We present the second record of Polistes associus (Kohl, 1898) (Hymenoptera, Vespidae) from Slovakia after 66 years and discuss distribution this species in Europe. Morphological features are compared with those other morphologically similar congeners occurring Central Europe, bischoffi Weyrauch, 1937 nimpha (Christ, 1791), differential diagnoses supplemented figures.

Tilman Sauerwald, Jörg Hennemann, Claus-Dieter Kohl, Thorsten Wagner, Stefanie Russ 1 Lab of Measurement Technology, University of Saarland, 66123 Saarbrücken, Germany 2 Institute of Applied Physics, Justus Liebig University Giessen, 35392 Giessen, Germany 3 Faculty of Science, Department of Chemistry, University of Paderborn, 33098 Paderborn, Germany 4 Institut für Theoretische Physik, Freie U...

Let K be a field of characteristic not p (an odd prime), containing a primitive p-th root of unity ζ, and let L = K[z] with x n − a the minimal polynomial of z over K: thus L|K is a Kummer extension, with cyclic Galois group G = 〈σ〉 acting on L via σ(z) = ζz. T. Kohl, 1998, showed that L|K has pn−1 Hopf Galois structures. In this paper we describe these Hopf Galois structures.

New sex associations are proposed for four species of Darditilla: Darditillaamabilis (Gerstaecker, 1874); Darditillabejaranoi Casal, 1968; Darditilladebilis (Gerstaecker, 1874); and Darditillafelina (Burmeister, 1854). Darditillabotija Casal, 1965, syn. n. is the male of Darditillaamabilis; the other three males were previously unknown. Mutilladecorosa Kohl, 1882, syn. n. is conspecific with Da...

DEDICATION I would like to dedicate this work to my family and my fiancé for their continuous love and belief in me. ii ACKNOWLEDGEMENT I would like to thank my thesis advisor, Dr. Martin A. Brooke, for his constant support, flexibility, flow of ideas, and patience during this research program. He has allowed me to explore new ideas, but has constantly helped me stay focused on the main objecti...

We compare various approaches for the determination of finite sample risks of one-dimensional location M-estimators on convex-contaminationand total-variation-type neighborhoods. As risks we consider MSE and certain over-/ undershooting probabilities like in Huber (1968) and Rieder (1980). These methods include (numerically) exact formulae (via FFT, Kohl et al. (2005)), Edgeworth expansions, sa...