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Dr. Erol Kalkan, P.E.


23 total contributions since 2016

I am a research structural engineer at the Earthquake Science Center of United States Geological Survey in Menlo Park, California.

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.erolkalkan.com

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Submitted


Piecewise Cubic Spline Interpolation (from NUMERICAL RECIPES in C)
Piecewise Cubic Spline Interpolation (from NUMERICAL RECIPES in C)

7 months ago | 2 downloads |

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An automated P-phase Arrival Time Picker with SNR output
PPHASEPICKER is a powerful tool for automatically picking P-phase onsets.

9 months ago | 13 downloads |

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Complex Mode Indicator Function (CMIF)
This is a robust complex mode indicator function. A clear example is provided.

9 months ago | 10 downloads |

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SPECTRAL WHITENING
This function applies whitening to a given signal within user defined frequency band.

10 months ago | 10 downloads |

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xcorrFD(x,y)
xcorrFD takes two discrete time signals as input and calculates cross-correlation and delay

11 months ago | 3 downloads |

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Frequency Response Function of Accelerometer (Oscillator)
This code computes frequency response function (FRF) of an accelerometer (SDF Oscillator)

1 year ago | 3 downloads |

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TIME-DOMAIN CROSS-CORRELATION FUNCTION
xcorrTD takes two discrete time signals as input and calculates cross-correlation and delay

1 year ago | 13 downloads |

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NONLINEAR-INELASTIC RESPONSE HISTORY ANALYSIS OF A SDOF OSCILLATOR USING OPENSEES
Fast MatLAB function for nonlinear-inelastic time-history analysis of a SDOF oscillator.

1 year ago | 7 downloads |

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Decimate (Downsample) A Signal in Frequency Domain
Frequency domain decimation function to reduce the sampling rate of a signal to a lower rate.

1 year ago | 4 downloads |

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Epoch & Unix Timestamp Converter (epoch2UTC)
Converts an epoch/unix timestamp into a human readable date

1 year ago | 3 downloads |

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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

1 year ago | 3 downloads |

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Nonlinear multi-axial constant ductility response spectra for horizontal, vertical and tilt motions
Robust function to generate multi-component constant-ductility nonlinear-inelastic response spectra.

1 year ago | 4 downloads |

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Pseudo spectral acceleration, velocity and displacement spectra
This is a MatLAB function to compute linear-elastic damped response spectrum of time series

1 year ago | 20 downloads |

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Graizer-Kalkan (2015) Ground-Motion Prediction Equation
Graizer-Kalkan (2015) Ground-Motion Prediction Equation for earthquake strong motion estimates.

1 year ago | 4 downloads |

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Deconvolution of two discrete time signals in frequency domain
Compute deconvolution of two discrete time signals in frequency domain to study wave propagation.

1 year ago | 22 downloads |

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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

2 years ago | 6 downloads |

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Time-domain Sinc Interpolation (Resampling)
Time-domain SINC resampling (interpolation) function with a simple example

2 years ago | 26 downloads |

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Frequency-domain Zero-padding Resampling (Interpolation)
Frequency domain (FFT-based) resampling of discrete-time signal

2 years ago | 6 downloads |

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Frequency-domain Differentiation of Discrete Time-Signal
Computes derivative of discrete time-signal in frequency domain

2 years ago | 1 download |

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Frequency-domain Integration of Discrete Time-Signal
Computes integration of discrete time-signal in frequency domain

2 years ago | 7 downloads |

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Nonlinear-inelastic constant yield displacement response spectra
Compute nonlinear-inelastic constant yield displacement response spectra and input energy parameters

2 years ago | 2 downloads |

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ASCE 41-06 Displacement Coefficient Method
Displacement coefficient method of ASCE 41-06 based on FEMA 440

2 years ago | 3 downloads |

Answered
Pre-determining the number of lines in a text file
Here is a short and fast way: Say file name to be read is apk.txt fid = fopen('apk.txt','r'); Nrows = numel(textread('a...

2 years ago | 0