Tuesday, January 3, 2012

little about Six-Sigma


Six Sigma – what does it mean?

Six Sigma at many organizations simply means a measure of quality that strives for near perfection. Six Sigma is a disciplined, data-driven approach and methodology for eliminating defects (driving toward six standard deviations between the mean and the nearest specification limit) in any process — from manufacturing to transactional and from product to service.


The statistical repretentation of Six Sigma describes quantitatively how a process is performing. To achieve Six Sigma, a process must not produce more than 3.4 defects per million opportunities. A Six Sigma defect is defined as anything outside of customer specifications. A Six Sigma opportunity is then the total quantity of chances for a defect. Process sigma can easily be calculated using a Six Sigma calculator.

The fundamental objective of the Six Sigma methodology is the implementation of a measurement-based strategy that focuses on process improvement and variation reduction through the application of Six sigma development project. This is accomplished through the use of two Six Sigma sub-methodologies: DMAIC and DMADV. The Six Sigma DMAIC process (define, measure, analyze, improve, control) is an improvement system for existing processes falling below specification and looking for incremental improvement. The Six Sigma DMADV process (define, measure, analyze, design, verify) is an improvement system used to develop new processes or products at Six Sigma quality levels. It can also be employed if a current process requires more than just incremental improvement. Both Six Sigma processes are executed by Six Sigma Green Belts and Six Sigma Black Belts, and are overseen by Six Sigma Master Black Belts.

According to the Six Sigma Academy, Black Belts save companies approximately $230,000 per project and can complete four to 6 projects per year. General Electric, one of the most successful companies implementing Six Sigma, has estimated benefits on the order of $10 billion during the first five years of implementation. GE first began Six Sigma in 1995 after Motorola and Allied Signal blazed the Six Sigma trail. Since then, thousands of companies around the world have discovered the far reaching benefits of Six Sigma.

Many frameworks exist for implementing the Six Sigma methodology. Six Sigma Consultants all over the world have developed proprietary methodologies for implementing Six Sigma quality, based on the similar change management philosophies and applications of tools.

Monday, January 2, 2012



THE SOLAR SYSTEM


The solar system is one of the most wonderful examples of this beautiful harmony to be witnessed. There are nine planets with fifty-four known satellites and an unknown number of smaller bodies. The major planets counting outward from the sun are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, and Pluto. Earth is the only one on which life is known to exist. It is surely the only one on which human beings can live and survive unaided thanks to abundant land and water and to a breathable atmosphere.
In the structure of the solar system, we encounter another beautiful example of equilibrium: the balance between a planet's centrifugal force countered by the gravitational attraction of its primary. (In astronomy, a primary is something that another body revolves about. Earth's primary is the sun; the moon's primary is Earth.) Without this balance, everything in the solar system would fly off into the chilling depths of outer space. The balance between these two forces results in paths (orbits) that the planets and other bodies follow around their primaries. If a body moved at too slow a speed, it would plunge into the primary; if it moved at too fast a speed, the primary would be unable to hold onto it, and it would fly off into space. Instead, every body moves at just the right speed to keep it in orbit. Moreover, this equilibrium has to be different for each body because the distance of planets to the sun differs. So do their masses. Therefore, they have to have different orbital speeds not to plunge into the sun or not to fly off into space.
Materialist astronomy holds that the origin and survival of the solar system can be explained by coincidence. Over the last three centuries, many of its adherents have speculated on how this marvelous order should have come to pass and they have failed to get anywhere. To a materialist, the equilibrium and order of the solar system are inexplicable mysteries.
Astronomers like Kepler and Galileo, among the first to discover this superlative equilibrium, acknowledged it as a deliberate design and a sign of divine intervention in the whole universe. Isaac Newton, recognized as one of the greatest scientific minds of all times, once wrote:
This most elegant system of suns, planets, and comets could arise from the purpose and sovereignty of an intelligent and mighty being…He rules them all, not as a soul but as a sovereign lord of all things, and because of His sovereignty He is commonly called "Lord God Almighty."1




sources :
http://www.creationofuniverse.com/html/order_skies_05.html