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Jidoka:   Detecting and preventing defects using the concept known as "autonomation." Automated processes are designed with the ability to stop completely upon detecting abnormalities that can lead to defects.

JIS Q 9100: An international quality management standard for the aerospace industry (see AS 9100).

Joint Committee for the Accreditation of Healthcare Organizations (JCAHO): JCAHO sets standards for, evaluates and accredits nearly 18,000 healthcare organizations and programs in the United States.

Juran, Joseph M.: The chairman emeritus of the Juran Institute and an ASQ Honorary Member. Since 1924, Juran has pursued a varied career in management as an engineer, executive, government administrator, university professor, labor arbitrator, corporate director and consultant. Specializing in managing for quality, he has authored hundreds of papers and 12 books, including Juran's Quality Control Handbook, Quality Planning and Analysis (with F. M. Gryna) and Juran on Leadership for Quality.

Juran trilogy: Three managerial processes identified by J.M. Juran for use in managing for quality: quality planning, quality control and quality improvement.

Just-in-time (JIT) manufacturing: An optimal material requirement planning system for a manufacturing process in which there is little or no manufacturing material inventory on hand at the manufacturing site and little or no incoming inspection.

Just-in-time training: The provision of training only when it is needed to all but eliminate the loss of knowledge and skill caused by a lag between training and use.  

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