Essays about: "ARCH 1"

Showing result 1 - 5 of 34 essays containing the words ARCH 1.

1. 1. Finite Element Macro-modeling of a Historical Masonry Building : Influence of Isotropic vs Anisotropic Plastic Material Model Assumption in Static Analysis

   University essay from KTH/Bro- och stålbyggnad

   Author : Madeleine Olsson; Maja Gustavsson; [2023]
   Keywords : ;

   Abstract : In this study, a macro-modeling strategy is implemented in a bearing wall with arch openings in an existing historical masonry building. This is to investigate what differences and similarities can be observed from the assumption of an orthotropic versus an isotropic constitutive material model. READ MORE

3. 2. CFD Analyses for Wind Load AssessmentCFD Analyses for Wind Load Assessment : Wind-induced vibrations in the Bomarsunds Bridge hangers

   University essay from KTH/Bro- och stålbyggnad

   Author : Fatiha El Azrak; [2023]
   Keywords : ;

   Abstract : The trend in recent years of building longer and slender bridge components has introduced new challenges to ensure their stability and strength. This master thesis focuses on the effects of wind-induced vibrations in the context of long, slender arch bridge components, particularly the recently constructed Bomarsunds Bridge in Åland, Finland. READ MORE

4. 3. Symmetry or Asymmetry: A model comparison between different ARCH-class volatility models using Bitcoin returns

   University essay from Lunds universitet/Nationalekonomiska institutionen

   Author : Hannes Wiklund; [2022]
   Keywords : GARCH; Model Confidence Set; Bitcoin; Volatility Forecasting; Business and Economics;

   Abstract : This thesis will in turn evaluate the forecast performance of different ARCH-type models' forecast ability using Bitcoin returns from 01-04-2015 to 01-04-2022. More specifically, it is of interest to see if a simple GARCH(1,1) model can outperform more sophisticated models that incorporate the asymmetry in volatility. READ MORE

5. 4. Optimization of support in rock pillars between two parallel tunnels

   University essay from KTH/Jord- och bergmekanik

   Author : Alexander Kote; Sohaib Ishaq; [2022]
   Keywords : tunnel; rock pillar support; rock pillar stability; rock mass; stresses; arching effect; Nyckelord: tunnel; bergförstärkning; bergpelare; bergmassa; spänningar; valveffekt;

   Abstract : When two parallel tunnels are excavated under high to moderate horizontal in-situ stresses combined with minor deformations in the pillar between the tunnels, the in-situ stresses can be redistributed over the tunnels in form of two compressive arches and are transferred from the roof to the abutments of the two tunnels. At additional deformations in the pillar, a new redistribution of the stresses can occur creating one compressive arch over both of the tunnels. READ MORE

6. 5. Statistical modelling of Bitcoin volatility : Has the sanctions on Russia had any effect on Bitcoin?

   University essay from Stockholms universitet/Statistiska institutionen

   Author : Mathilda Schönbeck; Fatima Salman; [2022]
   Keywords : Bitcoin; forecasting; volatility; logarithmic return; ARCH; GARCH; ARIMA model; dynamic regression;

   Abstract : This thesis aims to fit and compare different time series models namely the ARIMA-model, conditional heteroscedastic models and lastly a dynamic regression model with ARIMA error to Bitcoin closing price data that spans over 5 consecutive years. The purpose is to evaluate if the sanction on Russia had any effect on the cryptocurrency Bitcoin. READ MORE