Location-allocation of facilities in service systems is an essential factor of their performance. One of the considerable situations which less addressed in the relevant literature is to balance service among customers in addition to minimize location-allocation costs. This is an important issue, especially in the public sector. Reviewing the recent researches in this field shows that most of t...

honey is the oldest natural food produced by honeybee and comprises wide variety of valuable ingredients including carbohydrate, proteins, minerals, vitamins, organic acids, polyphenols and flavonoids that contribute to well-known therapeutic properties. this review provide available scientific information on different ways of honey adulteration and chemical contamination with the certain focus...

In <span>optimization, scheduling problems is concerning allocations of some resources which are usually limited. These done in order to fulfil criterion by performing tasks or jobs optimize one more objective functions. Simultaneous multi-criteria problem known as np-hard optimization problem. Here, we consider three criteria for a number on single machine. The minimize the sum total com...

In this paper, we develop a new mathematical model for a cyclic multiple-part type threemachine robotic cell problem. In this robotic cell a robot is used for material handling. The objective is finding a part sequence to minimize the cycle time (i.e.; maximize the throughput) with assumption of known robot movement. The developed model is based on Petri nets and provides a new method to calcul...

it has long been supposed that zraiia vouruka?aiia (in yt.8.8) could be a locative singular form of the zraiiah- and vouruka?a- stems. i shall attempt to show here that this explanation is incorrect. there are, however, several good pieces of evidence in the above- mentioned avestan text that lead us to propose another reasonable explanation on this grammatical issue.