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
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Feeds
Inviato
SPECTRAL WHITENING
This function applies whitening to a given signal within user defined frequency band.
oltre 3 anni fa | 1201 download |
Inviato
Time-domain Sinc Interpolation (Resampling)
Time-domain SINC resampling (interpolation) function with a simple example
oltre 3 anni fa | 2148 download |
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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.
circa 4 anni fa | 630 download |
Inviato
Spectral acceleration, velocity and displacement spectra
This is a MatLAB function to compute linear-elastic damped response spectrum of time series
quasi 7 anni fa | 2491 download |
Inviato
Nonlinear multi-axial constant ductility spectra (H,V,tilt)
Robust function to generate multi-component constant-ductility nonlinear-inelastic response spectra.
circa 7 anni fa | 304 download |
Finding the velocity from displacement
In regards to filtering the seismograms, I developed an automated algorithm: https://www.mathworks.com/matlabcentral/fileexchang...
circa 7 anni fa | 0
Inviato
An automated P-phase Arrival Time Picker with SNR output
PPHASEPICKER is a powerful tool for automatically picking P-phase onsets.
oltre 7 anni fa | 1650 download |
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spikeRemoval
This function replace or delete unwanted spikes (outliers) exceeding the threshold value using histogram method.
oltre 7 anni fa | 763 download |
Inviato
smoothing function
smoothCurve offers various different window smoothing options.
oltre 7 anni fa | 432 download |
Inviato
An Automated S-phase Arrival Time Picker with SNR Output
SPHASEPICKER is a powerful tool for automatically picking S-phase onsets.
oltre 7 anni fa | 492 download |
Inviato
AUTODETECT BANDPASS FILTER CORNER FREQUENCIES
cornerFreqs automatically detects appropriate bandpass filter corner frequencies by comparing signal's spectrum with noise spect...
oltre 7 anni fa | 620 download |
Inviato
Crop and save MatLAB figure as PDF (savePDF)
This simple function nicely crop the figure and save it as PDF
oltre 7 anni fa | 531 download |
Inviato
inteFD
Computes integration of discrete time-signal in frequency domain
oltre 7 anni fa | 1113 download |
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diffFD
Computes derivative of discrete time-signal in frequency domain
oltre 7 anni fa | 544 download |
Inviato
COMPUTE SMOOTH FOURIER AMPLITUDE SPECTRUM (smoothFAS)
This function computes Fourier amplitude spectrum and its smoothed version. For smoothing, it uses window averaging.
oltre 7 anni fa | 368 download |
Inviato
SMOOTHING FUNCTION FOR FOURIER AMPLITUDE SPECTRUM
smoothSpectra offers different smoothing options for Fourier amplitude spectrum. Default window function is Konno-Ohmachi.
oltre 7 anni fa | 615 download |
Inviato
Piecewise Cubic Spline Interpolation (from NUMERICAL RECIPES in C)
Piecewise Cubic Spline Interpolation (from NUMERICAL RECIPES in C)
oltre 8 anni fa | 271 download |
Inviato
xcorrFD(x,y)
xcorrFD takes two discrete time signals as input and calculates cross-correlation and delay
quasi 9 anni fa | 614 download |
Inviato
Frequency Response Function of Accelerometer (Oscillator)
This code computes frequency response function (FRF) of an accelerometer (SDF Oscillator)
oltre 9 anni fa | 355 download |
Inviato
TIME-DOMAIN CROSS-CORRELATION FUNCTION
xcorrTD takes two discrete time signals as input and calculates cross-correlation and delay
oltre 9 anni fa | 896 download |
Inviato
NONLINEAR-INELASTIC RESPONSE HISTORY ANALYSIS OF A SDOF OSCILLATOR USING OPENSEES
Fast MatLAB function for nonlinear-inelastic time-history analysis of a SDOF oscillator.
oltre 9 anni fa | 891 download |
Inviato
Decimate (Downsample) A Signal in Frequency Domain
Frequency domain decimation function to reduce the sampling rate of a signal to a lower rate.
oltre 9 anni fa | 429 download |
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Epoch & Unix Timestamp Converter (epoch2UTC)
Converts an epoch/unix timestamp into a human readable date
oltre 9 anni fa | 285 download |
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NONLINEAR-INELASTIC MULTI-AXIAL TIME RESPONSE ANALYSIS OF SDOF OSCILLATOR
Robust MatLAB function for nonlinear-inelastic time-history analysis of SDOF oscillator
oltre 9 anni fa | 414 download |
Inviato
Graizer-Kalkan (2015) Ground-Motion Prediction Equation
Graizer-Kalkan (2015) Ground-Motion Prediction Equation for earthquake strong motion estimates.
oltre 9 anni fa | 602 download |
Inviato
Deconvolution of two discrete time signals in frequency domain
Compute deconvolution of two discrete time signals in frequency domain to study wave propagation.
oltre 9 anni fa | 10963 download |
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P-PHASE ARRIVAL TIME PICKER BASED ON AKAIKE INFORMATION CRITERION
Computes P-phase arrival time in windowed digital single-component seismic recording using AIC
circa 10 anni fa | 569 download |
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Frequency-domain Zero-padding Resampling (Interpolation)
Frequency domain (FFT-based) resampling of discrete-time signal
circa 10 anni fa | 655 download |
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Nonlinear-inelastic constant yield displacement response spectra
Compute nonlinear-inelastic constant yield displacement response spectra and input energy parameters
circa 10 anni fa | 350 download |
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ASCE 41-06 Displacement Coefficient Method
Displacement coefficient method of ASCE 41-06 based on FEMA 440
oltre 10 anni fa | 234 download |
