Browsing Technical Reports by Title
Now showing items 69-88 of 108
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Projective Properties of Certain Orthogonal Arrays
(1996)The projective properties of two-level orthogonal array designs are important in factor screening. General results are given which, in particular, allow the designs derived by Plackett and Burman to be categorized in terms ... -
Quality Engineering and Taguchi Methods: A Perspective
(1990)Robust product design and parameter design - methods to develop products that will perform well regardless of changes in uncontrollable environmental conditions or that are insensitive to component variation - are key ... -
Quality Improvement at the Design Stage- A Cyclic Incremental Approach
(1991-05)Quality control based on inspection and segregation is uneconomical and inefficient. To be effective, quality needs to be considered and planned at the product design stage. In this article we put what seems like detailed ... -
Quality in the Public Sector: The Employees' Perspective
(1999-05)This study investigated the effects of the implementation of quality in a public service organization on employees' strain and satisfaction -
Quality Quandaries - Regression Analysis Applied to Happenstance Data
(1996-10)Care is needed in interpreting results when regression analysis is applied to happenstance data. Although a fitted regression model may be useful for prediction of future values of a series, it may be totally misleading ... -
Quality Quandaries-Proposals: A Mechanism for Achieving Better Experiments
(1998-10)In this paper we outline how a simple procedure of requesting a proposal before management signs off on an experiment can dramatically improve the effectiveness of experimenters. An eleven step process is provided. -
Quality Quandaries-Use of Cusum Statistics in the Analysis of Data and in Process Monitoring
(1998-10)The uses of the Cusum Chart are discussed. It can be used for on-line monitoring of an operating process or for post-mortem analysis of data. The Cusum statistic is discussed as a particular example of a Cuscore statistic ... -
Quality Quandries-Six Sigma, Process Drift, Capability Indices, and Feedback Adjustment
(1999-08)The Six Sigma specification makes an allowance of 1.5 standard deviations for process drift. Simple ways in which a major part of such drift can be removed are given. These employ feedback adjustment methods specifically ... -
Red Team Performance: Summary of Findings
(2004-06)This report summarizes a study the performance of the red team program at Sandia National Laboratories. This study describes the factors that contribute to and hinder red team performance, as well as various measures of ... -
Redesigning the Introductory Statistics Course
(1995)There is general agreement that the traditional statistics course does not meet the needs of customer groups such as students and their future employers. While positive reform efforts are under way, many appear to be based ... -
Reducing Workload and Increasing Patient Safety Through Work and Workspace Design
(2003-11)This paper was commissioned by the Institute of Medicine Committee on the Work Environment for Nurses and Patient Safety. It was used by the IOM for its report on Keeping Patients Safe - Transforming the Work Environment ... -
Retargeting Higher Education Access and Persistence Efforts: Illustrating a 'System' Focused Process for Improving Public Policy
(1999-07)This paper illustrates a "systems" approach, based on the quality function deployment model, to examine both the direct and interaction effects of multiple solutions aimed at improving access and persistence. -
Robust Product Designs, Part I: First-Order Models with Design x Environment Interactions
(1990)In this paper we apply the strategy developed in Report 56 to a simple first-order model with interactions between the design and the environmental factors. For this model we derive the robustness measure and give a series ... -
Robust Product Designs, Part II: Second-Order Models
(1990-05)In this paper we apply the strategy developed in Report 56 to a general second-order model. For this model we derive the robustness measure and give a series of tables of designs that are appropriate for the possible ... -
Robust Product Designs, Part III: Second-Order Models with Additional Third-Order Terms
(1990-05)In this paper we apply the strategy developed in Report 56 to a general second-order model with additional third-order terms. For this model we derive the robustness measure and give a series of tables of designs that are ... -
The Role of Scientific Problem Solving and Statistics in Quality Improvement: Some Perspectives
(1997-04)Scientific method of observation and experimentation play a key role in quality improvement. In this article, I provide numerous examples of the use of scientific method and argue that this a vital catalyst for Total ... -
Role of Statistics in Quality Control
(1993-06)The role of Statistics in Quality Systems depends on certain philosophical issues which the author believes have been inadequately addressed. Three such issues are the role of statistics in the process of discovery, the ... -
Scientific Statistics, Teaching, Learning and the Computer
(1996-06)It is argued that the domination of Statistics by Mathematics rather than by Science has greatly reduced the value and the status of the subject. The mathematical "theorem - proof paradigm" has supplanted the "iterative ... -
Sequential Methods in Statistical Process Monitoring, Chapter 1: Introduction and Chapter 2: Sequential Monitoring of Variances
(1991-05)A CUSUM chart to monitor variability, based on the Wald-Barnard likelihood ratio test, is introduced. A nomogram to aid in the construction of the charts is also presented. -
Sequential Methods in Statistical Process Monitoring, Chapter 3: Design of CUSUM Charts
(1991-05)In this report we show how to design CUSUM charts to monitor process variability. An eight step outline for the implementation of these charts is included.