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Expander
Expander may refer to: *Dynamic range compression operated in reverse *Part of the process of signal compression *Part of the process of companding *A component used to connect SCSI computer data storage, devices together *Turboexpander, a turbine for high-pressure gas *Expander graph, a sparse graph used in the combinatorics branch of mathematics *StuffIt Expander, a computer file decompressor software utility * "Expander" (song), a 1994 song by The Future Sound of London * Orthodontic expander, a device to widen the upper jaw *Disclosure widget A disclosure widget, expander, or disclosure triangle is a graphical control element that is used to show or hide a collection of "child" widgets in a specific area of the interface. The widget hides non-essential settings or information and thu ..., a widget that hides non-essential settings or information, also known as an expander See also * Xpander (other) {{disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Expander Graph
In graph theory, an expander graph is a sparse graph that has strong connectivity properties, quantified using vertex, edge or spectral expansion. Expander constructions have spawned research in pure and applied mathematics, with several applications to complexity theory, design of robust computer networks, and the theory of error-correcting codes. Definitions Intuitively, an expander graph is a finite, undirected multigraph in which every subset of the vertices that is not "too large" has a "large" boundary. Different formalisations of these notions give rise to different notions of expanders: ''edge expanders'', ''vertex expanders'', and ''spectral expanders'', as defined below. A disconnected graph is not an expander, since the boundary of a connected component is empty. Every connected graph is an expander; however, different connected graphs have different expansion parameters. The complete graph has the best expansion property, but it has largest possible degree. Informal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
StuffIt Expander
StuffIt Expander is a proprietary, freeware, closed source, decompression software utility developed by Allume Systems (a subsidiary of Smith Micro Software formerly known as Aladdin Systems). It runs on the classic Mac OS, macOS, and Microsoft Windows. Prior to 2011, a Linux version had also been available for download. The latest version for each Mac platform is as follows: * 16.2 for OS X 10.11+ (as of December 2020); * 16.0.5 for Mac OS X 10.8+; * 15.0.7 (2011) for Mac OS X 10.6.8+; * 15.0.4 (2011) for Mac OS X 10.5+; * 14.0.1 (2010) for Mac OS X 10.4+; * 10.0.2 for Mac OS X 10.3+; * 8.0.2 for Mac OS X 10.0+; * 7.0.3 for Mac OS 8.6+; * 6.0.1 for Mac OS 8.1+ (PowerPC only); * 5.5.1 for System 7.1+ (68020 and up, PowerPC); * 4.5 for System 6+ (compatible with all 68k processors). StuffIt has been a target of criticism and dissatisfaction from Mac users in the past as the file format changes frequently, notably during the introduction of StuffIt version 5.0. Expander 5 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Expander (song)
"Expander" is a 1994 song by British electronic music group The Future Sound of London, taken from their 1992 album, ''Accelerator (The Future Sound of London album), Accelerator''. The single was released along with a remixed version and two other songs: "Moscow" and "Central Industrial". ''Accelerator'' was subsequently re-released in the US in 1996. Track listing # Expander (Radio Edit) (3:48) # Expander (Remix) (4:53) # Moscow (Remix) (4:55) # Central Industrial (4:22) Crew *Written, performed & produced by FSOL *Photography: FSOL Private Collection. Artwork design at Red Hot. Charts References External links * {{authority control The Future Sound of London songs 1994 singles 1992 songs ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Orthodontic Expander
A palatal expander is a device in the field of orthodontics which is used to widen the upper jaw (maxilla) so that the bottom and upper teeth will fit together better. This is a common orthodontic procedure. Although the use of an expander is most common in children and adolescents 8-18 years of age, it can also be used in adults, although expansion is slightly more uncomfortable and takes longer. A patient who would rather not wait several months for the end result by a palatal expander may be able to opt for a surgical separation of the maxilla. Use of a palatal expander is most often followed by dental braces, braces to then straighten the teeth. It is believed that expansion therapy should be started in patients either before or during their peak growth spurt. To obtain maximal skeletal changes, the therapy is typically initiated at a very early age. Expansion therapy performed after the peak growth spurt will lead to more dental changes than skeletal which leads to tipping of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Disclosure Widget
A disclosure widget, expander, or disclosure triangle is a graphical control element that is used to show or hide a collection of "child" widgets in a specific area of the interface. The widget hides non-essential settings or information and thus makes the dialog less cluttered. The disclosure widget may be ''expanded'' or ''collapsed'' by the user; when this occurs, the containing window may be expanded to accommodate the increased space requirement. The state of the widget is often signified by a label with a triangle next to it, pointing sideways when it is collapsed and downward when it is expanded (corresponding to the widget's current state), or a button with an arrow pointing downward when it is collapsed and upward when it is expanded (corresponding to how the widget will change state if the button is clicked). Some disclosure widgets can appear as a plus button when collapsed and a minus button when expanded. In some implementations, the widget may be able to remember ... [...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 in 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. Types There are two types of compression, downward and upward. Bot ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Signal Compression
Signal compression is the use of various techniques to increase the quality or quantity of signal parameters transmitted through a given telecommunications channel. Types of signal compression include: *Bandwidth compression *Data compression *Dynamic range compression *Gain compression *Image compression *Lossy compression *One-way compression function {{sia Compression 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 ... Telecommunications techniques he:דחיסת אותות ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Companding
In telecommunication and signal processing, companding (occasionally called compansion) is a method of mitigating the detrimental effects of a channel with limited dynamic range. The name is a portmanteau of the words compressing and expanding, which are the functions of a compander at the transmitting and receiving end respectively. The use of companding allows signals with a large dynamic range to be transmitted over facilities that have a smaller dynamic range capability. Companding is employed in telephony and other audio applications such as professional wireless microphones and analog recording. How it works The dynamic range of a signal is compressed before transmission and is expanded to the original value at the receiver. The electronic circuit that does this is called a compander and works by compressing or expanding the dynamic range of an analog electronic signal such as sound recorded by a microphone. One variety is a triplet of amplifiers: a logarithmic amplifier ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Turboexpander
A turboexpander, also referred to as a turbo-expander or an expansion turbine, is a centrifugal or axial-flow turbine, through which a high-pressure gas is expanded to produce work that is often used to drive a compressor or generator. Because work is extracted from the expanding high-pressure gas, the expansion is approximated by an isentropic process (i.e., a constant-entropy process), and the low-pressure exhaust gas from the turbine is at a very low temperature, −150 °C or less, depending upon the operating pressure and gas properties. Partial liquefaction of the expanded gas is not uncommon. Turboexpanders are widely used as sources of refrigeration in industrial processes such as the extraction of ethane and natural-gas liquids (NGLs) from natural gas, the liquefaction of gases (such as oxygen, nitrogen, helium, argon and krypton) and other low-temperature processes. Turboexpanders currently in operation range in size from about 750 W to about 7.5 MW (1 hp to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
