We study three quantities that can each be viewed as the time needed for a finite irreducible Markov chain to “forget” where it started. One of these is the mixing time, the minimum mean length of a stopping rule that yields the stationary distribution from the worst starting state. A second is the forget time, the minimum mean length of any stopping rule that yields the same distribution from ...

In two experiments, subjects were instructed either to remember or to forget each word. Following study, two tests were given, one a direct test of memory requiring conscious recollection of the study list and the other an indirect test that could be performed without awareness of the study list. In Experiment l, subjects recognized more remember than forget words (direct test) and completed mo...

The main challenge in the field of water distribution systems (WDS) is (re)designing network order to achieve savings. In many systems, there are pumping stations designed for much larger flows than what would be observed under normal operating conditions. On other hand, reducing diameter pipes has become saving method. Designers very often forget design so that it can used fire protection purp...

The purpose of this study was to compare symptoms of PTSD among war affected people and employees in the fire station. Totally, 60 people affected by war and 60 fire workers were selected using simple random sampling. By completing PCL inventory, samples of PTSD were characterized. Data was analysed through SPSS software by independent t-test. As the results showed, severity of PTSD symptoms am...

Considering the increasing growth of cities, population and urban fabric density, it seems necessary that emergency facilities and services such as fire stations are positioned optimally so that they can fulfill the demands well. The aim of this study is the optimization of equipment use in the fire stations, minimization the time to arrive at the incident through management of referral call to...