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What is quality -- the experts opinion

作者：未知 来源：月光软件站 加入时间：2005-2-28　月光软件站

What is quality -- the experts opinion

“Only through the collective efforts of their individual
members do companies change; companies are
incapable of changing themselves.”
-- V. Daniel Hunt

 This question has been debated for many years and varies considerably even with the quality experts (as outlined in the comparison tables below).  For certain, the experts agree, the outcome affects all businesses today and will continue to do so in the future.

(note: this comparison was originally based on
an article published in the "Quality" magazine, May 1992)

Table 1 - A comparison of Deming, Juran, and Crosby
W. Deming
J.M. Juran
P. Crosby
Basic orientation toward quality Technical Process Motivational
What is quality? Nonfaulty systems Fitness for use; freedom from trouble Conformance to requirements
Who is responsible for quality? Management Management Management
Importance of customer requirements as standard Very important Very important; customers at each step of product life cycle Very important
Goal of quality Meet/exceed customer needs; continuous improvement Please customer; continuous improvement Continuous improvement; zero defects
Methods for achieving quality Statistical; constancy of purpose; continual improvement; cooperation between functions Cost of quality; quality trilogy: planning, control, improvement 14-point framework;
Chief elements of implementation 14-point program Breakthrough projects; quality council; quality teams 14-step program; cost of quality; quality management "maturity grid"
Role of training Very important for managers and workers Very important for managers and employees Very important for managers and employees
For additional details, see web site: The W. Edwards Deming Institute Juran Institute Philip Crosby Associates II

Table 2 - A comparison of Garvin, Felgenbaum, and Taguchi

D. Garvin
A.V. Felgenbaum
G. Taguchi
Basic orientation toward quality Strategic, academic Total, systemic Technical, proactive
What is quality? Competitive opportunity What customer says it is Customer's performance requirements
Who is responsible for quality? Management Everyone Engineers
Importance of customer requirements as standard Very important Very important Very important
Goal of quality Pleasing customers; continuous improvement Meet customer needs; continuous improvement Meet customer requirements; continuous improvement
Methods for achieving quality Identifying quality niches Total quality control (TQC); excellence-driven rather than defect-driven Statistical methods such as Loss Function; eliminating variations of design characteristics and "noise" through robust design and processes
Chief elements of implementation Eight dimensions of product quality: performance, features, reliability,
conformance, durability, serviceability, aesthetics, perceived quality		 Statistical and engineering methods across the company Statistical design of experiments; quality teams
Role of training Important but not clearly defined Very important for managers and supervisors Important but not defined
For additional details, see web site:
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