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Zweimal Kyros
(2015)
«Kyros» taucht als Fürstenname dreimal in der Überlieferung des Perserreiches auf. Der Historiker Xenophon von Athen (427–ca. 355 v. Chr.) hat in seinen Schriften über zwei Träger dieses Namens berichtet und sie durchaus unterschiedlich bewertet: Kyros II. («der Große»), Mehrer des Reiches, sowie ein Jahrhundert später Kyros, Sohn des Dareios und jüngerer Bruder des Perserkönigs Artaxerxes II. Der ältere Kyros ist namengebender Protagonist eines Fürstenspiegels (der Kyropädie), wird also grundsätzlich positiv und als ein Vorbild für andere dargestellt. Am erfolglosen Kampf des jüngeren Kyros um die Krone des Perserreichs hatte Xenophon als Offizier griechischer Söldner selbst teilgenommen. Aus dem Vergleich von Darstellung und Bewertung der beiden Fürsten lassen sich die Ansprüche Xenophons an einen idealen Herrscher ableiten, was hier unternommen werden soll. Zugleich ermöglichen diese Ergebnisse, Xenophon als Historiker und politischen Denker in der zeitgenössischen Debatte um die beste Staatsform einzubetten.
E-Mail tracking uses personalized links and pictures for gathering information on user behavior, for example, where, when, on what kind of device, and how often an e-mail has been read. This information can be very useful for marketing purposes. On the other hand, privacy and security requirements of customers could be violated by tracking. This paper examines how e-mail tracking works, how it can be detected automatically, and to what extent it is used in German e-commerce. We develop a detection model and software tool in order to collect and analyze more than 600 newsletter e-mails from companies of several different industries. The results show that the usage of e-mail tracking in Germany is prevalent but also varies depending on the industry.
Prozessorientierte Didaktik
(2015)
n diesem Beitrag finden Sie ein von mir entwickeltes Konzept zum Lehren und Lernen in der Schule1. Ich nenne dieses Konzept prozessorientierte Didaktik. Ich habe die Hoffnung, gemeinsam mit Ihnen als Lehrer oder Lehramtsstudierende, aber auch mit Eltern, Wissenschaftlern, Experten für Bildung und Schülern, einen Beitrag zur Verbesserung unserer Schulpraxis zu leisten. Dass Schule sich bereits im Wandel befindet und wunderbar gelingen kann, sieht man beispielsweise an den Preisträgern des Deutschen Schulpreises. Leider sind diese Schulen immer noch in der Minderheit. Dieses Verhältnis umzukehren ist eine unserer größten Bildungsaufgaben für die nächsten Jahrzehnte.
Network Topology Discovery and Inventory Listing are two of the primary features of modern network monitoring systems (NMS). Current NMSs rely heavily on active scanning techniques for discovering and mapping network information. Although this approach works, it introduces some major drawbacks such as the performance impact it can exact, specially in larger network environments. As a consequence, scans are often run less frequently which can result in stale information being presented and used by the network monitoring system. Alternatively, some NMSs rely on their agents being deployed on the hosts they monitor. In this article, we present a new approach to Network Topology Discovery and Network Inventory Listing using only passive monitoring and scanning techniques. The proposed techniques rely solely on the event logs produced by the hosts and network devices present within a network. Finally, we discuss some of the advantages and disadvantages of our approach.
Processes having the same bridges as a given reference Markov process constitute its reciprocal class. In this paper we study the reciprocal class of compound Poisson processes whose jumps belong to a finite set . We propose a characterization of the reciprocal class as the unique set of probability measures on which a family of time and space transformations induces the same density, expressed in terms of the reciprocal invariants. The geometry of plays a crucial role in the design of the transformations, and we use tools from discrete geometry to obtain an optimal characterization. We deduce explicit conditions for two Markov jump processes to belong to the same class. Finally, we provide a natural interpretation of the invariants as short-time asymptotics for the probability that the reference process makes a cycle around its current state.
We discuss an intervention programme for kindergarten and school teachers' continuing education in Germany that targets biases against language outside a perceived monolingual ‘standard’ and its speakers. The programme combines anti-bias methods relating to linguistic diversity with objectives of raising critical language awareness. Evaluation through teachers' workshops in Berlin and Brandenburg points to positive and enduring attitudinal changes in participants, but not in control groups that did not attend workshops, and effects were independent of personal variables gender and teaching subject and only weakly associated with age. We relate these effects to such programme features as indirect and inclusive methods that foster active engagement, and the combination of ‘safer’ topics targeting attitudes towards linguistic structures with more challenging ones dealing with the discrimination of speakers.
Nonlinear data assimilation
(2015)
This book contains two review articles on nonlinear data assimilation that deal with closely related topics but were written and can be read independently. Both contributions focus on so-called particle filters.
The first contribution by Jan van Leeuwen focuses on the potential of proposal densities. It discusses the issues with present-day particle filters and explorers new ideas for proposal densities to solve them, converging to particle filters that work well in systems of any dimension, closing the contribution with a high-dimensional example. The second contribution by Cheng and Reich discusses a unified framework for ensemble-transform particle filters. This allows one to bridge successful ensemble Kalman filters with fully nonlinear particle filters, and allows a proper introduction of localization in particle filters, which has been lacking up to now.
Das Prasxisbuch ist DER praktische Ratgeber zum Thema Therapeutisches Klettern. In konkreten Anwendungsbeispielen werden genau beschriebene Therapieboulder vorgestellt.
Behandelt werden dabei: Wirbelsäule, Schultergelenk, Kniegelenk und Sprunggelenk.
Praktische Hinweise zu Therapiekletterwänden und Therapieklettergriffen, sowie Informationen zu Physiologoie und Anatomie sind ebenfalls enthalten.
Therapeutisches Klettern - Das Praxisbuch vermittelt die nötigen Kenntnisse um mit Patienten an der Therapie Kletterwand arbeiten zu können.
Lusitania
(2015)