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Models, Immunological.   13
Models, Immunological -- Congresses.   c2003 1

Models, Linear -- See Linear Models

Statistical models in which the value of a parameter for a given value of a factor is assumed to be equal to a + bx, where a and b are constants. The models predict a linear regression.

Models, Logistic -- See Logistic Models

Statistical models which describe the relationship between a qualitative dependent variable (that is, one which can take only certain discrete values, such as the presence or absence of a disease) and an independent variable. A common application is in epidemiology for estimating an individual's risk (probability of a disease) as a function of a given risk factor.
  Models, Molecular -- 2 Related Mesh   2
Models, Molecular.   72
Models, Molecular -- Congresses.   c2005 1
Models, Molecular -- Periodicals.   5

Models, Neural Network -- See Neural Networks, Computer

A computer architecture, implementable in either hardware or software, modeled after biological neural networks. Like the biological system in which the processing capability is a result of the interconnection strengths between arrays of nonlinear processing nodes, computerized neural networks, often called perceptrons or multilayer connectionist models, consist of neuron-like units. A homogeneous group of units makes up a layer. These networks are good at pattern recognition. They are adaptive, performing tasks by example, and thus are better for decision-making than are linear learning machines or cluster analysis. They do not require explicit programming.

Models, Neurological -- See Also Kindling, Neurologic

The repeated weak excitation of brain structures, that progressively increases sensitivity to the same stimulation. Over time, this can lower the threshold required to trigger seizures.
Models, Neurological.   100
Models, Neurological -- Congresses.   3
Models, Neurological -- Periodicals.   2

Models, Nonlinear -- See Nonlinear Dynamics

The study of systems which respond disproportionately (nonlinearly) to initial conditions or perturbing stimuli. Nonlinear systems may exhibit "chaos" which is classically characterized as sensitive dependence on initial conditions. Chaotic systems, while distinguished from more ordered periodic systems, are not random. When their behavior over time is appropriately displayed (in "phase space"), constraints are evident which are described by "strange attractors". Phase space representations of chaotic systems, or strange attractors, usually reveal fractal (FRACTALS) self-similarity across time scales. Natural, including biological, systems often display nonlinear dynamics and chaos.
Models, Nursing.   55
Models, Nursing -- Case Reports.   2003 1
Models, Nursing -- Congresses.   c1991 1
Models, Nursing -- Outlines.   c1992 1
Models, Organizational.   24
Models, Organizational -- United States.   c2002 1
Models, Organizational $z United States.   1998 1

Models, Proportional Hazards -- See Proportional Hazards Models

Statistical models used in survival analysis that assert that the effect of the study factors on the hazard rate in the study population is multiplicative and does not change over time.
Models, Psychological.   141
Models, Psychological -- Collected Works.   3
Models, Psychological -- Congresses.   8
Models, Psychological -- Essays.   1974 1
Models, Psychological -- nursing.   c1982 1
Models, Psychological -- Psychoanalysis.   c1977 1

Models, Statistical -- See Also Meta-Analysis as Topic

A quantitative method of combining the results of independent studies (usually drawn from the published literature) and synthesizing summaries and conclusions which may be used to evaluate therapeutic effectiveness, plan new studies, etc., with application chiefly in the areas of research and medicine.
Models, Statistical.   131
Models, Statistical -- Congresses.   4
Models, Statistical -- United States.   2015 1
Models, Structural.   3
Models, Structural -- Periodicals.   2

Models, Surgical -- See Models, Anatomic

Three-dimensional representation to show anatomic structures. Models may be used in place of intact animals or organisms for teaching, practice, and study.
Models, Theorectical   2018 1
Models, Theoretical.   342
Models, Theoretical -- Congresses.   4
Models, Theoretical -- Maryland.   1974 1
Models, Theoretical -- Nurses' Instruction.   2
Models -- Theoretical -- nursing.   6
Models, Theoretical -- nursing -- Congresses.   1973 1
Models, Theoretical -- Nursing texts.   3
Models, Theoretical -- Periodicals.   6
Models, Theoretical -- United States.   2012 1
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