This work investigates a dynamic solution of human–machine systems with human error and common-cause failure. By means functional analysis, it is proved that the semigroup generated by underlying operator converges exponentially to projection analyzing spectral property operator, asymptotic expressions system’s time-dependent solutions are presented. We also provide numerical examples illustrat...

A partition {Ci}i∈I of a Boolean algebra S in a probability measure space (S, p) is called a Reichenbachian common cause system for the correlated pair A, B of events in S if any two elements in the partition behave like a Reichenbachian common cause and its complement, the cardinality of the index set I is called the size of the common cause system. It is shown that given any correlation in (S...

Introduction: Hoarseness of voice is a very common condition and is caused by recurrent laryngeal nerve palsy. Many possible causes of unilateral vocal cord paralysis are known, including malignant or less often benign tumors, iatrogenic injury, inflammation, or post radiation fibrosis causing nerve palsy due to encasement. Cardiovocal syndrome or Ortner’s syndrome is hoarseness due to left rec...

Abstract The reliability and safety of any system is the most important qualitative characteristic of a system. This qualitative characteristic is of particular importance in systems whose functions are under various stresses, such as high temperature, high speed, high pressure, etc. A considerable point, which is rarely taken into account when calculating the reliability and safety of syst...

Chronic renal failure is an uncommon disease in children with some difference in the etiology in different countries. In this study on 180 children (From 1987 to 1997 in Shiraz) with age range of 3 months to 15 years (mean 8.6±4.2 years). The male to female ratio was 1. 57: 1. The etiology of chronic renal failure in decreasing order of frequency were: reflux nephropathy (25 % ) , glbmerular di...

Background: Acetaminophen is widely used as an analgesic and antipyretic drug and it is a frequent cause of acute drug poisoning.This study was carried out to investigate the demographic information and clinical and laboratory findings in acetaminophen poisoning patients referred to “17 Shahrivar” and “Razi” educational hospitals, Rasht. Methods: In this retrospective cross-sectional study, 1...