented in the rotor dynamic calculations.

Ett hållbart val för premiepensionen - En studie av miljö/etiskt märkta fonder i premiepensionssystemet

I uppsatsen undersöks hur 11 globala miljö och/eller etiskt märkta fonder har presterat i jämfö-relse med 17 konventionella fonder i det svenska premiepensionsutbudet genom tillämpning av utvalda finansiella prestationsmått. Detta med anledning av att miljö och/eller etiskt märkta fonder har haft en stor framväxt under det senaste decenniet och det finns därför en efterfrå-gan av att klargöra ifall en pensionssparare behöver göra avkall på den finansiella avkastningen vid val av miljö och/eller etiskt märkta fonder. En jämförelse av det statliga förvalsalternativet och 10 globala miljö och/eller etiskt märkta fonder har även gjorts för att undersöka skillnaden av att vara en aktiv respektive passiv premiepensionssparare då antalet som inte gör ett aktivt val är omkring 50 procent. Resultatet visar ingen statistisk signifikant skillnad med avseende på den riskjusterade avkastningen mellan fonder som är miljö och/eller etiskt märkta och fonder som inte tar hänsyn till dessa kriterier vilket överensstämmer med tidigare forskning. I jämfö-relsen mellan det statliga förvalsalternativet och 10 globala miljö och/eller etiskt märkta fonder har det förstnämnda presterat på en hög nivå..

Fodrets inverkan på resultatet vid undersökning av förekomst av ockult blod i avföringen hos hund :

Hemoplus® (Sarstedt, Nümbrecht, Tyskland) is a guaiac-based fecal occult blood test developed for human medicine. Guaiac-based tests make use of the pseudoperoxidase activity of hemoglobin so the test is not specific for human hemoglobin and can therefore be used in veterinary medicine. Peroxidase-containing foods such as meat (hemoglobin and myoglobin) can cause false-positive results of the test. To ensure that a positive result is not caused by diet, it has been suggested that canine patients should be fed a meatless diet for a few days prior to fecal occult blood testing. The aim of this study was to evaluate the effect of commercial dog food on guaiac-based tests. In this study fecal samples from healthy dogs were analyzed with Hemoplus®.

Humorstilar, Emotionell Perception och Kön ? Vem skrattar mest och vem skrattar sist?

The main aim of this research was to investigate four humour styles, affiliative, self-enhancing, aggressive, and self-defeating humour, and compare these with emotional perception. Forty-eight persons took part in the research, 27 women and 21 men living in the southern part of Sweden. Two humour tests were used: the Humour Scale Questionnaire ? HSQ, with 32 items, and a newly composed video test, assembled after pilot testing from 26 video clips, the Humour Video Questionnaire ? HVQ. To measure perception and interpretation of emotion, the revised version of the ?Reading the Mind in the Eyes? Test was used.

Minnen i marknadsföring: Nostalgia in advertising, communication effects, relationships and critical periods for establishing emotional bonds to collective events

Many perceive a boom in nostalgia and what is retro, especially within the marketing discipline. This thesis studies how nostalgia functions in the advertising context and aims to shed light on which effects there are from nostalgia evoking communication, what connections there are with other important factors as well as aspires to develop the understanding of the underlying psychological aspects and the emotional bonds to events (as nostalgia evoking stimuli in the thesis), which pave the ground for nostalgic emotions. Point of origin has been classical measures of communication effects and models of connections and causality and to these important factors have been added. Results show clear connections and correlations between nostalgia and positive communication effects, even with control for other factors that may interfere. However, the results show that some factors have moderating effects that should be important to take into consideration, namely how well the brand and the event in the ad are perceived to fit the advertising context.

Memories in Marketing: Nostalgia in advertising, communication effects, relationships and critical periods for establishing emotional bonds to collective events

Many perceive a boom in nostalgia and what is retro, especially within the marketing discipline. This thesis studies how nostalgia functions in the advertising context and aims to shed light on which effects there are from nostalgia evoking communication, what connections there are with other important factors as well as aspires to develop the understanding of the underlying psychological aspects and the emotional bonds to events (as nostalgia evoking stimuli in the thesis), which pave the ground for nostalgic emotions. Point of origin has been classical measures of communication effects and models of connections and causality and to these important factors have been added. Results show clear connections and correlations between nostalgia and positive communication effects, even with control for other factors that may interfere. However, the results show that some factors have moderating effects that should be important to take into consideration, namely how well the brand and the event in the ad are perceived to fit the advertising context.

Spill från rundbalspress med och utan knivar :

When harvesteing ley there is always mechanical losses from the harvest machines. During the last years the roundbalers with knives,cutting the material-are more common, This use increase the mechanical losses of material. MATERIALS AND METHODS The roundbaler which used in this test was a Krone Vario Pack 1500 Multi Cut. This roundbaler has 17 knives. The theoretical length of cut was 64 mm. During the test we stretched a rubber tarp under the balechamber and collected the materials which fell down from the balechamber.

Utredning av laserskärningens materialpåverkan inför drag- och slagprovning : Teknisk Fysik med Materialvetenskap

An investigation of the heat impact of laser cutting on the material properties when producing tensile and impact test specimens of different steel types of varying thickness has been performed. The purpose of the thesis project was to provide recommendations regarding how much material that needs to be milled from the laser cut edge before tensile and impact tests. The study has been performed partly by investigating the test specimens by heat camera when the specimens were cut in the laser cutting line and partly by performing hardness tests, investigation by microscopy, and tolerance and roughness measurements and tensile tests of the laser cut material and material produced in the traditional multi operation machine. The results show that the heat affected zone in the thicker materials is greater than previously thought of, and that the currently used recommendation has to be adjusted. The study clearly shows that the thicker the material, the greater the heat affected zone, independently of the steel type, since the thicker material takes longer time to cut.

Uppfyller BIM förväntningarna som arbetsmetod för broprojekt?

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.

Utvärdering och vidareutveckling av STAPL för användning inom inbäddad Boundary-Scan-baserad test

Antalet kretskort som monteras i multikortssystem, till exempel telekommunikationssystem, ökar ständigt. Samtidigt som ytmonteringstekniken och packningstekniken blir allt bättre utvecklas även tillverkningsmetoderna för olika integrerade komponenter, vilket medför att varje kretskort rymmer allt fler integrerade komponenter. Detta gör att testning av integrerade komponenter och multikortsystem blir alltmer komplex. En förutsättning för att kunna genomföra effektiv testning är standarder. Standarder över hur testning ska genomföras medför att en komponent som uppfyller kraven från en standard är direkt utbytbar mot en komponent från en annan tillverkare som uppfyller kraven från samma standard.

Intensiv läsundervisning : - en interventionsstudie

I interventionsstudien var vårt syfte att undersöka om det finns ett samband mellan intensiv läsundervisning och ordavkodningen hos elever som har en långsam och osäker läsning. Vi genomförde tre läsrelaterade tester på 29 elever i årskurs 2 för att kartlägga deras ordavkodningsförmåga. Utifrån resultaten gjorde vi ett urval av fyra elever som vi kallade försöksgrupp. Dessa fick en-till-en-undervisning i olika ordavkodningsstrategier under fyra veckor vid 16 tillfällen, varje gång i 25-30 minuter. Vår undervisningsmodell inriktade sig mot fonologisk, morfologisk, syntaktisk och semantisk lästräning.

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