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Otsu's method for speech endpoint detection
고유(Yu Gao),장한(Xian Zang),정길도(Kil To Chong) 대한전기학회 2009 정보 및 제어 심포지엄 논문집 Vol.2009 No.5
This paper presents an algorithm, which is based on Otsu's method, for accurate and robust endpoint detection for speech recognition under noisy environments. The features are extracted in time domain, and then an optimal threshold is selected by minimizing the discriminant criterion, so as to maximize the separability of the speech part and environment part. The simulation results show that the method playa good performance in detection accuracy.
Worst-case optimal feedback control policy for a remote electrical drive system with time-delay
고유(Gao Yu),장정(Zheng Chang),이창구(Chang Goo Lee),정길도(Kil To Chong) 대한전기학회 2007 대한전기학회 학술대회 논문집 Vol.2007 No.4
This paper considers an optimal control problem for a remote control to an electrical drive system with a DC motor. Since it is a linear control system with time-delay subject to unknown but bounded disturbance, we construct a worst-case feedback control policy. This policy can guarantee that, for all admissible uncertain disturbances, the real system state should be in a prescribed neighborhood of a desired value, and the cost functional takes the best guarantee value. The worst-case feedback control policy is allowed to be corrected at one correction point between the initial to the final time, which is equivalent to solving a 1-level min-max problem. Since the min-max problem at the stage does not yield a simple analytical solution, we consider an approximate control policy, which is equivalent and can be solved explicitly in the numerical experiments.
Model Predictive Tracking Control of Wheeled Mobile Robots
고유(Yu Gao),정길도(Kil To Chong) 대한전기학회 2007 대한전기학회 학술대회 논문집 Vol.2007 No.10
This paper presents a model predictive controller for tracking control of the wheeled mobile robots (WMRs) subject to nonholonomic constraint. The input-output feedback-linearization method and the mode transformation are used. The performance of the proposed control algorithm is verified via computer simulation. It is shown that the control strategy is feasible.
高瑜(GAO Yu) 중국영화포럼 2014 영화중국 Vol.1 No.1
Seediq Baleis is a Taiwanese historical drama-epic film directed by Wei Te-Sheng and produced by John Woo, what is based on ‘Wushe Incident’ in central Taiwan in 1930. The origin of WuShe Event is the Japanese colonial forced Seediq people into forest to cunt down trees. While Seediq people depend mainly on hunting and farming for a living, depending on the forest for the holy land. The Japanese timeless oppression, finally make Seediq people become unbearable, decided revolt in October 27, 1930 uprising. WuShe region hold joint games in October 27, 1930. Mona Rudo head his clansmen assault WuShe public school suddenly, killing the 134 Japanese people. After that, the Japanese aggrandized military strength and launched a battle with Seediq people lasted more than forty days. In the end, the Seediq people were suppressed. This paper selects the representative scenes of the protagonist ‘Mona Rudo’, focus on the five events, through the analysis of the scenes to explore the way of representation of the ‘national consciousness’ of the film.