Essays about: "measurement"

Showing result 1 - 5 of 2879 essays containing the word measurement.

  1. 1. Development of measurement algorithm in an industrial PLC : An evaluation of DSOGI-PLL for real time measurements

    University essay from Uppsala universitet/Institutionen för teknikvetenskaper

    Author : Caroline Moberg; [2019]
    Keywords : Phase locked loop; DSOGI-PLL; Symmetrical component extraction; Measurement algorithm;

    Abstract : The aim of this project was to devise an algorithm for three phase AC power grid measurements that could be utilized in an excitation system for controlling generators. This application requires fast and accurate measurements even when the voltages in the power grid are characterized by unbalanced three-phase, frequency variations and harmonic distortions. READ MORE

  2. 2. The Effect of Language Proficiency on Immigrants' Labour Earnings

    University essay from Handelshögskolan i Stockholm/Institutionen för nationalekonomi

    Author : Andreas Andersson; Henrik Hällerfors; [2019]
    Keywords : Earnings; Immigration; Refugee; Language; Human Capital;

    Abstract : This study examines the returns to language proficiency for immigrants in Germany. It uses self-reported language proficiency as a proxy for the objective skill level. Estimating the effect is complex and it is likely to be biased due to several factors, such as unobserved heterogeneity, measurement errors, and reverse causality. READ MORE

  3. 3. Improving Short-Range Cloud Forecasts in Harmonie-Arome Through Cloud Initialization Using Mesan Cloud Data

    University essay from Uppsala universitet/Luft-, vatten och landskapslära

    Author : Joakim Pyykkö; [2019]
    Keywords : cloud initialization; HARMONIE-AROME; MESAN; satellite product; synoptic weather station;

    Abstract : Previous studies, such as van der Veen (2012) and White et al. (2017), have demonstrated the potential of using measurement-based cloud data to improve Numerical Weather Prediction (NWP) based cloud forecasts. This can be done through cloud initialization; a process of injecting cloud data after the regular data assimilation in an NWP model. READ MORE

  4. 4. Illiquidity and Stock Returns: Evidence from the 2007-2016 Period on the Stockholm Stock Exchange

    University essay from Handelshögskolan i Stockholm/Institutionen för finansiell ekonomi

    Author : Andrea Risberg; Maximilian Linder; [2019]
    Keywords : Illiquidity; Bid-Ask Spread; Asset Pricing; Stockholm Stock Exchange;

    Abstract : In this thesis, we study whether stock specific liquidity help explain stock return variations on the Stockholm Stock Exchange in Sweden over the years 2007-2016 by regressing excess stock return on liquidity, market excess returns, size and value variables. Furthermore, we investigate whether illiquidity premia have differed during the global financial crisis of 2007-2008, compared to four following two-year periods. READ MORE

  5. 5. SuperAcoustics - Development of Android application to measure sound reduction index

    University essay from Lunds universitet/Teknisk akustik; Lunds universitet/Institutionen för byggvetenskaper

    Author : Karl Bengtsson; Elliot Sandefeldt; [2019]
    Keywords : Sound reduction index; Android; Application; Acoustic measurements; Sound insulation; Technology and Engineering;

    Abstract : Urban bosättning är vanligt i dagens samhälle och en övervägande andel av befolkningen bor i lägenheter, där ljudisolering är en viktig aspekt rörande trivseln i bostaden. Användning av smartmobiler för akustiska mätningar blir allt vanligare, men inget enkelt verktyg finns idag för att mäta och räkna ut reduktionstalet. READ MORE