Abstract Line-implicit preconditioners are well known in computational fluid dynamics (CFD) solvers and an essential component to handle meshes with cells of very high aspect ratio (> 1000:1). Such anisotropic commonly used resolve steep gradients the boundary layer a turbulent flow Reynolds number. To date, this technique has rarely been solve other partial differential equations. We show t...

This paper presents a new mathematical programming model for the bi-criteria mixed-model assembly line balancing problem in a just-in-time (JIT) production system. There is a set of criteria to judge sequences of the product mix in terms of the effective utilization of the system. The primary goal of this model is to minimize the setup cost and the stoppage assembly line cost, simultaneously. B...

In this study, we utilized digital twin technology in combination with genetic algorithms to optimize human–robot cooperation a miniature light bulb assembly production line. First, the was used find robot’s motion trajectory; replica of system and human created by combining sensors that track position activity characteristics workspace, which helped prevent conflicts. Then, multi-adaptive algo...

This paper presents a multi-objective simulated annealing algorithm for the mixed-model assembly line balancing with stochastic processing times. Since, the stochastic task times may have effects on the bottlenecks of a system, maximizing the weighted line efficiency (equivalent to the minimizing the number of station), minimizing the weighted smoothness index and maximizing the system reliabil...

This paper presents a nonlinear mixed-integer programming model to minimize the stoppage cost of mixed-model assembly lines. Nowadays, most manufacturing firms employ this type of line due to the increasing varieties of products in their attempts to quickly respond to diversified customer demands. Advancement of new technologies, competitiveness, diversification of products, and large customer ...

Vertically aligned, supercrystalline microplates with a well-defined rectangular shape were fabricated in a large area through self-assembly of gold nanorods by a novel bulk solution evaporation method. This evaporative self-assembly strategy involving continuous movement of the contact line can prevent the coffee-ring effect, thus allowing uniform deposition of discrete GNR superstructures ove...