text stringlengths 41 2.91k | source stringclasses 2 values |
|---|---|
as early as 1856 cremona had begun to contribute to the annali di scienze matematiche e fisiche, and to the annali di matematica, of which he became afterwards joint editor. papers by him appeared in the mathematical journals of italy, france, germany and england, and he published several important works, many of which have been translated into other languages. his manual graphical statics and his elements of projective geometry (translated by thomas hudson beare and c. leudesdorf respectively) were published in english by the clarendon press. | wikipedia |
fullerene itself stands out in the class of organic compounds because of its electronic properties. current research studies utilization of fullerene by bonding it onto an optimal polymeric substrate. practical reasons are easy processability of polymers and low price in comparison to pure c fullerene. | wikipedia |
another method to analyze the performance of the simplex algorithm studies the behavior of worst-case scenarios under small perturbation – are worst-case scenarios stable under a small change (in the sense of structural stability), or do they become tractable? this area of research, called smoothed analysis, was introduced specifically to study the simplex method. indeed, the running time of the simplex method on input with noise is polynomial in the number of variables and the magnitude of the perturbations. | wikipedia |
critical realism (cr) offers a framework that can be used to approach complex questions at the interface between educational theory and educational practice. nevertheless, cr is not a theory but a philosophical approach intended to under-labour for social science research. as a meta-theory, it does not explain any social phenomenon. instead, the processes and techniques of the discipline, in this case, education, will provide the means for translating cr principles into a substantive study. this means that for any study framed under a cr approach, there is a need to choose a social theory (that shares a realist ontology) that explains why things are the way they are rather than some other way. as in the different disciplines described above, in educational research under a cr approach, the overall aim is to explain the educational phenomena in terms of the hidden generative mechanisms that make the events we observe happen. rebecca eynon of the oxford internet institute believes that when investigating issues in the field of educational technology it is fundamental to address the real problems that as she argues, relate to the more profound and most of the time, imperceptible structural issues that constrain technology use. in the field of educational technology, particularly when exploring how technology is used or appropriated by teachers and students, an understanding of the social world as complex and multi-layered is helpful. clive lawson of the cambridge social ontology group has addressed the topic of technology from a cr perspective. the book isolation and technology (2017) sets out a persuasive 'ontology of technology' and applies this perspective to explain the causal powers of technology, which for educational purposes is highly relevant. his main argument is that technology has the power to enlarge human capabilities but only if the technology/artefact is enrolled in the network of interdependencies in a particular system. he suggests a conception of technical activity "as that activity that harnesses the causal capacities and powers of material artefacts in order to extend human capabilities" (p. 109). | wikipedia |
while failing to qualify for the scotties, jones and doubles partner brent laing made their debut at the 2017 canadian mixed doubles curling championship, the first championship for the pair. through the round robin, they finished first amongst their pool with a 6–1 record, qualifying directly for the quarterfinals. they then beat janet and hugh murphy before losing in the semifinals to rachel homan and john morris, earning the bronze medal. still, their performance was good enough to qualify them for the 2018 canadian mixed doubles curling olympic trials the following season. | wikipedia |
fsa aligns multiple sequences based on homology within columns instead of strictly a consideration of indels and substitutions. as such, fsa considers alignments to be equivalent if for every position along the sequences in both alignments, the same statement about homology can be made. for example, when considering pairwise comparisons, if there is a gap at a specific position in two alignments, then it can be said that the two sequences being compared are not homologous at said position. this can result in alignments where gap-open events can differ and yet still be considered equivalent. as such, fsa chooses to output the alignment in which there is a minimum amount of "gap openings". | wikipedia |
overman's ph.d. focused on the mechanism of rearrangements related to the biosynthesis of lanosterol from squalene oxide via lanosterol synthase. overman has explained that this work gave him a lifelong love of rearrangement reactions. this was followed by two years as a postdoctoral fellow at columbia university with ronald breslow, using non-covalent binding of cyclodextrin as a model of enzyme binding. | wikipedia |
"the reversible destiny lofts - mitaka (in memory of helen keller)" were completed in tokyo's western suburbs in 2005. similar to bioscleave, the lofts employed the philosophy of " procedural architecture " whereby the human body is kept in a continual state of physical interaction with their surrounding environment to prevent age-related decline. in terms of formal arrangement, each of the lofts are assembled together in cubical, spherical, and tubular shapes that each contain spatially disparate layouts for their respective residences. while bioscleave was more focused on residential functions, the mitaka lofts are regularly utilized in a multipurpose fashion: residences, educational facilities, and cultural centers. sections of the site are often leased for short and long-term usage, and it has even been a featured site on the popular vacation rental platform airbnb. | wikipedia |
mfa is complementary to the other core industrial ecology methods life cycle assessment (lca) and input-output (io) models. some overlaps between the different methods exist as they all share the system approach and to some extent the mass balance principle. the methods mainly differ in purpose, scope, and data requirements. | wikipedia |
this minor planet was named after kenos, the first man in the selknam mythology of the native americans of tierra del fuego, sent by the supreme being to bring order into the world. he created the human race by using peat to make male and female organs, taught them language and instructed them in rules to fashion a harmonious society. the official naming citation was published by the minor planet center on 6 february 1993 (m.p.c. 21606). | wikipedia |
following the 2013–14 season, streit was named an alternate captain for the flyers alongside wayne simmonds and captain claude giroux. as a result of a long term injury to kimmo timonen, streit stepped into a larger role on the flyers top power play unit. during the pre-season, streit led all defensemen in scoring and tied for second overall with eight points through four games. this continued into the regular season and streit entered the month of december leading all flyers defensemen in goals, assists, and points, and leading the entire team in time-on-ice per-game. by the end of december, streit led team defensemen with 23 points and ranked 10th amongst defensemen in the league. he also quickly became the flyers defensemen in five years to reach and pass the 50-point milestone. he finished his second season with the team recording nine goals and 43 assists for 52 points to tie for eight among lead defensemen in points. as a result of his productive season, streit received the barry ashbee trophy as the team's most outstanding defenseman and the yanick dupre memorial class guy award. | wikipedia |
the population total is denoted as y = ∑ i = 1 n y i {\displaystyle y=\sum _{i=1}^{n}y_{i}} and it may be estimated by the (unbiased) horvitz–thompson estimator, also called the π {\displaystyle \pi } -estimator. this estimator can be itself estimated using the pwr -estimator (i.e.: p {\displaystyle p} -expanded with replacement estimator, or "probability with replacement" estimator). with the above notation, it is: y ^ p w r = 1 n ∑ i = 1 n y i ′ p i = ∑ i = 1 n y i ′ n p i ≈ ∑ i = 1 n y i ′ π i = ∑ i = 1 n w i y i ′ {\displaystyle {\hat {y}}_{pwr}={\frac {1}{n}}\sum _{i=1}^{n}{\frac {y'_{i}}{p_{i}}}=\sum _{i=1}^{n}{\frac {y'_{i}}{np_{i}}}\approx \sum _{i=1}^{n}{\frac {y'_{i}}{\pi _{i}}}=\sum _{i=1}^{n}w_{i}y'_{i}}. | wikipedia |
lai received a b.sc. in electrical engineering in 1982 and an m.sc. in mathematics in 1984 at xidian university (then known as northwest institute of telecommunication engineering). about 1982 he met james massey, who was visiting the university to give lectures in cryptography. lai served as interpreter for these lectures. he later became one of massey's doctoral students at eth zurich, where he received his ph.d. in 1992. together they designed the idea cipher. | wikipedia |
charles roach smith (20 august 1807 – 2 august 1890), fsa, was an english antiquarian and amateur archaeologist who was elected a fellow of the society of antiquaries of london, and the london numismatic society. he was a founding member of the british archaeological association. roach smith pioneered the statistical study of roman coin hoards. | wikipedia |
in mathematics, the term cartan matrix has three meanings. all of these are named after the french mathematician Élie cartan. amusingly, the cartan matrices in the context of lie algebras were first investigated by wilhelm killing, whereas the killing form is due to cartan. | wikipedia |
mayers and yao proposed the idea of designing quantum protocols using "self-testing" quantum apparatus, the internal operations of which can be uniquely determined by their input-output statistics. subsequently, roger colbeck in his thesis proposed the use of bell tests for checking the honesty of the devices. since then, several problems have been shown to admit unconditional secure and device-independent protocols, even when the actual devices performing the bell test are substantially "noisy," i.e., far from being ideal. these problems include quantum key distribution, randomness expansion, and randomness amplification. | wikipedia |
from the point of view of differential geometry, the coffee cup and the donut are different because it is impossible to rotate the coffee cup in such a way that its configuration matches that of the donut. this is also a global way of thinking about the problem. but an important distinction is that the geometer does not need the entire object to decide this. by looking, for instance, at just a tiny piece of the handle, they can decide that the coffee cup is different from the donut because the handle is thinner (or more curved) than any piece of the donut. | wikipedia |
he created, developed and directed (1995-2014) njit’s center for solar-terrestrial research (cstr), which made njit one of the most important universities in the u.s. for observational solar physics, heliophysics, and solar-terrestrial physics | wikipedia |
stan veit was the owner of the computer mart in new york city. he placed a color television in his store window displaying the colorful, ever-changing kaleidoscopic patterns generated by the dazzler and wang's software. according to veit: “people driving by began to stop and look – they had never seen anything like it before. in a short time the dazzler had caused a traffic jam on 5th avenue!” the police had to contact the building landlord and make him disconnect the television. | wikipedia |
shevlin originally played oztag, a variant of rugby league, representing australia in the sport. she took up football in 2016 after encouragement from her teacher. shevlin began playing as a wing for the gungahlin jets in the afl canberra, but missed ten weeks of her first season after she dislocated her thumb in her first match. | wikipedia |
with help of trigonometric formulae and the subsequent division by sin 1 2 θ {\textstyle \sin {\frac {1}{2}}\theta } the equation of the secant line can be rewritten by: cos (3 2 θ) ⋅ x + sin (3 2 θ) ⋅ y = 4 (cos 1 2 θ) 3 0 < θ < 2 π. {\displaystyle \cos \left({\tfrac {3}{2}}\theta \right)\cdot x+\sin \left({\tfrac {3}{2}}\theta \right)\cdot y=4\left(\cos {\tfrac {1}{2}}\theta \right)^{3}\quad 0<\theta <2\pi.} | wikipedia |
due to standards for sexual content as set by the association for uk interactive entertainment and the video standards council, the cdtv version of cover girl strip poker was labelled with a bbfc 18 certificate; french gaming magazine joystick speculated that on-line entertainment, the publisher of the european cdtv version, was intentionally seeking a mature rating for the game for the sake of publicitity. the cdtv release of cover girl strip poker is compatible with the amiga cd32. | wikipedia |
a steep landform is going to see an increased amount of runoff when compared to a flat landform. increased runoff can inhibit soil formation as the upper layers continue to get stripped off because they are not developed enough to support root growth. root growth can help prevent erosion as the roots act to keep the soil in place. this phenomenon leads to soils on slopes being thinner and less developed than soils found on plains or plateaus. | wikipedia |
the 2020–21 aberdeen f.c. season was aberdeen's 108th season in the top flight of scottish football and the eighth in the scottish premiership. aberdeen also competed in the scottish cup, the league cup and in qualifying for the europa league. | wikipedia |
successful, even though he won six combined races and finished runner-up yet again to marquez. dovizioso left ducati after the 2020 season due to a breakdown in relations with the team. dovizioso finished within the top five in 10 of his first 13 motogp seasons and is considered one of the best motogp riders to not win the motogp world championship. he is the only rider in history to win a motogp race in three different decades – 2000s, 2010s and 2020s. he is nicknamed 'the professor' due to his calculated riding approach. | wikipedia |
since 2009 corbett has worked as an epidemiologist at the london school of hygiene & tropical medicine and part of the malawi liverpool wellcome trust program based in blantyre. she was promoted to professor in 2012 and led the world's first large evaluation of hiv self-testing. she has since lobbied unitaid and population services international to provide self-testing in six african countries, raising over $72 million to support research and community-level implementation. the hiv self-testing kits have since been taken up by 59 countries, and over 6 million were used in 2018. alongside hivself-testing, corbett is interested in tuberculosis management in hiv prevalent populations. she has investigated whether sputum microscopy or x-ray based diagnostics could be used to diagnose cases of tuberculosis in communities impacted by high rates of tuberculosis and hiv, as well as whether hiv self-testing should be offered to people who have tuberculosis-like symptoms. she has investigated the epidemic of long-term survivors of perinatal hiv transmission. alongside her scientific research, corbett has designed research training and taught students at the malawi college of medicine. | wikipedia |
cooper became a free agent for the first time in his career after the conclusion of the 2016. he drew interest and spoke to the pittsburgh steelers, new york jets, and chicago bears. arizona cardinals' head coach bruce arians expressed interest into resigning him but stated that, "the price looks like its going pretty high for him, so we'll wait and see." | wikipedia |
potassium trichloridocuprate(ii) is a salt with chemical formula kcucl3, more properly [k+]2[cu2cl2−6]. it is a member of the "halide" sub-family of perovskite materials with general formula abx3 where a is a monovalent cation, b is a divalent cation, and x is a halide anion. the compound occurs in nature as the bright red mineral sanguite. the compound is also called potassium trichlorocuprate(ii), potassium copper(ii) trichloride, potassium cupric chloride and other similar names. the latter is used also for potassium tetrachloridocuprate(ii) k2cucl4. | wikipedia |
x3d is specifically designed to work across diverse devices by using the web architecture. x3d provides a range of 3d functionality through profiles, from basic asset interchange and cadinterchange to interactive, mpeg-4 interactive, medical, immersive, and full profiles. anatomically thorough support is also available for humanoid animation (hanim) body structure and motion. the ‘x’ in x3d means extensible: custom vendor and research component extensions can be added to standard functionality. | wikipedia |
with contact to water or moisture, polysilazanes decompose more or less quickly. water molecules attack the silicon atom and the si–n bond is cleaved. the r si−nh−sir forms r si−nh and ho−sir which can further react (condensation) to form r si−o−sir (siloxanes). the rate of the reaction with water (or other oh containing materials like alcohols) depends on the molecular structure of the polysilazanes and the substituents. perhydropolysilazane will decompose very quickly and exothermically with contact to water while polysilazanes with large substituents react very slowly. | wikipedia |
with the score tied, 3–3, in the seventh inning of game seven, schiraldi gave up a leadoff home run to knight, the series mvp. he gave up two more earned runs in just 1 ⁄ 3 of an inning to take the loss in the series clincher. his era for the world series was 13.50. | wikipedia |
wallace lloyd wilson was a canadian professional ice hockey player who played 53 games in the national hockey league with the boston bruins during the 1947–48 season. the rest of his career, which lasted from 1941 to 1948, was spent in the minor leagues. | wikipedia |
percentiles are a type of quantiles, obtained adopting a subdivision into 100 groups.the 25th percentile is also known as the first quartile (q), the 50th percentile as the median or second quartile (q), and the 75th percentile as the third quartile (q).for example, the 50th percentile (median) is the score below (or at or below, depending on the definition) which 50% of the scores in the distribution are found. | wikipedia |
with the four south african super rugby teams - the bulls, the lions, the sharks and the stormers - joining the league ahead of the 2021–22 season, the pro14 was rebranded and restructured as the united rugby championship. the teams were divided into regional pools, with munster joining their provincial rivals connacht, leinster and ulster in the irish pool. the regular season took place over 18 rounds; munster played their pool opponents home and away, and played home or away fixtures against the other 12 teams in the league. all sixteen teams were ranked in one league table after the 18 rounds, with the top 8 teams qualifying for the quarter-finals, followed by semi-finals and a grand final. | wikipedia |
lazaros papadopoulos (greek: Λάζαρος Παπαδόπουλος; born 3 june 1980) is a greek former professional basketball player. he was listed at 7 ft (2.13 m) 265 lbs (120 kg), and he played the center position. during his playing career, he was best known for his signature skyhook move. | wikipedia |
this shows that, using terminology from universal algebra, the modular lattices form a subvariety of the variety of lattices. therefore, all homomorphic images, sublattices and direct products of modular lattices are again modular. | wikipedia |
recent development in ptt communications is the appearance of apps on smartphones, some of which can function on multiple platforms. wireless carrier-grade ptt systems have adapted to and adopted the smartphone platform by providing downloadable apps that support their ptt systems across many mobile platforms. over-the-top (ott) applications do not depend on a specific carrier or type of communication network, and may be slower than carrier implementations. | wikipedia |
in 1869 he was made senior national building director (oberlandesbaudirektor). this role involved responsibility for large water and harbor works in prussia and other german states. he held this post until his retirement in 1875. | wikipedia |
zhuge zhan then ordered his vanguard force to attack deng ai at fu county but they lost the battle. zhuge zhan and his remaining troops then retreated to mianzhu, where he soon received a letter from deng ai asking him to surrender. a furious zhuge zhan executed the messenger who delivered the letter, and ordered his troops to assemble in formation outside mianzhu and prepare to engage the enemy in battle. | wikipedia |
lackner and skowron show that thiele's voting rules can be used to interpolate between regressive and degressive proportionality: pav is proportional; rules in which the slope of the score function is above that of pav satisfy regressive proportionality; and rules in which the slope of the score function is below that of pav satisfy degressive proportionality. moreover, if the satisfaction-score of the i -th approved candidate is (1/ p), for various values of p, we get the entire spectrum between cc and av. | wikipedia |
abdallah ali mohamed (born 11 april 1999) is a comoran professional footballer who plays as a right-back for swiss super league club stade lausanne ouchy and the comoros national team. | wikipedia |
the last drift chamber built for cleo was the inner drift chamber zd for the cleo-c upgrade. its six layer, all stereo layer design would provide longitudinal measurements of low-momentum tracks that would not reach stereo layers of the main drift chamber. with the exception of the larger stereo angle and smaller cell size, the zd design was very similar to the dr3 design. | wikipedia |
a pam250 is a commonly used scoring matrix for sequence comparison. only the lower half of the matrix needs to be computed, since by their construction, pam matrices are required to be symmetric. each of the 20 amino acid are shown down the top and side of the matrix, with 3 additional ambiguous amino acids. the amino acids are most commonly shown listed alphabetically, or listed in groups. these groups are the characteristics shared among the amino acids. | wikipedia |
termination holds because eventually the failure detector stops suspecting some non-faulty process p and eventually p becomes the coordinator. if the algorithm has not terminated before this occurs in some round r, then every non-faulty process in round r waits to receive p's preference and responds with ack(r). this allows p to collect enough acknowledgments to send decide(preference), causing every process to terminate. alternatively, it may be that some faulty coordinator sends decide only to a few processes; but if any of these processes are non-faulty, they broadcast the decision to all the remaining processes, causing them to decide and terminate. | wikipedia |
thoughtshuffler is an attempt to build a search engine utilizing design principles from conversation theory: in this approach, terms that are input into a search request yield search results relating to other terms that derive or help provide context to the meaning of the first in a way that mimics derivations of topics in an entailment structure. for example, given the input of a search term, a neighbourhood of corresponding terms that comprise the meaning of the first term may be suggested for the user to explore. in doing this, the search engine interface highlights snippets of webpages corresponding to a neighbourhood terms that help provide meaning to the first. | wikipedia |
komorowski was born in warsaw, poland. his parents were henryk and violetta komorowski. he went to limanowski high school in the Żoliborz quarter of warsaw. he studied physics at the physics department at the university of warsaw between 1972/73 and 1977/78 and graduated march 11, 1978 with a degree in biophysics. his m.sc. was written under professor david shugar and dealt with magnetic resonance. | wikipedia |
after a trial spell with inverness caledonian thistle, blake signed for hibernian during the summer of 2017. he was then loaned to edinburgh city in august 2017, but this deal was curtailed in january 2018 as blake had suffered a long-term injury. | wikipedia |
john russell grisdale is a retired professional ice hockey player who played 250 games as a defenceman in the national hockey league for the toronto maple leafs and vancouver canucks. he also spent several years playing in the minor central hockey league, and retired in 1979. grisdale graduated with a bachelor of science in mechanical engineering in 1971 from michigan technological university where he was a three-year letterman with the huskies men's hockey team. he had 11 goals and 41 assists for 52 points in 94 career games with the huskies. he was inducted into the michigan technological university athletics hall of fame in 1997. he was the commissioner of the bchl from 2003 to 2018, and resides in the city of coquitlam. | wikipedia |
as with all varieties, the category of semigroups with involution admits free objects. the construction of a free semigroup (or monoid) with involution is based on that of a free semigroup (and respectively that of a free monoid). moreover, the construction of a free group can easily be derived by refining the construction of a free monoid with involution. | wikipedia |
basalt fibers are classified into 3 types: basalt continuous fibers (bcf), used for the production of reinforcing materials and composite products, fabrics, and non-woven materials; basalt staple fibers, for the production of thermal insulation materials; and basalt superthin fibers (bstf), for the production of high quality heat- and sound-insulating and fireproof materials. | wikipedia |
rosakis is a member of both the national academy of sciences (nas), and the national academy of engineering (nae). as such, he is one of only seventy living americans to be elected to membership in both the nas and the nae branches of the us national academies. he has also been elected to the american academy of arts and sciences (aaa&s) as well as five more academies in europe and india: indian national academy of engineering (inae), academia europaea (ae), european academy of sciences and arts (academia scientiarum et artium europaea), academy of athens (national academy of greece), european academy of science (euas). | wikipedia |
some authorities have sought to fix the date of the foundation of this diocese (under its primitive name of britonia) earlier than the second half of the 6th century, but the later date seems the more probable when we consider that, at the second council of braga (572), mailoc, bishop of britonia, was ranked lowest because of the more recent origin of his see. it seems to have been founded by the suevian king, theodomir, converted to catholicism by st martin of dumio, and to have included in its jurisdiction the churches of the britones (a territory coinciding with that of mondoñedo) and some of those of the asturias. in the beginning it was a suffragan of lugo, until the goths placed lugo under the jurisdiction of braga. after mailoc no mention is found of the bishops of britonia for a long time, doubtless because the great distance from toledo made it impossible for them to assist at the councils. in 633 metopius, bishop of britonia, assisted at the fourth council of toledo, presided over by st isidore of seville. sonna, his successor, was one of the bishops who signed at the seventh council of toledo (646) and sent a representative to the eighth council of toledo (16 december 653). when britonia was invaded and destroyed by the saracens, the bishop and priests took refuge in asturias. in 899, during the reign of alfonso iii of asturias, theodesimus, bishop of britonia, assisted with other prelates at the consecration of the church of santiago de compostela. it may also be noted that, in the repartition of the parishes, the church of san pedro de nova was assigned as the residence of the bishops of britonia and orense, when they should come to assist at the councils of oviedo. by that time, however, the see of britonia had been translated to the town of mondumetum and the church of st. martin of dumio, or mondoñedo. the diocese has since been most generally known by this name, although the episcopal residence has again changed. after the time of st. martin it was transferred to villamayor de brea, from which it derived the name of villabriensis, and afterwards to ribadeo, but it was nevertheless known as mindoniense, | wikipedia |
for any two functions f, g {\textstyle f,g} for which the two-sided laplace transforms t { f }, t { g } {\textstyle {\mathcal {t}}\{f\},{\mathcal {t}}\{g\}} exist, if t { f } = t { g }, {\textstyle {\mathcal {t}}\{f\}={\mathcal {t}}\{g\},} i.e. t { f } (s) = t { g } (s) {\textstyle {\mathcal {t}}\{f\}(s)={\mathcal {t}}\{g\}(s)} for every value of s ∈ r, {\textstyle s\in \mathbb {r},} then f = g {\textstyle f=g} almost everywhere. | wikipedia |
routhier served until his resignation on november 21, 1972, he was succeeded by henri légaré, who had been bishop of labrador-schefferville. archbishop légaré served until his retirement on july 16, 1996. on the same day henri goudreault, who had also served as bishop of labrador city-schefferville, was appointed to succeed him. archbishop goudreault died suddenly of a heart attack on july 23, 1998. the archdiocese of grouard–mclennan remained vacant until the appointment of arthé guimond, who had served as archdiocesan administrator, on june 9, 2000. archbishop guimond retired on november 30, 2006, and gérard pettipas was appointed to succeed him on the same day. | wikipedia |
brundrett joined the royal naval volunteer reserve to participate in world war i. he was slated for duty on patrol boats but came down with mumps and was held in isolation. it was discovered that he was a wrangler and he was reassigned to the wireless experimental department at hms vernon, where he spent the rest of the war. demobilised in 1919, brundrett, joined the scientific staff of the royal naval signal school. in 1920 he married enid james; they had one child, a son they named james edward. | wikipedia |
it is also convenient to fix a notation for the coefficients of the initial lanczos vector v 1 {\displaystyle v_{1}} with respect to this eigenbasis; let d k = z k ∗ v 1 {\displaystyle d_{k}=z_{k}^{*}v_{1}} for all k = 1, …, n {\displaystyle k=1,\dotsc,n}, so that v 1 = ∑ k = 1 n d k z k {\displaystyle \textstyle v_{1}=\sum _{k=1}^{n}d_{k}z_{k}}. a starting vector v 1 {\displaystyle v_{1}} depleted of some eigencomponent will delay convergence to the corresponding eigenvalue, and even though this just comes out as a constant factor in the error bounds, depletion remains undesirable. one common technique for avoiding being consistently hit by it is to pick v 1 {\displaystyle v_{1}} by first drawing the elements randomly according to the same normal distribution with mean 0 {\displaystyle 0} and then rescale the vector to norm 1 {\displaystyle 1}. prior to the rescaling, this causes the coefficients d k {\displaystyle d_{k}} to also be independent normally distributed stochastic variables from the same normal distribution (since the change of coordinates is unitary), and after rescaling the vector (d 1, …, d n) {\displaystyle (d_{1},\dotsc,d_{n})} will have a uniform distribution on the unit sphere in c n {\displaystyle \mathbb {c} ^{n}}. this makes it possible to bound the probability that for example | d 1 | < ε {\displaystyle |d_{1}|<\varepsilon }. | wikipedia |
klier, a 6'2 guard/forward, played collegiately at notre dame after a standout high school career at washington high school in washington, indiana. he played for the fighting irish from 1942 to 1946. klier was named a consensus first-team all-american in 1944 as he notched notre dame's single-season scoring record (since broken). however, klier missed the 1944–45 season as he served in the united states navy during world war ii. klier returned and was again named a consensus first-team all-american in 1946. | wikipedia |
in the statistical physics of second order phase transitions, the physical system approaches an infrared fixed point that is independent of theinitial short distance dynamics that defines the material. this determines the properties of the phase transition at the critical temperature, or critical point. observables, such as critical exponents usually depend only upon dimension of space, and are independent of the atomic or molecular constituents. | wikipedia |
where r {\displaystyle r} is the continuously compounded risk free rate of return, and t is the time to maturity. the intuition behind this result is that given you want to own the asset at time t, there should be no difference in a perfect capital market between buying the asset today and holding it and buying the forward contract and taking delivery. thus, both approaches must cost the same in present value terms. for an arbitrage proof of why this is the case, see rational pricing below. | wikipedia |
the rachev ratio (or r-ratio) is a risk-return performance measure of an investment asset, portfolio, or strategy. it was devised by dr. svetlozar rachev and has been extensively studied in quantitative finance. unlike the reward-to-variability ratios, such as sharpe ratio and sortino ratio, the rachev ratio is a reward-to-risk ratio, which is designed to measure the right tail reward potential relative to the left tail risk in a non-gaussian setting. intuitively, it represents the potential for extreme positive returns compared to the risk of extreme losses (negative returns), at a rarity frequency q (quantile level) defined by the user. | wikipedia |
the convention surrounding p-nmr (and other nuclei) changed convention in 1975: "the dimensionless scale should be defined as positive in the high frequency (low field) direction." therefore, note that manuscripts published before 1976 will generally have the opposite sign. | wikipedia |
chen xingbi was a chinese electronics engineer and professor at the university of electronic science and technology of china. known for his invention of superjunction power semiconductor devices, he was elected an academician of the chinese academy of sciences and a life fellow of the institute of electrical and electronics engineers (ieee). he was inducted into ieee's ispsd hall of fame in 2019. | wikipedia |
leon james britton is an english footballer and coach who last played for swansea city. a midfielder, he spent most of his career with swansea city, having joined the club on a permanent transfer in 2003. britton went on to make 520 appearances for the club. he joined sheffield united in the summer of 2010, but transferred back to swansea in january 2011. britton instantly became a central figure in swansea's successful promotion campaign. he remains one of a handful of players to have represented any club in all four professional divisions of the english footballing pyramid, along with brett ormerod, and former swansea teammates alan tate and garry monk. he later played twice for llanelli town and signed for ammanford in february 2021. | wikipedia |
ricardo enrique bochini is an argentine former professional footballer who played as an attacking midfielder. he is nicknamed el bocha. he spent his nearly twenty-year professional career at club independiente, becoming one of the most emblematic players and the greatest idol in the history of the club. bochini was a childhood idol of argentine iconic footballer diego maradona. in addition to winning the 1986 fifa world cup with the argentina national team, bochini won a total of 13 titles with independiente – four primera división championships and nine international competitions. | wikipedia |
klemm studied molar volumes and coefficients of expansion of both fused and solid halides. he also examined indium, gallium, germanium, and rhenium, and rare earth elements, determining their heats of formation and studying their reactivity with ammonia. | wikipedia |
from 1930 to 1935, jeanes was employed as the head science teacher at athens college in athens, alabama. from 1936 to 1937, she held a position as chemistry instructor at the university of illinois. she received her phd in organic chemistry from university of illinois in 1938, after working with roger adams. | wikipedia |
feder (1994) describes an algorithm for efficiently listing all solutions to a given 2-satisfiability instance, and for solving several related problems. there also exist algorithms for finding two satisfying assignments that have the maximal hamming distance from each other. | wikipedia |
under his father's tutelage, mike developed into a polished youth player. he played boys' soccer at st. thomas aquinas-mercy high school where he was part of two missouri state championship teams in 1985 and 1988. his senior year, he was honored as part of the all-great midwest conference team and was the north mvp at the st. louis north-south high school senior all-star game. | wikipedia |
t helper cells, central to the immune system, interact with other leukocytes by releasing signals known as cytokines which activate and stimulate the proliferation of b cells and killer t cells. t helper cells also directly interact with macrophages, cells that engulf foreign matter and display antigens on its surface. t-helper cells that possess the appropriate receptors can bind to these antigens and proliferate resulting in t-helper cells that have the ability to identify the same antigens. | wikipedia |
nash returned to the checkers for the 2012–13 season after attending the hurricanes 2012 training camp. by january, nash matched a checkers franchise record with four points in one game and surpassed his previous career high for points in a season. as a result, nash was recalled to the nhl in march and recorded his first career nhl goal on march 2, 2013, against the florida panthers to give his team a 5–0 lead in the second period. he concluded his third season with the hurricanes organization by signing a two-year, two-way contract worth $550,000 on the nhl level. | wikipedia |
the boeing x-51 waverider also uses jp-7 fuel in its pratt & whitney sjy61 scramjet engine, with fuel capacity of some 270 pounds (120 kg). as with the sr-71, the x-51a design super-cools this fuel (cooled by extended subsonic flight in the stratosphere; prior to acceleration to supersonic speeds); then, when in supersonic flight, the fuel is heated by its circulation through heat exchangers which transfer to it the heat load of the interior spaces of the airframe. the fuel is then pumped through rotating mechanical parts of the engines and auxiliary mechanical equipment, providing both lubrication and cooling. finally, at a temperature of nearly 550 °f (290 °c), it is pumped into the fuel nozzles of the engines. | wikipedia |
kagato (神我人, kagato) is a fictional character in the anime tenchi muyō!, serving as the main villain of the original ovas. a second, alternate incarnation of the character was the antagonist of the initial tm! television series, tenchi universe. his name does suggests to be a sentence or a statement of sort, by the kanji 我人, possibly meaning "my people" or the name together roughly translating to "i am god person" | wikipedia |
as a result of the ongoing covid-19 pandemic the entire college ice hockey season was delayed. because the ncaa had previously announced that all winter sports athletes would retain whatever eligibility they possessed through at least the following year, none of quinnipiac's players would lose a season of play. however, the ncaa also approved a change in its transfer regulations that would allow players to transfer and play immediately rather than having to sit out a season, as the rules previously required. | wikipedia |
rommie e. amaro is a professor and endowed chair of chemistry and biochemistry and the director of the national biomedical computation resource at the university of california, san diego. her research focuses on development of computational methods in biophysics for applications to drug discovery. | wikipedia |
since 2007, raffl has been a fixture participant with the austrian national team, including at the 2015 iihf world championship. in the lead up to the 2015–16 season, raffl was granted leave by salzburg on 1 september 2015, to attend the preseason training camp of the nhl's winnipeg jets on a professional tryout contract. following the training camp, raffl signed a one-year, one-way contract with the jets and was assigned to the manitoba moose, the jets' american hockey league affiliate. | wikipedia |
coombes signed a two-year contract extension with munster in march 2021. he started for munster in their 16–6 defeat against leinster in the 2021 pro14 grand final on 27 march 2021, and was the standout performer for the province on an otherwise disappointing occasion. one week later, coombes scored two tries in munster's 40–33 home defeat against toulouse in the last 16 of the 2020–21 champions cup, in another strong individual performance for the province. | wikipedia |
the 1998 concacaf women's championship was the fourth staging of the concacaf women's championship, the international women's association football tournament for north america, central america and caribbean nations organized by concacaf. the final stage of the tournament took place at etobicoke and scarborough in toronto, ontario, canada. canada took the sole automatic qualifying place for the 1999 fifa women's world cup by finishing first. the runner-up, mexico, qualified after defeating argentina in a two-leg playoff in december 1998. | wikipedia |
southworth was born in little cooley, pennsylvania, graduated in 1914 with a physics degree from grove city college, and studied one year at columbia university. in june 1917 he joined the national bureau of standards, then in 1918 moved to yale university to teach in a signal corps school. he remained at yale to complete a doctorate in 1923 on the measurement of the dielectric constant of water at frequencies above 15 mhz. | wikipedia |
a dsp-based implementation of a realtime 3d sound localization approach with the use of an embedded dsp can reduce the computational complexity as shown in the figure, the implementation procedure of this realtime algorithm is divided into three phases, (i) frequency division, (ii) sound localization, and (iii) mixing. in the case of 3d sound localization for a monaural sound source, the audio input data are divided into two: left and right channels and the audio input data in time series are processed one after another. | wikipedia |
with p {\displaystyle p} positive entries, q {\displaystyle q} negative entries, p + q = d {\displaystyle p+q=d} and a, b = 0, 1,..., d − 1. set n = 2. the standard dirac matrices correspond to taking d = n = 4 and p, q = 1, 3 or 3, 1. | wikipedia |
pseudo-random numbers are frequently used in simulation of statistical events, a very simple example being the outcome of tossing a coin. more complicated situations are simulation of population genetics, or the behaviour of sub-atomic particles. such simulation methods, often called stochastic methods, have many applications in computer simulation of real-world processes. | wikipedia |
helen lois koch (august 26, 1895 – july 14, 1977) was an american developmental psychologist and a faculty member at the university of texas at austin and the university of chicago. koch developed nursery school teacher training programs during world war ii and she researched the differences between sets of fraternal twins, identical twins and non-twin siblings. | wikipedia |
a first attempt was made by the authorities to shut down memorial in 2014. if memorial was closed, commented roginsky at the time, then the organisation's many branches would have to re-register and thereafter restore contacts across the country. over the next two years five branches of memorial were designated " foreign agents ". on 4 october 2016 the label was applied to international memorial headed by roginsky. a year later on 18 december 2017 roginsky died in tel aviv, israel aged 71. | wikipedia |
studies of the fungus neurospora crassa have contributed substantially to understanding how genes work. n. crassa is a type of red bread mold of the phylum ascomycota. it is used as a model organism because it is easy to grow and has a haploid life cycle that makes genetic analysis simple since recessive traits will show up in the offspring. analysis of genetic recombination is facilitated by the ordered arrangement of the products of meiosis in ascospores. in its natural environment, n. crassa lives mainly in tropical and sub-tropical regions. it often can be found growing on dead plant matter after fires. | wikipedia |
geological engineering is a hybrid discipline that comprises elements of civil engineering, mining engineering, petroleum engineering, and earth sciences. geological engineers often become licensed as both engineers and geologists. there are thirteen geological-engineering (or geoengineering) programs in the united states that are accredited by the engineering accreditation commission (eac) of abet: (1) colorado school of mines, (2) michigan technological university, (3) missouri university of science and technology, (4) montana tech of the university of montana, (5) south dakota school of mines and technology, (6) university of alaska-fairbanks, (7) university of minnesota twin cities, (8) university of mississippi, (9) university of nevada, reno (10) university of north dakota, (11) university of texas at austin, (12) university of utah, and (13) university of wisconsin-madison. | wikipedia |
jimmie glenn Ölvestad (born february 16, 1980) is a swedish former professional ice hockey right wing. he was drafted in the third round, 88th overall, by the tampa bay lightning in the 1999 nhl entry draft. | wikipedia |
xboard /winboard is another gui that supports shogi and other chess variants including western chess and xiangqi. shogi support was added to winboard in 2007 by h.g. muller. winboard uses its own protocol (chess engine communication protocol) to communicate with engines, but can connect to usi engines through the uci2wb adapter. engines that can natively support winboard protocol are shokidoki, tjshogi, gnu shogi and bonanza. unlike shogidokoro, winboard is free/libre and open source, and also available for the x window system as xboard (for linux and mac systems). | wikipedia |
jean-luc lambourde (born 10 april 1980) is a french football manager and former player who manages guadeloupe division d'honneur club amical club. a centre-back or defensive midfielder, began his career playing for amateur club avion in 2002. after spending three seasons with the club, lambourde ventured to his native homeland joining amical club. in his second season with the club, he won the coupe de guadeloupe. lambourde is a former member of the guadeloupe national team. he is one of a few players in the team to have participated in all three of the team's appearances as the concacaf gold cup. | wikipedia |
when burford ended his college career he was the all-time ncaa leader in both goals (103) and points (196). his goal total stood for only one year while he was passed on the scoring list by john mayasich in 1954. burford's 40-goal season in 1950 is still tied for the fourth-best total in michigan history as of 2020 (despite many players playing in nearly twice the number of games). | wikipedia |
in neuroscience, repolarization refers to the change in membrane potential that returns it to a negative value just after the depolarization phase of an action potential which has changed the membrane potential to a positive value. the repolarization phase usually returns the membrane potential back to the resting membrane potential. the efflux of potassium (k+) ions results in the falling phase of an action potential. the ions pass through the selectivity filter of the k+ channel pore. repolarization typically results from the movement of positively charged k+ ions out of the cell. the repolarization phase of an action potential initially results in hyperpolarization, attainment of a membrane potential, termed the afterhyperpolarization, that is more negative than the resting potential. repolarization usually takes several milliseconds. repolarization is a stage of an action potential in which the cell experiences a decrease of voltage due to the efflux of potassium (k+) ions along its electrochemical gradient. this phase occurs after the cell reaches its highest voltage from depolarization. after repolarization, the cell hyperpolarizes as it reaches resting membrane potential (−70 mv in neuron). sodium (na+) and potassium ions inside and outside the cell are moved by a sodium potassium pump, ensuring that electrochemical equilibrium remains unreached to allow the cell to maintain a state of resting membrane potential. in the graph of an action potential, the hyper-polarization section looks like a downward dip that goes lower than the line of resting membrane potential. in this afterhyperpolarization (the downward dip), the cell sits at more negative potential than rest (about −80 mv) due to the slow inactivation of voltage gated k+ delayed rectifier channels, which are the primary k+ channels associated with repolarization. at these low voltages, all of the voltage gated k+ channels close, and the cell returns to resting potential within a few milliseconds. a cell which is experiencing repolarization is said to be in its absolute refractory period. other voltage gated k+ channels which contribute to repolarization include a-type channels and ca2+-activated k+ channels. protein transport molecules are responsible for na+ out of the cell and k+ into the cell to restore the original resting ion concentrations. | wikipedia |
in his work jungle memory, started in 2017, greiner seeks to archive endangered forests worldwide in a vast digital database by photographically documenting them, like on the island of vilm or the hambach forest in germany, the primeval bialowieza forest in poland, the red forest in chernobyl or the burnt down parts of the plumas national forest in california. | wikipedia |
the 2011 iihf women's world championship division v was an international ice hockey tournament organized by the international ice hockey federation. it was played in sofia, bulgaria, from 14 to 19 march 2011. division v represented the sixth tier of the iihf women's world championship. as the winner of this tournament, poland was promoted to division iv for the 2012 championships. additionally spain was elevated because of some nations' withdrawals. bulgaria, turkey and ireland resumed play in 2013 in division ii b qualification. | wikipedia |
the majority of cmr is performed on conventional superconducting mri systems at either 1.5t or 3t. imaging at 3t field strength offers greater signal to noise ratio which can be traded for improved temporal or spatial resolution – which is of greatest utility in first-pass perfusion studies. however, greater capital costs and effects of off-resonance artefact on image quality mean that many studies are routinely performed at 1.5t. imaging at 7t field strength is a growing area of research, but is not widely available. | wikipedia |
on 16 july 2005, baždarević took over tunisian side Étoile du sahel. he reached the 2005 caf champions league final with the club. baždarević was fired by etoile on 12 april 2006, after a 1–0 home defeat to usm monastir in their final league game which cost them the tunisian championship. | wikipedia |
hd 37124 b is an extrasolar planet approximately 103 light-years away in the constellation of taurus (the bull). the planet was discovered in 1999 orbiting the star hd 37124. based on its mass, it is most likely that this planet is a jovian planet (like jupiter). | wikipedia |
in the 2015–2016 victorian budget, the government provided $81.3 million to support the work of the royal commission into family violence. in addition to the direct family violence found insertion, a further $257 million was provided to child protection services and $48.1 to child first to improve early intervention. in 2016, following a royal commission into family violence, the victorian government committed $572m to tackle the problem. the premier daniel andrews pledged to "overhaul our broken support system from the bottom up", quoting the statistic that in 2015, 37 victorians had been murdered by a family member. | wikipedia |
the 2016 a lyga, also known as smscredit.lt a lyga for sponsoring purposes was the 27th season of the a lyga, the top-tier association football league of lithuania. the season began on 2 march and ended on 26 november 2016. Žalgiris vilnius were the defending champions. | wikipedia |
the 2008–09 season was kilmarnock's tenth consecutive season in the scottish premier league, having competed in it since its inauguration in 1998–99. kilmarnock also competed in the scottish cup and the league cup. | wikipedia |
the long-running british science fiction television series doctor who has since its beginnings in 1963 generated many hundreds of products related to the show, from toys and games to picture cards and postage stamps. this article is not an exhaustive list of merchandise but attempts to present a flavour of the type of material that has been produced. this entry mainly concentrates on "official" spin-offs, that is to say, material sanctioned by the british broadcasting corporation, which produces the series. | wikipedia |
donald shell acquired a b.s. in civil engineering from the michigan college of mining and technology which is now michigan technological university. this was a four-year degree which he acquired in three years with the highest gpa given in the college's history. a record which persisted for more than 30 years. after acquiring his degree he went into the army corps of engineers, and from there to the philippines to help repair damages during world war ii. when he returned after the war, he married alice mccullough and returned to michigan technological university, where he taught mathematics. in 1949 they moved to cincinnati, ohio, for don to work for general electric 's engines division, where he developed a convergence algorithm and wrote a program to perform performance cycle calculations for ge's first aircraft jet engines. he also attended the university of cincinnati, where in 1951 he acquired a m.s. in mathematics and, in 1959, acquired his ph.d. in mathematics. in july of that year he published the shellsort algorithm and "the share 709 system: a cooperative effort". in 1958, he and a. spitzbart had published "a chebycheff fitting criterion". | wikipedia |
End of preview. Expand
in Data Studio
README.md exists but content is empty.
- Downloads last month
- 5