calculating
81Decompression (diving) — Divers decompressing in the water at the end of a dive Decompression in the context of diving derives from the reduction in ambient pressure experienced by the diver during the ascent at the end of a dive or hyperbaric exposure and refers to both …
82DiShIn — (Disjunctive Shared Information) is a method for exploitation of multiple inheritance when calculating the shared information content between two ontology concepts being compared by node based semantic similarity measures. DiShIn re defines the… …
83Natality in Population Ecology — is the scientific term for birth rate. Along with mortality rate, natality rate is used to calculate the dynamics of a population. They are the key factors in determining whether a population is increasing, decreasing or staying the same in size …
84Standard deviation — In probability and statistics, the standard deviation is a measure of the dispersion of a collection of values. It can apply to a probability distribution, a random variable, a population or a data set. The standard deviation is usually denoted… …
85Slide rule — For other uses, see Slide rule (disambiguation). A typical ten inch student slide rule (Pickett N902 T simplex trig). The slide rule, also known colloquially as a slipstick,[1] is a mechanical analog computer. The slide rule is used primarily for …
86Mental calculation — comprises arithmetical calculations using only the human brain, with no help from calculators, computers, or pen and paper. People use mental calculation when computing tools are not available, when it is faster than other means of calculation… …
87Unit record equipment — Before the advent of electronic computers, data processing was performed using electromechanical devices called unit record equipment, electric accounting machines (EAM) or tabulating machines. Unit record machines were as ubiquitous in industry… …
88abacus — /ab euh keuhs, euh bak euhs/, n., pl. abacuses, abaci /ab euh suy , kuy , euh bak uy/. 1. a device for making arithmetic calculations, consisting of a frame set with rods on which balls or beads are moved. 2. Archit. a slab forming the top of the …
89Calculator — For mechanical precursors to the modern calculator, see mechanical calculator. For other uses, see Calculator (disambiguation). An electronic pocket calculator with a 7‑segment LCD display, that can perform basic arithmetic operations …
90Determinant — This article is about determinants in mathematics. For determinants in epidemiology, see Risk factor. In linear algebra, the determinant is a value associated with a square matrix. It can be computed from the entries of the matrix by a specific… …
