Radio - Staff - Elwood Ryan, Kurt Schmeissen, Louis Cohen, and Lillian Dixon

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Radio - Staff - Elwood Ryan, Kurt Schmeissen, Louis Cohen, and Lillian Dixon

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Karl Friedrich Becker's Weltgeschichte.

Mode of access: Internet.

Software engineering for self-adaptive systems:a research roadmap

The goal of this roadmap paper is to summarize the state-of-the-art and to identify critical challenges for the systematic software engineering of self-adaptive systems. The paper is partitioned into four parts, one for each of the identified essential views of self-adaptation: modelling dimensions, requirements, engineering, and assurances. For each view, we present the state-of-the-art and the challenges that our community must address. This roadmap paper is a result of the Dagstuhl Seminar 08031 on "Software Engineering for Self-Adaptive Systems," which took place in January 2008. © 2009 Springer Berlin Heidelberg.

"Warum bleiben wir eigentlich nicht immer hier?" Schweden als Projektionsraum für deutsche Sehnsüchte in Kurt Tucholskys 'Schloss Gripsholm' und seinen beiden Verfilmungen

Aus deutscher Perspektive hat die Darstellung von Skandinavien als nördlicher, liminaler Raum, der paradoxerweise zugleich so eng mit der eigenen nationalen Identität verknüpft erscheint, dass man für Verhältnis der Staaten seit dem 19. Jahrhundert eine Form des kulturellen Kolonialismus gelten machen kann, eine lange Tradition. Diese Einstellung setzt sich in den modernen deutschen Darstellungen vom Norden fort, unter denen Kurt Tucholskys außerordentlich populäre „Sommergeschichte“ Schloß Gripsholm, deren Beliebtheit sich auch an der Existenz zweier erfolgreicher Verfilmungen ablesen lässt, eine zentrale und wegweisende Position einnimmt. Sowohl im Roman als auch in den beiden Adaptionen erscheint Schweden als utopischer Gegenentwurf, als eine liberale und moderne alternative Heimat, die zunächst Fluchtmöglichkeiten aus dem Deutschland der 1920er, 1930er und 1960er zu bieten scheint. Weit entfernt davon ein realistisches Bild von Skandinavien entwerfen zu wollen, überbieten sich besonders die beiden Filmversionen gegenseitig in stark ästhetisierenden Entwürfen eines mit nord-romantischen Zügen versehenen „Anti-Deutschland“, an denen sich die sozio-politischen Diskurse der Zeit ablesen lassen. Dieser Aufsatz beleuchtet die Funktionalisierung des Skandinavienbildes als Imaginations- und Reflexionsraum für deutsche Wünsche und Sehnsüchte und analysiert neben der zentralen Bedeutung der räumlichen Dimension auch die Alltagsmythologischen Aspekte der Schwedendarstellung in allen drei Werken.

Martin Fischer / Matthias Becker / Georg Spöttl (Hrsg.). Kompetenzdiagnostik in der beruflichen Bildung, Probleme und Perspektiven. Frankfurt am Main: Peter Lang 2011 [Rezension]

Rezension von: Martin Fischer / Matthias Becker / Georg Spöttl (Hrsg.). Kompetenzdiagnostik in der beruflichen Bildung, Probleme und Perspektiven, Frankfurt am Main: Peter Lang 2011 (236 S.; ISBN 978-3-631-61660-4)

Best Practice Guidelines on molecular diagnostics in Duchenne/Becker muscular dystrophies

Meeting participants: Rosário dos Santos, Porto, Portugal

Similarity solutions of a Becker-Döring system with time-dependent monomer input

We formulate the Becker-Döring equations for cluster growth in the presence of a time-dependent source of monomer input. In the case of size-independent aggregation and ragmentation rate coefficients we find similarity solutions which are approached in the large time limit. The form of the solutions depends on the rate of monomer input and whether fragmentation is present in the model; four distinct types of solution are found.

The Becker-Döring equations with exponentially size-dependent rate coefficients

This paper is concerned with an analysis of the Becker-Döring equations which lie at the heart of a number of descriptions of non-equilibrium phase transitions and related complex dynamical processes. The Becker-Döring theory describes growth and fragmentation in terms of stepwise addition or removal of single particles to or from clusters of similar particles and has been applied to a wide range of problems of physicochemical and biological interest within recent years. Here we consider the case where the aggregation and fragmentation rates depend exponentially on cluster size. These choices of rate coefficients at least qualitatively correspond to physically realistic molecular clustering scenarios such as occur in, for example, simulations of simple fluids. New similarity solutions for the constant monomer Becker-Döring system are identified, and shown to be generic in the case of aggregation and fragmentation rates that depend exponentially on cluster size.

The Becker-Döring equations with monomer input, competition and inhibition

We investigate the Becker-Döring model of nucleation with three generalisations; an input of monomer, an input of inhibitor and finally, we allow the monomers to form two morphologies of cluster. We assume size-independent aggregation and fragmentation rates. Initially we consider the problem of constant monomer input and determine the steady-state solution approached in the large-time limit, and the manner in which it is approached. Secondly, in addition to a constant input of monomer we allow a constant input of inhibitor, which prevents clusters growing any larger and this removes them from the kinetics of the process; the inhibitor is consumed in the action of poisoning a cluster. We determine a critical ratio of poison to monomer input below which the cluster concentrations tend to a non-zero steady-state solution and the poison concentration tends to a finite value. Above the critical input ratio, the concentrations of all cluster sizes tend to zero and the poison concentration grows without limit. In both cases the solution in the large-time limit is determined. Finally we consider a model where monomers form two morphologies, but the inhibitor only acts on one morphology. Four cases are identified, depending on the relative poison to monomer input rates and the relative thermodynamic stability. In each case we determine the final cluster distribution and poison concentration. We find that poisoning the less stable cluster type can have a significant impact on the structure of the more stable cluster distribution; a counter-intuitive result. All results are shown to agree with numerical simulation.

Dinâmica populacional de Scaptocoris carvalhoi (becker, 1967) em Panicum maximum cv. Mombaça na região de ecótono do cerrado-pantanal sul-mato-grossense

2015

GEOPOLÍTICA NA GEOGRAFIA DO BRASIL, NOTAS SOBRE O PENSAMENTO DE BERTHA BECKER EM GEOPOLÍTICA DA AMAZÔNIA

Resumo O que se pretende com este trabalho é refletir sobre a criação de um pensamento geopolítico no Brasil, com ênfase especial em Bertha Koiffmann Becker e analisar as “trajetórias” de seu pensamento.AbstractWhat we propose in this paper is to reflect on the creation of a geopolitical thinking in Brazil, with special emphasis on Bertha Koiffmann Becker and analyze the “trajectories” of his thought.

Enhancing the trust of location acquisition systems for critical applications and location-based security services

This paper identifies a number of critical infrastructure applications that are reliant on location services from cooperative location technologies such as GPS and GSM. We show that these location technologies can be represented in a general location model, such that the model components can be used for vulnerability analysis. We perform a vulnerability analysis on these components of GSM and GPS location systems as well as a number of augmentations to these systems.