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2220 Uppsatser om NASA task load index - Sida 49 av 148
Elektriskt system för detektion vid ballistiskt prov
The purpose of this thesis was to design an electrical system for use in a ballistic test at the Swedish National laboratory of forensic science (SKL). The detector unit would use four main parts: coilsystem, transmitter, reciever and indicator. The coilsystem would be based on a balanced system using three coils. One that creates a magneticfield and the other two will sense the differences when a metallobject is in the coilsystem. This report starts out by investigating possible solutions for this specific task followed by a description of the physics that the metaldetector use.
Rostfritt stål som ett alternativt material till koppar i tappvattenledningar för bostäder
Today?s wind power plants are only compensated for their reactive power consumption at no-load. As the wind power plants grow bigger the amount of reactive power they need also increases. This is no longer a problem that can be ignored, especially as the net owners are beginning to charge the reactive power they transport.In this thesis a couple of different methods of compensation and their prices will be discussed and evaluated. Problems, such as self-excitation, that can occur if one fully compensates the wind power plant will also be brought to surface.
Sambandet mellan förändringar i fonders portföljsammansättning och prestation : Effekten av ett nytt aktivitetsmått
Tidigare forskning är inte enig om aktivt förvaltade fonder presterar bättre eller sämre än index. Då hänsyn inte tas till olika nivåer av aktivitet tycks de flesta studier visa att aktiv förvaltning är en förlustaffär för fondsparare. Vi introducerar ett nytt mått på aktivitet, aktivitetsgrad, som utgår från de åtgärder förvaltaren vidtar. Aktivitetsgraden definieras av mängden och storleken på förändringar i portföljsammansättningen som sker under ett kvartal. Vi undersöker aktivitetsgraden hos 22 svenska småbolagsfonder mellan 2008 och 2013 och finner att de flesta fonder har en låg aktivitetsgrad.
Mediadatabas med webbgränssnitt för hembygdsförening
Throughout the years the Swedish local history societies have collected a large quantity of material, consisting of photos, documents and items, among others. As the society has become more computerized, the need has increased for these collections to become digitalized. This is a way to make their media more easily accessible to the general public, but also to easily be able to archive and preserve for example photos and videos electronically.This thesis concerns itself with the work we have done for the local history society of Nyed in Molkom. The task set before us consisted of creating both a website for the society, and a reliable database from witch the website draws its information. This project allows anyone with administrator privileges to upload new files and any additional information.
Tillståndsprövning - för lantbruk med djurhållning : en intervju undersökning med länsstyrelserna i Kalmar- och Hallands län.
The task of making a correct application for B- activities is the foundry time consuming
task. Information and facts concerning your entire business activity shall be attached into
a description of environmental consequences, which will be the basis for the decision
making whether the activities shall be granted a permission to practise environmentally
hazardous actions or not.
When the Environmental Act were established 1999, the permission process became
more extensor. With this study I want to give an insight about how these applications are
made. The methods I have used to collect information are a study literature where the
Environmental Act has been the focus, and qualitative interviews with two County
Administrative Board. I used the Environmental Act to understand why permission is
needed and the interviews to give me insight in how the work is done.
My conclusion is that it is very unusual that an application is granted without
complements.
Självscanningssystemet : Dess för- och nackdelar
The purpose with our thesis is to understand and explain the advantages and disadvantages there is with the self scanning system. The advantages and disadvantages we will highlight from three different angels; the store management perspective, the staff perspective and the customer perspective. These three perspectives will together form an overall perspective over the advantages and disadvantages as the self scanning system has contributed with. Finally we will highlight the differences and resemblances we have found between the perspectives.Through a qualitative approach we have gathered data to our thesis. Furthermore we have based our theory chapter and our empirical chapter on the base of Grounded Theory.
Kall potatis i forskningens namn: Konstruktion av ett kompendium som stöder utveckling av processkunskap inom biologiundervisningen i gymnasieskolan
Inom ramen för examensarbetet konstruerades ett kompendium som ska förmedla
kunskap om den vetenskapliga processen genom integration av autentiska experiment i
skolan. Materialet ska hjälpa eleverna att konstruera sina egna experiment och samtidigt
bli medvetna om ?tänkandet bakom görandet?. Kompendiet riktar sig till elever i
gymnasieskolans biologiundervisning, och kan med fördel användas inom kursen
biologi breddning. Den experimentella metoden som används är blodsockermätningar
med eleven själv som mätsystem.
Implied Dividends and Equity Returns
This paper studies the option market?s implied dividend as a predictor of future equity market returns. We introduce this variable in the simple total return framework and discuss some complications of using it as a proxy for the expected dividend. We construct some regressions using the price-dividend ratio and the implied dividend growth, and test them on six years worth of data on the EURO STOXX 50-index. The main result is that implied dividend growth exhibits some forecastability over two-year horizons, but that the dataset is too short to draw any definitive conclusions about long-horizon forecastability.
Standardisering av snöröjningsplan : Instruktioner, råd och tips för snöröjning av tak med stora spännvidder
The Swedish winters 2009/10 and 2010/11 were rich in snow and many roofs collapsed, mainly largespan frames. Investigations were made and the amount of snow was not the primary cause, insteadthere were several other causes. One of these was that in some cases roofs were shoveled in anunfavorable manner which affected the load patterns negatively, so causing the roofs to collapse.Most people lack the knowledge of how shoveling will affect the roof. Had there been an increasedunderstanding regarding shoveling, some roofs could have been prevented from collapsing.Through both qualitative and quantitative research in the form of interviews and calculations thetheoretically best ways to shovel a selection of roof types is presented in the report. The roofstructures covered are 3-compartment, continuous and Gerberspliced metal roof decks.
Registrering av faktisk närvaro i förskolan - vem berörs?
Every municipality in Sweden is responsible for offering its citizens adequate childcare. Parents hand in a preliminary schedule to the preschool for when their child needs to be in childcare, and based on this the preschool staff is scheduled. Some municipalities measure the actual time a child is in childcare. The essay idea comes from when I heard that one municipality was thinking of register the children's actual time in preschools. I started thinking on how to solve such a task.
Skadeanalys och omkonstruktion av HMS Belos A-ram
In order to rescue a distressed submarine crew, the Swedish Navy is able to use a deep submergence rescue vehicle, DSRV. This mini submarine ascends, docks to the downed submarine and picks up the whole crew. The submarine rescue ship HMS Belos has a special crane located in the aft of the ship to lift the surfaced DSRV aboard, which then docks on to the on board pressure chambers located below deck. During inspections the aforementioned crane has shown to have problems with cracks in the structure, most of them located in the bolted joint between the top part of the crane and the two leg parts. A simulation of the forces acting on the structure in heavy sea condition was conducted; these values were then used as input values in a Finite Element Method, FEM, analysis of the joint.
"Alla människor har en fasad och man vet aldrig vad som döljer sig där bakom" En undersökning om hur det går att påverka elevers attityd till lyrik genom undervisning
The study is ethnographic and the collected material consists of questionnaires, interviews andconducted practical exercises. The purpose of this study is to examine whether it is possible tochange boys attitude to poetry and poetry teaching through practical exercises. The questionswhich the study is based on concerns how frameworks for tasks can enhance the creativity ofthe students, the standards students have as a reference point and what attitudes boys have topoetry. The study shows that students feel that they are more creative if there is a frameworkfor the task, it has also been shown that boys do not have any special attitude to poetry,because they do not know what the word means. One of the most important results in theresults section is that boys have a positive attitude to poetry as long as the teacher gives themthe right tools to work with..
Öppna och slutna frågor i en jämförande studie : En studie i hur arbete med öppna/slutna frågor påverkar elevers förmåga till perspektivbyte i tid och rum.
Vi har i vår forskning belyst hur elever upplever arbetet med öppna respektive slutna frågor. Vi har framförallt tittat på hur arbetet med öppna och slutna frågor haft för inverkan på elevers möjligheter till perspektivbyte i tid och rum. Öppna frågor har i vår forskning varit lika med hög frihetsgrad medan slutna frågor är lika med låg eller ingen frihetsgrad. Vi har i vår forskning jämfört resultatet av en essäuppgift från två grupper med elever från årskurs 6. Dessa två grupper har innan uppgiften vägletts i temat ?En resa till Kina? i var sin experimentlektion.
En kvantitativ studie avseende kriminalvårdares empati
Empati har länge ansetts vara en god egenskap hos en medmänniska. Det definierats enligt Davis, som individers affektiva och fysiologiska reaktioner avseende någon annans fysiska och psykiska tillstånd. Tidigare forskning har visat att det finns skillnader avseende empati hos individer beroende på olika faktorer. Huvudsyftet med studien var att se om kön, ålder, arbetsplats, antal år inom yrket samt föräldraskap påverkade kriminalvårdares empati. Deltagarna var kriminalvårdare (N = 90) som arbetade på en anstalt och ett häkte.
Implementation av iterativ rastreringsmetod för färgbilder
This report describes the procedure in which we accomplished our task, which was to implement a present algorithm. This was made using C++. The algorithm is developed by Sasan Gooran, who is our examiner in this project. The algorithm uses an iterative method to produce the halftoned images. The reason for this project is to speed up the existing program which is made in Matlab.