Sarah Koskie, Ph.D.

Associate Professor of Electrical & Computer Engineering
Associate Director, Transportation and Autonomous Systems Institute (TASI)

Contact Information:

Office Location: room 164G in the SL building
Office Phone: +1 317.278.9043
Office Fax: +1 317.274.4493
Email: skoskie@iupui.edu

Education:

Ph.D. (Interdisciplinary) Control Theory, Rutgers University, Piscataway, NJ (2003)
M.S. Mathematics, Rutgers University, Piscataway, NJ (1999)
S.B. & S.M. Mechanical Engineering, MIT, Cambridge, MA (1983, 1986)

Research interests:

• Control Theory and Applications
• System Identification
• Fault Detection, Isolation, and Accommodation
• Sensor Fusion
• Transportation Active Safety and Autonomous Systems             
• Modeling, Simulation, and Control Design
• Game Theory and Applications

Teaching:

Fall 2023, Purdue School of Engineering and Technology, IUPUI:

• ECE 301 Signals and Systems   (Fall, 2023)
  

• ECE 569 Introduction to Robotic Systems / ME 57201   (Fall, 2023)

Previous Semesters

• Complete Listing

Publications:

V. Radisavljevic, S. Koskie, "Suboptimal strategy for the finite-time linear-quadratic optimal control problem," IET Control Theory and Applications, vol. 6, no. 10, pp. 1516–1521, 2012.

S. Koskie, C. Coumarbatch, Z. Gajic, "Exact Slow-Fast Decomposition of the Singularly Perturbed Matrix Differential Riccati Equation," Applied Mathematics and Computation, vol. 216, no. 5, pp. 1401–1411, 2010.

S. Koskie and Z. Gajic, "Optimal SIR-Based Power Control Strategies for Wireless CDMA Networks", International Journal of Information and Systems Sciences, vol. 4, no. 2, pp. 204–218, 2007.   pdf

S. Koskie and Z. Gajic, "Signal-To-Interference-Based Power Control for Wireless Networks: A Survey, 1992--2005," Dynamics of Continuous, Discrete and Impulsive Systems B: Applications and Algorithms, vol. 13, no. 2, pp. 187–220, 2006.   pdf

S. Koskie and Z. Gajic, "A Nash Game Algorithm for SIR-Based Power Control in 3G Wireless CDMA Networks," IEEE–ACM Transactions on Networking October, 2005, vol. 13, No. 5, pp. 1017–1026.   pdf

S. Koskie, J. Zapf, "Acceleration of static Nash power control algorithm using Newton iterations,"Dynamics of Continuous, Discrete, and Impulsive Systems B: Applications and Algorithms, 2005, vol. 12-S, pp. 685–690.   pdf

X. Li, S. Koskie, Z. Gajic, "Steffensen iterations for power updates in CDMA wireless networks", Dynamics of Continuous Discrete and Impulsive Systems B: Applications and Algorithms, 2005, vol. 12-S, pp. 691–696.   pdf

S. Koskie, Z. Gajic, "SIR-based Power Control Algorithms for Wireless CDMA Networks: An overview", Dynamics of Continuous Discrete and Impulsive Systems B: Applications and Algorithms, 2003, vol. 10-S, pp. 286–293. pdf

B. Dillon, S. Koskie, "Comparison in simulation of power control algorithms for wireless systems", Dynamics of Continuous Discrete and Impulsive Systems B: Applications and Algorithms, 2003, vol. 10-S, pp. 281–285.

S. Koskie, D. Skataric, and B. Petrovic, "Convergence Proof for Recursive Solution of Linear-Quadratic Nash Games for Quasi-Singularly Perturbed Systems," Dynamics of Continuous, Discrete and Impulsive Systems, Series B: Applications and Algorithms, (invited paper), vol. 9, no. 2, 2002, pp. 317–333.   pdf     Note: The brackets and parentheses missing from the published version are contained in this pdf file which was generated from the same LaTeX file submitted to the journal.

Conference Presentations:

N. Fricke, H. Wisdom, M. Justiss, S. Koskie, R. Dufour, G. Widmann "Automated driving systems - methodological considerations in human factors research", in Proceedings, Vehicular Electronics and Safety (ICVES), 2010 IEEE International Conference on, pp. 168–173, 2010.

A. Maina Ari, S. Koskie, Y. Chen, "Novel optimization strategy to improve fuel economy for heavy-duty trucks", in Proceedings, Vehicular Electronics and Safety (ICVES), 2010 IEEE International Conference on, pp. 122–127, 2010.

S. Koskie and Z. Gajic, "A Homotopy Algorithm for Solving the Linear-Quadratic Optimal Control Problem of Nash Differential Games", Proceedings, The 31st CONGRESS HIPNEF 2008, Banja, Serbia, October 15–17, 2008.

D. Skataric, and S. Koskie, "Nash Games for Power Control of Wireless Systems", ("Nash igre za upravljanje snage u bežičnim sistemima"), Proceedings of the 31st CONGRESS HIPNEF 2008, Banja, Serbia, October 15–17, 2008.

V. Radisavljevic, D. Skataric, and S. Koskie, "Linear-Quadratic Full-State Optimal Controller: Theoretical vs. Practical", ("Linearno-kvadratni optimalni kontroler: theorijski/praktični"), Proceedings of the 31st CONGRESS HIPNEF 2008, Banja, Serbia, October 15–17, 2008.

V. Radisavljevic and S. Koskie, "Using the Steady State Optimal Gain for the Linear-Quadratic Finite Horizon Optimal Control Problem", ("Korišćnje optimalnih pojačanja u ustaljenom stanju u linearno-kvadratnoj optimizaciji na konačnom vremenskom intervalu"), Proceedings of the 31st CONGRESS HIPNEF 2008, Banja, Serbia, October 15–17, 2008.

S. M. Rovnyak, S. Koskie, Y. Sheng, V. S. Rajput, and X. Hu, "Laboratory Testing of a Distributed Generator Unintentional Islanding Detection Scheme," Proceedings of the IEEE PES General Meeting, Pittsburgh, July 20–24, 2008.

V. S. Rajput, S. M. Rovnyak, S. Koskie, and Y. Sheng, "A Microcontroller-Based Phasor Measurement System with CAN Bus Communication," Proceedings of the IEEE PES General Meeting, Pittsburgh, July 20–24, 2008.

Y. Sheng, S. M. Rovnyak, V.S. Rajput, and S. Koskie, "Testing an IEEE 1547 Compliant Generator Controller for Response to Abnormal Voltage," Proceedings of the IEEE PES General Meeting, Pittsburgh, July 20–24, 2008.

A. Minaz, S. Koskie, Y. Chen. "Energy Management Strategies for Fuel Cell Hybrid Electric Vehicles", Proceedings, International Electric Vehicle Symposium, EVS 23, CD-ROM, Anaheim, California, December 2–5, 2007.

Z. Gajic, S. Koskie, and C. Coumarbatch, "On the Singularly Perturbed Matrix Differential Riccati Equation," CDC-ECC'05, 44th IEEE Conference on Decision and Control and European Control Conference ECC 2005, Seville, Spain, December 14–17, 2005.   pdf

S. Koskie, J. Zapf, "Acceleration of Static Nash Power Control Algorithm using Newton Iterations," DCDIS 4th International Conference on Engineering Applications and Computational Algorithms Guelph, Ontario, Canada, July 27–29, 2005.

X. Li, S. Koskie, Z. Gajic, "Stefenssen Iterations for Power Updates in CDMA Wireless Networks," DCDIS 4th International Conference on Engineering Applications and Computational Algorithms Guelph, Ontario, Canada, July 27–29, 2005.

Z. Gajic, D. Skataric, and S. Koskie, "Optimal SIR-based Power Updates in Wireless CDMA Communication Systems," 43rd IEEE Conference on Decision and Control, Paradise Island, The Bahamas, December 14–17, 2004.   pdf

Z. Gajic and S. Koskie, Workshop S–2 (1/2 day) "Power Control in Wireless Communication Networks," presented Monday, December 8 at the 42nd IEEE Conference on Decision and Control (CDC 03), Maui, Hawaii, December 9–12, 2003.

Z. Gajic and S. Koskie, "Newton iteration acceleration of the Nash game algorithm for power control in 3G wireless CDMA networks," Performance and Control of Next-Generation Communications Networks, Proceedings of SPIE , vol. 5244, August, 2003, pp. 115–121.   pdf

S. Koskie and Z. Gajic, "Optimal SIR-Based Power Control in 3G Wireless CDMA Networks," American Control Conference, Denver, June 4–6, 2003.   pdf

Z. Gajic and S. Koskie, "SIR-Based Power Control Algorithms Wireless Networks: An Overview," (invited talk) International Conference on Dynamics of Continuous, Discrete and Impulsive Systems, Guelph, Ontario, May 15–18, 2003.

S. Koskie, "Dynamic Nash Games for Power Control in Wireless Networks," (invited talk) International Conference on Dynamics of Continuous, Discrete and Impulsive Systems, Guelph, Ontario, May 15–18, 2003.

S. Koskie, "Distributed SIR-Based Power Control using Nash Game Algorithms in 3G Wireless CDMA Networks," (invited talk) IEEE Princeton Central Jersey Chapter, December, 2002.

S. Koskie, "A Nash Game Algorithm for SIR-Based Power Control in 3G Wireless CDMA Networks," (invited talk) WINLAB Industrial Advisory Board Meeting, Rutgers University, October 9, 2002.

S. Koskie, D. Skataric, B. Petrovic, and Z. Gajic, "Convergence Proof for Recursive Solution of Linear-Quadratic Nash Games for Quasi-Singularly Perturbed Systems," (invited talk) International Conference on Dynamics of Continuous, Discrete and Impulsive Systems, London, Ontario, July 27–31, 2001.

Z. Gajic, S. Koskie, and C. Coumarbatch, "Exact Slow-Fast Decomposition of the Singularly Perturbed Matrix Differential Riccati Equation," International Conference on Dynamics of Continuous, Discrete and Impulsive Systems, London, Ontario, July 27–31, 2001.

S. Koskie, S. C. Shah, and E. S. Russell, "Surface Temperature Control in Plasma Deposition of Metal Matrix Composites," presented at IFAC Workshop on Intelligent Manufacturing Systems, October 1, 1992.   pdf

S. Koskie and E. S. Russell, "Intelligent Plasma Deposition Processing of Metal Matrix Composites," presented at Advanced Aerospace Materials/Processes Conference and Exposition (AeroMat '92), Anaheim, CA, May, 1992.

Edward S. Russell and Sarah Koskie, "Substrate temperature control in ICPD manufacture of metal-matrix composites," presented at the Symposium on Model-based design of materials and processes – Application of mechanics and material models to design and processing, San Diego, CA, March 4-5, 1992, Proceedings of the Symposium, pp. 147–161.   pdf