Definitions beginning with M

modal distribution - permalink - collapse

All > Technology > Telecommunications

In an optical waveguide operating at a given wavelength, the number of modes supported, and their propagation time differences.
ATIS - Cite This Source - This Definition
Browse Related Terms: closed waveguide, coupled modes, cutoff attenuator, dominant mode, evanescent field, modal loss, planar waveguide, slab-dielectric waveguide

Modality - permalink - collapse

All > Medicine > Cancer

A method of treatment. For example, surgery and chemotherapy are treatment modalities.
National Cancer Institute - Cite This Source - This Definition
Browse Related Terms: Neoadjuvant, regimen, spectroscopy

All > Technology > Security > Biometrics

A type or class of biometric system. For example: face recognition, fingerprint recognition, iris recognition, etc.
NSTC Subcommittee on Biometrics - Cite This Source - This Definition
Browse Related Terms: Face Recognition, Hand Geometry Recognition, Infrared, Iris Recognition, IrisCode©, Keystroke Dynamics, Palm Print Recognition, Recognition, Speaker Recognition, Speech Recognition, Voice Recognition

modal loss - permalink - collapse

All > Technology > Telecommunications

In an open waveguide, such as an optical fiber, a loss of energy on the part of an electromagnetic wave due to obstacles outside the waveguide, abrupt changes in direction of the waveguide, or other anomalies, that cause changes in the propagation mode of the wave in the waveguide.
ATIS - Cite This Source - This Definition
Browse Related Terms: closed waveguide, coupled modes, cutoff attenuator, dominant mode, evanescent field, modal distribution, planar waveguide, slab-dielectric waveguide

modal noise - permalink - collapse

All > Technology > Telecommunications

Noise generated in an optical fiber system by the combination of mode-dependent optical losses and fluctuation in the distribution of optical energy among the guided modes or in the relative phases of the guided modes. Synonym speckle noise.
ATIS - Cite This Source - This Definition
Browse Related Terms: attenuation constant, group delay, group velocity, mode partition noise, multimode optical fiber, phase constant, speckle pattern

mode - permalink - collapse

All > Science > Biotechnology and Genetics > Food Biotechnology

In a frequency distribution, the class having the greatest frequency.
UN Food and Agriculture Organization - Cite This Source - This Definition
Browse Related Terms: coincidence, diurnal, probability

All > Technology > Programming > Perl

In the context of the stat syscall, refers to the field holding the "permission bits" and the type of the "file".
Perl - Cite This Source - This Definition
Browse Related Terms: AV, CV, floating point, GV, HV, I.V., monger, NV, pad, RV

All > Technology > Telecommunications

In a waveguide or cavity, one of the various possible patterns of propagating or standing electromagnetic fields. Note 1: Each mode is characterized by frequency, polarization, electric field strength, and magnetic field strength. Note 2: The electromagnetic field pattern of a mode depends on the frequency, refractive indices or dielectric constants, and waveguide or cavity geometry. 2. Any electromagnetic field distribution that satisfies Maxwell's equations and the applicable boundary conditions. 3. In data communications, a protocol used to transfer data from switch to switch or from switch to terminal. 4. In statistics, the value associated with the highest peak in a probability density function.
ATIS - Cite This Source - This Definition
Browse Related Terms: characteristic impedance (Zo), ground constants, height gain, intermediate-field region, Isotropic, plane wave, refractive index (η, n), transmission coefficient, trapped electromagnetic wave, wave impedance

Mode, Best - permalink - collapse

All > Law > Intellectual Property > Patent

See Best Mode.
Robert M. Hunter, Ph.D. - Cite This Source - This Definition
Browse Related Terms: Best Mode, critical date, date of application, Effective Date, Expiry Date, filing date, GATT, General Agreement on Tariffs and Trade (GATT), life of a patent, Mode, Best, Substitute Specification

MODE command - permalink - collapse

All > Technology > Parallel Computing > Grid Computing

In reality, GridFTP is not one protocol, but a collection of several protocols. There is a protocol used on the control channel, but there is a range of protocols available for use on the data channel. Which protocol is used is selected by the MODE command. Four modes are defined: STREAM (S), BLOCK (B), COMPRESSED (C) in RFC 959 for FTP, and EXTENDED BLOCK (E) in GFD.020 for GridFTP. There is also a new data channel protocol, or mode, being defined in the GGF GridFTP Working group which, for lack of a better name at this point, is called MODE X.
See also extended block mode (MODE E).
See also stream mode (MODE S).

Globus Toolkit - Cite This Source - This Definition
Browse Related Terms: Client, client/server transfer, command/response, control channel, data channel, dual channel protocol, extended block mode (MODE E), server, stream mode (MODE S), third party transfers

mode coupling - permalink - collapse

All > Technology > Telecommunications

In an electromagnetic waveguide, the exchange of power among modes. Note: In a multimode optical fiber, mode coupling reaches statistical equilibrium, i.e., equilibrium mode distribution, after the equilibrium length has been traversed.
ATIS - Cite This Source - This Definition
Browse Related Terms: EMD, equilibrium length, equilibrium mode distribution (EMD), equilibrium mode distribution length, equilibrium mode power distribution, equilibrium mode simulator, steady-state condition

mode field diameter (MFD) - permalink - collapse

All > Technology > Telecommunications

An expression of distribution of the irradiance, i.e., the optical power, across the end face of a single-mode fiber. Note: For a Gaussian power distribution in a single-mode optical fiber, the mode field diameter is that at which the electric and magnetic field strengths are reduced to 1/e of their maximum values, i.e., the diameter at which power is reduced to 1/e² of the maximum power, because the power is proportional to the square of the field strength.
ATIS - Cite This Source - This Definition
Browse Related Terms: hybrid mode, leaky mode, MFD, radiation mode, TE, TEM, TM, transverse electric and magnetic (TEM) mode, transverse electric (TE) mode, transverse magnetic (TM) mode

1. A mathematical description of a biological phenomenon. 2. A simplified biological system used to test hypotheses (e.g. Arabidopsis thaliana as a model plant).
UN Food and Agriculture Organization - Cite This Source - This Definition
Browse Related Terms: ABC model, aquaculture, characterization, mariculture

All > Technology > Security > Biometrics

A representation used to characterize an individual. Behavioralbased biometric systems, because of the inherently dynamic characteristics, use models rather than static templates. See also template.
NSTC Subcommittee on Biometrics - Cite This Source - This Definition
Browse Related Terms: Feature, Feature Extraction, Multimodal Biometric System, Template

model-based category - permalink - collapse

All > Technology > Search > Enterprise Search

A taxonomy of predefined terms that is used to determine the subject of a document so that the document can be indexed and searched with documents that have similar content.
IBM - Cite This Source - This Definition
Browse Related Terms: Categorization, category, category tree, Classification or Categorization, Subject-Matter Expert (SME), Supervised clustering, taxonomy

Modeling - permalink - collapse

All > Science > Biotechnology and Genetics > Human Genome

The use of statistical analysis, computer analysis, or model organisms to predict outcomes of research.
Human Genome Project - Cite This Source - This Definition
Browse Related Terms: animal model, Backcross, blast, Comparative genomics, knockout, Microbial genetics, Model organisms, Molecular farming, mouse model

All > Science > Water

Use of mathematical equations to simulate and predict real events and processes.

Bureau of Reclamation - Cite This Source - This Definition
Browse Related Terms: ADP, Alert (Automated Local Evaluation in Real Time), Basin runoff model, Computer base station, Cycle, Data collection platform, Decision makers, detection, Hydromet

Model organisms - permalink - collapse

All > Science > Biotechnology and Genetics > Human Genome

A laboratory animal or other organism useful for research.
Human Genome Project - Cite This Source - This Definition
Browse Related Terms: animal model, Backcross, blast, Comparative genomics, knockout, Microbial genetics, Modeling, Molecular farming, mouse model

Model Output Statistics - permalink - collapse

All > Science > Weather

(abbrev. MOS) - the Hydrometeorological Center (HPC) produces a short range (6 to 60 hours) MOS (Model Output Statistics) guidance package generated from the NGM, GFS, and ETA models for over 300 individual stations in the continental United States. These alphanumeric messages are made available at approximately 0400 and 1600 UTC for the 0000 and 1200 UTC forecast cycles, respectively. Model Output Statistics are a set of statistical equations that use model output to forecast the probability of precipitation, high and low temperature, cloud cover, and precipitation amount for many cities across the USA. The statistical equations were specifically tailored for each location, taking into account factors such as each location's climate.
NOAA National Weather Service - Cite This Source - This Definition
Browse Related Terms: Fan, Flash Flood Guidance, FWC, MAV, MET, MEX, MOS, Three-Hour Rainfall Rate

model template - permalink - collapse

All > Technology > Records Management

A template created to be copied and modified for the creation of new templates.
NARA - Cite This Source - This Definition
Browse Related Terms: Publication, record book, register, registration of a template, transcript book

Model Theory - permalink - collapse

All > Technology > Knowledge Management > Semantic Web

specifies the semantics of a formal language; assumes that the language refers to a âworldâ, and describes the minimal conditions that a world must satisfy in order to assign an appropriate meaning for every expression in the language.
Semantic Alley - Cite This Source - This Definition
Browse Related Terms: Semantic Web, (Sir) Timothy John Berners, W3C, Web 1.0, Web 2.0, Web 3.0

model-view pattern - permalink - collapse

All > Technology > Programming > Java

A pattern in which the representation of data (the model) is kept separate from its visualization (the view). Such decoupling makes it easier to change the underlying data representation, or provide multiple views, for instance. Quite often a third element is added to create the Model-View-Controller (MVC) pattern. In the MVC pattern, those elements of the system which are able to control or modify the data (the model) are also defined separately.
David J. Barnes - Cite This Source - This Definition
Browse Related Terms: content, context root, Data, document, element, mixed-content model, Root