Essays about: "nonlinear dynamics analysis"

Showing result 11 - 15 of 21 essays containing the words nonlinear dynamics analysis.

  1. 11. Developing a web-based system to visualize vegetation trends by a nonlinear regression algorithm

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Author : Yufei Wei; [2016]
    Keywords : PolyTrend; nonlinear regression algorithm; vegetation trends; Physical Geography and Ecosystem Analysis; NDVI; Web Development; Django; MATLAB; Python; Earth and Environmental Sciences;

    Abstract : Comparing with traditional linear regression methods that used to monitor vegetation trends, a nonlinear regression algorithm (PolyTrend) developed by Jamali et al. (2014) can provide more accurate information of vegetation trends by fitting a polynomial line with a degree of up to three for ASCII-formed time-series NDVI (Normalized Difference Vegetation Index) dataset of a single pixel. READ MORE

  3. 12. Nonlinearity In Exchange Rates : Evidence From African Economies

    University essay from Uppsala universitet/Statistiska institutionen

    Author : Ndey Isatou Jobe; [2016]
    Keywords : Nominal Exchange Rates; Linear Models; Random Walk Model; Smooth Transition Autoregressive Model; Linearity Tests; Unit Root Tests; Forecast Evaluation.;

    Abstract : In an effort to assess the predictive ability of exchange rate models when data on African countries is sampled, this paper studies nonlinear modelling and prediction of the nominal exchange rate series of the United States dollar to currencies of thirty-eight African states using the smooth transition autoregressive (STAR) model. A three step analysis is undertaken. READ MORE

  4. 13. A Matlab Toolbox for fMRI Data Analysis: Detection, Estimation and Brain Connectivity

    University essay from Datorseende

    Author : Kiran Kumar Budde; [2012]
    Keywords : fMRI; functional Magnetic Resonance Imaging; Detection of activated regions; Estimation of hemodynamic response; Brain connectivity; Bayesian estimator; RBF; NARX; Granger causality.;

    Abstract : Functional Magnetic Resonance Imaging (fMRI) is one of the best techniques for neuroimaging and has revolutionized the way to understand the brain functions. It measures the changes in the blood oxygen level-dependent (BOLD) signal which is related to the neuronal activity. READ MORE

  5. 14. Analyses of Metabolic Dynamics in Saccharomyces cerevisiae

    University essay from KTH/Optimeringslära och systemteori

    Author : Alexander Axelsson; Maria Bånkestad; Viktor Kull; Jesper Welander; [2012]
    Keywords : ;

    Abstract : This thesis conducts a study on the stability of steady states in the glycolysis of in silico models of Saccharomyces cerevisiae. Such un- controlled models could reach unstable steady states that are unlikely to occur in vivo. Little work has previously been done to examine stability of such models. READ MORE

  6. 15. Equivalent Dynamics Model of Ballasted Track Bed

    University essay from Blekinge Tekniska Högskola/Sektionen för ingenjörsvetenskap

    Author : Said Daoud; Xie Guowei; Liu Xiaoming; [2012]
    Keywords : ABAQUS; Ballast; modeling; simulation; train-track; fracture mechanics;

    Abstract : Increase of track maintenance costs and change of track geometry are due to the vibration of ballasted railway. The aim of this thesis work is to model train-track system as a multiply degree of freedom systems by Lump Parameter Method. READ MORE