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3808 Uppsatser om Shear bond strength test - Sida 31 av 254
Bilder av Trotskij
My aim in this case study has been to create a method for creature design to test this method in a production and evaluate the results. To achieve this I studied and analyzed the methods of three concept artists and illustrators named James Gurney, Neville Page and Iain McCaig. From the analysis of these artist´s methods, combined with my own personal experience, a new method was formed. To test this method a creature was designed based on directives given by a game design group in the process of creating a table top role playing game in a fictitious world. These directives where given for the creature´s role and its living conditions.
Elevers självvärdering, psykosomatik och attityd till taktil massage : En interventionsstudie i årskurs sju
Bakgrund: I Sverige finns det en könsskillnad som visar att flickor mår sämre och har en mer negativ självvärdering jämfört med pojkar. Självbilden är en stark bidragande orsak till barns psykiska hälsa och det finns ett samband mellan barns självbild och attityd till beröring. Metod: Tre enkäter: Jag Tycker Jag Är (JTJÄ), Ben Sira psychological distress (Bspd) och egenformulerade frågor om taktil massage (TM) samlades in bland 93 elever i årskurs sju från en mindre inlandsstad i södra Sverige. Svaren analyserades med oberoende t-test och Pearsons korrelationstest i SPSS 2.0.0. Resultat: Resultatet av ett oberoendet-test visade att det fanns en tendens till könsskillnad i en aspekt avsjälvvärdering (JTJÄ).
Att förlora sitt vuxna barn : En kvalitativ studie om hur fem mammor upplever och hanterar sina vuxna barns död
The purpose of this study was to examine how five mothers experience and cope with theloss of their adult children and also how this loss affect the mothers. We chose a qualitativemethod using semistructured interviews. We used Lazarus and Folkman?s coping theoryand Folkman?s revised coping theory in our analysis. The results showed that the mothers?experiences were very individual.
Reliable or not reliable, that is the question : En reliabilitetsstudie på fem tester utformade för ambulanssjukvårdare
SammanfattningSyfte och frågeställningarSyftet med uppsatsen var att undersöka genom ett test-retest, reliabiliteten hos fem stycken specifika fys- och styrketester för de muskelgrupper, som är mest utsatta i en ambulanssjukvårdares arbete.- Är det en god reliabilitet i ett bellybacktest utan motstånd?- Är det en god reliabilitet i ett balanstest?- Är det en god reliabilitet i ett handstyrketest?- Är det en god reliabilitet i ett aerobiskt steptest?- Är det en god reliabilitet i ett marklyft i dragmaskin?MetodEtt test och retest utfördes på fem tester, bellybacktest utan motstånd, handstyrketest, aerobiskt steptest, marklyft i drargmaskin och balanstest. Försökspersonerna var 14 stycken, 11 män och 3 kvinnor, samtliga var studenter vid GIH i Stockholm.ResultatVarken bellybacktestet utan motstånd, handstyrketestet (höger samt vänster hand), aerobiska steptestet eller marklyftet i dragmaskinen visar några slumpmässiga eller systematiska statistisk signifikanta skillnader. Balanstestet däremot har bra värden på t-testet (p=0,89), som visar att det inte finns några systematiska signifikanta skillnader, men låga värden på övriga uträkningar som visar på de slumpmässiga skillnaderna.SlutsatsSamtliga tester med undantag från balanstestet har hög reliabilitet. Balanstestet visar mindre tillförlitlighet än de övriga fyra testerna, vilket även tidigare forskning visar.
Optimering av sintrade kugghjul
Powder Metal (PM) gears are machine element components which operate under the same principle as conventional gears, but, due to their intrinsic material characteristic need to be designed slightly different, and its manufacturing process offers advantages previously unobtainable by conventional steel gear manufacturing methods. The use of PM in similar applications, such as synchronous hubs, makes them a suitable candidate for production in such material. The current master thesis work focuses on gear design using PM by utilizing finite element method (FEM) to reduce weight and inertia taking into account root bending strength and tooth deflection.First a topological optimization is used to determine feasible candidates for different web designs which have as objective to reduce volume, similar topologies were shown during different loading conditions; and hence, this topology was chosen as a suitable candidate. A shape optimization of the topological candidate was performed having as state variables root bending strength, independent for compressive and tensile side of the tooth loading; and tooth deflection, which in concept can be correlated to static transmission error (TE).Another aspect in this thesis analysed is the possibility to incorporate non-trochoid root geometry, a trochoid root is always present when machining with a hob, into the gear root and hence reduce the stress concentration here. Due to the use of PM, a non-symmetric optimized root can be achieved and hence be optimizing compression and tension.Results showed significantly lower inertia, for example certain results showed 40% reduced when compared to solid gear, with adverse effects as increase in tooth deformation and increase in maximum principal stress.
Operarepetitören och operadirigenten : om en arbetsrelation i musikteatervärlden
Det här är en studie i om bilder i dataspel kan förändra uppfattningen om antalet ljudsekvenser som spelas upp. Faktorerna som har ändrats i varje test är förhållandena mellan antalet ljudsekvenser och antalet bildobjekt som presenteras. Flera olika ljud skapades till undersökningen, som skiljde sig i karaktär i syfte av att ge mer nyanserade resultat. 20 personer gjorde test där de fick lyssna på ljud med och utan koppling till bilder. De blev sedan tillfrågade hur många ljudkällor de kunde höra.
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..
Hur integreras fosterhemsplacerade barn i fosterhem?
The purpose of this study is to better understand, from a foster parent perspective, how the integration process of the foster child is carried out in the foster family. The purpose is to identify the challenges and success factors in the process. The study is based on a qualitative method. The data consist of interviews with six foster families. The study?s theoretical framework is mostly based on system theory and also on the theory of ambivalence.The results show that most of our families considered five factors to be important in order to facilitate the integration process.
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.
Uttagsbeskattning av en kooperativ förenings försäljning av el till självkostnadspris
The thesis has as purpose to describe and analyse a decision made be the Swedish tax committee in which it was decided that a cooperative economical associations selling price, which was less than the comparable public bonds market price, would be the focus of a withdrawal tax. There are exceptions from a withdrawal tax, that is if the transaction has a business motivation. However the concept, business motivation, is narrowly interpreted both in the preparatory works and in case law, which makes it irrelevant to the situation at hand. A cooperative economical association is a form of association nearest akin to the limited companies. These types of associations have as purpose to increase their owners wealth with the benefit of freedom from personal responsibility.
Stamskador i gallringsbestånd
This study was conducted on a property with a thinning machine team. The purpose was to investigate in which machine, the harvester or the forwarder, that caused most damage to the trees in six different stands. Different factors, related to the damage frequency in the stands, were checked out. For example: basal area per hectare, thinning strength, tree diameter and the rate of production.
The harvester drivers were also interviewed about how, when and why stem damages occur and how to minimize them.
The study stated that 4.3 percent of the trees were damaged. Out of these 88 percent was caused by the harvester and the rest, 12 percent, by the forwarder..
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..