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This paper describes an unconstrained pneumatic method of estimating the δ-wave activity of the brain from the heartbeat signal. Based on experiments showing that transinformation of the heartbeat signal corrupted by body movement was correlated with the δ-wave activity, we developed a method of estimating the percentage of the δ-wave included in the EEG from the transinformation...
The ABR characters have been used especially in medical fields. But the ABR detail system is not sufficiently clear. Therefore the studies of the ABR system and the Life Support system have been performed. Especially from such view point as information and communication process the ABR characters are needed to be discussed. In this paper the expanded partial differential equation models of the ABR...
Transformers in outdoor substations often need to comply with strict noise regulation standards in urban areas. In this paper the authors propose a practical method for determining the acoustic noise levels of transformers to be reduced in an urban outdoor substation. The proposed algorithm is based on a pseudo-inverse calculation using an empirical formula for noise levels at the boundary points...
In an orthogonal frequency division multiplexing (OFDM) system, a guard interval (GI) is used to remove the inter-symbol interference (ISI) due to a multipath channel. When the length of the GI is shorter than the maximum delay of the multipath channel, the ISI occurs. On the other hand, a long GI decreases transmission efficiency. In this paper, we propose an adaptive control method of the guard...
Capacitive Micro-machined Ultrasound Transducers (CMUTs) with beam structures independently control resonance frequency and fractional band width (FBW). We used a theoretical approach to calculate equivalent stiffness and mass with CMUT diaphragm with rectangular beams. We also investigated the relationship between a base diaphragm's thickness and width and those of beams in terms of resonance frequency,...
This paper describes the application result of the observer-based design method for the loop control of bullblock drawing machines. The salient features of this design method are that the disturbance observer is constructed as a constitutive control loop without a conventional PI control loop and the system design is accomplished in a more consistently way than the method which uses the disturbance...
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