cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Extended Simulation Model For An Aerodynamic Feeding System
Creators: name: Kolditz, Torge
name: Hentschel, Jakob
name: Katz, Fabian
name: Raatz, Annika
Publisher: name: Hannover : publish-Ing.
Year: 2021
Subjects: subject: Aerodynamic Feeding
subject: simulation
subject: Flexible Feeding Systems
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: Due to an increased number of product variants and shorter product life cycles, flexible automation plays a vital role in the producing industry. In assembly systems, industrial robots are used as highly versatile handling and joining devices. Simultaneously, the corresponding feeding systems that provide the workpieces in an orderly fashion for automated assembly can often not meet the required flexibility. In order to achieve high flexibility and reusability, an aerodynamic feeding system was developed. The feeding system can flexibly and rapidly adapt itself to new workpieces autonomously, using a genetic algorithm. To find the optimal parameters for the genetic algorithm, a workpiece specific simulation model of the aerodynamic orientation process was developed and validated in earlier work. In this work, we extended the simulation model with regard to the spectrum of workpieces that can be simulated and developed a userfriendly framework to simplify the application of the model. Our goal is to reduce the setting time of the genetic algorithm even further by predicting the optimal range of the feeding system’s parameters for any workpiece using the extended simulation model. To evaluate and validate the simulation model, we carried out extensive tests with different exemplary workpieces. The results show that the setting time of the aerodynamic feeding system can be dramatically reduced using the extended simulation model, further increasing the flexibility and reusability of the system.
title: En Ukraine : l’Indépendance contre la Révolution ? Entretien avec Roman Podkur
Creators: name: Koustova, Emilia
Publisher: name: Politika.io
Year: 2019

description: Loin d’appartenir à un passé éloigné, 1917 et sa mémoire renvoient potentiellement à des sujets d’une actualité brûlante pour la société ukrainienne, conduisant, comme l’explique l’historien Roman Podkur, à des choix mémoriels opposés dans les territoires du Donbass et le reste du pays, entre la perpétuation de la tradition soviétique, d’une part, et la marginalisation de ce centenaire au profit de la célébration de l’indépendance proclamée en 1918, d’autre part.
title: Retour sur une exposition
titleType: Other
Creators: name: Blum, Alain
Publisher: name: Politika.io
Year: 2019

description: Sous forme d’un diaporama, l’un des co-commissaires de Et 1917 devint révolution…, organisée à La Contemporaine pour le centenaire de 1917, retrace un des récits suggérés par l’exposition, soucieuse d’échapper à l’aimantation de la mémoire de l’année révolutionnaire par les seuls événements d’Octobre.
Brief an Susanna Bernoulli-König
Creators: name: Bernoulli-Euler, Charlotte Anna Wilhelmine
name: Collins, Johann David
Publisher: name: [s.n.]
Year: 1793

description: Postscriptum von [Johann] David Collins (1 Seite)
description: von Charlotte Collins
description: Mit Oblate
description: Öffentliche Bibliothek der Universität Basel
description: Deutsch
description: Verzeichnung=Description=Inventaire Juli 2023 HAN-Katalogisierungsregeln Vollständige Rekatalogisierung nach Verzeichnis Bernoulli Archiv, Briefkatalog und Original prl
title: F[ritz] Freising: Die Bernsteinstraße aus der Sicht der Straßentrassierung. Archiv für die Geschichte des Straßenwesens. Bonn-Bad Godesberg 1977
Creators: name: Abels, Björn-Uwe
Publisher: name: University Library Heidelberg
Year: 2015

description: Rezension zu: F[ritz] Freising: Die Bernsteinstraße aus der Sicht der Straßentrassierung. Archiv für die Geschichte des Straßenwesens. Kirschbaum Verlag, Bonn-Bad Godesberg 1977. 60 Seiten, 13 Textabbildungen und 1 Falttafel.
title: Bilan d'une commémoration
titleType: Other
Creators: name: Blum, Alain
Publisher: name: Politika.io
Year: 2019

description: L’année du centenaire de la Révolution de 1917 dans le monde a été l’occasion de reposer la question de la place de cette révolution dans l’histoire du XXe siècle, au moment où le pays qui fut longtemps porteur du « mythe d’Octobre » évitait toute commémoration officielle après de multiples hésitations témoignant de son embarras. L’objet de ce dossier est de revenir sur cette année de commémoration dans le monde, marquée par des événements de nature très diverse, entre colloques scientifiques et expositions artistiques. Cependant, sa signification politique pour le présent a, à quelques exceptions près, été mise en arrière-plan de la scène commémorative. C’est sur ce contraste avec ce qui pouvait être fait avant 1989 ou 1991 que ce dossier est fondé, pour offrir une réflexion qui traverse plusieurs pays dans lesquels ce centenaire fut bien présent, à défaut d’être célébré à l’aune d’un discours révolutionnaire.
Supersymmetry-generated complex optical potentials with real spectra
Creators: name: Miri, Mohammad-Ali
name: Heinrich, Matthias
name: Christodoulides, Demetrios N.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Optics (physics.optics)
subject: Mathematical Physics (math-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We show that the formalism of supersymmetry (SUSY), when applied to parity-time (PT) symmetric optical potentials, can give rise to novel refractive index landscapes with altogether non-trivial properties. In particular, we find that the presence of gain and loss allows for arbitrarily removing bound states from the spectrum of a structure. This is in stark contrast to the Hermitian case, where the SUSY formalism can only address the fundamental mode of a potential. Subsequently we investigate isospectral families of complex potentials that exhibit entirely real spectra, despite the fact that their shapes violate PT-symmetry. Finally, the role of SUSY transformations in the regime of spontaneously broken PT symmetry is investigated.
description: 6 pages, 4 figures
Winter 1888/9
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1888

description: Öffentliche Bibliothek der Universität Basel
description: Deutsch
description: Verzeichnung=Description=Inventaire Oktober 2023 HAN-Katalogisierungsregeln Minimalniveau nach Autopsie
description: Digitalisierung=Digitization=Numérisation Oktober 2023 TIFF
description: Erschliessungsniveau Minimalniveau
Simulation der solaren Globalstrahlung im Spektralbereich 280-800 nm für die Umweltforschung
Creators: name: Kopatsch, Anton
Publisher: name: Hannover : Institutionelles Repositorium der Leibniz Universität Hannover
Year: 2022
Subjects: subject: Sunsimulator
subject: solar irradiance
subject: plant research
subject: Sonnenstrahlung
subject: Pflanzen Forschung
subject: Sonnensimulator
subject: Dewey Decimal Classification::500 | Naturwissenschaften
subject: Dewey Decimal Classification::600 | Technik

description: Ein neu entwickelter Sonnensimulator auf LED-Basis erlaubt es die bodennahe solare spektrale Bestrahlungsstärke mittlerer Breiten in einem Wellenlängenbereich von 280-800 nm zu simulieren. Der in die Decke einer Klimakammer für die pflanzenphysiologische Forschung integrierte Sonnensimulator bestrahlt dabei eine Fläche von 1,44 m2. Die maximale Bestrahlungsstärke des neuen Sonnensimulators beträgt 725 Wm-2, bei einer elektrischen Anschlussleistung von 16,6 kW. .
Hamiltonian dynamics of a quantum of space: hidden symmetries and spectrum of the volume operator, and discrete orthogonal polynomials
Creators: name: Aquilanti, Vincenzo
name: Marinelli, Dimitri
name: Marzuoli, Annalisa
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: The action of the quantum mechanical volume operator, introduced in connection with a symmetric representation of the three-body problem and recently recognized to play a fundamental role in discretized quantum gravity models, can be given as a second order difference equation which, by a complex phase change, we turn into a discrete Schrödinger-like equation. The introduction of discrete potential-like functions reveals the surprising crucial role here of hidden symmetries, first discovered by Regge for the quantum mechanical 6j symbols; insight is provided into the underlying geometric features. The spectrum and wavefunctions of the volume operator are discussed from the viewpoint of the Hamiltonian evolution of an elementary "quantum of space", and a transparent asymptotic picture emerges of the semiclassical and classical regimes. The definition of coordinates adapted to Regge symmetry is exploited for the construction of a novel set of discrete orthogonal polynomials, characterizing the oscillatory components of torsion-like modes.
description: 13 pages, 5 figures
The effect of defect layer on transmissivity and light field distribution in general function photonic crystals
Creators: name: Wu, Xiang-Yao
name: Zhang, Si-Qi
name: Zhang, Bo-Jun
name: Liu, Xiao-Jing
name: Wang, Jing
name: Li, Hong
name: Ba, Nuo
name: Yin, Xin-Guo
Publisher: name: arXiv
Year: 2012
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We have theoretically investigated a general function photonic crystals (GFPCs) with defect layer, and choose the line refractive index function for two mediums $A$ and $B$, and analyze the effect of defect layer's position, refractive indexes and period numbers on the transmission intensity and the electric field distribution. We obtain some new characters that are different from the conventional PCs, which should be helpful in the design of photonic crystals.
description: arXiv admin note: substantial text overlap with arXiv:1207.3556, arXiv:1205.1178, arXiv:1212.0796
Resonanz-Ramanspektroskopie an Carotinoiden in Algen zur Bestimmung der Kinetik des Violaxanthinzyklus
Creators: name: Koch, Matthias
Publisher: name: Hannover : Institutionelles Repositorium der Leibniz Universität Hannover
Year: 2018
Subjects: subject: Violaxanthinzyklus
subject: Kinetik
subject: Raman-Spektroskopie
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: Diese Arbeit beschreibt die erste gelungene Bestimmung der Kinetik des Violaxanthinzyklus in vivo auf Basis von Resonanz-Ramanspektroskopie. Der Violaxanthinzyklus ist ein Regelmechanismus der Photosynthese und besteht aus zwei Farbstoffen, Violaxanthin und Zeaxanthin, die über den Zwischenschritt Antheraxanthin ineinander umgewandelt werden können. Während Violaxanthin beim Sammeln von Sonnenlicht hilft und die absorbierte Energie ans Chlorophyll weitergibt, strahlt Zeaxanthin überschüssige Energie aus dem Chlorophyll als Wärme ab. Durch Umwandlung von Violaxanthin in Zeaxanthin und umgekehrt können Pflanzen das Verhältnis von gesammelter und wieder abgestrahlter Lichtenergie einstellen und somit die Effizienz ihrer Photosynthese regeln und sich vor Stress durch zu viel Licht schützen. Wie der Violaxanthinzyklus funktioniert, wurde bislang durch die chemische Untersuchung abgeschnittener und schnell eingefrorener Blätter untersucht. Wie schnell die Pflanzen auf wechselnde Lichtverhältnisse reagieren, ließ sich mit den chemischen Verfahren jedoch nur sehr schwer und unter großem Aufwand bestimmen. In dieser Arbeit ist durch Kombination von Resonanz-Ramanspektroskopie mit Hauptkomponentenzerlegung und einem insbesondere für die Verwendung an stark fluoreszierenden biologischen Proben neu entwickelten Grundlinienkorrekturalgorithmus die Beobachtung der Umwandlung von Violaxanthin in Zeaxanthin und zurück in vivo gelungen. Experimente zur Bestimmung der Kinetik beim abrupten Wechsel von Dunkel nach Hell und von Hell nach Dunkel wurden an der Grünalge Dunaliella salina durchgeführt. Die Zeitkonstanten für den Hell-Dunkel-Übergang liegen dabei je nach experimentellen Bedingungen zwischen 39 ± 8 und 46 ± 4 Minuten. Für den Dunkel-Hell-Übergang wurde eine Zeitkonstante von 3,2 ± 1,0 Minuten bestimmt. Außerdem wurden die Resonanzprofile von Chlorella vulgaris, Haematococcus pluvialis und Porphyridium purpureum in verschiedenen Stresszuständen bestimmt und in Bezug auf den Violaxanthinzyklus und die Produktion sekundärer Carotinoide diskutiert. Die Entwicklung eines Algenreaktors nach dem Airlift-Prinzip vervollständigt diese Arbeit.
Equisetum ramosissimum Desf.
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: E. ramosissimum Desf. Cat. 412. l: Rhonedamm bei Vernayaz (Garns); FUSS des Rosel (idem). - 2: Branson-Saillon (J., Garns, Becherer); ehem. Dünender Sarvaz (Garns); Ardon (P.); Sitten, an der Bahnlinie am FUSSdes Tourbillon (Huber); Glarey-Miege (Becherer); Brigerbad (Becherer und Thommen). - 3: Les Trappistes bei Sembrancher (R. Chodat); Leukerfeld (Wilczek und D.Dutoit); zwischen der Station Turtmann und der Brücke bei Niedergampel (Becherer und Schatzmann); Eisten im Saastal (A. Keller); Station Gamsen (Becherer); Brig (Wolf); ob Ried (Brig) (Becherer). - 3a: Gondo (Becherer). - 4: Bitsch (Becherer); Naters-Mörel (Jaquet); Binn-Imfeld (Binz); Rappental (Wilczek). Var. altissimum A.Br. - 2: Mazembroz-Saillon(Garns).
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
Mesoporous tin-doped indium oxide thin films: Effect of mesostructure on electrical conductivity
Creators: name: Graberg, Till Von
name: Hartmann, Pascal
name: Rein, Alexander
name: Gross, Silvia
name: Seelandt, Britta
name: Röger, Cornelia
name: Zieba, Roman
name: Traut, Alexander
name: Wark, Michael
name: Janek, Jürgen
name: Smarsly, Bernd M.
Publisher: name: Bristol : Institute of Physics Publishing
Year: 2011
Subjects: subject: electrical properties
subject: functionalization
subject: ITO
subject: porous materials
subject: thin films
subject: Conduction paths
subject: Conductive coatings
subject: Cross section
subject: Dip coating
subject: Electrical conductivity
subject: Electrical property
subject: Electrode material
subject: Enhanced conductivity
subject: Impedance measurement
subject: In-plane
subject: ITO films
subject: Meso-pores
subject: Mesoporous
subject: Mesostructures
subject: Poly(isobutylene)
subject: Pore wall
subject: Primary nanoparticles
subject: Prussian Blue
subject: Reducing atmosphere
subject: Specific resistances
subject: Template sizes
subject: Tin doped indium oxide
subject: Versatile methods
subject: Block copolymers
subject: Butenes
subject: Copolymerization
subject: Electric conductivity
subject: Electrochemical electrodes
subject: Electrochemical properties
subject: Indium
subject: Mesoporous materials
subject: Oxide films
subject: Plastic coatings
subject: Thin films
subject: Tin
subject: Film preparation
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: We present a versatile method for the preparation of mesoporous tin-doped indium oxide (ITO) thin films via dip-coating. Two poly(isobutylene)-b- poly(ethyleneoxide) (PIB-PEO) copolymers of significantly different molecular weight (denoted as PIB-PEO 3000 and PIB-PEO 20000) are used as templates and are compared with non-templated films to clarify the effect of the template size on the crystallization and, thus, on the electrochemical properties of mesoporous ITO films. Transparent, mesoporous, conductive coatings are obtained after annealing at 500 °C; these coatings have a specific resistance of 0.5 cm at a thickness of about 100 nm. Electrical conductivity is improved by one order of magnitude by annealing under a reducing atmosphere. The two types of PIB-PEO block copolymers create mesopores with in-plane diameters of 20-25 and 35-45 nm, the latter also possessing correspondingly thicker pore walls. Impedance measurements reveal that the conductivity is significantly higher for films prepared with the template generating larger mesopores. Because of the same size of the primary nanoparticles, the enhanced conductivity is attributed to a higher conduction path cross section. Prussian blue was deposited electrochemically within the films, thus confirming the accessibility of their pores and their functionality as electrode material.
Scheduling Cutting Process for Large Paper Rolls
Creators: name: Aydin, Mehmet E.
name: Taylan, Osman
Publisher: name: arXiv
Year: 2013
Subjects: subject: Other Computer Science (cs.OH)
subject: FOS: Computer and information sciences

description: Paper cutting is a simple process of slicing large rolls of paper, jumbo-reels, into various sub-rolls with variable widths based on demands risen by customers. Since the variability is high due to collected various orders into a pool, the process turns to be production scheduling problem, which requires optimisation so as to minimise the final remaining amount of paper wasted. The problem holds characteristics similar one-dimensional bin-packing problem to some extends and differs with some respects. This paper introduces a modelling attempt as a scheduling problem with an integer programming approach for optimisation purposes. Then, a constructive heuristic algorithm revising one of well-known approaches, called Best-fit algorithm, is introduced to solve the problem. The illustrative examples provided shows the near optimum solution provided with very low complexity .
description: Academic Platform Journal of Engineering and Science, 2013
Minkowski valuations in a 2-dimensional complex vector space
Creators: name: Abardia, Judit
Publisher: name: arXiv
Year: 2013
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 52B45 (Primary) 52A39 (Secondary)

description: The classification of continuous, translation invariant Minkowski valuations which are contravariant (or covariant) with respect to the complex special linear group is established in a 2-dimensional complex vector space. Every such valuation is given by the sum of a valuation of degree of homogeneity 1 and 3. In dimensions $m\geq 3$ such a classification was previously established and only valuations of a degree of homogeneity 2m-1 appear.
description: 9 pages
Pushing a compact 15 cm long ultra-high resolution drift tube ion mobility spectrometer with R = 250 to R = 425 using peak deconvolution
Creators: name: Kirk, Ansgar T.
name: Zimmermann, Stefan
Publisher: name: Berlin, Heidelberg : Springer
Year: 2015
Subjects: subject: Ion mobility spectrometry
subject: Drift tube
subject: Ultra-high resolution
subject: Deconvolution
subject: Jansson method
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau::621 | Angewandte Physik::621,3 | Elektrotechnik, Elektronik

description: Recently, we have published an analytical model describing the resolution and signal-to-noise-ratio of peaks present in an ion mobility spectrum acquired by a drift tube instrument. Based on this model, we designed a combination of a compact 10 cm long drift tube and a fast transimpedance amplifier achieving a resolution above 180. Here, we present results using an improved drift tube with slightly longer drift length of 15 cm and higher drift voltages, resulting in a resolution of R = 250 for the positive reactant ion peak and R = 230 for the negative reactant ion peak. By applying a deconvolution algorithm based on the Jansson method, a two- to three-fold separation improvement is possible in theory. However, as a larger resolution improvement than the initial resolution loss by diffusion may lead to erroneous results, we limited the resolution enhancement to 70 %, reaching a resolution of R = 425 for deconvolved spectra. The final publication is available at Springer via https://doi.org/10.1007/s12127-015-0166-z.
title: La « Journée nationale pour les victimes du communisme » aux États‑Unis. Les Américains, le communisme et le poutinisme
Creators: name: Koposov, Nicolay
Publisher: name: Politika.io
Year: 2019

description: L’article examine les attitudes américaines envers le communisme et la Russie de Poutine reflétées dans la création, par Donald Trump, de la « Journée nationale pour les victimes du communisme ». La déclaration trumpienne du 7 novembre 2017 a été l’événement central de la célébration du centenaire de la Révolution russe aux Etats-Unis. Elle continue une longue tradition de cultiver la mémoire des victimes des régimes dictatoriaux en Russie, en Chine et d’autres pays communistes, qui remonte aux années 1950 et a connu un nouvel élan avec la chute de l’empire soviétique et les débuts de la dé-communisation en Europe de l’Est. Le scandale lié à l’intervention présumée du Kremlin dans les élections américaines de 2016 (le Russiagate) a aussi contribué à la politisation de la mémoire du communisme aux États-Unis. L’auteur suggère que l’association entre la Russie d’aujourd’hui et le communisme continue à influencer les perceptions américaines de ce pays.
Untersuchungen der raumzeitlichen Entwicklung des Großen Heiligen Meeres im Kreis Steinfurt auf hydrochemischer und vegetationsökologischer Basis
Creators: name: Pikos, Tim Lukas
Publisher: name: Hannover : Institutionelles Repositorium der Leibniz Universität Hannover
Year: 2022
Subjects: subject: Hydrochemie
subject: Gewässerökologie
subject: Vegetationsökologie
subject: Heiliges Meer
subject: Dewey Decimal Classification::500 | Naturwissenschaften::550 | Geowissenschaften

description: The presented dissertation follows up on hydrochemical and vegetation ecology issues that were started during the previous bachelor and master studies at Leibniz Universität Hannover in the form of study and research projects as well as the respective final theses and are to be investigated in depth and purposefully as part of the doctorate. The focus is on spatio-temporal variable processes within a limnic ecosystem, which is exemplarily represented by the "Großes Heiliges Meer" in the nature reserve "Heiliges Meer" in the district of Steinfurt, Germany. The long-term development of the vegetation zonation of the Großes Heiliges Meer from a spatiotemporal perspective is investigated as well as the comparatively short-term hydrochemical diurnal processes of selected parameters. After this summarizing overview, in which the goal of this work is formulated, compact conceptions of the investigation area as well as the vegetation-scientific and hydrochemical-analytical investigation methodology follow. In addition, the concept of space-time dynamics is explanatorily differentiated into its spatial and temporal components in view of its importance for this work. The two large main parts contain the results and analyses of the hydrochemical diurnal dynamics in the annual cycle as well as the presentation of the vegetation composition of the present water body. Finally, the discussion of the results and a conclusion with an outlook are given. The aim of this dissertation is to present a comprehensive overview of the diurnal and annual cycles of selected hydrochemical parameters such as oxygen content for a stillwater of the North German Plain and to contrast these dynamics with spatiotemporal long-term processes such as vegetation development. In addition, however, both dynamics are highlighted in isolation with respect to their contribution to the limnetic ecosystem. Thus, this work is intended to be a complementary component for the Großes Heiliges Meer that has been intensively investigated and described from a natural science perspective by numerous works.
title: Depuis le Sud : la Révolution russe et l’Amérique latine
Creators: name: Acha, Omar
Publisher: name: Politika.io
Year: 2019

description: En revenant sur la production historique latino-américaine à l’occasion du centenaire de la Révolution russe de 1917, et dans les suites d’un colloque organisé par l’université de Cergy-Pontoise sur les projections de l’évènement en Amérique latine en novembre 2017, Omar Acha, contributeur à l’ouvrage issu de ces journées, et Carlos M. Herrera, l’un des organisateurs, entament un échange sur l’état de la recherche, ses avancées et ses impasses, en esquissant un agenda pour l’avenir. Un agenda qui suppose, en fait, de revenir sur les significations du concept de révolution, le centenaire comme scansion, la portée du comparatisme dans une vision postcoloniale, ou encore les particularités qui renferment un récit depuis l’Amérique latine, parmi d’autres problèmes historiographiques et politiques.
Perspectives to measure neutrino-nuclear neutral current coherent scattering with two-phase emission detector
Creators: name: RED Collaboration
name: Akimov, D. Yu.
name: Alexandrov, I. S.
name: Aleshin, V. I.
name: Belov, V. A.
name: Bolozdynya, A. I.
name: Burenkov, A. A.
name: Chepurnov, A. S.
name: Danilov, M. V.
name: Derbin, A. V.
name: Dmitrenko, V. V.
name: Dolgolenko, A. G.
name: Egorov, D. A.
name: Efremenko, Yu. V.
name: Etenko, A. V.
name: Gromov, M. B.
name: Gulin, M. A.
name: Ivakhin, S. V.
name: Kantserov, V. A.
name: Kaplin, V. A.
name: Karelin, A. K.
name: Khromov, A. V.
name: Kirsanov, M. A.
name: Klimanov, S. G.
name: Kobyakin, A. S.
name: Konovalov, A. M.
name: Kovalenko, A. G.
name: Kopeikin, V. I.
name: Krakhmalova, T. D.
name: Kuchenkov, A. V.
name: Kumpan, A. V.
name: Litvinovich, E. A.
name: Lukyanchenko, G. A
name: Machulin, I. N.
name: Martemyanov, V. P.
name: Nurakhov, N. N.
name: Rudik, D. G.
name: Saldikov, I. S.
name: Skorokhatov, M. D.
name: Sosnovtsev, V. V.
name: Stekhanov, V. N.
name: Strikhanov, M. N.
name: Sukhotin, S. V.
name: Tarasenkov, V. G.
name: Tikhomirov, G. V.
name: Zeldovich, O. Ya.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We propose to detect and to study neutrino neutral current coherent scattering off atomic nuclei with a two-phase emission detector using liquid xenon as a working medium. Expected signals and backgrounds are calculated for two possible experimental sites: Kalinin Nuclear Power Plant in the Russian Federation and Spallation Neutron Source at the Oak Ridge National Laboratory in the USA. Both sites have advantages as well as limitations. However the experiment looks feasible at either location. Preliminary design of the detector and supporting R&D program are discussed.
description: 16 pages, 10 figures, RED collaboration
Description of the superconducting state in the high-pressure fcc phase of platinum-hydride
Creators: name: Szczȩśniak, R.
name: Szczȩśniak, D.
name: Huras, K. M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The thermodynamic parameters of the superconducting state in PtH at the pressure 76 GPa have been examined. The calculations have been carried out in the framework of the Eliashberg formalism. It has been found that the critical temperature changes in the range from 30.6 K to 16.8 K, depending on the assumed value of the Coulomb pseudopotential (0.1, 0.2 and 0.3). The other thermodynamic quantities differ significantly from the predictions of the classical BCS theory. In particular: (i) The parameter which corresponds to the superconducting band gap reaches the values from 4.25 to 3.98. (ii) The ratio of the specific heat jump to the specific heat in the normal state takes the values from 2.07 to 1.97. (iii) Finally, the parameter for the low-temperature thermodynamic critical field is in the range from 0.145 to 0.156.
Characterization and evaluation of GPS PPP techniques for optical clock comparisons
Creators: name: Leute, Julia
Publisher: name: Hannover : Institutionelles Repositorium der Leibniz Universität Hannover
Year: 2018
Subjects: subject: frequency transfer
subject: GPS
subject: Precise Point Positioning
subject: optical clock
subject: Frequenztransfer
subject: Optische Uhr
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: The suitability of an improved GPS time and frequency transfer technique, Integer Precise Point Positioning (IPPP), for the frequency comparison of optical clocks on the 1e−16 level was investigated. An optical fiber link established between Physikalisch-Technische Bundesanstalt (PTB) and Laboratoire national de métrologie et d’essais - Système de Références Temps-Espace (LNE-SYRTE), which due to its superior stability and accuracy serves as the ground truth, was used to characterize the PPP and IPPP links between both institutes. For two different GPS stations at LNE-SYRTE, the agreement between the IPPP link and the optical fiber link was (−0.34 ± 2.66)e-16 and (−0.23 ± 0.57)e−16 for an averaging time of 1.2e6 s and 0.9e6 s respectively. Direct remote frequency comparisons of 171-Yb ion clocks developed at PTB and National Physical Laboraty (NPL) via IPPP links were performed. The impact of frequent dead time due to the limited duty cycle of the clocks on the statistical uncertainty of the clock comparison via GPS link was studied. A method to optimize the statistical uncertainty of the clock comparison was applied that uses flywheel oscillators to bridge the frequent dead time. The average fractional frequency deviation of the clocks based on the electric quadrupole transition in the 171-Yb ion was y(PTB)−y(NPL)=(−1.46 ± 0.55)e−15 including the systematic uncertainties of the optical clocks. A systematic frequency offset, not accounted for in the systematic uncertainty budgets was observed. For the clocks based on the electric octupole transition, the average fractional frequency deviation was y(PTB)−y(NPL)=(−0.1 ± 3.1)e−16, no systematic frequency offset was observed.
Charged fermion tunnelling from electrically and magnetically charged rotating black hole in de Sitter space
Creators: name: Stetsko, M. M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Thermal radiation of electrically charged fermions from rotating black hole with electric and magnetic charges in de Sitter space is considered. The tunnelling probabilities for outgoing and incoming particles are obtained and the Hawking temperature is calculated. The relation for the classical action for the particles in the black hole's background is also found.
description: 7 pages
9Be+ ion qubit control using an optical frequency comb
Creators: name: Paschke, Anna-Greta
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2017
Subjects: subject: Coherent qubit control
subject: UV frequency comb
subject: nonlinear spectral pulse modification
subject: trapped and laser-cooled ions
subject: quantum logic spectroscopy
subject: Kohärente Zustandskontrolle
subject: UV Frequenzkamm
subject: spektrale Pulsmodifikation
subject: gefangene und lasergekühlte Ionen
subject: Quantenlogikspektroskopie
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: [no abstract]
Dynamic Origin of Evolution and Social Transformation
Creators: name: Kirilyuk, Andrei P.
Publisher: name: arXiv
Year: 2012
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: We analyse the unreduced, nonperturbative dynamics of an arbitrary many-body interaction process with the help of the generalised effective potential method and reveal the well-specified universal origin of change (emergence), time and evolution in an a priori conservative, time-independent system. It appears together with the universal dynamic complexity definition, where this unified complexity conservation and transformation constitutes the essence of evolution. We then consider the detailed structure of this universal evolutionary process showing its step-wise, "punctuated" character, now provided with the exact mathematical description. Comparing the expected features of a revolutionary complexity transition near a step-like complexity upgrade with the currently observed behaviour of world's social and economic systems, we prove the necessity of complexity revolution towards the superior civilisation level of well-defined nature, the only alternative being an equally dramatic and irreversible degradation, irrespective of efforts applied to stop the crisis at the current totally saturated complexity level.
description: 23 pages, 2 figures, 24 eqs, 19 refs
Cohomological finite generation for restricted Lie superalgebras and finite supergroup schemes
Creators: name: Drupieski, Christopher M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Representation Theory (math.RT)
subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics
subject: 17B56, 20G10 (Primary) 17B55 (Secondary)

description: We prove that the cohomology ring of a finite-dimensional restricted Lie superalgebra over a field of characteristic $p > 2$ is a finitely-generated algebra. Our proof makes essential use of the explicit projective resolution of the trivial module constructed by J. Peter May for any graded restricted Lie algebra. We then prove that the cohomological finite generation problem for finite supergroup schemes over fields of odd characteristic reduces to the existence of certain conjectured universal extension classes for the general linear supergroup $GL(m|n)$ that are similar to the universal extension classes for $GL_n$ exhibited by Friedlander and Suslin.
description: 32 pages
Equisetum variegatum Schleicher
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: E. variegatum Schleicher Cat. 412und 433. Bis 2570m. l: Tanay (P.); St-Maurice (J.); La Gueulaz (P.); Vieux-Emosson (Exk. Soc. Murith.); Trient (Coquoz). - 3:Valsorey (Guyot); Bonatchesse beiFionnay (J.); Mauvoisin-Chanrion (R Chodat); Val des Dix, 2250 m (J.), ebenda 2500 m (0. Meylan); Val de Zinal (Marietan, Sulger); Gruben (J.); ob Törbel bis 2360 m (Stehler); Zermatt: Findelen, 2100-2200 m (Thellung 1919), Stellisee, 2536 m (Braun-Blanquet 1919), Weg zum Theodulpass gegen die Lychenbretter, 2570 m (Thellung 1922); Saastal (A. Keller, Hirschmann); Brig (F. Brunner); Hobschen am Simplon (Wolf). - 3a: Gabi (Becherer); Gondo (Joller); Zwischbergental (Becherer). -4: Unter Mörel, Roggenfeld, mit Muscari comosum (Becherer und Zwicky); Binntal (Becherer, Schmid); Gletsch (Wilczek). Var. alpestre Milde - 4: Rappental (B. C. W.). Var. anceps Milde- 2:Alp von Fully (Garns).
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
Folded Graphene Nanoribbons with Single and Double Closed Edges
Creators: name: Le, Nam B.
name: Woods, Lilia M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Graphene nanoribbon folds with single and double closed edges are studied using density functional theory methods. Van der Waals dispersive interactions are included via semi-empirical pairwise optimized potential. The geometrical phases of the single and double folded ribbons are obtained. The electronic structure in terms of energy needed for the folding process, van der Waals contribution, energy band gaps, and bandstructures are also calculated. The results are interpreted in terms of peculiarities of the structures and dispersion interactions. It is shown that significant modifications in the electronic structure can be achieved as a result of folding.
description: 5 pages, 5 figures
A blind-search survey for gamma-ray pulsars
Creators: name: Clark, Colin James
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2017
Subjects: subject: Pulsars
subject: gamma rays
subject: astronomy
subject: Pulsare
subject: Gammastrahlung
subject: Astronomie
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: [no abstract]
Accelerating Image Reconstruction in Three-Dimensional Optoacoustic Tomography on Graphics Processing Units
Creators: name: Wang, Kun
name: Huang, Chao
name: Kao, Yu-Jiun
name: Chou, Cheng-Ying
name: Oraevsky, Alexander A.
name: Anastasio, Mark A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Medical Physics (physics.med-ph)
subject: FOS: Physical sciences

description: Purpose: Optoacoustic tomography (OAT) is inherently a three-dimensional (3D) inverse problem. However, most studies of OAT image reconstruction still employ two-dimensional (2D) imaging models. One important reason is because 3D image reconstruction is computationally burdensome. The aim of this work is to accelerate existing image reconstruction algorithms for 3D OAT by use of parallel programming techniques. Methods: Parallelization strategies are proposed to accelerate a filtered backprojection (FBP) algorithm and two different pairs of projection/backprojection operations that correspond to two different numerical imaging models. The algorithms are designed to fully exploit the parallel computing power of graphic processing units (GPUs). In order to evaluate the parallelization strategies for the projection/backprojection pairs, an iterative image reconstruction algorithm is implemented. Computer-simulation and experimental studies are conducted to investigate the computational efficiency and numerical accuracy of the developed algorithms. Results: The GPU implementations improve the computational efficiency by factors of 1, 000, 125, and 250 for the FBP algorithm and the two pairs of projection/backprojection operators, respectively. Accurate images are reconstructed by use of the FBP and iterative image reconstruction algorithms from both computer-simulated and experimental data. Conclusions: Parallelization strategies for 3D OAT image reconstruction are proposed for the first time. These GPU-based implementations significantly reduce the computational time for 3D image reconstruction, complementing our earlier work on 3D OAT iterative image reconstruction.
A finiteness result for Siegel modular threefolds
Creators: name: Erdenberger, Cord
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2008
Subjects: subject: Siegel modular variety
subject: moduli space
subject: abelian variety
subject: Kodaira dimension
subject: Dewey Decimal Classification::500 | Naturwissenschaften::510 | Mathematik

description: [no abstract]
On Robust Face Recognition via Sparse Encoding: the Good, the Bad, and the Ugly
Creators: name: Wong, Yongkang
name: Harandi, Mehrtash T.
name: Sanderson, Conrad
Publisher: name: arXiv
Year: 2013
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: In the field of face recognition, Sparse Representation (SR) has received considerable attention during the past few years. Most of the relevant literature focuses on holistic descriptors in closed-set identification applications. The underlying assumption in SR-based methods is that each class in the gallery has sufficient samples and the query lies on the subspace spanned by the gallery of the same class. Unfortunately, such assumption is easily violated in the more challenging face verification scenario, where an algorithm is required to determine if two faces (where one or both have not been seen before) belong to the same person. In this paper, we first discuss why previous attempts with SR might not be applicable to verification problems. We then propose an alternative approach to face verification via SR. Specifically, we propose to use explicit SR encoding on local image patches rather than the entire face. The obtained sparse signals are pooled via averaging to form multiple region descriptors, which are then concatenated to form an overall face descriptor. Due to the deliberate loss spatial relations within each region (caused by averaging), the resulting descriptor is robust to misalignment & various image deformations. Within the proposed framework, we evaluate several SR encoding techniques: l1-minimisation, Sparse Autoencoder Neural Network (SANN), and an implicit probabilistic technique based on Gaussian Mixture Models. Thorough experiments on AR, FERET, exYaleB, BANCA and ChokePoint datasets show that the proposed local SR approach obtains considerably better and more robust performance than several previous state-of-the-art holistic SR methods, in both verification and closed-set identification problems. The experiments also show that l1-minimisation based encoding has a considerably higher computational than the other techniques, but leads to higher recognition rates.
Direct Determination of the HF/H2 Abundance Ratio in Interstellar Gas
Creators: name: Indriolo, Nick
name: Neufeld, D. A.
name: Seifahrt, A.
name: Richter, M. J.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We report the first detection of the v=1--0, R(0) ro-vibrational transition of HF at 2.499385 microns arising from interstellar gas. The line is seen in absorption toward 3 background sources---HD 154368, Elias 29, and AFGL 2136 IRS 1---all of which have reported H2 column densities determined from observations of H2. This allows for the first direct determination of the HF/H2 abundance ratio. We find values of N(HF)/N(H2)=1.15*10^-8 and 0.69*10^-8 for HD 154368 and Elias 29, respectively. The sight line toward AFGL 2136 IRS 1 also shows absorption from the v=1--0, R(1) transition of HF, indicating warm, dense (n_H > 10^9 cm^-3) gas, likely very close to the central protostar. Ascribing portions of the HF absorption to warm and cold gas, we find N(HF)/N(H2)=(1.7--2.9)*10^-8 and (0.33--0.58)*10^-8 for the two components, respectively. Except for the warm component toward AFGL 2136 IRS 1, all observed HF/H2 ratios are well below N(HF)/N(H2)=3.6*10^-8, the value predicted if nearly all gas-phase fluorine is in the form of HF. Models of fluorine chemistry that account for depletion onto grains are able to reproduce the results toward HD 154368, but not in the cold, dense gas toward AFGL 2136 IRS 1 and Elias 29. Most likely, some combination of simplifying assumptions made in the chemical models are responsible for these discrepancies.
description: 10 pages, 4 figures, 3 tables, accepted to ApJ
Equisetum hiemale L.
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: E. hiemale L. Cat. 411und 433. l: Van-d'en-Haut(Coquoz).- 2:RhonedämmeBranson-Saillon (Garns); Sarvazinselbei Mazem- broz (idem); Sitten (Christ); Siders (Zahn). - 3:Les Ars-dessous im ValFerret, 1940m (Maille- fer); Riddes-Bieudron (J.); La Barma und Liappey, 2230 m, im Val des Dix (J.); ob Chandolin (Garns); ob Törbel bis Lusegge, 2250 m (Stebler); Zermatt, Wegzum Theodulpass, 2160m (Thel- lung, Becherer, Zoller); gegen die Nanzlücke, 2200 m (Garns); Simplon, «nahe der Spitze des Gantersberges [=?, Verf.]... bei 8000 FUSS» (Luerssen, Die Farnpflanzen in Rabenhorsts Kryptogamenflora, S.760 [1888]). - 4: Binntal mehrfach (Binz,P.). Var. ramigerum A. Br. - 2: Chiboz ob Fully (Garns). Var. Moorei (Newman) Hook. et Arn. (var. Schleicheri Milde) - 2: Chiboz ob Fully (Garns).
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
Compactness of $ω^λ$ for $λ$ singular
Creators: name: Lipparini, Paolo
Publisher: name: arXiv
Year: 2013
Subjects: subject: General Topology (math.GN)
subject: Logic (math.LO)
subject: FOS: Mathematics
subject: Primary 54B10, 54D20, 03C75, Secondary 03C20, 03E05, 54A20

description: We characterize the compactness properties of the product of λ copies of the space ω with the discrete topology, dealing in particular with the case λ singular, using regular and uniform ultrafilters, infinitary languages and nonstandard elements. We also deal with products of uncountable regular cardinals with the order topology.
description: Treats the case \lambda\ singular only hinted in arXiv:1302.4763; v2 some very minor improvements and corrections
A new offset optimization method for signalized urban road networks
Creators: name: Almasri, Essam
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2006
Subjects: subject: Offset optimization
subject: genetic algorithm
subject: cell transmission model
subject: Dewey Decimal Classification::300 | Sozialwissenschaften, Soziologie, Anthropologie::380 | Handel, Kommunikation, Verkehr

description: [no abstract]
Modeling the mechano-chemistry of the ϕ29 DNA translocation motor
Creators: name: Perez-Carrasco, R.
name: Fiasconaro, A.
name: Falo, F.
name: Sancho, J. M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Biological Physics (physics.bio-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Biomolecules (q-bio.BM)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: We present a study of the DNA translocation of the bacteriophage ϕ29 packaging molecular motor. From the experimental available information we present a model system based in an stochastic fashing potential, which reproduces the experimental observations such as: detailed trajectories, steps and substeps, spatial correlation, and velocity. Moreover the model allows the evaluation of power and efficiency of this motor. We have found that the maximum power regime does not correspond with that of the maximum efficiency. These informations can stimulate further experiments.
description: 6 pages, 8 figures. To appear in Phys. Rev. E
Modeling The Molecular Composition in an AGN Disk
Creators: name: Harada, Nanase
name: Thompson, Todd A.
name: Herbst, Eric
Publisher: name: arXiv
Year: 2013
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We use a high-temperature chemical network to derive the molecular abundances in axisymmetric accretion disk models around active galactic nuclei (AGNs) within 100 pc using simple radial and vertical density and temperature distributions motivated by more detailed physical models. We explore the effects of X-ray irradiation and cosmic ray ionization on the spatial distribution of the molecular abundances of CO, CN, CS, HCN, HCO+, HC3N, C2H, and c-C3H2 using a variety of plausible disk structures. These simple models have molecular regions with a layer of X-ray dominated regions, a midplane without the strong influence of X-rays, and a high-temperature region in the inner portion with moderate X-ray flux where families of polyynes (C$_{\rm n}$H$_{2}$) and cyanopolyynes can be enhanced. For the high midplane density disks we explore, we find that cosmic rays produced by supernovae do not significantly affect the regions unless the star formation efficiency significantly exceeds that of the Milky Way. We highlight molecular abundance observations and ratios that may distinguish among theoretical models of the density distribution in AGN disks. Finally, we assess the importance of the shock crossing time and the accretion time relative to the formation time for various chemical species. Vertical column densities are tabulated for a number of molecular species at both the characteristic shock crossing time and steady state. Although we do not attempt to fit any particular system or set of observations, we discuss our models and results in the context of the nearby AGN NGC 1068.
description: Accepted for publication in ApJ