akin to a Taylor series expansion of a function. (Feynman diagram calculations rely heavily on perturbation expansions.) This makes the equations much easier to calculate with. Here, each term in ...

Abstract: The spectral efficiency (SE) and global energy efficiency (GEE) trade-off encountered in the design of millimeter-wave (mmWave)-based massive multi-input multi-output (MIMO) non-orthogonal ...

Every kind of function can take base types, composite types, or combinations of these as arguments (parameters). In addition, every kind of function can return a base type or a composite type.

Mathematical operators are provided for many PostgreSQL types. For types without standard mathematical conventions (e.g., date/time types) we describe the actual behavior in subsequent sections.

Characterization of the metalens involved measuring the point-spread function (PSF) using a customized setup with a rotatable optical axis. The Strehl ratio and modulation transfer function (MTF ...

The straight side is pointed outward. At the other end is the objective lens, a concave-convex lens, which curves inward on one side and outward on the other. The convex side faces outward.

However, the effectiveness of existing OPF models applied to bipolar DCDNs exhibits sensitivity to the problem type, underlying assumptions, and choice of objective functions. Hence, this paper ...

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