Dr. Erol Kalkan, P.E.
QuakeLogic Inc.
I am a structural engineer and CEO of QUAKELOGIC. I earned my B.Sc. degree in Civil Engineering and M.Sc. degree in Engineering Seismology from the Middle East Technical University. My second M.Sc. degree in Structural Engineering is from the Bosporus (Bogazici) University in Turkey. My doctorate degree in Structural Engineering (major) and in Geotechnical Engineering (minor) is from the University of California, Davis. My postdoctoral studies were at the University of California, Berkeley. I authored and co-authored more than 120 peer-reviewed publications on various issues in structural engineering and engineering seismology. My research and publications are at www.quakelogic.net
Python, MATLAB, Fortran
Statistiques
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Feeds
A soumis
SPECTRAL WHITENING
This function applies whitening to a given signal within user defined frequency band.
plus de 3 ans il y a | 1197 téléchargements |
A soumis
Time-domain Sinc Interpolation (Resampling)
Time-domain SINC resampling (interpolation) function with a simple example
plus de 3 ans il y a | 2138 téléchargements |
A soumis
Complex Mode Indicator Function (CMIF)
This is a robust complex mode indicator function, which can be used to identify Eigen values. A simple example is provided.
environ 4 ans il y a | 623 téléchargements |
A soumis
Spectral acceleration, velocity and displacement spectra
This is a MatLAB function to compute linear-elastic damped response spectrum of time series
presque 7 ans il y a | 2481 téléchargements |
A soumis
Nonlinear multi-axial constant ductility spectra (H,V,tilt)
Robust function to generate multi-component constant-ductility nonlinear-inelastic response spectra.
presque 7 ans il y a | 303 téléchargements |
Finding the velocity from displacement
In regards to filtering the seismograms, I developed an automated algorithm: https://www.mathworks.com/matlabcentral/fileexchang...
environ 7 ans il y a | 0
A soumis
An automated P-phase Arrival Time Picker with SNR output
PPHASEPICKER is a powerful tool for automatically picking P-phase onsets.
plus de 7 ans il y a | 1644 téléchargements |
A soumis
spikeRemoval
This function replace or delete unwanted spikes (outliers) exceeding the threshold value using histogram method.
plus de 7 ans il y a | 759 téléchargements |
A soumis
smoothing function
smoothCurve offers various different window smoothing options.
plus de 7 ans il y a | 432 téléchargements |
A soumis
An Automated S-phase Arrival Time Picker with SNR Output
SPHASEPICKER is a powerful tool for automatically picking S-phase onsets.
plus de 7 ans il y a | 490 téléchargements |
A soumis
AUTODETECT BANDPASS FILTER CORNER FREQUENCIES
cornerFreqs automatically detects appropriate bandpass filter corner frequencies by comparing signal's spectrum with noise spect...
plus de 7 ans il y a | 616 téléchargements |
A soumis
Crop and save MatLAB figure as PDF (savePDF)
This simple function nicely crop the figure and save it as PDF
plus de 7 ans il y a | 531 téléchargements |
A soumis
inteFD
Computes integration of discrete time-signal in frequency domain
plus de 7 ans il y a | 1110 téléchargements |
A soumis
diffFD
Computes derivative of discrete time-signal in frequency domain
plus de 7 ans il y a | 543 téléchargements |
A soumis
COMPUTE SMOOTH FOURIER AMPLITUDE SPECTRUM (smoothFAS)
This function computes Fourier amplitude spectrum and its smoothed version. For smoothing, it uses window averaging.
plus de 7 ans il y a | 366 téléchargements |
A soumis
SMOOTHING FUNCTION FOR FOURIER AMPLITUDE SPECTRUM
smoothSpectra offers different smoothing options for Fourier amplitude spectrum. Default window function is Konno-Ohmachi.
plus de 7 ans il y a | 613 téléchargements |
A soumis
Piecewise Cubic Spline Interpolation (from NUMERICAL RECIPES in C)
Piecewise Cubic Spline Interpolation (from NUMERICAL RECIPES in C)
plus de 8 ans il y a | 270 téléchargements |
A soumis
xcorrFD(x,y)
xcorrFD takes two discrete time signals as input and calculates cross-correlation and delay
plus de 8 ans il y a | 612 téléchargements |
A soumis
Frequency Response Function of Accelerometer (Oscillator)
This code computes frequency response function (FRF) of an accelerometer (SDF Oscillator)
environ 9 ans il y a | 355 téléchargements |
A soumis
TIME-DOMAIN CROSS-CORRELATION FUNCTION
xcorrTD takes two discrete time signals as input and calculates cross-correlation and delay
environ 9 ans il y a | 896 téléchargements |
A soumis
NONLINEAR-INELASTIC RESPONSE HISTORY ANALYSIS OF A SDOF OSCILLATOR USING OPENSEES
Fast MatLAB function for nonlinear-inelastic time-history analysis of a SDOF oscillator.
environ 9 ans il y a | 890 téléchargements |
A soumis
Decimate (Downsample) A Signal in Frequency Domain
Frequency domain decimation function to reduce the sampling rate of a signal to a lower rate.
environ 9 ans il y a | 427 téléchargements |
A soumis
Epoch & Unix Timestamp Converter (epoch2UTC)
Converts an epoch/unix timestamp into a human readable date
plus de 9 ans il y a | 284 téléchargements |
A soumis
NONLINEAR-INELASTIC MULTI-AXIAL TIME RESPONSE ANALYSIS OF SDOF OSCILLATOR
Robust MatLAB function for nonlinear-inelastic time-history analysis of SDOF oscillator
plus de 9 ans il y a | 414 téléchargements |
A soumis
Graizer-Kalkan (2015) Ground-Motion Prediction Equation
Graizer-Kalkan (2015) Ground-Motion Prediction Equation for earthquake strong motion estimates.
plus de 9 ans il y a | 600 téléchargements |
A soumis
Deconvolution of two discrete time signals in frequency domain
Compute deconvolution of two discrete time signals in frequency domain to study wave propagation.
plus de 9 ans il y a | 10962 téléchargements |
A soumis
P-PHASE ARRIVAL TIME PICKER BASED ON AKAIKE INFORMATION CRITERION
Computes P-phase arrival time in windowed digital single-component seismic recording using AIC
presque 10 ans il y a | 568 téléchargements |
A soumis
Frequency-domain Zero-padding Resampling (Interpolation)
Frequency domain (FFT-based) resampling of discrete-time signal
presque 10 ans il y a | 654 téléchargements |
A soumis
Nonlinear-inelastic constant yield displacement response spectra
Compute nonlinear-inelastic constant yield displacement response spectra and input energy parameters
environ 10 ans il y a | 350 téléchargements |
A soumis
ASCE 41-06 Displacement Coefficient Method
Displacement coefficient method of ASCE 41-06 based on FEMA 440
environ 10 ans il y a | 234 téléchargements |
