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Split-Plot Central Composite Designs Robust to a Pair of Missing Observations
Journal of Applied Sciences and Environmental Management, 2018 This study constructs robust split-plot central composite designs against missing pairs of observations. Split-plot central composite designs (CCD) consist of factorial (f), whole-plot axial (α), subplot axial (β), and center (c) points. A loss function
Y. Yakubu, AU Chukwu
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The effect of ethanol on potato growth and production at moderate elevation
Research in Agricultural Engineering, 2022 Indonesia's current potato cultivation areas are mainly in the highlands (1 000 m above sea level - a.s.l.). However, there are obstacles to potato cultivation in the highlands, including erosion, declining land productivity, limited area, and high ...
Andi Muhibuddin +5 more
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Split-plot designs: What, why, and how [PDF]
, 2009 The past decade has seen rapid advances in the development of new methods for the design and analysis of split-plot experiments. Unfortunately, the value of these designs for industrial experimentation has not been fully appreciated.
Bradley Jones, Christopher J. Nachtsheim
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Effects of Process Parameters in the Production of High Density Polyethylene-Grass Composite
Journal of Applied Sciences and Environmental Management, 2018 This study investigates the effects of process parameters in the production of high density polyethylene-grass composite; the process parameters and their interaction on the mechanical properties of the produced high density polyethylene-grass composite
DD Olodu, JO Osarenmwinda
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Selection and Screening Procedures to Determine Optimal Product Designs. (REVISED, April 1997) [PDF]
, 1996 To compare several promising product designs, manufacturers must measure their performance under multiple environmental conditions. In many applications, a product design is considered to be seriously flawed if its performance is poor under any level of
Pan, Guohua, Santner, Thomas J.
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Ziraa'ah: Majalah Ilmiah Pertanian, 2016 The reaserch was conducted to analizies the interaction of the responsibilities of varieties, N and chicken manure fertillizer, analizies of varieties treatment, analizies dosage of N and chicken manure fertilizer to growth, yield an quality of kenaf ...
Hadi Pranoto
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Influence of row spacing reduction on maize grain yield in regions with a short summer [PDF]
Pesquisa Agropecuária Brasileira, 2001 The interest in reducing maize row spacing in the short growing season regions of Brazil is increasing due to potential advantages such as higher radiation use efficiency.
Luís Sangoi +4 more
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Journal of Applied Sciences and Environmental Management, 2021 The trace (A), maximum average prediction variance (G), and integrated average prediction variance (V) criteria are experimental design evaluation criteria, which are based on precision of estimates of parameters and responses. Central Composite Designs(
Y. Yakubu, A.U. Chukwu
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Journal of Biological Research, 2020 Two consecutive field experiments were conducted during the period from October 2013 and 2014 to April 2014 and 2015 to show the effect of split application of nitrogen (SN) and boron (B) on hybrid TPS.
Rajesh Chakraborty
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GCB Bioenergy, 2023 Biochar and manure can be used for sustainable land management. However, little is known about how soil amendments might affect surface and belowground microbial processes and subsequent wood decomposition.
Ruirui Zhao +2 more
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