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Lean Dynamics
Lean dynamics is a business management practice that emphasizes the same primary outcome as lean manufacturing or lean production of eliminating wasteful expenditure of resources. However, it is distinguished by its different focus of creating a structure for accommodating the dynamic business conditions that cause these wastes to accumulate in the first place. Like lean manufacturing, lean dynamics is a variation on the theme of creating efficiencies and greater value by optimizing flow rather than by maximizing economies of scale. As such, it represents an important chapter in the broader discussion of Taylorism, Fordisim, Alfred Sloan's standard volume methodology, Peter Drucker's philosophy on the "theory of the business" and Genichi Taguchi's analysis of loss. Its general philosophy has grown in popularity over recent years, in large part because of the increasingly challenging circumstances faced by the global business world (particularly evident during the 2008–2009 wor ...
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Lean Manufacturing
Lean manufacturing is a methods of production, method of manufacturing goods aimed primarily at reducing times within the Operations management#Production systems, production system as well as response times from suppliers and customers. It is closely related to another concept called just-in-time manufacturing (JIT manufacturing in short). Just-in-time manufacturing tries to match production to Supply and demand, demand by only supplying goods that have been ordered and focus on efficiency, productivity (with a commitment to continuous improvement), and reduction of "wastes" for the producer and supplier of goods. Lean manufacturing adopts the just-in-time approach and additionally focuses on reducing Cycle time variation, cycle, flow, and Throughput (business), throughput times by further eliminating activities that do not add any Value (economics), value for the customer. Lean manufacturing also involves people who work outside of the manufacturing process, such as in marketi ...
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Taguchi Loss Function
The Taguchi loss function is graphical depiction of loss developed by the Japanese business statistician Genichi Taguchi to describe a phenomenon affecting the value of products produced by a company. Praised by Dr. W. Edwards Deming (the business guru of the 1980s American quality Quality may refer to: Concepts *Quality (business), the ''non-inferiority'' or ''superiority'' of something *Quality (philosophy), an attribute or a property *Quality (physics), in response theory *Energy quality, used in various science discipli ... movement), it made clear the concept that quality does not suddenly plummet when, for instance, a machinist exceeds a rigid blueprint tolerance. Instead 'loss' in value progressively increases as variation increases from the intended condition. This was considered a breakthrough in describing quality, and helped fuel the continuous improvement movement. The concept of Taguchi's quality loss function was in contrast with the American concept of quali ...
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Workcell
A workcell is an arrangement of resources in a manufacturing environment to improve the quality, speed and cost of the process. Workcells are designed to improve these by improving process flow and eliminating waste. They are based on the principles of Lean Manufacturing as described in '' The Machine That Changed the World'' by Womack, Jones and Roos.''Machine That Changed the World'', James P. Womack, Daniel T. Jones, Daniel Roos, HarperBusiness, 1991, History Classical manufacturing management approaches dictate that costs be lowered by breaking the process into steps, and ensuring that each of these steps minimizes cost and maximizes efficiency. This discrete approach has resulted in machines placed apart from each other to maximize the efficiency and throughput of each machine. The traditional accounting for machine capitalization is based on the number of parts produced, and this approach reinforces the idea of lowering the cost of each machine (by having them produce as ma ...
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Muri (Japanese Term)
is a Japanese word meaning "unreasonableness; impossible; beyond one's power; too difficult; by force; perforce; forcibly; compulsorily; excessiveness; immoderation",''Kenkyusha's New Japanese-English Dictionary'' (2003), 5th edition, Tokyo: Kenkyusha, p. 2537. and is a key concept in the Toyota Production System (TPS) as one of the three types of waste ('' muda'', '' mura'', ''muri''). A direct example of Muri is asking workers to stay focused for a period exceeding 8 hours a day or expecting a machine to produce more than it can in a given time. Some of the most common reasons why production systems experience overburdening: * Unmeasured system capacity, despite assigning production expectations in set numbers * A suboptimal technical condition of used machines, or untrained staff * Poor communication across the team and manager Avoidance of muri in Toyota manufacturing Muri is one of three types of waste ( muda, mura, muri) identified in the Toyota Production System. Wa ...
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Mura (Japanese Term)
is a Japanese word meaning "unevenness; irregularity; lack of uniformity; nonuniformity; inequality", and is a key concept in the Toyota Production System (TPS) as one of the three types of waste ('' muda'', ''mura'', '' muri''). Waste in this context refers to the wasting of time or resources rather than wasteful by-products and should not be confused with waste reduction. Toyota adopted these three Japanese words as part of their product improvement program, due to their familiarity in common usage. ''Mura'', in terms of business/process improvement, is avoided through just-in-time manufacturing systems, which are based on keeping little or no inventory. These systems supply the production process with the right part, at the right time, in the right amount, using first-in, first-out (FIFO) component flow. Just-in-time systems create a "pull system" in which each sub-process withdraws its needs from the preceding sub-processes, and ultimately from an outside supplier. When ...
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Production Leveling
Production leveling, also known as production smoothing or – by its Japanese original term – , is a technique for reducing the mura (unevenness) which in turn reduces muda (waste). It was vital to the development of production efficiency in the Toyota Production System and lean manufacturing. The goal is to produce intermediate goods at a constant rate so that further processing may also be carried out at a constant and predictable rate. Where demand is constant, production leveling is easy, but where customer demand fluctuates, two approaches have been adopted: 1) ''demand leveling'' and 2) ''production leveling'' through flexible production. To prevent fluctuations in production, even in outside affiliates, it is important to minimize fluctuation in the final assembly line. Toyota's final assembly line never assembles the same automobile model in a batch. Instead, they level production by assembling a mix of models in each batch and the batches are made as small as possi ...
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Statistical Process Control
Statistical process control (SPC) or statistical quality control (SQC) is the application of statistics, statistical methods to monitor and control the quality of a production process. This helps to ensure that the process operates efficiently, producing more specification-conforming products with less waste scrap. SPC can be applied to any process where the "conforming product" (product meeting specifications) output can be measured. Key tools used in SPC include run charts, control charts, a focus on Continuous Improvement Process, continuous improvement, and Design of experiments, the design of experiments. An example of a process where SPC is applied is manufacturing lines. SPC must be practiced in two phases: the first phase is the initial establishment of the process, and the second phase is the regular production use of the process. In the second phase, a decision of the period to be examined must be made, depending upon the change in 5M&E conditions (Man, Machine, Materia ...
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Six Sigma
Six Sigma (6σ) is a set of techniques and tools for process improvement. It was introduced by American engineer Bill Smith while working at Motorola in 1986. Six Sigma strategies seek to improve manufacturing quality by identifying and removing the causes of defects and minimizing variability in manufacturing and business processes. This is done by using empirical and statistical quality management methods and by hiring people who serve as Six Sigma experts. Each Six Sigma project follows a defined methodology and has specific value targets, such as reducing pollution or increasing customer satisfaction. The term ''Six Sigma'' originates from statistical quality control, a reference to the fraction of a normal curve that lies within six standard deviations of the mean, used to represent a defect rate. History Motorola pioneered Six Sigma, setting a "six sigma" goal for its manufacturing business. It registered Six Sigma as a service mark on June 11, 1991 (); on December 28, ...
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JAG (TV Series)
''JAG'' (United States Armed Forces, U.S. military acronym for Judge Advocate General's Corps, Judge Advocate General) is an American legal drama television series with a U.S. Navy theme, created by Donald P. Bellisario and produced by Belisarius Productions in association with Paramount Network Television (now CBS Studios).. From the Paramount website, through archive.org. Retrieved on 2015-03-22. The series originally aired on NBC for one season from September 23, 1995, to May 22, 1996, and then on CBS for an additional nine seasons from January 3, 1997, to April 29, 2005. The first season was co-produced with NBC Productions (now Universal Television) and was originally perceived as a ''Top Gun'' meets ''A Few Good Men'' hybrid series.Neal Karlen, Karlen, Neal.COVER STORY;From the Man Behind 'Magnum, P.I.,' 'Top Gun' Meets 'A Few Good Men'", ''The New York Times'' (November 5, 1995) In the spring of 1996, NBC cancelled the series after it finished 79th in the ratings, leaving ...
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Muda (Japanese Term)
is a Japanese word meaning "futility", "uselessness", or "wastefulness", and is a key concept in lean process thinking such as in the Toyota Production System (TPS), denoting one of three types of deviation from optimal allocation of resources. The other types are known by the Japanese terms '' mura'' ("unevenness") and '' muri'' ("overload"). Waste in this context refers to the wasting of time or resources rather than wasteful by-products and should not be confused with waste reduction. From an end-customer's point of view, value-added work is any activity that produces goods or provides a service for which a customer is willing to pay; ''muda'' is any constraint or impediment that causes waste to occur. There are two types of muda: * ''Muda'' type I: non value-adding, but necessary for end-customers. These are usually harder to eliminate because while classified as non-value adding, they may still be necessary. * ''Muda'' type II: non value-adding and unnecessary for end ...
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F-35 Lightning II
The Lockheed Martin F-35 Lightning II is an American family of single-seat, single-engine, supersonic Stealth aircraft, stealth strike fighters. A multirole combat aircraft designed for both Air superiority fighter, air superiority and attack aircraft, strike missions, it also has electronic warfare and intelligence, surveillance, and reconnaissance capabilities. Lockheed Martin is the prime F-35 contractor with principal partners Northrop Grumman and BAE Systems. The aircraft has three main variants: the CTOL, conventional takeoff and landing (CTOL) F-35A, the STOVL, short take-off and vertical-landing (STOVL) F-35B, and the carrier-based, carrier variant (CV) Catapult Assisted Take-Off But Arrested Recovery, catapult-assisted take-off but arrested recovery (CATOBAR) F-35C. The aircraft descends from the Lockheed Martin X-35, which in 2001 beat the Boeing X-32 to win the Joint Strike Fighter program, Joint Strike Fighter (JSF) program intended to replace the General Dynami ...
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Taguchi Methods
Taguchi methods () are statistical methods, sometimes called robust design methods, developed by Genichi Taguchi to improve the quality of manufactured goods, and more recently also applied to engineering, biotechnology, marketing and advertising. Professional statisticians have welcomed the goals and improvements brought about by Taguchi methods, particularly by Taguchi's development of designs for studying variation, but have criticized the inefficiency of some of Taguchi's proposals. Taguchi's work includes three principal contributions to statistics: *A specific loss function *The philosophy of ''off-line quality control''; and *Innovations in the design of experiments. Loss functions Loss functions in the statistical theory Traditionally, statistical methods have relied on mean-unbiased estimators of treatment effects: Under the conditions of the Gauss–Markov theorem, least squares estimators have minimum variance among all mean-unbiased linear estimators. The emphasis ...
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