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Showing 1 to 20 of 20 for “"fractional factorial design"”.
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Development of Ti-Si-N and Ta-Si-N as diffusion barriers
… with a variety of deposition parameters. A fractional factorial design (FFD) method was used to identify the significant deposition variables for the Ti-Si-N film deposition. The properties of the films as diffusion barriers between Cu and Si were studied using sheet resistance measurements, …
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Cattle Producer Motivations and Willingness to Participate in Industry Animal Welfare Program Verification
… sample of cattle producers. The survey was designed to determine specific producer demographics that would be inclined to participate, their opinions of the BQA program, and using fractional factorial design to assess what components of a program would most likely encourage producer …
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Evaluation of the Design of a Family Practice Healthcare Clinic Using Discrete-Event Simulation
… The research presented herein describes the design of the simulation model and details the analysis of the clinical environment. A methodology for determining appropriate staffing and physical resources in a clinical environment is presented. This methodology takes advantage of several …
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Development and gas permeation study of flat asymmetric polyphenylene oxide membranes.
… tested for CO$\sb2$/CH$\sb4$ separation. Using a fractional factorial design, a study of membrane casting conditions was completed in order to optimize the flux and the selectivity of the membrane. A membrane with a CO$\sb2$/CH$\sb4$ pure gas permeation rate ratio of 119 and a CO$\sb2$ permeation …
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ΜΕΛΕΤΗ ΠΡΟΣΔΙΟΡΙΣΜΟΥ ΕΝΩΣΕΩΝ ΥΔΡΑΡΓΥΡΟΥ ΜΕ ΤΗ ΦΑΣΜΑΤΟΜΕΤΡΙΑ ΑΤΟΜΙΚΗΣ ΑΠΟΡΡΟΦΗΣΗΣ ΨΥΧΡΟΥ ΑΤΜΟΥ ΚΑΙ ΒΕΛΤΙΣΤΟΠΟΙΗΣΗ ΜΕ ΠΑΡΑΓΟΝΤΙΚΟ ΣΧΕΔΙΑ...
… WAS ACHIEVED BY THE APPLICATION OF A COMPLETE FACTORIAL DESIGN, ANALYSIS OF VARIANCE OF RESULTS AND DETERMINATION OF OPTIMUM RESPONSE SURFACE BY MEANS OF ONE-AT-A-TIME EXPERIMENTS. IN THE SECOND CASE, THE OPTIMIZATION WAS DONE BY SUBSEQUENT USE OF FRACTIONAL FACTORIAL DESIGN, ANALYSIS OF …
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Heat transfer between a supernatant gas and a flowing shallow gas- fluidized bed of solids
… the S-gas and the shallow fluidized bed. A fractional-factorial design of experiments was performed on two heat-tray systems using three different results showed that fine fluid cracking catalyst (FCC) particles out-performed larger alumina spheres as a fluidized solid. Heat transfer …
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Affordances In The Design Of Virtual Environments
Human-computer interaction design principles largely focus on static representations and have yet to fully incorporate theories of perception appropriate for the dynamic multimodal interactions inherent to virtual environment (VE) interaction. Theories of direct perception, in particular affordance …
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An investigation into column flotation of South African coals
… using both one-variable-at-a-time testing and fractional factorial design experiments. An investigation into coal slurry conditioning using oil and oil-water dispersions was also undertaken. The results of laboratory and plant column testwork showed that it was possible to recover the desired …
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Understanding the relationship of lumber yield and cutting bill requirements: a statistical approach
… and cutting technology rather than cutting bill design. However, understanding the underlying physical phenomena of cutting bill requirements and yield is essential to improve lumber yield in rough mills. This understanding could also be helpful in constructing a novel lumber yield estimation …
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Bridging Machine Learning and Experimental Design for Enhanced Data Analysis and Optimization
Experimental design is a powerful tool for gathering highly informative observations using a small number of experiments. The demand for smart data collection strategies is increasing due to the need to save time and budget, especially in online experiments and machine learning. However, the …
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Conception of a flexible workpiece carrier to enable automated activities during transportation using a mobile manipulator
… that can be executed during travel time and to design and validate a workpiece carrier that supports these operations. The methodological foundation of the work followed the principles of design science research, combining theoretical analysis with artifact development and empirical evaluation. …
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Promoting material circularity in pulp and paper mills: organic-inorganic cellulosic composites for slow-release of nutrients
… type for the pellet. Thereafter, a 2(⁵¯²) fractional factorial design (FFD) screened five factors, including binder content, initial water content, hydraulic press pressure, CaCO₃ filler content, and coating solution concentration. A central composite design (CCD) was conducted using the …
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Computational Study of Parameters Affecting Electric Cabinet Fire Heat Release Rate
… matrices were developed and evaluated using fractional factorial Design of Experiments (DOE) to screen the importance of different parameters on the electric cabinet HRR. Based on statistical analysis of the results, the combustible material surface area was found to be the most significant …
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Scalable Micro/Nanostructured Surfaces for Thin-Film Condensation Heat Transfer Enhancement in Steam Power Plants
… treatment) or physical methods (e.g. structures design) have shown great promise in enhancing condensation heat transfer by promoting dropwise condensation. However, the short lifetime and high fabrication cost of most of these hydrophobic surfaces remain a challenge for long-term and large-scale …
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Unique cluster expansion for reliable first-principles prediction of alloy thermodynamics and phase diagrams
… (CE) has been developed to aid materials design and discovery for scientific and engineering applications. Using structural energies from first-principles electronic theory, an effective (CE) Hamiltonian that is suitable for large scale systems is constructed, enabling the calculation of …
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Targeting uptake of exercise-promoting structured patient education intervention: foundational research and process description of a discrete choice experiment to understand perceived intervention utility and design preferences for men with prostate cancer
Beyond effectiveness, critical aspects of the design process for complex healthcare interventions, including the organisation of the various independent components and features of the interventions or how they are presented to the users, can influence their overall uptake and long-term …
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Experimental Design and Analysis of Piezoelectric Synthetic Jets in Quiescent Air
… is dependent on the diaphragm and the cavity design hence, the focus of this work. The performance of the synthetic jet is studied under various factors related to the diaphragm and the cavity geometry. Four diaphragms, manufactured from piezoelectric composites, were selected for this study, …
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System integration and optimization of copper-chlorine thermochemical cycle with various options for hydrogen production
… cycle, a lab-scale CuCl electrolysis unit is designed, fabricated and tested. The influences of operational factors on the cell performance are then investigated. In the experiments, the effects of operating parameters, including HCl and CuCl concentrations, applied current density, …
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The Investigation of Primary and Secondary Modifiers in the Extraction and Separation of Neutral and Ionic Pharmaceutical Compounds with Pure and Modified Carbon Dioxide
… Therefore, a screening study consisting of a fractional-factorial design was performed in order to identify the factors which contribute most to the recovery of an anionic species, triphenylphosphinetrisulfonate (TPPTS), from a spiked-sand surface employing supercritical fluid extraction with …
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Enhancing CO2 mass transfer in algal raceway ponds through wave generation
… to CO2 gas sparging. Depending on the design, the slope can either act like a beach, to mimic the formation of shoaling ocean waves, or act like a weir to create a hydraulic jump. This study aimed to shed light on the effect of different slope parameters on the CO2 mass transfer rate, …