Society for EthnomusicologyThe Society for Ethnomusicology is, with the International Council for Traditional Music and the British Forum for Ethnomusicology, one of three major international associations for ethnomusicology. Its mission is "to promote the research, study, and performance of music in all historical periods and cultural contexts." Officially founded in 1955, its origins extend back to November, 1953 at the annual meeting of the American Anthropological Association in Philadelphia with an informal agreement between Willard Rhodes, David McAllester, and Alan P.
Wyoming SeminaryWyoming Seminary, founded in 1844, is a Methodist college preparatory school located in the Wyoming Valley of Northeastern Pennsylvania. The "Lower School," which consists of preschool - 8th-grade students, is located in Forty Fort. The "Upper School," comprising 9th-grade to postgraduate students, is located in Kingston. It is near the Susquehanna River and the city of Wilkes-Barre. Locally and in some publications, it is sometimes referred to as "Sem." As a boarding school, only Upper School students may board on campus.
Definite quadratic formIn mathematics, a definite quadratic form is a quadratic form over some real vector space V that has the same sign (always positive or always negative) for every non-zero vector of V. According to that sign, the quadratic form is called positive-definite or negative-definite. A semidefinite (or semi-definite) quadratic form is defined in much the same way, except that "always positive" and "always negative" are replaced by "never negative" and "never positive", respectively.
Tangent bundleIn differential geometry, the tangent bundle of a differentiable manifold is a manifold which assembles all the tangent vectors in . As a set, it is given by the disjoint union of the tangent spaces of . That is, where denotes the tangent space to at the point . So, an element of can be thought of as a pair , where is a point in and is a tangent vector to at . There is a natural projection defined by . This projection maps each element of the tangent space to the single point .
Marder (infantry fighting vehicle)The Schützenpanzer Marder 1 (ˈʃʏt͜sn̩ˌpant͜sɐ ˈmaʁdɐ ˈaɪ̯ns; "Schützen" carrying "Armour"-ed fighting vehicle "Marten 1") is a tracked German infantry fighting vehicle designed for use with the West German Panzergrenadiere units, mechanized infantry specialized for IFV combat. It has been operated by the German Army as the main Panzergrenadiere IFV from 1970s through to the present day. Developed as part of the rebuilding of West Germany's armoured fighting vehicle industry, the Marder has proven to be a successful and solid infantry fighting vehicle design.
Landless Workers' MovementLandless Workers' Movement (Movimento dos Trabalhadores Rurais Sem Terra, MST) is a social movement in Brazil, inspired by Marxism, generally regarded as one of the largest in Latin America, with an estimated informal membership of 1.5 million across 23 of Brazil's 26 states. MST defines its goals as access to the land for poor workers through land reform in Brazil, and activism around social issues that make land ownership more difficult to achieve, such as unequal income distribution, racism, sexism, and media monopolies.
PaintPaint is a liquid pigment that, after application to a solid material, and allowed to dry, adds a film-like layer to protect, add color, or provide texture. Paint can be made in many colors—and in many different types. Most paints are either oil-based or water-based, and each has distinct characteristics. For one, it is illegal in most municipalities to discard oil-based paint down household drains or sewers. Clean-up solvents are also different for water-based paint than oil-based paint.
Convex functionIn mathematics, a real-valued function is called convex if the line segment between any two distinct points on the graph of the function lies above the graph between the two points. Equivalently, a function is convex if its epigraph (the set of points on or above the graph of the function) is a convex set. A twice-differentiable function of a single variable is convex if and only if its second derivative is nonnegative on its entire domain.
Linear subspaceIn mathematics, and more specifically in linear algebra, a linear subspace or vector subspace is a vector space that is a subset of some larger vector space. A linear subspace is usually simply called a subspace when the context serves to distinguish it from other types of subspaces. If V is a vector space over a field K and if W is a subset of V, then W is a linear subspace of V if under the operations of V, W is a vector space over K.
Emmanuel GdoutosEmmanuel E. Gdoutos (Greek: Εμμανουήλ Ε. Γδούτος, born June 2, 1948) is a Greek academic, Professor Emeritus at the Democritus University of Thrace and Full Member of the Academy of Athens. He has worked in experimental mechanics, fracture mechanics, composite materials, and sandwich structures. His main scientific accomplishments include the solution of many problems of crack growth under combination of opening-mode and sliding-mode loading which were published in his book: “Problems of Mixed-Mode Crack Propagation.
Inverse hyperbolic functionsIn mathematics, the inverse hyperbolic functions are inverses of the hyperbolic functions, analogous to the inverse circular functions. There are six in common use: inverse hyperbolic sine, inverse hyperbolic cosine, inverse hyperbolic tangent, inverse hyperbolic cosecant, inverse hyperbolic secant, and inverse hyperbolic cotangent. They are commonly denoted by the symbols for the hyperbolic functions, prefixed with arc- or ar-.
Tucuruí DamThe Tucuruí Dam (Tucuruí means "grasshopper's water", translated from Tupí language; Tucuruí) is a concrete gravity dam on the Tocantins River located on the Tucuruí County in the State of Pará, Brazil. The main purpose of the dam is hydroelectric power production and navigation. It is the first large-scale hydroelectric project in the Brazilian Amazon rainforest. The installed capacity of the 25-unit plant is . Phase I construction began in 1980 and ended in 1984 while Phase II began in 1998 and ended in 2010.
