236 research outputs found
„Wir warten auf Prof. Brandt“: Ein Kriegsgefangenenschicksal aus Kiel
No full textDer Aufsatz von Lisa Bittner begibt sich in das Kiel der unmittelbaren Nachkriegszeit. Bittner beleuchtet in ihrem Beitrag die letztlich erfolglosen Versuche verschiedener Akteurinnen und Akteure, den Kieler Juraprofessor Hans Kurt Paul Brandt aus der jugoslawischen Kriegsgefangenschaft zu befreien. Die Autorin fragt nach den Motivationen einzelner Gruppen, sich für dessen Heimkehr einzusetzen, und reflektiert das starke Engagement der Studierenden, die dieser Thematik einen eigenen Artikel im Kieler Studenten, der ersten Studierendenzeitung der CAU nach dem Zweiten Weltkrieg, widmeten. Gleichfalls legt der Beitrag professorale Netzwerke offen, die während der NS-Zeit geknüpft wurden und noch lange darüber hinaus wirkten. Diesen gelang es nicht nur, die junge Studierendenschaft für ihre Zwecke einzuspannen, sondern auch, sich gegenseitig in der jungen Bundesrepublik zahlreiche Karrierechancen zu ermöglichen.Lisa Bittner's essay takes us back to Kiel in the immediate post-war period. In her contribution, Bittner examines the in the end unsuccessful attempts by various players to free Kiel law professor Hans Kurt Paul Brandt from Yugoslavian war captivity. The author asks about the motivations of individual groups to intercede on behalf of his return home and reflects the strong commitment of the students, who dedicated an article to this topic in the Kieler Studenten, the first student newspaper of the CAU after the Second World War. The essay likewise reveals professorial networks which were tied during the Nazi era and continued to have an impact long afterwards. Those networks succeeded not only in harnessing the young student body for their own purposes, but also in providing each other with numerous career opportunities in the young Federal Republic
Large scale dynamics of the atmosphere: Planetary waves
No full textPlanetary waves (PW) are global scale waves in the atmosphere, which are known to considerably impact weather patterns in the midlatitudes in the troposphere and the ozone distribution in the stratosphere. PW play an important role in coupling middle atmosphere dynamics. Due to the fact that climate change causes a decrease of the meridional temperature gradient, the strength of the zonal wind might decrease. This should, in turn, change the planetary wave activity (PWA).
In order to quantify possible changes in the PWA we analyze ERA–Interim temperature data (10 m to 65 km height) on the Northern Hemisphere and calculate the so-called dynamical activity index (DAI) as measure for the PWA. We analyze the PWA to find indications for PWA changes and variability. We also use rotational temperature data from hydroxyl airglow measurements at UFS Schneefernerhaus (Germany) embedded in the international Network for the Detection of Mesospheric Change (NDMC) in the upper mesosphere/lower thermosphere (UMLT).
We find an indication for a significant increase of the PWA in the stratosphere. The change of the PWA with higher zonal wavenumbers turns out to be strongest. This finding is in agreement with the expectation that a weakening of the meridional temperature gradient leads to improved vertical propagation conditions for planetary waves. With the empirical mode decomposition (EMD) we are able to extract non-stationary signals of the PWA time series. We further find that longer-term oscillations (QBO, ENSO and solar cycles) have a noticeable impact on the PW variability in all considered heights. Next to the 11-year cycle that is related to the sunspot-cycle in many studies, we also find a pronounced quasi-22-year signal. We tentatively interpret this signal as being due to the solar-magnetic-field (“Hale cycle”)
Costatoria (Costatoria?) subrotunda (BITTNER, 1901) a Smithian (Lower Triassic) marker from Tethys
No full textThe authors erect Costatoria costata var. subrotunda (Bittner) from Hungarian Lower Triassic to species level. Its subgeneric position is also discussed here. Thus, Costatoria is represented in the Werfen Formation of Dolomites area by two species: C. (Costatoria?) subrotunda (Bittner) from the upper part of Campil Member (Smithian) and C. (Costatoria) costata (Zenker) from Cencenighe and S. Lucano Members (Spathian). C. subrotunda shows a wide geographic distribution and could be considered as a helpful marker of Smithian age.-Author
Über die Therapeutisierung von Erziehung bei Günther Bittner
No full textLisa Kofler BALiteraturverzeichnis: Blatt 94-100Masterarbeit Universität Salzburg 2020Abstract/Zusammenfassung in deutscher und englischer Sprach
Egon Bittner and the Language Practices of the Police
No full textBittner’s posthumously published 1965 fieldwork, Larimer Tours (Bittner 2013 [1965]), is discussed exploring how criminology has neglected Bittner’s ethnomethodological stance and overlooked his interest in language and conversational practices. Technological records (e.g.,dash-cams, body-worn cameras) afford opportunities to extend Bittner’s seminal work with an ethnomethodological focus on police “competencies-in-action” through the study of recorded police-citizen interaction. Using data from dash-cam traffic stops and field research, this paper elaborates two competencies of the police discussed in Larimer-the use of area knowledge and procedures of interrogation. A focus on how area knowledge is utilized in an investigatory sequence of traffic stops demonstrates its interactional complexity and how “area knowledge” employed by police and citizens is made interactionally relevant and consequential to the traffic stop. Implications for criminology and the study of police-citizen interaction are discussed.+ Sprache: en
JP-5 and JP-8
No full textPrepared by Sciences International, Inc. under subcontract to Research Triangle Institute under contract no. 205-93-0606. Prepared for U.S. Department of Health and Human Services, Public Health Service, Agency for Toxic Substances and Disease Registry."Chemical manager(s)/author(s): John Risher, Patricia M. Bittner, Steve Rhodes.Includes bibliographical references (p. 141-163).205-93-060
Diisopropyl methylphosphonate
No full textPrepared by: Sciences International, Inc. under subcontract to Research Triangle Institute ; prepared for U.S. Department of Health and Human Services, Public Health Service, Agency for Toxic Substances and Disease Registry under contract no. 205-93-0606.Chemical manager(s)/author(s): Malcolm Williams, Diana Wong, Patricia M. Bittner, Steve Rhodes.Includes bibliographical references: p. 121-130.205-93-060
Nudge, control or manipulation? : analysing “soft” algorithmic controls on Fiverr
No full textPlatform providers are not only responsible for recruiting gig workers, but also for guiding them. Ideally, they manage to motivate them over the long run so that the gig workers build loyalty to the platform. The difficulty, however, seems to be reconciling the (economic) interests of the platform with the self-determination of the gig workers. This thesis defines soft control from a theoretical perspective, uniting the topics “nudging”, “algorithmic control”, “gamification” and “self-determination theory” under one term. From a practical point of view, the emphasis of this work lies on raising awareness amongst gig workers. This is done through a case study of the Help pages of the freelancer platform Fiverr, where the vast range of soft control elements and categories is demonstrated. It is shown that the largest part of the identified soft control elements may influence gig workers in their perception and conduct of their work on the platform. The identified instances of soft control may mostly be classified as nudges but also gamification ele-ments may be found. Self-determination theory thereby plays a decisive role in explaining the success or failure of the soft control elements. Identifying soft control in the case study shall help enable gig workers to deal with the subject in an informed manner and subject it to a personal evaluation. As a result, the autonomy promised in theory should be supported in practice. In oth-er words, this thesis aims at contributing to the gig workers’ effort of being able to be their own boss. This thesis concludes that the concept of soft control exceeds the discussion of nudges as a larger context is considered.von Lisa BittnerDiplomarbeit Universität Innsbruck 202
Nudge, control or manipulation? : analysing “soft” algorithmic controls on Fiverr
No full textPlatform providers are not only responsible for recruiting gig workers, but also for guiding them. Ideally, they manage to motivate them over the long run so that the gig workers build loyalty to the platform. The difficulty, however, seems to be reconciling the (economic) interests of the platform with the self-determination of the gig workers. This thesis defines soft control from a theoretical perspective, uniting the topics “nudging”, “algorithmic control”, “gamification” and “self-determination theory” under one term. From a practical point of view, the emphasis of this work lies on raising awareness amongst gig workers. This is done through a case study of the Help pages of the freelancer platform Fiverr, where the vast range of soft control elements and categories is demonstrated. It is shown that the largest part of the identified soft control elements may influence gig workers in their perception and conduct of their work on the platform. The identified instances of soft control may mostly be classified as nudges but also gamification ele-ments may be found. Self-determination theory thereby plays a decisive role in explaining the success or failure of the soft control elements. Identifying soft control in the case study shall help enable gig workers to deal with the subject in an informed manner and subject it to a personal evaluation. As a result, the autonomy promised in theory should be supported in practice. In oth-er words, this thesis aims at contributing to the gig workers’ effort of being able to be their own boss. This thesis concludes that the concept of soft control exceeds the discussion of nudges as a larger context is considered.von Lisa BittnerDiplomarbeit Universität Innsbruck 202
Understanding and predicting transient material behaviors associated with mechanical resonance in cementitious composites
No full textCementitious composite materials provide a foundation for civilized life, from underlying structural bedrock to the tallest concrete structures in the world. These infrastructure materials (e.g., concrete and rock) are challenging to inspect and characterize, in part because of their heterogeneous and multi-scale compositions. Recently, nonlinear transient dynamic mechanical resonance behaviors, also known as “slow dynamic” behaviors, have been observed in damaged cementitious composite materials, yet the physical mechanisms underlying these behaviors are not understood. These phenomena hold potential to offer new insight and improved performance for monitoring the degradation of infrastructure materials.
In this dissertation, I study the potential of slow dynamic behaviors for practical application as a nondestructive inspection method for infrastructure materials. The study includes experimental tests and analytical modeling. Most experiments were carried out on neat cement paste samples, which represent porous composite infrastructure materials in general. The study was divided into three components: observing the behavior at the global (macro) and micro-scales, modeling the behavior in terms of a physical or mechanistic basis, and applying the behavior to monitor degradation through a practical application.
A repeatable nondestructive testing approach that uses a sequential impact device was designed to extract consistent global slow dynamic conditioning observations and characteristics from prismatic cement samples. The occurrence and existence of slow dynamic behaviors depended on the extent of damage and moisture states of a specimen. A small-scale disc vibration experiment was designed to enable imaging, using an environmental scanning electron microscope during vibration excitation in a controlled environment. Moisture migration within the paste microstructure was observed at the micron scale before and after resonance vibration of the disc. A new Mechanistic Diffusion Model (MDM) was developed to explain observed global- and micro-scale experimental results. The MDM unifies the moisture state, damage extent, and time dependence of slow dynamic behaviors. The MDM was verified through further experimentation. Finally, the slow dynamic characteristics of drying cement paste prisms with varying amounts of shrinkage reducing admixture were studied and compared to linear measurements performed on the same samples. The slow dynamic behaviors provided a measure of the bulk relative material damage at a single point in time, whereas the linear methods required measurements at two different points in time, before and after damage, in order to characterize the material.
This dissertation provides a deeper understanding of slow dynamic behavior, offers a new mechanistic explanation based on moisture migration for slow dynamic behaviors in porous composite materials, and presents the basis for a single-test nondestructive approach to evaluate degradation levels in cementitious materials in a sensitive and reliable manner. The improved understanding of these dynamic behaviors will improve the design, application, and evaluation of infrastructure materials, from understanding underlying bedrock seismicity to improving structural assessments of concrete.Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2020-12-01The student, James Bittner, accepted the attached license on 2018-11-28 at 18:33.The student, James Bittner, submitted this Dissertation for approval on 2018-11-28 at 18:38.This Dissertation was approved for publication on 2018-11-29 at 14:01.DSpace SAF Submission Ingestion Package generated from Vireo submission #13137 on 2019-02-08 at 11:40:21Made available in DSpace on 2019-02-08T18:39:54Z (GMT). No. of bitstreams: 5
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