M. J. Tsai

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The frequency dependence of total respiratory impedance during spontaneous breathing was measured repeatedly in 16 children (3--5 yr old) over a 3-mo period using forced random noise and spectral analysis. Total respiratory resistance, compliance, and inertance, which were calculated fromthe impedance data using regression analysis with a second-order(More)
An analytic approach for fractionating total respiratory resistance into central (Rc) and peripheral (Rp) components is presented. In the analysis, linear regression equations relating the logarithm of the measured total resistance to the logarithm of frequency are derived for data spanning the frequency range 1-16 Hz. The computed slope and intercept are(More)
The frequency dependency of the magnitude and phase angle of total respiratory impedance was measured in apneic dogs at functional residual capacity during forced oscillation by a special electronics unit. Regression analysis of these data yielded estimates of total respiratory resistance (RFO), inertance (IFO), and compliance (CFO). After correcting for(More)
A novel resistive memory with the TiN/Ti/HfO<sub>x</sub>/TiN stack is proposed and fully integrated with 0.18 &#x03BC;m CMOS technology. The excellent memory performances such as low operation current (down to 25 &#x03BC;A), low operation voltage (&lt;;1.5 V), high ON/OFF resistance ratio (above 100), and fast switching speed (10 ns) have been demonstrated(More)
Simultaneous recordings of pressure and flow were made from the renal artery in perfused isolate canine kidneys. The system was perturbated by the administration of angiotensin and prostaglandin A2. The data were recorded on frequency-modulated analog tape and converted to digital form, and a Fast Fourier Transform program was used to calculate input(More)
In this paper, a new type of noise, different from the conventional Random Telegraph Noise (RTN), has been found and analyzed in a resistance random access memory (RRAM). The regular RTN signal is governed by the trapping and detrapping of the electrons. It will appear regularly with a two-level current and the amplitude of the RTN is smaller. However, an(More)