An episode of extremely high PM concentrations over Central Europe caused by dust emitted over the southern Ukraine W. Birmili, K. Schepanski, A. Ansmann, G. Spindler, I. Tegen, B. Wehner, A. Nowak, E. Reimer, I. Mattis, K. Müller, E. Brüggemann, T. Gnauk, H. Herrmann, A. Wiedensohler, D. Althausen, A. Schladitz, T. Tuch, and G. Löschau Leibniz Institute for Tropospheric Research, Leipzig, Germ...

This paper proposes and analyzes a model of stochastic evolution in finite populations. The expected motion in our model resembles the standard replicator dynamic when the population is large, but is qualitatively different when the population size is small, due to the difference between maximizing payoff and maximizing relative payoff. Moreover, even in large populations the asymptotic behavio...

Exploiting the fact that standard models of within-host viral infections of target cell populations by HIV, developed by Perelson and Nelson [SIAM Rev., 41 (1999), pp. 3–44] and Nowak and May [Virus Dynamics, Oxford University Press, New York, 2000], give rise to competitive three dimensional dynamical systems, we provide a global analysis of their dynamics. If the basic reproduction number R0 ...

We present the first adaptive strategy for active learning in the setting of classification with smooth decision boundary. The problem of adaptivity (to unknown distributional parameters) has remained opened since the seminal work of Castro and Nowak (2007), which first established (active learning) rates for this setting. While some recent advances on this problem establish adaptive rates in t...

The dog family, Canidae, is a widely distributed group of species that have evolved and radiated relatively recently into 16 genera and 36 recognized species (Nowak 1999). Specific taxonomic designations for some canid taxa can be unclear due to frequent interspecific hybridization among species in both historical and contemporary times, and our imperfect molecular genetic approaches for determ...

E. Gallardo,1,* L. J. Martínez,2 A. K. Nowak,1 D. Sarkar,1,3 H. P. van der Meulen,1 J. M. Calleja,1 C. Tejedor,1 I. Prieto,2 D. Granados,2 A. G. Taboada,2 J. M. García,2 and P. A. Postigo2 1Departamento de Física de Materiales, Universidad Autónoma de Madrid, E-28049 Madrid, Spain 2Instituto de Microelectrónica de Madrid, Centro Nacional de Microelectrónica, Consejo Superior de Investigaciones ...

In this paper we construct a functor Φ : proTop → proANR which extends Mardešić correspondence that assigns to every metrizable space its canonical ANR-resolution. Such a functor allows one to define the strong shape category of prospaces and, moreover, to define a class of spaces, called strongly fibered, that play for strong shape equivalences the role that ANRspaces play for ordinary shape e...

R andom searches are routinely used in many algorithms, for instance, when looking for the shortest path connecting 100 cities or for ordering genomes in a most-parsimonious descendency tree. In this issue of PNAS, Matsen and Nowak (1) use a random search for another type of problem, that of finding coherence rather than optimality. The task thus consists of reaching unanimity. The proposed sol...

s; Abstract 7020; 2012 iMIG meeting, Session IB.5 11. Buikhuisen WA, Burgers JA, Vincent AD, Korse CM, van Klaveren RJ, Schramel FM, Pavlakis N, Nowak AK, Custers FL, Schouwink JH, Gans SJ, Groen HJ, Strankinga WF, Baas P . Thalidomide versus active supportive care for maintenance in patients with malignant mesothelioma after first-line chemotherapy (NVALT 5): an open-label, multicentre, random...