sectional model

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• Sectional curvature — In Riemannian geometry, the sectional curvature is one of the ways to describe the curvature of Riemannian manifolds. The sectional curvature K(σp) depends on a two dimensional plane σp in the tangent space at p. It is the Gaussian curvature of… …   Wikipedia

• Model rocket — A typical model rocket during launch A model rocket is a small rocket that is commonly advertised as being able to be launched by anybody, to, in general, low altitudes (usually to around 100–500 m (300–1500 ft) for a 30 g (1 oz.) model) and …   Wikipedia

• Cross-sectional regression — A Cross sectional regression is a type of regression model in which the explained and explanatory variables are associated with one period or point in time. This is in contrast to a time series regression or longitudinal regression in which the… …   Wikipedia

• Gravity model of trade — The gravity model of trade in international economics, similar to other gravity models in social science, predicts bilateral trade flows based on the economic sizes of (often using GDP measurements) and distance between two units. The model was… …   Wikipedia

• Loyalty business model — The loyalty business model is a business model used in strategic management in which company resources are employed so as to increase the loyalty of customers and other stakeholders in the expectation that corporate objectives will be met or… …   Wikipedia

• Lumped element model — In general, the lumped component model is a way of simplifying the behaviour of spatially distributed systems into a topology consisting of discrete entities that approximate the behaviour of the distributed system under certain assumptions. It… …   Wikipedia

• Plug flow reactor model — The plug flow reactor (PFR) model is used to describe chemical reactions in continuous, flowing systems. The PFR model is used to predict the behaviour of chemical reactors, so that key reactor variables, such as the dimensions of the reactor,… …   Wikipedia

• Lumped capacitance model — A lumped capacitance model, also called lumped system analysis,[1] reduces a thermal system to a number of discrete “lumps” and assumes that the temperature difference inside each lump is negligible. This approximation is useful to simplify… …   Wikipedia

• Prelude (music) — A prelude is a short piece of music, which its form will vary from piece to piece. While, during the Baroque Age, for example, it may have served as an introduction to succeeding movements of a work that were usually longer and more complex, it… …   Wikipedia

• Well smack — Sectional drawing of well smack[1] A well smack is a type of traditional fishing boat that has a well amidships. The well was filled with circulated external water, which kept fish alive until delivered to land and sold. It was a modified form of …   Wikipedia

• United States — a republic in the N Western Hemisphere comprising 48 conterminous states, the District of Columbia, and Alaska in North America, and Hawaii in the N Pacific. 267,954,767; conterminous United States, 3,022,387 sq. mi. (7,827,982 sq. km); with… …   Universalium