|
Redundancy (other)
Redundancy or redundant may refer to: Language * Redundancy (linguistics), information that is expressed more than once Engineering and computer science * Data redundancy, database systems which have a field that is repeated in two or more tables * Logic redundancy, a digital gate network containing circuitry that does not affect the static logic function * Redundancy (engineering), the duplication of critical components or functions of a system with the intention of increasing reliability * Redundancy (information theory), the number of bits used to transmit a message minus the number of bits of actual information in the message * Redundancy in total quality management, quality which exceeds the required quality level, creating unnecessarily high costs * The same task executed by several different methods in a user interface Biology * Codon redundancy, the redundancy of the genetic code exhibited as the multiplicity of three-codon combinations * Cytokine redundancy, a term in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Redundancy (linguistics)
In linguistics, redundancy refers to information that is expressed more than once. Examples of redundancies include multiple agreement features in morphology, multiple features distinguishing phonemes in phonology, or the use of multiple words to express a single idea in rhetoric. Grammar Redundancy may occur at any level of grammar. Because of agreement – a requirement in many languages that the form of different words in a phrase or clause correspond with one another – the same semantic information may be expressed several times. In the Spanish phrase ''los árboles verdes'' ("the green trees"), for example, the article ''los'', the noun ''árboles'', and the adjective ''verdes'' are all inflected to show that the phrase is plural. An English example would be: ''that man is a soldier'' versus ''those men are soldiers.'' In phonology, a minimal pair is a pair of words or phrases that differs by only one phoneme, the smallest distinctive unit of the sound system. Even so, p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Data Redundancy
In computer main memory, auxiliary storage and computer buses, data redundancy is the existence of data that is additional to the actual data and permits correction of errors in stored or transmitted data. The additional data can simply be a complete copy of the actual data (a type of repetition code), or only select pieces of data that allow detection of errors and reconstruction of lost or damaged data up to a certain level. For example, by including additional data checksums, ECC memory is capable of detecting and correcting single-bit errors within each memory word, while RAID 1 combines two hard disk drives (HDDs) into a logical storage unit that allows stored data to survive a complete failure of one drive. Data redundancy can also be used as a measure against silent data corruption; for example, file systems such as Btrfs and ZFS use data and metadata checksumming in combination with copies of stored data to detect silent data corruption and repair its effects. In d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Logic Redundancy
Logic redundancy occurs in a digital gate network containing circuitry that does not affect the static logic function. There are several reasons why logic redundancy may exist. One reason is that it may have been added deliberately to suppress transient glitches (thus causing a race condition) in the output signals by having two or more product terms overlap with a third one. Consider the following equation: : Y = A B + \overline C + B C. The third product term BC is a redundant consensus term. If A switches from 1 to 0 while B = 1 and C = 1, Y remains 1. During the transition of signal A in logic gates, both the first and second term may be 0 momentarily. The third term prevents a glitch since its value of 1 in this case is not affected by the transition of signal A. Another reason for logic redundancy is poor design practices which unintentionally result in logically redundant terms. This causes an unnecessary increase in network complexity, and possibly hampering the abili ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Redundancy (engineering)
In engineering, redundancy is the intentional duplication of critical components or functions of a system with the goal of increasing reliability of the system, usually in the form of a backup or fail-safe, or to improve actual system performance, such as in the case of GNSS receivers, or multi-threaded computer processing. In many safety-critical systems, such as fly-by-wire and hydraulic systems in aircraft, some parts of the control system may be triplicated, which is formally termed triple modular redundancy (TMR). An error in one component may then be out-voted by the other two. In a triply redundant system, the system has three sub components, all three of which must fail before the system fails. Since each one rarely fails, and the sub components are expected to fail independently, the probability of all three failing is calculated to be extraordinarily small; it is often outweighed by other risk factors, such as human error. Redundancy may also be known by the terms "m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Redundancy (information Theory)
In information theory, redundancy measures the fractional difference between the entropy of an ensemble , and its maximum possible value \log(, \mathcal_X, ). Informally, it is the amount of wasted "space" used to transmit certain data. Data compression is a way to reduce or eliminate unwanted redundancy, while forward error correction is a way of adding desired redundancy for purposes of error detection and correction when communicating over a noisy channel of limited capacity. Quantitative definition In describing the redundancy of raw data, the rate of a source of information is the average entropy per symbol. For memoryless sources, this is merely the entropy of each symbol, while, in the most general case of a stochastic process, it is :r = \lim_ \frac H(M_1, M_2, \dots M_n), in the limit, as ''n'' goes to infinity, of the joint entropy of the first ''n'' symbols divided by ''n''. It is common in information theory to speak of the "rate" or "entropy" of a language. Th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
User Interface
In the industrial design field of human–computer interaction, a user interface (UI) is the space where interactions between humans and machines occur. The goal of this interaction is to allow effective operation and control of the machine from the human end, while the machine simultaneously feeds back information that aids the operators' decision-making process. Examples of this broad concept of user interfaces include the interactive aspects of computer operating systems, hand tools, heavy machinery operator controls and process controls. The design considerations applicable when creating user interfaces are related to, or involve such disciplines as, ergonomics and psychology. Generally, the goal of user interface design is to produce a user interface that makes it easy, efficient, and enjoyable (user-friendly) to operate a machine in the way which produces the desired result (i.e. maximum usability). This generally means that the operator needs to provide minimal input ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Codon Redundancy
Degeneracy or redundancy of codons is the redundancy of the genetic code, exhibited as the multiplicity of three-base pair codon combinations that specify an amino acid. The degeneracy of the genetic code is what accounts for the existence of synonymous mutations. Background Degeneracy of the genetic code was identified by Lagerkvist. For instance, codons GAA and GAG both specify glutamic acid and exhibit redundancy; but, neither specifies any other amino acid and thus are not ambiguous or demonstrate no ambiguity. The codons encoding one amino acid may differ in any of their three positions; however, more often than not, this difference is in the second or third position. For instance, the amino acid glutamic acid is specified by GAA and GAG codons (difference in the third position); the amino acid leucine is specified by UUA, UUG, CUU, CUC, CUA, CUG codons (difference in the first or third position); and the amino acid serine is specified by UCA, UCG, UCC, UCU, AGU, AGC (differen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cytokine Redundancy
Cytokine redundancy is a term in immunology referring to the phenomenon in which, and the ability of, multiple cytokines to exert similar actions. This phenomenon is largely due to multiple cytokines utilizing common Receptor (biochemistry), receptor subunits and common intracellular cell signalling signaling molecule, molecules/Cell signaling#Signaling pathways, pathways. For instance, a pair of redundant cytokines are interleukin 4 and interleukin 13. Cytokine redundancy is associated with the term ''cytokine pleiotropy'', which refers to the ability of cytokines to exert multiple actions. References {{Reflist Immunology ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gene Redundancy
Gene redundancy is the existence of multiple genes in the genome of an organism that perform the same function. Gene redundancy can result from gene duplication. Such duplication events are responsible for many sets of paralogous genes. When an individual gene in such a set is disrupted by mutation or targeted knockout, there can be little effect on phenotype as a result of gene redundancy, whereas the effect is large for the knockout of a gene with only one copy. Gene knockout is a method utilized in some studies aiming to characterize the maintenance and fitness effects functional overlap. Classical models of maintenance propose that duplicated genes may be conserved to various extents in genomes due to their ability to compensate for deleterious loss of function mutations.Nowak MA, Boerlijst MC, Cooke J, Smith JM. 1997. nowak_smith_1997_evolution_of_genetic_redundancy_Nature97. 275:1–5. sftp://cerca@192.168.2.5/home/cerca/Desktop/data/laptop_files/info/biologia/filogeny_evoluti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Redundant (song)
"Redundant" is a song by American rock band Green Day. It was released as the third single from their fifth album, ''Nimrod'' (1997), and serves as the fourth track from that album. Released in April 1998, the song failed to match the chart positions of its predecessors but did reach number two in Australia when it was reissued as a double A-side with "Good Riddance (Time of Your Life)", becoming the band's highest-charting single there. It is one of few Green Day songs in which vocalist/guitarist Billie Joe Armstrong uses an effects pedal. Meaning Before the ''Nimrod'' sessions, Billie Joe Armstrong's marriage had been deteriorating, with the singer arguing with his wife Adrienne Armstrong constantly. Influenced by this conflict, Armstrong reflected on the relationship from two standpoints; the first being his passion for his wife, the second being the repetitious pattern that the relationship had fallen into. The phrase "I love you" had lost its effectiveness and seemed to be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Redundant (play)
''Redundant'' by Leo Butler premiered at the Royal Court Theatre in 2001 starring Lyndsey Marshal and directed by Dominic Cooke. Set in seventeen-year-old Lucy's Sheffield council flat, the play follows a year in the promiscuous teenager's life as she makes one disastrous choice after another. It is a dark, often humorous, examination of social poverty. In the introduction in his collected volume of plays, Butler writes of his central character, "Though she is a victim of poverty - in particular, poverty of imagination and of opportunity - Lucy is never a victim in her own home. She never gives up, and both her dreams, however delusional, and her tough, oppositional spirit remain unspoiled even by the end of the play." It contained the first ever reference in theatre to Osama bin Laden where a character said that the whole country needed to be bombed by him to teach us all what suffering was. The play premiered at Royal Court on 12 September 2001 (the day after the attacks on ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
.jpg "Click for more on -> Redundancy (engineering)")
