a null result

См. также в других словарях:

• Null result — In science, a null result is a result without the expected content: that is, the proposed result is absent.[1] It is an experimental outcome which does not show an otherwise expected effect. This does not imply a result of zero or nothing, simply …   Wikipedia

• Null — may refer to: Contents 1 In computing 2 In art 3 In mathematics 4 In science 5 People …   Wikipedia

• Null (SQL) — The Greek lowercase omega (ω) character is used to represent Null in database theory. Null is a special marker used in Structured Query Language (SQL) to indicate that a data value does not exist in the database. Introduced by the creator of the… …   Wikipedia

• Null corrector — Testing a spherical mirror using an interferometer. All surfaces in the tester are either flat or spherical, so the tester itself is fairly easy to fabricate and test. This setup can test a spherical mirror of any size since the wavefront is… …   Wikipedia

• null — adjective null result/effect etc technical a result etc that is zero or nothing …   Longman dictionary of contemporary English

• Null (SQL) — Null (nulo) es un marcador especial usado en el lenguaje de consulta estructurado (SQL) para indicar que no existe un valor dentro de una base de datos. Introducido por el creador del modelo relacional de bases de datos E. F. Codd, su función es… …   Wikipedia Español

• null — [nʌl] adjective [only before a noun] 1. STATISTICS a null effect, result etc is one that is zero or nothing 2. LAW another name for null and void: • Their suit also asks the court to declare null the buyer s shareholder rights plan. * * * …   Financial and business terms

• Null-steering beamformer — Null Steering is a method of beam forming for narrow band signals where we want to have a simple way of compensating delays of receiving signals from a specific source at different elements of the antenna array. In general to make use of the… …   Wikipedia

• Null hypothesis — For the periodical, see Null Hypothesis: The Journal of Unlikely Science. The practice of science involves formulating and testing hypotheses, assertions that are capable of being proven false using a test of observed data. The null hypothesis… …   Wikipedia

• Null modem — A null modem adapter Null modem is a communication method to connect two DTEs (computer, terminal, printer etc.) directly using an RS 232 serial cable. The name stems from the historical use of the RS 232 cable to connect two teleprinter devices… …   Wikipedia

• Null-move heuristic — In computer chess programs, the null move heuristic is a heuristic technique used to enhance the speed of the alpha beta pruning algorithm. Contents 1 Rationale 2 Implementation 3 Problems with the null move heuristic …   Wikipedia