K12

K12 may refer to:

Science and mathematics

Technology

Other uses

K12 (company)

K12 Inc. is a for-profit education company that sells online schooling and curriculum to state and local governments. Its educational products and services are designed as alternatives to traditional "bricks and mortar" education for public school students from kindergarten to 12th grade. K12 is a publicly traded education management organization (EMO) that provides online education services to charter school students. It is paid for from taxes. K12 is the largest EMO in terms of enrollment.

History

The company was founded in 1999 by former banker Ronald J. Packard. Initial investors in the company included Michael R. Milken and Lowell Milken of education company Knowledge Universe, who along with the Milken Family Foundation, invested $10 million.Andrew Tisch of the Loews Corporation and Larry Ellison of Oracle Corporation also contributed venture capital.

William Bennett, Secretary of Education under Ronald Reagan was hired as the company's first chairman of the board, resigning in 2005 after some controversial comments on the radioshow "Morning in America" in which he said aborting black babies, although a "morally reprehensible" idea, would result in a lower crime rate. Lowell Milken served on the K12 board of directors until July 2007. Tisch currently serves as chairman of the board and Packard has served as CEO since the company's founding.

K12 (mountain)

K12 is the second highest peak in the Saltoro Mountains, a subrange of the Karakoram range in the Siachen region, near Jammu and Kashmir. It lies near the Line of Control. Its name comes from its designation given during the original survey of the Karakoram range.

K12 lies to the southwest of the Siachen Glacier; the K12 glacier heads on its northeast slopes and feeds the Siachen. The western slopes of K12 drain to the Bilafond Glacier system, and thence to the Dansam River, and eventually the Indus River.

K12 has seen little climbing activity, partly because of the unsettled political situation and the continued military presence in the area. It was first attempted in 1960, after a reconnaissance visit by famed explorer Eric Shipton in 1957. After a further unsuccessful attempt by a Japanese party in 1971, another Japanese expedition put two climbers, Shinichi Takagi and Tsutomu Ito, on the summit. They fell and died on the descent, and their bodies were not recovered. Another Japanese expedition returned in 1975 and made the second ascent. In 1984 the Indian army took hold of this peak as part of its plan to block any claims on the Siachen Glacier by Pakistan on the undemarcated portion of the Line of Control. No subsequent climbs or attempts are recorded in the Himalayan Index.

Frosty

Frosty or Frosties and similar may refer to:

Fictional snowman

Aerosol burn

An aerosol burn is an injury to the skin caused by the pressurized gas within an aerosol spray cooling quickly, with the sudden drop in temperature sufficient to cause frostbite to the applied area. Medical studies have noted an increase of this practice, known as "frosting", in pediatric and teenage patients.

Adiabatic expansion causes the gas (with a low boiling temperature) to rapidly cool on exit from the aerosol applier. According to controlled laboratory experiments, the gas from a typical deodorant spray can reduce skin temperature by up to sixty degrees Celsius.

The form of injury is freezing of the skin, a type of frostbite. It is highly advised for those who suffer from frostbite to seek medical attention.

In rare cases aerosol-induced burns can be severe enough to necessitate skin grafting.

Causes

The most common cause of aerosol burns is patients' spraying deodorants for prolonged periods of time in close proximity to their skin. This practice is more common in younger persons such as teenagers and can be referred to as "frosting" or having a "frosty". Injuries such as these are often self-inflicted, and depression should be considered as an underlying cause. However, some do it due to influence by their peers as a way of "impressing" them, with the "Aerosol Challenge" gaining popularity alongside the "Cinnamon Challenge" and "Chubby Bunny" contests as trends in dangerous peer-pressure-induced self-harm.

Ulmus parvifolia

Ulmus parvifolia, commonly known as the Chinese elm or lacebark elm, is a species native to eastern Asia, including China, India, Taiwan, Japan, North Korea, and Vietnam. It has been described as "one of the most splendid elms, having the poise of a graceful Nothofagus".<ref name=Hilliers'>Hilliers' Manual of Trees & Shrubs, 4th edition, 1977, David & Charles, Newton Abbot, England</ref> The tree was introduced to the UK in 1794.

Description

A small to medium deciduous, semi-deciduous (rarely semi-evergreen) tree growing to 10–18 m (33–59 ft) tall and 15–20 m (49–66 ft) wide with a slender trunk and crown. The leathery, lustrous green single-toothed leaves are small, 2–5 cm long by 1–3 cm broad, and often retained as late as December or even January in Europe and North America. The apetalous wind-pollinated perfect flowers are produced in early autumn, small and inconspicuous. The fruit is a samara, elliptic to ovate-elliptic, 10–13 mm long by 6–8 mm broad. The samara is mostly glabrous, the seed at the centre or toward the apex, borne on a stalk 1–3 mm in length; it matures rapidly and disperses by late autumn. The trunk has a handsome, flaking bark of mottled greys with tans and reds, giving rise to its other common name, the lacebark elm, although scarring from major branch loss can lead to large canker-like wounds.