the product rate variation problem minimizes the variation in the rate at which different models of a common base product are produced on the assembly lines with the assumption of negligible switch-over cost and unit processing time for each copy of each model. the assumption of significant setup and arbitrary processing times forces the problem to be a two phase problem. the first phase determ...

Electrification of heating and transportation can be greatly combined with excess energy production from variable renewable sources that exist in many geographical islands. Grid interconnections, where available, play a vital role the system as provide required balance between consumption demand but limitations emerge due to cable capacity other technical constraints, which cases, lead curtailm...

we prove a strong convergence result for a sequence generated by halpern's type iteration for approximating a common fixed point of a countable family of quasi-lipschitzian mappings in a real hilbert space. consequently, we apply our results to the problem of finding a common fixed point of asymptotically nonexpansive mappings, an equilibrium problem, and a variational inequality problem for co...

in this paper the conditional location problem is discussed. conditional location problems have a wide range of applications in location science. a new meta-heuristic algorithm for solving conditional p-median problems is proposed and results are compared to those of the previous studies. this algorithm produces much better results than the previous formulations.

objective neurodevelopmental disability is one of the most common problems of children referred to  pediatric neurology clinics. these children may suffer from speech delay, intellectual deficiency and behavioral disorder. some patients with neurodevelopomental delay, especially those with intellectual disability and speech problems, have abnormal electroencephalograms, without clinical seizure...

behavioral problems in cats have drawn more attention in recent years since they affect the cat-owner relationship. this study was designed to study the rate of cats with undesirable behaviors according to their owners. frequency of behavioral problems in 167 cats attending small animal hospital, faculty of veterinary medicine, university of tehran, was evaluated using a questionnaire. accordin...