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Encyclopedia results for Sexual selection

Sexual selection





Encyclopedia results for Sexual selection

  1. Sexual selection

    decora by John Gerrard Keulemans d.1912 Sexual selection , a concept introduced by Charles Darwin ... . The sexual form of selection cquote ... depends, not on a struggle for existence, but on a struggle ... 4, page 88. And this leads me to say a few words on what I call Sexual Selection. This depends ..., colour, or ornament, such differences have been mainly caused by sexual selection. ref Darwin, Charles .... Does not have to be multiple. His sexual selection examples include ornate peacock feathers, Bird ... greatly expands his initial three page treatment of Sexual Selection in the 1871 book The Descent of Man and Selection in Relation to Sex . This 900 page, two volume work includes 70 pages on sexual selection in human evolution, and 500 pages on sexual selection in other animals. ref name Miller ... selection results from the struggle to survive, sexual selection emerges from the struggle to reproduce ... to Sex John Murray, London ref Concept The sexual selection concept arises from the observation that many ... or defeating same sex rivals intrasexual selection, within a given sex . Thus, sexual selection takes ... contributors , Nemi szelekci Sexual Selection , Wikip dia, 2011. m jus 17. May 17, 2011. 15 12 UTC ... ref Sexual selection sometimes creates monstrously absurd features that, in harder times, could help .... Evolution 28 2 191 220. doi 10.2307 2407322 ref However, sexual selection can also do the opposite ... species emerge. ref Eberhard, W. G. 1985 . Sexual Selection and Animal Genitalia. Harvard University ... is sexual selection. It is known that males will often Giraffe Necking neck with other males in order ... that need to be satisfied for the exaggerated neck to be classified as a result of sexual selection ... Winning by a neck Sexual selection in the evolution of giraffe journal American Naturalist year 1996 ... in foraging selection. ref cite journal last Senter first P. title Necks for sex sexual selection ... of study. Although studies have been published that support foraging selection or sexual selection ...   more details



  1. Sexual selection in human evolution

    beard was the product of sexual selection in prehistoric times See also Physical attractiveness Charles Darwin described sexual selection as depending on the advantage which certain individuals ... sexual selection could explain otherwise puzzling features of the human species, including some ... evolution through a sexual selection hypothesis because he felt it upheld the unity of humankind by explaining ... not separate species. ref Sexual selection and the descent of man the Darwinian pivot By Bernard Grant ... contrast in the intensity and direction of sexual selection between Europe and Africa. The general ... selection and sexual selection. ref Linda Stone, Paul F. Lurquin, Luigi Luca Cavalli Sforza,. Genes ... to sexual selection however, Hair Human .22hairlessness.22 several other explanations have ... Cite pmid 20445093 ref Sexual selection is impossible to prove, as features may result from an equilibrium among competing selective pressures, some involving sexual selection, others natural ... dimorphism are generally seen as a marker of sexual selection, studies have shown the earliest ... faces, and suggested that this trait may have been caused by sexual selection, possibly because women ... Li 2007 . Biometric Evidence that Sexual Selection Has Shaped the Hominin Face PLoS ONE, 2 8 ... of sexual selection. He reasoned that since the bodies of females are more nearly hairless, the loss of fur was due to sexual selection of females at a remote prehistoric time when males had overwhelming ... the sexes. He also hypothesized that contrasts in sexual selection acting along with natural selection ... sexual selection for this characteristic. In the Descent of Man , Darwin viewed many physical ... habits of life, and which it is extremely probable would have been modified through sexual selection Darwin, 1936 1888 , p. 908 . ref that he concluded some input from sexual selection was required ... indicating that ideals of beauty did not, in fact, vary in this way around the world. Sexual selection ...   more details



  1. Major histocompatibility complex and sexual selection

    . As a result of female choice, sexual selection is imposed on males. This is evidenced by genetic ... diversity in the MHC would not be due to sexual selection. An example of this would be the existence ... MHC and Sexual Selection The Relationship Between Olfaction and MHC MHC based sexual selection is known .... These results support the Heterozygous Advantage hypothesis of sexual selection for MHC dissimilar ... Reflist See also Major histocompatibility complex Major Histocompatibility Complex Sexual selection Sexual Selection Body odor and subconscious human sexual attraction Body Odor and Subconscious Human Sexual Attraction Category Histochemistry Category Sexual selection ..., for which there are two nonmutually exclusive hypotheses selection for the maintenance of a highly ... advantage , or a selection that undergoes a frequency dependent cycle Red Queen Hypothesis . If individuals ..., selection on parasites to avoid recognition by this common allele increases. An advantageous characteristic that allows a parasite to escape recognition will spread and cause selection against ... selection such a cycle will eventually lead to a coevolutionary arms race which may support the maintenance ... may maintain genetic diversity in some species. Depending on how parasites alter selection on MHC ... or the Red Queen Hypothesis, then selection will also favor mating practices that are MHC dependent ... olfactory cues especially those used to evoke behavioral and sexual responses from other individuals ... fewer MHC alleles in common with the wearer than would be expected by chance. If the selection ... mate choice. Birds are one of the more commonly studied groups of animals to exhibit this sexual ... charr Salvelinus alpinus. In this case, however, it seems that sperm selection is more ... . ref Abortional selection may also be a form of cryptic female choice. Many studies on humans and rodents ... MHC genes. ref name Penn MHC and Sexual Conflict If males attempt to thwart female mate choice by mating ...   more details



  1. Selection

    selection . Natural selection is further subclassified into ecological selection ecological and sexual ... often is the result of disassortative sexual selection , and balancing selection may result from frequency dependent selection and overdominance . See also Natural selection Sexual selection Artificial ... traits or allele s of genes segregating within a population may be subject to selection . Under selection ... than others do. When these traits have a genetic basis, selection can increase the prevalence of those traits, because offspring will genetics inherit those traits from their parents. When selection ... then be said to have evolved . Scientists who do experimental genetics employ artificial selection experiments that permit the survival of organisms with user defined phenotypes. Artificial selection ... or not selection takes place depends on the conditions in which the individuals of a species find ... selection. Factors fostering selection include limits on resources nourishment, habitat space, mates ... as selective pressures . Natural selection is the most familiar type of selection by name. The breeding of dogs, cows and horses, however, represents artificial selection . Subcategories of natural selection are also sometimes distinguished. These include sexual selection , ecological selection , stabilizing selection , disruptive selection and directional selection more on these below . Selection ... neutral , selection does not occur. Meanwhile, selection does not guarantee that advantageous ... may become less common or disappear. In the face of selection even a so called deleterious allele may become universal to the members of a species. This is a risk primarily in the case of weak selection ... s. Though deleterious alleles may sometimes become established, selection may act negatively as well as positively. Negative selection decreases the prevalence of traits that diminish individuals capacity to succeed reproductively i.e. their fitness biology fitness , while positive selection ...   more details



  1. By-Sexual

    Infobox musical artist See Wikipedia WikiProject Musicians name By Sexual image BY SEXUAL CS.jpg caption By Sexual in 1990 br Clockwise from top Ryo, Den, Sho, Nao background group or band alias By Sex, Alzheimer origin Osaka , Japan genre Punk rock , pop punk years active 1988 1995, 2011 By Sexual br ... Den br Sakura musician Sakura past members Sho br Nao By Sexual stylized as BY SEXUAL was a Japanese ... By Sexual Album Review Retrieved August 27, 2007. ref In August 1996, the remaining members restarted ... 1998, Nao left and the group disbanded. On September 3, 2011, By Sexual reunited for a show ... http tower.jp article news 77854 BY SEXUAL 1 Retrieved May 13, 2011. ref ref name Oricon pics http www.oricon.co.jp news music 2002768 full ?cat id tw BY SEXUAL s Nao Starts ... BY SEXUAL Retrieved June 16, 2011. ref Around the same time, Ryo and Den teamed up with their former Zigzo bandmate Sakura musician Sakura to formally restart By Sex. History By Sexual ... By Sexual Fool s Mate 103 May 1990 ref In 1991 their song Bakumatsu Jyunjou Den was used as the theme ... via Nao s Twitter and Den s blog that By Sexual would reunite for one night. ref name ... BY SEXUAL One time Revival After 16 Years Retrieved May 13, 2011. ref ref name Oricon pics The concert ... Food, Nakata Band The Heavenly Curve, Badub By Sexual Sho Yamanoi vocals 1988 1995, 2011 Ryoji Ryo ... 1995, 2011 Discography As By Sex Ago August 17, 2011 As By Sexual Albums Culture Shock April 21 ... prof artist 3241 ranking cd album BY SEXUAL Retrieved April 18, 2011 ref ... By Sexual Best December 18, 2002, compilation album Singles So Bad Boy February 21, 1990 , Oricon ... cd single BY SEXUAL Retrieved April 18, 2011 ref Be Free March 21, 1990 , 14 ref name ... Oricon Singles Demo Bad Boy Blues 1988 Videos Film By Sexual 1 Film By Sexual 2 Film By Sexual 3 Film By Sexual 4 Film By Sexual 5 Film By Sexual 6 Books Penalty Area In and Out of By Sexual Kaizoku ...   more details



  1. Ecological selection

    Multiple issues unreferenced December 2009 original research September 2007 Ecological selection or environmental selection or survival selection or individual selection or asexual selection refers to natural selection minus sexual selection , i.e. strictly ecological processes that operate on a species ... February 2007 The variant names describe varying circumstances where sexual selection is wholly ... is hermaphroditic or asexually reproducing, an ecological selection is taking place. In sexual reproduction ... suppression of sexual selection factors prevents the normal sexual competition rituals and selection from taking place, but which also prevent artificial selection from operating, e.g. arranged marriages ... force. Ecological selection vs sexual selection In cases where ecological and sexual selection factors ... no longer run or evade predators thus ecological selection seems to have ultimately trumped sexual. It is also important to distinguish ecological selection in cases of extreme ecological abundance, e.g. the human built environment , cities or zoos, where sexual selection must generally predominate ..., however it becomes a sexual selection factor. Similar phenomena can be said to exist in humans ... selection from sexual is useful especially in such extreme cases Above examples demonstrate exceptions ... of its sexual fitness under normal sexual selection processes for that species. For example, if only ... to lack of males, sexual selection has been suppressed by an ecological selection the disaster . Such situations ... ecological selection factor, although it is neither natural selection natural nor sexual. Some ... selection can be said to be taking place in any circumstance where inheritance of specific traits is determined by ecology alone without direct sexual competition, when e.g. sexual competition ..., and where the sexual desires of the mated pair are often subordinated to these factors, are artificial ... be important to distinguish them as sub processes within natural selection. For instance, Ceratogaulus ...   more details



  1. Sexual evolution

    Sexual evolution may refer to Evolution of sex Sexual selection disambig Long comment to avoid being listed on short pages sh Seksualna evolucija ...   more details



  1. Emotional selection

    no footnotes date November 2011 Primarysources article date November 2011 Emotional Selection is a psychological theory of dream dreaming introduced in 2008 by Richard Coutts and refined in 2010. Emotional selection describes a process that executes a set of Dream dreams during non REM sleep with content that is tentatively accommodation psychology accommodated by Schema psychology mental schemas . Because Schema psychology schemas coexist as a wikt network network , accommodation psychology accommodations can introduce accidental, maladaptive conflicts and therefore are ideally tested prior to full integration. Consequently, during subsequent REM sleep a second set of Dream dreams is executed in the form of scenario testing test scenarios . If Schema psychology schema accommodation psychology ... tests, they would be selection selected for retention. Those accommodation psychology accommodations ... life. cite quote The Schema psychology schemas targeted by emotional selection are those essential for meeting Maslow s hierarchy of needs human needs . Consequently, emotional selection theory agrees ... Ferdinand Fellmann proposed in 2009 emotional selection as a third form of evolutionary selection besides natural and sexual selection. Loving, monogamous pair bonding seems to be the favoured field where sexual selection is being transformed in emotional selection specific for human courtship and mating. The concept of emotional selection fits the recent trend of evolutionary psychology which suggests that individual differences are more than the raw material upon which natural selection ... selection Julian Huxley in the more intense forms of pair bonding in primate sociality. Pair ... 574 title Dreams As Modifiers and Tests of Mental Schemas An Emotional Selection Hypothesis1 ... Reports Using Maslow s Need Categories An Extension to the Emotional Selection Hypothesis1, 2 ... Press. refend External links http www.youtube.com watch?v rkyX3yh60js Category Selection Category ...   more details



  1. Sexual bimaturism

    refimprove date September 2011 Sexual Bimaturism is an evolution ary idea that affects both sexes and how they develop. In humans, Sexual Bimaturism is evident in how males hit puberty about two years later then girls. This is because in nature polygyny , a marriage system that humans probably practiced in which many females were under one alpha male , has selected for late maturing males. If a young male were to hit puberty early and compete for females he most likely would have been killed by the bigger, stronger male who hit puberty later and waited before entering the sexual game. Types of marriages and how they were to develop Polygyny Many females under one male The typical Bimaturism that tends to develop from this is a slow development on the male part and fast, or normal, development for the female. Example, Humans Polyandry Many males under one females The typical results is usually a slow maturing female while a fast or normally maturing male. Example, Hyena s This is not to be confused with Sexual dimorphism Sexual Dimorphism in which Sexual selection Sexual Selection directly effects natural selection and selects for males with desirable traits for females, who almost always selects the mate. References Pratt, Nancy C., and John A. Phillips. Functional versus physiological puberty An analysis of sexual bimaturism in the green iguana.. Animal Behaviour 47.5 1994 1101. Academic Search Premier. EBSCO. Web. 15 Sept. 2011. Category Human sexuality ...   more details



  1. Natural selection

    success are also important, an issue that Charles Darwin developed in his ideas on sexual selection , for example. Natural selection acts on the phenotype , or the observable characteristics of an organism ... sexual selection and Competition Biology and ecology competition with members of the same or other ... via sexual selection, and success in this competition determines who will parent the next generation ... compatibility selection . Sexual selection Main Sexual selection It is useful to distinguish between ecological selection and sexual selection . Ecological selection covers any mechanism of selection ... competition , and Infanticide zoology infanticide , while sexual selection refers specifically to competition for mates. ref cite book author Andersson, M year 1995 title Sexual Selection publisher Princeton University Press location Princeton, New Jersey isbn 0 691 00057 3 ref Sexual selection can ... stags. More generally, intrasexual selection is often associated with sexual dimorphism , including ... thumb The exuberant tail of the peacock is thought to be the result of sexual selection by females ...Use American English date July 2011 Other uses Natural Selection disambiguation Evolutionary biology Natural selection is the gradual, non random , process by which trait biology biological traits become ... emergence of new species . In other words, natural selection is an important process though ... selection , in which humans favour specific traits, in natural selection the environment acts as a sieve through which only certain variations can pass. Natural selection is one of the cornerstones ... of Species , ref name origin Darwin C 1859 On the Origin of Species by Means of Natural Selection ... 2 On the origin of species by means of natural selection, or the preservation of favoured races in the struggle for life . ref in which natural selection was described as analogous to artificial selection ... are systematically favored for reproduction. The concept of natural selection was originally developed ...   more details



  1. Positive selection

    Positive selection may refer to Positive selection as an Thymocyte Events during maturation event during thymocyte maturation Directional selection , a particular mode or mechanism of natural selection. disambig immunology T cells that express TCR can bind weakly to self antigenson MHC are selected in positive selection ...   more details



  1. Unnatural Selection

    Unnatural Selection may refer to tocright Literature Saurians Unnatural Selection comics Saurians Unnatural Selection comics , a 2002 American comic book published by CrossGen Unnatural Selection Buffy novel Unnatural Selection Buffy novel , a 1999 original novel based on the television series Buffy the Vampire Slayer Unnatural Selection 2006 , Gideon Oliver novel by Aaron Elkins Unnatural Selection comics , a collection of comic strips from the Far Side, drawn by Gary Larson. Television Unnatural Selection The Outer Limits Unnatural Selection The Outer Limits , a 1996 episode of The Outer Limits television show Unnatural Selection Stargate SG 1 Unnatural Selection Stargate SG 1 , a 2002 episode of the science fiction television series Stargate SG 1 Unnatural Selection Star Trek The Next Generation Unnatural Selection Star Trek The Next Generation , a 1989 episode in the second season of Star Trek The Next Generation Other Unnatural Selection album Unnatural Selection album , a 1999 album by Flotsam And Jetsam Unnatural Selection video game , a 1993 video game by Maxis Unnatural Selection , a song on Muse s 2009 album The Resistance album The Resistance Unnatural Selection , an entry in the direct to video series P.R.O.B.E. , a spin off of the BBC science fiction series Doctor Who featuring companion character Liz Shaw . See also Artificial selection Natural selection disambiguation ...   more details



  1. Selection (disambiguation)

    Wiktionary selection Selection is the consistent differential survival and reproduction among genotypes. Selection may also refer to In computer science Selection user interface Selection genetic algorithm Selection relational algebra Selection based search , a search engine system in which the user invokes a search query using only the mouse Selection algorithm , an algorithm that finds the k th smallest number in a list Other uses Selected album Selected album , the compilation album by Recoil Selection Australian history , an area of crown land acquired under legislation Selection album Selection album , by 54 40 Selective school Selection in schools , the admission of students on the basis of selective critera Selection effect , a distortion of data arising from the way that the data are collected Selektion , selection of prisoners for execution at a Nazi concentration camp disambig de Selektion es Selecci n fr S lection gl Selecci n ja no Seleksjon sk Selekcia ...   more details



  1. Negative selection

    Negative selection may refer to In biology Negative selection natural selection , in natural selection it refers to the selective removal of rare alleles that are deleterious Negative selection artificial selection , in artificial selection it refers to where negative, rather than positive, traits of a species are selected for In politics Negative selection politics , is a process that occurs in rigid hierarchies, most notably dictatorships In immunology Negative selection immunology T cells that recognize self MHC molecules and peptides with high affinity are deleted from the repertoire of cells. Central tolerance is produced. Avoids auto immunity. Occurs after positive selection. disambig it Selezione negativa ...   more details



  1. Best Selection

    Best Selection may refer to Best Selection Japan album Best Selection Japan album , 1994 Best Selection Jimsaku album Best Selection Jimsaku album Best Selection 2010 , a greatest hits album by Korean boy band TVXQ disambiguation Short pages monitor This long comment was added to the page to prevent it from being listed on Special Shortpages. It and the accompanying monitoring template were generated via Template Long comment. Please do not remove the monitor template without removing the comment as well. ...   more details



  1. Negative selection (natural selection)

    Other uses Negative selection disambiguation In natural selection , negative selection ref Loewe, L. 2008 . http www.nature.com scitable topicpage Negative Selection 1136 Negative selection . Nature Education 1 1 . ref or purifying selection is the selective removal of alleles that are Mutation Harmful mutations deleterious . This can result in stabilizing selection through the purging of deleterious variations that arise. Purging of deleterious alleles can be achieved on the population genetics level, with as little as a single point mutation being the unit of selection. In such a case, carriers of the harmful point mutation have fewer offspring each generation, reducing the frequency of the mutation in the gene pool. In the case of strong negative selection on a locus, the purging of deleterious variants will result in the occasional removal of genetic linkage linked variation, producing a decrease in the level of variation surrounding the locus under selection. The accidental purging of non deleterious alleles due to such spatial proximity to deleterious alleles is called background selection . ref Brian Charlesworth Charlesworth, B. , Morgan, M. T. and Deborah Charlesworth Charlesworth, D. 1993. The effect of deleterious mutations on neutral molecular variation. Genetics 134 , 1289 1303. http www.genetics.org cgi content abstract 134 4 1289 Link ref This effect increases with higher mutation rate but decreases with higher recombination rate. ref cite journal author Hudson RR, Kaplan NL title Deleterious background selection with recombination journal Genetics volume 141 issue 4 pages 1605 17 year 1995 month December pmid 8601498 pmc 1206891 ref See Also Balancing selection Directional selection Disruptive selection Stabilizing selection Assortative mating References Reflist MolecularEvolution genetics stub Category Selection Category Genetics it Selezione ambientale ...   more details



  1. Sex selection

    About the selection of the sex of offspring the evolutionary concept sexual selection Sex selection is the attempt ... implantation methods can be used for social sex selection. Both of them are based on actively rendering ... 59 issue 2 pages 382 6 year 1993 pmid 8425635 ref Currently, approximately 50 gender selection centers in the United States use the Ericsson Method for artificial gender selection. ref name silverman2010a cite web last Silverman, M.D., Ph.D. first Andrew Y. title Gender Selection Ericsson Method url http www.gender select.com gender selection ericsson method accessdate February 13, 2011 ref The Ericsson ... but not pure. This lack of purity explains the 30 chance of gender selection failure of the Ericsson ... ES title Efficiency of sex pre selection of spermatozoa by albumin separation method evaluated ... the egg. Gender selection success rates for IVF PGD are very high. The technique is recommended for couples ... selection determine baby gender with ivfpgd accessdate February 12, 2011 ref Timing methods Timing methods aim to affect the sex ratio of the resultant children by having sexual intercourse at specific ... author Wilcox AJ, Weinberg CR, Baird DD title Timing of sexual intercourse in relation to ovulation ... quality resilient than sperm containing the Y male chromosome. The method advocates Sexual intercourse ... family planning and sex selection fact or fiction? journal American journal of obstetrics and gynecology ... landline content 2006 s1624149.htm Dairy farms use gender selection process , 2006. ref It is currently ... 13, 2011 ref ref cite journal author Mayor S title Specialists question effectiveness of sex selection ... doi 10.1136 bmj.323.7304.67 ref Post implantation Sex selection after implantation can be performed ... of the unwanted sex up for adoption. Less commonly viewed as a method of social sex selection, adoption ... by others. In contrast, in an interview study, sex selection technology providers generally argued that sex selection is an expression of reproductive rights , was initiated and pursued by women ...   more details



  1. The Ultra Selection

    The Ultra Selection may refer to The Ultra Selection Mantronix album The Ultra Selection Mantronix album , 2005 The Ultra Selection Spandau Ballet album The Ultra Selection Spandau Ballet album , 2005 disambiguation Short pages monitor This long comment was added to the page to prevent it from being listed on Special Shortpages. It and the accompanying monitoring template were generated via Template Long comment. Please do not remove the monitor template without removing the comment as well. ...   more details



  1. Column selection

    In computing and user interface engineering , a column selection is a text selection feature found in text editor s which allows the user to select characters in a grid like fashion. This is usually initiated by pressing the alt key instead of the shift key to select text when drag and drop ping. The feature is known by different names in different applications block selection LibreOffice Writer ref http help.libreoffice.org Writer Selection Mode Writer Selection Mode LibreOffice Help ref column selection EditPlus ref http editplus.info wiki FAQ FAQ EditPlus Wiki ref , Vim text editor vi , Emacs non linear text selection TextEdit ref http hints.macworld.com article.php?story 20050509093516708 10.4 Use non linear text selection in TextEdit ref rectangular selection jEdit ref http www.jedit.org users guide selection.html Selecting Text jEdit ref References reflist computing stub Category User interface techniques ...   more details



  1. Truncation selection

    Truncation selection is a Selection genetic algorithm selection method used in genetic algorithm s to select potential candidate solutions for recombination. In truncation selection the candidate solutions are ordered by fitness, and some proportion, p, e.g. p 1 2, 1 3, etc. , of the fittest individuals are selected and reproduced 1 p times. Truncation selection is less sophisticated than many other selection methods, and is not often used in practice. It is used in Muhlenbein s Breeder Genetic Algorithm . ref cite journal journal Evolutionary Computation year 1993 title Predictive Models for the Breeder Genetic Algorithm author H Muhlenbein, D Schlierkamp Voosen url http citeseer.comp.nus.edu.sg rd 0,730860,1,0.25,Download http qSqqSqwww.ais.fraunhofer.deqSq 257EmuehlenqSqpublicationsqSqgmd as ga 93 01.ps ref References reflist compu AI stub comp sci stub bioinformatics stub Category Genetic algorithms ...   more details



  1. Tournament selection

    Tournament selection is a method of selecting an individual from a population of individuals in a genetic algorithm . Tournament selection involves running several tournaments among a few individuals chosen at random from the population. The winner of each tournament the one with the best fitness is selected for Crossover genetic algorithm crossover . Selection pressure is easily adjusted by changing the tournament size. If the tournament size is larger, weak individuals have a smaller chance to be selected. Tournament selection pseudo code choose k the tournament size individuals from the population at random choose the best individual from pool tournament with probability p choose the second best individual with probability p 1 p choose the third best individual with probability p 1 p 2 and so on... Deterministic tournament selection selects the best individual when p 1 in any tournament. A 1 way tournament k 1 selection is equivalent to random selection. The chosen individual can be removed from the population that the selection is made from if desired, otherwise individuals can be selected more than once for the next generation. Tournament selection has several benefits it is efficient to code, works on parallel architectures and allows the selection pressure to be easily adjusted. See Also Fitness proportionate selection Reward based selection References External links http citeseerx.ist.psu.edu viewdoc download jsessionid 621DB995CF9017353A57518149E3CAA4?doi 10.1.1.30.6625&rep rep1&type pdf Genetic Algorithms, Tournament Selection, and the Effects of Noise by Brad L. Miller and David E. Goldberg Portable Document Format PDF link . http citeseerx.ist.psu.edu viewdoc download?doi 10.1.1.19.1850&rep rep1&type pdf Tournament Selection in XCS by Martin V. Butz, Kumara Sastry and David E. Goldberg Portable Document Format PDF link . Category Genetic algorithms ...   more details



  1. Tandem selection

    Tandem selection is a method of artificial selection in which useful traits are selected for sequentially. For instance, one could select for both increased milk Crop yield yield and increased milk fat content in cow s via tandem selection by first selecting those with the best of one trait, say those that produce highest milk yield, and then when that trait is at a satisfactory level, by starting to select for those cows that produce milk with the greatest milk fat content instead. However, for cows to produce milk with greater fat content, yield may have to go down due to, perhaps, limits of the cows metabolism . So, while you are selecting for cows which have increased milk fat content, the yield of milk they are producing may also go down, thus reversing the selection process previously performed to increase it. Therefore, tandem selection has a major disadvantage to other major types of artificial selection for multiple traits, such as culling and index selection , as there is a tendency for the last trait to be lost as the next is being selected. Category Breeding Genetics stub ...   more details



  1. Selection ratio

    unreferenced date August 2010 Selection ratio refers to the ratio of the number job positions to the number of job applicants and is used in the context of selection and recruitment . It is typically assumed to be a number between 0 and 1 where a number closer to zero implies that there are many applicants for any one position. The selection ratio provides information about the value of assessment tools, such as interviews, work samples, and psychometric tests. When the selection ratio is close to one, most applicants will need to be hired in order to fill the available positions. As such knowing that one applicant is likely to perform better than another is of limited value. In contrast when the selection ratio is closer to zero, assessment tools have greater value in indicating which subset of job applicants are likely to perform best. Estimates of the selection ratio can form part of estimates of utility for a given selection and recruitment system. Employment Category Recruitment Category Employment Category Human resource management ja ...   more details



  1. M-1 Selection

    M 1 Selection is series of MMA competitions held by M 1 Global where the next generation of superstars ... them a trip to the championship event where they will compete for a M 1 Selection title. ref http www.m 1global.com 2011 03 07 m 1 selection 2011 e2 80 93 asia opening round 1 announced ref M 1 Selection 1 2009 Season class wikitable border 1 Event Date Location Schedule M 1 Selection 1 13.03.2009 St.Petersburg ... St.Petersburg 4 1 M 1 Selection 2 04.19.2009 St.Petersburg, Russia Team Crazy Bears vs Team Sochi Star 2 3 Team Rus Fighters vs Team Legion 1 4 Team Action Force vs Team Combat Bears 3 2 M 1 Selection ... Action Force 2 3 Team Mockva vs Team Anapa 2 3 M 1 Selection 4 23.06.2009 St.Petersburg, Russia Team Sochi Star vs Team Anapa 1 4 Team Comba Bears vs Team Legion 0 5 M 1 Selection 5 21.07.2009 St.Petersburg, Russia Team Dagestan vs Team Rus Fighters 4 1 Team Mockva vs Team Crazy Bears 3 2 M 1 Selection ... 2 3 M 1 Selection 7 03.10.2009 Moscow, Russia Team Rus Fighters vs Team Combat Bears 2 3 Team Anapa vs Team Crazy Bears 5 0 M 1 Selection 8 04.10.2009 Moscow, Russia Team Mockv vs Team Red Devil 3 2 Team Action Force vs Team Legion 4 1 M 1 Selection 9 13.11.2000 St.Petersburg, Russia Team Sochi Star vs Team Mockva 2 3 Team Combat Bears vs Team Dagestan 2 3 M 1 Selection 10 Final 03.12.2009 St.Petersburg, Russia Team Red Devil vs Team Dagestan 2 3 M 1 Selection Ukraine 1 2009 Season class wikitable border 1 Event Date Schedule M 1 Selection 2009 Ukraine Qualifying Match 1 15.06.2009 Team ... 4 1 M 1 Selection 2009 Ukraine Qualifying Match 2 04.07.2009 Team BC arhat simferopol vs Team KCS Makfight.ua Kiev Region , Makarov 0 5 Tem PBK Faytzona Donetsk vs Team SK Sokol Chermigov 2 3 M 1 Selection ... , Makarov 1 4 Team RFP Lviv vs Team IC Bars Kryvyi Rih 5 0 M 1 Selection 2009 Ukraine 2nd Round ... vs Team IC Bars Kryvyi Rih 5 0 M 1 Selection 2009 Ukraine Semi Final 29.11.2009 Team SK Sokol Chermigov ... RFP Lviv 2 3 M 1 Selection 2009 Ukraine Final 24.12.2009 Team SK Sokol Chermigov vs Team BC Tez Tour ...   more details



  1. Input selection

    In mathematical mathematical model modelling and system identification , the term input selection is used to denote the process of selecting those inputs which are most relevant in describing the output. The inputs which are retained after the input selection process are those that are used for the actual modelling. Category Mathematical modeling Mathapplied stub ...   more details




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