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On the Stability of Objective Structures
The main focus of this thesis is the discussion of stability of an objective (atomic) structure consisting of single atoms which interact via a potential. We define atomistic stability using a second derivative test. More precisely, atomistic stability is equivalent to a vanishing first derivative of the configurational energy (at the corresponding point) and the coerciveness of the second deri…
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- volome 38
- ISBN/ISSN
- 9783832553784
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Modellierung des Fachwissens von Lehrkräften in der Teilchenphysik
Die Teilchenphysik als Teilgebiet der modernen Physik gewinnt zunehmend an Bedeutung im schulischen Physikunterricht. In dieser Arbeit wird erstmalig das von Lehrkräften benötigte Fachwissen zur Teilchenphysik modelliert, wobei Fachwissen als ein Teil des Professionswissens verstanden wird. Als Fachwissensdimensionen werden die Inhaltsbereiche und die Wissensarten in den Fokus genommen, für …
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- volome 315
- ISBN/ISSN
- 9783832553050
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Modeling of Moving Sound Sources Based on Array Measurements
When auralizing moving sound sources in Virtual Reality (VR) environments, the two main input parameters are the location and radiated signal of the source. An array measurement-based model is developed to characterize moving sound sources regarding the two parameters in this thesis. This model utilizes beamforming, i.e. delay and sum beamforming (DSB) and compressive beamforming (CB) to obtain…
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- ISBN/ISSN
- 9783832547592
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Investigation on the dissemination of unit watt in airborne sound and applica…
Sound power describes the emission of sound from sound sources. Despite today's state-of-the art measurement techniques, the current sound power determination methods are restricted due to various limitations. To overcome these limitations, a new sound power determination method is proposed, aiming at the establishment of traceability in airborne sound. This will enable the characterization of …
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- ISBN/ISSN
- 9783832549718
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High Performance Propagation of Large Object Populations in Earth Orbits
Orbital debris is becoming an increasing problem for space flight missions. New satellite launches, explosions, collisions and other events cause a steady rise in the number of objects orbiting the Earth. It is therefore important to determine the future development of the object population, as well as the effectiveness of debris mitigation measures, in long-term simulations. Orbital propagatio…
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- ISBN/ISSN
- 9783832541651
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Fast Measurement of Individual Head-Related Transfer Functions
While binaural technology applications gained in popularity in recent years, the majority of applications still use non-individual Head-Related Transfer Functions (HRTFs) from artificial heads. However, certain applications, for example research of spatial hearing or hearing attention, require an physically exact and realistic binaural signal. The limiting factor that prohibits the widespread u…
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- ISBN/ISSN
- 9783832549060
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Martyrdom in the Modern Middle East
This volume assembles contributions from different academic perspectives (religious and Islamic studies, literary and theatre studies, theology, sociology and history) on modern manifestations of martyrdom in the diverse Middle Eastern religious traditions, including Islam, Christianity, Judaism and the Baha'i-faith. The latter is considered in more detail since it is often not included in comp…
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- ISBN/ISSN
- 9783956500305
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Acarorum Catalogus IX
The present 9th volume of the series Acarorum Catalogus contains lists of mites of 13 families, 225 genera and 1268 species of the superfamilies Schizoglyphoidea, Histiostomatoidea, Canestrinioidea and Hemisarcoptoidea. Most of these mites live on insects or other animals (as parasites, phoretic or commensals), some inhabit rotten plant material, dung or fungi. Mites of the families Chetochelac…
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- 9786192480585
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Charged Particle Optics Theory: An Introduction
Charged Particle Optics Theory: An Introduction identifies the most important concepts of charged particle optics theory, and derives each mathematically from the first principles of physics. Assuming an advanced undergraduate-level understanding of calculus, this book follows a logical progression, with each concept building upon the preceding one. Beginning with a non-mathematical survey of t…
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- 9781482229950
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Chapter 8 Voice-enabled assistive robots for handling autism spectrum conditions
Autism spectrum conditions (ASC) are neurodevelopmental conditions, characterized by impairments in social interaction, communication (i.e., verbal and non-verbal language), and by restricted interests and repetitive behaviour. The application of robots as a therapy tool has, however, shown promising results, namely because of the robot’s ability to improve social engagement by eliciting appr…
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- 9781614515159
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