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Deep-submergence vehicle. In 1960, Jacques Piccard and Don Walsh were the first people to explore the deepest part of the world's ocean, and the deepest location on the surface of the Earth's crust, in the bathyscaphe Trieste designed by Auguste Piccard. A deep-submergence vehicle ( DSV) is a deep-diving crewed submersible that is self ...
Butler–Volmer equation. In electrochemistry, the Butler–Volmer equation (named after John Alfred Valentine Butler [1] and Max Volmer ), also known as Erdey-Grúz –Volmer equation, is one of the most fundamental relationships in electrochemical kinetics. It describes how the electrical current through an electrode depends on the voltage ...
An important example of a log-concave density is a function constant inside a given convex body and vanishing outside; it corresponds to the uniform distribution on the convex body, which explains the term "central limit theorem for convex bodies". Another example: f(x 1, ..., x n) = const · exp(−(| x 1 | α + ⋯ + | x n | α) β) where α ...
SCADA. v. t. e. The theory of constraints ( TOC) is a management paradigm that views any manageable system as being limited in achieving more of its goals by a very small number of constraints. There is always at least one constraint, and TOC uses a focusing process to identify the constraint and restructure the rest of the organization around it.
Big O notation is a mathematical notation that describes the limiting behavior of a function when the argument tends towards a particular value or infinity. Big O is a member of a family of notations invented by German mathematicians Paul Bachmann, [1] Edmund Landau, [2] and others, collectively called Bachmann–Landau notation or asymptotic ...
The Debye–Hückel limiting law enables one to determine the activity coefficient of an ion in a dilute solution of known ionic strength. The equation is [1] : section 2.5.2. where. is the charge number of ion species i, is the elementary charge, is the inverse of the Debye screening length (defined below), is the relative permittivity of the ...
Diode-resistor circuit example. To illustrate the complications in using this law, consider the problem of finding the voltage across the diode in Figure 1. Figure 1: Diode circuit with resistive load. Because the current flowing through the diode is the same as the current throughout the entire circuit, we can lay down another equation.
Negative density-dependence, or density-dependent restriction, describes a situation in which population growth is curtailed by crowding, predators and competition. [citation needed] In cell biology, it describes the reduction in cell division. When a cell population reaches a certain density, the amount of required growth factors and nutrients ...