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Hvitserk is attested to by the Tale of Ragnar's Sons (Ragnarssona þáttr).He is not mentioned in any source that mentions Halfdan Ragnarsson, one of the leaders of the Great Heathen Army that invaded the Kingdom of East Anglia in 867, or vice versa, which consequently led some scholars to suggest that they are the same individual with Hvitserk being only a nickname.
Because Halfdan is not mentioned in any source that mentions Hvitserk, some scholars have suggested that they are the same individual – a possibility reinforced by the fact that Halfdan was a relatively common name among Vikings and Hvitserk "white shirt" may have been an epithet or nickname that distinguished Halfdan from other men by the ...
Ivar the Boneless (Old Norse: Ívarr hinn Beinlausi [ˈiːˌwɑrː ˈhinː ˈbɛinˌlɔuse]; died c. 873), also known as Ivar Ragnarsson, was a Viking leader who invaded England and Ireland. According to the Tale of Ragnar Lodbrok , he was the son of Aslaug and her husband Ragnar Loðbrok , and was the brother of Björn Ironside , Halvdan (or ...
The Kermack–McKendrick epidemic model was successful in predicting the behavior of outbreaks very similar to that observed in many recorded epidemics. [7] Recently, agent-based models (ABMs) have been used in exchange for simpler compartmental models. [8]
Influenza A virus subtype H1N1: 2,035 [284] [285] [286] 2015–16 Zika virus epidemic: 2015–2016 Worldwide Zika virus: 53 [287] 2016 Angola and Democratic Republic of the Congo yellow fever outbreak: 2016 Angola and Democratic Republic of the Congo: Yellow fever: 498 (377 in Angola, 121 in Congo) [288] 2016–2022 Yemen cholera outbreak: 2016 ...
Sigurd married Blaeja, the daughter of king Ælla of Northumbria and they had two children, Harthacanute and Áslaug Sigurðardóttir, who was married to Helge of the Dagling lineage. [ 11 ] Helge may have briefly succeeded his purported father-in-law as king of Denmark before being overthrown by Olof , a Viking chief who swept down from Sweden ...
For the full specification of the model, the arrows should be labeled with the transition rates between compartments. Between S and I, the transition rate is assumed to be (/) / = /, where is the total population, is the average number of contacts per person per time, multiplied by the probability of disease transmission in a contact between a susceptible and an infectious subject, and / is ...
The Wells-Riley model is a simple model of the airborne transmission of infectious diseases, [1] [2] developed by William F. Wells and Richard L. Riley for tuberculosis [3] and measles. [ 4 ] Wells-Riley can also be applied to other diseases transmitted in the air, such as COVID-19 .