Essays about: "parameter"

Showing result 1 - 5 of 1489 essays containing the word parameter.

  1. 1. ACCURACY OF THE WEATHER RESEARCH AND FORECASTING (WRF) MODEL IN WIND RESOURCE ASSESSMENT : CASE STUDY ABOUT A POTENTIAL REPOWERING SITE

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Piia Heikkinen; [2020]
    Keywords : WRF;

    Abstract : This Master’s thesis studies how accurate the Weather Research and Forecasting (WRF) model is in wind resource assessment in the Nordic conditions. Besides, it is studied how big of an increase in energy production could be gained if a confidential wind farm would be repowered. READ MORE

  2. 2. The effect of printing parameters on the deformation and microstructure of Inconel 718 : A study in pulsed laser and powder based directed energy deposition additive manufacturing

    University essay from KTH/Materialvetenskap

    Author : Elias Repper; [2020]
    Keywords : Laser; Additive Manufacturing; Metal; Deposition; Quasi-continuous-wave; Pulsed; Ni-base superalloy; Laves; Deformation; Residual stresses;

    Abstract : Additive manufacturing has the power to redefine how we create components. In order to minimize removal of printed material, deformation must be kept a minimum. When deposition rate is increased during directed energy deposition so is the power requirement for melting the feedstock. READ MORE

  3. 3. Modeling asymmetry in volatility response - non-Gaussian innovations approach

    University essay from Lunds universitet/Statistiska institutionen

    Author : Ludvig Göransson; [2020]
    Keywords : ARCH; GARCH; APARCH; Asymmetric GARCH; non-Gaussian innovations; Laplace distribution; Leverage effect; Stylized facts; Volatility process.; Mathematics and Statistics;

    Abstract : This thesis is an explorative note on the non-Gaussian innovations of the volatility process. More specifically, the thesis investigates if the decomposition of the Standard Classical Laplace (SCL) distribution to a difference of two exponential is a valid alternative to modelling the asymmetric volatility processes, taking volatility clustering, the leverage effect and asymmetric response in volatility into account. READ MORE

  4. 4. Evaluating the performance of a vibration energy harvester under complex excitation

    University essay from Mittuniversitetet/Institutionen för elektronikkonstruktion

    Author : Zhiqiang Chen; [2020]
    Keywords : Vibration energy harvesting; harvester; closed-loop control; resonant frequency; prediction;

    Abstract : In recent years, vibration energy harvesting has become a research hotspot in the field of energy harvesting. Energy harvester output power is the most important parameter in a vibration energy harvesting system. Assessing the harvester output power in different vibration environments is an important study issue to study. READ MORE

  5. 5. THE MEDIATING ROLE OF STUDENT’S ACADEMIC SELF-BELIEFS IN STUDYING EDUCATIONAL EQUITY A comparison between Sweden and Ukraine in TIMSS 2011

    University essay from Göteborgs universitet/Institutionen för pedagogik och specialpedagogik

    Author : Oleksandra Mittal; [2019-12-20]
    Keywords : Academic self-beliefs; Science self-concept; Interest and Utility; Socioeconomic status mediators; Structural Equation Modelling with multiple mediators; Educational Equity; Sweden; Ukraine; TIMSS 2011;

    Abstract : Aim: The aim of this study is to enrich the understanding of student-level mechanismsinvolved in shaping (in)equity in educational outcomes among eight-graders in Swedenand Ukraine by examining the role of academic self-beliefs in science, represented bymotivational constructs of self-concept, interest and utility value, as mediators of theassociation between student socioeconomic status (SES) and achievement in science.Theory: Expectancy-value theory (EVT) of achievement motivation (Eccles (Parsons) et al. READ MORE