CT : The two-machine flowshop scheduling problem of minimizing makespan is addressed where jobs have rocessing times which are bounded within certain intervals. The probability distributions of job processing hin intervals are not known. The only known information about job processing times is the lower and upper he decision about a solution of the problem, i.e., finding a sequence, has to be m...

We focus our attention on the problem of sequencing jobs in a permutation flow shop with the objective of minimising the sum of completion times or flowtime. This objective is considered to be more relevant and meaningful for today’s dynamic production environment, and therefore it has attracted the attention of researchers during the last years. As a result, a number of different types of heur...

We consider the problem of minimizing makespan in a no-wait flow-shop with an arbitrary number of machines. We assume that all sublots have the same number of items. We consider the cases with or without loading times. In both cases we show the existence of a critical machine which never remains idle. Then we get a set of general conditions on the processing times and loading times, which bind ...

In this paper, we consider a manufacturing system with two-machine no-wait flowshop scheduling problem where setup times are uncertain. The the performance measure of maximum lateness was addressed in literature (Computational and Applied Mathematics 37, 6774-6794) dominance relations were proposed. We establish new relation show that is, on average, about 90$ \% $ more efficient than existing ...

This paper addresses minimizing the makespan of the distributed permutation flow shop scheduling problem. In this problem, there are several parallel identical factories or flowshops each with series of similar machines. Each job should be allocated to one of the factories and all of the operations of the jobs should be performed in the allocated factory. This problem has recently gained attent...

the processes of cultural transformation in britain in the second half of the 20th century, the fall of the empire, immigration from former colonies and the expansion of the multiculturalism, have influenced new ways of looking at the conceptions of identity of diasporic subjects within britain. examining these experiences, diasporic novelists write about the second generation immigrants in con...

background the prevalence of peptic ulcer disease in hemodialysis patients is more than the general population. they are also more prone to complications including upper gastrointestinal bleeding. the aim of this study was to compare the efficacy of 14 days hybrid regimen with 14 days triple therapy for helicobacter pylori ( h . pylori ) eradication in hemodialysis patients. methods forty hemod...

this research set out to evaluate the effect of combined biological and chemical nitrogen fertilizers on some corn hybrids. to this end an experiment was conducted as split plot on the basis of randomized complete block design with four replications. main plots were included: use of chemical and biological fertilizers in four levels: 100% chemical fertilizer, 75% chemical fertilizer + 100% bio-...