Nowadays, language shifts (i.e., a community of speakers stops using their traditional language and speaks a new one in all communication settings) may produce a massive extinction of languages throughout the world. In this context, an important task for social sciences research should therefore be to achieve a deep comprehension of language shifts. However, modeling the social and behavioral v...

For a number field $${\mathbb {K}}$$ , and integral ideals $${\mathcal {I}}$$ {J}}$$ in its ring {O}}_{{\mathbb {K}}}$$ Nowak studied the asymptotic behavior of average Ramanujan sums $$C_{{\mathcal {J}}}({{\mathcal {I}}})$$ over both . In this article, we extend investigation by establishing formulas for second moment averages quadratic cubic fields, thereby generalizing previous works Chen, K...

Three stochastic models of genomic instability recently developed by Little and Wright (Math. Biosci., (2003) 183, 111-34), with two, three and five stages, and the two-stage genomic instability model of Nowak et al. (Proc. Natl Acad. Sci. USA, (2002) 99, 16226-16231) are compared with the four-stage model proposed by Luebeck and Moolgavkar (Proc. Natl Acad. Sci. USA, (2002) 99, 15095-15100) th...

Robert D. Nowak , Member, IEEE, Barry D. Van Veeny, Member, IEEE, Department of Electrical and Computer Engineering University of Wisconsin-Madison, WI 53706 USA Abstract | One important application of Volterra lters is the equalization of nonlinear systems. Under certain conditions this problem can be posed as a xed point problem involving a contraction mapping. In this paper, we generalize th...

In a recent paper, Traulsen and Nowak use a multilevel selection model to show that cooperation can be favored by group selection in finite populations [Traulsen A, Nowak M (2006) Proc Natl Acad Sci USA 103:10952-10955]. The authors challenge the view that kin selection may be an appropriate interpretation of their results and state that group selection is a distinctive process "that permeates ...

14 października 2022 r. rektor Uniwersytetu Warszawskiego prof. dr hab. Alojzy Z. Nowak oraz dyrektor Wojskowego Instytutu Medycznego gen. broni n. med. Grzegorz Gielerak, podpisali porozumienie w sprawie współpracy organizacyjnej dydaktyczno-badawczej przy tworzeniu i prowadzeniu kształcenia lekarzy na nowo formowanym Wydziale Medycznym Warszawskiego. WIM jest głównym partnerem UW realizacji p...