A new study theorizes that evolution ticks at different speeds, especially when a big group of organisms first appears.

Duke University engineers are using artificial intelligence to do something scientists have chased for centuries; turn messy, ...

Abstract: In probability theory, variance is a device to measure dispersion of random variable from its mean. In order to explain complex uncertain random variable,variance and pseudo-variance are ...

An illustration of a magnifying glass. An illustration of a magnifying glass.

ABSTRACT: Based on complex variable theory, this study investigates the scattering of SH-waves by a circular inclusion in exponentially inhomogeneous media with nanoscale-dependent density and modulus ...

ABSTRACT: Based on complex variable theory, this study investigates the scattering of SH-waves by a circular inclusion in exponentially inhomogeneous media with nanoscale-dependent density and modulus ...

In fields ranging from immunology and ecology to economics and thermodynamics, multi-scale complex systems are ubiquitous. They are also notoriously difficult to model. Conventional approaches take ...

TO anyone interested in the progress of British science the appearance of a third edition of this spacious volume, well-nigh two hundred pages longer than the first edition, must be a very welcome ...

Regional security refers to the mutual support among a group of states that share common interests and objectives. Within this framework, countries establish economic and military alliances as a means ...