• Quantifying seasonal population fluxes driving rubella transmission dynamics using mobile phone data 

  Wesolowski, Amy; Metcalf, C. J. E.; Eagle, Nathan; Kombich, Janeth; Grenfell, Bryan T.; Bjørnstadi, Ottar N.; Lessler, Justin; Tatem, Andrew J.; Buckee, Caroline O. (Proceedings of the National Academy of Sciences, 2014-12-11)

  Changing patterns of human aggregation are thought to drive annual and multiannual outbreaks of infectious diseases, but the paucity of data about travel behavior and population flux over time has made this idea difficult ...
• Immunization coverage and its determinants among children aged 12 - 23 months in a peri-urban area of Kenya 

  Maina, Lilian Chepkemoi; Karanja, Simon; Kombich, Janeth (The Pan African Medical Journal, 2013-01-02)

  Introduction: The institutionalization of strong immunization services over recent years has ensured that today more than 70% of the worlds' targeted population is reached. In Kenya, approximately 77% of children aged ...
• Automorphisms of Zero Divisor Graphs of Square Radical Zero Commutative Unital Finite Rings 

  Mude, Lao Hussein; Oduor, Owino Maurice; Onyango, Ojiema Michael (Journal of Advances in Mathematics, 2020)

  There has been extensive research on the structure of zero divisors and units of commutative finite rings. However, the classification of such rings via a well known structure of zero divisors has not been done in general. ...
• Classification of Units of Five Radical Zero Completely Primary Finite Rings with Variant Orders of Second Galois Ring Module Generators 

  Were, Hezron Saka; Oduor, Maurice Owino; Gichuki, Ndiritu (Asian Research Journal of Mathematics, 2022)

  Let R be a commutative completely primary finite ring with a unique maximal ideal Z(R) such that (Z(R))5 = (0); (Z(R))4 ̸= (0). Then R/Z(R) ∼= GF(p r ) is a finite field of order p r . Let R0 = GR(p kr, pk ) be a ...
• Units of Commutative Completely Primary Finite Rings of Characteristic pn 

  Oduor, Owino Maurice; Onyango, Ojiema Michael; Mmasi, Eliud (International Journ. of Algebra, 2013)

  The characterization of the group of units of any commutative ring has not been done in general, and previous studies have restricted the classes of rings or groups under consideration. In this work, we deter mine the ...

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