Search results for "Wald"

Our Friend and Mathematician Karl Strambach

2020

This paper is dedicated to Karl Strambach on the occasion of his 80th birthday. Here we want to describe our work with Prof. Karl Strambach.

Possible involvement of the IL4 gene in Waldenström's macroglobulinemia

1994

Abstract We report the results of a molecular investigation of 11 patients affected by Waldenstrom's macroglobulinemia, a rare B-cell malignancy characterized by an excessive proliferation of immunoglobulin(Ig)M-secreting plasmacytoid cells. In particular, we studied the interleukin-4 (IL4) gene, which codes for a B-specific growth factor capable of stimulating the proliferation and differentiation of secreting plasma cells. By Southern hybridization, in three patients we found the presence of additional bands in comparison with the expected pattern; moreover, these bands showed a different degree of intensity.

Restauro del Moderno: il Centro Civico di Oswald Mathias Ungers a Gibellina Nuova.

2012

An algorithm based in Ewald's method to calculate lattice sums in the framework of crystal field theory

1992

A simple procedure to help calculate the electrostatic potential at any point inside an ionic crystal is proposed and tested. The rationale for the mathematical algorithm to calculate lattice sums is based on Ewald's technique. The method is discussed with regard to the dimensions and shape of the crystal lattice. Electrostatic potential for NaCl and MgO type structures are obtained and compared with the values calculated by means of Ewald's method

Species of Oswaldella Stechow, 1919 (Cnidaria, Hydrozoa) from recent antarctic expeditions with R.V. 'Polarstern', with the description of eight new …

1997

Twelve species of the genusOswaldellaStechow have been studied, eight of which are new to science [Oswaldella delicatasp. nov.,O. encarnaesp. nov.,O. garciacarrascosaisp. nov.,O. gracilissp. nov.,O. grandissp. nov.,O. incognitasp. nov.,O. obscurasp. nov.andO. rigidasp. nov.], originating from the Weddell Sea and collected by several antarctic expeditions with R.V.Polarstern. Each is described and figured, its systematic position is considered and current data concerning its autecology and geographical distribution are given. Finally, a comparative table is presented including the principal features of all known species of the genus.

Breaking molds: Oswaldella laertesi, sp. nov., a unique Antarctic species of Oswaldella Stechow, 1919 (Cnidaria: Hydrozoa: Kirchenpaueriidae)

2007

A new species of the Antarctic genus Oswaldella Stechow is described and figured, and its position amongst the remaining species of the genus is discussed. The material was collected from the Ross Sea area (Antarctica) during the BioRoss survey of the western Ross Sea and Balleny Islands in 2004. Oswaldella laertesi, sp. nov., is unique amongst known species of the genus in having hydrocladia arranged in three longitudinal rows.

<p><strong>SEM study of species of <em>Oswaldella</em> Stechow, 1919 (Cnidaria, Hydrozoa, </strong><br /><stro…

2015

Oswaldella is the most speciose genus, and one of the most characteristic, of hydrozoans inhabiting the Antarctic benthic marine ecosystem. Its species have relatively many important taxonomic characters allowing for their identification. Some of them, however, are difficult to study properly with a compound microscope. With the aim of improving scientific knowledge concerning species of the genus, a SEM survey of species of Oswaldella was carried out to study key morphological characters. Fourteen out of the 27 known nominal species were considered. The study has revealed unknown important characters, such as the presence of nematothecae associated with the nematophores at the cauline apop…

Finite Sample Sizes of the GRS Test in the Presence of Dynamic Correlation and Conditional Heteroskedasticity

2017

This paper investigates the finite sample properties of the widely-used Gibbons, Ross, Shanken (1989) (GRS) test in the presence of both conditional correlation and conditional heteroskedasticity. It finds that the GRS test exhibits serious size distortions resulting in potentially misleading statistical inferences. The correct critical values, as reported in the study, are considerably larger than suggested by the GRS test.

Days of the Cavemen? : Adorno, Spengler, and the Anatomy of Caesarism

2021

Abstract This article addresses the controversial question of Theodor W. Adorno’s debt to right-wing Zivilisationskritik by a close reading of his essay “Spengler after the Decline” (1950). The article shows that despite Adorno’s harsh polemics against Oswald Spengler’s Decline of the West (1918, 1922), he sought to make Spengler’s analysis of Weimar Germany’s undemocratic tendencies—“Caesarism”—serve progressive ends. However, Adorno’s essay was not just an effort at “coming to terms with the past” in Adenauerian West Germany. Reading the essay’s original 1941 version together with Adorno’s correspondence with Max Horkheimer sheds light on Spengler as an overlooked key (next to Max Weber, …

Maximal ℓ p ‐regularity of multiterm fractional equations with delay

2020

[EN] We provide a characterization for the existence and uniqueness of solutions in the space of vector-valued sequences l(p) (Z, X)for the multiterm fractional delayed model in the form Delta(alpha)u(n) + lambda Delta(beta)u(n) = Lambda u(n) + u(n-tau) + f(n), n is an element of Z, alpha, beta is an element of R+, tau is an element of Z, lambda is an element of R, where X is a Banach space, A is a closed linear operator with domain D(A) defined on X, f is an element of l(p)(Z,X) and Delta(Gamma) denotes the Grunwald-Letkinov fractional derivative of order Gamma > 0. We also give some conditions to ensure the existence of solutions when adding nonlinearities. Finally, we illustrate our resu…