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Did you mean Models, modelling Models, modelling

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model

Representation of reality in which the main features of some aspect of the real world are presented in simplified terms in order to make that aspect easier to comprehend, and often to ...

model

model   Quick reference

A Dictionary of Philosophy (3 ed.)

Reference type:
Subject Reference
Current Version:
2016
Subject:
Philosophy
Length:
24 words

... In logic, a model for a set of sentences is an interpretation under which they are all true. See also model theory...

model

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A Dictionary of Computer Science (7 ed.)

Reference type:
Subject Reference
Current Version:
2016

... A simplified representation of something (the referent ). The representation may be physical or abstract, and may be restricted to certain properties of the referent. In computing, models are usually abstract and are typically represented in a diagramming notation, such as dataflow diagrams (in functional design ), ERA diagrams (for a data model ), or state-transition diagrams (for a model of behaviour); in the case of the relational model the referent is the target system while in the waterfall model , V-model , and spiral model the referent...

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A Dictionary of Weather (2 ed.)

Reference type:
Subject Reference
Current Version:
2008

... Any theoretical representation of a process or system, including conceptual, as well as numerical, models. In general, for practical reasons, a number of simplifying assumptions must be made, which limit the extent to which a model truly represents actual conditions, the time period over which any conclusions are valid, and the application for which that model may be employed. In meteorology and climatology, numerical models of varying complexity are used, ranging from intermediate coupled models , in which a simple model for the atmosphere is linked to a...

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A Dictionary of Chemical Engineering

Reference type:
Subject Reference
Current Version:
2014

...model A mathematical representation of a system or process using equations that predict its behaviour. See mathematical model . ...

model

model n.   Quick reference

A Dictionary of Psychology (4 ed.)

Reference type:
Subject Reference
Current Version:
2015

...Among the most successful abstract models in the history of science are Euclid’s geometry, which models spatial relationships, and Newton’s theory of mechanics, which models the interaction of physical objects and forces operating on them. See also additive model , construct , linear model , measurement model , multiplicative model , quadratic model . Compare hypothesis , theory...

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A Dictionary of Media and Communication (3 ed.)

Reference type:
Subject Reference
Current Version:
2020
Subject:
Media studies
Length:
115 words

... 1. ( theoretical model ) (social science) A formalized specification of a hypothesized set of relationships in a simplified representation of a system or process; often spatialized in diagrammatic form (as in many communication models). See also media models . 2. Any representation of one phenomenon by another: for example, an analogy or metaphor (e.g. story model). 3. Loosely, a synonym for a theory , a frame of reference , a set of related conceptual propositions , or a paradigm (e.g. hypodermic model , reception model). ...

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The Oxford Dictionary of Sports Science & Medicine (3 ed.)

Reference type:
Subject Reference
Current Version:
2007

... A mathematical, physical, pictorial, or computer representation, of one phenomenon by another. Models are often used to simplify complex phenomena for analytical purposes. See also metaphor...

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The Oxford Dictionary of English Grammar (2 ed.)

Reference type:
Subject Reference
Current Version:
2014

... An abstract representation or theory of the grammatical system or semantics of a language. Various models are proposed by linguists working in different schools of...

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A Dictionary of Geography (5 ed.)

Reference type:
Subject Reference
Current Version:
2015

...in geography saw an emphasis on models: basic mathematical equations and models, such as gravity models, deterministic models, such as von Thünens and Weber’s location models, and stochastic models that use probability. The ‘cultural’ turn—the counter-positivist response from human geography—stressed the weaknesses of models. O’Sullivan (2004) TIBG 29, 3 writes of geocomputational modelling, that ‘the compositional model represents a theory about the world, rather than the world itself. The end result is a model…whose behaviour may be almost as...

model

model   Reference library

The Handbook of International Financial Terms

Reference type:
Subject Reference
Current Version:
2005

...into account. In finance models are extensively used for determining the value of instruments. The best example is undoubtedly the option pricing model which, in its many forms, is used to provide an accurate estimation of the value and behaviour of options. Models may have several different forms: iconic models are physical replicas of the real thing (for instance a toy); analogue models provide a physical representation of the modelled activity (for instance a thermometer); and mathematical models use symbols and mathematical relationships to...

model

model   Reference library

Oxford Dictionary of Biochemistry and Molecular Biology (2 ed.)

Reference type:
Subject Reference
Current Version:
2008
Subject:
Science and technology, Life Sciences
Length:
119 words

...observations as an aid to calculation and prediction. 5 to construct or create a model (def. 1, 2, 3). —modelled or (sometimes US) modeled adj. ; modelling or (sometimes US) modeling ...

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The Concise Oxford Dictionary of Linguistics (3 ed.)

Reference type:
Subject Reference
Current Version:
2014
Subject:
Linguistics
Length:
162 words

... Often of a general way of conceiving or describing some aspect of one’s subject-matter. Thus a model of sound change is a view of how, in general, such change takes place; hence, in addition, a way in which particular changes may be described. A model of syntax is similarly a general view of the relations in which words stand, of the rules that govern these relations, etc.; hence, again, a pattern that may be followed in describing the syntax of particular languages. ‘Model’, in this sense, is often harmlessly interchangeable with ‘theory’. Also in the...

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A Dictionary of Human Geography

Reference type:
Subject Reference
Current Version:
2013
Subject:
Social sciences, Human Geography
Length:
310 words

... An abstract, generalized, and structured representation of a system and its operation. Models seek to represent the various elements that comprise a system, the interrelationships between these elements, and the processes that make the system work and produce particular outcomes. They are extremely common in the physical and natural sciences, and are also routinely developed and used to understand and regulate human systems. For example, climate models are used in forecasting weather and transport models are used in traffic management. Model building became...

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A Dictionary of Environment and Conservation (3 ed.)

Reference type:
Subject Reference
Current Version:
2017

... A representation or description of a complex process or object, usually on a smaller scale and/or in a simplified...

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A Dictionary of Statistics (3 ed.)

Reference type:
Subject Reference
Current Version:
2014

... A simple description of a probabilistic process that may have given rise to observed data . For example, if the data consist of the numbers shown by a fair die during a game of Snakes and Ladders, then a simple model would state that for each roll, and independent of the outcomes of other rolls, the distribution of the number shown is a discrete uniform distribution , on 1, 2,…, 6. Models form the bedrock of Statistics. Specific distributions are often invoked. Many types of models are mentioned in this...

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A Dictionary of Epidemiology (6 ed.)

Reference type:
Subject Reference
Current Version:
2016

... In epidemiology, the use of models began with an effort to predict the onset and course of epidemics. In the second report of the Registrar-General of England and Wales (1840), William Farr developed the beginnings of a predictive model for communicable disease epidemics. He had recognized regularities in the smallpox epidemics of the 1830s. By calculating frequency curves for these past outbreaks, he estimated the deaths to be expected. See also demonstration model ; mathematical model ; theoretical epidemiology . ...

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A Dictionary of Economics (5 ed.)

Reference type:
Subject Reference
Current Version:
2017
Subject:
Social sciences, Economics
Length:
119 words

...model A simplified system used to simulate some aspects of the real economy. Models are used in economics because there are limited possibilities for experimentation and past experience does not always provide an answer. A model is a simplified description of the economy, or the part of the economy, relevant for the analysis. Economic models are distinguished from those in the natural sciences by the incorporation of independent decision-making by firms, consumers, and the politicians and bureaucrats who constitute government. These economic agents do not...

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A Dictionary of Sociology (4 ed.)

Reference type:
Subject Reference
Current Version:
2015
Subject:
Social sciences, Sociology
Length:
274 words

...in mathematical terms, as for example in a regression model or loglinear model. Model building, a key aspect of mathematical sociology , involves the refinement of models from the stage of a flow diagram to a formal mathematical expression. Causal models may be of either type. Whatever form it takes, a model is an aid to complex theoretical activity, and directs our attention to concepts or variables and their interrelationships. See also multi-level models ; multivariate analysis...

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A Dictionary of Chemistry (8 ed.)

Reference type:
Subject Reference
Current Version:
2020
Subject:
Science and technology, Chemistry
Length:
55 words

... A representation of a physical or chemical system that is a simplification of the real system but which attempts to retain most of the key features of that system. The simplifications make mathematical analysis of the model easier than is the case in the real system and sometimes enable exact solutions to be...

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A Dictionary of Dentistry (2 ed.)

Reference type:
Subject Reference
Current Version:
2020
Subject:
Medicine and health, Dentistry
Length:
62 words

...model n. A positive reproduction or cast made from an impression of an object. It is used as a diagnostic or status record or as a base for the construction of a prosthetic or orthodontic appliance . A model trimmer is an instrument with an abrasive wheel used to shape and remove excess stone or plaster from a...

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