The steelmaking process consists of two phases: primary steelmaking and finishing lines. The scheduling of the continuous galvanizing lines (CGL) is regarded as the most difficult process among the finishing lines due to its multi-objective and highlyconstrained nature. In this paper, we present a multi-population parallel genetic algorithm (MPGA) with a new genetic representation called k near...

Full grain leather refers to the strongest and most durable part of cattle hide, consisting layer underlying corium, has not been sanded or buffed remove any imperfections, that means it displays more natural characteristics leather. Leather quality changes with sampling location, depending on variation present in fibrous structure. properties were also affected by tanning finishing processes u...

The shoulder of a packaging machine is a developable surface that guides the packing material without stretching or tearing. The shoulder is traditionally manufactured by bending a flexible plate along a given bending curve, also without stretching ortearing. In this paper, the shoulder geometry isdescribed mathematically b methods from classical differential geometry. For a given bending curve...

the vibratory finishing is one of the important mass finishing processes. this can be applied for finishing many metallic and non- metallic components using abrasive materials such as steel, ceramic, natural materials and etc. the vibratory finishing process is used for some purposes such as surfaces polishing, deburring, oxide layer removing and rounding the edges. evaluation of surface roughn...

The positive and negative terrains (P–N terrains) of the Loess Plateau China are important geographical topography elements for measuring degree surface erosion distinguishing types landforms. shoulder-lines an terrain feature in often used as a criterion P–N terrains. extraction shoulder lines is predicting recognising gully head. However, existing algorithms loess areas with insignificant slo...

Building on mode-coupling-theory calculations, we report a novel scenario for multiple glass transitions in a purely repulsive spherical potential: the square shoulder. The liquid-glass transition lines exhibit both melting by cooling and melting by compression as well as associated diffusion anomalies, similar to the ones observed in water. Differently from all previously investigated models, ...

Correspondence to: Edson Hilgert Rua Francisco Paes, 31, apto. 22 Centro São José dos Campos CEP 12210-100 São Paulo Brazil Phone: +055 012 39227621 E-mail:[email protected] Abstract This study evaluates the marginal adaptation of ceramic copings front of two finish lines and addition of ceramic. Hence, two master steel dies were milled with all-ceramic crowns preparation, one with a round sho...

This study presents a reduction of production disturbances of a shoemaking industry through discrete event simulation approach. The study is conducted at Peacock Shoe factory found in Addis Ababa, Ethiopia.  This factory faces line balancing problem that becomes production disturbance for its assembly lines. Detail time study is carried out for the selected shoe model using stopwatch. Assembly ...