cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
To make a glass - avoid the crystal
Creators: name: Palberg, Thomas
name: Bartsch, Eckhard
name: Beyer, Richard
name: Hofmann, Maximilian
name: Lorenz, Nina
name: Marquis, Janina
name: Niu, Ran
name: Okubo, Tsuneo
Publisher: name: arXiv
Year: 2016
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Colloidal model systems allow for a flexible tuning of particle sizes, particle spacings and mutual interactions at constant temperature. Colloidal suspensions typically crystallize as soon as the interactions get sufficiently strong and long-ranged. Several strategies have been successfully applied to avoid crystallization and instead produce colloidal glasses. Most of these amorphous solids are formed at high particle concentrations. This paper shortly reviews experimental attempts to produce amorphous colloidal solids using strategies based on topological, thermodynamic and kinetic considerations. We complement this overview by introducing a (transient) amorphous solid forming in a thoroughly deionized aqueous suspension of highly charged spheres at low salt concentration and very low volume fractions.
description: Revised version submitted for the JSTAT Special Issue 'The role of structure in glassy and jammed systems' containing the proceedings of the CECAM meeting 'The role of local structure in dynamical arrest' held July 21, 2015 to July 23, 2015 at the Johannes Gutenberg University Mainz, Germany. MS contains 32 pages, 8 Figs. and 162 references
title: Performantes xAPI Logging in Moodle
Creators: name: Judel, Sven
name: Schnell, Erik
name: Schroeder, Ulrik
Publisher: name: Gesellschaft für Informatik e.V.
Year: 2022
Subjects: subject: xAPI
subject: Moodle
subject: Clientseitiges Logging
subject: Learning Analytics

description: In diesem Beitrag wird ein Plugin für das Lernmanagementsystem Moodle vorgestellt, welches ausgewählte Moodle Events in xAPI Statements überführt und an einen Learning Record Store sendet. Zusätzlich zu den serverseitig generierten Moodle Events können auch clientseitige Handlungen geloggt und überführt werden. So lassen sich Interaktionen mit Videos und interaktiven Lernaktivitäten wie H5P loggen und später analysieren. Das Plugin ist modular gestaltet, sodass nach eigenem Bedarf Überführungen weiterer Moodle oder clientseitiger Events ergänzt bzw. bestehende angepasst werden können. Studierende kontrollieren über eine Schnittstelle, ob ihre Daten, wenn überhaupt, anonym oder pseudonym erhoben werden sollen. Weiterhin wird gezeigt, dass das entwickelte Plugin die Seitenladezeit von Moodle nicht bemerkbar verzögert. Dies ermöglicht das performante Sammeln von Lerndaten einer großen Nutzerzahl mit der Berücksichtigung von Datenschutz- und datenethischen Richtlinien.
Optimal human labelling for anomaly detection in industrial inspection
Creators: name: Zander, Tim
name: Ziyan, Pan
name: Birnstill, Pascal
name: Beyerer, Jürgen
Publisher: name: KIT Scientific Publishing
Year: 2022
Subjects: Mathematical methods and models
artificial intelligence and machine learning
quality control

description: Anomaly detection with machine learning in industrial inspection systems for manufactured products relies on labelleddata. This rises the question how the labelling by humans should be conducted. We consider the case where we want to optimise the cost of the combined inspection process done by humans and an algorithm. This also influences the combined performance of the trained model as well as the knowledge of the performance of this model. We focus on so called one-class classification problem models which produce a continuous outlier score. We establish some cost model for human and machine combined inspection of samples. We then discuss in this cost model how to select two optimal boundaries of the outlier score where in between these two boundaries human inspection takes place. We also frame this established knowledge into an applicable algorithm.
title: Effektivität des Einsatzes von Virtual Reality & Augmented Reality im Geometrieunterricht
Creators: name: Tahiri, Yasamin
Publisher: name: Gesellschaft für Informatik e.V.
Year: 2022
Subjects: subject: Virtual Reality
subject: Augmented Reality
subject: Geometrie

description: Virtual Reality (VR) und Augmented Reality (AR) besitzen das Potential neue Wege des Lernens von geometrischen Inhalten zu ermöglichen. Dabei kann das geometrische Verständnis von Schülerinnen und Schülern durch die Verwendung von VR und AR im Unterricht deutlich verbessert werden. Allerdings stellt sich die Frage, ob eine Verbesserung des Geometrieverständnisses auch im direkten Vergleich zu traditionellen und computerbasierten Medien festgestellt werden kann. Ausgehend von einer Literaturrecherche werden in diesem Beitrag Ergebnisse aus Studien vorgestellt, welche die Effektivität von VR und AR im Geometrieunterricht untersuchten.
Silicon Ink Selective Emitter Process: Optimization of the Short Wavelength Response
Creators: name: Poplavskyy, D.
name: Scardera, G.
name: Abbott, M.
name: Meisel, A.
name: Chen, X.
name: Shah, S.
name: Tai, E.
name: Terry, M.
name: Lemmi, F.
Publisher: name: WIP-Munich
Year: 2010
Subjects: Wafer-Based Silicon Solar Cells and Materials Technology
Mono- and Multicrystalline Silicon Materials and Cells

description: 25th European Photovoltaic Solar Energy Conference and Exhibition / 5th World Conference on Photovoltaic Energy Conversion, 6-10 September 2010, Valencia, Spain; 2416-2419
description: The Innovalight™ Cougar™ Platform is a portfolio of simple to implement technologies that, when
combined with Innovalight Silicon Ink, enables the manufacture of a selective emitter solar cell with a non-masking
single-step diffusion. Cell efficiencies of up to 19% have been achieved. A particular feature of the selective emitter
structure is its enhanced quantum efficiency in the short wavelength region of the spectrum due to reduced emitter
recombination. In this paper we demonstrate how the properties of the front surface diffused regions affect the short
wavelength response of Cougar Cells.
title: E-Assessment-Plattform für die grafische Modellierung
Creators: name: Ullrich, Meike
name: Pfeiffer, Peter
name: Schiefer, Gunther
name: Soyka, Chantal
name: Stottrop, Tobias
name: Striewe, Michael
name: Fettke, Peter
name: Loos, Peter
name: Oberweis, Andreas
name: Schaper, Niclas
Publisher: name: Gesellschaft für Informatik e.V.
Year: 2022
Subjects: subject: E-Assessment
subject: Modellierung
subject: UML
subject: BPMN
subject: EPK
subject: Petri-Netze

description: Im Projekt KEA-Mod wird eine E-Assessment-Plattform für Veranstaltungen auf dem Gebiet der grafischen Modellierung (z.B. UML, BPMN, EPK oder Petri-Netze) entwickelt. Die KEA-Mod-Plattform bietet der Zielgruppe von Dozierenden und Studierenden diverse Funktionen rund um die Erstellung und Bearbeitung von Modellierungsaufgaben. Mit einem integrierten Modellierungswerkzeug können Modelle verschiedener Modellierungssprachen eingegeben werden. Für diese Modelle kann dabei automatisiert individuelles Feedback generiert werden.
Projection based model order reduction methods for the estimation of vector-valued variables of interest
Creators: name: Zahm, Olivier
name: Billaud-Friess, Marie
name: Nouy, Anthony
Publisher: name: arXiv
Year: 2016
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 65J10, 35B30, 65D15, 65N15

description: We propose and compare goal-oriented projection based model order reduction methods for the estimation of vector-valued functionals of the solution of parameter-dependent equations. The first projection method is a generalization of the classical primal-dual method to the case of vector-valued variables of interest. We highlight the role played by three reduced spaces: the approximation space and the test space associated to the primal variable, and the approximation space associated to the dual variable. Then we propose a Petrov-Galerkin projection method based on a saddle point problem involving an approximation space for the primal variable and an approximation space for an auxiliary variable. A goal-oriented choice of the latter space, defined as the sum of two spaces, allows us to improve the approximation of the variable of interest compared to a primal-dual method using the same reduced spaces. Then, for both approaches, we derive computable error estimates for the approximations of the variable of interest and we propose greedy algorithms for the goal-oriented construction of reduced spaces. The performance of the algorithms are illustrated on numerical examples and compared to standard (non goal-oriented) algorithms.
title: Das VR-Labor-Klassenzimmer zur Professionalisierung von Lehramtsstudierenden der Chemie
Creators: name: Wiepke, Axel
name: Hildebrandt, Christina
name: Hagen, Noemi
name: Krüger, Anita Susann
name: Lucke, Ulrike
name: Banerji, Amitabh
Publisher: name: Gesellschaft für Informatik e.V.
Year: 2022
Subjects: subject: Virtual Reality
subject: Chemiedidaktik
subject: Simulation
subject: Klassenzimmer

description: Im Chemieunterricht können Situationen mit erhöhtem Gefahrenpotential entstehen. Daher ist es wichtig, Lehramtsstudierenden Gelegenheiten zu bieten, um sich auf solche Situationen vorzubereiten, ohne sich selbst oder die Lernenden in gefährliche Situationen zu bringen. Die Trainingsumgebung VR-Labor-Klassenzimmer bietet hierfür eine sichere Möglichkeit, um mit virtuellen Schülerinnen und Schülern ein Experiment mit dem Gasbrenner durchzuführen. Dieser Kurzbeitrag leitet relevante fach- und mediendidaktische Konzepte ab und beschreibt die entworfene Umsetzung in der Virtual Reality (VR). Dies umfasst einen teilautomatisierten Unterrichtsablauf auf Grundlage einer Baumstruktur, haptische Elemente der VR-Umgebung in Form der Möblierung sowie aus der Unterrichtspraxis abgeleitete, typische Verhaltensweisen der virtuellen Schülerinnen und Schüler. Der Beitrag stellt die Ergebnisse einer Pilotstudie vor und gibt einen Ausblick auf noch ausstehende Arbeiten.
title: Stability and Instability of Planar Layers of Smectic A Liquid Crystals
titleType: Other
Creators: name: Alsuhaimi, Omar Ameer
Publisher: name: University of Dundee
Year: 2021

description: We consider the mathematical modelling of smectic A liquid crystals using the continuum dynamic theory for smectic A liquid crystals that has been developed by Stewart [79]. We also examine biaxial nematic liquid crystals using the continuum theory of Leslie and co-workers [50,51] and the review by [80].

The Helfrich-Hurault transition is considered in this thesis to study the influence of the compression coefficient B0 when an electric field is applied. The molecular alignment described by the director n and the unit layer normal a of a smectic A sample is considered to be not coincident, unlike the classical smectic A theory where they coincide. Stability and instability in various situations with and without an electric field will be discussed. Finally, the dynamic continuum theory of biaxial nematic liquid crystals is an integral part of this thesis. This theory will be applied to incompressible biaxial nematic liquid crystals to study the linear stability and instability of a planar alignment sample of biaxial nematic under oscillatory shear flow.
Gaussian States Minimize the Output Entropy of the One-Mode Quantum Attenuator
Creators: name: De Palma, Giacomo
name: Trevisan, Dario
name: Giovannetti, Vittorio
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: Information Theory (cs.IT)
subject: Mathematical Physics (math-ph)
subject: Probability (math.PR)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: We prove that Gaussian thermal input states minimize the output von Neumann entropy of the one-mode Gaussian quantum-limited attenuator for fixed input entropy. The Gaussian quantum-limited attenuator models the attenuation of an electromagnetic signal in the quantum regime. The Shannon entropy of an attenuated real-valued classical signal is a simple function of the entropy of the original signal. A striking consequence of energy quantization is that the output von Neumann entropy of the quantum-limited attenuator is no more a function of the input entropy alone. The proof starts from the majorization result of De Palma et al., IEEE Trans. Inf. Theory 62, 2895 (2016), and is based on a new isoperimetric inequality. Our result implies that geometric input probability distributions minimize the output Shannon entropy of the thinning for fixed input entropy. Moreover, our result opens the way to the multimode generalization, that permits to determine both the triple trade-off region of the Gaussian quantum-limited attenuator and the classical capacity region of the Gaussian degraded quantum broadcast channel.
Sensorless PV Array Diagnostic Method for Residential PV Systems
Creators: name: Sera, D.
name: Spataru, S.
name: Mathe, L.
name: Kerekes, T.
name: Teodorescu, R.
Publisher: name: WIP
Year: 2011
Subjects: Components for PV Systems
Balance of System Components

description: 26th European Photovoltaic Solar Energy Conference and Exhibition; 3776-3782
description: This work proposes a temperature and irradiance sensorless diagnostic method suitable for small
residential PV installations, focusing on detection of partial shadows. The method works by detecting failures in
crystalline silicone PV arrays using concomitant monitoring of some of their key parameters such as series resistance,
fill factor, and equivalent thermal voltage. These parameters show different deviations from their normal values in
presence of a failure or disturbance (such as partial shadow) - or, changes in environmental conditions. Using this
information, it is possible to differentiate environmental effects from failures.
title: The Heb@AR App – Five Augmented Reality Trainings for Self-Directed Learning in Academic Midwifery Education
Creators: name: Blattgerste, Jonas
name: Vogel, Kristina
name: Lewa, Carmen
name: Willmeroth, Tabea
name: Joswig, Matthias
name: Schäfer, Thorsten
name: Bauer, Nicola H.
name: Bernloehr, Annette
name: Pfeiffer, Thies
Publisher: name: Gesellschaft für Informatik e.V.
Year: 2022
Subjects: subject: Midwifery
subject: Augmented Reality
subject: Learning
subject: Training
subject: Education
subject: App
subject: Smartphone

description: The academization of midwifery education entails novel challenges. To second the transition process, the Heb@AR App is an innovative Augmented Reality (AR) training application. It is currently being deployed for self-directed and curricular on-site learning in several midwifery degree programs in Germany. The aim is to strengthen students’ practical competencies, especially for emergency situations. Hereby, the Heb@AR App is available through the app store on handheld (Android & iOS) devices for free and currently offers five midwifery-specific training scenarios.
Quality control of laser welds based on the weld surface and the weld profile
Creators: name: Hartung, Julia
name: Jahn, Andreas
name: Heizmann, Michael
Publisher: name: KIT Scientific Publishing
Year: 2022
Subjects: Laser welding
hairpin
quality assurance
OCT
stacked dilated U-Net (SDU-Net)
3D reconstruction

description: 2D or 3D sensor technology can be used for data acquisition to monitor the weld quality during laser welding. Compared to a 2D camera image, the 3D height data contains additional relevant information for quality inspection. However, the disadvantages are system complexity, higher costs, and longer acquisition times. Therefore, we compare two image-based methods with the quality assessment based on height data. The first method uses feature vectors of coaxial acquired grayscale images. The significant advantage is that a camera is often integrated into the laser system, so no additional hardware is required. In the second approach, we use an AI-based single-view 3D reconstruction method. The height profile is calculated from a camera image and used for further quality assessment. Thus, we combine the advantages of 2D data acquisition with higher accuracy in evaluating 3D data. In this paper, we analyze a dataset of welded hairpins with different defect types and compare the quality assessment using the height data acquired with OCT, the feature vectors from the camera images, and the reconstructed height data.
Invariant solutions to the Strominger system and the heterotic equations of motion
Creators: name: Otal, A.
name: Ugarte, L.
name: Villacampa, R.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Differential Geometry (math.DG)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: We construct many new invariant solutions to the Strominger system with respect to a 2-parameter family of metric connections $\nabla^{\varepsilon,ρ}$ in the anomaly cancellation equation. The ansatz $\nabla^{\varepsilon,ρ}$ is a natural extension of the canonical 1-parameter family of Hermitian connections found by Gauduchon, as one recovers the Chern connection $\nabla^{c}$ for $({\varepsilon,ρ})=(0,\frac12)$, and the Bismut connection $\nabla^{+}$ for $({\varepsilon,ρ})=(\frac12,0)$. In particular, explicit invariant solutions to the Strominger system with respect to the Chern connection, with non-flat instanton and positive $α'$ are obtained. Furthermore, we give invariant solutions to the heterotic equations of motion with respect to the Bismut connection. Our solutions live on three different compact non-Kähler homogeneous spaces, obtained as the quotient by a lattice of maximal rank of a nilpotent Lie group, the semisimple group SL(2,$\mathbb{C}$) and a solvable Lie group. To our knowledge, these are the only known invariant solutions to the heterotic equations of motion, and we conjecture that there is no other such homogeneous space admitting an invariant solution to the heterotic equations of motion with respect to a connection in the ansatz $\nabla^{\varepsilon,ρ}$.
description: 27 pages, 3 figures
Χαρακτηριστικά συσκευασιών από πολυστρωματικά υλικά και ανακυκλωσιμότητά τους
Creators: name: Καούλλα, Άννα Γεωργίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2023
Subjects: Συσκευασία
Πολυστρωματικά υλικά
Ανακυκλωσιμότητα
Packaging
Multilayer packaging
Recyclability

description: Ο σκοπός της έρευνας αυτής είναι η μελέτη και ο χαρακτηρισμός πολυστρωματικών συσκευασιών με την αποκόλληση των σύνθετων συσκευασιών και αποστρωματοποίηση με τη χρήση κατάλληλων διαλυτών. Στόχοι της παρούσας διπλωματικής εργασίας είναι: α) Χαρακτηρισμός πολυστρωματικών φιλμ με ηλεκτρονικό μικροσκόπιο σάρωσης, SEM, β) Αποστρωματοποίηση φιλμ με οργανικούς διαλύτες, γ) Απομόνωση στρωμάτων και ταυτοποίηση με φασματοσκοπία υπέρυθρου, FTIR και διαφορική θερμιδομετρία σάρωσης, DSC. Οι πολυστρωματικές συσκευασίες που επιλέχθηκαν είναι σοκολάτας, από πατατάκια, καπνού και κατεψυγμένων προϊόντων ενώ οι διαλύτες για την αποκόλληση μεθανόλη, αιθανόλη, ακετόνη, οξικό οξύ, διαιθυλαιθέρας, τολουόλιο και διμεθυλοφορμαμίδιο. Οι διαλύτες αυτοί επιλέχθηκαν λόγω των λιγότερων δυσμενών επιπτώσεων που έχουν στο περιβάλλον και την ανθρώπινη υγεία. Λόγω την διαφορετικών χαρακτηριστικών κάθε πολυστρωματικού φιλμ και διαλύτη τα αποτελέσματα κάθε πειράματος διαφέρουν.
description: The purpose of this research is the study and characterization of multi-layer packages by delamination of multi-layered packaging using suitable solvents. The main objectives of the present thesis include: a) Characterization of multilayer films by scanning electron microscopy, SEM, b) Delamination of films with organic solvents, c) Isolation of layers and identification by infrared spectroscopy, FTIR and differential scanning calorimetry, DSC. The multilayer packages were chosen are chocolate, crisps, tobacco and frozen products, while the solvents for delamination are methanol, ethanol, acetone, acetic acid, diethyl ether, toluene and dimethylformamide. These solvents were selected due to their less impact on environment and human health. Due to the different characteristics of each multilayer film and solvent, the results of each experiment differ.
Intensity of Solar Radiation Measuring by Pyranometer
Creators: name: Stojan, R.
name: Vanek, J.
name: Bobalík, L.
Publisher: name: WIP
Year: 2011
Subjects: Components for PV Systems
Balance of System Components

description: 26th European Photovoltaic Solar Energy Conference and Exhibition; 3783-3785
description: This paper offers a proposal and a solut ion of an equipment for measuring of solar radiat ion intensity.
It lists reasons why to measure intensity, contains fundamentals of photovoltaics, deals with how elect ric energy is
obtained from a solar radiat ion and how the intensity of solar radiat ion affects the power output of photovoltaic
devices.
The project also deals with prime facts about 4 – 20 mA current loop and serial RS-232 communicat ion. Proposed
design is based on usage of the pyranometer CMP 21, a PIC microcontroller and a current loop to create a device
which gathers data and t ransfers them to a PC for further processing.
System for measuring intensity of solar radiat ion consists of pyranometer, t ransmitter loop ad PC software for
analysis of measured data. There is a new measuring system that is possible to analysis intensity of solar radiat ion
data. Informat ion of intensity is collected over t ime. This fact can by used for analysis dependence of the intensity
solar radiat ion on the efficiency of solar cells.
title: Findoo – Interoperable E-Learning Semantic Search and Content Authoring Assistance
Creators: name: Streicher, Alexander
name: Schwarz, Simon
Publisher: name: Gesellschaft für Informatik e.V.
Year: 2022
Subjects: subject: e-Learning
subject: Search Engine
subject: Information Retrieval
subject: Interoperability
subject: Assistance System

description: Search engine assistance systems can be of great use in the creation and curation of e-learning content. However, conventional crawling methods are typically limited in Learning Management Systems (LMS) due to technical barriers such as authentication or proprietary data formats. This article presents the concept and implementation of an e-learning search engine called “Findoo” based on a Learning Tools Interoperability (LTI) deep web crawler, combined with an assistance tool for content curation, e.g., restructuring of learning objects. Our concept includes robust crawling as well as assistance functions such as a semantic search and content recommendations. The system is designed with a modular architecture which makes fine-tuning to future use cases possible. Experimental technical verification results indicate that the system is well suited for domain-specific information retrieval.
Distributed MPPT Power Converters for Multi-Terminal Module
Creators: name: Petibon, S.
name: Estibals, B.
name: El Basri, Y.
name: Francke, L.
name: Vermeersch, M.
name: Alonso, C.
Publisher: name: WIP
Year: 2011
Subjects: Components for PV Systems
Balance of System Components

description: 26th European Photovoltaic Solar Energy Conference and Exhibition; 3683-3689
description: This paper presents an innovative Multi-Terminal Module structure (MTM) combined with distributed
photovoltaic power management architecture. The MTM consists of a four-terminal tandem solar cell structure with electrical
decoupling while maintaining optical coupling. In those conditions, the constraint of current matching design usually needed
in tandem structure is not necessary. This new degree of freedom allows us to imagine different kinds of interconnections and
architectures of power management. Electrical simulations and models of the MTM with its different possible
interconnections are presented. Experimental results in real conditions were done in order to compare the MTM with earlier
architectures. An evaluation of the benefit of distributing power management structures in MTM concepts is done.
title: Lernende an die Kryptologie heranführen: digital und haptisch zugleich – Praxisbericht über den Online-Adventskalender „Krypto im Advent“
Creators: name: Borys, Thomas
name: Fox, Dirk
Publisher: name: Gesellschaft für Informatik e.V.
Year: 2022
Subjects: subject: Kryptologie
subject: Online-Lernen
subject: Adventskalender
subject: Digital Escape Rooms
subject: Digital Storytelling Learning

description: Die Kryptologie ist eine sehr alte Wissenschaft und war bis vor wenigen Jahrzehnten nur für Regierungen und Geheimdienste von Interesse. Heute findet sich die Kryptologie fast überall in unserem Leben. Trotz ihrer immensen Bedeutung für unsere moderne Kommunikations- und Informationstechnologie, derer sich fast jeder bedient, ist das Verständnis über die Funktionsweise, ihre Möglichkeiten und Grenzen nach wie vor wenig verbreitet. In diesem Praxisbericht wird gezeigt, wie man auf spielerische Weise Lernenden insbesondere der Primar- und Sekundarstufe I die fundamentalen Methoden der Kryptologie nahebringen kann. Dazu wurde der Online-Adventskalender „Krypto im Advent“ (https://krypto-im-advent.de) entwickelt. Der besondere Ansatz dieser Webseite besteht darin, digital und haptisch zugleich vorzugehen, d. h. es werden digitale Vermittlungsformate dazu verwendet, Lernende haptisch an eine kognitive Wissenschaft - hier die Kryptologie - heranzuführen. In diesem Beitrag werden die Ziele, die Kernelemente und ein Überblick zu den Teilnehmenden, sowie deren Lösungserfolge vorgestellt.
Comparison of SnO2:F Based Transparent Conductive Oxides for Use in a-Si:H/µc-Si:H Solar Cells
Creators: name: Ulrich, S.
name: Dewald, W.
name: Szyszka, B.
Publisher: name: WIP-Munich
Year: 2009
Subjects: Thin Films Solar Cells
Amorphous and Microcrystalline Silicon Solar Cells

description: 24th European Photovoltaic Solar Energy Conference, 21-25 September 2009, Hamburg, Germany; 2814-2816
description: SnO2:F based transparent conductive oxides (TCOs) are widely used as electrodes for a-Si:H/μc-Si:H
tandem solar cells. For these cell types light scattering at the rough TCO/cells interface is beneficial for light
trapping and subsequent high cell performance. A set of commercially available SnO2:F samples on glass with
different surface morphologies was investigated. AFM measurements were performed to characterize the surface
morphology. A statistical evaluation using the mean square height deviation function was carried out to classify the
samples in terms of roughness, lateral correlation length and hurst exponent. The lateral correlation length is
related to the lateral structure size which is relevant for light scattering properties. These properties were also
investigated using photometric measurements of diffuse and hemispherical transmission and angle resolved light
scattering (ARS) measurements.
UNESCO-LIBER hands-on workshop on adopting, adapting and taking advantage of the open science Recommendation toolkit
Creators: name: Swiatek Cassafieres, Cécile
name: Roche, Julien
name: Pronk, Martine
name: Persic, Ana
Publisher: name: Zenodo
Year: 2023
Subjects: Skills, Training, Open Science

description: LIBER and UNESCO propose a hands-on workshop about Discovering, adopting, adapting and taking advantage of the open science Recommendation toolkit for implementing open science practices and services in your institution. This workshop aims to: bring together and empower open science communities and services: this is the very spirit of this workshop where people exchange ideas and build their pathways to implementing the UNESCO Recommendation on Open Science Principles, Values and 7 Areas of action identify common practices related to open science: use and share practices under the framework of the international UNESCO recommendation on Open Science, discover the example of the LIBER Strategy regarding Open Science, small groups of discussion and wrap-ups to share outputs, challenges and words of wisdom see what the best synergies are to deliver and operate services that work for many : sharing experience and reflecting on pathways for action is an effective way for fostering and enhancing synergies The key learning outcomes are: discovering and adapting the UNESCO Open Science Toolkit discovering the LIBER Strategy regarding Open Science and taking possible inspiration from it taking inspiration from the shared open science roadmap or strategy by other participants taking this opportunity to start developing/adapting the framework of OS skills and competencies for and with UNESCO drafting or gathering elements for initiating, developing or enhancing an institutional or collaborative strategy for concrete action, training and capacity building
Thermodynamic and spectral properties of adiabatic Peierls chains
Creators: name: Weber, Manuel
name: Assaad, Fakher F.
name: Hohenadler, Martin
Publisher: name: arXiv
Year: 2016
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We present exact numerical results for the effects of thermal fluctuations on the experimentally relevant thermodynamic and spectral properties of Peierls chains. To this end, a combination of classical Monte Carlo sampling and exact diagonalization is used to study adiabatic half-filled Holstein and Su-Schrieffer-Heeger models. The classical nature of the lattice displacements in combination with parallel tempering permit simulations on large system sizes and a direct calculation of spectral functions in the frequency domain. Most notably, the long-range order and the associated Peierls gap give rise to a distinct low-temperature peak in the specific heat. The closing of the gap and suppression of order by thermal fluctuations involves in-gap excitations in the form of soliton-antisoliton pairs, and is also reflected in the dynamic density and bond structure factors as well as in the optical conductivity. We compare our data to the widely used mean-field approximation, and highlight relations to symmetry-protected topological phases and disorder problems.
description: 12 pages, 11 figures, final version
title: Physik durch Informatik
Creators: name: Giel, Dominik
Publisher: name: Gesellschaft für Informatik e.V.
Year: 2022
Subjects: subject: Selbsttests
subject: Lernmanagementsystem
subject: Design Based Research
subject: Physikdidaktik

description: Selbsttests in Lernmanagementsystemen (LMS) ermöglichen es Studierenden, den eigenen Lernfortschritt einzuschätzen. Das didaktische Konzept Physik durch Informatik (PDI) ist charakterisiert durch die Nutzung einer Programmiersprache zur Lösungseingabe bei Mathematik und Physik-Aufgaben. Im Gegensatz zur Lösungseingabe durch Zahlenwerte oder im Antwort-Auswahl-Verfahren erfordert die Implementierung einer Lösung in einer Programmiersprache eine höhere Kompetenzstufe.
Quantum state transfer through time reversal of an optical channel
Creators: name: Hush, M. R.
name: Bentley, C. D. B.
name: Ahlefeldt, R. L.
name: James, M. R.
name: Sellars, M. J.
name: Ugrinovskii, V.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Rare earth ions have exceptionally long coherence times, making them an excellent candidate for quantum information processing. A key part of this processing is quantum state transfer. We show that perfect state transfer can be achieved by time reversing the intermediate quantum channel, and suggest using a gradient echo memory (GEM) to perform this time reversal. We propose an experiment with rare earth ions to verify these predictions, where an emitter and receiver crystal are connected with an optical channel passed through a GEM. We investigate the affect experimental imperfections and collective dynamics have on the state transfer process. We demonstrate superrandiant effects can enhance coupling into the optical channel and improve the transfer fidelity. We lastly discuss how our results apply to state transfer of entangled states.
description: 14 pages, 7 figures
Exploration of ISS Transport Vehicles Solar Arrays Usage as Receivers of Infrared Laser Radiation
Creators: name: Zayats, O.
name: Matsak, I.
name: Tugaenko, V.
name: Bogushevskaya, V.
name: Maslyakov, Y.
name: Nikonov, A.
name: Zhalnin, B.
Publisher: name: WIP
Year: 2011
Subjects: Advanced Photovoltaics : New Concepts and Ultra-High Efficiency
Solar Cells, Modules and PV Systems for Space Applications

description: 26th European Photovoltaic Solar Energy Conference and Exhibition; 774-777
description: Features of interaction between monochromatic radiation (MCR) and photoelectric converters
(PVC) are considered. The possible energy electric transmission in space to solar batteries (SB) of spacecrafts
(SC) along the channel of laser infrared (IR) radiation is demonstrated. The silicon and arsenide – gallium SB
current-voltage characteristics under IR laser radiation are obtained. The effectiveness of solar batteries for this
type of energy transmission is estimated. The influence illumination irregularity to the efficiency of solar battery
is considered in the investigation of the facility of making receiver battery for the WET system. Possible ways to
optimize the space SB construction for receiving the laser IR emission energy are examined.
title: Re-thinking Transformer based educational resource recommendation engines for higher education
Creators: name: Schrumpf, Johannes
name: Thelen, Tobias
Publisher: name: Gesellschaft für Informatik e.V.
Year: 2022

description: Digital Study Assistant (DSA) systems for higher education seek to support learners in identifying, structuring and pursuing their personal educational goals. One strategy to achieve this is to galvanize learner interest in engaging with educational resource beyond the scope of their known, pre-determined curriculum. For this purpose, DSA systems may provide a recommendation engine that matches learner interests in natural language to an educational resource covering the topic of interest. To offer a rich assortment of educational resources, these resources need to be fetched from multiple sources such as MOOC and OER repositories or from the learning management system of a local University. In a previous publication, we have presented SidBERT, a BERT-based natural language processing neural network for educational resource classification and recommendation which has been in active use in a prototypical Digital Study Assistant system. This work seeks to follow up on the SidBERT architecture, by introducing an evolution of SidBERT, SemBERT, that is capable of comparing educational resources on a more fine-grained level, thereby addressing multiple shortcomings of the SidBERT architecture and its application within the DSA software. We present network architecture, training parameters and evaluate SemBERT on two datasets. We compare SemBERT to SidBERT and discuss the implications of SemBERT for DSA systems at large.
Strong convergence of full-discrete nonlinearity-truncated accelerated exponential Euler-type approximations for stochastic Kuramoto-Sivashinsky equations
Creators: name: Hutzenthaler, Martin
name: Jentzen, Arnulf
name: Salimova, Diyora
Publisher: name: arXiv
Year: 2016
Subjects: subject: Probability (math.PR)
subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: This article introduces and analyzes a new explicit, easily implementable, and full discrete accelerated exponential Euler-type approximation scheme for additive space-time white noise driven stochastic partial differential equations (SPDEs) with possibly non-globally monotone nonlinearities such as stochastic Kuramoto-Sivashinsky equations. The main result of this article proves that the proposed approximation scheme converges strongly and numerically weakly to the solution process of such an SPDE. Key ingredients in the proof of our convergence result are a suitable generalized coercivity-type condition, the specific design of the accelerated exponential Euler-type approximation scheme, and an application of Fernique's theorem.
description: 40 pages
HoloTouch: Interacting with Mixed Reality Visualizations Through Smartphone Proxies
Creators: name: Chulpongsatorn, Neil
name: Willett, Wesley
name: Suzuki, Ryo
Publisher: name: arXiv
Year: 2023
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: We contribute interaction techniques for augmenting mixed reality (MR) visualizations with smartphone proxies. By combining head-mounted displays (HMDs) with mobile touchscreens, we can augment low-resolution holographic 3D charts with precise touch input, haptics feedback, high-resolution 2D graphics, and physical manipulation. Our approach aims to complement both MR and physical visualizations. Most current MR visualizations suffer from unreliable tracking, low visual resolution, and imprecise input. Data physicalizations on the other hand, although allowing for natural physical manipulation, are limited in dynamic and interactive modification. We demonstrate how mobile devices such as smartphones or tablets can serve as physical proxies for MR data interactions, creating dynamic visualizations that support precise manipulation and rich input and output. We describe 6 interaction techniques that leverage the combined physicality, sensing, and output capabilities of HMDs and smartphones, and demonstrate those interactions via a prototype system. Based on an evaluation, we outline opportunities for combining the advantages of both MR and physical charts.
description: CHI 2023 Late-Breaking Work
title: LIVE-Interaktion statt Videomaterial bei der Sensibilisierung für Inklusion und Computerzugänglichkeit!
Creators: name: Akao, Kensuke
Publisher: name: Gesellschaft für Informatik e.V.
Year: 2022
Subjects: subject: E-Lecture
subject: (Lehramt) Informatik
subject: Inklusion
subject: Computerzugänglichkeit

description: Seitdem die Inklusion als internationales Ziel festgelegt wurde, ist mehr als ein Jahrzehnt vergangen. Als künftige Informatiker/in beziehungsweise Informatiklehrkräfte sollten jene die Fähigkeit besitzen, die Barrieren für behinderte Menschen in den Informationstechnologien oder den Informatikbildungen abzubauen. Deshalb ist die Sensibilisierungsaktivität mithilfe von Erfahrungsberichten blinder Menschen ein besonderes Merkmal unserer Lehrveranstaltungen. Allerdings zwang uns Covid-19 die Umsetzung dieser Sensibilisierungsphase als Online-Lehrveranstaltung durchzuführen. Unser Ansatz ist ein Online-Austausch mit den Betroffenen im E-Lecture statt Lernen mit Videomaterial. Unsere empirischen Erfahrungen zeigen deutlich, dass die Teilnehmenden diesen Ansatz als wertvoll empfanden.
Effects of the Hydrogen Dilution in a-Si:H Film on the Crystallization and Bandgap Shift
Creators: name: Jeong, H.
name: Im, J.-S.
name: Lee, J.-H.
name: Boo, S.
Publisher: name: WIP-Munich
Year: 2009
Subjects: Thin Films Solar Cells
Amorphous and Microcrystalline Silicon Solar Cells

description: 24th European Photovoltaic Solar Energy Conference, 21-25 September 2009, Hamburg, Germany; 2754-2756
description: We investigate effects of the hydrogen dilution in a-Si:H film on the crystallization and absoption
property. Crystallization of the a-Si:H films from amorphous to several tens nanometer-sized crystal state is observed
by increase of hydrogen dilution ratio using PECVD. Crystallization of the a-Si:H films from amorphous to microcrystal
occurred very rapidly in a very narrow range of silane concentration(S.C.) starting with S.C.=~1.8%.
Protocrystal silicon (pc-Si:H) is only obtained fractionally within the a-Si:H matrix. It could be assumed that the
volume fraction of the protocrystalline silicon is higher in the range of SC=1.6~1.8% than in the other region where
amorphous or micro-crystalline phases are dominat. The a-Si:H films with SC=1.6%~1.4% have the crystal volume
fraction 73%~80% but still contain the amorphous, proto- or nano- crystalline silicon in the rest volume so that they
show some different characteristics with other micro-crystalline silicon. As an application the highly diluted
amorphous film is used as a buffer layer of the micro-crystalline silicon solar cell. The cell efficiency is increased
due to the enhancement of the electrical properties compared to the cell without the buffer layer.
Exploring quantum thermodynamics with NMR
Creators: name: Vieira, Carlos H. S.
name: de Oliveira, Jefferson L. D.
name: Santos, Jonas F. G.
name: Dieguez, Pedro R.
name: Serra, Roberto M.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Quantum thermodynamics seeks to extend non-equilibrium stochastic thermodynamics to small quantum systems where non-classical features are essential to its description. Such a research area has recently provided meaningful theoretical and experimental advances by exploring the wealth and the power of quantum features along with informational aspects of a system's thermodynamics. The relevance of such investigations is related to the fact that quantum technological devices are currently at the forefront of science and engineering applications. This short review article provides an overview of some concepts in quantum thermodynamics highlighting test-of-principles experiments using nuclear magnetic resonance techniques.
title: Has incorporation of the European Convention of Human Rights secured better judicial enforcement of human rights in England and Wales?
titleType: Other
Creators: name: White, Samuel
Publisher: name: University of Dundee
Year: 2021

description: This thesis addresses the question: Has incorporation of the European Convention of Human Rights secured better judicial enforcement of human rights in England and Wales? Using the example of the European Convention on Human Rights (ECHR), it asserts that for human rights instruments to achieve a high level of human rights protection for individuals in England and Wales, such instruments need to be incorporated. In doing so it makes use of a comparison of the English and Welsh courts’ experience with incorporated and unincorporated human rights instruments.

It compares the ECHR, an example of an incorporated human rights instrument, and the International Covenant on Civil and Political Rights (ICCPR), an example of an unincorporated human rights instrument. It examines three periods of time to make direct comparisons of the enforcement of rights of two legal instruments containing similar rights in the courts England and Wales (prior to 1953, between 1953 and 1998, and between 1998 and 2018).

In each of these periods, this thesis carries out a doctrinal analysis of what the law on human rights in England and Wales was or is, providing clear explanation of how the law should operate in respect of individual rights. To complement this, quantitative socio-legal analysis shows what actually happened during this period: the vast increase in reference to international human rights law but the divergence between citations of the ECHR and ICCPR.

This thesis demonstrates the extent to which the ICCPR has not been used by the courts, compared with the increasing use of the ECHR. Indeed, between 1998 and 2018 the ECHR was referred to by courts 39 times more than the ICCPR. Although the increase in reference to the ICCPR after 1998 illustrates a growing awareness of, and willingness to engage with, international human rights law in domestic courts, the extent to which it lagged behind the ECHR serves to highlight the difference incorporation makes to the influence of such instruments.

This thesis concludes that incorporation of the ECHR secured better judicial enforcement of human rights in England and Wales.
Role of Hydrogen Dilution in Silane on Optical Properties of ECR-PECVD Deposited a-Si:H Films
Creators: name: Chatterjee, S.
name: Tuzun, Ö.
name: Prathap, P.
name: Roques, S.
name: Slaoui, A.
Publisher: name: WIP-Munich
Year: 2009
Subjects: Thin Films Solar Cells
Amorphous and Microcrystalline Silicon Solar Cells

description: 24th European Photovoltaic Solar Energy Conference, 21-25 September 2009, Hamburg, Germany; 2821-2823
description: Thin films of a-Si:H were deposited on glass substrates using hydrogen diluted SiH4 with different
concentrations by electron cyclotron resonance plasma-enhanced chemical vapour deposition (ECR-PECVD)
method. Influence of atomic H2 concentration on deposition kinetics and optical properties of a-Si:H layers were
studied using various spectrophotometric (e.g. UV-Vis-IR spectroscopy, Spectroscopic ellipsometry and FT-IR
spectrometry) measurements. The linear decrement of deposition rate with H2 dilution ratio was observed. The
refractive index is estimated as a function of H2 dilution ratio. The H2 content in the layers were obtained from FT-IR
spectra by integrating the stretching modes to monohydride (Si-H) and polyhydride (Si-H2) bonds at absorption peaks
2000 and 2100 cm-1, respectively, which showed a linear increment with H2 dilution ratio. The a-Si:H films prepared
from hydrogen diluted silane were used as a precursor in aluminium induced crystallization (AIC) process and
studied the role of hydrogen on AIC process, preliminarily. The results were reported and discussed in detail.
Evaluation of the Innovance D-DIMER analytical performance
Creators: name: Herak, Desiree Coen
name: Milos, Marija
name: Zadro, Renata
Publisher: name: Kooperation de Gruyter
Year: 2009

description: Background: Widespread use of D-dimer in recent years has led to the development of a number of new fully automated quantitative D-dimer assays. Methods: We evaluated the analytical performance of the particle-enhanced immunoturbidimetric assay Innovance D-DIMER (Siemens Medical Solutions) on the Behring Coagulation System (BCS) analyzer. Results: Within-run coefficients of variation (CVs) for samples with low, borderline, slightly, and extremely increased D-dimer concentrations were 2.1%–5.5%, whereas between-run CVs for control samples with low and extremely increased D-dimer were 5.5%–8.4%. The assay exhibited good linearity in the working range between 0.17 mg/L and 5.45 mg/L fibrinogen equivalent units (FEU), with the lower limit of detection of 0.099 mg/L FEU. The upper reference value determined in 40 plasma samples from healthy volunteers was 0.495 mg/L FEU. The results obtained in 457 fresh plasma samples were compared with results obtained with VIDAS D-Dimer Exclusion. Passing and Bablok regression analysis demonstrated highly significant correlation (y=1.370x–0.108, r=0.952, p<0.001). Bland and Altman difference plots demonstrated slightly higher results obtained with Innovance D-DIMER that was more pronounced with increasing values. Very good agreement between both assays was observed (κ=0.860; 95% confidence interval (CI), 0.811–0.908). Conclusions: This study demonstrates that Innovance D-DIMER fulfills all analytical requirements for daily routine use. Clin Chem Lab Med 2009;47:945–51.