Browsing Technical Reports by Title
Now showing items 7-26 of 108
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Analysis of Unreplicated Factorials Allowing for Possibly Faulty Observations
(1987)Inaccurate data points are particularly troublesome in the analysis of unreplicated factorial experiments, but new techniques allow investigators to overcome this difficulty. -
Analysis of Unreplicated Split-Plot Experiments with Multiple Responses
(1995-07)The purpose of this study is to demonstrate an effective strategy for analyzing unreplicated split-plot experiments with multiple responses. Through principal component analysis (PCA) the response variables are reduced to ... -
The Anatomy and Robustness of Discrete Proportional -Integral Adjustment and Its Application to Statistical Process Control
(1996-04)This paper explains the nature and importance of Proportional-Integral control and shows how it may be adapted to Statistical Process Control. The relation of this type of control to exponential smoothing, minimum mean ... -
An Application of Box-Jenkins Methodology to the Control of Gluten Addition in a Flour Mill
(1990-08)The approach of Box and Jenkins was used to design a control algorithm for a feedback loop controlling the addition of dried gluten to breadmaking flour in a flour mill. The variations to be controlled were modeled by an ... -
An Application of Taguchi's Methods Reconsidered
(1990-07)Two aspects of Taguchi's methods for analyzing parameter design experiments that can be improved upon are considered. It is shown how using interaction graphs instead of marginal graphs, and how using the sample variance ... -
Assuring Product Success with ISO 9001?
(1994-07)Several research projects have been conducted, and several reports and books have been written with the hope of finding the factors important for successful new product development. This article compares the portions of ... -
Bringing Total Quality Improvement into the College Classroom
(1993-03)This paper describes a recent effort to infuse the Total Quality Improvement (TQI) approach, popularized by Deming and others, into an upper-division, junior-senior economics course at the University of Wisconsin-Madison. ... -
A Case Study of the Use of Experimental Design and Multivariate Analysis in Product Improvement
(1995-01)The overall purpose of this study is to identify an effective strategy for improving the sensory quality of a product. A study on processed cheese was used to develop and illustrate our ideas. A screening experiment, with ... -
Case Study: Experimental Design in a Pet Food Manufacturing Company
(1989-10)Experimentation in the complex world of industry and service organizations requires a deep understanding of the basic engineering concepts underlying the process being studied, as well as relevant technical and economic ... -
Charts for Optimal Feedback Control with Recursive Sampling and Adjustment
(1992-09)A cost model proposed by Box and Jenkins (1963) and later generalized by Box and Kramer (1992) for obtaining minimum cost for feedback control of processes is considered. Unfortunately, it is sometimes difficult to assign ... -
Charts With Variable Parameters
(1996-06)The idea of varying the chart parameters has been explored extensively in recent years. Basically, the value establishes if the control should be relaxed or not. When falls near the target the control is relaxed because ... -
Charts With Variable Sample Sizes and Sampling Intervals
(1995-09)Recent theoretical studies have shown that the chart with variable sampling intervals (VSI) and the chart with variable sample sizes (VSS) are quicker than the traditional chart for detecting shifts in a process. This ... -
Choice of Repeated and Bounded Adjustment Schemes
(1996)An important problem in process adjustment using feedback is how often to sample the process and when and by how much to apply an adjustment. Minimum-cost feedback schemes based on simple, but practically interesting, ... -
A Comparison of Dispersion Effect Identification Methods for Unreplicated Two-Level Factorials
(1995-10)Identifying factors that affect the variability of a process has become an important step in improving quality. Over the years many methods based on unreplicated two-level factorial experiments have been proposed for ... -
Compensation and Employment Security
(1993-06)Research by economists supports a couple of Japanese management practices that seem to have been underemphasized in many Total Quality implementation efforts in the US - lifetime employment and linking pay to the accomplishments ... -
Constrained Experimental Designs Part I: Construction of Projection Designs
(1990-10)Experimental design is a powerful tool for quality improvement. In some situations, however, the design variables are subject to multiple linear constraints. In this report, we propose a class called projection designs ... -
Constrained Experimental Designs Part II: Analysis of Projection Designs
(1990-10)In this report, we discuss the analysis of projection designs proposed in Report #53. We show that analyzing projection designs is essentially the same as analyzing some traditional unconstrained designs such as factorial ... -
Constrained Experimental Designs Part III: Steepest Ascent and Properties of Projection Designs
(1990-10)Steepest ascent is an important tool for process improvement. This report discusses how to use the steepest ascent method in the context of constrained designs. The properties of the projection designs proposed in Report ... -
A Contour Nomogram for Designing Cusum Charts for Variance
(1989-02)A contour nomogram is given that helps in the design of cumulative sums charts for variance when the observations are normally distributed. -
A Critical Look at Accumulation and Related Methods
(1986-11)Using accumulation analysis on ordered categorical data can often result in the detection of spurious effects.