In this paper, generalized R ′ -implications are introduced and studied. Although they not always fuzzy implications, the sufficient necessary condition such that a id="M2"> -operation is implication discovered proved. The satisfaction or violation of some basic...

We analyzed the effect of changing posture from supine to standing on the variability of R-R, P-R, and R-T intervals in 10 healthy volunteers using power spectral analysis. An electrocardiogram and respiratory trace were recorded before and after posture change. Variability in the P-R and R-T intervals was much less than in the R-R interval and demonstrated a lower low-frequency (LF)-to-high-fr...