in many real world assembly line systems which the work-piece is of large size more than one worker work on the same work-piece in each station. this type of assembly line is called multi-manned assembly line (mal). in the classical multi-manned assembly line balancing problem (malbp) the objective is to minimize the manpower needed to manufacture one product unit. apart from the manpower, othe...

This study proposes a simulated annealing-based approach for simultaneously solving balancing and sequencing problems of mixed-model U-lines. The proposed approach is capable of minimizing the number of workstations required on the mixed-model U-line as well as minimizing absolute deviation of workloads (ADW) among workstations. An experiment to evaluate the performance of the algorithm is also...

We present a methodology for automatic corrosion detection in digital images of carbon steel storage tanks and pipelines from a petroleum refinery. The database consists of optical digital images taken from equipments exposed to marine atmosphere during their operational life. This new approach focuses on color and texture descriptors to accomplish corroded and noncorroded surface area discrimi...

Optimal Planning for Transportation of Petroleum Products via Pipe-line According to the Demand Time Window Minimizing Costs

The problem of minimizing sum-of-nonconvex functions (i.e., convex functions that are average of non-convex ones) is becoming increasingly important in machine learning, and is the core machinery for PCA, SVD, regularized Newton’s method, accelerated non-convex optimization, and more. We show how to provably obtain an accelerated stochastic algorithm for minimizing sumof-nonconvex functions, by...

Conveyor belts (CBs) are widely used for the continuous transport of bulk materials. CBs must be extremely reliable due to cost associated with their failure in production systems. Thus, it is highly relevant terms maintenance and planning find solutions reduce existing stoppages from these assets. In this sense, essential monitor collect real-time data piece equipment. This work presents a cas...

This investigation was prepared to evaluate productivity levels because in 2018 there were low rates due inadequate planning the manufacturing stages of a brewing industry, located city Ensenada, Baja California, Mexico. Starting 2019 and 2020, even with presence Covid19, increased. Said increase application lean tools, such as Value Flow Map (MFV), Kanban Kaizen, managing generate an efficient...