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Hierarchical matrix. In numerical mathematics, hierarchical matrices (H-matrices) [1] [2] [3] are used as data-sparse approximations of non-sparse matrices. While a sparse matrix of dimension can be represented efficiently in units of storage by storing only its non-zero entries, a non-sparse matrix would require units of storage, and using ...
Capability management is a high-level management function, with particular application in the context of defense.. Capability management aims to balance economy in meeting current operational requirements, with the sustainable use of current capabilities, and the development of future capabilities, to meet the sometimes competing strategic and current operational objectives of an enterprise.
Contingency theory. For contingency theory in biology, see Wonderful life theory. A contingency theory is an organizational theory that claims that there is no best way to organize a corporation, to lead a company, or to make decisions. Instead, the optimal course of action is contingent (dependent) upon the internal and external situation.
317. Matrix metalloproteinases ( MMPs ), also known as matrix metallopeptidases or matrixins, are metalloproteinases that are calcium -dependent zinc -containing endopeptidases; [1] other family members are adamalysins, serralysins, and astacins. The MMPs belong to a larger family of proteases known as the metzincin superfamily.
Hankel matrix. In linear algebra, a Hankel matrix (or catalecticant matrix ), named after Hermann Hankel, is a square matrix in which each ascending skew-diagonal from left to right is constant. For example, More generally, a Hankel matrix is any matrix of the form. In terms of the components, if the element of is denoted with , and assuming ...
In biology, matrix ( pl.: matrices) is the material (or tissue) in between a eukaryotic organism's cells . The structure of connective tissues is an extracellular matrix. Fingernails and toenails grow from matrices. It is found in various connective tissues. It serves as a jelly-like structure instead of cytoplasm in connective tissue.
Array (data structure) In computer science, an array is a data structure consisting of a collection of elements ( values or variables ), of same memory size, each identified by at least one array index or key. An array is stored such that the position of each element can be computed from its index tuple by a mathematical formula.
Project portfolio management ( PPM) is the centralized management of the processes, methods, and technologies used by project managers and project management offices (PMOs) to analyze and collectively manage current or proposed projects based on numerous key characteristics. The objectives of PPM are to determine the optimal resource mix for ...