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https://en.wikipedia.org/wiki/TUGboat | TUGboat (, DOI prefix 10.47397) is a journal published three times per year by the TeX Users Group. It covers a wide range of topics in digital typography relevant to the TeX typesetting system. The editor is Barbara Beeton.
See also
The PracTeX Journal
External links
TUGboat home page
List of TeX-related publicati... |
https://en.wikipedia.org/wiki/Harvard%20Mark%20II | The Harvard Mark II, also known as the Aiken Relay Calculator, was an electromechanical computer built under the direction of Howard Aiken at Harvard University, completed in 1947. It was financed by the United States Navy and used for ballistic calculations at Naval Proving Ground Dahlgren. Howard Aiken and Grace Hopp... |
https://en.wikipedia.org/wiki/Harvard%20Mark%20IV | The Harvard Mark IV was an electronic stored-program computer built by Harvard University under the supervision of Howard Aiken for the United States Air Force. The computer was finished being built in 1952. It stayed at Harvard, where the Air Force used it extensively.
The Mark IV was all electronic. The Mark IV use... |
https://en.wikipedia.org/wiki/Futures%20and%20promises | In computer science, future, promise, delay, and deferred refer to constructs used for synchronizing program execution in some concurrent programming languages. They describe an object that acts as a proxy for a result that is initially unknown, usually because the computation of its value is not yet complete.
The ter... |
https://en.wikipedia.org/wiki/Helminthology | Helminthology is the study of parasitic worms (helminths). The field studies the taxonomy of helminths and their effects on their hosts.
The origin of the first compound of the word is the Greek ἕλμινς - helmins, meaning "worm".
In the 18th and early 19th century there was wave of publications on helminthology; this ... |
https://en.wikipedia.org/wiki/How%20to%20Design%20Programs | How to Design Programs (HtDP) is a textbook by Matthias Felleisen, Robert Bruce Findler, Matthew Flatt, and Shriram Krishnamurthi on the systematic design of computer programs. MIT Press published the first edition in 2001, and the second edition in 2018, which is freely available online and in print. The book introduc... |
https://en.wikipedia.org/wiki/Amplified%20fragment%20length%20polymorphism | AFLP-PCR or just AFLP is a PCR-based tool used in genetics research, DNA fingerprinting, and in the practice of genetic engineering. Developed in the early 1990s by KeyGene, AFLP uses restriction enzymes to digest genomic DNA, followed by ligation of adaptors to the sticky ends of the restriction fragments. A subset of... |
https://en.wikipedia.org/wiki/GeneXus | GeneXus is a low code, cross-platform, knowledge representation-based development tool, mainly oriented towards enterprise-class applications for web applications, smart devices, and the Microsoft Windows platform.
GeneXus uses mostly declarative language to generate native code for multiple environments. It includes ... |
https://en.wikipedia.org/wiki/Spaghetti%20sort | Spaghetti sort is a linear-time, analog algorithm for sorting a sequence of items, introduced by A. K. Dewdney in his Scientific American column. This algorithm sorts a sequence of items requiring O(n) stack space in a stable manner. It requires a parallel processor.
Algorithm
For simplicity, assume we are sorting a l... |
https://en.wikipedia.org/wiki/Xbox%20Linux | Xbox Linux was a project that ported the Linux operating system to the Xbox video game console. Because the Xbox uses a digital signature system to prevent the public from running unsigned code, one must either use a modchip, or a softmod. Originally, modchips were the only option; however, it was later demonstrated th... |
https://en.wikipedia.org/wiki/The%20Right%20to%20Read | The Right to Read is a short story by Richard Stallman, the founder of the Free Software Foundation, which was first published in 1997 in Communications of the ACM. It is a cautionary tale set in the year 2047, when DRM-like technologies are employed to restrict the readership of books; when the sharing of books and wr... |
https://en.wikipedia.org/wiki/Preemption%20%28computing%29 | In computing, preemption is the act of temporarily interrupting an executing task, with the intention of resuming it at a later time. This interrupt is done by an external scheduler with no assistance or cooperation from the task. This preemptive scheduler usually runs in the most privileged protection ring, meaning th... |
https://en.wikipedia.org/wiki/Honda%20E%20series | The E series was a collection of successive humanoid robots created by the Honda Motor Company between the years of 1986 and 1993. These robots were only experimental, but later evolved into the Honda P series, with Honda eventually amassing the knowledge and experience necessary to create Honda's advanced humanoid rob... |
https://en.wikipedia.org/wiki/Raunki%C3%A6r%20plant%20life-form | The Raunkiær system is a system for categorizing plants using life-form categories, devised by Danish botanist Christen C. Raunkiær and later extended by various authors.
History
It was first proposed in a talk to the Danish Botanical Society in 1904 as can be inferred from the printed discussion of that talk, but not... |
https://en.wikipedia.org/wiki/AUO%20Corporation | AUO Corporation (AUO; ) is a Taiwanese company that specialises in optoelectronic solutions. It was formed in September 2001 by the merger of Acer Display Technology, Inc. (the predecessor of AUO, established in 1996) and Unipac Optoelectronics Corporation. AUO offers display panel products and solutions, and in recent... |
https://en.wikipedia.org/wiki/Concurrent%20lines | In geometry, lines in a plane or higher-dimensional space are concurrent if they intersect at a single point. They are in contrast to parallel lines.
Examples
Triangles
In a triangle, four basic types of sets of concurrent lines are altitudes, angle bisectors, medians, and perpendicular bisectors:
A triangle's alt... |
https://en.wikipedia.org/wiki/Disk%20Utility | Disk Utility is a system utility for performing disk and disk volume-related tasks on the macOS operating system by Apple Inc.
Functions
The functions currently supported by Disk Utility include:
Creation, conversion, backup, compression, and encryption of logical volume images from a wide range of formats read by Di... |
https://en.wikipedia.org/wiki/DEC%20Multia | The Multia, later re-branded the Universal Desktop Box, was a line of desktop computers introduced by Digital Equipment Corporation on 7 November 1994. The line is notable in that units were offered with either an Alpha AXP or Intel Pentium processor as the CPU, and most hardware other than the backplane and CPU were ... |
https://en.wikipedia.org/wiki/Direct%20fluorescent%20antibody | A direct fluorescent antibody (DFA or dFA), also known as "direct immunofluorescence", is an antibody that has been tagged in a direct fluorescent antibody test. Its name derives from the fact that it directly tests the presence of an antigen with the tagged antibody, unlike western blotting, which uses an indirect met... |
https://en.wikipedia.org/wiki/Immunomagnetic%20separation | Immunomagnetic separation (IMS) is a laboratory tool that can efficiently isolate cells out of body fluid or cultured cells. It can also be used as a method of quantifying the pathogenicity of food, blood or feces. DNA analysis have supported the combined use of both this technique and Polymerase Chain Reaction (PCR). ... |
https://en.wikipedia.org/wiki/Rainbow%20Series | The Rainbow Series (sometimes known as the Rainbow Books) is a series of computer security standards and guidelines published by the United States government in the 1980s and 1990s. They were originally published by the U.S. Department of Defense Computer Security Center, and then by the National Computer Security Cent... |
https://en.wikipedia.org/wiki/Surface%20power%20density | In physics and engineering, surface power density is power per unit area.
Applications
The intensity of electromagnetic radiation can be expressed in W/m2. An example of such a quantity is the solar constant.
Wind turbines are often compared using a specific power measuring watts per square meter of turbine disk are... |
https://en.wikipedia.org/wiki/Power%20density | Power density is the amount of power (time rate of energy transfer) per unit volume.
In energy transformers including batteries, fuel cells, motors, power supply units etc., power density refers to a volume, where it is often called volume power density, expressed as W/m3.
In reciprocating internal combustion engines... |
https://en.wikipedia.org/wiki/Macro-engineering | In engineering, macro-engineering (alternatively known as mega engineering) is the implementation of large-scale design projects. It can be seen as a branch of civil engineering or structural engineering applied on a large landmass. In particular, macro-engineering is the process of marshaling and managing of resources... |
https://en.wikipedia.org/wiki/Super%20black | Super black is a surface treatment developed at the National Physical Laboratory (NPL) in the United Kingdom. It absorbs approximately 99.6% of visible light at normal incidence, while conventional black paint absorbs about 97.5%. At other angles of incidence, super black is even more effective: at an angle of 45°, it ... |
https://en.wikipedia.org/wiki/Net2Phone | net2phone is a Cloud Communications provider offering cloud based telephony services to businesses worldwide. The company is a subsidiary of IDT Corporation.
History
net2phone was founded in 1990 by telecom entrepreneur Howard Jonas, the chairman and chief executive officer of net2phone’s parent company, IDT Corporati... |
https://en.wikipedia.org/wiki/TRADIC | The TRADIC (for TRAnsistor DIgital Computer or TRansistorized Airborne DIgital Computer) was the first transistorized computer in the USA, completed in 1954.
The computer was built by Jean Howard Felker of Bell Labs for the United States Air Force while L.C. Brown ("Charlie Brown") was a lead engineer on the project, ... |
https://en.wikipedia.org/wiki/Finite%20strain%20theory | In continuum mechanics, the finite strain theory—also called large strain theory, or large deformation theory—deals with deformations in which strains and/or rotations are large enough to invalidate assumptions inherent in infinitesimal strain theory. In this case, the undeformed and deformed configurations of the con... |
https://en.wikipedia.org/wiki/Closed-loop%20authentication | Closed-loop authentication, as applied to computer network communication, refers to a mechanism whereby one party verifies the purported identity of another party by requiring them to supply a copy of a token transmitted to the canonical or trusted point of contact for that identity. It is also sometimes used to refer... |
https://en.wikipedia.org/wiki/Sampled%20data%20system | In systems science, a sampled-data system is a control system in which a continuous-time plant is controlled with a digital device. Under periodic sampling, the sampled-data system is time-varying but also periodic; thus, it may be modeled by a simplified discrete-time system obtained by discretizing the plant. Howeve... |
https://en.wikipedia.org/wiki/Lov%C3%A1sz%20local%20lemma | In probability theory, if a large number of events are all independent of one another and each has probability less than 1, then there is a positive (possibly small) probability that none of the events will occur. The Lovász local lemma allows one to relax the independence condition slightly: As long as the events are ... |
https://en.wikipedia.org/wiki/Lustre%20%28programming%20language%29 | Lustre is a formally defined, declarative, and synchronous dataflow programming language for programming reactive systems. It began as a research project in the early 1980s. A formal presentation of the language can be found in the 1991 Proceedings of the IEEE. In 1993 it progressed to practical, industrial use in a co... |
https://en.wikipedia.org/wiki/Averest | Averest is a synchronous programming language and set of tools to specify, verify, and implement reactive systems. It includes a compiler for synchronous programs, a symbolic model checker, and a tool for hardware/software synthesis.
It can be used to model and verify finite and infinite state systems, at varied abstr... |
https://en.wikipedia.org/wiki/Inspissation | Inspissation is the process of increasing the viscosity of a fluid, or even of causing it to solidify, typically by dehydration or otherwise reducing its content of solvents. The term also has been applied to coagulation by heating of some substances such as albumens, or cooling some such as solutions of gelatin or aga... |
https://en.wikipedia.org/wiki/Test%20harness | In software testing, a test harness is a collection of stubs and drivers configured to assist with the testing of an application or component. It acts as imitation infrastructure for test environments or containers where the full infrastructure is either not available or not desired.
Test harnesses allow for the autom... |
https://en.wikipedia.org/wiki/JSON-RPC | JSON-RPC is a remote procedure call protocol encoded in JSON. It is similar to the XML-RPC protocol, defining only a few data types and commands. JSON-RPC allows for notifications (data sent to the server that does not require a response) and for multiple calls to be sent to the server which may be answered asynchronou... |
https://en.wikipedia.org/wiki/Detailed%20balance | The principle of detailed balance can be used in kinetic systems which are decomposed into elementary processes (collisions, or steps, or elementary reactions). It states that at equilibrium, each elementary process is in equilibrium with its reverse process.
History
The principle of detailed balance was explicitly i... |
https://en.wikipedia.org/wiki/Generic%20filter | In the mathematical field of set theory, a generic filter is a kind of object used in the theory of forcing, a technique used for many purposes, but especially to establish the independence of certain propositions from certain formal theories, such as ZFC. For example, Paul Cohen used forcing to establish that ZFC, if ... |
https://en.wikipedia.org/wiki/Physical%20plant | Physical plant, mechanical plant or industrial plant (and where context is given, often just plant) refers to the necessary infrastructure used in operation and maintenance of a given facility. The operation of these facilities, or the department of an organization which does so, is called "plant operations" or facilit... |
https://en.wikipedia.org/wiki/Two-vector | A two-vector or bivector is a tensor of type and it is the dual of a two-form, meaning that it is a linear functional which maps two-forms to the real numbers (or more generally, to scalars).
The tensor product of a pair of vectors is a two-vector. Then, any two-form can be expressed as a linear combination of tenso... |
https://en.wikipedia.org/wiki/Numerical%20taxonomy | Numerical taxonomy is a classification system in biological systematics which deals with the grouping by numerical methods of taxonomic units based on their character states. It aims to create a taxonomy using numeric algorithms like cluster analysis rather than using subjective evaluation of their properties. The con... |
https://en.wikipedia.org/wiki/Property%20of%20Baire | A subset of a topological space has the property of Baire (Baire property, named after René-Louis Baire), or is called an almost open set, if it differs from an open set by a meager set; that is, if there is an open set such that is meager (where denotes the symmetric difference).
Definitions
A subset of a to... |
https://en.wikipedia.org/wiki/Memorex | Memorex Corp. began as a computer tape producer and expanded to become both a consumer media supplier and a major IBM plug compatible peripheral supplier. It was broken up and ceased to exist after 1996 other than as a consumer electronics brand specializing in disk recordable media for CD and DVD drives, flash memory... |
https://en.wikipedia.org/wiki/Sector%20mass%20spectrometer | A sector instrument is a general term for a class of mass spectrometer that uses a static electric (E) or magnetic (B) sector or some combination of the two (separately in space) as a mass analyzer. Popular combinations of these sectors have been the EB, BE (of so-called reverse geometry), three-sector BEB and four-sec... |
https://en.wikipedia.org/wiki/Skype%20Technologies | Skype Technologies S.A.R.L (also known as Skype Software S.A.R.L, Skype Communications S.A.R.L, Skype Inc., and Skype Limited) is a telecommunications company headquartered in Luxembourg City, Luxembourg, whose chief business is the manufacturing and marketing of the video chat and instant messaging computer software p... |
https://en.wikipedia.org/wiki/Koha%20%28software%29 | Koha is an open-source integrated library system (ILS), used world-wide by public, school and special libraries. The name comes from a Māori term for a gift or donation.
Features
Koha is a web-based ILS, with a SQL database (MariaDB or MySQL preferred) back end with cataloguing data stored in MARC and accessible via... |
https://en.wikipedia.org/wiki/Geometry%20processing | Geometry processing, or mesh processing, is an area of research that uses concepts from applied mathematics, computer science and engineering to design efficient algorithms for the acquisition, reconstruction, analysis, manipulation, simulation and transmission of complex 3D models. As the name implies, many of the co... |
https://en.wikipedia.org/wiki/Key%20Tronic | Key Tronic Corporation (branded Keytronic) is a technology company founded in 1969. Its core products initially included keyboards, mice and other input devices. KeyTronic currently specializes in PCBA and full product assembly. The company is among the ten largest contract manufacturers providing electronic manufactur... |
https://en.wikipedia.org/wiki/Z2%20%28computer%29 | The Z2 was an electromechanical (mechanical and relay-based) digital computer that was completed by Konrad Zuse in 1940. It was an improvement on the Z1 Zuse built in his parents' home, which used the same mechanical memory. In the Z2, he replaced the arithmetic and control logic with 600 electrical relay circuits, wei... |
https://en.wikipedia.org/wiki/Nuclear%20reaction%20analysis | Nuclear reaction analysis (NRA) is a nuclear method of nuclear spectroscopy in materials science to obtain concentration vs. depth distributions for certain target chemical elements in a solid thin film.
Mechanism of NRA
If irradiated with select projectile nuclei at kinetic energies Ekin, target solid thin-film chemi... |
https://en.wikipedia.org/wiki/Labyrinth%3A%20The%20Computer%20Game | Labyrinth: The Computer Game is a 1986 graphic adventure game developed by Lucasfilm Games and published by Activision. Based on the fantasy film Labyrinth, it tasks the player with navigating a maze while solving puzzles and evading dangers. The player's goal is to find and defeat the main antagonist, Jareth, within 1... |
https://en.wikipedia.org/wiki/Term%20algebra | In universal algebra and mathematical logic, a term algebra is a freely generated algebraic structure over a given signature. For example, in a signature consisting of a single binary operation, the term algebra over a set X of variables is exactly the free magma generated by X. Other synonyms for the notion include ab... |
https://en.wikipedia.org/wiki/Ap%C3%A9ry%27s%20constant | In mathematics, Apéry's constant is the sum of the reciprocals of the positive cubes. That is, it is defined as the number
where is the Riemann zeta function. It has an approximate value of
.
The constant is named after Roger Apéry. It arises naturally in a number of physical problems, including in the second-... |
https://en.wikipedia.org/wiki/Native%20capacity | In computing, Native capacity refers to the uncompressed storage capacity of any medium that is usually spoken of in compressed sizes. For example, tape cartridges are rated in compressed capacity, which usually assumes 2:1 compression ratio over the native capacity.
References
Computer storage media |
https://en.wikipedia.org/wiki/Linear%20amplifier | A linear amplifier is an electronic circuit whose output is proportional to its input, but capable of delivering more power into a load. The term usually refers to a type of radio-frequency (RF) power amplifier, some of which have output power measured in kilowatts, and are used in amateur radio. Other types of linear ... |
https://en.wikipedia.org/wiki/Circular%20symmetry | In geometry, circular symmetry is a type of continuous symmetry for a planar object that can be rotated by any arbitrary angle and map onto itself.
Rotational circular symmetry is isomorphic with the circle group in the complex plane, or the special orthogonal group SO(2), and unitary group U(1). Reflective circular ... |
https://en.wikipedia.org/wiki/Solenoid%20%28mathematics%29 | This page discusses a class of topological groups. For the wrapped loop of wire, see Solenoid.
In mathematics, a solenoid is a compact connected topological space (i.e. a continuum) that may be obtained as the inverse limit of an inverse system of topological groups and continuous homomorphisms
where each is a circl... |
https://en.wikipedia.org/wiki/STN%20display | A super-twisted nematic (STN) display is a type of monochrome passive-matrix liquid crystal display (LCD).
History
This type of LCD was first patented by C. M. Waters and E. P. Raynes in 1982 whilst work was also conducted at the Brown Boveri Research Center, Baden, Switzerland, in 1983. For years a better scheme fo... |
https://en.wikipedia.org/wiki/Reverse%20video | Reverse video (or invert video or inverse video or reverse screen) is a computer display technique whereby the background and text color values are inverted. On older computers, displays were usually designed to display text on a black background by default. For emphasis, the color scheme was swapped to bright backgrou... |
https://en.wikipedia.org/wiki/Crystallographic%20restriction%20theorem | The crystallographic restriction theorem in its basic form was based on the observation that the rotational symmetries of a crystal are usually limited to 2-fold, 3-fold, 4-fold, and 6-fold. However, quasicrystals can occur with other diffraction pattern symmetries, such as 5-fold; these were not discovered until 1982 ... |
https://en.wikipedia.org/wiki/Gecos%20field | The gecos field, or GECOS field is a field in each record in the /etc/passwd file on Unix and similar operating systems. On UNIX, it is the 5th of 7 fields in a record.
It is typically used to record general information about the account or its user(s) such as their real name and phone number.
Format
The typical form... |
https://en.wikipedia.org/wiki/Polymersome | In biotechnology, polymersomes are a class of artificial vesicles, tiny hollow spheres that enclose a solution. Polymersomes are made using amphiphilic synthetic block copolymers to form the vesicle membrane, and have radii ranging from 50 nm to 5 µm or more. Most reported polymersomes contain an aqueous solution in th... |
https://en.wikipedia.org/wiki/Blum%20integer | In mathematics, a natural number n is a Blum integer if is a semiprime for which p and q are distinct prime numbers congruent to 3 mod 4. That is, p and q must be of the form , for some integer t. Integers of this form are referred to as Blum primes. This means that the factors of a Blum integer are Gaussian primes wi... |
https://en.wikipedia.org/wiki/Mental%20poker | Mental poker is the common name for a set of cryptographic problems that concerns playing a fair game over distance without the need for a trusted third party. The term is also applied to the theories surrounding these problems and their possible solutions. The name comes from the card game poker which is one of the ga... |
https://en.wikipedia.org/wiki/Veritas%20Volume%20Manager | The Veritas Volume Manager (VVM or VxVM) is a proprietary logical volume manager from Veritas (which was part of Symantec until January 2016).
Details
It is available for Windows, AIX, Solaris, Linux, and HP-UX. A modified version is bundled with HP-UX as its built-in volume manager. It offers volume management and Mu... |
https://en.wikipedia.org/wiki/Proofs%20involving%20the%20addition%20of%20natural%20numbers | This article contains mathematical proofs for some properties of addition of the natural numbers: the additive identity, commutativity, and associativity. These proofs are used in the article Addition of natural numbers.
Definitions
This article will use the Peano axioms for the definition of natural numbers. With the... |
https://en.wikipedia.org/wiki/Check%20Point | Check Point is an American-Israeli multinational provider of software and combined hardware and software products for IT security, including network security, endpoint security, cloud security, mobile security, data security and security management.
, the company has approximately 6,000 employees worldwide. Headquarte... |
https://en.wikipedia.org/wiki/Calspan | Calspan Corporation is a science and technology company founded in 1943 as part of the Research Laboratory of the Curtiss-Wright Airplane Division at Buffalo, New York. Calspan consists of four primary operating units: Flight Research, Transportation Research, Aerospace Sciences Transonic Wind Tunnel, and Crash Investi... |
https://en.wikipedia.org/wiki/Rudder%20ratio | Rudder ratio refers to a value that is monitored by the computerized flight control systems in modern aircraft. The ratio relates the aircraft airspeed to the rudder deflection setting that is in effect at the time. As an aircraft accelerates, the deflection of the rudder needs to be reduced proportionately within the... |
https://en.wikipedia.org/wiki/Cooperative%20board%20game | Cooperative board games are board games in which players work together to achieve a common goal rather than competing against each other. Either the players win the game by reaching a pre-determined objective, or all players lose the game, often by not reaching the objective before a certain event ends the game.
Defin... |
https://en.wikipedia.org/wiki/Cycles%20and%20fixed%20points | In mathematics, the cycles of a permutation of a finite set S correspond bijectively to the orbits of the subgroup generated by acting on S. These orbits are subsets of S that can be written as , such that
for , and .
The corresponding cycle of is written as ( c1 c2 ... cn ); this expression is not unique since ... |
https://en.wikipedia.org/wiki/Electroceramics | Electroceramics are a class of ceramic materials used primarily for their electrical properties.
While ceramics have traditionally been admired and used for their mechanical, thermal and chemical stability, their unique electrical, optical and magnetic properties have become of increasing importance in many key techno... |
https://en.wikipedia.org/wiki/Solid%20solution | A solid solution, a term popularly used for metals, is a homogeneous mixture of two different kinds of atoms in solid state and having a single crystal structure. Many examples can be found in metallurgy, geology, and solid-state chemistry. The word "solution" is used to describe the intimate mixing of components at th... |
https://en.wikipedia.org/wiki/Stanis%C5%82aw%20Radziszowski | Stanisław P. Radziszowski (born June 7, 1953) is a Polish-American mathematician and computer scientist, best known for his work in Ramsey theory.
Radziszowski was born in Gdańsk, Poland, and received his PhD from the Institute of Informatics of the University of Warsaw in 1980. His thesis topic was "Logic and Comple... |
https://en.wikipedia.org/wiki/Plantronics%20Colorplus | The Plantronics Colorplus is a graphics card for IBM PC computers, first sold in 1982. It is a superset of the then-current CGA standard, using the same monitor standard (4-bit digital TTL RGBI monitor) and providing the same pixel resolutions. It was produced by Frederick Electronics (of Frederick, Maryland), a subsi... |
https://en.wikipedia.org/wiki/American%20Coalition%20for%20Clean%20Coal%20Electricity | The American Coalition for Clean Coal Electricity (ACCCE, formerly ABEC or Americans for Balanced Energy Choices) is a U.S. non-profit advocacy group representing major American coal producers, utility companies and railroads. The organization seeks to influence public opinion and legislation in favor of coal-generated... |
https://en.wikipedia.org/wiki/SPARCstation | The SPARCstation, SPARCserver and SPARCcenter product lines are a series of SPARC-based computer workstations and servers in desktop, desk side (pedestal) and rack-based form factor configurations, that were developed and sold by Sun Microsystems.
The first SPARCstation was the SPARCstation 1 (also known as the Sun 4/... |
https://en.wikipedia.org/wiki/Somos%27%20quadratic%20recurrence%20constant | In mathematics, Somos' quadratic recurrence constant, named after Michael Somos, is the number
This can be easily re-written into the far more quickly converging product representation
which can then be compactly represented in infinite product form by:
The constant σ arises when studying the asymptotic behaviour o... |
https://en.wikipedia.org/wiki/Digi%20International | Digi International is an American Industrial Internet of Things (IIoT) technology company with headquarters based in Hopkins, Minnesota. The company was founded in 1985 and went public as Digi International in 1989. The company initially offered intelligent ISA/PCI boards (the 'DigiBoard') with multiple asynchronous se... |
https://en.wikipedia.org/wiki/Strong%20cryptography | Strong cryptography or cryptographically strong are general terms used to designate the cryptographic algorithms that, when used correctly, provide a very high (usually unsurmountable) level of protection against any eavesdropper, including the government agencies. There is no precise definition of the boundary line b... |
https://en.wikipedia.org/wiki/Spatial%20capacity | 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.
Spatial capacity focuses not only on bit rates for data transfer but on bit ra... |
https://en.wikipedia.org/wiki/Bitrate%20peeling | Bitrate peeling is a technique used in Ogg Vorbis audio encoded streams, wherein a stream can be encoded at one bitrate but can be served at that or any lower bitrate.
The purpose is to provide access to the clip for people with slower Internet connections, and yet still allow people with faster connections to enjoy t... |
https://en.wikipedia.org/wiki/International%20Society%20for%20the%20Interdisciplinary%20Study%20of%20Symmetry | The International Symmetry Society ("International Society for the Interdisciplinary Study of Symmetry"; abbreviated name SIS) is an international non-governmental, non-profit organization registered in Hungary (Budapest, Vármegye u. 7. II. 3., H-1052).
Its main objectives are:
to bring together artists and scientist... |
https://en.wikipedia.org/wiki/Functional%20block%20diagram | A functional block diagram, in systems engineering and software engineering, is a block diagram that describes the functions and interrelationships of a system.
The functional block diagram can picture:
Functions of a system pictured by blocks
input and output elements of a block pictured with lines
the relatio... |
https://en.wikipedia.org/wiki/C%20Traps%20and%20Pitfalls | C Traps and Pitfalls is a slim computer programming book by former AT&T Corporation researcher and programmer Andrew Koenig, its first edition still in print in 2017, which outlines the many ways in which beginners and even sometimes quite experienced C programmers can write poor, malfunctioning and dangerous source co... |
https://en.wikipedia.org/wiki/J%C3%BAlio%20C%C3%A9sar%20de%20Mello%20e%20Souza | Júlio César de Mello e Souza (Rio de Janeiro, May 6, 1895 – Recife, June 18, 1974), was a Brazilian writer and mathematics teacher. He was well known in Brazil and abroad for his books on recreational mathematics, most of them published under the pen names of Malba Tahan and Breno de Alencar Bianco.
He wrote 69 novels... |
https://en.wikipedia.org/wiki/1458%20%28number%29 | 1458 is the integer after 1457 and before 1459.
The maximum determinant of an 11 by 11 matrix of zeroes and ones is 1458.
1458 is one of three numbers which, when its base 10 digits are added together, produces a sum which, when multiplied by its reversed self, yields the original number:
1 + 4 + 5 + 8 = 18
18 × 8... |
https://en.wikipedia.org/wiki/Free%20and%20open-source%20graphics%20device%20driver | A free and open-source graphics device driver is a software stack which controls computer-graphics hardware and supports graphics-rendering application programming interfaces (APIs) and is released under a free and open-source software license. Graphics device drivers are written for specific hardware to work within a ... |
https://en.wikipedia.org/wiki/Springbok%20Radio | Springbok Radio (spelled Springbokradio in Afrikaans, ) was a South African nationwide radio station that operated from 1950 to 1986.
History
SABC's decision in December 1945 to develop a commercial service was constrained by post-war financial issues. After almost five years of investigation and after consulting Lord... |
https://en.wikipedia.org/wiki/Brocade%20Communications%20Systems | Brocade was an American technology company specializing in storage networking products, now a subsidiary of Broadcom Inc. The company is known for its Fibre Channel storage networking products and technology. Prior to the acquisition, the company expanded into adjacent markets including a wide range of IP/Ethernet hard... |
https://en.wikipedia.org/wiki/Outside%20broadcasting | Outside broadcasting (OB) is the electronic field production (EFP) of television or radio programmes (typically to cover television news and sports television events) from a mobile remote broadcast television studio. Professional video camera and microphone signals come into the production truck for processing, record... |
https://en.wikipedia.org/wiki/Photoheterotroph | Photoheterotrophs (Gk: photo = light, hetero = (an)other, troph = nourishment) are heterotrophic phototrophs—that is, they are organisms that use light for energy, but cannot use carbon dioxide as their sole carbon source. Consequently, they use organic compounds from the environment to satisfy their carbon requirement... |
https://en.wikipedia.org/wiki/Recursive%20data%20type | In computer programming languages, a recursive data type (also known as a recursively-defined, inductively-defined or inductive data type) is a data type for values that may contain other values of the same type. Data of recursive types are usually viewed as directed graphs.
An important application of recursion in co... |
https://en.wikipedia.org/wiki/Langmuir%E2%80%93Blodgett%20film | A Langmuir–Blodgett (LB) film is a nanostructured system formed when Langmuir films—or Langmuir monolayers (LM)—are transferred from the liquid-gas interface to solid supports during the vertical passage of the support through the monolayers. LB films can contain one or more monolayers of an organic material, deposited... |
https://en.wikipedia.org/wiki/Network%20redirector | In DOS and Windows, a network redirector, or redirector, is an operating system driver that sends data to and receives data from a remote device. A network redirector provides mechanisms to locate, open, read, write, and delete files and submit print jobs.
It provides application services such as named pipes and MailS... |
https://en.wikipedia.org/wiki/Looking%20Glass%20server | Looking Glass servers (LG servers) are servers on the Internet running one of a variety of publicly available Looking Glass software implementations. They are commonly deployed by autonomous systems (AS) to offer access to their routing infrastructure in order to facilitate debugging network issues. A Looking Glass ser... |
https://en.wikipedia.org/wiki/Quadrupole%20ion%20trap | In experimental physics, a quadrupole ion trap or paul trap is a type of ion trap that uses dynamic electric fields to trap charged particles. They are also called radio frequency (RF) traps or Paul traps in honor of Wolfgang Paul, who invented the device and shared the Nobel Prize in Physics in 1989 for this work. It ... |
https://en.wikipedia.org/wiki/Genetic%20redundancy | Genetic redundancy is a term typically used to describe situations where a given biochemical function is redundantly encoded by two or more genes. In these cases, mutations (or defects) in one of these genes will have a smaller effect on the fitness of the organism than expected from the genes’ function. Characteristic... |
https://en.wikipedia.org/wiki/Stirling%20numbers%20of%20the%20second%20kind | In mathematics, particularly in combinatorics, a Stirling number of the second kind (or Stirling partition number) is the number of ways to partition a set of n objects into k non-empty subsets and is denoted by or . Stirling numbers of the second kind occur in the field of mathematics called combinatorics and the st... |
https://en.wikipedia.org/wiki/Stirling%20numbers%20of%20the%20first%20kind | In mathematics, especially in combinatorics, Stirling numbers of the first kind arise in the study of permutations. In particular, the Stirling numbers of the first kind count permutations according to their number of cycles (counting fixed points as cycles of length one).
The Stirling numbers of the first and second... |
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