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Titolo:
MIXTURE DESIGNS FOR 4 COMPONENTS IN ORTHOGONAL BLOCKS
Autore:
DRAPER NR; LEWIS SM; JOHN PWM; PRESCOTT P; DEAN AM; TUCK MG;
Indirizzi:
UNIV WISCONSIN,DEPT STAT MADISON WI 53706 UNIV SOUTHAMPTON,DEPT MATH SOUTHAMPTON SO9 5NH HANTS ENGLAND UNIV TEXAS,DEPT MATH AUSTIN TX 78712 OHIO STATE UNIV,DEPT STAT COLUMBUS OH 43210 DALGETY FOOD TECHNOL CTR CAMBRIDGE CB1 2JN ENGLAND
Titolo Testata:
Technometrics
fascicolo: 3, volume: 35, anno: 1993,
pagine: 268 - 276
SICI:
0040-1706(1993)35:3<268:MDF4CI>2.0.ZU;2-M
Fonte:
ISI
Lingua:
ENG
Keywords:
D-CRITERION; LATIN SQUARES; 2ND-ORDER MODELS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
CompuMath Citation Index
Science Citation Index Expanded
Citazioni:
7
Recensione:
Indirizzi per estratti:
Citazione:
N.R. Draper et al., "MIXTURE DESIGNS FOR 4 COMPONENTS IN ORTHOGONAL BLOCKS", Technometrics, 35(3), 1993, pp. 268-276

Abstract

The problem of partitioning the blends (runs) of four mixture components into two orthogonal blocks when a quadratic model is fitted is considered. This is motivated by an industrial investigation of bread-making flours carried out at Spillers Milling Limited, a member of the Dalgety group of companies in the United Kingdom. The design solution proposed by John and described by Cornell is discussed and extended. Study of the characteristics of Latin squares of side 4 leads to reliablerules for quickly obtaining designs of specified kinds. One such design was selected for the experiment at Spillers Milling. Mixture-component values that cause singularity in the new designs are identified, and values that provide designs with highest D-criterion values are obtained for the class of designs discussed. Conveniently rounded, near-optimal mixture component values were chosen for the Spillers Milling experiment, and the analysis led to the prediction of an optimal flour mixture.

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Documento generato il 26/09/20 alle ore 04:02:24