The purpose of this research is to determine the empirical model for surface roughness in a turning process. This process is performed in the final assembly department at a manufacturing company which supplies fluid dynamic bearing (FDB) spindle motors for hard disk drives (HDDs). The workpieces used were the sleeves of FDB motors made of ferritic stainless steel, grade AISI 12L14. A 2 factoria...

1. APPLICATION OF FULL FACTORIAL DESIGN IN THE MEASUREMENT OF DRYING RATES OF A ROTARY DRYER Drying is a physical separation process which enables to remove the liquid phase from a solid, semisolid or liquids by means of thermal energy. The aim of the experiment is to observe how various operational parameters affect the drying process in a rotary dryer. In drying process, heat is transferred b...

the experiment was done in a factorial design based on completely randomized with three factors and five replications in vitro. the first factors, plant extract (nine plant species), the second factor, solvent (5 solvent) and the third factor, concentration (3 concentration) were considered. in pot condition, the experiment was carried out in factorial based on completely randomized design with...

A factorial experiment was designed to test under different feeding levels the effects of the surgical deprivation of sensory afferences (deafferentation) arising from the gastrointestinal tract, including the intestinal chemosensitivity, on the jejunectomised pig used as a model. Within 28 days, the limited jejunectomy failed to affect the pancreas and the enzyme activities were not affected b...

Contemporary models of audiovisual speech perception attempt to explain accuracy data based on curve fitting and optimization techniques (see Braida, 1991; Massaro, 1987). Research on audiovisual speech perception lacks a formal mathematical foundation because current models do not make predictions about reaction time or adequately describe how the audio and visual channels are processed in the...

A multimodal problem generator was used to test three versions of genetic algorithm and the binary particle swarm algorithm in a factorial time-series experiment. Specific strengths and weaknesses of the various algorithms were identified.

The first experiment evaluated the effects of feeding various levels of Se, two Se sources, and hair color on selenosis responses in growing-finishing pigs. The study conducted in two replicates was a 2 x 6 x 2 factorial arrangement in a split-plot design. Sodium selenite and Se-enriched yeast added at 0.3, 1, 3, 5, 7, and 10 ppm Se served as the main plot and pig hair color as the subplot. A t...