- direct methods
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fishery independent research surveys used to estimate abundance and collect other biological data. Aims to avoid biases found in commercial catch data
Dictionary of ichthyology. 2009.
direct methods
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Direct methods (crystallography) — In crystallography, direct methods are a family of methods for estimating the phases of the Fourier transform of the scattering density from the corresponding magnitudes. The methods generally exploit constraints or statistical correlations… … Wikipedia
Direct lobbying in the United States — are direct methods used by lobbyists to influence United States legislative bodies. Interest groups from many sectors spend billions of dollars on lobbying. There are three lobbying laws in the U.S. They require that a lobbying entity must be… … Wikipedia
Direct method — may refer to Direct method (education) for learning a foreign language Direct method (computational mathematics) as opposed to iterative method Direct methods (crystallography) for estimating the phases of the Fourier transform of the scattering… … Wikipedia
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Direct method in the calculus of variations — In the calculus of variations, a topic in mathematics, the direct method is a general method for constructing a proof of the existence of a minimizer for a given functional,[1] introduced by Zaremba and David Hilbert around 1900. The method… … Wikipedia
Direct Method — A method of creating a statement of cash flows during a given reporting period. The method uses actual cash flow information from the company s operations segment, instead of using accrual accounting values. Under both the direct and indirect… … Investment dictionary
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Direct mail — Direct mail, also known as junk mail, advertising mail or admail, is the delivery of advertising material to recipients of postal mail. It forms a significant subdiscipline of direct marketing. Some organizations attempt to help people opt out of … Wikipedia
