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PSF Deconvolution V
PSF is an abbreviation that may refer to: Organisations Political parties * French Social Party ''(Parti Social Français)'' (1936–1940), a right-wing nationalist party * French Socialist Party ''(Parti Socialiste Français)'', active since 1969 * Palestinian Popular Struggle Front * Peoples Students Federation, the youth wing of the Pakistan Peoples Party * Provisional Sinn Féin, Ireland * Socialist Party without Borders ''(Parti Socialiste sans Frontières)'', a leftist party in Chad Law enforcement * Public Security Forces the principal law-enforcement arm of the Bahraini Ministry of Interior * Puntland Security Force, Somalia Business and companies * P.S.F. Records, a record label * Pennsylvania Shakespeare Festival, a professional theatre company * Professional service firm, a company offering consulting, legal, or other services * Premium Standard Farms, Inc, a pork producer * Pressed Steel Fisher, a supplier of British car parts Other organisations * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
French Social Party
The French Social Party (, PSF) was a French nationalist political party founded in 1936 by François de La Rocque, following the dissolution of his Croix-de-Feu league by the Popular Front government. France's first right-wing mass party, prefiguring the rise of Gaullism after the Second World War, it experienced considerable initial success but disappeared in the wake of the fall of France in 1940 and was not refounded after the war. Background and origins (1927–36) La Rocque envisioned the PSF as the more explicitly-political successor of the Croix-de-Feu, the World War I veterans' organization that had been founded in 1927 and, by the early 1930s, had emerged as the largest and one of the most influential of interwar France's numerous far-right leagues. Though the Croix-de-Feu had adopted as its slogan "''Social d'abord''" ("Social First") as a counter to the "''Politique d'abord''" ("Politics First") of Action Française, it espoused the political goals elaborated by La ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pondicherry Science Forum
Pondicherry Science Forum (PSF) was founded in 1985 as "a non profit, voluntary, public-interest organization" which is based in Puducherry, India. It works primarily on issues related to science policy and science popularization. Publications *''Ariviyal Murasu'' (monthly) *'' Children's Indradanush'' *'' Samam News Letter'' (monthly) *'' Thulir Magazine'' (monthly) References External links * {{official site, http://psfcerd.org Organisations based in Puducherry Non-profit organisations based in India Environmental organisations based in India Scientific organisations based in India 1985 establishments in Pondicherry Scientific organizations established in 1955 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Prolate Spheroidal Wave Function
In mathematics, prolate spheroidal wave functions are eigenfunctions of the Laplacian in prolate spheroidal coordinates, adapted to boundary conditions on certain ellipsoids of revolution (an ellipse rotated around its long axis, “cigar shape“). Related are the oblate spheroidal wave functions (“pancake shaped” ellipsoid). Solutions to the wave equation Solve the Helmholtz equation, \nabla^2 \Phi + k^2 \Phi=0, by the method of separation of variables in prolate spheroidal coordinates, (\xi,\eta,\varphi), with: :\ x=a \sqrt \cos \varphi, :\ y=a \sqrt \sin \varphi, :\ z=a \, \xi \, \eta, and \xi \ge 1, , \eta, \le 1 , and 0 \le \varphi \le 2\pi. Here, 2a > 0 is the interfocal distance of the elliptical cross section of the prolate spheroid. Setting c=ka, the solution \Phi(\xi,\eta,\varphi) can be written as the product of e^, a radial spheroidal wave function R_(c,\xi) and an angular spheroidal wave function S_(c,\eta). The radial wave function R_(c,\xi) satisf ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spinal Fusion
Spinal fusion, also called spondylodesis or spondylosyndesis, is a surgery performed by Orthopedic surgery#Practice, orthopaedic surgeons or neurosurgeons that joins two or more vertebrae. This procedure can be performed at any level in the spine (cervical, thoracic, lumbar, or sacral) and prevents any movement between the fused vertebrae. There are many types of spinal fusion and each technique involves using bone grafting—either from the patient (autotransplantation, autograft), donor (allograft), or artificial bone substitutes—to help the bones heal together. Additional hardware (screws, plates, or Interbody fusion cage, cages) is often used to hold the bones in place while the graft fuses the two vertebrae together. The placement of hardware can be guided by fluoroscopy, Computer-assisted surgery, navigation systems, or Robot-assisted surgery, robotics. Spinal fusion is most commonly performed to relieve the pain and pressure from mechanical pain of the vertebrae or on th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Performance Shaping Factor
''Influence Diagrams Approach (IDA)'' is a technique used in the field of Human reliability Assessment (HRA), for the purposes of evaluating the probability of a human error occurring throughout the completion of a specific task. From such analyses measures can then be taken to reduce the likelihood of errors occurring within a system and therefore lead to an improvement in the overall levels of safety. There exist three primary reasons for conducting an HRA; error identification, error quantification and error reduction. As there exist a number of techniques used for such purposes, they can be split into one of two classifications; first generation techniques and second generation techniques. First generation techniques work on the basis of the simple dichotomy of ‘fits/doesn’t fit’ in the matching of the error situation in context with related error identification and quantification and second generation techniques are more theory based in their assessment and quantificati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Potassium Fluorosilicate
Potassium fluorosilicate is a chemical compound with the chemical formula . When doped with potassium hexafluoromanganate(IV) (, with ) it forms a narrow band red producing phosphor, (often abbreviated PSF or KSF), of economic interest due to its applicability in LED lighting and displays. Natural occurrence Occurs naturally as hiereatite, found in the Aeolian islands (Sicily, Italy). A hexagonal form demartinite has also been found at the rim of volcanic fumaroles in the same islands. The sea sponge Halichondria Moorei builds a skeleton of potassium fluorosilicate. Structure and properties According to analysis by Loehlin (1984), it has space group Fmm, with a0 = 0.8134 nm, V = 0.538.2 nm3 at 295 K. The Si-F bond length is 0.1683 nm. At high temperatures and pressures -beta and -gamma phases exist. Applications Potassium fluorosilicate has applications in porcelain manufacture, the preservation of timber, aluminium and magnesium smelting, and the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polysulfone
Polysulfones are a family of high performance thermoplastics. These polymers are known for their toughness and stability at high temperatures. Technically used polysulfones contain an aryl- SO2-aryl subunit. Due to the high cost of raw materials and processing, polysulfones are used in specialty applications and often are a superior replacement for polycarbonates. Three polysulfones are used industrially: polysulfone (PSU), polyethersulfone (PES/PESU) and polyphenylene sulfone (PPSU). They can be used in the temperature range from -100 to +200 °C and are used for electrical equipment, in vehicle construction and medical technology. They are composed of para-linked aromatics, sulfonyl groups and ether groups and partly also alkyl groups. Polysulfones have outstanding resistance to heat and oxidation, hydrolysis resistance to aqueous and alkaline media and good electrical properties. Nomenclature The term "polysulfone" is normally used for polyarylethersulfones (PAES), ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chemical File Format
A chemical file format is a type of data file which is used specifically for depicting molecular data. One of the most widely used is the chemical table file format, which is similar to ''Structure Data Format'' (SDF) files. They are text files that represent multiple chemical structure records and associated data fields. The XYZ file format is a simple format that usually gives the number of atoms in the first line, a comment on the second, followed by a number of lines with atomic symbols (or atomic numbers) and cartesian coordinates. The Protein Data Bank Format is commonly used for proteins but is also used for other types of molecules. There are many other types which are detailed below. Various software systems are available to convert from one format to another. Distinguishing formats Chemical information is usually provided as files or streams and many formats have been created, with varying degrees of documentation. The format is indicated in three ways:(see ) * ''f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Protein Segment Finder
The Protein Data Bank (PDB) is a database for the three-dimensional structural data of large biological molecules such as proteins and nucleic acids, which is overseen by the Worldwide Protein Data Bank (wwPDB). This structural data is obtained and deposited by biologists and biochemists worldwide through the use of experimental methodologies such as X-ray crystallography, NMR spectroscopy, and, increasingly, cryo-electron microscopy. All submitted data are reviewed by expert biocurators and, once approved, are made freely available on the Internet under the CC0 Public Domain Dedication. Global access to the data is provided by the websites of the wwPDB member organizations (PDBe, PDBj, RCSB PDB, and BMRB). The PDB is a key in areas of structural biology, such as structural genomics. Most major scientific journals and some funding agencies now require scientists to submit their structure data to the PDB. Many other databases use protein structures deposited in the PDB. For exampl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Point Spread Function
The point spread function (PSF) describes the response of a focused optical imaging system to a point source or point object. A more general term for the PSF is the system's impulse response; the PSF is the impulse response or impulse response function (IRF) of a focused optical imaging system. The PSF in many contexts can be thought of as the shapeless blob in an image that should represent a single point object. We can consider this as a spatial impulse response function. In functional terms, it is the spatial domain version (i.e., the inverse Fourier transform) of the Optical transfer function, optical transfer function (OTF) of an imaging system. It is a useful concept in Fourier optics, astronomy, astronomical imaging, medical imaging, electron microscope, electron microscopy and other imaging techniques such as dimension, 3D microscopy (like in confocal laser scanning microscopy) and fluorescence microscopy. The degree of spreading (blurring) in the image of a point ob ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Progressive Segmented Frame
Progressive segmented Frame (PsF, sF, SF) is a scheme designed to acquire, store, modify, and distribute progressive scan video using interlaced equipment. With PsF, a progressive frame is divided into two ''segments'', with the odd lines in one segment and the even lines in the other segment. Technically, the segments are equivalent to interlaced ''fields'', but unlike native interlaced video, there is no motion between the two fields that make up the video frame: both fields represent the same instant in time. This technique allows for a progressive picture to be processed through the same electronic circuitry that is used to store, process and route interlaced video. The term ''progressive segmented frame'' is used predominantly in relation to high-definition video, high definition video. In the world of standard-definition video, which traditionally has been using interlaced scanning, it is also known as ''quasi-interlace'', ''progressive recording'' or ''movie mode''. Other na ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Portable Sound Format
The Portable Sound Format (PSF) is a music file format ripped directly from video games from a variety of video game consoles. The format was originally used for PlayStation video games, but has since been adapted to support other systems. The PSF format was publicly documented by Neill Corlett in 2003, who also wrote a Winamp plug-in named "Highly Experimental" that plays PSF1 and PSF2 files. Generally, PSF files contain a number of samples and a music sequencer player program. This takes far less space than an equivalent streamed format of the same music (WAV, MP3) while still sounding high fidelity. Background music stored in PSF files can usually be looped forever, as the sequencer handles its own loop points. Several PSF sub-formats also have a ''miniPSF/PSFlib'' capability, wherein data used by multiple tracks is stored only once in an accompanying ''PSFlib'' file. Further differences are stored in a ''miniPSF'' file, which can be compressed via zlib to further increase st ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
