Batch sizing and scheduling problems are usually tough to solve because they seek solutions in a vast combinatorial space of possible solutions. This research aimed test further develop method based on modified steady-state genetic algorithm its performance, both the speed (low computational time) quality final results as low makespan values. paper explores problem determining order size produc...

In this paper we extend a stochastic discrete optimization approach so as to tackle the lot-sizing problem in manufacturing systems. In practice, with the surrogate methodology, the lot sizes are continuously adjusted on-line by the gradient-based approach. The lot sizing determines the number of parts batched together for production. We utilize the queueing approach that evidences the existenc...

In this paper we extend the generalized surrogate optimization approaches and the stochastic comparison so as to tackle the lot-sizing problem in manufacturing system. In practice, with the surrogate methodology, the lot sizes are continuously adjusted on-line by the gradient-based approaches. The lot sizing determines the number of parts batched together for production. We utilize the queueing...

regarding the importance sizing and grading crop in the market and other processing operations, in this study, a machine for hazelnut sizing designed, constructed and evaluated. the machine based on sizing mechanism of diverged belt. the sizing unit has a structure similar to a horizontal belt conveyor. the distance between the ropes at the entrance of the product (the end of the driven roller)...

A new technique for measuring the Particle Size Distribution (PSD) of a soil, known as Single Particle Optical Sizing (SPOS), has been evaluated. A series of tests were conducted to compare the results obtained from sieve analysis and the SPOS method. It was found that for typical laboratory sands, the SPOS method oversizes particles compared to sieving by 20-30%, as predicted by theoretical an...

The textile industry is an important sector of the Brazilian economy, being considered fifth largest in world. To support further growth and development this sector, document proposes a process for production analysis through use Discrete Event Simulation (DES) optimization genetic algorithms. focus on planning weaving processes to help make decisions about batch sizing scheduling activities. I...

A large number of planning and scheduling problems can be formulated as multiperiod MILP models which often require substantial computational expense for their sohition. This paper presents and demonstrates the value of nonstandard formulations of such problems. Based on a variable disaggregation technique which exploits lot sizing substructures, we propose a strategy for the reformulation of c...