Image Two Gannets edit 2.jpg thumb 240px Northern Gannet pair In biology , a pair bond is the strong affinity that develops in some species between the males and females in a pair, potentially leading to breeding. Pair bonding is a term coined in the 1940s ref Cite journal contribution Pair bond year 2005. title Oxford English Dictionary postscript Bot inserted parameter. Either remove it or change its value to . for the cite to end in a . , as necessary. ref that is frequently used in sociobiology and evolutionary psychology circles. The term often implies either a lifelong socially monogamous relationship or a stage of mating interaction in socially monogamous species. It is sometimes used in reference to human relationships. Monogamous vole s, such as prairie vole s, have significantly greater density and distribution of vasopressin receptors in their brain when compared to polygamous voles. These differences are located in the ventral forebrain and the dopamine mediated reward pathway ... behaviors, and in monogamous prairie voles are important for facilitation of pair bonding ..., from their 2001 book The Myth of Monogamy , there are several varieties of pair bonds File Schakale Kreuzkap 02.jpg thumb Black backed jackal s are one of very few monogamous mammals. This pair works ... dies. Short term pair bond a transient mating or associations Long term pair bond bonded for a significant portion of the life cycle of that pair Lifelong pair bond mated for life Social pair bond attachments for territorial or social reasons, as in cuckold situations Clandestine pair bond quick extra pair copulations Dynamic pair bond e.g. gibbon mating systems being analogous to swinging swingers ... tucked away inside the shells he goes seeking extra pair copulations with the mates of other males ... pair copulation frequently occurs in monogamous birds in which a social father provides intensive ... 7136 9 External links http www.nature.com neuro journal v7 n10 abs nn1327.html The neurobiology of pair ... more details
Image DiffSignaling.png thumb upright 1.3 right Elimination of noise by using a differential pair of conductors A differential pair is a pair of conductors used for differential signaling . Differential pairs are usually found on a printed circuit board , in cables twisted pair cables, ribbon cable s , and in connectors. The term can also refer to a pair of transistors used as the input stage of a differential amplifier . Uses The technique minimises crosstalk electronics and electromagnetic interference , both noise emission and noise acceptance, and can achieve a constant and or known characteristic impedance , allowing impedance matching techniques important in a high speed signal transmission line or high quality balanced line and balanced circuit audio signal path. Differential pairs include twisted pair cables, shielded cable shielded and unshielded microstrip and stripline differential pair routing techniques on printed circuit board s The latter can be considered as a PCB implementation of the well known twisted pair cable, a common implementation of the differential pair. Differential pairs are generally used to carry differential or semi differential signals, such as high speed digital serial interfaces including LVDS , SATA , Hypertransport , Ethernet , Serial Digital Interface , etc. or else high quality and or high frequency analog signals e.g. video signal s, professional audio signals, etc. Data rates of some interfaces implemented with differential pairs Serial ATA 1.2 Gbit s Hypertransport 1.6 Gbit s Infiniband 2.5 Gbit s PCI Express 2.5 Gbit s Serial ATA II 2.4 Gbit s XZUI 3.125 Gbit s Serial ATA III 4.8 Gbit s PCI Express II 5.0 Gbit s 10 GbE 10 Gbit s References reflist See also Differential TTL Low voltage differential signaling LVDS Signal integrity DisplayPort PCI Express Backplane s DDR2 SDRAM Links http www.altera.com literature an an075.pdf High ... AP0135 20Interactive 20and 20Differential 20Pair 20Routing.PDF Interactive and Differential Pair ... more details
A kinematic pair is a connection between two bodies that imposes constraints on their relative movement. Franz Reuleaux introduced the kinematic pair as a new approach to the study of machines ref Reuleaux, F., 1876 The Kinematics of Machinery, trans. and annotated by A. B. W. Kennedy , reprinted by Dover, New York 1963 ref that provided an advance over the notion of elements consisting of simple machine s. ref A. P. Usher, 1929, A History of Mechanical Inventions, Harvard University Press, reprinted by Dover Publications 1968 . ref Hartenberg & Denavit ref R. S. Hartenberg and J. Denavit 1964 http kmoddl.library.cornell.edu bib.php?m 23 Kinematic synthesis of linkages , pp 17,18, New York McGraw Hill. ref presents the definition of a kinematic pair In the matter of connections between rigid bodies, Reuleaux recognized two kinds he called them higher and lower pairs of elements . With higher pairs, the two elements are in contact at a point or along a line, as in a ball bearing or disk cam and follower the relative motions of coincident points are dissimilar. Lower pairs are those for which area contact may be visualized, as in pin connections, crossheads, ball and socket joints and some ... of the parts as it would with higher pairs. Lower pair A lower pair is an ideal joint that constrains ... body. We have the following cases A revolute pair, or hinged joint, requires a line in the moving ..., which therefore has one degree of freedom. A screw pair requires cut threads in two links ... degrees of freedom. Higher pairs Generally, a higher pair is a constraint that requires a curve or surface ..., the contact between a cam and its follower is a higher pair called a cam joint . Similarly, the contact ... pair A wrapping pair is a constraint that comprises belts, chains, and such other devices. A belt driven pulley is an example of this pair. References reflist Hartenberg, R.S. & J. Denavit 1964 http ... Hill, online link from Cornell University . KinematicPair DEFAULTSORT Kinematic Pair Category Kinematics ... more details
In algebraic geometry , a logarithmic pair consists of a Algebraic variety variety , together with a divisor along which one allows mild logarithmic singularities. They were studied by harvtxt Iitaka 1976 . Definition A boundary Q divisor on a variety is a Q divisor D of the form &Sigma d sub i sub D sub i sub where the D sub i sub are the distinct irreducible components of D and all coefficients are rational numbers with 0&le d sub i sub &le 1. A logarithmic pair , or log pair for short, is a pair X , D consisting of a normal variety X and a boundary Q divisor D . The log canonical divisor of a log pair X , D is K D where K is the canonical divisor of X . A logarithmic 1 form on a log pair X , D is allowed to have logarithmic singularities of the form d log z d z z along components of the divisor given locally by z 0. References Citation authorlink Shigeru Iitaka last1 Iitaka first1 Shigeru title Logarithmic forms of algebraic varieties id MathSciNet id 0429884 year 1976 journal Journal of the Faculty of Science. University of Tokyo. Section IA. Mathematics issn 0040 8980 volume 23 issue 3 pages 525 544 Citation last1 Matsuki first1 Kenji title Introduction to the Mori program publisher Springer Verlag location Berlin, New York series Universitext isbn 978 0 387 98465 0 id MathSciNet id 1875410 year 2002 Category algebraic geometry ... more details
Orphan date November 2006 In the United States Senate and United States House of Representatives House of representatives , a live pair is an informal voluntary agreement between Members, not specifically authorized or recognized by House or Senate rules. Live pairs are agreements which Members employ to nullify the effect of absences on the outcome of recorded votes. If a Member expects to be absent for a vote, he or she may pair off with another Member who will be present and who would vote on the other side of the question, but who agrees not to vote. The Member in attendance states that he or she has a live pair, announces how each of the paired Members would have voted, and then votes present. In this way, the other Member can be absent without affecting the outcome of the vote. Because pairs are informal and unofficial arrangements, they are not counted in vote totals however paired Members positions do appear in the Congressional Record . Category Terminology of the United States Congress ... more details
In mathematics , particularly algebraic topology , a pair of spaces is an ordered pair math X , A where math X is a topological space and math A a subspace with the subspace topology . The use of pairs of spaces is sometimes more convenient and technically superior to taking a quotient space of math X by math A . Pairs of spaces occur centrally in relative homology . ref name hatcher cite book first Allen last Hatcher authorlink Allen Hatcher year 2002 title Algebraic Topology publisher Cambridge University Press isbn 0 521 79540 0 url http www.math.cornell.edu hatcher AT ATpage.html ref A related concept is that of a triple math X , A , B , with math B A X . Triples are used in homotopy theory . Often, for a pointed space with basepoint at math x sub 0 sub , one writes the triple as math X , A , B , x sub 0 sub , where math x sub 0 sub B A X . ref name hatcher References Reflist DEFAULTSORT Pair Of Spaces Category Algebraic topology Category General topology ... more details
unreferenced date December 2008 Breeding pair is a pair of animal s which cooperate over time to produce offspring with some form of a bond between the individuals. For example, many bird s mate for a breeding season or sometimes for life. They may share some or all of the tasks involved building a nest, incubating the egg biology egg s and feeding and protecting the young. The term is not generally used when a male has a harem zoology of female s, such as with mountain gorilla s. True breeding pairs are usually found only in vertebrate s, but there are notable exceptions, such as the Lord Howe Island stick insect . True breeding pairs are rare in amphibians or reptiles, but fairly common with fish e.g. Discus fish discus and especially bird s. Breeding pair arrangements are rare in mammal s, where the prevailing patterns are either that the male and female only meet for copulation e.g. brown bear or that dominant males have a harem zoology of females e.g. walrus . Category Breeding Category Mating Category Reproduction eo Reproduktanta paro ... more details
Unreferenced date August 2008 In mathematics , more specifically algebraic topology , a pair math X,A math is short hand for an inclusion of topological spaces math i colon A hookrightarrow X math . Sometimes math i math is assumed to be a cofibration . A morphism from math X,A math to math X ,A math is given by two maps math f colon X rightarrow X math and math g colon A rightarrow A math such that math i circ g f circ i math . Pairs come up mainly in homology theory and cohomology theory , where chains in math A math are made equivalent to 0, when considered as chains in math X math . Heuristically, one often thinks of a pair math X,A math as being akin to the quotient space math X A math . There is a functor from spaces to pairs, which sends a space math X math to the pair math X, varnothing math . References reflist Category Algebraic topology fr Paire d espaces ... more details
Electron s, within an electron shell around an atom , tend to distribute themselves as far apart from each other, within the given shell, as they can due to each one being negatively charged . The mutual repulsion is slightly reduced between two electrons, though, if they have opposite Electron magnetic dipole moment spins . Consequently, as an electron shell starts to become filled up, the electrons become organised in pairs. Covalent bond s form between atoms by sharing electrons in their outermost electron shells, in such a way as to give the effect of filling those incomplete shells. Some of the pairs of electrons in such a shell, therefore, are already part of the original atom, and are referred to as lone pair s. The remainder are shared with the other atom, and constitute the bond itself with that atom these form the shared pair s . ref Coulson, E.H., et al. 1971 . Chemistry students book 1 topics 1 to 12 . Nuffield Foundation, Penguin Books Ltd., Harmondsworth, Middlesex, UK, pp 244 245. ISBN 14 082651 3. ref In a large number of cases, the electrons in a shared pair are contributed, one from each atom. However, this is not always the case, leading to dipolar bond dative or dipolar bonds . References Reflist DEFAULTSORT Shared Pair Category Chemical bonding Chem stub ... more details
In statistics , a concordant pair is a pair of a two variable Multivariate statistics bivariate observation data set X sub 1 sub , Y sub 1 sub and X sub 2 sub , Y sub 2 sub , where math sgn X 2 X 1 sgn Y 2 Y 1 math Correspondingly, a discordant pair is a pair, as defined above, where math sgn X 2 X 1 sgn Y 2 Y 1 math and the sign function , often represented as sgn , is defined as math sgn x left begin matrix 1 & & x 0 0 & & x 0 1 & & x 0 end matrix right. math See also Kendall tau distance Spearman s rank correlation coefficient Rank correlation sign function References http www.utdallas.edu herve Abdi KendallCorrelation2007 pretty.pdf Kendall rank correlation. Kendall, M. 1948 Rank Correlation Methods , Charles Griffin & Company Limited Kendall, M. 1938 A New Measure of Rank Correlation , Biometrica, 30, 81 89. External links http www groups.dcs.st and.ac.uk history Biographies Kendall.html MacTutor David George Kendall http janus.lib.cam.ac.uk db node.xsp?id EAD 2FGBR 2F0014 2FKNDL Janus The Papers of Professor David Kendall Category Non parametric statistics Category Statistical terminology ... more details
Unreferenced date August 2011 The Wild Pair , whose real names are Bruce DeShazer and Marv Gunn , was a singing duo who were primarily known for their 1990 hit duet with Paula Abdul , Opposites Attract in the video they were credited as MC Skat Kat . They have also provided background vocals on her other hits, Forever Your Girl song Forever Your Girl and It s Just The Way That You Love Me . Opposites Attract was an international hit. In the United States U.S. , it peaked at 1 on Billboard s Hot 100 Singles, 3 R&B, and 24 Dance Club Play. The song was featured on 3 of her albums, Forever Your Girl 1 Billboard 200, 10 R&B, RIAA certified 7X Platinum , Shut Up and Dance album Shut Up And Dance 7 Billboard 200, 65 R&B, RIAA certified Platinum , and the 2000 release Greatest Hits . Opposites Attract was not the Wild Pair s only hit. In 1992, singer Stacy Earl released her single Romeo & Juliet which was a duet with The Wild Pair. The song reached the Top 40 of Billboard s Hot 100 singles chart. spacing US band stub DEFAULTSORT Wild Pair, The Category Musical duos ... more details
In the knot theory mathematical theory of knots , the Perko pair , named after Kenneth Perko, is a pair of entries in classical knot tables that actually represent the same knot. In Dale Rolfsen Rolfsen s knot table, this supposed pair of distinct knots is labeled 10 sub 161 sub and 10 sub 162 sub . In 1974, while working to complete the Tait&ndash Little knot tables of knots up to 10 crossings dating from the late 19th century , Perko found the duplication in C. N. Little s table. This duplication had been missed by John Horton Conway several years before in his knot table and subsequently found its way into Rolfsen s table. gallery caption The Perko Pair widths 320px heights 300px Image Ten onehundredandsixtyone.gif 10 sub 161 sub Image Ten onehundredandsixtytwo.gif 10 sub 162 sub gallery References Kenneth A. Perko Jr., On the classification of knots. Proc. Amer. Math. Soc. 45 1974 , 262 266. Dale Rolfsen, Knots and Links see Appendix C for the knot table , 1976, ISBN 0 914098 16 0 External links http katlas.org wiki 10 161 10 161 at Knot Atlas Category Knot theory knottheory stub ... more details
File Pair programming 1.jpg thumb Pair programming upright 1.5 Pair programming is an agile software ... ref cite journal last Williams first Laurie title Integrating Pair Programming into a Software Development ... Laurie title The Costs and Benefits of Pair Programming journal Proceedings of the First International ... experience and task complexity. ref cite journal title Evaluating performances of pair designing ... cite book last Williams first Laurie last2 Kessler first2 Robert title Pair Programming Illuminated publisher Addison Wesley year 2003 pages 27 28 isbn 0 201 74576 3 quote With pair programming, four ... first2 Robert title Pair Programming Illuminated publisher Addison Wesley year 2003 pages 26 isbn ... meta analysis concluded that pair programming is not uniformly beneficial or effective because many other factors besides the choice of whether to use pair programming have large effects on the outcome ... Dyb , Erik Arisholm, Dag I.K. Sj berg title The Effectiveness of Pair Programming A Meta Analysis ... 10.1016 j.infsof.2009.02.001 ref The meta study found that pair programming tends to reduce development time somewhat and produces marginal positive effects on code quality, but that pair programming ... programming. The authors suggest that studies of pair programming suffer from publication bias whereby studies that would not show that pair programming is beneficial were either not undertaken, not submitted ... last Lui first Kim Man title Pair programming productivity Novice novice vs. expert expert journal ... tasks, which the pair already fully understands, pairing results in a net drop in productivity ..., Tore Dyb , Dag I.K. Sj berg title Evaluating Pair Programming with Respect to System Complexity ... last Stephens first Matt coauthors Doug Rosenberg title Will Pair Programming Really Improve Your ... passes between pair programmers as they work. They share knowledge of the specifics of the system ... Williams first Laurie last2 Kessler first2 Robert title Pair Programming Illuminated publisher Addison ... more details
Other uses2 Dirty Pair Infobox comic book title Wikipedia WikiProject Comics title The Dirty Pair noimage ... Comics ref name eclipse Eclipse Comics published Dirty Pair 4 issues, Dec. 1988 April 1989 , Dirty Pair II 5 issues, June 1989 March 1990 , and The Dirty Pair III 5 issues, Aug. 1990 Aug. 1991 . Eclipse ... United States Dark Horse Comics ref Dark Horse Comics published Dirty Pair Sim Hell 4 issues, May Aug. 1993 , The Dirty Pair Fatal But Not Serious 5 issues, July Nov. 1995 , and Dirty Pair Run ... sort Dirty Pair TPB Biohazards ISBN 1569713391 TPB1 Dangerous Acquaintances ISBN1 1560601167 TPB2 ... 1569711720 TPB5 Run From the Future ISBN5 1569715777 The Dirty Pair is an original English language manga written and illustrated by Adam Warren , based on the Dirty Pair Character arts characters created ... rights to create comic versions of the Dirty Pair in 1988. The first three limited series, reprinted ... Pair , a nickname given to them by the press due to their bad luck with their missions, which ... institute. The pair cheated every which way possible the really short skirts were Kei s idea ... friends, always pairing up together to deck anyone that calls them by their Dirty Pair nickname. Kei ... of the pair, outgoing, loud, and boisterous. She has remarked that she is the exciting half ... perps in Run From the Future . Publications Biohazards Image Dirty pair biohazards issue 1.jpg thumb 150px Cover to Dirty Pair Biohazards 10th Anniversary Special Edition by Dark Horse Comics 2nd ... Warren and illustrated by Warren, based on the Dirty Pair characters created by Haruka Takachiho. The series ... title Dirty Pair Biohazards publisher Dark Horse Comics date September 1998 isbn 1 56971 339 1 ref ... industrialist maimed in an accident apparently staged by O Donnell. Enter the Dirty Pair, who ... warbeast, O Donnell leads the Pair to Streib s lab, obliterating most of his cronies and a sizable ... left 150px Cover to Dirty Pair Dangerous Acquaintances English edition, 1991 . Dangerous Acquaintances ... more details
Blumlein Pair is the name for a Stereophonic sound Various methods of stereo recording stereo recording technique invented by Alan Blumlein for the creation of recordings that, upon replaying through headphones or loudspeakers, recreate the spatial characteristics of the recorded signal. The pair consists of an array of two matched microphone s of bi directional figure 8 pickup pattern, positioned 90 from each other. Ideally, the transducers should occupy the same physical space as this is impossible the microphone capsules are placed as close to each other as physically possible, generally with one centered directly above the other. The array is oriented so that the line bisecting the angle between the two microphones points towards the sound source to be recorded see diagram . The pickup patterns of the pair, combined with their positioning, delivers a high degree of stereo separation in the source signal as well as the room ambiance. The Blumlein pair produces an exceptionally realistic stereo image, but the quality of recordings is highly dependent on the acoustics of the room and the size of the sound source. Both ribbon and condenser microphones can be used for Blumlein pair recording. A few types of stereo ribbon microphones B & O, Royer, AEA have even been purpose built for just this type of recording. Several types of stereo condenser microphone Neumann, AKG, Schoeps have ... Pair. During the period when Bumlein s patent http worldwide.espacenet.com publicationDetails originalDocument ... February 1958 pages 102 117 ref It is unclear when this approach became known as the Blumlein Pair, although ... Red dot is microphone, viewed from above small Blumlein Pair Array br 2 crossed Figure 8s br Blumlein Pair Array br small Small arrows indicate front of individual br microphones, large arrow indicates ... stereo A home built Blumlein Pair Ribbon Microphone http www.sengpielaudio.com Visualization Blumlein E.htm Visualization XY Stereo System Blumlein Pair Eight Eight 90 Intensity Stereo Category Microphones ... more details
In mathematics , an ordered pair a , b is a pair of mathematical object s. In the ordered pair a , b , the object a is called the first entry, and the object b the second entry of the pair. Alternatively ... pair. The order in which the objects appear in the pair is significant the ordered pair a , b is different from the ordered pair b , a unless a b . Ordered pairs are also called tuple 2 tuples ... of an ordered pair can be other ordered pairs, enabling the recursive definition of ordered n tuple ... , c , i.e., as one pair nested in another. Cartesian product s and binary relations and hence the ubiquitous ... of the ordered pair is math a 1, b 1 a 2, b 2 quad text if and only if quad a 1 a 2 text and b ... the ordered pair may be denoted by the variant notation math left langle a,b right rangle. math Defining the ordered pair using set theory The above characteristic property of ordered pairs is all that is required to understand the role of ordered pairs in mathematics. Hence the ordered pair can be taken ... sets of some sort. Hence if the ordered pair is not taken as primitive, it must be defined ... pair is a paradigm for the clarification of philosophical ideas see Word and Object , section 53 ... about theoretical entities . ref Several set theoretic definitions of the ordered pair are given below ... pair in 1914 ref Wiener s paper A Simplification of the logic of relations is reprinted, together ... pbk. . van Heijenoort states the simplification this way By giving a definition of the ordered pair ... 1967 224. van Heijenoort observes that the resulting set that represents the ordered pair has ..., under certain circumstances, the type can be reduced to 1 or 0. ref of the ordered pair a , b math ... are identical math x, x x , x, x x , x x math Given some ordered pair p , the property x is the first ... coordinate of a pair using the notation for Intersection set theory Arbitrary intersections arbitrary ... pair is adequate in that it satisfies the characteristic property that an ordered pair must satisfy ... more details
In mathematics , an unordered pair or pair set is a Set mathematics set of the form a , b , i.e. a set having two elements a and b with no particular relation between them. In contrast, an ordered pair a , b has a as its first element and b as its second element. While the two elements of an ordered pair a , b need not be distinct, modern authors only call a , b an unordered pair if a b . ref Citation last1 D ntsch first1 Ivo last2 Gediga first2 G nther title Sets, Relations, Functions publisher Methodos series Primers Series isbn 978 1 903280 00 3 year 2000 . br Citation last1 Fraenkel first1 Adolf title Einleitung in die Mengenlehre publisher Springer Verlag location Berlin, New York year 1928 . br Citation last1 Roitman first1 Judith title Introduction to modern set theory publisher John Wiley & Sons location New York isbn 978 0 471 63519 2 year 1990 . br Citation last1 Schimmerling first1 Ernest title Undergraduate set theory year 2008 . ref But for a few authors a Singleton mathematics singleton is also considered an unordered pair, although today, most would say that a,a is a multiset . It is typical to use the term unordered pair even in the situation where the elements a and b could be equal, as long as this equality has not yet been established. A set with precisely 2 elements is also called a finite set 2 set or rarely a binary set . An unordered pair is a finite set its cardinality number of elements is 2 or if the two elements are not distinct 1. In axiomatic set theory , the existence of unordered pairs is required by an axiom, the axiom of pairing . More generally, an unordered n tuple is a set of the form a sub 1 sub , , a sub 2 sub ,... a sub n sub . ref Citation last1 Hrbacek first1 Karel last2 Jech first2 Thomas author2 link Thomas Jech title Introduction to set theory publisher Dekker location New York edition 3rd isbn 978 0 8247 7915 3 year 1999 . br Citation last1 Rubin first1 Jean E. title Set ... more details
Image GB Pair at Henley 2004.JPG thumb A coxless pair which is a sweep oar boat. The rower on the left of the photo, or the bow of the boat is rowing starboard or bowside . The rower on the right of the photo and closest to the stern of the boat is rowing port or strokeside . A Coxless pair is a rowing boat used in the rowing sport sport of competitive rowing . It is designed for two rowers, who propel the boat with Sweep rowing sweep oars . The crew consists of a pair of rowers, each having one oar , one on the stroke rowing stroke side rower s right hand side and one on the bow rowing bow side rower s lefthand side . As the name suggests, there is no Coxswain rowing coxswain on such a boat, and the two rowers must co ordinate steering and the proper timing of oar strokes between themselves or by means of a steering installation which is operated by a foot from one of the rowers. The equivalent boat when it is steered by a cox is referred to as a coxed pair . Racing shell Racing boat s often called shells are long, narrow, and broadly semi circular in cross section in order to reduce drag to a minimum. Originally made from wood , shells are now almost always made from a composite material usually carbon fibre reinforced plastic for strength and weight advantages. Pairs have a fin towards the rear, to help prevent roll and yaw. The riggers are staggered alternately along the boat so that the forces apply asymmetrically to each side of the boat. A coxless pair is often considered the most difficult boat to row, as each rower must balance his her side in cooperation with the other, apply equal power, place their catch and extract the blade simultaneously in order to move the boat efficiently. It requires excellent technique, communication and experience. Coxless pair is one of the classes recognized by the International Rowing Federation and is competed in the Olympic Games ... it Due senza no Toer uten styrmann simple Coxless pair sl Dvojec brez krmarja ... more details
Otheruses4 an object in hyperbolic geometry the article of clothing trousers File Pair of pants cobordism pantslike .svg thumb right A pair of pants File Worldsheet.png thumb right Six pairs of pants sewn together to form an open surface of genus two with four boundary components. In mathematics , a pair of pants is a simple two dimensional surface resembling a pair of trousers pants topologically, it is a sphere with three holes in it. Pairs of pants admit hyperbolic metrics, and their isometry class is determined by the lengths of the boundary curves the cuff lengths , or dually the distances between the boundaries the seam lengths . In hyperbolic geometry all three holes are considered equivalent no distinction is made between legs and waist . In cobordism theory the holes are not equivalent a pair of pants is a cobordism between one circle the waist and two circles the legs . Hyperbolic geometry In hyperbolic geometry , pairs of pants are sewn together, leg to leg, or leg to waist there is no distinction between the legs and the waist , to create Riemann surface s of arbitrary genus mathematics genus conversely, Riemann surfaces can be cut into pairs of pants by cutting along closed ... 3 g &minus 3 for g 1. Formally, a pair of pants consists of two hexagonal fundamental polygon s stitched together at every other side. Topologically, a pair of pants is the two ... . A pair of pants, as a subset of a thrice punctured sphere, admits a hyperbolic structure, unlike ... group on two generators one generator for each circle . A pair of pants is analogous to a fattened ... a pair of pants. In cobordism theory, a pair of pants is a cobordism between a single ... because a circle bounds a disk, and from this point of view a pair of pants is the connected sum ... , a pair of pants corresponds to multiplication or comultiplication in a Frobenius algebra , depending ... maps to the underlying vector space of the algebra, while the pair of pants gives a product ... more details
portal Software Testing Pair testing is a software development technique in which two team members work together at one keyboard to test the software application . One does the testing and the other analyzes or reviews the testing. This can be done between one software testing tester and software developer developer or business analyst or between two testers with both participants taking turns at driving the keyboard. Description This can be more related to pair programming and exploratory testing of agile software development where two team members are sitting together to test the software application . This will help both the members to learn more about the application. This will narrow down the root cause of the problem while continuous testing. Developer can find out which portion of the source code is affected by the bug. This track can help to make the solid test cases and narrowing the problem for the next time. Benefits and drawbacks The developer can learn more about the software application by exploring with the Software testing tester . The Software testing tester can learn more about the software application by exploring with the developer. Less participation is required for testing and for important bugs root cause can be analyzed very easily. The tester can very easily test the initial bug fixing status with the developer. This will make the developer to come up with great testing scenarios by their own This can not be applicable to scripted testing where all the test cases are already written and one has to run the scripts. This will not help in the evolution of any issue and its impact. Usage This is more applicable where the requirements and specifications ... the same principles of pair programming the two team members should be in the same level. See also Pair programming Exploratory testing Agile software development Software testing All pairs testing ... node view 272 Pair testing with developer http www.istqb.org ISTQB Official website Category Software ... more details
Refimprove article date September 2007 Image 25 pair color code chart.svg right thumb 25 pair color code Chart Twisted pair cabling is a type of wiring in which two conductors of a single Electronic circuit ... from external sources for instance, electromagnetic radiation from unshielded twisted pair UTP cables ... In balanced pair operation, the two wires carry equal and opposite signals and the destination detects ... other for many miles. One pair can induce crosstalk in another and it is additive along the length ... dmray cite web title Crosstalk dependence on number of turns inch for twisted pair versions of the endcap ... to FTP Foil metal foil ed twisted pair and STP shielded twisted pair cabling, UTP unshielded twisted pair cable is not surrounded by any shielding. It is the primary wire type for telephone usage ... balanced lines with periodic transpositions still survive today in some rural areas. Twisted pair ... ref By 1900, the entire American telephone line network was either twisted pair or open wire with transposition ..., and only handled or even seen by telephone workers. Unshielded twisted pair UTP File UTP cable.svg thumb Unshielded twisted pair UTP cables are found in many Ethernet networks and telephone systems ... 25 pair color code originally developed by AT&T . A typical subset of these colors white blue ... a large cable. Image UTP cable.jpg thumb Unshielded twisted pair cable with different twist rates ... data networking standard, utilizes UTP cables. Twisted pair cabling is often used in data networks ... without a UTP output. Only one pair is necessary for each video signal. clear Cable shielding ... Twisted pair cables are often shielded in an attempt to prevent electromagnetic interference. Because ... twisted pair cable has a special grounding wire added called a drain wire. This shielding ... pair STP or STP A 150 ohm STP shielded twisted pair cable defined by the IBM Cabling System specifications ... pairs from crosstalk. Screened twisted pair ScTP or F TP ScTP cabling offers an overall sheath ... more details
introducing a ban on pair trawling for bass in UK territorial waters ref The South west Territorial Waters Prohibition of Pair Trawling Amendment Order 2005 http www.defra.gov.uk fish sea conserve trawl.htm ... more details
For the 1922 film starring Oliver Hardy A Pair of Kings film Infobox Album See Wikipedia WikiProject Albums Name A Pair of Kings Type studio Longtype Artist Riders in the Sky band Riders in the Sky Cover A Pair of Kings.jpg Released February 19, 2002 Recorded Genre Western music North America Western Length Label Oh Boy Records Oh Boy Producer Joey Miskulin Last album Woody s Roundup A Rootin Tootin Collection of Woody s Favorite Songs br 2000 This album A Pair of Kings br 2002 Next album Ridin the Tweetsie Railroad br 2002 Album ratings rev1 Allmusic rev1Score Rating 3 5 ref Allmusic class album id r574036 ref A Pair of Kings is a studio recording released by the Western music North America Western band Riders in the Sky band Riders in the Sky on February 19, 2002. It is available as a single CD. The pair of kings referenced in the album s title are featured Riders Joey the Cowpolka King Miskulin and Woody Paul, King of the Cowboy Fiddlers. Allmusic stated in their review These four diehards are one of the few acts still making records in the traditional cowboy style, and their releases each deserve all of the recognition they get. Track listing We re Burnin Moonlight Joey Miskulin 2 15 Clarinet Polka 2 17 You Stole My Wife You Horsethief Reif, Sims 2 43 How High the Moon Hamilton, Lewis 3 34 Texas Sand 2 21 Celtic Medley Annie Laurie Scotland the Brave Haste to the Wedding 3 29 I m an Old Cowhand From the Rio Grande Mercer 2 38 Jessie Polka 2 32 Never Go to Church on Sunday Paul 2 22 The Bunkhouse Race Dizzy Fingers 2 08 Don t Sweetheart Me Friend, Tobias 2 27 Katherine s Waltz Paul 2 51 Personnel Douglas B. Green a.k.a. Ranger Doug vocals, guitar Paul Chrisman a.k.a. Woody Paul vocals, fiddle Fred LaBour a.k.a. Too Slim vocals, bass Joey Miskulin a.k.a. Joey The Cowpolka King ... Notes reflist DEFAULTSORT Pair Of Kings, A Category 2002 albums Category Riders in the Sky albums ... more details
Refimprove date December 2009 In relation to psychology to pair by association is the action of associating a stimulus with an arbitrary idea or object, to elicit a response, usually emotional. This is done by repeatedly pairing the stimulus with the arbitrary object. For example, repeatedly pairing images of beautiful women in bathing suits, elicits a sexual response in most men. Advertising agencies, for example, repeatedly pair products with attractive women in television commercials. This is with the intention of eliciting an emotional or sexually aroused response in the consumer. This causes the consumer to be more likely to buy the product than when presented with a similar but competing product without such an association. Verbal behavior Behaviorists will often use paired association tests to determine the strength of verbal behavior , in particular, B.F Skinner s concept of the verbal response class called intraverbals. ref Daniel J. Moran, PhD & William S. Verplanck, PhD. 2003 The Associate Technique Assessing Intraverbal Repertoires in the Classroom. The Behavior Analyst Today , 4 4 , Pg. 346 360 http www.baojournal.com BAO ref See also Psychology Conditioning Ivan Pavlov Association psychology References Reflist DEFAULTSORT Pair By Association Category Behaviorism Category Learning cognitive psych stub ... more details
A pair conversion instrument detects high energy gamma rays by providing an environment generally a thin foil of dense metal, commonly tungsten in which they tend to generate electron positron pairs, and then using standard particle physics techniques such as a microstrip detector to detect these particles. Usually there are several stacks of conversion foils and particle detectors placed on top of one another, so that the electron positron pairs can be tracked as they pass through consecutive detectors and at the bottom of the stack one commonly finds a calorimeter particle physics calorimeter capable of measuring the energy of the electron and the positron and inferring the energy of the incoming gamma ray. An anticoincidence shield of some kind is needed so that charged particles entering the device from outside are not confused with electron positron pairs generated in the conversion foils. One of the larger operational pair conversion telescopes is the Large Area Telescope on Gamma ray Large Area Space Telescope GLAST . Space based pair conversion detectors tend to make for rather expensive missions, since they unavoidably contain several hundred kilograms of lead or tungsten. http cosmology.berkeley.edu inpac inpac retreat slides Hiroshima 3 9.pdf has a slide illustrating the design of LAT. Category Photonics ... more details
Encyclopedia
top
