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Compression (botany)
Compression may refer to: Physical science *Compression (physics), size reduction due to forces *Compression member, a structural element such as a column *Compressibility, susceptibility to compression *Gas compression *Compression ratio, of a combustion engine *Compression (geology) *Compression or compressive strength Information science *Bandwidth compression, reducing effort in data transmission *Data compression, reducing the data required for information **Audio compression (data), reducing the data required for audio **Compression artifact, defect in data due to compression **Image compression, of digital images **Video compression *One-way compression function, a cryptographic primitive Medicine *Brain compression, a medical condition *Compression bandage *Pressing on the lower abdominal area in an intravenous pyelogram *Cold compression therapy, for minor injuries Other *Amplifier gain compression, due to nonlinearity *Compression (dance), several techniques *Compressi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Compression (physics)
In mechanics, compression is the application of balanced inward ("pushing") forces to different points on a material or Structural system, structure, that is, forces with no Net force, net sum or torque directed so as to reduce its size in one or more directions.Ferdinand Pierre Beer, Elwood Russell Johnston, John T. DeWolf (1992), "Mechanics of Materials". (Book) McGraw-Hill Professional, It is contrasted with tension (physics), tension or traction, the application of balanced outward ("pulling") forces; and with shear stress, shearing forces, directed so as to displace layers of the material parallel to each other. The compressive strength of materials and structures is an important engineering consideration. In uniaxial compression, the forces are directed along one direction only, so that they act towards decreasing the object's length along that direction. The compressive forces may also be applied in multiple directions; for example inwards along the edges of a plate or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Compression Bandage
A bandage is a piece of material used either to support a medical device such as a dressing or splint, or on its own to provide support for the movement of a part of the body. When used with a dressing, the dressing is applied directly on a wound, and a bandage is used to hold the dressing in place. Other bandages are used without dressings, such as elastic bandages that are used to reduce swelling or provide support to a sprained ankle. Tight bandages can be used to slow blood flow to an extremity, such as when a leg or arm is bleeding heavily. Bandages are available in a wide range of types, from generic cloth strips to specialized shaped bandages designed for a specific limb or part of the body. Bandages can often be improvised as the situation demands, using clothing, blankets or other material. In American English, the word ''bandage'' is often used to indicate a small gauze dressing attached to an adhesive bandage. Types Gauze bandage (common gauze roller bandage) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Compressor (other)
{{Disambiguation ...
A compressor is a mechanical device that increases the pressure of a gas by reducing its volume. Compressor may also refer to: * A device that performs Compression (other) * Compressor (audio signal processor), for dynamic range compression * Compressor (software), a video and audio media compression and encoding application See also * * * Compression (other) * Compaction (other) * Decompression (other) * Expansion (other) * Kompressor (other) * Compressor Hot Springs, a place in California, U.S. * Supercharger * Turbocharger In an internal combustion engine, a turbocharger (also known as a turbo or a turbosupercharger) is a forced induction device that is powered by the flow of exhaust gases. It uses this energy to compress the intake air, forcing more air into th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Compression Garment
Compression garments are pieces of clothing that fit tightly around the skin. In medical contexts, compression garments provide support for people who have to stand for long periods or have poor Circulatory system, circulation. These come in varying degrees of compression, and higher degree compression sleeves, such as sleeves that provide compression of 20–30 mmHg or higher, typically require a doctor's prescription. Compression garments worn on the legs can help prevent deep vein thrombosis and reduce swelling, especially while traveling. Compression can also be used for post surgeries, to help with the healing process. Garment usage varies per patient but can be worn up to a year. There are also second stage compression garments, that are every day wear. In sports, form-fitting compression sportswear, usually made of spandex, is commonly worn by athletes and in exercise to prevent Chafing (skin), chafing and rashes. Maternity wear A bellyband, wrap, or abdominal binder is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Compress
compress is a Unix shell compression program based on the LZW compression algorithm. Compared to gzip's fastest setting, compress is slightly slower at compression, slightly faster at decompression, and has a significantly lower compression ratio. 1.8 MiB of memory is used to compress the Hutter Prize data, slightly more than gzip's slowest setting. The uncompress utility will restore files to their original state after they have been compressed using the ''compress'' utility. If no files are specified, the standard input will be uncompressed to the standard output. Description Files compressed by ''compress'' are typically given the extension ".Z" (modeled after the earlier pack program which used the extension ".z"). Most ''tar'' programs will pipe their data through ''compress'' when given the command line option "-Z". (The ''tar'' program in its own does not compress; it just stores multiple files within one tape archive.) Files can be returned to their original ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Compaction (other)
Compaction may refer to: * Soil compaction, for mechanically induced compaction near the ground surface * Compaction of ceramic powders * Compaction (geology), part of the process of lithification involving mechanical dewatering of a sediment by progressive loading under several km of geomaterial * Faecal compaction, an extreme form of constipation * Waste compaction, related to garbage * Cold compaction, powder compaction at low temperatures * Data compaction, related to computers ** Curve-fitting compaction * Compactor, a device that performs compaction * Compaction a cellular differentiation process in the early embryo See also * Compact (other) * Compactification (other) * Impaction (other) Impaction may refer to: * Impaction (animals), blockage of the digestive tract of animals * Fecal impaction, a solid, immobile bulk of feces or indigestible matter that can develop in the rectum * Dental impaction, the failure of a tooth fully to e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dynamic Range Compression
Dynamic range compression (DRC) or simply compression is an audio signal processing operation that reduces the volume of loud sounds or amplifies quiet sounds, thus reducing or ''compressing'' an audio signal's dynamic range. Compression is commonly used in sound recording and reproduction, broadcasting, sound reinforcement system, live sound reinforcement and some instrument amplifiers. A dedicated electronic hardware unit or audio software that applies compression is called a compressor. In the 2000s, compressors became available as software plugins that run in digital audio workstation software. In recorded and live music, compression parameters may be adjusted to change the way they affect sounds. Compression and limiting are identical in process but different in degree and perceived effect. A limiter is a compressor with a high #Ratio, ratio and, generally, a short #Attack and release, attack time. Compression is used to improve performance and clarity in public address ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Compression (phonetics)
In phonology, syncope (; from ) is the loss of one or more sounds from the interior of a word, especially the loss of an unstressed vowel. It is found in both synchronic and diachronic analyses of languages. Its opposite, whereby sounds are added, is epenthesis. Synchronic analysis Synchronic analysis studies linguistic phenomena at one moment of a language's history, usually the present, in contrast to diachronic analysis, which studies a language's states and the patterns of change across a historical timeframe. In modern languages, syncope occurs in inflection, poetry, and informal speech. Inflections In languages such as Irish and Hebrew, the process of inflection can cause syncope: Verbs: * Irish: (to play) should become * (I play). However, the addition of the causes syncope and the second-last syllable vowel is lost so becomes . * Hebrew: (katav), (he) wrote, becomes (katvu), (they) wrote, when the third-person plural ending (-u) is added. Nouns: * Irish: ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Compression (functional Analysis)
In functional analysis, the compression of a linear operator ''T'' on a Hilbert space to a subspace ''K'' is the operator :P_K T \vert_K : K \rightarrow K , where P_K : H \rightarrow K is the orthogonal projection onto ''K''. This is a natural way to obtain an operator on ''K'' from an operator on the whole Hilbert space. If ''K'' is an invariant subspace for ''T'', then the compression of ''T'' to ''K'' is the restricted operator ''K→K'' sending ''k'' to ''Tk''. More generally, for a linear operator ''T'' on a Hilbert space H and an isometry ''V'' on a subspace W of H, define the compression of ''T'' to W by :T_W = V^*TV : W \rightarrow W, where V^* is the adjoint of ''V''. If ''T'' is a self-adjoint operator, then the compression T_W is also self-adjoint. When ''V'' is replaced by the inclusion map I: W \to H, V^* = I^*=P_K : H \to W, and we acquire the special definition above. See also * Dilation wiktionary:dilation, Dilation (or dilatation) may refer to: Physiol ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Compression (dance)
This is a list of dance terms that are not names of dances or types of dances. See List of dances and List of dance style categories for those. This glossary lists terms used in various types of ballroom partner dances, leaving out terms of highly evolved or specialized dance forms, such as ballet, tap dancing, and square dance, square dancing, which have their own elaborate terminology. See also: * Glossary of ballet terms * Glossary of dance moves Abbreviations *3T – #Three Ts, Three Ts *CBL – Cross-body lead *CBM – Contra body movement *CBMP – Contra body movement position *COG – Center of gravity *CPB – #Center point of balance, Center point of balance *CPP – Counter promenade position *DC – Direction of movement (ballroom dancing), Diagonally to center *DW – Direction of movement (ballroom dancing), Diagonally to wall *IDSF – World DanceSport Federation, International DanceSport Federation *IDTA – International Dance Teachers Association * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gain Compression
Gain compression is a reduction in ''differential'' or ''slope'' gain caused by nonlinearity of the transfer function of an amplifying device for large-signal inputs. Overview When overdriving an amplifier beyond its the linear range, gain compression will occur due to nonlinear circuit characteristics. The output of large amplitude inputs will be less than expected than using the small signals gain of the amplifier, such that an increase in input will not be matched by a proportional increase in output. Gain compression is the difference between the ideal linear power transfer curve and the real circuit's power transfer curve. An important gain compression parameter is the OP1dB, which is the power input that results in a 1 dB compression of the output power (OP), corresponding to a gain ratio of 10 = 79.4%. Harmonic distortion results from nonlinear transfer curves. And once an amplifier's maximum amplitude is reached, signals will be clipped, resulting in even ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cold Compression Therapy
Cold compression therapy, also known as hilotherapy, combines two of the principles of rest, ice, compression, elevation to reduce pain and swelling from a sports or activity injury to soft tissues and is recommended by orthopedic surgeons following surgery. The therapy is especially useful for sprains, strains, pulled muscles and pulled ligaments. Cold compression Cold compression is a combination of cryotherapy and static compression, commonly used for the treatment of pain and inflammation after acute injury or surgical procedures. Cryotherapy, the use of ice or cold in a therapeutic setting, has become one of the most common treatments in orthopedic medicine. The primary reason for using cryotherapy in acute injury management is to lower the temperature of the injured tissue, which reduces the tissue's metabolic rate and helps the tissue to survive the period following the injury. It is well documented that metabolic rate decreases by application of cryotherapy. A stud ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
