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Dynamics of Ferrofluidic Flow in the Taylor-Couette System With a Small Aspect Ratio

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We investigate fundamental nonlinear dynamics of ferrofluidic Taylor-Couette flow - flow confined be-tween two concentric independently rotating cylinders - consider small aspect ratio by solving the ferro-hydrodynamical equations, carrying out systematic bifurcation analysis. Without magnetic field, we find steady flow

We investigate fundamental nonlinear dynamics of ferrofluidic Taylor-Couette flow - flow confined be-tween two concentric independently rotating cylinders - consider small aspect ratio by solving the ferro-hydrodynamical equations, carrying out systematic bifurcation analysis. Without magnetic field, we find steady flow patterns, previously observed with a simple fluid, such as those containing normal one- or two vortex cells, as well as anomalous one-cell and twin-cell flow states. However, when a symmetry-breaking transverse magnetic field is present, all flow states exhibit stimulated, finite two-fold mode. Various bifurcations between steady and unsteady states can occur, corresponding to the transitions between the two-cell and one-cell states. While unsteady, axially oscillating flow states can arise, we also detect the emergence of new unsteady flow states. In particular, we uncover two new states: one contains only the azimuthally oscillating solution in the configuration of the twin-cell flow state, and an-other a rotating flow state. Topologically, these flow states are a limit cycle and a quasiperiodic solution on a two-torus, respectively. Emergence of new flow states in addition to observed ones with classical fluid, indicates that richer but potentially more controllable dynamics in ferrofluidic flows, as such flow states depend on the external magnetic field.

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2017-01-06

Moving Sustainability Forward: A Game-based Approach For Building Confidence In Municipal Administration

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Cities with a car-oriented mobility system are significant consumers of energy and require drastic transformations in their structure and function to minimize their harmful impacts on environment and people and to achieve sustainability goals. To promote such sustainable transformations, municipal

Cities with a car-oriented mobility system are significant consumers of energy and require drastic transformations in their structure and function to minimize their harmful impacts on environment and people and to achieve sustainability goals. To promote such sustainable transformations, municipal administrators need to act as change-agents. Because municipal governments are often not agile organizations, they tend toward incrementalism even in the pursuit of transformational goals. Therefore, there is a need in municipal governments to build individual transformative capacity so that municipal administrators can design, test, and implement plans, projects, and policies that are capable of transforming cities toward sustainability. This research presents a game-based workshop, “Stadt-liche Ziele” (AudaCity), that uses a backcasting approach to make municipal administrators build a sustainability strategy. I conducted a pilot study to test the effects of the game on municipal administrators’ confidence in their own ability and power to implement sustainability actions, a key determinant of transformative capacity. Five municipal administrators from Lüneburg, Germany, working on mobility issues, participated in a three-hour-workshop playing the game. Interviews and questionnaires were used before and after the workshop and participants’ contributions during the event were recorded to explore collective changes in confidence. Results indicate that the game increased participant confidence by rewarding collective success, breaking down an ambitious goal into achievable tasks, and acknowledging how administrators’ current actions already contribute to the goal.

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2018-06-28

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Klassiker des (Kinder)-Grusels schöpfen neue Lebenskraft: eine mundartliche Renaissance

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ABSTRACT (English)

Heinrich Hoffmann`s renowned Struwwelpeter and the famous Grimm brothers' fairy tales have been the subject of exhaustive pedagogical and psychological scrutiny. By means of shocking and fascinating literary elements Struwwelpeter's revolutionary didactic horror-comedy as well as the instructive horror-fantasy

ABSTRACT (English)

Heinrich Hoffmann`s renowned Struwwelpeter and the famous Grimm brothers' fairy tales have been the subject of exhaustive pedagogical and psychological scrutiny. By means of shocking and fascinating literary elements Struwwelpeter's revolutionary didactic horror-comedy as well as the instructive horror-fantasy inherent in fairy tales are able to cast an enchanting, enlightening spell on their audience. However, both Hoffmann's and the Grimm's adventurous stories have suffered harsh criticism particularly owing to their often gruesome, macabre and unrealistic subject matter. Notwithstanding the barrage of denunciating objections, the remarkable longevity of Fidgety Philip, Little Red Riding Hood and Co appears to know no bounds, as their ingenious formula for success comprising captivatingly shocking, spine-tingling elements of both entertaining and educational value continues to inspire contemporary adaptations. Several German dialects have also discovered and devoted themselves to the magical world of Hoffmann's chaotic rascals and the Grimm's fascinating fairy tale characters in furtherance of enlivening them with the identity, culture and local flavor of their respective region.

The current study aims to demonstrate the extent to which dialectal adaptations of the aforesaid tales succeed in not only revitalizing the original narratives including their pedagogical and psychodynamic quintessence but also in capturing the readers' hearts by virtue of their intimate parlance/phraseology. This particular philological approach illustrates the symbiotic interaction between regional German dialects and well-known (children's) Horror-stories.

ABSTRACT (German)

Bisher waren sowohl der renommierte Struwwelpeter Heinrich Hoffmanns als auch die berühmten Märchen der Brüder Grimm Objekte erschöpfender pädagogischer und psychologischer Betrachtungen. Die revolutionäre didaktische Gruselkomik der struwwelpetrigen Abenteuer sowie die lehrhafte Gruselphantastik der Märchen vermögen vermittels ihrer schockierenden und zugleich faszinierenden Elemente Menschen jeden Alters in ihren verzaubernden, lebenserhellenden Bann zu ziehen. Allerdings mussten die hoffmannschen und grimmschen Geschichten insbesondere auf Grund grausamer, wirklichkeitsfremder Inhalte auch als Zielscheibe heftigster Kritik fungieren. Nichtsdestotrotz scheint der steilen Karriere von Zappelphilipp, Rotkäppchen und Co keine Grenzen gesetzt, denn ihre raffinierte Erfolgsformel bestehend aus unterhaltsam-belehrenden Schock- und Zaubermotiven inspiriert stets neue Adaptionen. So haben auch die deutschsprachigen Mundarten längst das skurille sowie zauberhafte Reich der chaotischen Lausbuben und Märchencharaktere für sich entdeckt, um diese mit der jeweils eigenen regionalkolorierten Identität und Kultur zu beseelen.

Im Rahmen dieser Arbeit gilt es nun zu demonstrieren, inwiefern es den dialektalen Petriaden und Märchenversionen gelingt, nicht nur die Erzählungen samt ihrer pädagogisch sowie psychodynamisch wertvollen Kerngehalte zu neuem Leben zu erwecken, sondern sich darüber hinaus in anheimelnder Weise die Herzen der Leserschaft zu erobern. Diese einzigartige philologische Perspektive beleuchtet die Erfolg versprechende Wechselwirkung zwischen den ortsspezifischen Sprachgeflechten und den (Kinder)-Gruselklassikern.

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Date Created
2015

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Working upon the DDR and Stasi past: the role of humor in Thomas Brussig's Helden wie wir and paralanguage in Eyal Sivan's Aus Liebe zum Volk and Sebastian Dehnhardt's Das Wunder von Leipzig

Description

ABSTRACT

German history during the 20th century was extremely complex—containing numerous events that can be labelled horrific and traumatic. The horrors and traumas of WWII forced Germans to actively address their country’s National Socialist pasts by taking responsibility for their

ABSTRACT

German history during the 20th century was extremely complex—containing numerous events that can be labelled horrific and traumatic. The horrors and traumas of WWII forced Germans to actively address their country’s National Socialist pasts by taking responsibility for their roles, creating a national memory about the Nazi atrocities and implementing the reparations program, the Wiedergutmachungsabkommen, with the newly formed nation of Israel. The social theorist Theodor Adorno wrote in his 1959 essay “Was bedeutet: Aufarbeitung der Vergangenheit?” about three subtly nuanced terms: Aufarbeitung der Vergangenheit, Verarbeitung der Vergangenheit and Vergangensheitbewältigung, in which he addresses the various ways that Germany was dealing with traumatic events from this National Socialist past. Adorno specifically demanded a constant renegotiation of the past or Verarbeitung der Vergangenheit because it is the only way forward, through which people remember the horrors and atrocities of the past and work towards not allowing those events to occur again.

This thesis applies the theoretical framework set forth by Adorno to explore efforts to engage the DDR and Stasi past after the Fall of the Wall and reunification. Specifically, it examines the concept of Verarbeitung der Vergangenheit and demonstrates how Thomas Brussig’s satirical novel Helden wie wir, and two documentary films Aus Liebe zum Volk and Das Wunder von Leipzig are examples of working upon this DDR and Stasi past. More specifically, the utilization of humor in the novel and the paralanguage modifications in the films provide insight to the feelings and emotions that individuals had about their pasts in the DDR. It is through this expression of emotion and feelings while writing and speaking about the past, which serves as the immediate moment when individuals actively working upon their pasts.

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2016