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In this paper a game for working memory assessment in children between 4 to 7 years old is introduced. We evaluate the validity of the game as an assessment tool by comparing its results on a group of pre-school children with a commercially validated working memory test. Since the correctness of an assessment highly depends on the attentional state of the subject, several algorithms have been developed...
We propose a new approach to detect and quantify the periodic structure of dynamical systems using topological methods. We propose to use delay-coordinate embedding as a tool to detect the presence of harmonic structures by using persistent homology for robust analysis of point clouds of delay-coordinate embeddings. To discover the proper delay, we propose an autocorrelation like (ACL) function of...
Diagnosis for delay defects becomes more significant as the CMOS process advances to nanometer regime. The most challenging problems of delay fault diagnosis in nanometer process come from the process variation, which results in small delay variations. Small delay variations are difficult to be diagnosed by using existing methods based on a specific fault model. This paper presents a new estimation...
Jitter decomposition is important for identifying root sources of jitter. The limitations of the existing methods for jitter decomposition are discussed and a new approach with a combination of fast Fourier transform and time lag correlation is proposed. The new method reduces the number of equations and improves efficiency of jitter decomposition. Simulation is performed to validate the proposed...
This paper discusses the phase lag of tele-operation system when operator begins to perceive the system's motion lag. The reduction of time lag is very important for high operation performance in tele-operation system. However the threshold of time lag for development of high operability is unknown. Therefore, I obtain the time lag when the operator perceived the motion lag in tele-operation. The...
For Internet based real-time teleoperation systems, unknown and variable time delay can cause instability in the closed loop control system and hence hinder task accomplishment. According to requirement of Internet-based teleoperation, exact prediction of RTT can improve greatly performance of the teleoperation system. In this paper, statistical properties of the Round Trip Timedelay (RTT) are investigated...
In a factory setting, the zero-breakdown concept of manufacturing processes has been eagerly anticipated. In this article, the notion of machine health management technology is introduced in response to this requirement. The technology employs a cyclical and evolutional problem-solving approach using cause-effect structures. This paper will utilize an automatic acquisition method by using sensing...
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