Machine scheduling problems arise in many production processes, and are something that needs to be consider when optimizing the supply chain. Among them, flowshop happen a number of jobs have sequentially processed by machines. This paper addressees, for first time, Permutation Flowshop Scheduling problem with additional Resources during Setups (PFSR-S). In this problem, addition standard permu...

The aim of this paper is to propose a new particle swarm optimization algorithm to solve a hybrid flowshop scheduling with sequence-dependent setup times problem, which is of great importance in the industrial context. This algorithm is called diversified particle swarm optimization algorithm which is a generalization of particle swarm optimization algorithm and inspired by an anarchic society ...

The production facilities of some factories can be considered as a flowshops. Flowshops are composed of resources arranged serially in r sections or stages where a set of n parts is processed. There are buffers between two consecutive stages. Each part has at most r operations (one per stage) and the flow of the jobs is oneway from stage 1 to stage r. In some companies of this type, the input s...

Scheduling for a two-stage production system is one of the most common problems in production management. In this production system, a number of products are produced and each product is assembled from a set of parts. The parts are produced in the first stage that is a fabrication stage and then they are assembled in the second stage that usually is an assembly stage. In this article, the first...

amyloid-β (aβ) self-assembly into cross-β amyloidfibrils is implicated in a causative role in alzheimer’s disease pathology.uncertainties persist regarding the mechanisms of amyloid self assembly and the role of metastable prefibrillar aggregates. aβ fibrilsfeature a sheet-turn-sheet motif in the constituent β-strands; as such, turn nucleation has been proposed as a rate-limiting step in the se...