John Gordon Skellam (1914-1979) was a statistician and ecologist, who discovered the Skellam distribution. Skellam was born in Staffordshire. He was educated at Hanley High School where he won several scholarships including free admission to New College in Oxford. He was one of the most respected members of the British Region of the Biometric Society. Skellam has provided a model that allows to take the dynamics of populations as a random variable at any time t. Its stochastic form is much more flexible than previous deterministic equations.
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- John Gordon Skellam (en)
- John Gordon Skellam (pl)
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| - John Gordon Skellam (1914-1979) was a statistician and ecologist, who discovered the Skellam distribution. Skellam was born in Staffordshire. He was educated at Hanley High School where he won several scholarships including free admission to New College in Oxford. He was one of the most respected members of the British Region of the Biometric Society. Skellam has provided a model that allows to take the dynamics of populations as a random variable at any time t. Its stochastic form is much more flexible than previous deterministic equations. (en)
- John Gordon Skellam (Staffordshire, 1914 – estate 1979) è stato uno statistico britannico. Frequentò la Hanley High School, dove vinse diversi premi scolastici, tra i quali l'ammissione gratuita al New College di Oxford. È stato uno dei più importanti membri britannici della International Biometric Society. Statistico e studioso degli ecosistemi, descrisse la distribuzione di Skellam. È stato il principale redattore della rivista Biometrics, l'organo ufficiale della International Biometric Society, un'associazione internazionale con sede a Londra. I due suoi principali articoli sono (it)
- John Gordon Skellam (ur. 1914 w hrabstwie Staffordshire w Wielkiej Brytanii, zm. 1979) – statystyk i ekolog, odkrywca rozkładu nazwanego jego nazwiskiem. Uczył się w Hanley High School gdzie zdobył szereg stypendiów w tym wolny wstęp na New College w Oxford. Był jednym z najbardziej szanowanych członków . Skellam dostarczył model, który pozwala wziąć dynamikę populacji jako zmienną losową w każdej chwili czasu t. Jego stochastyczna forma jest dużo bardziej elastyczna niż wcześniejsze równania deterministyczne. Jego dwa najbardziej znaczące artykuły to: (pl)
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| - John Gordon Skellam (1914-1979) was a statistician and ecologist, who discovered the Skellam distribution. Skellam was born in Staffordshire. He was educated at Hanley High School where he won several scholarships including free admission to New College in Oxford. He was one of the most respected members of the British Region of the Biometric Society. In 1951, John G. Skellam developed the reaction-diffusion model of invasion biology. This model describes the dynamics of populations, which simultaneously develops and spreads, and provides that the invasion front moves with constant speed. He explained on the basis of habitation muskrat introduced to Europe that only by chance the species may be in a place where it would have to grow. Skellam has provided a model that allows to take the dynamics of populations as a random variable at any time t. Its stochastic form is much more flexible than previous deterministic equations. (en)
- John Gordon Skellam (Staffordshire, 1914 – estate 1979) è stato uno statistico britannico. Frequentò la Hanley High School, dove vinse diversi premi scolastici, tra i quali l'ammissione gratuita al New College di Oxford. È stato uno dei più importanti membri britannici della International Biometric Society. Statistico e studioso degli ecosistemi, descrisse la distribuzione di Skellam. Nel 1951 John G. Skellam sviluppò il modello reazione-diffusione nell'ambito della terminologia dell'invasione biologica. Questo modello descrive la dinamiche di popolazione che si sviluppano e diffondono contemporaneamente e descrive come il fronte di invasione si muova con velocità costante.Spiegò sulla base dell'introduzione del topo muschiato in Europa, che solo per fortuna alcuni esemplari vennero diffusi in una zona dove potevano incrementarsi. Skellam descrisse un modello che trattava le dinamiche di una popolazione come una variabile casuale al tempo t. Tale descrizione stocastica risultò essere molto più flessibile che le precedenti equazioni deterministiche. È stato il principale redattore della rivista Biometrics, l'organo ufficiale della International Biometric Society, un'associazione internazionale con sede a Londra. I due suoi principali articoli sono
* Skellam, J. G. 1946. The frequency distribution of the difference between two Poisson variates belonging to different populations. Journal of the Royal Statistical Society: Series A 109 (3): 296.
* Skellam, J.G. 1951. Random dispersal in theoretical populations (it)
- John Gordon Skellam (ur. 1914 w hrabstwie Staffordshire w Wielkiej Brytanii, zm. 1979) – statystyk i ekolog, odkrywca rozkładu nazwanego jego nazwiskiem. Uczył się w Hanley High School gdzie zdobył szereg stypendiów w tym wolny wstęp na New College w Oxford. Był jednym z najbardziej szanowanych członków . W 1951 roku John G. Skellam rozwija model reakcji-dyfuzji biologii inwazji. Model ten opisuje dynamikę populacji, która się jednocześnie rozwija i rozprzestrzenia i przewiduje, że front inwazji przeniesie się ze stałą prędkością.Wyjaśnia on na podstawie zamieszkiwania piżmaków wprowadzonych do Europy, że tylko przypadkiem gatunek może być w miejscu, gdzie dobrze by się rozwijał. Skellam dostarczył model, który pozwala wziąć dynamikę populacji jako zmienną losową w każdej chwili czasu t. Jego stochastyczna forma jest dużo bardziej elastyczna niż wcześniejsze równania deterministyczne. Był dyrektorem ds. badań i redaktorem , oficjalnego organu Towarzystwa Biometrycznego, międzynarodowego stowarzyszenia z siedzibą w Londynie. Jego dwa najbardziej znaczące artykuły to: Skellam, J. G. 1946. The frequency distribution of the difference between two Poisson variates belonging to different populations. Journal of the Royal Statistical Society: Series A 109 (3): 296 oraz Skellam, J.G. 1951. Random dispersal in theoretical populations (pl)
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