although several papers have studied no-idle scheduling problems, they all focus on flow shops, assuming one processor at each working stage. but, companies commonly extend to hybrid flow shops by duplicating machines in parallel in stages. this paper considers the problem of scheduling no-idle hybrid flow shops. a mixed integer linear programming model is first developed to mathematically form...

nowadays, technological development and the appearance of new informational and communicational devices have been lead to new methods for communication and generating and storing of data. the growth of using of these methods in commercial and daily connection has caused a new version of evidence called electronic evidence. although the nature of electronic and paper evidence are different, the ...

in order to simultaneously improve wet and dry strengths of paper and decrease environmental issues related to the wet strength resins, in this study effect of application method of wet strength additives on paper properties was investigated. wet strength resins were applied in four methods including spraying an aqueous glyoxal solution on to the surface of wet paper, addition of aminated polya...

osteoarthritis is the most common joint disease.the main pathologic manifestation of disease is local destruction of cartilage in diarthrodial joint. new bone formation in marginal surface of the joint is a sign progressive disease. many systemic and local factors are introduced in initiate and progression of osteoarthritis include: age, sex, weight, race, genetic background, bone densitometry,...