Operation Sigma Sigma

The Sigma is an experimental glider developed in Britain from 1966 by a team led by Nicholas Goodhart. After disappointing performance during flight testing the Sigma was passed on to a Canadian group which carried out modifications, making the Sigma more competitive.

Design and development

Designed to compete in the 1970 World Championships, the team aimed to develop a wing that would climb well through a high lift coefficient and a large wing area, but equally had the "maximum possible reduction of area for cruise at low lift coefficients". At the same time for the minimum possible drag they aimed for "extensive" laminar flow. To achieve this they employed flaps that would alter both wing area and wing camber. Based on analysis of the nature of thermals encountered in cross-country flying, they reasoned that by having a slow turning circle, their sailplane could stay close to the central (and strongest) part of the thermal and gain maximum benefit.

Its unusual feature is its ability to vary its wing area using Fowler flaps. It had been tried before by the Hannover Akaflieg in 1938 with their AFH-4, the South African Beatty-Johl BJ-2 Assegai and the SZD Zefir gliders.

Sigma baryon

The Sigma baryons are a family of subatomic hadron particles which have a +2, +1 or −1 elementary charge or are neutral. They are baryons containing three quarks: two up and/or down quarks, and one third quark, which can be either a strange (symbols Σ+, Σ0, Σ−), a charm (symbols Σ++
c, Σ+
c, Σ0
c), a bottom (symbols Σ+
b, Σ0
b, Σ−
b) or a top (symbols Σ++
t, Σ+
t, Σ0
t) quark. However, the top Sigmas are not expected to be observed as the Standard Model predicts the mean lifetime of top quarks to be roughly 6975500000000000000♠5×10⁻²⁵ s. This is about 20 times shorter than the timescale for strong interactions, and therefore it does not form hadrons.

List

The symbols encountered in these lists are: I (isospin), J (total angular momentum), P (parity), u (up quark), d (down quark), s (strange quark), c (charm quark), t (top quark), b (bottom quark), Q (charge), B (baryon number), S (strangeness), C (charmness), B′ (bottomness), T (topness), as well as other subatomic particles (hover for name).

Six Sigma

Six Sigma is a set of techniques and tools for process improvement. It was introduced by engineer Bill Smith while working at Motorola in 1986.Jack Welch made it central to his business strategy at General Electric in 1995. Today, it is used in many industrial sectors.

Six Sigma seeks to improve the quality of the output of a process by identifying and removing the causes of defects and minimizing variability in manufacturing and business processes. It uses a set of quality management methods, mainly empirical, statistical methods, and creates a special infrastructure of people within the organization, who are experts in these methods. Each Six Sigma project carried out within an organization follows a defined sequence of steps and has specific value targets, for example: reduce process cycle time, reduce pollution, reduce costs, increase customer satisfaction, and increase profits.

The term Six Sigma originated from terminology associated with statistical modeling of manufacturing processes. The maturity of a manufacturing process can be described by a sigma rating indicating its yield or the percentage of defect-free products it creates. A six sigma process is one in which 99.99966% of all opportunities to produce some feature of a part are statistically expected to be free of defects (3.4 defective features per million opportunities). Motorola set a goal of "six sigma" for all of its manufacturing operations, and this goal became a by-word for the management and engineering practices used to achieve it.

Happy (disambiguation)

To be happy is to experience happiness: a feeling of contentment or joy.

Happy may also refer to:

Film and television

Music

Bands

Albums

Songs

Happy (Michael Jackson song)

"Happy" is a song recorded by Michael Jackson for the Motown label in 1973. The song featured on Jackson's album Music & Me. Its full title is "Happy (Love Theme from Lady Sings the Blues)", although it was never featured in the film or the soundtrack for Lady Sings the Blues. The song was released as a single in Australia, backed by "In Our Small Way".

Jackson continued to perform the track in concert as late as 1977, citing it as one of his favorite songs.

The song was not released as a single in the UK until 1983 to promote Motown's 18 Greatest Hits compilation album, on which the song was included. Upon its release, "Happy" (credited to Michael Jackson plus The Jackson 5) peaked at #52 on the British pop chart. It was also issued as a single by Bobby Darin and included on his posthumous Motown LP Darin: 1936-1973. It was later recorded by the song's composer, Smokey Robinson, and appeared on his landmark solo album A Quiet Storm.

According to Robinson, the song was inspired by the film's melody, which was originally composed by Michel Legrand. He explained, "I was looking at the movie one day, and I was listening to that melody, and I thought it was just such a beautiful melody, until I wanted to write some words for that melody, which I did, and I went and I sang them for Berry Gordy, and he was really upset because I didn't write them before he finished the movie so they could've been in the movie."

Happy (Real Life album)

Happy is a 1997 album by the Australian new wave band Real Life. Real Life consisted at the time of David Sterry, Danny Simcic, Allan Johnson and George Pappas. A limited edition release of Happy featured a bonus remix album called Happier.

Track listing