the probability of losing a customer in m/g/n/0 and gi/m/n/0 loss queuing systems withheterogeneous servers is minimized. the first system uses a queue discipline in which a customer who arriveswhen there are free servers chooses any one of them with equal probability, but is lost otherwise. providedthat the sum of the servers rates are fixed, loss probability in this system attains minimum val...

the square map is one of the functions used in cryptography. for instance, the square map is used in rabin encryption scheme, block cipher rc6 and stream cipher rabbit, in different forms. in this paper, we study statistical properties of the output of the square map as a vectorial boolean function. we obtain the joint probability distribution of arbitrary number of the upper and the lower bits...

the implementation of different silvicultural systems can be effective on different characteristics of forest stands, such as stand structure and diameter distribution of trees. this study was carried out in shafaroud forests of gilan province of northern iran. the objectives of this research were 1) to evaluate the suitability of different probability distribution functions, including weibull,...

Identifying and counting the total number of biological species observed, when plotted against a measure of the effort used to record them, gives rise to a species accumulation curve. We investigate estimation of the total number of species and other relevant properties of accumulation by elaborating on the multinomial model (Nakamura and Peraza, 1998, Journal of Agricultural, Biological, and E...

Nonthermal correction to the emission probability of particles from black holes can be obtained if backreaction or self-gravitational effects emitted on hole spacetime are taken into consideration. These nonthermally conserve entropy hole---i.e., system radiated after complete evaporation matches initial hole. Using nonthermal probability, we have determined for a mass $M$ completely evaporated...

A novel distribution called the Juchez is proposed and studied. This composite of both exponential gamma distributions. The properties features this are studied, with empirical emphasis: on inequality relationship within measures central tendency, coefficient variation. model parameter was estimated using method maximum likelihood, where asymptotic consistent numerically studied as well. flexib...