background and purpose: preoperative fast is the essential part of preoperative care for those patients who are candidates for elective surgery. fast prolongation results in side effects such as: sweating, irritability, decrease in blood sugar and restlessness. despite the noticeable changes in fasting guidelines and their application in many countries, it seems that in iran, these rules are no...

We present a topological characterization for fuzzy regular languages: we show that there is a bijective correspondence between fuzzy regular languages and the set of all clopen fuzzy subsets with finite image in the induced fuzzy topological space of Stone space (Profinite space), and then we give a representation of closed fuzzy subsets in the induced fuzzy topological space via fuzzy regular...

We consider two minimum loss scheduling problems. Let the arrival epochs and processing times of n consecutive jobs be known. The first problem deals with the case these jobs can be processed by m parallel nonidentical machines without waiting room, i.e., a pure loss system. In the second problem there is one machine with a finite waiting room, i.e., a single machine delay-loss system. For both...

Continuous-time random walks incorporate a random waiting time between random jumps. They are used in physics tomodel particle motion. A physically realistic rescaling uses two different time scales for the mean waiting time and the deviation from the mean. This paper derives the scaling limits for such processes. These limit processes are governed by fractional partial differential equations t...

The paper presents a short overview of two approximation techniques that may be appropriate to estimate performance measures of queueing systems withnon-Poisson offered traffic and finite queue. The techniques evolved from similar techniques originally designed for pure loss systems [1,3J, recently generalized to systems with infinite queue [4J. Consider the queueing system GI/M/N/N+Q, in which...

We investigate the effects of non-zero spatial curvature on cosmic inflation in light microwave background (CMB) anisotropy measurements from Planck 2018 legacy release and 2015 observing season BICEP2 Keck Array. Even a small percentage today would significantly limit total number e-folds scale factor during inflation, rendering just-enough scenarios with kinetically dominated or fast-roll sta...

In this paper, a comparative analysis of the computational aspects of a bulk-service queueing system with variable capacity and finite waiting space is carried out using the Jacobi method of iteration and the rootfinding method. Steady-state probabilities and moments of the number of customers in system at post-departure epochs have been obtained. In the special case when service is performed i...