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The Southeastern Anatolia Project ( Turkish : G üneydoğu A nadolu P rojesi , GAP ) is a multi-sector integrated regional development project based on the concept of sustainable development for the 9 million people (2023) living in the Southeastern Anatolia region of Turkey . According to the Southeastern Anatolia Proje... | https://en.wikipedia.org/wiki/Southeastern_Anatolia_Project |
The Southern African Institute of Steel Construction (SAISC) is an organization which helps building and construction in South Africa by serving to promote and develop companies providing steel-related products and services to the industry. [ 1 ]
The institute was founded on 24 March 1956 when South Africa was still a... | https://en.wikipedia.org/wiki/Southern_African_Institute_of_Steel_Construction |
The Southern Local Supervoid is a tremendously large, nearly empty region of space (a void ).
It lies next to the Local Supercluster , which contains our galaxy the Milky Way . Its center is 96 megaparsecs away and the void is 112 megaparsecs in diameter across its narrowest width. [ 1 ] Its volume is very approximate... | https://en.wikipedia.org/wiki/Southern_Local_Supervoid |
Southern Research is a not-for-profit US 501(c)(3) research organization that conducts basic and applied research for commercial and non-commercial organizations across four divisions: Drug development , Drug discovery , Energy & Environment, and Engineering . [ 1 ]
Southern Research was founded in Birmingham, Alabama... | https://en.wikipedia.org/wiki/Southern_Research |
The Southern States Energy Board (SSEB) is a multi-state regional organization created by an interstate compact approved by sixteen states and two United States territories. The board is committed to promoting economic development and quality of life in the Southern United States through innovations in energy and the e... | https://en.wikipedia.org/wiki/Southern_States_Energy_Board |
The Southern Textile Exposition (1915-2004) was an intermittent trade fair for textile manufacturers held in Greenville , South Carolina .
By the early 20th century, American textile production had moved into the Carolina Piedmont from its earlier center in New England. [ 1 ] By the second decade of the century, South... | https://en.wikipedia.org/wiki/Southern_Textile_Exposition |
Southern blot is a method used for detection and quantification of a specific DNA sequence in DNA samples. This method is used in molecular biology . Briefly, purified DNA from a biological sample (such as blood or tissue) is digested with restriction enzymes , and the resulting DNA fragments are separated by electroph... | https://en.wikipedia.org/wiki/Southern_blot |
The southern celestial hemisphere , also called the Southern Sky , is the southern half of the celestial sphere ; that is, it lies south of the celestial equator . This arbitrary sphere, on which seemingly fixed stars form constellations , appears to rotate westward around a polar axis as the Earth rotates .
At all ti... | https://en.wikipedia.org/wiki/Southern_celestial_hemisphere |
The Southwell plot is a graphical method of determining experimentally a structure's critical load , without needing to subject the structure to near-critical loads. [ 1 ] The technique can be used for nondestructive testing of any structural elements that may fail by buckling . [ 2 ]
Consider a simply supported beam ... | https://en.wikipedia.org/wiki/Southwell_plot |
The South Wales West Local Section is one of 35 local sections of the Royal Society of Chemistry in the UK and Ireland. [ 1 ] It covers an area including the Local Authority areas of Bridgend, Carmarthenshire, Neath Port Talbot, Pembrokeshire and Swansea. [ 2 ]
The section was originally established in November 1918 a... | https://en.wikipedia.org/wiki/Southwest_and_Central_Wales_Local_Section_(Royal_Society_of_Chemistry) |
The southwestern blot, is a lab technique that involves identifying as well as characterizing DNA-binding proteins [ 1 ] by their ability to bind to specific oligonucleotide probes. Determination of molecular weight of proteins binding to DNA is also made possible by the technique. The name originates from a combinatio... | https://en.wikipedia.org/wiki/Southwestern_blot |
The South–North Water Transfer Project , also translated as the South-to-North Water Diversion Project , [ 1 ] is a multi-decade infrastructure mega-project in China that aims to channel 44.8 cubic kilometers (44.8 billion cubic meters) of fresh water each year [ 2 ] from the Yangtze River in southern China to the more... | https://en.wikipedia.org/wiki/South–North_Water_Transfer_Project |
A Soxhlet extractor is a piece of laboratory apparatus [ 1 ] invented in 1879 by Franz von Soxhlet . [ 2 ] It was originally designed for the extraction of a lipid from a solid material. Typically, Soxhlet extraction is used when the desired compound has a limited solubility in a solvent , and the impurity is insolubl... | https://en.wikipedia.org/wiki/Soxhlet_extractor |
The Sołtan argument is an astrophysical theory outlined in 1982 by Polish astronomer Andrzej Sołtan [ pl ] . It maintains that if quasars were powered by accretion onto a supermassive black hole , then such supermassive black holes must exist in our local universe as "dead" quasars.
As early as 1969, Donald Lynden-Bel... | https://en.wikipedia.org/wiki/Sołtan_argument |
Spa is a brand of mineral water from Spa , Belgium , and is owned by the Spadel Group . Spa mineral water has been bottled since the end of the 16th century and is very common in Western Europe and especially in the Benelux countries. It is also exported to other parts of the world. Spa Mineral Water is distributed in ... | https://en.wikipedia.org/wiki/Spa_(mineral_water) |
Space-based solar power ( SBSP or SSP ) is the concept of collecting solar power in outer space with solar power satellites (SPS) and distributing it to Earth . Its advantages include a higher collection of energy due to the lack of reflection and absorption by the atmosphere , the possibility of very little night, and... | https://en.wikipedia.org/wiki/Space-based_solar_power |
In chemistry , a space-filling model , also known as a calotte model , is a type of three-dimensional (3D) molecular model where the atoms are represented by spheres whose radii are proportional to the radii of the atoms and whose center-to-center distances are proportional to the distances between the atomic nuclei , ... | https://en.wikipedia.org/wiki/Space-filling_model |
SpaceTEC® is one of the Advanced Technological Education (ATE) Centers [ 1 ] funded by the National Science Foundation (NSF) for developing partnerships between academic institutions and industry partners to promote improvement in the education of science and engineering technicians at the undergraduate and secondary s... | https://en.wikipedia.org/wiki/SpaceTEC_National_Resource_Center_for_Aerospace_Technical_Education |
SpaceTurk , founded in 1998 as the Turkish Space Research Group, is a non-profit and volunteer group dedicated to working on space research. The group's activities so far are: | https://en.wikipedia.org/wiki/SpaceTurk |
Starshield is a business unit of SpaceX creating purpose-built low-Earth-orbit (LEO) satellites designed to provide new military space capabilities to U.S. and allied governments. [ 1 ] [ 2 ] [ 3 ] [ 4 ] Starshield was adapted from the global communications network Starlink but brings additional capabilities such as ta... | https://en.wikipedia.org/wiki/SpaceX_Starshield |
The SpaceX fairing recovery program was an experimental program by SpaceX , begun in 2017 in an effort to determine if it might be possible to economically recover and reuse expended launch vehicle payload fairings from suborbital space . The experimental program became an operational program as, by late 2020, the comp... | https://en.wikipedia.org/wiki/SpaceX_fairing_recovery_program |
Space is one of the elements of design of architecture , [ 1 ] as space is continuously studied for its usage. Architectural designs are created by carving space out of space, creating space out of space, and designing spaces by dividing this space using various tools, such as geometry , colours , and shapes . [ 2 ] | https://en.wikipedia.org/wiki/Space_(architecture) |
Space Data Integrator is a process/service platform or tool being developed by the US FAA to integrate space launch and reentry into the US National Airspace System . [ 1 ] It intends to oversee and manage airspace safety during space operations, ensuring the safety of vehicles more efficiently than manual processes. [... | https://en.wikipedia.org/wiki/Space_Data_Integrator |
The Space Nanotechnology Laboratory performs research in interference lithography and diffraction grating fabrication. It has fabricated the high energy transmission gratings for one of NASA 's Great Observatories, the Chandra X-Ray Observatory . It is also the home of the Nanoruler , a unique and high-precision grat... | https://en.wikipedia.org/wiki/Space_Nanotechnology_Laboratory |
Space Power Facility ( SPF ) is a NASA facility used to test spaceflight hardware under simulated launch and spaceflight conditions. The SPF is part of NASA's Neil A. Armstrong Test Facility, which in turn is part of the Glenn Research Center . The Neil A. Armstrong Test Facility and the SPF are located near Sandusky, ... | https://en.wikipedia.org/wiki/Space_Power_Facility |
The Space Safety Programme, formerly the Space Situational Awareness ( SSA ) programme, is the European Space Agency 's (ESA) initiative to monitor hazards from space, determine their risk, make this data available to the appropriate authorities and where possible, mitigate the threat. [ 1 ]
The SSA Programme was desi... | https://en.wikipedia.org/wiki/Space_Situational_Awareness_Programme |
The Space Telescope Science Data Analysis System (STSDAS) is an IRAF -based suite of astronomical software for reducing and analyzing astronomical data. [ 1 ] It contains general purpose tools and packages for processing data from the Hubble Space Telescope . STSDAS is produced by Space Telescope Science Institute (STS... | https://en.wikipedia.org/wiki/Space_Telescope_Science_Data_Analysis_System |
The Space Variable Objects Monitor ( SVOM ) is a small X-ray telescope satellite developed by China National Space Administration (CNSA), Chinese Academy of Sciences (CAS) and the French Space Agency ( CNES ), [ 5 ] launched on 22 June 2024 (07:00:00 UTC). [ 2 ]
SVOM will study the explosions of massive stars by analy... | https://en.wikipedia.org/wiki/Space_Variable_Objects_Monitor |
Space architecture is the theory and practice of designing and building inhabited environments in outer space . [ 1 ] This mission statement for space architecture was developed in 2002 by participants in the 1st Space Architecture Symposium, organized at the World Space Congress in Houston, by the Aerospace Architectu... | https://en.wikipedia.org/wiki/Space_architecture |
Space art, also known as astronomical art , is a genre of art that visually depicts the universe through various artistic styles. It may also refer to artworks sent into space . [ 1 ]
The development of space art was closely linked to advancements in telescope and imaging technology , which enabled more precise observ... | https://en.wikipedia.org/wiki/Space_art |
Space climate is the long-term variation in solar activity within the heliosphere , including the solar wind , the Interplanetary magnetic field (IMF), and their effects in the near-Earth environment, including the magnetosphere of Earth and the ionosphere , the upper and lower atmosphere, climate , and other related s... | https://en.wikipedia.org/wiki/Space_climate |
Space colonization (or extraterrestrial colonization ) is the settlement or colonization of outer space and astronomical bodies . The concept in its broad sense has been applied to any permanent human presence in space, such as a space habitat or other extraterrestrial settlements . [ 2 ] It may involve a process of oc... | https://en.wikipedia.org/wiki/Space_colonization |
A space command is a military organization with responsibility for space operations and warfare. A space command is typically a joint organization or organized within a larger military branch and is distinct from a fully independent space force . The world's first space command, the United States' Air Force Space Comma... | https://en.wikipedia.org/wiki/Space_command |
Space debris (also known as space junk , space pollution , [ 1 ] space waste , space trash , space garbage , or cosmic debris [ 2 ] ) are defunct human-made objects in space – principally in Earth orbit – which no longer serve a useful function. These include derelict spacecraft (nonfunctional spacecraft and abandoned ... | https://en.wikipedia.org/wiki/Space_debris |
Space domain awareness is the study and monitoring of satellites orbiting the Earth . It involves the detection, tracking, cataloging and identification of artificial objects, i.e. active/inactive satellites , spent rocket bodies, or fragmentation debris .
Space domain awareness accomplishes the following:
Systems in... | https://en.wikipedia.org/wiki/Space_domain_awareness |
Space dust measurement refers to the study of small particles of extraterrestrial material, known as micrometeoroids or interplanetary dust particles (IDPs), that are present in the Solar System . These particles are typically of micrometer to sub-millimeter size and are composed of a variety of materials including sil... | https://en.wikipedia.org/wiki/Space_dust_measurement |
Space environment is a branch of astronautics , aerospace engineering and space physics that seeks to understand and address conditions existing in space that affect the design and operation of spacecraft. A related subject, space weather , deals with dynamic processes in the solar-terrestrial system that can give rise... | https://en.wikipedia.org/wiki/Space_environment |
Space ethics, astroethics or astrobioethics [ 1 ] is a discipline of applied ethics that discusses the moral and ethical implications arising from astrobiological research , space exploration and space flight . [ 2 ] It deals with practical contemporary issues like the protection of the space environment [ 3 ] and hypo... | https://en.wikipedia.org/wiki/Space_ethics |
Space exploration utilizes astronomy and space technology to investigate outer space. [ 1 ] While the exploration of space is currently carried out mainly by astronomers with telescopes , its physical exploration is conducted both by uncrewed robotic space probes and human spaceflight . Space exploration, like its clas... | https://en.wikipedia.org/wiki/Space_exploration |
A space force is a military branch of a nation's armed forces that conducts military operations in outer space and space warfare . The world's first space force was the Russian Space Forces , established in 1992 as an independent military service. However, it lost its independence twice, first being absorbed into the S... | https://en.wikipedia.org/wiki/Space_force |
A space fountain is a proposed form of an extremely tall tower extending into space. As known materials cannot support a static tower with this height, a space fountain has to be an active structure : A stream of pellets is accelerated upwards from a ground station. At the top it is deflected downwards. The necessary f... | https://en.wikipedia.org/wiki/Space_fountain |
In architecture and structural engineering , a space frame or space structure ( 3D truss ) is a rigid, lightweight, truss-like structure constructed from interlocking struts in a geometric pattern . Space frames can be used to span large areas with few interior supports. Like the truss, a space frame is strong because ... | https://en.wikipedia.org/wiki/Space_frame |
Space geodesy is geodesy by means of sources external to Earth, mainly artificial satellites (in satellite geodesy ) but also quasars (in very-long-baseline interferometry , VLBI), visible stars (in stellar triangulation ), and the retroreflectors on the Moon (in lunar laser ranging , LLR).
This geodesy -related artic... | https://en.wikipedia.org/wiki/Space_geodesy |
In mathematics , physics and chemistry , a space group is the symmetry group of a repeating pattern in space, usually in three dimensions . [ 1 ] The elements of a space group (its symmetry operations ) are the rigid transformations of the pattern that leave it unchanged. In three dimensions, space groups are classifie... | https://en.wikipedia.org/wiki/Space_group |
In computational complexity theory , the space hierarchy theorems are separation results that show that both deterministic and nondeterministic machines can solve more problems in (asymptotically) more space, subject to certain conditions. For example, a deterministic Turing machine can solve more decision problems in ... | https://en.wikipedia.org/wiki/Space_hierarchy_theorem |
Solar mirrors in space can be used to change the amount of sunlight that reaches the Earth. The concept was first theorised in 1923 by physicist Hermann Oberth [ 1 ] [ 2 ] [ 3 ] [ 4 ] and later developed in the 1980s by other scientists. [ 5 ] Space mirrors can be used to increase or decrease the amount of solar energy... | https://en.wikipedia.org/wiki/Space_mirror |
A space station (or orbital station ) is a spacecraft which remains in orbit and hosts humans for extended periods of time. It therefore is an artificial satellite featuring habitation facilities . The purpose of maintaining a space station varies depending on the program. Most often space stations have been research s... | https://en.wikipedia.org/wiki/Space_station |
A space sunshade or sunshield is something that diverts or otherwise reduces some of the Sun's radiation , preventing it from hitting the Earth and thereby reducing its insolation , which results in reduced heating. Light can be diverted by different methods. The concept of the construction of sunshade as a method of ... | https://en.wikipedia.org/wiki/Space_sunshade |
Space sustainability aims to maintain the safety and health of the space environment , [ 1 ] as well as planetary environments. [ 2 ]
Similar to sustainability initiatives on Earth, space sustainability seeks to use the environment of space to meet the current needs of society without compromising the needs of future ... | https://en.wikipedia.org/wiki/Space_sustainability |
A space telescope (also known as space observatory ) is a telescope in outer space used to observe astronomical objects. Suggested by Lyman Spitzer in 1946, the first operational telescopes were the American Orbiting Astronomical Observatory , OAO-2 launched in 1968, and the Soviet Orion 1 ultraviolet telescope aboard ... | https://en.wikipedia.org/wiki/Space_telescope |
The residence time of a fluid parcel is the total time that the parcel has spent inside a control volume (e.g.: a chemical reactor , a lake , a human body ). The residence time of a set of parcels is quantified in terms of the frequency distribution of the residence time in the set, which is known as residence time dis... | https://en.wikipedia.org/wiki/Space_time_(chemical_engineering) |
Space vector modulation ( SVM ) is an algorithm for the control of pulse-width modulation (PWM), invented by Gerhard Pfaff, Alois Weschta, and Albert Wick in 1982. [ 1 ] [ 2 ] It is used for the creation of alternating current (AC) waveforms ; most commonly to drive 3 phase AC powered motors at varying speeds from DC u... | https://en.wikipedia.org/wiki/Space_vector_modulation |
Space weather is a branch of space physics and aeronomy , or heliophysics , concerned with the varying conditions within the Solar System and its heliosphere . This includes the effects of the solar wind , especially on the Earth's magnetosphere , ionosphere , thermosphere , and exosphere . [ 1 ] Though physically dist... | https://en.wikipedia.org/wiki/Space_weather |
A spacecraft is a vehicle that is designed to fly and operate in outer space . [ 1 ] Spacecraft are used for a variety of purposes, including communications , Earth observation , meteorology , navigation , space colonization , planetary exploration , and transportation of humans and cargo . All spacecraft except single... | https://en.wikipedia.org/wiki/Spacecraft |
Spacecraft attitude control is the process of controlling the orientation of a spacecraft (vehicle or satellite) with respect to an inertial frame of reference or another entity such as the celestial sphere , certain fields, and nearby objects, etc.
Controlling vehicle attitude requires actuators to apply the torques ... | https://en.wikipedia.org/wiki/Spacecraft_attitude_determination_and_control |
A spacecraft is a vehicle that is designed to fly and operate in outer space . [ 1 ] Spacecraft are used for a variety of purposes, including communications , Earth observation , meteorology , navigation , space colonization , planetary exploration , and transportation of humans and cargo . All spacecraft except single... | https://en.wikipedia.org/wiki/Spacecraft_communication |
Spacecraft design is a process where systems engineering principles are systemically applied in order to construct complex vehicles for missions involving travel , operation or exploration in outer space . This design process produces the detailed design specifications , schematics , and plans for the spacecraft system... | https://en.wikipedia.org/wiki/Spacecraft_design |
Spaced learning is a learning method in which highly condensed learning content is repeated three times, with two 10-minute breaks during which distractor activities such as physical activities are performed by the students. It is based on the temporal pattern of stimuli for creating long-term memories reported by R. ... | https://en.wikipedia.org/wiki/Spaced_learning |
Spaceflight (or space flight ) is an application of astronautics to fly objects, usually spacecraft , into or through outer space , either with or without humans on board . Most spaceflight is uncrewed and conducted mainly with spacecraft such as satellites in orbit around Earth , but also includes space probes for fli... | https://en.wikipedia.org/wiki/Spaceflight |
In physics , spacetime , also called the space-time continuum , is a mathematical model that fuses the three dimensions of space and the one dimension of time into a single four-dimensional continuum . Spacetime diagrams are useful in visualizing and understanding relativistic effects, such as how different observers p... | https://en.wikipedia.org/wiki/Spacetime |
In physics, curved spacetime is the mathematical model in which, with Einstein 's theory of general relativity , gravity naturally arises, as opposed to being described as a fundamental force in Newton's static Euclidean reference frame . Objects move along geodesics —curved paths determined by the local geometry of sp... | https://en.wikipedia.org/wiki/Spacetime_curvature |
A spacetime diagram is a graphical illustration of locations in space at various times, especially in the special theory of relativity . Spacetime diagrams can show the geometry underlying phenomena like time dilation and length contraction without mathematical equations.
The history of an object's location through ti... | https://en.wikipedia.org/wiki/Spacetime_diagram |
Spacetime symmetries are features of spacetime that can be described as exhibiting some form of symmetry . The role of symmetry in physics is important in simplifying solutions to many problems. Spacetime symmetries are used in the study of exact solutions of Einstein's field equations of general relativity . Spacetime... | https://en.wikipedia.org/wiki/Spacetime_symmetries |
Spaceworthiness , [ 1 ] [ 2 ] or aerospaceworthiness , [ 3 ] is a property , or ability of a spacecraft to perform to its design objectives and navigate successfully through both the space environment and the atmosphere as a part of a journey to or from space. The concept may less commonly be extended to other devices,... | https://en.wikipedia.org/wiki/Spaceworthiness |
A spaghetti bridge is an architectural model of a bridge , made of uncooked spaghetti or other hard, dry, straight noodles. Bridges are constructed for both educational experiments and competitions. The aim is usually to construct a bridge with a specific quantity of materials over a specific span, that can sustain a l... | https://en.wikipedia.org/wiki/Spaghetti_bridge |
Spaghetti code is a pejorative phrase for difficult-to- maintain and unstructured computer source code . Code being developed with poor structure can be due to any of several factors, such as volatile project requirements, lack of programming style rules, and software engineers with insufficient ability or experience. ... | https://en.wikipedia.org/wiki/Spaghetti_code |
Paracelsianism (also Paracelsism ; German: Paracelsismus ) was an early modern medical movement based on the theories and therapies of Paracelsus .
It developed in the second half of the 16th century, during the decades following Paracelsus's death in 1541, and it flourished during the first half of the 17th century, ... | https://en.wikipedia.org/wiki/Spagyric |
Spall are fragments of a material that are broken off a larger solid body . It can be produced by a variety of mechanisms, including as a result of projectile impact, corrosion , weathering , cavitation , or excessive rolling pressure (as in a ball bearing ). Spalling and spallation both describe the process of surface... | https://en.wikipedia.org/wiki/Spall |
Spalting is any form of wood coloration caused by fungi . Although primarily found in dead trees , spalting can also occur in living trees under stress . Although spalting can cause weight loss and strength loss in the wood, the unique coloration and patterns of spalted wood are sought by woodworkers . [ 1 ]
Spalting ... | https://en.wikipedia.org/wiki/Spalting |
In engineering , span is the distance between two adjacent structural supports (e.g., two piers ) of a structural member (e.g., a beam ). Span is measured in the horizontal direction either between the faces of the supports ( clear span ) or between the centers of the bearing surfaces ( effective span ): [ 1 ]
A span ... | https://en.wikipedia.org/wiki/Span_(engineering) |
In evolutionary biology , a spandrel is a phenotypic trait that is a byproduct of the evolution of some other characteristic, rather than a direct product of adaptive selection . Stephen Jay Gould and Richard Lewontin brought the term into biology in their 1979 paper " The Spandrels of San Marco and the Panglossian Par... | https://en.wikipedia.org/wiki/Spandrel_(biology) |
In mathematics , Spanier–Whitehead duality is a duality theory in homotopy theory , based on a geometrical idea that a topological space X may be considered as dual to its complement in the n - sphere , where n is large enough. Its origins lie in Alexander duality theory, in homology theory , concerning complements in ... | https://en.wikipedia.org/wiki/Spanier–Whitehead_duality |
Spanish Astrobiology Center (Spanish: Centro de Astrobiología ( CAB )) is a state-run institute in Spain dedicated to astrobiology research, and it is part of the National Institute of Aerospace Technology (INTA) as well as the Spanish National Research Council (CSIC). [ 1 ] It was created in 1999 and it is affiliated ... | https://en.wikipedia.org/wiki/Spanish_Astrobiology_Center |
The Spanish Royal Society of Chemistry (RSEQ) is a Spanish scientific society dedicated to the development and dissemination of chemistry , in its aspect of pure science and in its applications. It originated in 1980 after the split of the Spanish Royal Society of Physics and Chemistry which itself was founded in 1903.... | https://en.wikipedia.org/wiki/Spanish_Royal_Society_of_Chemistry |
During the Third Rif War in Spanish Morocco between 1921 and 1927, the Spanish Army of Africa deployed chemical weapons in an attempt to put down the Berber rebellion against colonial rule in the region of the Rif led by the guerrilla Abd el-Krim . [ 1 ] In 1921, following the Rifian victory in the Battle of Annual , w... | https://en.wikipedia.org/wiki/Spanish_use_of_chemical_weapons_in_the_Rif_War |
A spar is a marine structure, used for floating oil/gas platforms . Named after navigation channel Spar buoys , spar platforms were developed as an extreme deepwater alternative to conventional platforms. [ 1 ] The deep draft design of spars makes them less affected by wind, wave, and currents and allows for both dry t... | https://en.wikipedia.org/wiki/Spar_(platform) |
A spare part , spare , service part , repair part , or replacement part , is an interchangeable part that is kept in an inventory and used for the repair or refurbishment of defective equipment/units. Spare parts are an important feature of logistics engineering and supply chain management , often comprising dedicated ... | https://en.wikipedia.org/wiki/Spare_part |
In chemistry , sparging , also known as gas flushing in metallurgy , is a technique in which a gas is bubbled through a liquid in order to remove other dissolved gas(es) and/or dissolved volatile liquid(s) from that liquid. It is a method of degassing . According to Henry's law , the concentration of each gas in a liqu... | https://en.wikipedia.org/wiki/Sparging_(chemistry) |
A spark-gap transmitter is an obsolete type of radio transmitter which generates radio waves by means of an electric spark . [ 1 ] [ 2 ] Spark-gap transmitters were the first type of radio transmitter, and were the main type used during the wireless telegraphy or "spark" era, the first three decades of radio , from 188... | https://en.wikipedia.org/wiki/Spark-gap_transmitter |
Spark is an open-source instant messaging program (based on the XMPP protocol) that allows users to communicate in real time. [ 4 ]
It can be integrated with the Openfire server to provide additional features [ 5 ] such as controlling the various Spark functionalities from a central management console or integrating w... | https://en.wikipedia.org/wiki/Spark_(XMPP_client) |
SparrowIQ is a packet-based traffic analysis and network performance monitoring solution that provides network managers with near real-time traffic visibility into network usage based on conversations, applications, users and class of service. [ 1 ] [ 2 ]
The product was developed by Solana Networks ( Ottawa, Ontario ... | https://en.wikipedia.org/wiki/Sparrowiq |
A Sparse graph code is a code which is represented by a sparse graph .
Any linear code can be represented as a graph, where there are two sets of nodes - a set representing the transmitted bits and another set representing the constraints that the transmitted bits have to satisfy. The state of the art classical error-... | https://en.wikipedia.org/wiki/Sparse_graph_code |
In mathematics, a sparse polynomial (also lacunary polynomial [ 1 ] or fewnomial [ 2 ] ) is a polynomial that has far fewer terms than its degree and number of variables would suggest. For example, x 10 + 3 x 3 + 1 {\displaystyle x^{10}+3x^{3}+1} is a sparse polynomial, as it is a trinomial with a degree of 10 {\displa... | https://en.wikipedia.org/wiki/Sparse_polynomial |
A sparse ruler is a ruler in which some of the distance marks may be missing. More abstractly, a sparse ruler of length L {\displaystyle L} with m {\displaystyle m} marks is a sequence of integers a 1 , a 2 , . . . , a m {\displaystyle a_{1},a_{2},...,a_{m}} where 0 = a 1 < a 2 < . . . < a m = L {\displaystyle 0=a_{1}... | https://en.wikipedia.org/wiki/Sparse_ruler |
A sparse voxel octree ( SVO ) is a 3D computer graphics rendering technique using a raycasting or sometimes a ray tracing approach into an octree data representation.
The technique generally relies on generating and processing the hull of points (sparse voxels ) which are visible, or may be visible, given the resoluti... | https://en.wikipedia.org/wiki/Sparse_voxel_octree |
Spartan is a molecular modelling and computational chemistry application from Wavefunction. [ 2 ] It contains code for molecular mechanics , semi-empirical methods , ab initio models , [ 3 ] density functional models , [ 4 ] post-Hartree–Fock models, [ 5 ] thermochemical recipes including G3(MP2) [ 6 ] and T1, [ 7 ] an... | https://en.wikipedia.org/wiki/Spartan_(chemistry_software) |
The Spartan Packet Radio Experiment ( SPRE ) was an amateur radio communications experiment that flew on the Space Shuttle Endeavour ' s STS-72 mission as part of NASA 's Spartan/OAST-Flyer spacecraft in January 1996. [ 1 ] The experiment was intended to test the tracking of satellites via amateur packet radio ( Automa... | https://en.wikipedia.org/wiki/Spartan_Packet_Radio_Experiment |
A spaser or plasmonic laser is a type of laser which aims to confine light at a subwavelength scale far below Rayleigh's diffraction limit of light , by storing some of the light energy in electron oscillations called surface plasmon polaritons . [ 1 ] [ 2 ] [ 3 ] [ 4 ] [ 5 ] The phenomenon was first described by David... | https://en.wikipedia.org/wiki/Spaser |
Spathulenol is a tricyclic sesquiterpene alcohol which has a basic skeleton similar to the azulenes . It occurs in oregano among other plants.
A volatile oil was extracted from mugwort distillery ( Artemisia vulgaris ) and tarragon ( Artemisia dracunculus ), from which the sesquiterpene alcohol spathulenol was isolat... | https://en.wikipedia.org/wiki/Spathulenol |
The spatial-numerical association of response codes (SNARC) is an example of the spatial organisation of magnitude information. Put simply, when presented with smaller numbers (0 to 4), people tend to respond faster if those stimuli are associated with the left extrapersonal hemiside of their perceived surroundings; wh... | https://en.wikipedia.org/wiki/Spatial-numerical_association_of_response_codes |
Spatial anxiety (sometimes also referred to as spatial orientation discomfort [ 1 ] ) is a sense of anxiety an individual experiences while processing environmental information contained in one's geographical space (in the sense of Montello's classification of space), [ 2 ] with the purpose of navigation and orientatio... | https://en.wikipedia.org/wiki/Spatial_anxiety |
Spatial capacity is an indicator of " data intensity" in a transmission medium. It is usually used in conjunction with wireless transport mechanisms. This is analogous to the way that lumens per square meter determine illumination intensity. [ 1 ]
Spatial capacity focuses not only on bit rates for data transfer but on... | https://en.wikipedia.org/wiki/Spatial_capacity |
A spatial data infrastructure ( SDI ), also called geospatial data infrastructure , [ 1 ] is a data infrastructure implementing a framework of geographic data , metadata , users and tools that are interactively connected in order to use spatial data in an efficient and flexible way. Another definition is "the technolog... | https://en.wikipedia.org/wiki/Spatial_data_infrastructure |
A spatial decision support system ( SDSS ) is an interactive, computer-based system designed to assist in decision making while solving a semi-structured spatial problem. [ 1 ] It is designed to assist the spatial planner with guidance in making land use decisions. A system which models decisions could be used to help... | https://en.wikipedia.org/wiki/Spatial_decision_support_system |
In the physics of continuous media , spatial dispersion is a phenomenon where material parameters such as the permittivity or conductivity have dependence on wavevector . Normally such a dependence is assumed to be absent for simplicity, however spatial dispersion exists to varying degrees in all materials.
The underl... | https://en.wikipedia.org/wiki/Spatial_dispersion |
Spatial ecology studies the ultimate distributional or spatial unit occupied by a species . In a particular habitat shared by several species, each of the species is usually confined to its own microhabitat or spatial niche because two species in the same general territory cannot usually occupy the same ecological nich... | https://en.wikipedia.org/wiki/Spatial_ecology |
In mathematics , physics , and engineering , spatial frequency is a characteristic of any structure that is periodic across position in space . The spatial frequency is a measure of how often sinusoidal components (as determined by the Fourier transform ) of the structure repeat per unit of distance.
The SI unit of sp... | https://en.wikipedia.org/wiki/Spatial_frequency |
Spatial heterogeneity is a property generally ascribed to a landscape or to a population . It refers to the uneven distribution of various concentrations of each species within an area. A landscape with spatial heterogeneity has a mix of concentrations of multiple species of plants or animals (biological), or of terrai... | https://en.wikipedia.org/wiki/Spatial_heterogeneity |
Spatial multiplexing or space-division multiplexing ( SM , SDM or SMX ) is a multiplexing technique in MIMO wireless communication , fiber-optic communication and other communications technologies used to transmit independent channels separated in space.
In fiber-optic communication SDM refers to the usage of the tran... | https://en.wikipedia.org/wiki/Spatial_multiplexing |
A spatial relation [ 1 ] [ 2 ] specifies how some object is located in space in relation to some reference object. When the reference object is much bigger than the object to locate, the latter is often represented by a point. The reference object is often represented by a bounding box .
In Anatomy it might be the cas... | https://en.wikipedia.org/wiki/Spatial_relation |
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