ERT

ERT may stand for:

USA (disambiguation)

USA or U.S.A. usually refers to the United States of America, a country in North America.

USA or U.S.A. may also refer to:

Places

Business

Universities

Other uses

American Revolution

The American Revolution was a political upheaval that took place between 1765 and 1783 during which colonists in the Thirteen American Colonies rejected the British monarchy and aristocracy, overthrew the authority of Great Britain, and founded the United States of America.

Starting in 1765, members of American colonial society rejected the authority of the British Parliament to tax them without colonial representatives in the government. During the following decade, protests by colonists—known as Patriots—continued to escalate, as in the Boston Tea Party in 1773 during which patriots destroyed a consignment of taxed tea from the Parliament-controlled and favored East India Company. The British responded by imposing punitive laws—the Coercive Acts—on Massachusetts in 1774, following which Patriots in the other colonies rallied behind Massachusetts. In late 1774 the Patriots set up their own alternative government to better coordinate their resistance efforts against Great Britain, while other colonists, known as Loyalists, preferred to remain aligned to the British Crown.

USA-229

USA-229, known before launch as NRO Launch 34 (NROL-34), is a pair of American signals intelligence satellites which were launched in 2011. They are operated by the United States National Reconnaissance Office.

Both satellites were deployed by a United Launch Alliance Atlas V 411 carrier rocket, which launched from Space Launch Complex 3E at the Vandenberg Air Force Base. The launch occurred at 04:24 UTC on 15 April 2011. The rocket placed the satellites into a low Earth orbit. By 04:29 UTC, official updates on the status of the spacecraft had been discontinued.

Whilst details of the satellites and their missions are officially classified, amateur observers have identified that the Atlas V deployed two satellites, one of which has officially been catalogued as debris. The two spacecraft have been identified as being a pair of third or fourth generation Naval Ocean Surveillance System satellites. Amateur observations have located the spacecraft in an orbit with a perigee of 1,025 kilometres (637 mi) and an apogee of 1,207 kilometres (750 mi), inclined at 64.4 degrees to the plane of the equator. Current generation NOSS satellites are always launched and operated in pairs, and are used to locate and track ships from the radio transmissions that they emit.

Die (integrated circuit)

A die in the context of integrated circuits is a small block of semiconducting material, on which a given functional circuit is fabricated. Typically, integrated circuits are produced in large batches on a single wafer of electronic-grade silicon (EGS) or other semiconductor (such as GaAs) through processes such as photolithography. The wafer is cut (“diced”) into many pieces, each containing one copy of the circuit. Each of these pieces is called a die.

There are three commonly used plural forms: dice, dies, and die.

Images

Single NPN bipolar junction transistor die.

Single NPN bipolar junction transistor die.

Close-up of an RGB light-emitting diode, showing the three individual silicon dice.

Close-up of an RGB light-emitting diode, showing the three individual silicon dice.

A small-scale integrated circuit die, with bond wires attached.

A small-scale integrated circuit die, with bond wires attached.

A VLSI integrated-circuit die.

A VLSI integrated-circuit die.

Goodyear welt

A Goodyear welt is a strip of leather, rubber, or plastic that runs along the perimeter of a shoe outsole. The machinery used for the process was invented in 1869 by Charles Goodyear, Jr., the son of Charles Goodyear. Goodyear construction is time-consuming but is considered the best method of shoe construction.

Construction

A Goodyear welt is stitched to the upper and a strip of canvas (known as "gemming") which is cemented to the insole of a shoe as an attach-point for the sole. The space enclosed by the welt is then filled with cork or some other filler material (usually either porous or perforated, for breathability), and the outsole is both cemented and stitched to the welt. This process of making shoes is referred to as Goodyear welt construction. Shoes with other types of construction may also have welts.

Process

The Goodyear welt process is a machine based alternative to the traditional handwelted method (c. 1500 AD) for the manufacture of men's shoes, taking its name from the inventor who devised the original machine to replace the earlier completely hand sewn method. The benefit of a shoe which is made using the Goodyear welt construction is that the shoe can be resoled repeatedly, giving the shoe a lifespan of years, sometimes even decades. Some claims towards added ventilation have been made as well but there are no proven studies comparing the breathability of different shoe construction methods.

Welt (band)

Welt is a punk rock band formed in Sacramento, California in 1993 by Jason Cooper, who has been the only constant member.

History

Welt signed to the Dr. Dream label, releasing the "Lame" single in 1994. The band's debut album, Better Days, was released in 1995.Kicked in the Teeth Again (1996) was seen as a progression. The band relocated to Orange County in 1998, releasing third album Broke Down the same year.

The band underwent several lineup changes prior to the late 1990s. Since then the band has been more stable, with Cooper joined by guitarists Tobe Bean and Todd Harper and drummer Marc Harrismendy. In 2000 the band signed with B.Y.O. Records.

Two of the band's tracks ("Get Lost" and "Broken") were used in the soundtrack of the film 21 (2000), and "The World is Mine" was used in the 2002 film The Skulls II.

In 2009, Cooper released the album The Shop Tapes under the name Jason Welt.

Discography

Albums