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A material's half-value layer (HVL), or half-value thickness, is the thickness of the material at which the intensity of radiation entering it is reduced by one half. [1] HVL can also be expressed in terms of air kerma rate (AKR), rather than intensity: the half-value layer is the thickness of specified material that, "attenuates the beam of radiation to an extent such that the AKR is reduced ...
A hardware verification language, or HVL, is a programming language used to verify the designs of electronic circuits written in a hardware description language. HVLs typically include features of a high-level programming language like C++ or Java as well as features for easy bit-level manipulation similar to those found in HDLs .
This concept is closely related to half-value layer (HVL): a material with a thickness of one HVL will attenuate 50% of photons. A standard x-ray image is a transmission image, an image with negative logarithm of its intensities is sometimes called a number of mean free paths image.
Television lines (TVL) is a specification of an analog camera or monitor's horizontal image resolution. [1] The TVL is one of the most important resolution measures in a video system. The TVL can be measured with the standard EIA 1956 resolution chart .
HVL may refer to: Half-value layer, in radiometry; Hardware verification language, in computer science; HeavyLift International, a defunct Emirati cargo airline; Hurstville railway station, in Sydney, Australia; Hutt Valley Line, a rail line in New Zealand; Western Norway University of Applied Sciences, the abbreviation derived from its ...
One important difference between most programming languages and HDLs is that HDLs explicitly include the notion of time. HDLs form an integral part of electronic design automation (EDA) systems, especially for complex circuits, such as application-specific integrated circuits , microprocessors , and programmable logic devices .
Within communication protocols, TLV (type-length-value or tag-length-value) is an encoding scheme used for informational elements.A TLV-encoded data stream contains code related to the record type, the record value's length, and finally the value itself.
Fig. 1. HSL (a–d) and HSV (e–h). Above (a, e): cut-away 3D models of each. Below: two-dimensional plots showing two of a model's three parameters at once, holding the other constant: cylindrical shells (b, f) of constant saturation, in this case the outside surface of each cylinder; horizontal cross-sections (c, g) of constant HSL lightness or HSV value, in this case the slices halfway ...