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A Monte Carlo study compared 14 methods to test the statistical significance of the intervening variable effect. An intervening variable (mediator) transmits the effect of an independent variable to a dependent variable....

Evolutionary computation techniques, genetic algorithms, evolutionary strategies and genetic programming are motivated by the evolution of nature. A population of individuals, which encode the problem solutions are manip...

A computer is generally considered to be a universal computational device; i.e., it is believed able to simulate any physical computational device with a cost in computation time of at most a polynomial factor: It is not...

Many potential applications have been proposed for carbon nanotubes, including conductive and high-strength composites; energy storage and energy conversion devices; sensors; field emission displays and radiation sources...

Journal For Healthcare Quality: September 2002 - Volume 24 - Issue 5 - p 52 doi: 10.1111/j.1945-1474.2002.tb00463.x

Materias / palabras clave: Classifier (UML); Gene; Computer science; Feature selection; Redundancy (engineering); Gene selection; Support vector machine; Computational biology; sort; Artificial intelligence; Pattern recognition (psychology); Data ...

Materias / palabras clave: Breast cancer; Medicine; Oncology; Gene signature; Gene expression profiling; Internal medicine; Lymph node; Stage (stratigraphy); Disease; Adjuvant therapy; Metastasis; Microarray

Materias / palabras clave: Stock (firearms); Economics; Financial economics; Stock market; Liberian dollar; Stock exchange; Monetary economics; Econometrics; Excess return; Expected return; Finance; Horse

Materias / palabras clave: Maxima and minima; Computer science; Robustness (evolution); Image registration; Artificial intelligence; Global optimization; Interpolation (computer graphics); Optimization problem; Computer vision; Motion (physics); A...

CONTEXT: Associations have been found between day-to-day particulate air pollution and increased risk of various adverse health outcomes, including cardiopulmonary mortality. However, studies of health effects of long-te...

Materias / palabras clave: Remote sensing; Radiometric dating; Vegetation (pathology); Environmental science; Radiometry; Vegetation Index; Geology; Normalized Difference Vegetation Index; Climate change; Oceanography; Pathology; Medicine

Materias / palabras clave: Medicine; Diabetes mellitus; MEDLINE; Intensive care medicine; Internal medicine; Family medicine; Endocrinology; Law; Political science

Materias / palabras clave: Basic reproduction number; Ordinary differential equation; Stability (learning theory); Applied mathematics; Stability theory; Transmission (telecommunications); Manifold (fluid mechanics); Mathematics; Simple (philosoph...

BACKGROUND: A 10-question screening scale of psychological distress and a six-question short-form scale embedded within the 10-question scale were developed for the redesigned US National Health Interview Survey (NHIS). ...

Materias / palabras clave: Sociology; Qualitative research; Educational research; Epistemology; Social science; Philosophy

The Cambridge Structural Database (CSD) now contains data for more than a quarter of a million small-molecule crystal structures. The information content of the CSD, together with methods for data acquisition, processing...

Materias / palabras clave: Cynicism; Psychology; Burnout; Work engagement; Confirmatory factor analysis; Structural equation modeling; Social psychology; Emotional exhaustion; Clinical psychology; Statistics; Chemistry; Mathematics

The particle swarm is an algorithm for finding optimal regions of complex search spaces through the interaction of individuals in a population of particles. This paper analyzes a particle's trajectory as it moves in disc...

Materias / palabras clave: Neuroscience; Segmentation; Artificial intelligence; Psychology; Pattern recognition (psychology); Computer science; Communication