Edwin Chong | Colorado State University (original) (raw)
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Papers by Edwin Chong
IEEE Control Systems Letters, 2021
Journal of Control and Decision, 2017
IEEE Transactions on Signal and Information Processing over Networks, 2017
European Journal of Control
2013 IEEE Global Conference on Signal and Information Processing, 2013
Proceedings of 1995 American Control Conference - ACC'95
Abstract For a complex natural or a man-made system, automated fault detection and diagnosis ofte... more Abstract For a complex natural or a man-made system, automated fault detection and diagnosis often presents a challenging task. We previously (1994) presented results on the testability of a system whose fault behavior is modeled by a nondeterministic automaton. We also discussed issues pertaining to testability including minimal testable observation and the finest testable partition of the fault space. In this paper, we show that the definition of testability has a natural equivalent interpretation in terms of “one-step” faults. Specifically, ...
2005 International Conference on Wireless Networks, Communications and Mobile Computing, 2005
SPIE Proceedings, 2013
ABSTRACT General precursors and growth model of Laser Induced Damage (LID) have been the focus of... more ABSTRACT General precursors and growth model of Laser Induced Damage (LID) have been the focus of research in fused silica material, such as polishing residues, fractures, and contaminations. Assuming the absorption due to trapped material and mechanical strength is the same across the surfaces, various studies have shown that the LID could be minimized by reducing the light field intensification of the layers upon the laser strikes. By revisiting the definition of non-ionising radiation damage, this paper presents the modelling work and simulation of light intensification of laser induced damage condition. Our contribution is to predict the LID growth that take into various factors, specifically on the light intensification problem. The light intensification problem is a function of the inter-layer or intra-layer micro-optical properties, such as transmittance and absorption coefficient of the material at micro- or sub-micro-meter range. The proposed model will first estimate the light propagation that convoluted with the multiply scattering light and subsequently the field intensification within the nodule dimension. This will allow us to evaluate the geometrical factor of the nodule effect over the intensification. The result show that the light intensification is higher whenever the backscattering and multiple scattering components are higher due to its interference with the incoming wave within its coherency.
![Research paper thumbnail of The Control Problem [President's Message]](https://attachments.academia-assets.com/96215604/thumbnails/1.jpg)
](IEEE Control Systems, 2017
2001 MILCOM Proceedings Communications for Network-Centric Operations: Creating the Information Force (Cat. No.01CH37277)
Journal of Applied Mathematics, 2013
Journal of Parallel and Distributed Computing, Sep 1, 2001
1990 American Control Conference, May 23, 1990
Abstract We propose two estimation and updating schemes which use infinitesimal perturbation anal... more Abstract We propose two estimation and updating schemes which use infinitesimal perturbation analysis based derivative estimates for the recursive optimization of queues. With the aid of extensions of convergence theorems from stochastic approximation, we prove convergence of the two proposed algorithms, when applied to an M/G/1 queue and to a multi-queue system. We also present simulation results illustrating our theorems for the case of an M/M/1 queue, and a three-queue system.
IEEE Control Systems Letters, 2021
Journal of Control and Decision, 2017
IEEE Transactions on Signal and Information Processing over Networks, 2017
European Journal of Control
2013 IEEE Global Conference on Signal and Information Processing, 2013
Proceedings of 1995 American Control Conference - ACC'95
Abstract For a complex natural or a man-made system, automated fault detection and diagnosis ofte... more Abstract For a complex natural or a man-made system, automated fault detection and diagnosis often presents a challenging task. We previously (1994) presented results on the testability of a system whose fault behavior is modeled by a nondeterministic automaton. We also discussed issues pertaining to testability including minimal testable observation and the finest testable partition of the fault space. In this paper, we show that the definition of testability has a natural equivalent interpretation in terms of “one-step” faults. Specifically, ...
2005 International Conference on Wireless Networks, Communications and Mobile Computing, 2005
SPIE Proceedings, 2013
ABSTRACT General precursors and growth model of Laser Induced Damage (LID) have been the focus of... more ABSTRACT General precursors and growth model of Laser Induced Damage (LID) have been the focus of research in fused silica material, such as polishing residues, fractures, and contaminations. Assuming the absorption due to trapped material and mechanical strength is the same across the surfaces, various studies have shown that the LID could be minimized by reducing the light field intensification of the layers upon the laser strikes. By revisiting the definition of non-ionising radiation damage, this paper presents the modelling work and simulation of light intensification of laser induced damage condition. Our contribution is to predict the LID growth that take into various factors, specifically on the light intensification problem. The light intensification problem is a function of the inter-layer or intra-layer micro-optical properties, such as transmittance and absorption coefficient of the material at micro- or sub-micro-meter range. The proposed model will first estimate the light propagation that convoluted with the multiply scattering light and subsequently the field intensification within the nodule dimension. This will allow us to evaluate the geometrical factor of the nodule effect over the intensification. The result show that the light intensification is higher whenever the backscattering and multiple scattering components are higher due to its interference with the incoming wave within its coherency.
IEEE Control Systems, 2017
2001 MILCOM Proceedings Communications for Network-Centric Operations: Creating the Information Force (Cat. No.01CH37277)
Journal of Applied Mathematics, 2013
Journal of Parallel and Distributed Computing, Sep 1, 2001
1990 American Control Conference, May 23, 1990
Abstract We propose two estimation and updating schemes which use infinitesimal perturbation anal... more Abstract We propose two estimation and updating schemes which use infinitesimal perturbation analysis based derivative estimates for the recursive optimization of queues. With the aid of extensions of convergence theorems from stochastic approximation, we prove convergence of the two proposed algorithms, when applied to an M/G/1 queue and to a multi-queue system. We also present simulation results illustrating our theorems for the case of an M/M/1 queue, and a three-queue system.