Dr. Erol Kalkan, P.E.

QuakeLogic Inc.

Last seen: 2 months 前 | 自 2016 起处于活动状态

Followers: 3 Following: 0

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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

Programming Languages:
Python, MATLAB, Fortran

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

1 year 前 | 6 次下载 |

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

1 year 前 | 15 次下载 |

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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.

2 years 前 | 4 次下载 |

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

5 years 前 | 27 次下载 |

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Nonlinear multi-axial constant ductility spectra (H,V,tilt)
Robust function to generate multi-component constant-ductility nonlinear-inelastic response spectra.

5 years 前 | 1 次下载 |

已回答
Finding the velocity from displacement
In regards to filtering the seismograms, I developed an automated algorithm: https://www.mathworks.com/matlabcentral/fileexchang...

5 years 前 | 0

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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.

5 years 前 | 8 次下载 |

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spikeRemoval
This function replace or delete unwanted spikes (outliers) exceeding the threshold value using histogram method.

5 years 前 | 8 次下载 |

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smoothing function
smoothCurve offers various different window smoothing options.

5 years 前 | 2 次下载 |

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An Automated S-phase Arrival Time Picker with SNR Output
SPHASEPICKER is a powerful tool for automatically picking S-phase onsets.

5 years 前 | 5 次下载 |

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AUTODETECT BANDPASS FILTER CORNER FREQUENCIES
cornerFreqs automatically detects appropriate bandpass filter corner frequencies by comparing signal's spectrum with noise spect...

5 years 前 | 4 次下载 |

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Crop and save MatLAB figure as PDF (savePDF)
This simple function nicely crop the figure and save it as PDF

5 years 前 | 1 次下载 |

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inteFD
Computes integration of discrete time-signal in frequency domain

6 years 前 | 3 次下载 |

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diffFD
Computes derivative of discrete time-signal in frequency domain

6 years 前 | 2 次下载 |

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COMPUTE SMOOTH FOURIER AMPLITUDE SPECTRUM (smoothFAS)
This function computes Fourier amplitude spectrum and its smoothed version. For smoothing, it uses window averaging.

6 years 前 | 4 次下载 |

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SMOOTHING FUNCTION FOR FOURIER AMPLITUDE SPECTRUM
smoothSpectra offers different smoothing options for Fourier amplitude spectrum. Default window function is Konno-Ohmachi.

6 years 前 | 2 次下载 |

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

6 years 前 | 1 次下载 |

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

7 years 前 | 7 次下载 |

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

7 years 前 | 2 次下载 |

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

7 years 前 | 5 次下载 |

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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.

7 years 前 | 5 次下载 |

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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.

7 years 前 | 6 次下载 |

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

7 years 前 | 2 次下载 |

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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

7 years 前 | 3 次下载 |

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

7 years 前 | 5 次下载 |

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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.

8 years 前 | 1 次下载 |

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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

8 years 前 | 5 次下载 |

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

8 years 前 | 2 次下载 |

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

8 years 前 | 2 次下载 |

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

8 years 前 | 3 次下载 |

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Dr. Erol Kalkan, P.E.

QuakeLogic Inc.

统计学

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