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PVS Chemicals, Inc
The initialism PVS may refer to: Organization * Polynesian Voyaging Society, a research and educational corporation in Hawaii * Prisoner Visitation and Support, US non-profit organization * Project Vote Smart, a US research organization * Performance of Veterinary Services, an OIE capacity building platform for the sustainable improvement of national veterinary services * Pojoaque Valley Schools Science * Persistent vegetative state * Plummer–Vinson syndrome, a rare disease * Polyvinyl siloxane, an addition reaction silicone elastomer * Potato virus S, a plant pathogenic virus * Phantom vibration syndrome * Penile vibratory stimulation, a means of inducing erection and ejaculation Technology * Palmtex Portable Videogame System, a handheld videogame console * Potentially visible set, a form of occlusion culling * Principal variation search, a negamax algorithm * Prototype Verification System, a specification language * PVS-Studio, a static code analyzer for C, C++ a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polynesian Voyaging Society
The Polynesian Voyaging Society (PVS) is a non-profit research and educational corporation based in Honolulu, Hawaii. PVS was established to research and perpetuate traditional Polynesian voyaging methods. Using replicas of traditional double-hulled canoes, PVS undertakes voyages throughout Polynesia navigating without modern instruments. History The society was founded in 1973 by nautical anthropologist Ben Finney, Hawaiian artist Herb Kawainui Kane, and sailor Charles Tommy Holmes. The three wanted to show that ancient Polynesians could have purposely settled the Polynesian Triangle using non-instrument navigation. The first PVS project was to build a replica of a double-hulled voyaging canoe. In the genesis of the Society, the East–West Center was instrumental in convincing the UN authorities in the Pacific of the necessity of the project. The navigator Pius "Mau" Piailug, master of the techniques of traditional navigation, was named Special Fellow by the Center. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Penile Vibratory Stimulation
Vibroejaculation (or penile vibratory stimulation) is a means of inducing ejaculation through vibration. It is used for semen collection, and in humans, the management of anejaculation. One method of penile vibratory stimulation is the use of specialised devices that are placed around the glans penis to stimulate it by vibration. Alternatively, a powerful wand vibrator of the type used as sex toys can be used. See also * Electroejaculation Electroejaculation is a procedure used to semen collection, obtain semen samples from sexually mature male mammals. The procedure is used for breeding programs and research purposes in various species, as well as in the treatment of Anorgasmia, eja ... References Ejaculation inducing devices {{med-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Provideniya Bay Airport
Provideniya Bay Airport (russian: Аэропорт «Бухта Провидения») (also Urelik and Ureliki) is a small airport in Chukotka, Russia located 3 km southwest of Provideniya. It services primarily small transport aircraft. A concrete apron contains four parking spaces. Military history In 1954, an 8,200 ft (2,500 m) hard surface runway capable of supporting a fighter regiment and jet bomber deployments was constructed.THE SOVIET ARCTIC CIA-RDP79T01018A000300010001-0, Central Intelligence Agency, Washington, DC, July 1, 1959. This attracted the interest of the US intelligence community as Provideniya was the closest Soviet military airfield to the United States. By 1964, at least three |
PVS-Studio
PVS-Studio is a proprietary static code analyzer on guard of code quality, security, and code safety supporting C, C++, C++11, C++/CLI, C++/CX C++/CX ''(C++ component extensions)'' is a language projection for Microsoft's Windows Runtime platform. It takes the form of a language extension for C++ compilers, and it enables C++ programmers to write programs that call Windows Runtime (WinRT) ..., C# and Java. PVS‑Studio detects various errors typos, dead code, and potential vulnerabilities (static application security testing, or SAST), the analyzer matches warnings to the common weakness enumeration, SEI CERT coding standards, and supports the MISRA standard. PVS‑Studio warning classifications for various standards: * CVE (common weakness enumeration) * SEI CERT coding standard * MISRA * OWASP application security verification standard PVS-Studio supports integration with the most diverse development tools and compilation systems, as Visual Studio 2022, IntelliJ IDEA, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Prototype Verification System
The Prototype Verification System (PVS) is a specification language integrated with support tools and an automated theorem prover, developed at the Computer Science Laboratory of SRI International in Menlo Park, California. PVS is based on a kernel consisting of an extension of Church's theory of types with dependent types, and is fundamentally a classical typed higher-order logic. The base types include uninterpreted types that may be introduced by the user, and built-in types such as the booleans, integers, reals, and the ordinals. Type-constructors include functions, sets, tuples, records, enumerations, and abstract data types. Predicate subtypes and dependent types can be used to introduce constraints; these constrained types may incur proof obligations (called type-correctness conditions or TCCs) during typechecking. PVS specifications are organized into parameterized theories. The system is implemented in Common Lisp, and is released under the GNU General Public License (G ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Principal Variation Search
Principal variation search (sometimes equated with the practically identical NegaScout) is a negamax algorithm that can be faster than alpha-beta pruning. Like alpha-beta pruning, NegaScout is a directional search algorithm for computing the minimax value of a node in a tree. It dominates alpha-beta pruning in the sense that it will never examine a node that can be pruned by alpha-beta; however, it relies on accurate node ordering to capitalize on this advantage. NegaScout works best when there is a good move ordering. In practice, the move ordering is often determined by previous shallower searches. It produces more cutoffs than alpha-beta by assuming that the first explored node is the best. In other words, it supposes the first node is in the principal variation. Then, it can check whether that is true by searching the remaining nodes with a null window (also known as a scout window; when alpha and beta are equal), which is faster than searching with the regular alpha-bet ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Potentially Visible Set
In 3D computer graphics, Potentially Visible Sets are used to accelerate the rendering of 3D environments. They are a form of occlusion culling, whereby a candidate set of ''potentially visible'' polygons are pre-computed, then indexed at run-time in order to quickly obtain an estimate of the visible geometry. The term ''PVS'' is sometimes used to refer to any occlusion culling algorithm (since in effect, this is what all occlusion algorithms compute), although in almost all the literature, it is used to refer specifically to occlusion culling algorithms that pre-compute visible sets and associate these sets with regions in space. In order to make this association, the camera's view-space (the set of points from which the camera can render an image) is typically subdivided into (usually convex) regions and a PVS is computed for each region. Benefits vs. Cost The benefit of offloading visibility as a pre-process are: * The application just has to look up the pre-computed se ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Palmtex Portable Videogame System
The Palmtex Portable Videogame System (PVS), later renamed and released as the Super Micro and distributed under the Home Computer Software name, is a handheld game console developed and manufactured by Palmtex, released in 1984. The system is widely known and referred to as the Palmtex Super Micro, due to the fact that when the console was re-branded, the Palmtex logo could still be found on the console, alongside Super Micro. However, Palmtex dropped its name from the packaging and promotional materials, in favor of its business partner, making its retail name the Home Computer Software Super Micro. It had a number of quality and design issues. Only three games are known to have been released, it is possible that only one or more factory runs were made, and the existing units were liquidated and later sold through mail order with little to no advertising. As a result, it is now a rare collectible system, although working units are still extremely prone to breaking with normal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phantom Vibration Syndrome
Phantom vibration syndrome or phantom ringing syndrome is the perception that one's mobile phone is vibrating or ringing when it is not. Other terms for this concept include ringxiety (a portmanteau of ''ring'' and ''anxiety''), fauxcellarm (a portmanteau of "faux" /fo͜ʊ/ meaning "fake" or " false" and "cellphone" and "alarm" pronounced similarly to "false alarm") and phonetom (a portmanteau of ''phone'' and ''phantom'') and phantom phone signals. According to Michael Rothberg, the term is not a syndrome, but is better characterised as a tactile hallucination since the brain perceives a sensation that is not actually present. WebMD published an article on phantom vibration syndrome with Rothberg as a source. Several other articles have been published in 2010s, including in NPR, Bustle, CBS News, and Psychology Today. Phantom ringing may be experienced while taking a shower, watching television, or using a noisy device. Humans are particularly sensitive to auditory tones between ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Prisoner Visitation And Support
Prisoner Visitation and Support (PVS) is a non-profit organization based in Philadelphia. Trained PVS volunteers visit prisoners in the United States Federal Prison system and military prisons. They offer companionship and friendship, with no religious or other agenda. Their particular focus is prisoners who don't receive regular visits, are facing long sentences, and/or are in solitary confinement. PVS visitors come from a variety of religious and non-religious backgrounds, and the organization is supported by a wide variety of religious groups. Since 1972, PVS has enjoyed blanket permission from the Federal Bureau of Prisons to visit at all federal prisons and with any federal prisoner in the United States. In 1975, the Department of Defense granted PVS similar access to all military prisons. Prisoner Visitation and Support was founded in 1968 by long-time prison visitors and activists Fay Honey Knopp and Bob Horton Bob, BOB, or B.O.B. may refer to: Places *Mount Bob, N ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Potato Virus S
Potato virus S (PVS) is a plant pathogenic virus. It was first reported in Netherlands. PVS causes mild or no symptoms in most potato varieties. It is common in potatoes in many regions and does not cause significant yield losses. Field-grown potatoes are not routinely screened for this virus because it is not considered economically important. However, PVS often present in mixed infections with other potato viruses, which may accentuate symptom severity. Genome and Phylogeny The single-stranded, positive-sense RNA genome of PVS is approximately 8.5 kb in length and enclosed in its filamentous particle. This genome consists of a 5′ cap structure and an open reading frame (ORF) encoding an RNA-dependent RNA polymerase RNA-dependent RNA polymerase (RdRp) or RNA replicase is an enzyme that catalyzes the replication of RNA from an RNA template. Specifically, it catalyzes synthesis of the RNA strand complementary to a given RNA template. This is in contrast to t ... (RdRp), the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polyvinyl Siloxane
Polyvinyl siloxane (PVS), also called poly-vinyl siloxane, vinyl polysiloxane (VPS), or vinylpolysiloxane, is an addition-reaction silicone elastomer (an addition silicone). It is a viscous liquid that cures (solidifies) quickly into a rubber-like solid, taking the shape of whatever surface it was lying against while curing. As with two-part epoxy, its package keeps its two component liquids in separate tubes until the moment they are mixed and applied, because once mixed, they cure (harden) rapidly. Polyvinyl siloxane is widely used in dentistry as an impression material. It is also used in other contexts where an impression similar to a dental impression is needed, such as in audiology (to take ear impressions for fitting custom hearing protection or hearing aids) or in industrial applications (such as to aid in the inspection of interior features of machined parts, for example, internal grooves inside bores). Polyvinyl siloxane was commercially introduced in the 1970s. To create ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
