cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Atmospheric composition of weak G band stars: CNO and Li abundances
Creators: name: Adamczak, Jens
name: Lambert, David L.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We determined the chemical composition of a large sample of weak G band stars -- a rare class of G and K giants of intermediate mass with unusual abundances of C, N, and Li. We have observed 24 weak G band stars with the 2.7 m Harlan J. Smith Telescope at the McDonald Observatory and derived spectroscopic abundances for C, N, O, and Li, as well as for selected elements from Na - Eu. The results show that the atmospheres of weak G band stars are highly contaminated with CN-cycle products. The C underabundance is about a factor of 20 larger than for normal giants and the $^{12}$C/$^{13}$C ratio approaches the CN-cycle equilibrium value. In addition to the striking CN-cycle signature the strong N overabundance may indicate the presence of partially ON-cycled material in the atmospheres of the weak G band stars. The exact mechanism responsible for the transport of the elements to the surface has yet to be identified but could be induced by rapid rotation of the main sequence progenitors of the stars. The unusually high Li abundances in some of the stars are an indicator for Li production by the Cameron-Fowler mechanism. A quantitative prediction of a weak G band star's Li abundance is complicated by the strong temperature sensitivity of the mechanism and its participants. In addition to the unusual abundances of CN-cycle elements and Li we find an overabundance of Na that is in accordance with the NeNa chain running in parallel with the CN-cycle. Apart from these peculiarities the element abundances in a weak G band star's atmosphere are consistent with those of normal giants.
description: 18 pages, 18 figures, accepted for publication in ApJ
Thermodynamics and the structure of quantum theory
Creators: name: Krumm, M.
name: Barnum, H.
name: Barrett, J.
name: Müller, M.P.
Publisher: name: Bristol : Institute of Physics Publishing
Year: 2017
Subjects: subject: general probabilistic theories
subject: higher-order interference
subject: quantum thermodynamics
subject: second law of thermodynamics
subject: thermodynamic entropy
subject: von Neumanns thought experiment
subject: Eigenvalues and eigenfunctions
subject: Entropy
subject: Quantum theory
subject: Higher-order
subject: Probabilistic theory
subject: Quantum thermodynamics
subject: Second Law of Thermodynamics
subject: Thermodynamic entropy
subject: Thought experiments
subject: Thermodynamics
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: Despite its enormous empirical success, the formalism of quantum theory still raises fundamental questions: why is nature described in terms of complex Hilbert spaces, and what modifications of it could we reasonably expect to find in some regimes of physics? Here we address these questions by studying how compatibility with thermodynamics constrains the structure of quantum theory. We employ two postulates that any probabilistic theory with reasonable thermodynamic behaviour should arguably satisfy. In the framework of generalised probabilistic theories, we show that these postulates already imply important aspects of quantum theory, like self-duality and analogues of projective measurements, subspaces and eigenvalues. However, they may still admit a class of theories beyond quantum mechanics. Using a thought experiment by von Neumann, we show that these theories admit a consistent thermodynamic notion of entropy, and prove that the second law holds for projective measurements and mixing procedures. Furthermore, we study additional entropy-like quantities based on measurement probabilities and convex decomposition probabilities, and uncover a relation between one of these quantities and Sorkin's notion of higher-order interference. © 2017 IOP Publishing Ltd and Deutsche Physikalische Gesellschaft.
Sensitivity of human pluripotent stem cells to insulin precipitation induced by peristaltic pump-based medium circulation: Considerations on process development
Creators: name: Massai, Diana
name: Bolesani, Emiliano
name: Diaz, Diana R.
name: Kropp, Christina
name: Kempf, Henning
name: Halloin, Caroline
name: Martin, Ulrich
name: Braniste, Tudor
name: Isu, Giuseppe
name: Harms, Vanessa
name: Morbiducci, Umberto
name: Dräger, Gerald
name: Zweigerdt, Robert
Publisher: name: London : Nature Publishing Group
Year: 2017
Subjects: subject: human pluripotent stem cells
subject: hPSCs
subject: Dewey Decimal Classification::600 | Technik::610 | Medizin, Gesundheit

description: Controlled large-scale production of human pluripotent stem cells (hPSCs) is indispensable for their envisioned clinical translation. Aiming at advanced process development in suspension culture, the sensitivity of hPSC media to continuous peristaltic pump-based circulation, a well-established technology extensively used in hydraulically-driven bioreactors, was investigated. Unexpectedly, conditioning of low protein media (i.e. E8 and TeSR-E8) in a peristaltic pump circuit induced severe viability loss of hPSCs cultured as aggregates in suspension. Optical, biochemical, and cytological analyses of the media revealed that the applied circulation mode resulted in the reduction of the growth hormone insulin by precipitation of micro-sized particles. Notably, in contrast to insulin depletion, individual withdrawal of other medium protein components (i.e. bFGF, TGFβ1 or transferrin) provoked minor reduction of hPSC viability, if any. Supplementation of the surfactant glycerol or the use of the insulin analogue Aspart did not overcome the issue of insulin precipitation. In contrast, the presence of bovine or human serum albumin (BSA or HSA, respectively) stabilized insulin rescuing its content, possibly by acting as molecular chaperone-like protein, ultimately supporting hPSC maintenance. This study highlights the potential and the requirement of media optimization for automated hPSC processing and has broad implications on media development and bioreactor-based technologies. © 2017 The Author(s).
title: Новейшие биоакустические методы для исследования морской фауны
Creators: name: Градов, Олег
Publisher: name: Биомедицинская инженерия и электроника
Year: 2016

description: Предлагаются кардинально новые принципы многофакторного анализа биоакустических сигналов морской фауны на базе комплексного спектрального анализа по различным переменным "биоакустического фингерпринтинга".
title: Телеметрическая сверхвысокочастотная ЭКГ-приставка с поточным конвейерным распознаванием образов в режиме реального времени
Creators: name: Адамович, Евгений
name: Градов, Олег
Publisher: name: Биомедицинская инженерия и электроника
Year: 2015

description: Разработана технология распознавания образов в режиме реального времени для диагностики и физиологической электроморфологической кластеризации электрокардиограмм с использованием оцифровки по критерию бинаризации контраста и трансляцией сигнала с дигитайзера, выполненного в конструкте приставки к портативному электрокардиографу, по сверхвысокочастотному / радиочастотному каналу (1.2 ГГц). Обработка телеметрической информации осуществляется после поступления принятого ресивером канала через тюнер с АЦП на ЭВМ. Исходно данная система реализована для анализа многоканальных данных ЭЭГ, однако впоследствии полностью адаптирована для анализа данных c самопишущих приборов ЭКГ, работающих по тому же принципу аналоговой электрофизиологической записи.
title: Гибридизация методов spim микроскопии, спектральной эллипсометрии и SPR-спектроскопии in situ - новый путь исследования модельных мембран с интеркалированными функциональными нанокластерами, самоорганизующихся пленок и мембраномиметических слоёв
Creators: name: Градов, Олег
name: Скрынник, А.
Publisher: name: Биомедицинская инженерия и электроника
Year: 2016

description: В данной методической заметке рассматривается возможность сопряжения методов SPIM микроскопии, спектральной эллипсометрии (в том числе в магнитных полях при использовании методов измерений MOGE) и SPR-спектроскопии in situ для исследования модельных мембран с интеркалированными функциональными нанокластерами, эффектов самосборки в пленках Ленгмюра и процессов самоорганизации мембраномиметических и биоинтерфейсных пленок и слоёв.
Time Constrained Verification of Analog Circuits using Model-Checking Algorithms
Creators: name: Grabowski, Darius
name: Platte, Daniel
name: Hedrich, Lars
name: Barke, Erich
Publisher: name: Amsterdam : Elsevier BV
Year: 2006
Subjects: subject: Constraint theory
subject: Integrated circuits
subject: Mathematical models
subject: Specifications
subject: Analog Circuits
subject: CTL
subject: Model Checking
subject: Time Constraints
subject: Analog computers
subject: Dewey Decimal Classification::000 | Allgemeines, Wissenschaft::000 | Informatik, Wissen, Systeme::004 | Informatik
subject: Dewey Decimal Classification::500 | Naturwissenschaften::510 | Mathematik

description: In this contribution we present algorithms for model checking of analog circuits enabling the specification of time constraints. Furthermore, a methodology for defining time-based specifications is introduced. An already known method for model checking of integrated analog circuits has been extended to take into account time constraints. The method will be presented using three industrial circuits. The results of model checking will be compared to verification by simulation.
Ueber die christlichen Rund- und Octogon-Bauten
Creators: name: Unger, Friedrich Wilhelm
Publisher: name: Bonner Jahrbücher
Year: 2017

description: [nicht vorhanden / not available]
description: Bonner Jahrbücher, Bd. 41 (1866): Jahrbücher des Vereins von Alterthumsfreunden im Rheinlande
Image Steganography Method Based on Brightness Adjustment
Creators: name: Bassil, Youssef
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cryptography and Security (cs.CR)
subject: Multimedia (cs.MM)
subject: FOS: Computer and information sciences

description: Steganography is an information hiding technique in which secret data are secured by covering them into a computer carrier file without damaging the file or changing its size. The difference between steganography and cryptography is that steganography is a stealthy method of communication that only the communicating parties are aware of; while, cryptography is an overt method of communication that anyone is aware of, despite its payload is scribbled. Typically, an irrecoverable steganography algorithm is the algorithm that makes it hard for malicious third parties to discover how it works and how to recover the secret data out of the carrier file. One popular way to achieve irrecoverability is to digitally process the carrier file after hiding the secret data into it. However, such process is irreversible as it would destroy the concealed data. This paper proposes a new image steganography method for textual data, as well as for any form of digital data, based on adjusting the brightness of the carrier image after covering the secret data into it. The algorithm used is parameterized as it can be configured using three different parameters defined by the communicating parties. They include the amount of brightness to apply on the carrier image after the completion of the covering process, the color channels whose brightness should be adjusted, and the bytes that should carry in the secret data. The novelty of the proposed method is that it embeds bits of the secret data into the three LSBs of the bytes that compose the carrier image in such a way that does not destroy the secret data when restoring back the original brightness of the carrier image. The simulation conducted proved that the proposed algorithm is valid and correct.
description: LACSC Lebanese Association for Computational Sciences, http://www.lacsc.org. arXiv admin note: text overlap with arXiv:1212.2064
title: Корреляционная патч-кламп-спектрометрия ионных каналов - сочетание спектрального анализа электрофизиологического отклика каналома в нежестком реальном времени и методов спектроскопии ионных каналов как координационных(комплексных) структур
Creators: name: Орехов, Федор
name: Градов, Олег
Publisher: name: Биомедицинская инженерия и электроника
Year: 2016

description: Ионные каналы клеточных мембран работают в соответствии с принципами координационной химии. Известна доминирующая роль координационного числа в определении ионоселективности калиевых и натриевых каналов. Изучены лиганд-зависимые и лиганд-управляемые ионные каналы, работающие по принципу координационной супрамолекулярной фиксации. Каналообразующие ионофоры (т.н. «каналоформеры») формируют структуры, в которых катионы фиксируются связями координационного характера, в ходе чего меняется конформация комплекса; происходит подстройка координационных архитектур под селективность канала. Подобные нековалентные системы лежат в основе электрогенных функций мембран и регулируемых потенциалом систем трансмембранного переноса ионов. Эти системы могут быть охарактеризованы методами патч-кламп, т.е. локальной фиксации потенциала на мембране известны техники «anion clamp», применяемые в корреляции с анализом геометрии координации ионов металлов ионными каналами. Однако эти техники не регистрируют конформационное состояние канала in situ в момент координации иона с точностью до молекулярной структуры канала В связи с этим возникает потребность создания динамических методов анализа, позволяющих одновременно регистрировать конформационные и металломные / элементомные характеристики координации и электрофизиологическую активность при координации. Нами предлагается создание спектроскопических систем для данных целей, при использовании которых электрофизиология и отклик отдельных каналов регистрируется методами локальной фиксации потенциала (patch-clamp / voltage-clamp) с расширенной спектральной обработкой (и data mining-ом результатов), а их состояние как координационных конформационно лабильных структур спектроскопическими методами, причем в результате обработки получаются не спектры как таковые, но их характеристические для опознавания машинными методами коррелограммы.
Test signal generation for analog circuits
Creators: name: Burdiek, B.
name: Mathis, Wolfgang
Publisher: name: Göttingen : Copernicus GmbH
Year: 2003
Subjects: subject: Circuit equation
subject: Detection criteria
subject: Modern control theory
subject: Optimal control problem
subject: Optimization procedures
subject: Principle of pontryagin
subject: Test signal
subject: Transient tests
subject: Analog circuits
subject: Fault detection
subject: Optimal control systems
subject: Signal generators
subject: Variational techniques
subject: Optimization
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau::621 | Angewandte Physik::621,3 | Elektrotechnik, Elektronik

description: In this paper a new test signal generation approach for general analog circuits based on the variational calculus and modern control theory methods is presented. The computed transient test signals also called test stimuli are optimal with respect to the detection of a given fault set by means of a predefined merit functional representing a fault detection criterion. The test signal generation problem of finding optimal test stimuli detecting all faults form the fault set is formulated as an optimal control problem. The solution of the optimal control problem representing the test stimuli is computed using an optimization procedure. The optimization procedure is based on the necessary conditions for optimality like the maximum principle of Pontryagin and adjoint circuit equations.
Galaxy Clusters in the Line of Sight to Background Quasars - III Multi-Object Spectroscopy
Creators: name: Andrews, H.
name: Barrientos, L. F.
name: Lopez, S.
name: Lira, P.
name: Padilla, N.
name: Gilbank, D. G.
name: Lacerna, I.
name: Maureira, M. J.
name: Ellingson, E.
name: Gladders, M. D.
name: Yee, H. K. C.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present Gemini/GMOS-S multi-object spectroscopy of 31 galaxy cluster candidates at redshifts between 0.2 and 1.0 and centered on QSO sight-lines taken from Lopez et al. (2008). The targets were selected based on the presence of a intervening MgII absorption system at a similar redshift to that of a galaxy cluster candidate lying at a projected distance < 2 h^{-1}Mpc from the QSO sight-line (a 'photometric-hit'). The absorption systems span rest-frame equivalent widths between 0.015 and 2.028 angstroms. Our aim was 3-fold: 1) identify the absorbing galaxies and determine their impact parameters, 2) confirm the galaxy cluster candidates in the vicinity of each quasar sightline, and 3) determine whether the absorbing galaxies reside in galaxy clusters. Our main findings are: 1) the identification of 10 out of 24 absorbing galaxies with redshifts up to 1.0955. 2) The spectroscopic confirmation of 20 out of 31 cluster/group candidates, with most of the confirmed clusters/groups at z < 0.7. 3) Following from the results above, the spectroscopic confirmation of 10 out of 14 photometric hits within ~ 650 km/s from galaxy clusters/groups, in addition to 2 new ones related to galaxy group environments. These numbers imply efficiencies of 71% in finding such systems with MOS spectroscopy. This is a remarkable result since we defined a photometric hit as those cluster-absorber pairs having a redshift difference dz = 0.1. Absorbing cluster-galaxies hosting weak absorbers are consistent with lower star formation activity than the rest, which produce strong absorption and agree with typical MgII absorbing galaxies found in the literature. Our spectroscopic confirmations lend support to the selection of photometric hits made in Lopez et al. (2008).
description: 46 pages
Systematic design of output filters for audio class-D amplifiers via Simplified Real Frequency Technique
Creators: name: Hintzen, E.
name: Vennemann, T.
name: Mathis, Wolfgang
Publisher: name: Göttingen : Copernicus GmbH
Year: 2014
Subjects: subject: Active filters
subject: Audio systems
subject: Broadband networks
subject: Complex networks
subject: Design
subject: Frequency response
subject: High electron mobility transistors
subject: Impedance matching (electric)
subject: Loudspeakers
subject: MATLAB
subject: Numerical methods
subject: Passive filters
subject: Power amplifiers
subject: Broad band matching
subject: Complex load impedance
subject: Design and calculation
subject: Linear frequency response
subject: Numerical approximations
subject: Real frequency technique
subject: Reconstruction filters
subject: Simplified real frequency techniques
subject: Audio frequency amplifiers
subject: Dewey Decimal Classification::000 | Allgemeines, Wissenschaft::000 | Informatik, Wissen, Systeme::000 | Informatik, Informationswissenschaft, allgemeine Werke
subject: Dewey Decimal Classification::600 | Technik

description: In this paper a new filter design concept is proposed and implemented which takes into account the complex loudspeaker impedance. By means of techniques of broadband matching, that has been successfully applied in radio technology, we are able to optimize the reconstruction filter to achieve an overall linear frequency response. Here, a passive filter network is inserted between source and load that matches the complex load impedance to the complex source impedance within a desired frequency range. The design and calculation of the filter is usually done using numerical approximation methods which are known as Real Frequency Techniques (RFT). A first approach to systematic design of reconstruction filters for class-D amplifiers is proposed, using the Simplified Real Frequency Technique (SRFT). Some fundamental considerations are introduced as well as the benefits and challenges of impedance matching between class-D amplifiers and loudspeakers. Current simulation data using MATLAB is presented and supports some first conclusions.
title: Микрорефрактометрическая и гониометрическая томография с использованием многоосной роботизированной машинерии на базе столика Федорова, гибридизованного с пуш-интегратором Глаголева и интегрирующей платформой Андина, управляемыми шаговыми двигателями через PIC-контроллер и модули "Camac"
Creators: name: Градов, Олег
name: Нотченко, А.
name: Оганесян, В.
Publisher: name: Биомедицинская инженерия и электроника
Year: 2015

description: В статье рассматривается возможность создания новой технологии оптиче-ской рефрактометрической и гониометрической микротомографии с применениеммногоосной роботизированной механики (мехатроники) на базе столика Федорова,гибридизованного с пуш-интегратором Глаголева и интегрирующей платформой Ан-дина, ведомыми шаговыми двигателями с упралением от PIC-контроллера и модуляМУШЖ КАМАК (CAMAC).
Ultrahigh Energy Cosmic Ray Nuclei from Extragalactic Pulsars and the effect of their Galactic counterparts
Creators: name: Fang, Ke
name: Kotera, Kumiko
name: Olinto, Angela V.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The acceleration of ultrahigh energy nuclei in fast spinning newborn pulsars can explain the observed spectrum of ultrahigh energy cosmic rays and the trend towards heavier nuclei for energies above $10^{19}\,$eV as reported by the Auger Observatory. Pulsar acceleration implies a hard injection spectrum ($\sim E^{-1}$) due to pulsar spin down and a maximum energy $E_{\rm max} \sim Z \, 10^{19}$ eV due to the limit on the spin rate of neutron stars. We have previously shown that the escape through the young supernova remnant softens the spectrum, decreases slightly the maximum energy, and generates secondary nuclei. Here we show that the distribution of pulsar birth periods and the effect of propagation in the interstellar and intergalactic media modifies the combined spectrum of all pulsars. By assuming a normal distribution of pulsar birth periods centered at 300 ms, we show that the contribution of extragalactic pulsar births to the ultrahigh energy cosmic ray spectrum naturally gives rise to a contribution to very high energy cosmic rays (VHECRs, between $10^{16}$ and $10^{18}$ eV) by Galactic pulsar births. The required injected composition to fit the observed spectrum depends on the absolute energy scale, which is uncertain, differing between Auger Observatory and Telescope Array. The contribution of Galactic pulsar births can also bridge the gap between predictions for cosmic ray acceleration in supernova remnants and the observed spectrum just below the ankle, depending on the composition of the cosmic rays that escape the supernova remnant and the diffusion behavior of VHECRs in the Galaxy.
description: 21 pages, 5 figure, JCAP submitted
Towards Synthesizing Energy-efficient Controllers for Modern Production Systems from Scenario-based Specifications
Creators: name: Greenyer, Joel
name: Hansen, Christian
name: Kotlarski, Jens
name: Ortmaier, Tobias
Publisher: name: Amsterdam : Elsevier
Year: 2014
Subjects: subject: Enery-efficiency
subject: multi-axis robot systems
subject: production systems
subject: specification technique
subject: scenario-based discrete behavior specification
subject: controller synthesis
subject: trajectory generation
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik

description: Due to continuously rising electricity prices, the energy efficiency of production systems is an increasingly important factor in industrial manufacturing. One goal is therefore to reuse the braking energy of manipulator axes. The acceleration and deceleration phases of axes must be synchronized such that, ideally, the braking energy can be reused immediately within the system. In our current technique for the energy-efficient motion planning of concurrent movements of axes, we do not yet consider changing the discrete control logic to reorder movement sequences. This is difficult, since this reordering must not violate critical system requirements. In this paper, we outline a new technique for automatically synthesizing energy-efficient discrete controllers from a scenario-based specification of a production system, which we enrich with information about consumed and generated energy. Last, we provide an outlook on challenging open research problems.
title: Гибридизация coBAc, QspR/QsAR и sBGN: единство теории и практики в анализе данных и проектировании спектрально-биохимического лабораторно-диагностического и биомедицинского оборудования
Creators: name: Орехов, Федор
name: Градов, Олег
Publisher: name: Биотехносфера
Year: 2014

description: Известно, что глобальным трендом в развитии биомедицинской и фармацевтической химии является использование технологий компьютеризованной аналитики типа COBAC. Как правило, затем следует сравнение с действием известных аналитов в рамках методов QSAR/QSPR. При этом исследователя-клинициста интересуют не данные первичных измерений, а репрезентативный с позиций доказательной медицины результат физиолого-биохимического теста в сравнении с предшествовавшими средствами или их аналогами. В связи с этим необходимо прямое преобразование численных данных анализа в значения дескрипторов QSAR/QSPR и последующее преобразование их в результат квалиметрии, что и является предметом настоящей работы.
Technological CAD/CAM chain for automated polishing of geometrically complex workpieces
Creators: name: Denkena, Berend
name: Dittrich, Marc-André
name: Nguyen, Hai Nam
Publisher: name: Amsterdam : Elsevier B.V.
Year: 2018
Subjects: subject: Quality assurance
subject: Automation
subject: Manufacturing engineering
subject: Polishing
subject: Computer science
subject: Surface finish
subject: Motion planning
subject: Dewey Decimal Classification::600 | Technik
subject: Dewey Decimal Classification::600 | Technik::670 | Industrielle und handwerkliche Fertigung

description: Despite recent advances in automation technology, geometrically complex workpieces are still often finished manually. An example for this is the post-processing of dental prostheses, which display exceptionally high surface requirements. Aiming for an improved quality assurance, this article presents a methodology for an adaptive tool path planning for polishing of geometrically complex workpieces. For this purpose, the initial roughness of the workpiece is determined using a machine-integrated measuring system. Next, suitable process parameters are selected based on machine knowledge and the adapted NC code of the polishing process is generated and simulated. The results of the simulation and the actual polishing process are compared afterwards and transformed into process knowledge. Thus, the adaption of the process parameters and the quality of the simulation are continuously improved. The article highlights the implementation of the methodology with special emphasis on the selection of the process parameters.
Scleranthus annuus
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: E. annuus (L.) Pers. s. coll. (Stenactis annua Nees, S. bellidiflora A. Br.) Cat. 186. Eingebürgert. l: IVIonthey, Rasenplatz nördlich des Bahnhofes (Thommen 1953). - 3: Martigny, verwildernd im neuen Friedhof (seit 1920) und sich von hier aus verbreitend (F.). Var. ramosus (Walter) Hylander (E. ramosus Britton, Sterns et Poggenburg [non Raf.], E. strigosus Mühlenb., E.annuus auct.mult., S.ramosa Domin, S.annua ssp.strigosa Soö)- Vielfach inDistr. l (vgl. Cat.); keine neuen Fundbezirke bekanntgeworden.
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
Generalized AG codes as evaluation codes
Creators: name: Calderini, Marco
name: Sala, Massimiliano
Publisher: name: arXiv
Year: 2012
Subjects: subject: Commutative Algebra (math.AC)
subject: FOS: Mathematics

description: We extend the construction of GAG codes to the case of evaluation codes. We estimate the minimum distance of these extended evaluation codes and we describe the connection to the one-point GAG codes.
Spectral Total-Variation Processing of Shapes: Theory and Applications
Creators: name: Brokman, Jonathan
name: Burger, Martin
name: Gilboa, Guy
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computational Geometry (cs.CG)
subject: FOS: Computer and information sciences

description: We present an analysis of total-variation (TV) on non-Euclidean parameterized surfaces, a natural representation of the shapes used in 3D graphics. Our work explains recent experimental findings in shape spectral TV [Fumero et al., 2020] and adaptive anisotropic spectral TV [Biton and Gilboa, 2022]. A new way to generalize set convexity from the plane to surfaces is derived by characterizing the TV eigenfunctions on surfaces. Relationships between TV, area, eigenvalue, eigenfunctions and their discontinuities are discovered. Further, we expand the shape spectral TV toolkit to include versatile zero-homogeneous flows demonstrated through smoothing and exaggerating filters. Last but not least, we propose the first TV-based method for shape deformation, characterized by deformations along geometrical bottlenecks. We show these bottlenecks to be aligned with eigenfunction discontinuities. This research advances the field of spectral TV on surfaces and its application in 3D graphics, offering new perspectives for shape filtering and deformation.
description: 19 pages, 20 figures
Threshold $π^0$ photoproduction in relativistic chiral perturbation theory
Creators: name: Hilt, Marius
name: Scherer, Stefan
name: Tiator, Lothar
Publisher: name: arXiv
Year: 2013
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We present a calculation of $π^0$ photoproduction on the proton in manifestly Lorentz-invariant baryon chiral perturbation theory up to and including chiral order $q^4$. With the results we analyze the latest $π^0$ photoproduction data in the threshold region obtained at the Mainz Microtron. In the calculation of observables and the fit of the low-energy constants, we take $S$, $P$, and $D$ waves into account. We compare the results for the multipoles with the corresponding single-energy analysis. Furthermore, we also fit the $O(q^4)$ heavy-baryon chiral perturbation theory calculation and compare both results. We provide predictions for several polarization observables for future experiments. Finally, we discuss the $β$ parameter of the unitarity cusp which is related to the breaking of isospin symmetry.
description: 21 pages, 9 figures
Electro-optical switching by liquid-crystal controlled metasurfaces
Creators: name: Decker, Manuel
name: Kremers, Christian
name: Minovich, Alexander
name: Staude, Isabelle
name: Miroshnichenko, Andrey E.
name: Chigrin, Dmitry
name: Neshev, Dragomir N.
name: Jagadish, Chennupati
name: Kivshar, Yuri S.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We study the optical response of a metamaterial surface created by a lattice of split-ring resonators covered with a nematic liquid crystal and demonstrate millisecond timescale switching between electric and magnetic resonances of the metasurface. This is achieved due to a high sensitivity of liquid-crystal molecular reorientation to the symmetry of the metasurface as well as to the presence of a bias electric field. Our experiments are complemented by numerical simulations of the liquid-crystal reorientation.
description: 6 pages, 3 figures
Interessanter Grabfund bei Buschhoven
Creators: name: Freudenberg, Johannes
Publisher: name: Bonner Jahrbücher
Year: 2017

description: [nicht vorhanden / not available]
description: Bonner Jahrbücher, Bd. 41 (1866): Jahrbücher des Vereins von Alterthumsfreunden im Rheinlande
Weak-star quasi norm attaining operators
Creators: name: Choi, Geunsu
name: Jung, Mingu
name: Kim, Sun Kwang
name: Martin, Miguel
Publisher: name: arXiv
Year: 2022
Subjects: subject: Functional Analysis (math.FA)
subject: FOS: Mathematics

description: For Banach spaces $X$ and $Y$, a bounded linear operator $T\colon X \longrightarrow Y^*$ is said to weak-star quasi attain its norm if the $σ(Y^*,Y)$-closure of the image by $T$ of the unit ball of $X$ intersects the sphere of radius $\|T\|$ centred at the origin in $Y^*$. This notion is inspired by the quasi-norm attainment of operators introduced and studied in \cite{CCJM}. As a main result, we prove that the set of weak-star quasi norm attaining operators is dense in the space of bounded linear operators regardless of the choice of the Banach spaces, furthermore, that the approximating operator can be chosen with additional properties. This allows us to distinguish the properties of weak-star quasi norm attaining operators from those of quasi norm attaining operators. It is also shown that, under certain conditions, weak-star quasi norm attaining operators share numbers of equivalent properties with other types of norm attaining operators, but that there are also a number of situations in which they behave differently from the others.
description: 16 pages
Mechanical properties of nanosheets and nanotubes investigated using a new geometry independent volume definition
Creators: name: Wagner, Philipp
name: Ivanovskaya, Viktoria V.
name: Rayson, Mark J.
name: Briddon, Patrick R.
name: Ewels, Christopher P.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Cross-sectional area and volume become difficult to define as material dimensions approach the atomic scale. This limits the transferability of macroscopic concepts such as Young's modulus. We propose a new volume definition where the enclosed nanosheet or nanotube average electron density matches that of the parent layered bulk material. We calculate the Young's moduli for various nanosheets (including graphene, BN and MoS2) and nanotubes. Further implications of this new volume definition such as a Fermi level dependent Young's modulus and out-of-plane Poisson's ratio are shown.
Kurzer Bericht über die für das Museum in Basel erworbene Schmidsche Sammlung von Alterthümern aus Augst, von Wilhelm Vischer, Basel 1858 / Erster Nachtrag zu den Inscriptiones confoederationis helveticae latinae von Theodor Mommsen, Zürich 1865
Creators: name: Becker, Jakob
Publisher: name: Bonner Jahrbücher
Year: 2017

description: Rezension zu: Kurzer Bericht über die für das Museum in Basel erworbene Schmidsche Sammlung von Alterthümern aus Augst von Prof. Wilhelm Vischer. Basel 1858.

Rezension zu: Erster Nachtrag zu den Inscriptiones confoederationis helveticae latinae von Theodor Mommsen. Gesammelt und herausgegeben von F. Keller und H. Meyer. In den Mittheilungen der antiquarischen Gesellschaft in Zürich (1865) Band XV Heft 5.
description: Bonner Jahrbücher, Bd. 41 (1866): Jahrbücher des Vereins von Alterthumsfreunden im Rheinlande
Characterization of fluorescence collection optics integrated with a micro-fabricated surface electrode ion trap
Creators: name: Clark, Craig R.
name: Chou, Chin-wen
name: Ellis, A. R.
name: Hunker, Jeff
name: Kemme, Shanalyn A.
name: Maunz, Peter
name: Tabakov, Boyan
name: Tigges, Chris
name: Stick, Daniel L.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Optics (physics.optics)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: One of the outstanding challenges for ion trap quantum information processing is to accurately detect the states of many ions in a scalable fashion. In the particular case of surface traps, geometric constraints make imaging perpendicular to the surface appealing for light collection at multiple locations with minimal cross-talk. In this report we describe an experiment integrating Diffractive Optic Elements (DOE's) with surface electrode traps, connected through in-vacuum multi-mode fibers. The square DOE's reported here were all designed with solid angle collection efficiencies of 3.58%; with all losses included a detection efficiency of 0.388% (1.02% excluding the PMT loss) was measured with a single Ca+ ion. The presence of the DOE had minimal effect on the stability of the ion, both in temporal variation of stray electric fields and in motional heating rates.
description: 6 pages, 8 figures
Surface roughness of real operationally used compressor blade and blisk
Creators: name: Gilge, Philipp
name: Kellersmann, Andreas
name: Friedrichs, Jens
name: Seume, Jörg R.
Publisher: name: London : SAGE Publications Ltd.
Year: 2019
Subjects: subject: aircraft engine
subject: blisk blades
subject: compressor blades
subject: operationally stressed surfaces
subject: Surface roughness
subject: Aircraft
subject: Aircraft engines
subject: Compressors
subject: Deterioration
subject: Engines
subject: High pressure effects
subject: Aircraft engine maintenance
subject: Compressor blades
subject: Compressor performance
subject: High pressure compressor
subject: Roughness parameters
subject: Specific fuel consumption
subject: Three-dimensional laser scanning
subject: Dewey Decimal Classification::300 | Sozialwissenschaften, Soziologie, Anthropologie::380 | Handel, Kommunikation, Verkehr
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: Deterioration of axial compressors is in general a major concern in aircraft engine maintenance. Among other effects, roughness in high-pressure compressor reduces the pressure rise and thus efficiency, thereby increasing the specific fuel consumption of an engine. Therefore, it is important to improve the understanding of roughness on compressor blading and their impact on compressor performance. To investigate the surface roughness of rotor blades of a compressors, different stages of an axial high-pressure compressor and a first-stage blisk (BLade–Integrated–dISK) of a regional aircraft engine is measured by a three-dimensional laser scanning microscope. Fundamental types of roughness structures can be identified: impacts in different sizes, depositions as isotropically distributed single elements with steep flanks and anisotropic roughness structures direct approximately normal to the flow direction. To characterise and quantify the roughness structures in more detail, roughness parameters were determined from the measured surfaces. The quantification showed that the roughness height varies through the compressor depending on the stage, position and the blade side. Overall complex roughness structures of different shape, height and size are detected regardless of the type of the blades.
n-particle quantum statistics on graphs
Creators: name: Harrison, Jonathan M.
name: Keating, Jonathan P.
name: Robbins, Jonathan M.
name: Sawicki, Adam
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mathematical Physics (math-ph)
subject: Algebraic Topology (math.AT)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We develop a full characterization of abelian quantum statistics on graphs. We explain how the number of anyon phases is related to connectivity. For 2-connected graphs the independence of quantum statistics with respect to the number of particles is proven. For non-planar 3-connected graphs we identify bosons and fermions as the only possible statistics, whereas for planar 3-connected graphs we show that one anyon phase exists. Our approach also yields an alternative proof of the structure theorem for the first homology group of n-particle graph configuration spaces. Finally, we determine the topological gauge potentials for 2-connected graphs.
description: 34 pages, 21 figures
Bericht an den Verein von Alterthumsfreunden der Rheinlande über die im Herbste 1865 bei Coblenz in der Mosel entdeckten Pfahl- und Steintrümmer einer Brücke und deren Beziehung zum alten Confluentes
Creators: name: Eltester, Leopold Von
Publisher: name: Bonner Jahrbücher
Year: 2017

description: [nicht vorhanden / not available]
description: Bonner Jahrbücher, Bd. 42 (1867): Jahrbücher des Vereins von Alterthumsfreunden im Rheinlande
Sensor integration for a hydraulic clamping system
Creators: name: Denkena, Berend
name: Dahlmann, Dominik
name: Kiesner, Johann
Publisher: name: Amsterdam : Elsevier
Year: 2014
Subjects: subject: strain gauges
subject: sensor integration
subject: hydraulic clamping-elements
subject: hydraulic swing clamp
subject: clamping system
subject: condition monitoring
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik

description: Failures in workpiece positioning influence the machining conditions and outcome of machine tools directly. Hence, the monitoring by a sensor integrated clamping system to avoid rejects is subject of the presented work. The overall aim is to integrate sensory capabilities in a hydraulic clamping system typically used in series production within a joint research project. This paper gives a general survey of the targeted application and focuses on the sensor integration. It shows the qualification of strain gauges for indirect measurement of oil pressure in the hydraulic clamping element and the potential use of the same strain gauges to measure further monitoring objectives.
Zu den Bestattungen frühalamannischer Zeit in der Sontheimer Höhle im Alb-Donau-Kreis
Creators: name: Schach-Dörges, Helga
Publisher: name: Fundberichte aus Baden-Württemberg
Year: 2016

description: [nicht vorhanden / not available]
description: Fundberichte aus Baden-Württemberg, Bd. 31 (2010): Fundberichte aus Baden-Württemberg
Ein germanischer Grabfund der Völkerwanderungszeit aus Schwerin (Mecklenburg)
Creators: name: Sprockhoff, Ernst
Publisher: name: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts
Year: 2017

description: [nicht erschienen / not available]
description: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts, Bd. 18, Nr. 1 (1934)
Römisches Sarkophagfragment in Mannheim
Creators: name: Schoppa, Helmut
Publisher: name: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts
Year: 2017

description: [nicht erschienen / not available]
description: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts, Bd. 18, Nr. 2 (1934)
Duality-symmetric Action for Electromagnetic Theory with Electric and Magnetic Sources
Creators: name: Lee, Choonkyu
name: Min, Hyunsoo
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: For the SL(2,\textbf{R}) duality-invariant generalization of Maxwell electrodynamics in the presence of both electric and magnetic sources, we formulate a local, manifestly duality-symmetric, Zwanziger-type action by introducing a pair of four-potentials $A^μ$ and $B^μ$ in a judicious way. On the two potentials $A^μ$ and $B^μ$ the SL(2,\textbf{R}) duality transformation acts in a simple linear manner. In quantum theory including charged source fields, this action can be recast as a SL(2,\textbf{Z})-invariant action. Also given is a Zwanziger-type action for SL(2,\textbf{R}) duality-invariant Born-Infeld electrodynamics which can be important for D-brane dynamics in string theory.
description: 20 pages
Stress Reduction in Sputtered Thin NiFe 81/19 Layers for Magnetic Field Sensors
Creators: name: Jogschies, L.
name: Rittinger, J.
name: Klaas, D.
name: Wurz, M.C.
Publisher: name: Amsterdam : Elsevier
Year: 2016
Subjects: subject: Flexible Substrate
subject: Collaborative Research Center 653
subject: stress in metallic thin films
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik

description: Flexible magnetic field sensors using the anisotropic magnetoresistive effect that have been developed within the Collaborative Research Center 653 are to be transferred into industrial applications. Occurring challenges result from interactions between the flexible polyimide substrate and the functional layer namely a thin NiFe 81/19 film deposited by a DC sputter process. We have optimized the DC sputter process with regard to stress and roughness reduction.
High-frequency homogenization of zero frequency stop band photonic and phononic crystals
Creators: name: Antonakakis, Tryfon
name: Craster, Richard
name: Guenneau, Sebastien
Publisher: name: arXiv
Year: 2013
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We present an accurate methodology for representing the physics of waves, for periodic structures, through effective properties for a replacement bulk medium: This is valid even for media with zero frequency stop-bands and where high frequency phenomena dominate. Since the work of Lord Rayleigh in 1892, low frequency (or quasi-static) behaviour has been neatly encapsulated in effective anisotropic media. However such classical homogenization theories break down in the high-frequency or stop band regime. Higher frequency phenomena are of significant importance in photonics (transverse magnetic waves propagating in infinite conducting parallel fibers), phononics (anti-plane shear waves propagating in isotropic elastic materials with inclusions), and platonics (flexural waves propagating in thin-elastic plates with holes). Fortunately, the recently proposed high-frequency homogenization (HFH) theory is only constrained by the knowledge of standing waves in order to asymptotically reconstruct dispersion curves and associated Floquet-Bloch eigenfields: It is capable of accurately representing zero-frequency stop band structures. The homogenized equations are partial differential equations with a dispersive anisotropic homogenized tensor that characterizes the effective medium. We apply HFH to metamaterials, exploiting the subtle features of Bloch dispersion curves such as Dirac-like cones, as well as zero and negative group velocity near stop bands in order to achieve exciting physical phenomena such as cloaking, lensing and endoscope effects. These are simulated numerically using finite elements and compared to predictions from HFH. An extension of HFH to periodic supercells enabling complete reconstruction of dispersion curves through an unfolding technique is also introduced.