cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Irreducible Virasoro modules from tensor products
Creators: name: Tan, Haijun
name: Zhao, Kaiming
Publisher: name: arXiv
Year: 2013
Subjects: subject: Representation Theory (math.RT)
subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics

description: In this paper, we obtain a class of irreducible Virasoro modules by taking tensor products of the irreducible Virasoro modules $Ω(λ,b)$ defined in [LZ], with irreducible highest weight modules $V(θ,h)$ or with irreducible Virasoro modules Ind$_θ(N)$ defined in [MZ2]. We determine the necessary and sufficient conditions for two such irreducible tensor products to be isomorphic. Then we prove that the tensor product of $Ω(λ,b)$ with a classical Whittaker module is isomorphic to the module $\mathrm{Ind}_{θ,λ}(\mathbb{C_\mathbf{m}})$ defined in [MW]. As a by-product we obtain the necessary and sufficient conditions for the module $\mathrm{Ind}_{θ, λ}(\mathbb{C_\mathbf{m}})$ to be irreducible. We also generalize the module $\mathrm{Ind}_{θ, λ}(\mathbb{C_\mathbf{m}})$ to $\mathrm{Ind}_{θ,λ}(\mathcal{B}^{(n)}_{\mathbf{s}})$ for any non-negative integer $ n$ and use the above results to completely determine when the modules $\mathrm{Ind}_{θ,λ}(\mathcal{B}^{(n)}_{\mathbf{s}})$ are irreducible. The submodules of $\mathrm{Ind}_{θ,λ}(\mathcal{B}^{(n)}_{\mathbf{s}})$ are studied and an open problem in [GLZ] is solved. Feigin-Fuchs' Theorem on singular vectors of Verma modules over the Virasoro algebra is crucial to our proofs in this paper.
description: 17 Pages
Dynamical Structure Factor of Fulde-Ferrell-Larkin-Ovchinnikov Superconductors
Creators: name: Dutta, Arghya
name: Bhattacharjee, Jayanta K.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: Superconductor with a spatially-modulated order parameter is known as Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) superconductor. Using the time-dependent Ginzburg-Landau (TDGL) formalism we have theoretically studied the temporal behaviour of the equal-time correlation function, or the structure factor, of a FFLO superconductor following a sudden quench from the unpaired, or normal, state to the FFLO state. We find that quenching into the ordered FFLO phase can reveal the existence of a line in the mean-field phase diagram which cannot be accessed by static properties.
description: 2 pages, Poster presented at 57TH DAE SOLID STATE PHYSICS SYMPOSIUM, 2012. Mainly based on arXiv:1210.2205
Coupling of a High-Resolution Ambient Pressure Drift Tube Ion Mobility Spectrometer to a Commercial Time-of-flight Mass Spectrometer
Creators: name: Allers, Maria
name: Timoumi, Laila
name: Schlottmann, Florian
name: Zimmermann, Stefan
Publisher: name: Cham : Springer Nature Switzerland AG
Year: 2018
Subjects: subject: High-resolution ion mobility spectrometer
subject: Gated IMS-MS interface
subject: BTX
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau::621 | Angewandte Physik::621,3 | Elektrotechnik, Elektronik

description: Ion mobility spectrometry provides information about molecular structures of ions. Hence, high resolving power allows separation of isomers which is of major interest in several applications. In this work, we couple our high-resolution ion mobility spectrometer (IMS) with a resolving power of Rp = 100 to a time-of-flight mass spectrometer (TOF-MS). Besides, the benefit of an increased resolving power such an IMS-MS also helps analyzing and understanding the ionization processes in IMS. Usually, the coupling between IMS and TOF-MS is realized by synchronizing data acquisition of the IMS and MS resulting in two-dimensional data containing ion mobility and mass spectra. However, due to peak widths of less than 100 μs in our high-resolution IMS, this technique is not practicable due to significant peak broadening during the ion transfer into the MS and an insufficient data acquisition rate of the MS. Thus, a novel but simple interface between the IMS and MS has been designed which minimizes ion losses, allows recording of ion mobility at full IMS resolving power, and enables a shuttered transmission of ions into the MS. The interface is realized by replacing the Faraday plate used in IMS by a Faraday grid that is shielded by two additional aperture grids. For demonstration, positive product ions of benzene, toluene, and m-xylene in air are investigated. The IMS is equipped with a radioactive 3H source. Besides the well-known product ions M+ and M·NO+, a dimer ion is also observed for benzene and toluene, consisting of two molecules and three further hydrogen atoms. The final publication is available at Springer via https://doi.org/10.1007/s13361-018-2045-4.
A 3D measuring endoscope for hand-guided operation
Creators: name: Matthias, Steffen
name: Kästner, Markus
name: Reithmeier, Eduard
Publisher: name: London : IOP
Year: 2018
Subjects: subject: Endoscope
subject: Borescope
subject: SLAM
subject: Measurement
subject: Tracking
subject: Structured light
subject: Motion
subject: Endoskopie
subject: Messtechnik
subject: Streifenprojektion
subject: Dewey Decimal Classification::600 | Technik

description: Optical measuring devices are widely used in industrial production and maintenance processes. With increasing integration, the accessibility of functional elements inside machines is limited for measuring devices. In order to provide a new measurement tool for these applications, the design of an endoscopic 3D sensor based on the structured light principle is presented. Application specific sensor heads are introduced, with diameters down to 8 mm attached to endoscopes with a length of 1 m. The sensor features a flexible pattern generator and a camera, allowing for dynamic reconfiguration of structured illumination patterns. Based on a brief comparison of existing light coding approaches, two different measuring modes for the sensor are described. The first measuring mode uses conventional phase-shift sequences in order to achieve highly accurate measurements under controlled conditions. The second measuring mode uses a new interleaved encoding approach for phase-shift patterns, which enables robust measurements even in the presence of relative motion between object and sensor. An example for this type of motion is the movement of the endoscope tip by hand. Using the proposed sequence design, the 3D acquisition rate is identical to the capture rate of the camera, which amounts to a maximum of 180 Hz in the current hardware configuration of the measuring endoscope. In combination with a registration and merging algorithm, consecutive measurements are automatically combined, enabling the measurement of large surfaces. Moreover, the approach is capable of estimating the relative location and orientation of the endoscope tip using odometry based on depth data. The performance of the sensor in both measuring modes is evaluated on the basis of measurements of reference objects. Furthermore, the results of a hand-held measurement of a reference standard are shown.
Graduiertenkolleg beantragen
Creators: name: Meyer, Anneke
Publisher: name: Berlin : DUZ Verlags- und Medienhaus GmbH
Year: 2017
Subjects: subject: Graduiertenkolleg
subject: Dewey Decimal Classification::300 | Sozialwissenschaften, Soziologie, Anthropologie::370 | Erziehung, Schul- und Bildungswesen

description: Ein Graduiertenkolleg bei der Deutschen Forschungsgemeinschaft (DFG) zu beantragen, umfasst mehr als das Schreiben eines Antrags. So muss unter anderem die Rolle der Sprecherin oder des Sprechers aktiv ausgefüllt werden. Worauf Sie dabei unbedingt achten sollten, erfahren Sie auf den folgenden Seiten.
Energy band modulation of GaAs/Al0.26Ga0.74As quantum well in 3D self-assembled nanomembranes
Creators: name: Zhang, Fei
name: Huang, GaoShang
name: Nie, XiaoFei
name: Cao, Xin
name: Ma, Zhe
name: Ding, Fei
name: Di, ZengFeng
name: Zhen, HongLou
name: Mei, YongFeng
Publisher: name: Amsterdam : Elsevier
Year: 2019
Subjects: subject: Quantum well
subject: Nanomembrane
subject: Energy band
subject: Strain
subject: Stark effect
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: In this study, we investigate the modulation of energy band in 3D self-assembled nanomembranes containing GaAs/Al0.26Ga0.74As quantum wells (QWs). Photoluminescence (PL) characterizations demonstrate that the self-assembled structures have different optical transition properties and the modulation of the energy band is thus realized. Detailed spectral analyses disclose that the small strain change in structures with different curvatures cannot cause remarkable change in energy bands in Al0.26Ga0.74As layer. On the other hand, the optical transitions of GaAs QW layer is influenced by the strain evolution in term of light emission intensity. We also find the first order Stark effect in rolled-up nanomembrane with diameter of 150 μm, which is closely connected with the coupling effect between the deformation potential and the piezoelectric potential. Our work may pave a way for the fabrication of high performance rolled-QW infrared photo-detectors.
Angle-Resolved Photoemission from Cuprates with Static Stripes
Creators: name: Valla, T.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: 25 years after discovery of high-temperature superconductivity (HTSC) in La$_{2-x}$Ba$_x$CuO$_4$ (LBCO), the HTSC continues to pose some of the biggest challenges in materials science. Cuprates are fundamentally different from conventional superconductors in that the metallic conductivity and superconductivity are induced by doping carriers into an antiferromagnetically ordered correlated insulator. In such systems, the normal state is expected to be quite different from a Landau-Fermi liquid - the basis for the conventional BCS theory of superconductivity. The situation is additionally complicated by the fact that cuprates are susceptible to charge/spin ordering tendencies, especially in the low-doping regime. The role of such tendencies on the phenomenon of superconductivity is still not completely clear. Here, we present studies of the electronic structure in cuprates where the superconductivity is strongly suppressed as static spin and charge orders or stripes develop near the doping level of $x =1/8$ and outside of the superconducting dome, for $x<0.055$. We discuss the relationship between the stripes, superconductivity, pseudogap and the observed electronic excitations in these materials.
description: 8 pages, 13 figures. arXiv admin note: substantial text overlap with arXiv:cond-mat/0612672
Der VLBAI-Teststand : Ein Fallturm für Atome
Creators: name: Rasel, Ernst M.
name: Schlippert, Dennis
name: Wodey, Etienne
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2018
Subjects: subject: Atominterferometrie
subject: Beschleunigungssensor
subject: Inertialsensor
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: Der Very Long Baseline Atom Interferometer-Teststand (VLBAI) ist eine multifunktional einsetzbare Experimentplattform für atominterferometrische Inertialsensorik zur Geodäsie und Grundlagenforschung in der Physik. Es ist eines der drei zentralen Großgeräte im Forschungsbau HITec. Drei Wissenschaftler vom Institut für Quantenoptik berichten.
Reduced graphene oxide wrapped Cu2O supported on C3N4: An efficient visible light responsive semiconductor photocatalyst
Creators: name: Ganesh Babu, S.
name: Vinoth, R.
name: Surya Narayana, P.
name: Bahnemann, Detlef W.
name: Neppolian, B.
Publisher: name: Melville, New York : AIP Publishing Llc
Year: 2015
Subjects: subject: Visible light
subject: band gap
subject: x-ray diffraction
subject: copper
subject: heterojunctions
subject: Dewey Decimal Classification::500 | Naturwissenschaften
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: Herein, Cu 2O spheres were prepared and encapsulated with reduced graphene oxide (rGO). The Cu 2O–rGO–C3N4 composite covered the whole solar spectrum with significant absorption intensity. rGO wrapped Cu 2O loading caused a red shift in the absorption with respect to considering the absorption of bare C3N4. The photoluminescence study confirms that rGO exploited as an electron transport layer at the interface of Cu 2O and C3N4 heterojunction. Utmost, ∼2 fold synergistic effect was achieved with Cu 2O–rGO–C3N4 for the photocatalytic reduction of 4-nitrophenol to 4-aminophenol in comparison with Cu 2O–rGO and C3N4. The Cu 2O–rGO–C3N4 photocatalyst was reused for four times without loss in its activity.
title: АКТУАЛЬНЫЕ ПРОБЛЕМЫ НАСЛЕДОВАНИЯ  НЕСОВЕРШЕННОЛЕТНИМИ
Creators: name: Александрова, Екатерина
name: Дорошенко, Татьяна
Publisher: name: Новгородский государственный университет имени Ярослава Мудрого (НовГУ)
Year: 2019

description: В статье рассмотрены некоторые проблемы наследования несовершеннолетними, связанные с их особым правовым положением в обществе. Приведен анализ норм, регулирующих участие детей в наследственных правоотношениях. Предложены решения указанных проблем.
A Dataflow Language for Decentralised Orchestration of Web Service Workflows
Creators: name: Jaradat, Ward
name: Dearle, Alan
name: Barker, Adam
Publisher: name: arXiv
Year: 2013
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: Orchestrating centralised service-oriented workflows presents significant scalability challenges that include: the consumption of network bandwidth, degradation of performance, and single points of failure. This paper presents a high-level dataflow specification language that attempts to address these scalability challenges. This language provides simple abstractions for orchestrating large-scale web service workflows, and separates between the workflow logic and its execution. It is based on a data-driven model that permits parallelism to improve the workflow performance. We provide a decentralised architecture that allows the computation logic to be moved "closer" to services involved in the workflow. This is achieved through partitioning the workflow specification into smaller fragments that may be sent to remote orchestration services for execution. The orchestration services rely on proxies that exploit connectivity to services in the workflow. These proxies perform service invocations and compositions on behalf of the orchestration services, and carry out data collection, retrieval, and mediation tasks. The evaluation of our architecture implementation concludes that our decentralised approach reduces the execution time of workflows, and scales accordingly with the increasing size of data sets.
description: To appear in Proceedings of the IEEE 2013 7th International Workshop on Scientific Workflows, in conjunction with IEEE SERVICES 2013
Untersuchungen zur Bestimmung von hochfrequenten elektromagnetischen Emissionen von Windkraftanlagen
Creators: name: Koj, Sebastian
name: Fisahn, Sven
name: Garbe, Heyno
Publisher: name: Aachen : Apprimus
Year: 2016
Subjects: subject: Windkraftwerk
subject: EME
subject: Messung
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau::621 | Angewandte Physik::621,3 | Elektrotechnik, Elektronik

description: In diesem Beitrag wird ein Messkonzept zur vergleichbaren Bestimmung der gestrahlten elektromagnetischen Emissionen von Windkraftanlagen vorgestellt. Dazu wird anhand der normativen Lage die Notwendigkeit einer präzisierten Messvorschrift für Windkraftanlagen erläutert. Hierzu werden zunächst die Textstellen der aktuellen internationalen Norm IEC/CISPR 11 [1] bzw. der nationalen Norm DIN EN 55011 [2] aufgezeigt, die einen großen Interpretationsspielraum in Bezug auf Windkraftanlagen bieten. Anschließend werden die in der Technischen Richtlinie 9 [3] erarbeiteten Lösungen vorgestellt und analysiert. Zur Beurteilung der aktuellen normativen Lage werden sowohl Emissionsmessungen nach [2] als auch nach [3] durchgeführt, wobei bei den Messungen nach [2] bewusst die vorhandenen Interpretationsspielräume ausgenutzt werden. Die somit gewonnenen Messergebnisse zeigen, dass zum einen die in [3] beschriebene Vorgehensweise zur Reduzierung der Messunsicherheit beiträgt, zum anderen aber auch, dass weiterhin noch Aspekte mit Handlungsbedarf bestehen.
Water deuterium fractionation in the inner regions of two solar type protostars
Creators: name: Taquet, Vianney
name: Lòpez-Sepulcre, Ana
name: Ceccarelli, Cecilia
name: Neri, Roberto
name: Kahane, Claudine
name: Coutens, Audrey
name: Vastel, Charlotte
Publisher: name: arXiv
Year: 2013
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The [HDO]/[H2O] ratio is a crucial parameter for probing the history of water formation. So far, it has been measured for only three solar type protostars and yielded different results, possibly pointing to a substantially different history in their formation. In the present work, we report new interferometric observations of the HDO 4 2,2 - 4 2,3 line for two solar type protostars, IRAS2A and IRAS4A, located in the NGC1333 region. In both sources, the detected HDO emission originates from a central compact unresolved region. Comparison with previously published interferometric observations of the H218$O 3 1,3 - 2 2,0 line shows that the HDO and H$_2$O lines mostly come from the same region. A non-LTE LVG analysis of the HDO and H218$O line emissions, combined with published observations, provides a [HDO]/[H2O] ratio of 0.3 - 8 % in IRAS2A and 0.5 - 3 % in IRAS4A. First, the water fractionation is lower than that of other molecules such as formaldehyde and methanol in the same sources. Second, it is similar to that measured in the solar type protostar prototype, IRAS16293-2422, and, surprisingly enough, larger than that measured in NGC1333 IRAS4B. {The comparison of the measured values towards IRAS2A and IRAS4A with the predictions of our gas-grain model GRAINOBLE gives similar conclusions to those for IRAS 16293, arguing that these protostars {share} a similar chemical history, although they are located in different clouds.
description: Accepted for publication to ApJL. 6 pages, 2 figures
Preparation, Characterization, and Photocatalytic Applications of MWCNTs/TiO2 Composite
Creators: name: Kamil, Ahmed M.
name: Hussein, Falah H.
name: Halbus, Ahmed F.
name: Bahnemann, Detlef W.
Publisher: name: New York : Hindawi Publishing Corporation
Year: 2014
Subjects: subject: walled carbon nanotubes
subject: mechanical-properties
subject: raman-spectra
subject: tio2
subject: nanocomposites
subject: spectroscopy
subject: degradation
subject: films
subject: Dewey Decimal Classification::500 | Naturwissenschaften
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: The multiwall carbon nanotubes (MWCNTs)/titanium dioxide (P25) composite in different ratios was prepared using simple evaporation and drying process. The composite was characterized by Raman spectroscopy, X-ray diffraction (XRD), UV-visible diffuse reflectance spectroscopy, and scanning electron microscopy (SEM). The photocatalytic activity of this composite was investigated using degradation of the Bismarck brown R dye (BBR). An optimal MWCNTs/TiO2 ratio of 0.5% (w/w) was found to achieve the maximum rate of BBR degradation. It was observed that the composite exhibits enhanced photocatalytic activity compared with TiO2. The enhancement in photocatalytic activity performance of the MWCNTs/P25 composite is explained in terms of recombination of photogenerated electron-hole pairs. In addition, MWCNTs act as a dispersing support to control the morphology of TiO2 particles in the MWCNTs/TiO2 composite.
MXene molecular sieving membranes for highly efficient gas separation
Creators: name: Ding, Li
name: Wei, Yanying
name: Li, Libo
name: Zhang, Tao
name: Wang, Haihui
name: Xue, Jian
name: Ding, Liang-Xin
name: Wang, Suqing
name: Caro, Jürgen
name: Gogotsi, Yury
Publisher: name: London : Nature Publishing Group
Year: 2018
Subjects: subject: nanosheet
subject: energy efficiency
subject: manufacturing
subject: mass transport
subject: membrane
subject: molecular analysis
subject: permeability
subject: separation
subject: sieving
subject: simulation
subject: Article
subject: controlled study
subject: gas
subject: infrared spectroscopy
subject: membrane permeability
subject: molecular dynamics
subject: molecular weight
subject: mxene membrane
subject: quantitative analysis
subject: scanning electron microscopy
subject: surface property
subject: Dewey Decimal Classification::500 | Naturwissenschaften

description: Molecular sieving membranes with sufficient and uniform nanochannels that break the permeability-selectivity trade-off are desirable for energy-efficient gas separation, and the arising two-dimensional (2D) materials provide new routes for membrane development. However, for 2D lamellar membranes, disordered interlayer nanochannels for mass transport are usually formed between randomly stacked neighboring nanosheets, which is obstructive for highly efficient separation. Therefore, manufacturing lamellar membranes with highly ordered nanochannel structures for fast and precise molecular sieving is still challenging. Here, we report on lamellar stacked MXene membranes with aligned and regular subnanometer channels, taking advantage of the abundant surface-terminating groups on the MXene nanosheets, which exhibit excellent gas separation performance with H2 permeability >2200 Barrer and H2/CO2 selectivity >160, superior to the state-of-the-art membranes. The results of molecular dynamics simulations quantitatively support the experiments, confirming the subnanometer interlayer spacing between the neighboring MXene nanosheets as molecular sieving channels for gas separation.
title: Meisterwerke europäischer Malerei aus ungarischen Museen. Eine Ausstellung des Museums der Bildenden Künste und der Ungarischen Nationalgalerie, Budapest. Germanisches Nationalmuseum, 9. November 1985 - 26. Januar 1986
Creators: name: Schneider, Ulrich
Publisher: name: University Library Heidelberg
Year: 2015

description: [nicht vorhanden / not available]
title: On the dressing method for the generalised Zakharov-Shabat system
Creators: name: Ivanov, Rossen
Publisher: name: Technological University of Dublin
Year: 2004

description: The dressing procedure for the Generalised Zakharov-Shabat system is well known for systems, related to sl(N) algebras. We extend the method, constructing explicitly the dressing factors for some systems, related to orthogonal and symplectic Lie algebras. We consider ’dressed’ fundamental analytical solutions with simple poles at the prescribed eigenvalue points and obtain the corresponding Lax potentials, representing the soliton solutions for some important nonlinear evolution equations
Iron(III) Complexes on a Dendrimeric Basis and Various Amine Core Investigated by Mössbauer Spectroscopy
Creators: name: Nariaki, Driss
name: Lekovic, F.
name: Homenya, Patrick
name: Costa, B.F.O.
name: Menzel, M.
name: Boca, R.
name: Blumers, M.
name: Klingelhoefer, G.
name: Renz, Franz
Publisher: name: Bristol : IOP Publishing Ltd.
Year: 2014
Subjects: subject: spectra
subject: Konferenzschrift
subject: Dewey Decimal Classification::500 | Naturwissenschaften
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: Dendrimers of various generations were synthesized by the divergent method. Starting from various amine cores (G(0a), G(0b), G(0c)) the generations were built by reaction of the amine with acrylnitrile followed by hydrogenation with DIBAL-H. Treatment with salicylaldehyde creates a fivefold coordination sphere for iron in the molecular periphery. The resulting multinuclear coordination compounds are investigated by Mossbauer spectroscopy.
Eriophorum latifolium Hoppe
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: E. latifolium Hoppe Cat. 361. Bis 2600 m. l: Vernayaz (Coquoz); Outre-Rhone (Garns). - 3: Alp Composana ob Zinal, 2600m (Marietan); Zermatt: Findelental, bis 2040 m (Thellung), Zmutt-Tal, bis 2050m (idem). - 4: Binntal (Binz, Becherer); nördlich des Märjelensees, 2460m (Marietan).
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
Simulating radio emission from air showers with CoREAS
Creators: name: Huege, T.
name: Ludwig, M.
name: James, C. W.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: CoREAS is a Monte Carlo code for the simulation of radio emission from extensive air showers. It implements the endpoint formalism for the calculation of electromagnetic radiation directly in CORSIKA. As such, it is parameter-free, makes no assumptions on the emission mechanism for the radio signals, and takes into account the complete complexity of the electron and positron distributions as simulated by CORSIKA. In this article, we illustrate the capabilities of CoREAS with simulations carried out in different frequency ranges from tens of MHz up to GHz frequencies, and describe in particular the emission characteristics at high frequencies due to Cherenkov effects arising from the varying refractive index of the atmosphere.
Untersuchungen zur Messunsicherheit bei der Kalibrierung von E-Feldsonden
Creators: name: Saul, Enrico
name: Bönisch, Sven
name: Heinrich, Ralf
name: Karsten, Uwe
Publisher: name: Aachen : Apprimus
Year: 2016
Subjects: subject: Messfehler
subject: Messtechnik
subject: E-Feldsondenkalibrierung
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau::621 | Angewandte Physik::621,3 | Elektrotechnik, Elektronik

description: lm Rahmen der Erweiterung der Akkreditierung eines E-Feldsondenkalibrierplatzes auf 18 GHz wurden Untersuchungen zur Bestimmung von Messunsicherheitsbeiträgen durchgeführt. Hierbei konnte teilweise auf bereits bestehende Kalibrierungen von Komponenten, wie z. B. Leistungsmesser und Antennen, zurückgegriffen werden. Schwerpunkt der Untersuchungen bildeten daher die nicht direkt kalibrierbaren Eigenschaften des Messplatzes. Dazu zählen u. a. die frequenzabhängige Richtcharakteristik der Antennen, die Reflexionseigenschaften des Raumes und der Einfluss von Anschlüssen. Die Berechnung der Gesamtmessunsicherheit des Kalibrierplatzes konnte dann mit Hilfe des GUM [2] und des GUM S1 [3] erfolgen. Dabei handelt es sich um zwei unterschiedliche Berechnungsansätze. Da die Berechnung nach GUM S1 eine Monte-Carlo-Analyse ist, wurde diese unter Verwendung numerischer Berechnungswerkzeuge in abgewandelter Form implementiert. Dazu wurde anders als in [3] beschrieben, der Prozess der Erstellung der Zufallswerte vorgezogen. Dies ermöglicht die Verwendung von einfachen Verteilungsfunktionen zur Zufallszahlenerzeugung ohne die komplexe analytische Berechnung der Verteilungsfunktion des gesamten Messplatzes.
title: ГОСУДАРСТВЕННЫЙ БАНК ДАННЫХ О ДЕТЯХ
Creators: name: Антонова, Дарья
Publisher: name: Новгородский государственный университет имени Ярослава Мудрого (НовГУ)
Year: 2019

description: Данная научная статья описывает основные задачи, цели и функции государственного банка данных о детях.
title: НОТАРИАЛЬНАЯ ЗАЩИТА ПРАВ НЕСОВЕРШЕННОЛЕТНИХ
Creators: name: Антонова, Александва
Publisher: name: Новгородский государственный университет имени Ярослава Мудрого (НовГУ)
Year: 2019

description: В статье рассматриваются права, которые предоставлены законом нотариусу в части защиты законных прав и интересов несовершеннолетних, а также виды нотариальных действий, направленных на защиту имущественных прав и интересов несовершеннолетних граждан.
Significance of the resonance condition for controlling the seam position in laser-assisted TIG welding
Creators: name: Emde, B.
name: Huse, M.
name: Hermsdorf, J.
name: Kaierle, Stefan
name: Wesling, V.
name: Overmeyer, Ludger
name: Kozakov, R.
name: Uhrlandt, D.
Publisher: name: Amsterdam : Elsevier B.V.
Year: 2016
Subjects: subject: laser radiation
subject: resonant absorption
subject: TIG arc
subject: Atom lasers
subject: Gas welding
subject: Inert gas welding
subject: Laser radiation
subject: Position control
subject: A-tig welding
subject: Electrical conductivity
subject: Laser hybrid welding
subject: Laser-assisted
subject: Resonance condition
subject: Resonant absorption
subject: Resonant interaction
subject: Argon lasers
subject: Konferenzschrift
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: As an energy-preserving variant of laser hybrid welding, laser-assisted arc welding uses laser powers of less than 1 kW. Recent studies have shown that the electrical conductivity of a TIG welding arc changes within the arc in case of a resonant interaction between laser radiation and argon atoms. This paper presents investigations on how to control the position of the arc root on the workpiece by means of the resonant interaction. Furthermore, the influence on the welding result is demonstrated. The welding tests were carried out on a cooled copper plate and steel samples with resonant and non-resonant laser radiation. Moreover, an analysis of the weld seam is presented.
Studies of atomic diffusion in Ni-Pt solid solution by x-ray photon correlation spectroscopy
Creators: name: Stana, Markus
name: Leitner, Michael
name: Ross, Manuel
name: Sepiol, Bogdan
Publisher: name: arXiv
Year: 2013
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: Atomic scale x-ray photon correlation spectroscopy (aXPCS) was used to study atomic diffusion in the Ni97 Pt3 solid solution with both a single crystal and a polycrystalline sample. Different jump diffusion models are discussed using experimental results and Monte Carlo simulations. The sensitivity of aXPCS experiments to short-range order (in this case governed by a strong Pt-Pt repulsive force) is demonstrated. The activation energy of 2.93(10) eV as well as diffusivities in the range of 10-23 m2 s-1 at 830 K agree very well with the results of tracer diffusion studies at much higher temperatures.
Studies on the robustness of underwater laser cutting of S355J2+N using a Yb:YAG disk laser source
Creators: name: Leschke, Jan
name: Barroi, Alexander
name: Kaierle, Stefan
name: Hermsdorf, Jörg
name: Overmeyer, Ludger
Publisher: name: Amsterdam : Elsevier B.V.
Year: 2016
Subjects: subject: deconstruction
subject: laser cutting
subject: oxygen
subject: robustness
subject: underwater
subject: Cutting
subject: Cutting tools
subject: Laser applications
subject: Laser beam cutting
subject: Laser beam welding
subject: Laser beams
subject: Oxygen
subject: Oxygen cutting
subject: Robustness (control systems)
subject: Ytterbium
subject: Constructional steels
subject: Laser cutting
subject: Laser cutting process
subject: Process robustness
subject: Standard components
subject: Underwater operations
subject: Underwater cutting
subject: Konferenzschrift
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: In this paper, an underwater laser cutting process for maintenance and replacement operations is presented and investigated regarding process robustness for the application in rough environments. A Yb:YAG laser is used with 4 kW laser power in an active cutting process with oxygen as cutting gas. For 10 mm thick constructional steel plates a process window is determined with the focus on robustness for distance interferences. The examined parameter sets include the nozzle clearance, focus positioning and cutting gas pressure adjustment, as they are significant factors of influence in underwater laser cutting. By adjusting the developed parameter sets, sheets with thicknesses up to 50 mm, as well as plates that are fixed to a concrete backing are cut. The used equipment, which completely consists of standard components, is presented along with its preparation for underwater operation.
Validierung von Feldstärke - Messplätzen im Frequenzbereich von 9 kHz – 30 MHz mit Rahmen-Antennen
Creators: name: Trautnitz, Friedrich-Wilhelm
name: Riedelsheimer, Jochen
Publisher: name: Aachen : Apprimus
Year: 2016
Subjects: subject: CISPR
subject: RRT
subject: Messung
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau::621 | Angewandte Physik::621,3 | Elektrotechnik, Elektronik

description: In den letzten zwei Jahren wurde in der Ad Hoc < 30 MHz im CISPR A an der Ausarbeitung einer Beschreibung der Validierungsmethode und der Messmethode gearbeitet. Sowohl für die Validierungsmethode, als auch für die Messung von Prüflingen liegen mittlerweile Beschreibungen in Form von Entwürfen vor. Diese Entwürfe wurden im CISPR zur Diskussion gestellt und kommentiert. Nach wie vor ist die Einführung einer Validierungsmethode von Messplätzen im Frequenzbereich von 9 kHz bis 30 MHz eine fordernde Aufgabe. Der Round Robin Test (RRT) in 2011, durchgeführt vom AK 767.4.1 (AHF) hat zwar zur Information über das Verhalten von Prüfplätzen bei Anwendung einer gewissen Messmethode geführt, aber auch viele Fragen aufgeworfen. Der Artikel stellt den erarbeiteten Stand des Entwurfes zur Validierung dar und zeigt den weiteren Untersuchungsbedarf.
Vereinfachung des Allgemeinen Verfahrens zur Bestimmung der unabhängigen Rührerstellungen in Modenverwirbelungskammern durch Reduktion der Anzahl der Messpunkte im Prüfvolumen
Creators: name: Pfennig, Stephan
Publisher: name: Aachen : Apprimus
Year: 2016
Subjects: subject: Modenverwirbelungskammer
subject: Rührerstellung
subject: Messtechnik
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau::621 | Angewandte Physik::621,3 | Elektrotechnik, Elektronik

description: Ein Verfahren zur Abschätzung der Anzahl der unabhängigen Rührerstellungen in Modenverwirbelungskammern (MVK‘n) wird in DINEN61000-4-21 [1] beschrieben. Das Standardverfahren verwendet einen einzigen Messpunkt im Prüfvolumen der MVK und hat daher Nachteile, die z.B. bereits in [2] diskutiert wurden. Es erfordert jedoch nur einen geringen Aufwand und liefert eine erste Abschatzung für die Anzahl der unabhängigen Rührerstellungen. Ein neues ‚Allgemeines Verfahren‘ zur Bestimmung der unabhängigen Rührerstellungen wurde bereits in [3, 4] vorgestellt und in [5, 6, 7] weiterführend bewertet. Für das Allgemeine Verfahren wird ein Prüfvolumen mit einer definierten Anzahl von Messpunkten verwendet, d. h. im Gegensatz zum Standardverfahren basiert das Allgemeine Verfahren auf einer echten Auswertung der Feldverteilungen im Prüfvolumen. Da die Aufnahme der Messdaten sehr zeitaufwendig ist, wird im vorliegenden Konferenzbeitrag eine Vereinfachung des Verfahrens untersucht werden, bei der die Anzahl der Messpunkte reduziert und die Auswertung der Messdaten entsprechend angepasst wird. Eine Reduktion der Anzahl der Messpunkte auf die 8 Eckpunkte des Prüfvolumens wird bereits in DINEN61000-4-21 zur Bewertung der Feldhomogenität im Prüfvolumen verwendet und ist prinzipiell kein neuer Ansatz, jedoch wurde soweit dem Autor bekannt bisher nicht nachgewiesen, dass dieser Ansatz zur Bewertung der Feldhomogenität überhaupt zulässig ist. Daher ist es das Ziel dieses Beitrages, den Ansatz durch eine entsprechende Auswertung von Messdaten zu bewerten.
Verfahren zur simulativen Modellierung der Gleichtaktanregung
Creators: name: Oberdieck, Karl
name: Engelmann, Georges
name: De Doncker, Rik W.
Publisher: name: Aachen : Apprimus
Year: 2016
Subjects: subject: Modellierung
subject: Gleichtaktanregung
subject: EMV
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau::621 | Angewandte Physik::621,3 | Elektrotechnik, Elektronik

description: Die Anforderungen an die elektromagnetische Verträglichkeit (EMV) leistungselektronischer Systeme erfordern bei deren Design eine detaillierte Modellierung der durch die Schalthandlungen verursachten Störanregung. Dabei wird abhängig vom Kopplungspfad zwischen Gleichund Gegentaktstörung unterschieden. Der vorliegende Beitrag beschäftigt sich mit der Modellierung der Anregung des Gleichtaktsystems, der Gleichtaktanregung. Zur Modellierung der Gleichtaktanregung sind aus der Literatur verschiedene Ansätze [1-6] bekannt, welche die Schaltflanke abschnittsweise im Zeitund Frequenzbereich parametrieren. In diesem Beitrag wird ein neuer Ansatz zur Modellierung der Gleichtaktanregung mit PT-Gliedern vorgestellt. Die Vorteile verglichen mit bisherigen Ansätzen sind einerseits die effiziente Berechnung über einen weiten Zeitund Frequenzbereich, wodurch ein abschnittsweises Parametrieren entfällt, und andererseits die intuitive Modellierung von Überschwingern und Spannungsschweif. Zum Vergleich werden verschiedene Ansätze gegenübergestellt und anhand von Messungen an einem kommerziellen IGBT-Modul (Infineon HybridPACK2 mit 800 A Nennstrom) bewertet.
Vergleich der leitungsgebundenen Störemissionen und des Wirkungsgrads von Silizium IGBTs mit Siliziumkarbit MOSFETs als Leistungsschalter in Traktionsinvertern
Creators: name: Hillenbrand, Philipp
name: Tenbohlen, Stefan
Publisher: name: Aachen : Apprimus
Year: 2016
Subjects: subject: Störsignal
subject: Wirkungsgrad
subject: Silicium
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau::621 | Angewandte Physik::621,3 | Elektrotechnik, Elektronik

description: Bei der Elektromobilität entwickeln sich die Reichweite und der Preis des Fahrzeuges zu einer der Schlüsselrollen. Dies hat direkte Auswirkungen auf alle Komponenten des elektrischen Antriebstrangs eines Elektrofahrzeuges (EF). Beim Inverter, der im EF zur Wandlung der Batteriegleichspannung in einen dreiphasigen Wechselstrom genutzt wird, um die elektrische Maschine anzutreiben, sind daher ein hoher Wirkungsgrad und geringe Gesamtkosten erstrebenswert. Inverter heutiger EFs basieren typischerweise auf Silizium (Si) Insulated Gate Bipolar Transistoren (IGBT). Der Wirkungsgrad dieser Inverter wird meist zwischen 90% und 95% angegeben. Dieser Wirkungsgrad wird jedoch nur im Nennbetriebspunkt des Inverters erreicht. Vor allem im Teillastbetrieb des Inverters verringert sich sein Wirkungsgrad stark. Durch Verwendung von Metall Oxid Feldeffekttransistoren (MOSFET) aus neuen Halbleitermaterialien wie beispielsweise Siliziumkarbid (SiC) kann sowohl für den Nennbetriebspunkt als auch im Teillastbereich der Wirkungsgrad des Inverters nennenswert erhöht werden. Dies wird zum einen durch schnellere Schaltzeiten und damit einhergehende geringere Schaltverluste und zum anderen durch geringere Durchlassverluste der Leistungsschalter erreicht. Zusätzlich ermöglicht ein Inverter basierend auf SiC-MOSFETs eine schnellere Taktfrequenz, höhere Betriebsspannungen und weitere Vorteile, wie beispielsweise beim Thermomanagement. Diesen Vorteilen bei Verwendung von SiC-MOSFETs stehen größere leitungsgebunden als auch feldgebunden Emissionen des Inverters gegenüber [1]. In diesem Beitrag soll untersucht werden, wie stark die leitungsgebundenen Störungen eines Inverters beeinflusst werden, wenn Si-IGBTs durch SiC-MOSFETs ersetzt werden. Dazu wird ebenfalls untersucht, in wieweit Veränderungen von Systemgrößen, wie beispielsweise eine Erhöhung der Taktfrequenz und der Batteriespannung, den Wirkungsgrad und die leitungsgebundenen Emissionen des Inverters beeinflussen.
title: The BodyMind Approach for supporting medically unexplained symptoms: Outcomes and Process
Creators: name: Payne, Helen
Publisher: name: University of Hertfordshire
Year: 2018

description: The International Embodiment Conference. Duration: 10 Oct 2018 → 10 Oct 2018. Location of event: online
Web address (URL): https://www.dropbox.com/sh/mrryhu4wxmskxv9/AAAgdcTzRMK-XbqA0Uv3Pq0La?dl=0
title: Quasi-minimal Abelian groups
Creators: name: Goldsmith , Brenda
name: O'Hogain , S
name: Wallutis, S
Publisher: name: Technological University of Dublin
Year: 2004

description: An abelian group $G$ is said to be quasi-minimal (purely quasi-minimal, directly quasi-minimal) if it is isomorphic to all its subgroups (pure subgroups, direct summands, respectively) of the same cardinality as $G$. Obviously quasi-minimality implies pure quasi-minimality which in turn implies direct quasi-minimality, but we show that neither converse implication holds. We obtain a complete characterisation of quasi-minimal groups. In the purely quasi-minimal case, assuming GCH, a complete characterisation is also established. An independence result is proved for directly quasi-minimal groups.
Sensitivity-based Model Reduction for In-Process Identification of Industrial Robots Inverse Dynamics
Creators: name: Volkmann, Björn
name: Kaczor, Daniel
name: Tantau, Mathias
name: Schappler, Moritz
name: Ortmaier, Tobias
Publisher: name: Piscataway, NJ, USA : IEEE 2020
Year: 2020
Subjects: subject: Model order reduction
subject: Sensitivity
subject: Identification
subject: Industrial Robot
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: This paper presents a sensitivity-based approach for optimal model design and identification of the dynamics of a state-of-the-art industrial robot considering process-related restrictions. The possibility of parameter excitation for subsequent identification of the model parameters is severely limited due to restrictions imposed by the process environment, especially the limited available workspace. Without sufficient parameter excitation, a satisfactory quality of the full model identification cannot be achieved, since non-excited parameters cannot be identified correctly. Furthermore, optimal excitation requires time-consuming calculations and distinct experiments during which the robot is not available for daily operation. It is therefore of interest to use process-related trajectories instead of dedicated excitation trajectories, which is expected to deteriorate the identifiability of the model parameters. For this reason, the presented method uses a sensitivity-based approach allowing model order reduction in the identification process. The resulting model contains only those parameters excited by the excitation trajectory. For process-related trajectories this implies the model being limited to parameters relevant for the process. In experiments with a standard serial-link industrial robot controlled by standard industrial programmable logic control and servo inverters it is shown that the method produces significantly reduced models with a good measure of identifiability and quality.
Radioökologische Untersuchungen landwirtschaftlich genutzter Auen der Mulde zu den Folgen des ehemaligen Uranbergbaus
Creators: name: Bister, Stefan
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2012
Subjects: subject: Uranium
subject: Mulde river
subject: uranium mining
subject: floodplains
subject: alluvial soil
subject: Saxony
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie
subject: Dewey Decimal Classification::300 | Sozialwissenschaften, Soziologie, Anthropologie::330 | Wirtschaft::333 | Boden- und Energiewirtschaft::333,7 | Natürliche Ressourcen, Energie und Umwelt

description: [no abstract]
Anomalous reduction of the Lorenz ratio at the quantum critical point in YbAgGe
Creators: name: Dong, J. K.
name: Tokiwa, Y.
name: Bud'ko, S. L.
name: Canfield, P. C.
name: Gegenwart, P.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We report measurements of the electrical and thermal transport on the hexagonal heavy-fermion metal YbAgGe for temperatures $T\geq$ 40 mK and in magnetic fields $H\parallel ab$ up to 14 T. This distorted Kagome-lattice system displays a series of magnetic states and a quantum critical point at $H_c =4.5$ T. The Lorenz ratio $L(T)/L_0$ displays a marked reduction only close to $H_c$. A $T$-linear contribution below 120 mK, present at all different fields, allows to extrapolate the Lorenz ratio towards T=0. At the critical field this yields $L/L_0=0.92\pm 0.03$, suggesting a violation of the Wiedemann-Franz law due to strong inelastic scattering.
description: 7 pages including supplemental material
Theorien globalen Lernens : auf dem Weg zu einem deutsch-brasilianischen Dialog zwischen Sozialwissenschaftlern und Pädagogen
Creators: name: Auditor, Markus
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2012
Subjects: subject: Global education
subject: dialogue
subject: transculturalism
subject: Globales Lernen
subject: Dialog
subject: Transkulturalismus
subject: Dewey Decimal Classification::300 | Sozialwissenschaften, Soziologie, Anthropologie::370 | Erziehung, Schul- und Bildungswesen

description: [no abstract]
Assembling fragments: a two-layer knowledge management tool to explore algorithms and their social functions
Creators: name: Rayya, ROUMANOS
name: Olivier, LE DEUFF
Publisher: name: Zenodo
Year: 2023
Subjects: Knowledge Management Graph
Hyperdocument
Algorithms
Literacy
Journalism

description: The focus of this talk at the IST23 is to present the reasoning behind a knowledge management graph currently being developed within the framework of a French research project called Algo-J. Built around a lexicon comprising linked notes or cards, the graph aims to enhance algorithm literacy among journalists, empowering them to set up effective investigations into the disruptive influence of these technical pieces of engineering.