Iterated local search (ILS) is a general and powerful metaheuristic which provides an easily implementable way of improving the performance of local search algorithms. In this article we consider the application of ILS to the permutation flow shop problem (FSP), a strongly studied problem in machine scheduling. We experimentally investigate the effect of specific implementation choices in our I...

We give a new construction for the n-th Taylor polynomial, in the sense of Goodwillie calculus, for homotopy functors from spectra to spectra. We then use this model to classify n-excisive functors of module categories of functors with smash product (FSPs) by bi-modules of explicit FSPs. Introduction: In [Cal3], T. Goodwillie constructs a Taylor tower for functors from spectra to spectra. The l...

Abstract TIG welded marine grade AA5083-F/ER5356 and AA5083-F/ER5356+Sc joints were friction stir processed with a pin less FSP tool, to explore the impact of process parameters on mechanical metallurgical characteristics weldments enhance weld strength. The microstructure welds was observed using optical SEM subjected tests like toughness, tensile, microhardness fractography, evaluate strength...

La0.6Ca0.2Fe0.8Cu0.2O3, undoped (LF) and Ca, Cu-doped (LCFC), powders, obtained by different industrial procedures, are compared to evaluate reproducibility scale-up in synthetic approaches: flame spray pyrolysis (FSP) coprecipitation (COP). Also the effects of varying composition (doping) FSP process variability considered as comparative studies on morphological, crystallographic, redox compos...

In the present study, the effect of material and process parameters on the morphological and hardness properties of friction stir process (FSP) acrylonitrile butadiene styrene (ABS) were investigated. For this purpose, firstly ABS polymeric sheets were injection molded. Then a slot with predetermined depth and width was created on sheets using a horizontal milling machine. Nano type (nanoclay, ...

the friction stir process (fsp) is a solid state process, which has been used to insert reinforcing particles into the structure of a material to create a composite with improved properties. magnesium is a light structural metal that is increasingly used in the aerospace and automobile industries. in this research, sic nanoparticles were added to az31 alloy using fsp in two overlaps of 100% and...

Magnesium alloy composites play an important role in the biomaterials field. In this study, a novel Mg-Zn-Ca matrix composite was reinforced by adding 1.0 wt.% MgO nanoparticles via high shear casting process. Hereafter, friction stir processing (FSP) used to achieve good dispersion of particles and improve mechanical properties composites. After preparation materials, varied characterization p...

BACKGROUND Dairy cows have a massive demand for glucose at the onset of lactation. A poor adaption to this period leads to an excessive negative energy balance with an increased risk for ketosis and impaired animal health and production. Besides the measurement of ketones, analysing the glucose concentration in blood is reported as helpful instrument for diagnosis and differentiation of ketosis...

Abstract The strength and wear resistance of aluminium alloys must be improved to enhance their usage in lightweight constructions. Thus, this study, graphene nanoplates (GNPs) boron nitride (BN) nanoparticles were reinforced into the Al 5251 alloy by friction stir processing (FSP). aluminum sheets patterned with holes filled mono GNPs, BN a hybrid GNPs. microstructure, wear, mechanical propert...