Pitikhate Sooraksa

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The high resolution ECG (HRECG) is a method of detecting microvolt cardiac signals from patients who have myocardial infarction. These signals are called ventricular late potentials (VLPs). They appear as fractionated signals with irregularity in shape on the body surface. In this study, the continuous wavelet transform (CWT) and the discrete wavelet(More)
This paper proposes an AI-based heuristic optimization techniques based on particle swarm optimization (PSO) to solve two applications i.e. identification of a DC motor and tuning PID controller parameters. The identification of a DC motor application, the 2<sup>nd</sup> order transfer function with time delays is obtained by the searching poles location(More)
Chaotic signals have been used and can be generated by a chaotic circuit for controlling trajectories of mobile robots. Application of chaotically robotic systems may be employed for cleaning and patrolling tasks, when information of areas at work is not available. This paper presents an investigation on the trajectory of chaotic guiding signals generated(More)
In case of no map, trajectory planning could be a difficult task for robot motions to navigate around the assigned patrol areas. Chaotic mobile robots that move in chaotic patterns can be used to solve this problem. This paper is motivated by the question in seeking for suitable chaotic pattern for the aforementioned problem. Twenty-five chaotic patterns(More)
This work presents the design of a stream encryption algorithm using chaotic functions. Various chaotic functions which are highly sensitive and unpredictable to initial conditions have been tested for use as a key stream. A technique employing multi-chaotic function generation for increasing the complexity of the keystream is presented. The result of a(More)
More than 90 independent honeypots have observed malware traffic at the Japanese tier-1 backbone. Typical attacks were made by multiple servers, coordinating to send many kinds of malware. This paper aims to discover some frequent new sequential attack patterns of malware. It is not easy to identify particular patterns logs of one year because the volume of(More)
The quantitative method known as credit scoring has been developed for the credit assessment problem. Credit scoring is essentially an application of classification techniques, which classify credit customers into different risk groups. The financial institutions are being more and more obliged to build credit scoring models assessing the risk of default of(More)
The issue of this paper is to show working status of a robot in the form of face emotion which shows the creation of fuzzy emotion generator. This fuzzy emotion generator uses Takagi-Sugeno (TS) fuzzy system to process input data from heat sensors on CPU and batter indicator into emotional output of a robot for visualization. The visualization system that(More)
The application of chaos in engineering field has been attracted much attention due to many potential applications include fan heaters, air-conditions, and dish washing machines. Even though the applied chaos in robot guidance is also not new, the problem of navigation of autonomous mobile robot in a totally unknown environment can be accomplished by using(More)