Optimality and numerical efficiency are well known properties of the Kalman filter, whereas its stability property, though equally classical and important in practice, is less often mentioned in the recent literature. The stability of the Kalman filter is usually ensured by the uniform complete controllability regarding the process noise and the uniform complete observability of linear time var...

Complete heart block frequently requires emergency pacing to restore systemic perfusion. We report the case of a 3-yr-old girl undergoing interventional atrial septal defect closure who suffered from transient complete heart block with circulatory arrest. Transthoracic mechanical pacing for more than 3 min provided temporary support, sustaining an adequate cardiac output until sinus rhythm resu...

The purpose of this letter is to provide some contributions one notion Output controllability for Linear Time Varying (LTV) systems which the Complete State Controllability (CSOC), introduced in 60s by Sarachik and Kranc. More precisely, we consider LTV with direct transmission input output establish criteria ensure CSOC finite time these systems. We also give, under assumption time, an explici...

Introduction A Boolean function of n variables is a mapping from {0, 1} to {0, 1}. Boolean functions naturally appear in many areas of mathematics and computer science and constitute a key concept in complexity theory. In this paper we shall study an important problem connected to Boolean functions, a so called Boolean minimization problem, which aims at finding a shortest possible representati...

In this paper, we establish a lower bound on the number of inducing simple n-gons in grid-like arrangements of lines. We also show that the complexity associated with counting the number of inducing n-gons in an arrangement of collinear segments is #P-complete.

We investigate the complexity of membership problems for {∪,∩, ̄ , +,×}-circuits computing sets of integers. These problems are a natural modification of the membership problems for circuits computing sets of natural numbers studied by McKenzie and Wagner (2003). We show that there are several membership problems for which the complexity in the case of integers differs significantly from the ca...

Hypotension is frequently reported during hemodialysis. This study aimed to examine the effect of the intermittent pneumatic circulator on blood pressure during hemodialysis. Sixteen subjects with chronic hemodialysis were recruited. Each subject randomly received two test conditions on separate days, hemodialysis with and without the circulator. The circulator was applied to the subject on low...

The effects of beta-adrenergic blockade with propranolol were studied in 10 patients with complete heart block and fixed rate internal pacemakers. The patients were grouped according to the absence or presence of premature systoles before propranolol was given. In the patients with premature systoles propranolol was uniformly effective in abolishing the premature systoles. Propranolol was found...