Things You May Want to Know About Q&a Tester

An overview of q&a tester

In linear algebra, a Block LU decomposition is a matrix decomposition of a block matrix into a lower block triangular matrix L and an upper block triangular matrix U. This decomposition is used in numerical analysis to reduce the complexity of the block matrix formula

Things You May Want to Know About Q&a Tester 1

Block Cholesky decomposition of q&a tester

Consider a block matrix: ( A B C D ) ( I C A 1 ) A ( I A 1 B ) ( 0 0 0 D C A 1 B ) , displaystyle beginpmatrixA&BC&DendpmatrixbeginpmatrixICA^-1endpmatrix,A,beginpmatrixI&A^-1Bendpmatrixbeginpmatrix0&00&D-CA^-1Bendpmatrix,

where the matrix A displaystyle beginmatrixAendmatrix is assumed to be non-singular, I displaystyle beginmatrixIendmatrix is an identity matrix with proper dimension, and 0 displaystyle beginmatrix0endmatrix is a matrix whose elements are all zero.

We can also rewrite the above equation using the half matrices: ( A B C D ) ( A 1 2 C A 1 2 ) ( A 1 2 A 1 2 B ) ( 0 0 0 Q 1 2 ) ( 0 0 0 Q 1 2 ) , displaystyle beginpmatrixA&BC&DendpmatrixbeginpmatrixA^frac 12CA^-frac 12endpmatrixbeginpmatrixA^frac 12&A^-frac 12Bendpmatrixbeginpmatrix0&00&Q^frac 12endpmatrixbeginpmatrix0&00&Q^frac 12endpmatrix,

where the Schur complement of A displaystyle beginmatrixAendmatrix

in the block matrix is defined by Q D C A 1 B displaystyle beginmatrixQD-CA^-1Bendmatrix

and the half matrices can be calculated by means of Cholesky decomposition or LDL decomposition.

The half matrices satisfy that A 1 2 A 1 2 A ; A 1 2 A 1 2 I ; A 1 2 A 1 2 I ; Q 1 2 Q 1 2 Q . displaystyle beginmatrixA^frac 12,A^frac 12A;endmatrixqquad beginmatrixA^frac 12,A^-frac 12I;endmatrixqquad beginmatrixA^-frac 12,A^frac 12I;endmatrixqquad beginmatrixQ^frac 12,Q^frac 12Q.endmatrix

Thus, we have ( A B C D ) L U , displaystyle beginpmatrixA&BC&DendpmatrixLU,

where L U ( A 1 2 0 C A 1 2 0 ) ( A 1 2 A 1 2 B 0 0 ) ( 0 0 0 Q 1 2 ) ( 0 0 0 Q 1 2 ) . displaystyle LUbeginpmatrixA^frac 12&0CA^-frac 12&0endpmatrixbeginpmatrixA^frac 12&A^-frac 12B0&0endpmatrixbeginpmatrix0&00&Q^frac 12endpmatrixbeginpmatrix0&00&Q^frac 12endpmatrix.

The matrix L U displaystyle beginmatrixLUendmatrix can be decomposed in an algebraic manner into L ( A 1 2 0 C A 1 2 Q 1 2 ) a n d U ( A 1 2 A 1 2 B 0 Q 1 2 ) . displaystyle LbeginpmatrixA^frac 12&0CA^-frac 12&Q^frac 12endpmatrixmathrm and UbeginpmatrixA^frac 12&A^-frac 12B0&Q^frac 12endpmatrix.

Block LDU decomposition of q&a tester

An alternative to LU decomposition is LDU (Lower-Diagonal-Upper) decomposition if A textstyle A is non-singular, which may be simpler to implement: [ A B C D ] [ I 0 C A 1 I ] [ A 0 0 D C A 1 B ] [ I A 1 B 0 I ] displaystyle beginbmatrixA&BC&DendbmatrixbeginbmatrixI&0CA^-1&IendbmatrixbeginbmatrixA&00&D-CA^-1BendbmatrixbeginbmatrixI&A^-1B0&Iendbmatrix

This may be useful for inversion if also D C A 1 B textstyle D-CA^-1B is non-singular: [ A B C D ] 1 [ I A 1 B 0 I ] 1 [ A 0 0 D C A 1 B ] 1 [ I 0 C A 1 I ] 1 [ I A 1 B 0 I ] [ A 0 0 D C A 1 B ] 1 [ I 0 C A 1 I ] displaystyle beginbmatrixA&BC&Dendbmatrix^-1beginbmatrixI&A^-1B0&Iendbmatrix^-1beginbmatrixA&00&D-CA^-1Bendbmatrix^-1beginbmatrixI&0CA^-1&Iendbmatrix^-1beginbmatrixI&-A^-1B0&IendbmatrixbeginbmatrixA&00&D-CA^-1Bendbmatrix^-1beginbmatrixI&0-CA^-1&Iendbmatrix

An equivalent UDL decomposition exists if D textstyle D is non-singular: [ A B C D ] [ I B D 1 0 I ] [ A B D 1 C 0 0 D ] [ I 0 D 1 C I ] displaystyle beginbmatrixA&BC&DendbmatrixbeginbmatrixI&BD^-10&IendbmatrixbeginbmatrixA-BD^-1C&00&DendbmatrixbeginbmatrixI&0D^-1C&Iendbmatrix

This may be useful for inversion if A B D 1 C textstyle A-BD^-1C is non-singular: [ A B C D ] 1 [ I 0 D 1 C I ] 1 [ A B D 1 C 0 0 D ] 1 [ I B D 1 0 I ] 1 [ I 0 D 1 C I ] [ A B D 1 C 0 0 D ] 1 [ I B D 1 0 I ] displaystyle beginbmatrixA&BC&Dendbmatrix^-1beginbmatrixI&0D^-1C&Iendbmatrix^-1beginbmatrixA-BD^-1C&00&Dendbmatrix^-1beginbmatrixI&BD^-10&Iendbmatrix^-1beginbmatrixI&0-D^-1C&IendbmatrixbeginbmatrixA-BD^-1C&00&Dendbmatrix^-1beginbmatrixI&-BD^-10&Iendbmatrix

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1. Stadion Beroe of q&a testerStadion Beroe (Bulgarian: e, English: 'Beroe Stadium') (also nicknamed The Temple) is a multi-purpose stadium in Stara Zagora, Bulgaria. It is located in the north-western part of the city, near the park Ayazmoto. Currently, the venue is used for football matches and athletic competitions and is also the home ground of the local football club PFC Beroe Stara Zagora. The stadium has a seating capacity of 12,128 spectators and it was officially inaugurated on April 4, 1959.The stadium's athletic lane meets all of the IAAF requirements to host international competitions.In October 2011, a new floodlight system and a new scoreboard were installed.The record attendance of the stadium is 42,000 and it was achieved in an A Group match between Beroe and Levski Sofia in 1972.------2. 2011 World Championships in Athletics Men's triple jump of q&a testerThe Men's triple jump event at the 2011 World Championships in Athletics was held at the Daegu Stadium on September 2 and 4.Seven made the automatic qualifying mark. The eventual winner was not one of them, barely qualifying with the 9th best mark.Favorite Phillips Idowu led through the first three rounds as Will Claye failed to make a legal jump through the first two rounds, waited until his third jump to jump 17.50, to not only qualify for his final three jumps but to move into second place. In the fourth round, unheralded American collegian Christian Taylor popped 17.96, the number ten all time jump to blast into the lead. Idowu jumped 17.77 in his fourth attempt but was unable to improve upon that.------3. Kickers in Texas hold 'em of q&a testerKickers take on special importance in Texas hold 'em, because a common winning hand is one card in a player's hand matched with a card on the board, while the player's second card acts as a kicker. For example, if one player holds A-8, a second player holds A-7, and the board isA-K-6-5-4, the player with the A-8 will outkick the player with the A-7, since A-8's best hand is A-A-K-8-6, while the A-7's hand is A-A-K-7-6.However, if the board held A-K-Q-J-3, the players would tie, because both would play the hand A-A-K-Q-J; in this case it is said that the players' kickers "don't play", or that the "kicker on the board plays". In this case, there would be a split pot.------4. Surviving episodes of q&a tester34 of the 38 "Q" episodes still exist. Through the mid-1970s, the BBC had a policy of wiping master copies of previously aired shows in order to reuse the videotape, or disposing of master videotapes altogether in order to reduce storage costs. This affected series Q5, as four of the seven episodes are now lost, and another two exist as black-and-white telerecordings only. However, all of Q6 exists, as does all of Q7, Q8, Q9 and There's A Lot of It About.Only three episodes of Q5 still exist. Episodes 2 and 3 both survive as 16mm black and white tele-recordings. Episode 4 exists in colour in its original form, and a few short clips from this colour episode appeared on the documentary Heroes of Comedy: Spike Milligan, and again on BBC4's "Assorted Q" in December 2014.------5. Clubs of q&a testerA total of 65 clubs have played in the Egyptian Premier League from its inception in 194849 up to and including the 201314 season. But only two clubs have been members of the Egyptian Premier League for every season since its inception. They are Al Ahly and Zamalek.The league consists of 2 groups each of 11 clubs. Al Ahly tops the first group, and Zamalek tops the second. The first two teams of each group will advance to the competition playoff, while the ninth team of each group will advance to the relegation play-off. The last two teams of each group will be relegated directly to the Egyptian Second Division.The following 22 clubs are competing in the Egyptian Premier League during the 201314 season.------6. Background of q&a testerThe band released the album at the time of the launch of the Criminal Justice Act, the legislation that gave British Police greater legal powers to break up unlicensed raves that gave Orbital its name. The Are We Here? single featured the track "Are We Here? (Criminal Justice Bill?)", four minutes of complete silence."Philosophy By Numbers" samples Sidney Stratton chemistry experiment from the film The Man in the White Suit."Are We Here?" samples a part of "Man at C&A" by The Specials. Track's vocals by Alison Goldfrapp, as on "Sad But True". "Are We Here?" is also on Work 1989-2002.The album was included in Q magazine's "The 25 Best Dance Albums Ever" in October 1997. It also made Q's end-of-year top 10 best albums list in 1994.------7. Kicker (poker) of q&a testerA kicker, also called a side card, is a card in a poker hand that does not itself take part in determining the rank of the hand, but that may be used to break ties between hands of the same rank. For example, the hand Q-Q-10-5-2 is ranked as a pair of queens. The 10, 5, and 2 are kickers. This hand would defeat any hand with no pair, or with a lower-ranking pair, and lose to any higher-ranking hand. But the kickers can be used to break ties between other hands that also have a pair of queens. For example, Q-Q-K-3-2 would win (because its K kicker outranks the 10), but Q-Q-10-4-3 would lose (because its 4 is outranked by the 5)------8. Fake track list of q&a testerAlthough the album has never surfaced, a fake version has been passed around the internet containing the only officially released "Q-Chastic" song, "CAT 002". which appeared on the compilation The Philosophy of Sound and Machine. Although the song name represents the catalog number for the 2X12", Grant Wilson-Claridge has stated the song "CAT 002" was not pressed to the album.On Sept 17, 2008, a Discogs user posted a review where he claimed that the most popular P2P version of the Q-Chastic EP came from a drum and bass compilation.A1 is "Translucogene" by John BB1 is "Thoughts" by The RiddlerC1 is the officially released Q-Chastic song "CAT 002" from The Philosophy of Sound and MachineC2 is "The Chimes" by The SDR------9. Graph-theoretic properties of q&a testerJ q ( n , k ) displaystyle J_q(n,k) is isomorphic to J q ( n , n k ) displaystyle J_q(n,n-k).For all 0 d diam ( J q ( n , k ) ) displaystyle 0leq dleq operatorname diam (J_q(n,k)), the intersection of any pair of vertices at distance d displaystyle d is ( k d ) displaystyle (k-d)-dimensional. ( J q ( n , k ) ) 1 max min , displaystyle omega left(J_q(n,k)right)1-frac lambda _max lambda _min , which is to say that the clique number of J q ( n , k ) displaystyle J_q(n,k) is given by an expression in terms its least and greatest eigenvalues min displaystyle lambda _minand max displaystyle lambda _max.------10. Queli of q&a testerQ'ueli (Georgian: ) or Q'uelis-tsikhe (, "fortress of Q'ueli") was a medieval Georgian fortress atop the homonymous mountain of the Arsiani Range (Yalnzam Dalar), now within the boundaries of Turkey, where it is known as Kol Kalesi or Kuvel Kalesi. Its Georgian name is alternatively transliterated as Qveli, Kveli, K'veli, Qvelis-ts'ikhe or Qvelis-c'ixe. First appearing in the early 10th-century Georgian sources, Q'ueli was one of the principal fortifications of the province of Samtskhe until being conquered by the Ottoman Empire in the 16th century.The name Q'ueli/Q'uelis-tsikhe literally translates from Georgian as "a cheese fortress", which was a source of the Greek equivalent Tyrokastron ()the name by which the fortress is mentioned in Constantine VII Porphyrogennetos's De Administrando Imperio.------11. Devriye of q&a testerDevir (Turkish) Dawr (arabic). Is a concept in Alevism translated as cycle. It is the cycle to perfection (al-Insn al-Kmil). It is described by many alevi saints and poets as Devriye. This concept goes together with Tenasuh (turkish) Tanasukh (arabic) meaning reincarnation and Tekml (Turkish) takmul (Arabic) meaning spiritual evolution. It is often described with concepts as Wahdat al-Wujud and Wahdat al-mawjud. There are two sides to creation, one from a spiritual centre to plurality, another from plurality to the spiritual centre. When somebody dies in the Alevi community the dede en people from the community say: devri daim olsun (turkish) meaning may his/her cycle be complete------12. Awards of q&a testerThe film was historically most noted for setting off a crisis in the Canadian Film Awards, when Lefebvre threatened to withdraw the film from the competition if the Ontario Censor Board did not withdraw its demand for the film's explicit sexuality to be edited. Several other filmmakers were also prepared to withdraw in solidarity, although provincial cabinet minister James Auld intervened to dissuade the board from insisting on the cuts. The film screening went ahead, but film directors from Quebec continued to perceive a systemic bias against them; in 1973, a number of Quebec filmmakers entirely boycotted the awards. This later protest resulted in the last-minute cancellation of the 1973 awards ceremony, with the winners announced only at a press conference, and the complete cancellation of the 1974 awards------13. Householder operator of q&a testerIn linear algebra, the Householder operator is defined as follows. Let V displaystyle V, be a finite dimensional inner product space with inner product , displaystyle langle cdot ,cdot rangle and unit vector u V displaystyle uin V. Then H u : V V displaystyle H_u:Vto V,is defined by H u ( x ) x 2 x , u u displaystyle H_u(x)x-2,langle x,urangle ,u,This operator reflects the vector x displaystyle x across a plane given by the normal vector u displaystyle u.It is also common to choose a non-unit vector q V displaystyle qin V, and normalize it directly in the Householder operator's expression H q ( x ) x 2 x , q q , q q displaystyle H_qleft(xright)x-2,frac langle x,qrangle langle q,qrangle ,q,------14. Viola Sonata (Mendelssohn) of q&a testerFelix Mendelssohn composed his Viola Sonata in C minor, MWV Q 14, when he was only 15 years old. The autograph score is dated 14 February 1824. The work was not published in Mendelssohn's lifetime - in fact not until 1966 - and it was not assigned an opus number. Although he did reuse one of the themes from the minuet movement in the equivalent movement of his First Symphony.Mendelssohn himself was an accomplished violinist and violist, playing one of the viola parts in an early performance of his own String Octet in E flat major, and was fully aware of the difficulties of writing for the viola. Since the sonata was not published for over 140 years, the first sonata specifically for the modern viola to be published may have been by Karl Ernst Naumann, who was born in 1832, after this sonata was written.------15. German loanwords of q&a testerThe German loanwords used in Inuttitut date from the period of the German missionaries of Moravian Church (1760s).ailvat (
Introduction to Q&a Tester
Introduction to Q&a Tester
1. Notable Articles of q&a testerDavid Shelledy, Autonomy, Debate, and Corporate Speech, 18 HASTINGS CONST. L.Q. 541 (1991). Cited in the dissent authored by U.S. Supreme Court Justice Stevens, joined by Justices Ginsburg, Breyer, and Sotomayor in Citizens United v. FEC, 558 U.S. 310 (2010).Julie M. Spanbauer, The First Amendment Right to Petition Government for a Redress of Grievances: Cut from a Different Cloth, 21 HASTINGS CONST. L.Q. 15 (1993). Cited by the American Civil Liberties Union and American Association for Justice in Amici Curiae briefs.Joseph R. Grodin, Rediscovering the State Constitutional Right to Happiness and Safety, 25 HASTINGS CONST. L.Q. 1 (1997). Cited by the Supreme Courts of California, Iowa and New Mexico.Neal Kumar Katyal, The Promise and Precondition of Educational Autonomy, 31 HASTINGS CONST. L.Q. 1 (1997). Cited by Howard University School of Law Civil Rights Clinic as Amicus Curiae.Jamila Jefferson-Jones, Airbnb and the Housing Segment of the Modern 'Sharing Economy': Are Short-Term Rental Restrictions an Unconstitutional Taking? 42 HASTINGS CONST. L.Q. 557 (2015). Cited by the Supreme Court of New York.------2. RogersSzeg polynomials of q&a testerIn mathematics, the RogersSzeg polynomials are a family of polynomials orthogonal on the unit circle introduced by Szeg(1926), who was inspired by the continuous q-Hermite polynomials studied by Leonard James Rogers. They are given by h n ( x ; q ) k 0 n ( q ; q ) n ( q ; q ) k ( q ; q ) n k x k displaystyle h_n(x;q)sum _k0^nfrac (q;q)_n(q;q)_k(q;q)_n-kx^kwhere (q;q)n is the descending q-Pochhammer symbol.Furthermore, the h n ( x ; q ) displaystyle h_n(x;q) satisfy (for n 1 displaystyle ngeq 1) the recurrence relation h n 1 ( x ; q ) ( 1 x ) h n ( x ; q ) x ( q n 1 ) h n 1 ( x ; q ) displaystyle h_n1(x;q)(1x)h_n(x;q)x(q^n-1)h_n-1(x;q)with h 0 ( x ; q ) 1 displaystyle h_0(x;q)1 and h 1 ( x ; q ) 1 x displaystyle h_1(x;q)1x.------3. Formal definition of q&a testerGiven a labelled state transition system (S, , ), a simulation relation is a binary relation R over S (i.e. R S S) such that for every pair of elements (p,q) R, for all , and for all p' S, p p displaystyle poverset alpha rightarrow p'implies that there is a q' S such that q q displaystyle qoverset alpha rightarrow q'and (p',q') R.Equivalently, in terms of relational composition: R 1 ; ; R 1 displaystyle R^-1,;overset alpha rightarrow quad subseteq quad overset alpha rightarrow ,;R^-1Given two states p and q in S, q simulates p, written p q if there is a simulation R such that (p, q) R. The relation is a preorder, and is usually called the simulation preorder. It is the largest simulation relation over a given transition system.Two states p and q are said to be similar, written p q, if p simulates q and q simulates p. Similarity is an equivalence relation, but it is coarser than bisimilarity.------4. Inuttitut of q&a testerInuttitut, or Inuttut is a Canadian dialect of Inuktitut. It is spoken across northern Labrador by Inuit people, whose traditional lands are known as Nunatsiavut.The language has a distinct writing system, created by German missionaries from the Moravian Church in Greenland in the 1760s. This separate writing tradition, the remoteness of Nunatsiavut from other Inuit communities, and its unique history of cultural contacts have made it into a distinct dialect with a separate literary tradition.It shares features, including Schneider's Law, the reduction of alternate sequences of consonant clusters by simplification, with some Inuit dialects spoken in Quebec. It is differentiated by the tendency to neutralize velars and uvulars, i.e. // /r/, and /k/ /q/ in word final and pre-consonantal positions, as well as by the assimilation of consonants in clusters, compared to other dialects. Morphological systems (juk/vuk) and syntactic patterns (e.g. the ergative) have similarly diverged. Nor are the Labrador dialects uniform: there are separate variants traceable to a number of regions, e.g. Rigolet, Nain, Hebron, etc.Although Nunatsiavut claims over 4,000 inhabitants of Inuit descent, only 550 reported any Inuit language to be their mother tongue in the 2001 census, mostly in the town of Nain. Inuttitut is seriously endangered.------5. Summary of q&a testerThe semi-finals were dominated by world leader Christian Coleman, who was allowed to compete despite missing three doping tests in the year due to a technicality, and blasted a 9.88 while no other qualifiers broke 10. The last time qualifier, Filippo Tortu, made the final by .001, running 10.101 over Tyquendo Tracey's 10.102, while Aaron Brown got in by placing second behind Coleman in heat 1 with 10.12.In the final, defending champion Justin Gatlin got a good start to gain a step on the field, except Coleman got a better start, gaining that step on Gatlin. Unlike 2017, Coleman did not give ground back, extending his lead to a dominating victory in 9.76. A new personal best, world leading time for the season, that becomes the #6 time in history, just 2 ticks behind Gatlin's best. Returning to form, Andre De Grasse closed and nearly caught Gatlin at the line in 9.90, a new wind legal personal best, though he has run as fast as 9.69 wind aided.At 37 years old, the world M35 record holder over 100m Justin Gatlin became the oldest athlete to ever medal in 100m in the World Championships history.------6. Q... of q&a testerQ... is a surreal television comedy sketch show written by Spike Milligan and Neil Shand, and starring Spike Milligan with a number of supporting players, usually including Julia Breck, John Bluthal, Bob Todd, and John Wells. The show ran from 1969 to 1982 on BBC2. There were six series in all, the first five numbered from Q5 to Q9, and a final series titled There's a Lot of It About. The first and third series ran for seven episodes, and the others for six episodes, each of which was 30 minutes long.Various reasons have been suggested for the title. One possibility is that it was inspired by the project to construct the Cunard liner QE2, launched in September 1967, which was previously codenamed Q4. Another theory is that Milligan was inspired by the BBC 6-point technical quality scale of the time, where "Q5" was severe degradation to picture or sound, and "Q6" was complete loss of sound or vision. This was extended by some engineering departments to a 9-point scale, finishing at "Q9". According to Milligan's autobiography, the final series was renamed There's a Lot of It About after the BBC felt the public might find Q10 too confusing.------7. Examples of q&a testerLet p be a prime, and denote the field of p-adic numbers, as usual, by Q p displaystyle mathbf Q _p. Then the Galois group Gal ( Q p / Q p ) displaystyle textGal(overline mathbf Q _p/mathbf Q _p), where Q p displaystyle overline mathbf Q _p denotes the algebraic closure of Q p displaystyle mathbf Q _p, is prosolvable. This follows from the fact that, for any finite Galois extension L displaystyle L of Q p displaystyle mathbf Q _p, the Galois group Gal ( L / Q p ) displaystyle textGal(L/mathbf Q _p) can be written as semidirect product Gal ( L / Q p ) ( R Q ) P displaystyle textGal(L/mathbf Q _p)(Rrtimes Q)rtimes P, with P displaystyle P cyclic of order f displaystyle f for some f N displaystyle fin mathbf N, Q displaystyle Q cyclic of order dividing p f 1 displaystyle p^f-1, and R displaystyle R of p displaystyle p-power order. Therefore, Gal ( L / Q p ) displaystyle textGal(L/mathbf Q _p) is solvable.------8. Quaternionic structure of q&a testerIn mathematics, a quaternionic structure or Q-structure is an axiomatic system that abstracts the concept of a quaternion algebra over a field.A quaternionic structure is a triple (G, Q, q) where G is an elementary abelian group of exponent 2 with a distinguished element 1, Q is a pointed set with distinguished element 1, and q is a symmetric surjection GG Q satisfying axioms 1. q ( a , ( 1 ) a ) 1 , 2. q ( a , b ) q ( a , c ) q ( a , b c ) 1 , 3. q ( a , b ) q ( c , d ) x q ( a , b ) q ( a , x ) , q ( c , d ) q ( c , x ) . displaystyle beginalignedtext1.quad &q(a,(-1)a)1,text2.quad &q(a,b)q(a,c)Leftrightarrow q(a,bc)1,text3.quad &q(a,b)q(c,d)Rightarrow exists xmid q(a,b)q(a,x),q(c,d)q(c,x)endaligned.Every field F gives rise to a Q-structure by taking G to be F/F2, Q the set of Brauer classes of quaternion algebras in the Brauer group of F with the split quaternion algebra as distinguished element and q(a,b) the quaternion algebra (a,b)F.------9. Podcast Playlist of q&a testerPodcast Playlist is a Canadian radio program, which airs weekly on CBC Radio One. Co-hosted by Matt Galloway and the show's producer Lindsay Michael, the program is a documentary series which explores a particular theme in each episode through curated excerpts from online podcasts.The program debuted in May 2015 as a short-run summer series, and was subsequently extended as part of Radio One's permanent regular season schedule in September. The program was originally cohosted by Michael and Sean Rameswaram, a Canadian radio producer and podcaster currently based in New York City, where he is a producer for Studio 360 and the host of its spinoff podcast Sideshow. Rameswaram was previously heard on CBC Radio as a guest host of Q in early 2015, and was one of the five finalists for the permanent new host of the program before Shad's selection was announced in March.Rameswaram left the show in November 2015, and was succeeded by Galloway. After Galloway was named host of The Current while Michael was concurrently on maternity leave, the show was hosted for several weeks by Nana aba Duncan, until Elamin Abdelmahmoud joined Michael as the new host in September 2020.------10. Quality issues of q&a testerJust a few months after the launch, users began to complain that the drives had serious quality issues, causing them to break. The damage to its public image and warranty obligations of SyQuest were major factors behind the company's bankruptcy.After its bankruptcy, SyQuest kept its rights to make and sell the drive, which it continued to sell directly to consumers via its website. The price increased compared to when the drive was launched, so it was primarily for businesses that still relied on the drive and people who wanted to read old SparQ disks. By October 2008, the website was no longer active.The SparQ was noteworthy for a serious failure mode which damages SparQ disks in a way that caused them to damage subsequent SparQ drives in which they were placed. Simply putting a broken disk in a SparQ drive will cause the drive to break any new disks placed in that drive. These (broken) disks could break additional drives, breaking most of the drives in an office in short order.
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