Machine Learning and Instrument Autonomy Group

     Dr. Lukas Mandrake is a senior researcher and group supervisor of the Machine Learning (ML) and Instrument Autonomy group at JPL since 2002. His group brings ML techniques to bear against a wide range of applied problems in space, science, technology, and medicine. Our products have empowered flight missions (MSL Curiosity rover, MER Opportunity/Spirit rovers, EO-1, OCO-2/3…), advanced the state of the art for commercial customers like Kaiser, Statoil, and Chevron, were infused into numerous university settings, and addressed governmental agency needs (USDA, DOE, and DOD). Specifically, Mandrake specializes on scoping a question to make it answerable given available data, followed by creating ML-based solutions that are explainable and scientifically defensible (e.g. no “black box”).

     Lukas is also an ML liaison to the Information and Data Science program office at JPL, bringing a “trench-view” perspective on data science to the highest levels of strategy. He is passionate about bringing Data Science and especially ML to the JPL science community as well as the Ops and On-board autonomy systems. Oftentimes, these low-hanging fruits remain untouched due to cultural and perception differences between siloed areas of specialization; Lukas has been functioning as a liaison to ease the technological transfer of ML into these high-impact areas with significant success and over twenty major publications in applied ML application.

     While working on the Orbiting Carbon Observatory (OCO-2) mission, he invented a unique system for estimating the uncertainty of observations called the Data Ordering Genetic Optimization (DOGO). DOGO went on to place 2nd for the prestigious, NASA-wide Software of the Year award. Mandrake is also an enthusiastic and award-winning speaker & educator, bringing the promise of ML to new fields and applications as well as science education in general. He passionately works to educate children in science literacy and critical thinking, and has hosted hundreds of school children on interactive tours of JPL.

     Prior to his work at JPL and during his educational training, Mandrake built models of rental income vs. apartment amenities for real estate, coded and wrote dialog for several major computer games, and constructed a unique plasma simulator for auroral investigations.

     Mandrake entered college at the age of thirteen and spent his “high school” years exploring college topics in mathematics, chemistry, and physics. He received a bachelor’s degree (BSE) in Engineering Physics from the University of Arizona in 1995. He went on to receive a Masters in Theoretical Plasma Physics and a PhD in Computational Plasma Physics from the University of California, Los Angeles in 2002. While there, he also implemented and oversaw new, computerized physics labs for undergraduates, receiving several outstanding teaching awards.

    

Contact

Email: lukas.mandrake@jpl.nasa.gov
Office: 158-205

Mail Stop: 158-242
4800 Oak Grove Drive
Pasadena, CA 91109

Education

Physics (PhD) - University of California Los Angeles
Physics (MS) - University of California Los Angeles
Engineering Physics (BS) - University of Arizona

Research Interests

Interpretable Machine Learning
Genetic Algorithms
Data-Driven Science
Data Quality Estimation
Compute-constrained Machine Learning

Publications

Paper Icon Kiri Wagstaff, Steven Lu, Emily Dunkel, Kevin Grimes, Brandon Zhao, Jesse Cai, Shoshanna B. Cole, Gary Doran, Raymond Francis, Jake Lee, and Lukas Mandrake. Mars Image Content Classification: Three Years of NASA Deployment and Recent Advances. Proceedings of the Thirty-Third Annual Conference on Innovative Applications of Artificial Intelligence, 2021. (Link to PDF) (CL#20-6521) IAAI Deployed Application Award

Peyman Tavallali, Steve Chien, Lukas Mandrake, Yuliya Marchetti, Hui Su, Longtao Wu, Benjamin Smith, Andrew Branch, James Mason, and Jason Swope. Adaptive, Model-driven Observation for Earth Science. 101st American Meteorological Society Annual Meeting, 2021.

Paper Icon Michael J. Munje, Ingrid J. Daubar, Gary Doran, Kiri Wagstaff, and Lukas Mandrake. Large-Scale Automated Detection of Fresh Impacts on Mars Using Machine Learning with CTX Observations. 11th Planetary Crater Consortium, Abstract #2065, 2020. (Link to PDF) (CL#20-2315)

Paper Icon Gary Doran, Steven Lu, Maria Liukis, Lukas Mandrake, Umaa Rebbapragada, Kiri L. Wagstaff, Jimmie Young, Erik Langert, Anneliese Braunegg, Paul Horton, Daniel Jeong, and Asher Trockman. COSMIC: Content-based Onboard Summarization to Monitor Infrequent Change. Proceedings of the IEEE Aerospace Conference, 2020. (Link to publisher's site) (CL#19-8223)

Paper Icon Steven Lu, Kiri L. Wagstaff, Jesse Cai, Gary Doran, Kevin Grimes, Jake Lee, Lukas Mandrake, and Yisong Yue. Improved Content-Based Image Classifiers for the PDS Image Atlas. Fourth Planetary Data Workshop, Abstract #7028, 2019. (Link to PDF) (CL#19-1913)

Paper Icon Lukas Mandrake. DOGO: What Data Do I Use? An Alternative to Quality Flags. Autonomy Operations Seminar, Div 39, 2017. (Link to pptx) (CL#17-0846)

Paper Icon Lukas Mandrake. Machine Learning & Autonomy: Extending Humanity to New Heights. NSTA DRD, 2017. (Link to pptx) (CL#17-0845)

Paper Icon Debra Wunch, Paul Wennberg, Gregory Osterman, Brendan Fisher, Naylor Bret, Coleen Roehl, Christopher O'Dell, Lukas Mandrake, Camille Viatte, David Griffith, Nicolar Michael Deutscher, Voltaire A. Velazco, Justuc Notholt, Thorsten Warneke, Christof Petri, Martine de Maziere, Mahesh Sha, Ralf Sussmann, Markus Rettinger, David Polld, John Robinson, Isamu Morino, Osamu Uchino, Frank Hase, Thomas Blumenstock, Mattaeus Kiel, Dietrich Feist, Sabrina G. Arnold, Kimberly Strong, Joseph Mendonca, Rigel Kivi, Pauli Heikkinen, Laura Iraci, James Podolske, Patrick W. Hillyard, Shuji Kawakami, Manvendra Dubey, Harrison A. Parker, Eliezer Sepulveda Hernandez, Omaira Garcia Rodriguez, Yao Te, Pascal Jeseck, Michael Gunson, David Crisp, Annmarie Eldering. Comparisons of the Orbitting Carbon Observatory-2 (OCO-2) XCO2 measurements with TCCON. Atmospheric Measurement Techniques Discussions, 2016. (Link to publisher's site) (CL#16-4308)

Paper Icon Raymond Francis, Tara A Estlin, Kiri L Wagstaff, Gary Doran, Lukas Mandrake. Instrument Autonomy Techniques Enhance Science Return and Efficiency of Surface Missions. 3rd International Workshop on Instrumentation for Planetary Missions, 2016. (Link to publisher's site) (CL#16-4304)

Paper Icon Kiri L Wagstaff, Alphan Altinok, Brian Bue, Steve A Chien, Lukas Mandrake. Instrument Science Autonomy for Orbital and Flyby Planetary Missions. 3rd International Workshop on Instrumentation for Planetary Missions, 2016. (Link to publisher's site) (CL#16-4303)

Paper Icon Lukas Mandrake. Data Ordering Genetic Optimization (DOGO) System. NASA Tech Briefs, 2016. (Link to PDF) (CL#15-2376)

Paper Icon Robert R. Nelson, Christopher W. O'Dell, Thomas E Taylor, Lukas Mandrake, and Mike Smith. The Potential of Clear-Sky Carbon Dioxide Satellite Retrievals. Atmospheric Measurement Techniques, 2016. (Link to PDF) (CL#15-5656)

Paper Icon Lukas Mandrake. DOGO: Bringing Order to Chaos. NASA Software of the Year submission for JPL. (Link to PPTX) (CL#15-5454)

Paper Icon Kiri L. Wagstaff, Gary B. Doran, Ravi Kiran, Lukas Mandrake, Norbert Schorghofer, and Alice Stanboli. Landmark Classification and Content-Based Search for Mars Orbital Imagery. Second Planetary Data Workshop, 2015. (Link to PDF) (CL#15-1429)

Paper Icon Lukas Mandrake, Gary Doran. Warn Levels: Ordering Data for Custom Filtration. International Greenhouse Gas Measurement Workshop (IWGGMS) proceedings, June 2015, Caltech. (Link to PDF) (CL#15-2371)

Paper Icon Lukas Mandrake, Gary Doran. DOGO Warn Levels: You've Got Them, Let's Use Them. OCO-2 Science Team Meeting, November 2015, Caltech. (Link to PDF) (CL#15-5001)

Paper Icon Lukas Mandrake. An Empirical Metric of Individual Datapoint Utility Given Ample Metadata as Applied to the OCO-2 Flight System. NASA Tech Briefs, 2015. (Link to PDF) (CL#14-3458)

Paper Icon Kiri L. Wagstaff, Ravi Kiran, Lukas Mandrake, Norbert Schorghofer, Alexander Smith, Ben Bornstein. Big Data Tools Come to Mars: Content-Based Analysis of Mars Orbital Imagery. 8th International Conference on Mars, 2014. (Download PDF) (CL#14-2730)

Paper Icon H. Nguyen, G. Osterman, D. Wunch, C. O'Dell, L. Mandrake, P. Wennberg, B. Fisher, R. Castano. A method for colocating satellite XCO2 data to ground-based data and its application to ACOS-GOSAT and TCCON. Atmospheric Measurement Techniques, February 2014, 7, 1495-1533, 2014. (Link to publisher's page) ()

Paper Icon Lukas Mandrake and Kiri L Wagstaff and Umaa D Rebbapragada. Detecting an Extreme Minority Class in Hyperspectral Data Using Machine Learning. NASA Tech Briefs, 2014. (Link to PDF) (CL#14-2373)

Paper Icon Seungwon Lee and Lukas Mandrake and Benjamin J. Bornstein and Brian D. Bue. Quantification of Trace Chemicals Using the Vehicle Cabin Atmosphere Monitor. NASA Tech Briefs, 2014. (Link to PDF) (CL#14-2375)

Paper Icon Lukas Mandrake. Informing Climate Retrieval Development Using Data Mining -or- How to Help Scientists Draw Better Lines. Interface 2013 at Chapman University, April 2013. (Link to PPTX) CL#13-1530

Paper Icon Lukas Mandrake and David R. Thompson. Advanced Multimission Operations System (ATMO). NASA Tech Briefs. (Link to PDF) (CL#13-2375)

Paper Icon David R. Thompson and Lukas Mandrake and Robert O Green. Mixture-Tuned, Clutter Matched Filter for Remote Detection of Subpixel Spectral Signals. NASA Tech Briefs. (Link to PDF) (CL#13-2373)

Lukas Mandrake. Warn Levels: Where do they come from, and what are they for?. OCO-2 Algorithm Meeting, January 2013, Caltech. ()

Paper Icon Lukas Mandrake, C. Frankenberg, C. W. O'Dell, G. Osterman, P. Wennberg, D. Wunch. Semi-autonomous Sounding Selection for OCO-2. Atmospheric Measurement Techniques, October 2013, 6, 2851-2864. (Link to publisher's page) (CL#13-4317)

Paper Icon David R. Thompson, Lukas Mandrake, Robert O. Green, Steve Chien. A Case Study of Subpixel Target Detection in Multimodal and Outlier-contaminated Scenes. IEEE Geoscience and Remote Sensing Letters, vol. 10 no. 5, 2013. Download PDF (CL#12-5258)

Paper Icon Lukas Mandrake, Umaa Rebbapragada, Kiri Wagstaff, David Thompson, Steve Chien, Daniel Tran, Robert T. Pappalardo, Damhnait Gleeson, Rebecca Castano. Surface Sulfur Detection via Remote Sensing and Onboard Classification. Transactions on Intelligent Systems and Technology, 2012. Download PDF (CL #11-3813)

Paper Icon M. R. Darrach, A. Chutjian, Benjamin Bornstein, A. P. Croonquist, V. Garkanian, J. Hofman, D. Karmon, J. Kenny, R. D. Kidd, S. Lee, J. A. MacAskill, S. M. Madzunkov, Lukas Mandrake, R. T. Schaefer, N. Toomarian. Trace Chemical and Major Constituents Measurements of the International Space Station Atmosphere by the Vehicle Cabin Atmosphere Monitor. American Institute of Aeronautics and Astronautics, 2012. Download PDF ()

Paper Icon Crisp D., B. M. Fisher, C. O'Dell, C. Frankenberg, R. Basilio, H. Bosch, L. R. Brown, R. Castano, B. Connor, N. M. Deutscher, A. Eldering, D. Griffith, M. Gunson, A. Kuze, L. Mandrake, J. McDuffie, J. Messerschmidt, C. E. Miller, I. Morino, V. Natraj, J. Notholt, D. M. O’Brien, F. Oyafuso, I. Polonsky, J. Robinson, R. Salawitch, V. Sherlock, M. Smyth, H. Suto, T. E. Taylor, D. R. Thompson, P. O. Wennberg, D. Wunch, Y. L. Yung. The ACOS CO2 retrieval algorithm - Part II: Global XCO2 data characterization, Atmospheric Measurement Techniques. Atmospheric Measurement Techniques, 2012. Download PDF ()

Paper Icon Lukas Mandrake and Benjamin J. Bornstein and Stojan Madzunkov and John A. MacAskill. Histogrammatic Method for Determining Relative Abundance of Input Gas Pulse. NASA Tech Briefs. (Link to PDF) (CL#12-2376)

Paper Icon Lukas Mandrake. Adaptation of the AMDIS Method to Flight Status on the VCAM Instrument. NASA Tech Briefs. (Link to PDF) (CL#11-2376)

Paper Icon Wunch, D., P. O. Wennberg, G. C. Toon, B. J. Connor, B. Fisher, G. B. Osterman, C. Frankenberg, L. Mandrake, C. W. O’Dell, P. Ahonen, S. C. Biraud, R. Castano, N. Cressie, D. Crisp, N. M. Deutscher, A. Eldering, M. L. Fisher, D. W. T. Griffith, M. Gunson, P. Heikkinen, G. Keppel-Aleks, E. Kyrö, R. Lindenmaier, R. Macatangay, J. Mendonca, J. Messerschmidt, C. E. Miller, I. Morino, J. Notholt, F. A. Oyafuso, M. Rettinger, J. Robinson, C. M. Roehl, R. J. Salawitch, V. Sherlock, K. Strong, R. Sussmann, T. Tanaka, D. R. Thompson, O. Uchino, T. Warneke, S. C. Wofsy. A method for evaluating bias in global measurements of CO2 total columns from space. Atmospheric Chemistry and Physics, v11, n23, pp. 12317-12337, 2011. Download PDF ()

Paper Icon Martha S. Gilmore, David R. Thompson, Laura J. Anderson, Nader Karamzadeh, Lukas Mandrake, Rebecca Castaño. Superpixel segmentation for analysis of hyperspectral data sets, with application to Compact Reconnaissance Imaging Spectrometer for Mars data, Moon Mineralogy Mapper data, Ariadnes Chaos, Mars. J. Geophys. Res. vol. 116, E07001. PDF from JGR web site (CL#11-1799)

Paper Icon David R. Thompson, Martha Gilmore, Lukas Mandrake, Rebecca Castano. Automatic Detection of Water and Mafics in M3 Radiance Images. LPSC, March 2011. Download PDF (CL#11-0002)

Paper Icon M. R. Darrach, A. Chutjian, Benjamin Bornstein, A. P. Croonquist, V. Garkanian, V. R. Haemmerle, J. Hofman, W. M. Heinrichs, D. Karmon, J. Kenny, R. D. Kidd, S. Lee, J. A. MacAskill, S. M. Madzunkov, Lukas Mandrake, T. M. Rust, R. T. Schaefer, J. L. Thomas, N. Toomarian. On-Orbit Measurements of the ISS Atmosphere by the Vehicle Cabin Atmosphere Monitor. American Institute of Aeronautics and Astronautics, July 2011. Download PDF ()

Paper Icon M. R. Darrach, A. Chutjian, Benjamin Bornstein, A. P. Croonquist, V. Garkanian, V. R. Haemmerle, W. M. Heinrichs, D. Karmon, J. Kenny, R. D. Kidd, S. Lee, J. A. MacAskill, S. M. Madzunkov, Lukas Mandrake, T. M. Rust, R. T. Schaefer, J. L. Thomas, N. Toomarian. Validation Test Results from the Vehicle Cabin Atmosphere Monitor. American Institute of Aeronautics and Astronautics, July 2010. Download PDF ()

D. F. Gleeson, R. T. Pappalardo, S. E. Grasby, M. S. Anderson, B. Beauchamp, R. Castano, S. A. Chien, T. Doggett, L. Mandrake, K. L. Wagstaff. Characterization of a sulfur-rich Arctic spring site and field analog to Europa using hyperspectral data. Remote Sensing of the Environment, June 15, 2010, 114(6), p. 1297-1311.

Paper Icon David R. Thompson, Lukas Mandrake, Martha Gilmore, Rebecca Castano. Superpixel Endmember Detection. Transactions on Geoscience and Remote Sensing, 48(11):4023-4033, Nov. 2010. Download PDF (CL#10-2172)

Paper Icon M. R. Darrach, A. Chutjian, B. J. Bornstein, A. P. Croonquist, V. Garkanian, V. R. Haemmerle, W. M. Heinrichs, D. Karmon, J. Kenny, R. D. Kidd, S. Lee, J. A. MacAskill, S. M. Madzunkov, L. Mandrake, T. M. Rust, R. T. Schaefer, J. L. Thomas, N. Toomarian. Validation Test Results from the Vehicle Cabin Atmosphere Monitor. International Conference on Environmental Systems (ICES), July 2010. Download PDF (CL#10-0419)

Paper Icon Lukas Mandrake, David R. Thompson, Martha Gilmore, Rebecca Castano, Eldar Z. N. Dobrea. Automated Neutral Region Selection Using Superpixels. Proceedings of the IEEE WHISPERS conference, June 2010. Download PDF (CL#10-0557)

Paper Icon L. Mandrake, D. R. Thompson, M. Gilmore, R. Castano. Hii-HAT: an IDL/ENVI Toolkit for Rapid Hyperspectral Inquiry. 41st Lunar and Planetary Sciences, March 2010. Download PDF (CL#10-0569)

Paper Icon David R. Thompson, Lukas Mandrake, Martha Gilmore, Rebecca Castano. Superpixel Segmentation for Endmember Detection in Hyperspectral Images. Proceedings of the American Geophysical Union conference, December 2009. Download PDF ()

Paper Icon Lukas Mandrake, Kiri L. Wagstaff, Damhnait Gleeson, Umaa Rebbapragada, Daniel Tran, Rebecca Castano, Steven Chien, Robert T. Pappalardo. Onboard SVM Analysis of Hyperion Data to Detect Sulfur Deposits in Arctic Regions. Proceedings of the IEEE WHISPERS conference, August 2009. Download PDF (CL #09-1964)

Paper Icon Lukas Mandrake, Kiri L. Wagstaff, Damhnait Gleeson, Umaa Rebbapragada, Daniel Tran, Rebecca Castano, Steven Chien, Robert T. Pappalardo. Hyperspectral Sulfur Detection Using an SVM with Extreme Minority Positive Examples Onboard EO-1. IJCAI AI in Space Workshop Conference, July 2009. Download PPT (CL #09-2372)

Paper Icon Lukas Mandrake, Kiri L. Wagstaff, Damhnait Gleeson, Umaa Rebbapragada, Daniel Tran, Rebecca Castano, Steven Chien, Robert T. Pappalardo. Onboard Detection of Natural Sulfur on a Glacier via an SVM and Hyperion Data. Proceedings of the 30th IEEE Aerospace Conference, March 2009. Download PDF (CL #08-4689)

Paper Icon Lukas Mandrake, Seungwon Lee, Benjamin Bornstein, Brian Bue. Adapting AMDIS for Autonomous Spectral Identification of Hazardous Compounds for ISS Monitoring. Proceedings of the 30th IEEE Aerospace Conference, March 2009. Download PDF (CL #08-4703)

Paper Icon Seungwon Lee, Lukas Mandrake, Benjamin Bornstein, Brian Bue. Quantification of Trace Chemicals using Vehicle Cabin Atmosphere Monitor. Proceedings of the 30th IEEE Aerospace Conference, March 2009. Download PDF (CL #09-1960)

Paper Icon A. Chutjian, M. R. Darrach, Benjamin Bornstein, A. P. Croonquist, E. Edgu-Fry, D. J. Fry, V. Garkanian, M. A. Girard, V. R. Haemmerle, W. M. Heinrichs, R. D. Kidd, S. Lee, J. A. MacAskill, S. M. Madzunkov, Lukas Mandrake, T. M. Rust, R. T. Schaefer, J. L. Thomas, N. Toomarian, M. J. Walch. Results from the Vehicle Cabin Atmosphere Monitor: A Miniature Gas Chromatograph/Mass Spectrometer for Trace Contamination Monitoring on the ISS and Orion. American Institute of Aeronautics and Astronautics, June 2008. Download PDF ()

B. Bornstein, S. Lee, L. Mandrake. Vehicle Cabin Atmosphere Monitor (VCAM) Mass Spectrometer - Algorithms for Chemical Species Identification and Quantification. NASA NPO 45695, 2008.

Paper Icon Umaa Rebbapragada, Lukas Mandrake, Kiri L. Wagstaff, Damhnait Gleeson, Rebecca Castano, Steve Chien, Carla E. Brodley. Improving Onboard Analysis of Hyperion Images by Filtering Mislabeled Training Data Examples. Proceedings of the 30th IEEE Aerospace Conference, March 2009. Download PDF (CL #09-0103)

Paper Icon Michael C. Burl, Michael J. Garay, Clare Averill, Benjamin Bornstein, Lukas Mandrake, Yi Wang, Justin Ng. Generation of Object-Centric Datasets with Adaptive Sky. Earth Science Technology Conference 2008 Proceedings, Invited Paper. Download PDF (CL) (2008/06/XX)

M.C. Burl, M.J. Garay, C. Averill, B.J. Bornstein, L. Mandrake, Justin Ng, Yi Wang. Adaptive sky sensor web: novel multi-instrument, multi-satellite observations of volcanic ash. Workshop on Smart Sensing and Situation Awareness in Sensor Networks, 4th International Conference on Intelligent Environments (IE08) (CP541), Seattle, WA. (CL) (2008/07/XX)

Paper Icon Ashley Gerard Davies, Daniel Q. Tran, Lukas Mandrake, Kate Boudreau, Johanna Cecava, Andres Mora Vargas, Alberto Behar, Steve Chien, Rebecca Castano, Stuart Frye, Dan Mandl, Lawrence Ong, Philip Kyle, Robert Wright. The Model-Based Volcano Sensor Web: Progress in 2007. Earth Science Technology Conference 2008 Proceedings. Download PDF (CL)

Paper Icon Benjamin Bornstein, Seungwon Lee, Luke Mandrake, Brian Bue. Autonomous Identification and Quantification of Chemical Species with VCAM for use Onboard the ISS. IEEE Aerospace Big Sky March 2008. Download PDF ()

Paper Icon A. Chutjian, M. R. Darrach, B. Bornstein, A. P. Croonquist, E.Edgu-Fry, D. J. Fry, V. Garkanian, M. A. Girard, V. R. Haemmerle, W.M. Heinrichs, R. D. Kidd, S. Lee, J. A. MacAskill, L. Mandrake, T. M.Rust, R. T. Schaefer, J. L. Thomas, N. Toomarian, M. J.Walch, M.Christensen, D. Demonbrun, R. Vanholden, P. M. Holland, B. J.Shortt. Results Using the Vehicle Cabin Atmosphere Monitor: AMiniature Gas Chromatograph/Mass Spectrometer for Trace ContaminationMonitoring on the ISS and Orion. International Conference on Environmental Systems (ICES), July 2008. ()

Paper Icon Ashley Davies, Robert Wright, Philip Kyle, Rebecca Castano, Steve Chien, Daniel Tran, Scott Chadde, Lukas Mandrake, Dan Mandl, Stuart Frye. A Science Model-Driven Autonomous Volcano Sensor Web. NASA Science Technology Conference 2007 Proceedings. Download PDF (CL)

Paper Icon Kiri Wagstaff, Dennis Corwin, Lukas Mandrake, Alex Roper, Lucas Scharenbroich. Heterogeneous Agricultural Research Via Interactive, Scalable Technology (HARVIST): Infusion for the USDA. Earth Science Technology Office Final Report. Download PDF ()

A.J. Mannucci, Bruce T Tsurutani, Byron Iijima, Attila Komjathy, Brian Wilson, Xiaoqing Pi, Lawrence Sparks, George Hajj, Lukas Mandrake. Hemispheric daytime ionospheric response to intense solar wind forcing. Inner Magnetosphere Interactions: New Perspectives from Imaging, pp. 261-275.

E. Yizengaw, H. Wei, M. B. Moldwin, D. Galvan, L. Mandrake, A. Mannucci. The Correlation Between Mid-Latitude Trough and the Plasmapause. Geophysical Research Letters, vol 32, L10102, doi:10.1029/2005GL022954, 2005. (05-2201)

Paper Icon Lukas Mandrake, Brian Wilson, Chun-ming Wang, George Hajj, Anthony Mannucci, Xioquing Pi. A performance evaluation of the operational Jet Propulsion Laboratory / University of Southern California Global Assimilation Ionospheric Model (JPL/USC GAIM). Journal of Geophysical Research: Space Physics (1978--2012). Download PDF (CL #05-0886)

L. Mandrake, B.D. Wilson, C. Wang, G.Hajj, A. Mannucci, X. Pi. Performance of the Operational JPL/USC Global Assimilation Ionospheric Model. J. Geophys. Res.11th International Ionospheric Effects Symposium, Alexandria VI, May 3-5, 2005. (05-0799)

Lukas Mandrake, B. Wilson, G. Hajj, X. Pi, C. Wang, G. Rosen. Daily Operation and Validation of a Global Assimilative Ionosphere Model. URSI National Radio Science Meeting, Boulder, CO, January 2005. (04-0125)

Lukas Mandrake. Computational Studies of Narrow Electron Beams and Oblique Inertial Alfven Waves in a Gravitationally Bound Density Gradient. Doctoral Dissertation, Department of Plasma Physics at the University of California, Los Angeles, July 2002. ()

Lukas Mandrake, Phillip Pritchett, Ferdinand Coroniti. Electron Beam Generated Solitary Structures in a Nonuniform Plasma System. Geophysical Research Letters, Vol. 27, No. 18, pp 2869-2872, 2000. ()

Lukas Mandrake, Phillip Pritchett, Ferdinand Coroniti. Bipolar Electron Beam Structures in the Auroral Region. American Geophysical Union, May 2000. ()

Lukas Mandrake, Phillip Pritchett, Ferdinand Coroniti. Electron Beam Generated Potential Structures Along Auroral Field Lines. American Geophysical Union, December 1999. ()

Lukas Mandrake, Walter Gekelman. Large-scale Windows 95-based data-acquisition system using LabVIEW. Computers in Physics, Vol. 11, No. 5, Sep/Oct 1997. ()

L. Mandrake, W. Gekelman, T. Drozdenko, S. Vincena. Experimental Studies of an Alfvénic Pulse. Interrelation Between Plasma Experiments in Laboratory and Space (IPELS) Conference, 1997. ()


Dr. Lukas Mandrake