Current Research Projects

 
Asok Sen

Professor Asok Sen received his PhD from Cornell University. He has held visiting positions at the California Institute of Technology, University of Toronto, Northwestern University and Cornell University. His research interests are in multiscale analysis and modeling using advanced signal processing and soft computing techniques, with biomedical, engineering and environmental applications.

Current Research Projects

  1. Analysis of Tremor Signals from Patients with Parkinson's Disease and Other Neurological Disorders

  2. Analysis of Seizure EEG of Epileptic Patients and Animal Seizure Models

  3. Modeling of Signal Transduction Processes in Muscle

  4. Analysis of Functional MRI Data of Hand Movement

  5. Dynamics of Pressure and Heat Release Fluctuations in Internal Combustion Engines

  6. Analysis of Solar Activity and Upper Atmospheric Processes

  7. Analysis of Climate Records from Glaciers, Lakes, Rivers, Oceans and Caves

Papers recently published, accepted or submitted

  1. Sen, A. K. (2007): Multifractality as a Measure of Complexity in Solar Flare Activity, Solar Physics, 241, 67-76.

  2. Swartz, D. R., Yang, Z., Sen, A. K., Tikunova, S., Davis, J. P. (2007): Myofibrillar Troponin Exists in Three States and There is Signal Transduction Along the Skeletal Myofibrillar Thin Filaments, Journal of Molecular Biology, 361, 420-435.

  3. Sen, A. K., Dostrovsky, J. (2007): Analysis of Local Field Potentials Recorded from the Subthalamic Nucleus of Patients with Parkinson's Disease: A Wavelet-Based Approach, Computational and Mathematical Methods in Medicine, 8(3) 165-171.

  4. Sen, A. K., Litak, G., Syta, A. (2007): Cutting Process Dynamics by Nonlinear Time Series and Wavelet Analysis, Chaos, 17, 023133 (1-8).

  5. Sen, A. K., Shannon, H. E., Kubek, M. J. (2007): Analysis of Seizure EEG in Kindled Epileptic Rats, Computational and Mathematical Methods in Medicine, 8(4), 225-234.

  6. Sen, A. K., Kane, A., Hutchison, W., Lozano, A., Hodaie, M., Dostrovsky, J. O. (2007): Intermittency in Local Field Potentials Recorded from Patients with Essential Tremor.  BMC Neuroscience 8 (Suppl. 2) 141.

  7. Sen, A. K., Litak, G., Taccani, R., Radu, R. (2008): Wavelet Analysis of Cycle-to-Cycle Pressure Variations in an Internal Combustion Engine, Chaos, Solitons & Fractals, 38, 886-893.

  8. Sen, A. K., Longwic, R., Litak, G., Gorski, K. (2008):  Analysis of Cycle-to-Cycle Pressure Oscillations in a Diesel Engine, Mechanical Systems and Signal Processing, 22, 362-373.

  9. Sen, A. K., Litak, G., Kaminski, T., Wendeker, M. (2008): Multifractal and Statistical Analysis of Heat Release Fluctuations in a Spark Ignition Engine, Chaos, 18, 033115 (1-6).

  10. Litak, G., Sen, A. K., Syta, A. (2009): Intermittent and Chaotic Vibrations in a Regenerative Cutting Process, Chaos, Solitons & Fractals, 41, 2115-2122.

  11. Sen, A. K., Litak, G. (2009): Dynamics of Pressure Fluctuations in Internal Combustion Engines, accepted for publication in: Traffic Related Air pollution and Internal Combustion Engines,  Nova Science Publishers, New York.

  12. Sen, A. K. (2009): Temporal Variations of Submillennial Periodicities in Endogenic Calcite from Lake Edward (Central Africa) During the Late Holocene, Mathematical Geosciences, 41, 43-49.

  13. Sen, A. K. (2009): Complexity Analysis of Riverflow Time Series, Stochastic Environmental Research and Risk Assessment, 23, 361-366.

  14. Sen, A. K., Filippelli, G. M., Flores, J. A. (2009): An Application of Wavelet Analysis to Paleoproductivity Records from the Southern Ocean, Computers and Geosciences, 35, 1445-1450.

  15. Sen, A. K. (2009): Spectral-Temporal Characterization of  Riverflow Variability in England and Wales for the period 1865-2002, Hydrological Processes, 23, 1147-1157.

  16. Muoz, A., Sen, A. K., Sancho, C., Genty, D. (2009): Wavelet Analysis of Late Holocene Stalagmite Records from Ortigosa Caves in Northern Spain, Journal of Cave and Karst Studies, 71, 63-72.

  17. Sawicki, J., Sen, A. K., Litak, G. (2010): Multiresolution Wavelet Analysis of the Dynamics of a Cracked Rotor, International Journal of Rotating Machinery, ID265198 (1-8).

  18. Sen, A. K. (2010): Even-Odd Cycle Parity in Complexity of Hemispheric Sunspot Activity, Advances in Space Research, 44, 1321-1325.

  19. Sen, A. K., Litak, G., Yao, B.F., Li, G. X.  (2010): Analysis of Pressure Fluctuations in a Natural Gas Engine Under Lean Burn Conditions, Applied Thermal Engineering, 30, 776-779.

  20. Sen, A. K., Litak, G., Finney, C. E. A., Daw, C. S., Wagner, R. M. (2010): Analysis of Heat Release Dynamics in an Internal Combustion Engine Using Multifractals and Wavelets, Applied Energy, 87, 1736-1743.

  21. Sen, A. K. (2010): Streamflow Variability in the Southern Appalachians and Atmospheric Teleconnections, River Research and Applications (accepted).

  22. Sen, A. K., Swartz, D. R., Gawalapu, R. K. (2010): A Kinetic Model for Troponin Dissociation in Relation to Thin Filament Regulation in Striated Muscle (submitted).

  23. Sen, A. K., Litak, G., Edwards, K. D., Finney, C. E. A., Daw, C. S., Wagner, R. M. (2010): Characteristics of Cyclic Heat Release Variability in the Transition from Spark Ignition to HCCI in a Gasoline Engine, Applied Energy (accepted).

  24. Sen, A. K., Zheng, J., Huang, Z. (2010): Dynamics of Cycle-to-Cycle Variations in a Natural Gas Direct-Injection Spark-Ignition Engine, Applied Energy (accepted).

  25. Sen, A. K., Wang, J., Huang, Z. (2010): Investigating the Dynamics of Cyclic Variability in a Spark-Ignition Engine fueled with Hydrogen-Enriched Natural Gas (submitted).

  26. Sen, A. K. (2011): Wavelet Analysis of Temperature and Precipitation Time Series Reconstructed from Tree Ring Data in Southern Colorado Plateau, USA (submitted).

  27. Sen, A. K., Ceviz, M. A., Oner, I. V. (2011): Wavelet Analysis of Cyclic Variability in a Spark-Ignition Engine Powered by Gasoline-Hydrogen Fuel Blends, Sixth International Green Energy Conference, Eskisehir, Turkey, June 5-9 (submitted).