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834 Uppsatser om Signal Strength - Sida 20 av 56

Effekten av frukostens glykemiska index på energiintag hos barn och ungdomar

Sahlgrenska Academyat University of GothenburgDepartment of Internal Medicine and Clinical NutritionTitle: The effect of the glycemic index of breakfasts in energy intake inchildren and adolescentsAuthor: Charlotte Olofsson, Cornelia Johansson and Maria NordbeckSupervisor: Fredrik BertzExaminer: Ingrid LarssonProgramme: Dietician study programme, 180/240 ECTSType of paper: Examination paper, 15 hpDate: May 16, 2013Background: The glycemic index (GI) and it´s effect on energy intake is a debated subject.Research has been done whether food with lower GI decreases hunger and lowers energyintake, which could be an effective tool to prevent overweight in children and adolescents.Breakfast eating is successful for maintaining a healthy weight and it´s therefore interesting tosee if the quality of the carbohydrates matters.Objective: To evaluate the scientific evidence regarding the effect of GI of breakfasts inchildren?s and adolescents energy intake.Search strategy: To find relevant articles, a systematic literature search was made in thedatabases PubMed, Scopus and Cochrane. Search terms that were used were: breakfast,breakfast quality, children, glycemic index, energy intake, obesity.Selection criteria: Randomized controlled trials and cohort trials, breakfast eatingindividuals, children and adolescents under 18 years old, reported glycemic index. Outcomemeasurements: Energy intake.Data collection and analysis: Six original articles met the inclusion criteria and werereviewed by the SBU audit template for randomized and controlled studies. There after onearticle was excluded because of very low quality of the study.

Överföring av digital video via FireWire

Transmission of digital signals is today more frequently used than transmission of analog signals. One reason for this is that a digital signal is less sensitive to noise than an analog, another reason is that almost all signals today are handled in a digital format. This thesis describes the development of a system that receives digital video signals through FireWire. The standard for FireWire, which is a high performance serial bus, is under development. Today the standard of the bus supports transmission of data with a speed of up to 400 Mbit/s.

Konstruktion av specialmaskin för orientering och positionering av nyckelämnen

The thesis in product development ? mechanical design includes 15 credits and was carried out during the spring of 2014 at Semcon in Eskilstuna. The task is to construct a special machine for positioning and orientation of a key blank found in six different shapes, the construction is a part of a larger machine for encoding the key blank where a pick- and-place device or robot pick up the key blank and deliver it further in the process. The entire construction is designed for ASSA OEM Gothenburg.In order to accomplish the project the first step was to analyze the existing solutions to similar problems on the market in a current situation analysis to create an understanding of the problem. This was followed by a flow analysis and a functional analysis to get a deeper understanding of the problem and structuring the machine's process flow and its features.

Intuition som ett redskap för sjuksköterskan i vården. En litteraturstudie.

The purposes of this literature review were to study how nurses use intuition in health care, how these experiences are described by nurses and if you as a nurse can learn how to use your intuition. We also want to make nurses attentive of and give them the courage to use their intuition. The study is addressed to both nurs-ing students and practicing nurses. The method is a literature review based on nine scientific articles. The results implicate that nurses use their intuition to know how to do something, when additional measures needs to be done and which measures they are.

Hållfasthetsegenskaper i gjutjärn : tensile properties of cast iron

In the last few years people have become more and more aware of how humanity is affecting the climate. In the direction of reducing the greenhouse gases is to design engines with higher tensile properties and reduced weight, in order to achieve lower fuel consumption and cleaner fuel incineration in today's truck engines.In order to achieve these requirements it?s necessary to increase the combustion pressure in the engine. This requires higher tensile properties and high thermal conductivity of the engine material. The department of Component Technology at the University of Jönköping in collaboration with Volvo Powertrain AB, Scania CV AB and DAROS Piston Rings AB has been commissioned to develop this material and to find knowledge of material properties used in truck engines and piston rings used for marine applications.The purpose with this work is to analyze the tensile properties of a series of cast iron, cast under different metallurgical conditions.Four different series of cast irons have been analyzed from four points of view, carbon concentration, nodularity, amount inoculation and cooling rate.After the tensile test all specimen data was analyzed in a mathematic calculation program called Matlab 2006a.

RATA ELLER TA TA? ? En jämförande studie av Teknisk analys på årsbasis.

Uppsatsen undersöker huruvida en teknisk analys kan generera en årlig överavkastning under åren 1992-2004. De tekniska indikatorerna vilka tillämpas i denna uppsats är; Glidande Medelvärde, Momentum samt Relative Strength Index. Tidigare studier har fokuserat på analyser av längre tidsperioder. Till skillnad från dessa görs i denna uppsats en nedbrytning av undersökningsperioden. Syftet är att slutsatser skall kunna dras om en överavkastning genererad genom teknisk analys kan överstiga den för en Buy&Hold strategi, för kortare tidsperioder..

Kommunikativ precision och transparens i samband med förvärv

Denna studie behandlar bolags informationssignaler före, i samband med och efter förvärv. Med utgångspunkt i agent- och signalteorin har informationssignaler som skickats identifierats, där en kvalitativ ansats med tillhörande diskurs- och etnografisk innehållsanalys har använts för att kartlägga informationssignalerande mekanismer samt generera en modell för analys av informationssignaler i samband med förvärv. Studien uppvisar resultat om varför informationssignaler sänds i samband med förvärv, där bolag generellt eftersträvar att minska informationsasymmetri gentemot sina intressenter, legitimera beslut samt nyttja informationsövertag för att skapa personliga fördelar. Studien bidrar till området för informationssignalering, där utfall av förvärv påverkar omfattningen och innehållet som informationssignaler uppvisar..

Kosmetikaföretagens jakt efter männen : en fallstudie av The Body Shop och Make Up Store

SummaryThe purpose of this thesis is to examine what effect the IFRS 2 has on earnings, equity, financial strength and return on equity for listed Swedish companies with active stock option plans. The purpose is further to investigate the companies? attitudes towards IFRS 2 and to find out if companies tend to deviate from stock option plans due to the changed accounting rules. We also want to examine the view of IFRS 2 from an auditor?s perspective.We have used a deductive approach and a mix of quantitative and qualitative research methods with a view to get a completely clear picture within the field of study.

Utveckling av reglersystem till quadrokopter

The purpose of this project was to further develop and complete a quadcopter that had been built in an earlier course at KTH, so that it could be used for demonstration and education at the school. The quadcopter was at the beginning of the project completed when it came to hardware, and there was some software functionality implemented but no system for automatic stabilization. The main goal of the project was to implement such a system, and to combine it with the previous functionality to make the quadcopter operable and able to fly. To create a functioning and stable ground multiple basic software features has been implemented, and on top of that additional software to improve the safety, stability and functionality. The most important part is the control system that is responsible for converting sensor and control signals to suitable motor values.

Kvalitetssäkring och processtyrningav ytstruktur på lackerat objekt

To be allowed to sell Z-suspended vehicles with dipped beam Xenon or LED lighting, Scania have to develop automatic headlight level control. This master?s thesis aims to be the foundation to that development.The thesis consists of several parts; a market analysis of how competitors to Scania and the general vehicle industry solve this problem; several available principles for detecting the amount of control needed; the construction of a test station for sensors, a control unit and components connected controlled by the control unit; a further theoretical and practical development of one principle ? one rotational sensor connected between the chassis and the back drive axis; a state flow model programmed in Simulink that produces the control signal for the headlight leveling from the sensor input.Lastly the thesis gives some recommendations to the further development and implementation of automatic headlight level control on Scania vehicles..

Aktiva ägares påverkan på svenska börsbolags lönsamhet

This thesis investigates the effects of active ownership on the return on assets (ROA) of Swedish listed companies during the years 2003 to 2013. Active ownership is operationalized based on the probabilistic voting model that is used to calculate the minimum amount of shares the largest shareholder needs in order to possess control of a contested vote at the shareholder meeting. We study the three largest lists on the Nasdaq OMX Stockholm, having 1454 observations from 207 companies to test our hypothesis. The main result from the study is that there's a significant positive relationship between active ownership and ROA during the investigated period. The active owners' relative strength also proves to have a significant positive relationship to ROA..

Undersökning av modulationsscheman för existerande bredbandsteknologier

In this thesis some different modulation schemes for xDSL-techniques are compared. The investigated techniques are ADSL, G.lite, ADSL2, HDSL, SHDSL and VDSL. The modulation methods used are DMT, CAP and different versions of PAM. Several broadband techniques also use Trellis Coded Modulation (TCM) to increase the coding gain of the transmission. For each one of the different modulation methods the signal-to-noise ratio is calculated for generating a bit error rate probability of 10-7.

Mätning av axiella magnetiska läckflöden i vattenkraftsgeneratorer

This thesis describes a method of measuring axial magnetic leakage flux in an operational hydropower generator. Axial magnetic leakage flux is the magnetic flux at the ends of a rotating generator, which goes through the stator parallel to the rotor axis. This flux can cause circulating currents in the stator iron, giving rise to losses, and can in the worst case overheat a generator, causing it to melt down. To measure the axial flux, and how it affects the generator temperature, a measurement system was constructed on behalf of Vattenfall. The system consists of search coil sensors and a signal-processing unit with amplifiers and active filtering.  To confirm the behaviour of the axial leakage flux and the functionality of the measurement system, a test installation was made.

Vilka är barnen i Trappans stödgrupper? : Kvantitativa studier utifrån SDQ (Strength and difficulties questions)

I den här uppsatsen undersöker jag hur barns mående och beteende bedöms i samband med deltagande i stödgrupp på Trappan i Uppsala. Jag studerar SDQ-formulär (Strength and difficulties questions) ifyllda av barn och/eller deras föräldrar 2009- 2011. SDQ mäter sex variabler: a) emotionella problem, b) uppförandeproblem, c) hyperaktivitet/uppmärksamhetsproblem, d) kamratproblem, e) prosocialt beteende samt f) total svårighetspoäng. Materialet utgörs av skattningar för 166 barn. En ny rapport (Skerfving 2011) om utvärdering av stödgrupper i Uppsala län blir ett viktigt jämförelsematerial, men jag gör delvis andra metodiska val än rapporten.

Optimering av informationsinsamlingvid prototyptillverkning

This report discusses a method to detect divers in harbour environments usingpassive acoustic detection. The goal was to achieve as high detection as possiblewithout having too high false alarm rate. A short execution time was also desirable.By using the characteristic of an inhalation a band-pass filter was applied to the signalto improve the signal to noise ratio. After the filtering an energy estimation of thesignal was made. This energy estimation was later used in a frequency analysis, whichcould tell us if there were enough energy in the frequencies that correspond to adivers breathing frequency.

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