cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Spatial separation effects in a guiding procedure in a modified ion-beam-sputtering process
Creators: name: Malobabic, Sina
name: Jupé, Marco
name: Ristau, Detlev
Publisher: name: London : Nature Publishing Group
Year: 2016
Subjects: subject: EM field separation
subject: ion beam sputtering
subject: plasma guiding
subject: Coatings
subject: Deposition
subject: Ion sources
subject: Refractive index
subject: Sputtering
subject: EM field
subject: High reflection mirrors
subject: Ion-beam sputtering
subject: Mechanical components
subject: Mechanical movements
subject: Particle contamination
subject: Spatial separation
subject: State of the art
subject: Ion beams
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: Cloud computing is a paradigm in which information is permanently stored in servers on the Internet and cached temporarily on clients. Virtual private network (VPN) is the most widely used technology for secure cloud access. Unfortunately, VPN-based cloud services become unavailable when a VPN failure occurs. In this paper, we propose a new scheme to improve the availability of VPN connections against such failures, called high-availability virtual communication (HAVC). Unlike most of the multipath transmission schemes in the literature, the proposed scheme is implemented by using a virtualization technique, and its protocol functions are independent of existing networks - potential clients are not required to modify their applications or operating systems. Simulation results show that the HAVC can not only tolerate VPN failures but also achieve high transmission performance.
Salix hastata
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: S. hastata X helvetica Die Angaben aus dem Wallis sind von R. BUSER im Cat. 330 widerrufen worden; also sind die vor 1895 geschriebenen, die alten Fundorte Zermatt und Binntal betreffenden Ausführungen bei Buser Lit. 1940, S. 732, überholt. Neuerdings festgestellt: 3: Valsorey, bei Aval, 2100 m (Guyot 1917; nach Revision durch F. Heinis 1940 gehört nur ein Teil des Guyotschen Materials hierher, ein anderer ist S.helvetica). - 4: Gletsch (Wilczek; ob sicher?).
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
Entanglement dynamics of non-inertial observers in a correlated environment
Creators: name: Ramzan, M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Effect of decoherence and correlated noise on the entanglement of X-type state of the Dirac fields in the non-inertial frame is investigated. A two qubit X-state is considered to be shared between the partners where Alice is in inertial frame and Rob in an accelerated frame. The concurrence is used to quantify the entanglement of the X-state system influenced by time correlated amplitude damping, depolarizing and bit flip channels. It is seen that amplitude damping and bit flip channels heavily influence the entanglement of the system as compared to the depolarizing channel. It is found possible to avoid entanglement sudden death (ESD) for all the channels under consideration for μ>0.75 for any type of initial state. No ESD behaviour is seen for depolarizing channel in the presence of correlated noise for entire range of decoherence parameter p and Rob's acceleration r. It is also seen that the effect of environment is much stronger than that of acceleration of the accelerated partner. Furthermore, it is investigated that correlated noise compensates the loss of entanglement caused by the Unruh effect.
description: 18 pages, 6 .eps figures, published online 14 January 2012 in Quantum Information Processing, Springer. arXiv admin note: substantial text overlap with arXiv:1204.1900; and text overlap with arXiv:1105.1216 by other authors
Demonstration of zero optical backscattering from single nanoparticles
Creators: name: Person, Steven
name: Jain, Manish
name: Lapin, Zachary
name: Saenz, Juan Jose
name: Wicks, Gary
name: Novotny, Lukas
Publisher: name: arXiv
Year: 2012
Subjects: subject: Optics (physics.optics)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We present the first experimental demonstration of zero backscattering from nanoparticles at op- tical frequencies as originally discussed by Kerker et. al. [M. Kerker, D. Wang, and C. Giles, J. Opt. Soc. A 73, 765 (1983)]. GaAs pillars were fabricated on a fused silica substrate and the spectrum of the backscattered radiation was measured in the wavelength range 600-1000 nm. Suppression of backscattering occurred at ~725 nm, agreeing with calculations based on the discrete dipole approximation. Particles with zero backscattering provide new functionality for metamaterials and optical antennas.
description: 4 pages, 4 figures
Estimating PageRank deviations in crawled graphs
Creators: name: Holzmann, Helge
name: Anand, Avishek
name: Khosla, Megha
Publisher: name: Heidelberg : Springer
Year: 2019
Subjects: subject: Crawls
subject: PageRank
subject: Ranking deviations
subject: Dewey Decimal Classification::000 | Allgemeines, Wissenschaft::000 | Informatik, Wissen, Systeme::004 | Informatik

description: Most real-world graphs collected from the Web like Web graphs and social network graphs are partially discovered or crawled. This leads to inaccurate estimates of graph properties based on link analysis such as PageRank. In this paper we focus on studying such deviations in ordering/ranking imposed by PageRank over crawled graphs. We first show that deviations in rankings induced by PageRank are indeed possible. We measure how much a ranking, induced by PageRank, on an input graph could deviate from the original unseen graph. More importantly, we are interested in conceiving a measure that approximates the rank correlation among them without any knowledge of the original graph. To this extent we formulate the HAK measure that is based on computing the impact redistribution of PageRank according to the local graph structure. We further propose an algorithm that identifies connected subgraphs over the input graph for which the relative ordering is preserved. Finally, we perform extensive experiments on both real-world Web and social network graphs with more than 100M vertices and 10B edges as well as synthetic graphs to showcase the utility of HAK and our High-fidelity Component Selection approach.
Citation needed: A taxonomy and algorithmic assessment of Wikipedia's verifiability
Creators: name: Redi, Miriam
name: Morgan, Jonathan
name: Fetahu, Besnik
name: Taraborelli, Dario
Publisher: name: New York, NY : Association for Computing Machinery, Inc
Year: 2019
Subjects: subject: Citations
subject: Crowdsourcing
subject: Neural Networks
subject: Wikipedia
subject: Large dataset
subject: Neural networks
subject: Taxonomies
subject: Algorithmic model
subject: External sources
subject: Guiding principles
subject: Large-scale dataset
subject: Secondary sources
subject: Wikipedia articles
subject: Websites
subject: Konferenzschrift
subject: Dewey Decimal Classification::000 | Allgemeines, Wissenschaft::000 | Informatik, Wissen, Systeme::004 | Informatik

description: Wikipedia is playing an increasingly central role on the web, and the policies its contributors follow when sourcing and fact-checking content affect million of readers. Among these core guiding principles, verifiability policies have a particularly important role. Verifiability requires that information included in a Wikipedia article be corroborated against reliable secondary sources. Because of the manual labor needed to curate Wikipedia at scale, however, its contents do not always evenly comply with these policies. Citations (i.e. reference to external sources) may not conform to verifiability requirements or may be missing altogether, potentially weakening the reliability of specific topic areas of the free encyclopedia. In this paper, we aim to provide an empirical characterization of the reasons why and how Wikipedia cites external sources to comply with its own verifiability guidelines. First, we construct a taxonomy of reasons why inline citations are required, by collecting labeled data from editors of multiple Wikipedia language editions. We then crowdsource a large-scale dataset of Wikipedia sentences annotated with categories derived from this taxonomy. Finally, we design algorithmic models to determine if a statement requires a citation, and to predict the citation reason. We evaluate the accuracy of such models across different classes of Wikipedia articles of varying quality, and on external datasets of claims annotated for fact-checking purposes.
TableNet: An approach for determining fine-grained relations for wikipedia tables
Creators: name: Fetahu, Besnik
name: Anand, Avishek
name: Koutraki, Maria
Publisher: name: New York, NY : Association for Computing Machinery, Inc
Year: 2019
Subjects: subject: Semantics
subject: Equivalent relation
subject: Fine grained
subject: High-accuracy
subject: Wikipedia
subject: World Wide Web
subject: Konferenzschrift
subject: Dewey Decimal Classification::000 | Allgemeines, Wissenschaft::000 | Informatik, Wissen, Systeme::004 | Informatik

description: We focus on the problem of interlinking Wikipedia tables with fine-grained table relations: equivalent and subPartOf. Such relations allow us to harness semantically related information by accessing related tables or facts therein. Determining the type of a relation is not trivial. Relations are dependent on the schemas, the cell-values, and the semantic overlap of the cell values in tables. We propose TableNet, an approach for interlinking tables with subPartOf and equivalent relations. TableNet consists of two main steps: (i) for any source table we provide an efficient algorithm to find candidate related tables with high coverage, and (ii) a neural based approach that based on the table schemas and data, determines with high accuracy the fine-grained relation. Based on an extensive evaluation with more than 3.2M tables, we show that TableNet retains more than 88% of relevant tables pairs, and assigns table relations with an accuracy of 90%.
Door opening and traversal with an industrial cartesian impedance controlled mobile robot
Creators: name: Stuede, Marvin
name: Nuelle, Kathrin
name: Tappe, Svenja
name: Ortmaier, Tobias
Publisher: name: Piscataway, NJ, USA : Institute of Electrical and Electronics Engineers Inc.
Year: 2019
Subjects: subject: Robot kinematics
subject: Impedance
subject: Task analysis
subject: Three-dimensional displays
subject: Robot sensing systems
subject: End effectors
subject: Dewey Decimal Classification::600 | Technik
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: This paper presents a holistic approach for door opening with a Cartesian impedance controlled mobile robot, a KUKA KMR iiwa. Based on a given map of the environment, the robot autonomously detects the door handle, opens doors and traverses doorways without knowledge of a door model or the door's geometry. The door handle detection uses a convolutional neural network (CNN)-based architecture to obtain the handle's bounding box in a RGB image that works robustly for various handle shapes and colors. We achieve a detection rate of 100% for an evaluation set of 38 different door handles, by always selecting for highest confidence score. Registered depth data segmentation defines the door plane to construct a handle coordinate frame. We introduce a control structure based on the task frame formalism that uses the handle frame for reference in an outer loop for the manipulator's impedance controller. It runs in soft real-time on an external computer with approximately 20 Hz since access to inner controller loops is not available for the KMR iiwa. With the approach proposed in this paper, the robot successfully opened and traversed for 22 out of 25 trials at five different doors.
Implementation of non-equilibrium vertex corrections in KKR: transport through disordered layers
Creators: name: Franz, Christian
name: Czerner, Michael
name: Heiliger, Christian
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The theoretical description of modern nanoelectronic devices requires a quantum mechanical treatment and often involves disorder, e.g. form alloys. Therefore, the ab initio theory of transport using non-equilibrium Green's functions is extended to the case of disorder described by the coherent potential approximation. This requires the calculation of non-equilibrium vertex corrections. We implement the vertex corrections in a Korringa-Kohn-Rostoker multiple scattering scheme. In order to verify our implementation and to demonstrate the accuracy and applicability we investigate a system of an iron-cobalt alloy layer embedded in copper. The results obtained with the coherent potential approximation are compared to supercell calculations. It turns out that vertex corrections play an important role for this system.
description: 17 pages, 4 figures
Global Flow of Glasma in High Energy Nuclear Collisions
Creators: name: Chen, Guangyao
name: Fries, Rainer J.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We discuss the energy flow of the classical gluon fields created in collisions of heavy nuclei at collider energies. We show how the Yang-Mills analoga of Faraday's Law and Gauss' Law predict the initial gluon flux tubes to expand or bend. The resulting transverse and longitudinal structure of the Poynting vector field has a rich phenomenology. Besides the well known radial and elliptic flow in transverse direction, classical quantum chromodynamics predicts a rapidity-odd transverse flow that tilts the fireball for non-central collisions, and it implies a characteristic flow pattern for collisions of non-symmetric systems $A+B$. The rapidity-odd transverse flow translates into a directed particle flow $v_1$ which has been observed at RHIC and LHC. The global flow fields in heavy ion collisions could be a powerful check for the validity of classical Yang-Mill dynamics in high energy collisions.
description: 7 figures
Chromospheric mass motions and intrinsic sunspot rotations for NOAA Active Regions 10484, 10486, and 10488 using ISOON data
Creators: name: Hardersen, Paul S.
name: Balasubramaniam, K. S.
name: Shkolyar, Svetlana
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: This work utilizes Improved Solar Observing Optical Network (ISOON: Neidig et al. 2003) continuum (630.2 nm) and Hα (656.2 nm) data to: 1) detect and measure intrinsic sunspot rotations occurring in the photosphere and chromosphere, 2) identify and measure chromospheric filament mass motions, and 3) assess any large-scale photospheric and chromospheric mass couplings. Significant results from October 27-29, 2003, using the techniques of Brown et al. (2003), indicate significant counter-rotation between the two large sunspots in NOAA AR 10486 on October 29, as well as discrete filament mass motions in NOAA AR 10484 on October 27 that appears associated with at least one C-class solar flare.
description: 20 pages, 1 table, 7 figures
Comment on `Determination of light quark masses from $η\to 3π^0$'
Creators: name: Zdráhal, Martin
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In the commented paper [PRD 78, 034032 (2008); arXiv:0803.2956] Deandrea et al. claim that they provide a model-independent determination of the quantity $B_0(m_d-m_u)$ based on the analysis of the decay of eta to three neutral pions that takes the strong-interaction correction as an unknown parameter. In the following we show that the two constraints presented there as independent equations are in fact two approximations of a single constraint connecting together $B_0(m_d-m_u)$ with the strong-interaction correction to the $η\to3π^0$ decay amplitude. Thus, without some additional information on the latter (such as its correct value at least at one kinematic point) it does not lead to any determination of $B_0(m_d-m_u)$ and the numerical values presented there should not be taken seriously. We have also found that the numerical result for the studied quantity obtained in the commented paper is just an accidental number stemming from some numerical errors that had occurred in the computations presented there.
description: 5 pages, accepted for publication in Phys. Rev. D
Normal state bottleneck and nematic fluctuations from femtosecond quasi-particle relaxation dynamics in Sm(Fe,Co)AsO
Creators: name: Mertelj, T.
name: Stojchevska, L.
name: Zhigadlo, N. D.
name: Karpinski, J.
name: Mihailovic, D.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We investigate temperature and fluence dependent dynamics of the photoexcited quasi-particle relaxation and low-energy electronic structure in electron-doped 1111-structure Sm(Fe_{0.93}Co_{0.07})AsO single crystal. We find that the behavior is qualitatively identical to the 122-structure Ba(Fe,Co)_{2}As_{2} including the presence of a normal state pseudogap and a marked 2-fold symmetry breaking in the tetragonal phase that we relate to the electronic nematicity. The 2-fold symmetry breaking appears to be a general feature of the electron doped iron pnictides.
Early thermalization of quark-gluon matter by elastic 3-to-3 scattering
Creators: name: Xu, Xiao-Ming
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The early thermalization is crucial to the quark-gluon plasma as a perfect liquid and results from many-body scattering. We calculate squared amplitudes for elastic parton-parton-parton scattering in perturbative QCD. Transport equations with the squared amplitudes are established and solved to obtain the thermalization time of initially produced quark-gluon matter and the initial temperature of quark-gluon plasma. We find that the thermalization times of quark matter and gluon matter are different.
description: 5 pages, 1 figure, proceedings for Extreme QCD 2012
title: Zwischen Heidentum und Christentum - Die Glaubensweit der ersten Franken in Franken. Zur Ausstellung »Die ersten Franken in Franken« im Germanischen Nationalmuseum vom 22. September 1994 bis 26. Februar 1995
Creators: name: Nawroth, Manfred
Publisher: name: University Library Heidelberg
Year: 2016

description: [nicht vorhanden / not available]
title: Effects of Potassium Source and Rate on Yield, Quality, and Leaf Chemistry of Dark and Burley Tobacco, and Residual Effects of Soil K Levels
Creators: name: Keeney, Andrea Brooke
Publisher: name: University of Kentucky Libraries
Year: 2019

description: Field trials were conducted in 2016, 2017 and 2018 with dark fire-cured, dark air-cured, and burley tobacco at Princeton, Murray and Lexington Kentucky. Tobacco variety used in 2016 was a low converter (LC) variety, varieties used in 2017 and 2018 were LC and higher converter (HC) varieties. Potassium sources used at all locations and in all years were potassium sulfate (K2SO4) and potassium chloride (KCl). Application rates used at all locations and in all years were 93, 186, 279 kg K ha-1along with an untreated control that received no potassium. In all trials, tobacco that was treated with either potassium source yielded numerically higher than the untreated control. In seven out of 10 trials, LC varieties had a higher moisture content than HC varieties. Tobacco treated with KCl had higher chloride levels than tobacco treated with K2­SO4.Quality grade index was similar for tobacco treated with KCl compared to tobacco treated with K2SO4. In all trials, tobacco treated with KCl had numerically lower Tobacco Specific Nitrosamines (TSNA) levels than tobacco treated with K2SO4. Reductions in TSNA levels were 30% lower in tobacco treated with KCl compared to tobacco treated with K2SO­4.
description: Copyright © Andrea Brooke Keeney 2019
description: Funding information: R.J. Reynolds Tobacco Company
Electrical control of phonon mediated spin relaxation rate in semiconductor quantum dots: the Rashba vs the Dresselhaus spin-orbit couplings
Creators: name: Prabhakar, Sanjay
name: Melnik, Roderick
name: Bonilla, Luis L.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: In symmetric quantum dots (QDs), it is well known that the spin-hot spot (i.e., the cusp-like structure due to the presence of degeneracy near the level or anticrossing point) is present for the pure Rashba case but is absent for the pure Dresselhaus case [Phys. Rev. Lett. 95, 076805 (2005)]. Since the Dresselhaus spin-orbit coupling dominates over the Rashba spin-orbit coupling in GaAs and GaSb QDs, it is important to find the exact location of the spin-hot spot or the cusp-like structure even for the pure Dresselhaus case. In this paper, for the first time, we present analytical and numerical results that show that the spin-hot spot can also be seen for the pure Dresselhaus spin-orbit coupling case by inducing large anisotropy through external gates. At or nearby the spin-hot spot, the spin transition rate enhances and the decoherence time reduces by several orders of magnitude compared to the case with no spin-hot spot. Thus one should avoid such locations when designing QD spin based transistors for the possible implementation in quantum logic gates, solid state quantum computing and quantum information processing. It is also possible to extract the exact experimental data (Phys. Rev. Lett. 100, 046803 (2008)) for the phonon mediated spin-flip rates from our developed theoretical model.
description: 9 pages, 7 figures
title: Nachruf Rolf Dehn
Creators: name: Fingerlin, Gerhard
Publisher: name: University Library Heidelberg
Year: 2015

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 44, Nr. 4 (2015), Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
title: “Непроявленные негативы”: Дневник Софьи Островской
Creators: name: Savkina, Irina
Publisher: name: AvtobiografiЯ
Year: 2015

description: “Undeveloped negatives”: Sophia Ostrovskaya’s Diary.
The present article reviews Sophia Ostrovskaya’s (1902-1983) Diary as a compositional unity of separate ‘diaries’ written with different purposes using different strategies of diary writing. The article is focused mainly on diaries written  in  the  period 1933-1947.  I  analyse  the  techniques  of  creating  a  ‘cryptogrammic diary’ in order to overcome the taboos and the ways of constructing a social  and  gender  identity  through  the  writing  process.  The  article also  discusses the complex interaction between the ‘modernist’ and the ‘Soviet’ types of subjectivity within the frame of the description of the ‘self’ operated through
the diary.
title: Nachruf Jürgen Michler ; Abbildungsnachweis
Creators: name: Goer, Michael
Publisher: name: University Library Heidelberg
Year: 2015

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 44, Nr. 4 (2015), Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
title: Die Landesdenkmalpflege
Creators: name: Redaktion, Die
Publisher: name: University Library Heidelberg
Year: 2015

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 44, Nr. 4 (2015), Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
Salix herbacea
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: S. herbacea X serpyllifolia (= S. valsoreyana Guyot) - 3: Valsorey, zwei Stellen: unter Les Luisettes, 2530m, und Grands Plans, 2550m (Guyot 1917 bzw. 1918, testibus R. Buser et F. Heinis). (Vgl. Guyot Lit. 1940;BechererLit. 1941a, S. 327und 337.)
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
title: Маргинальная и инфернальная топология города в мифологии американского фильма ужасов
Creators: name: Маленко, Сергей
Publisher: name: Новгородский государственный университет имени Ярослава Мудрого (НовГУ)
Year: 2019

description: Рассматривается мифология городского пространства, которое в образах американских фильмов ужасов жестко стратифицируется в официальных и маргинальных топосах потребительской цивилизации. Визуализация ужасного конфликта государственных социальных ролей и скрытой повседневной жизни обывателей в маргинальных пространствах, фиксирует комплекс нестандартных ситуаций, которые требуют от героев неординарных экзистенциальных, эмоциональных и интеллектуальных усилий. Искусственность городского ландшафта только усиливает напряжение населяющих его сообществ. В традициях «массовой культуры» маргинальные топосы вытесняются из хронологии городской жизни и потому становятся генераторами зла и ужаса. Они выступают символами ущербности и неполноценности индивида и цивилизации, а также извечными территориями внутренней борьбы человека со своими страхами, которые персонифицируются в образах мифологических инфернальных существ. Кроме того, подобные хронотопы непрерывно генерируют ужасные образы извечных «теневых» оппонентов цивилизации, представленные, с одной стороны, бактериями, вирусами, синантропными насекомыми и грызунами, а с другой, витализированными отходами жизнедеятельности, мусором, канализацией, пустырями и свалками. Голливудская визуализация хронотопов ужасного противостояния города и бунтующей природы становится формой бессознательной компенсации битвы человека за свои права и технологией идеологической сублимации социальных протестов и революций в соматических моделях межвидовой борьбы за выживание.
Modeling and experimental validation of the influence of robot temperature on its energy consumption
Creators: name: Eggers, Kai
name: Knöchelmann, Elias
name: Tappe, Svenja
name: Ortmaier, Tobias
Publisher: name: Piscataway, NJ : Institute of Electrical and Electronics Engineers Inc.
Year: 2018
Subjects: subject: Industrial Robotics
subject: Energy Efficiency
subject: Robot Temperature
subject: Friction Modeling
subject: Dewey Decimal Classification::600 | Technik
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: This paper presents an approach to significantly improve modeling accuracy for the power and energy demands of industrial robots. This is achieved by taking the temperature dependency of the joint's viscuous friction parameters into account. While the connection is commonly known, it is usually neglected in state-of-the-art energy consumption models for industrial robots. This paper shows that a consideration of temperature-dependent friction provides significant improvement of energy modeling accuracy. The approach is validated on a test rig with a KUKA KR 16 robotic manipulator. Measurements show that the grid energy consumption modeling error can be reduced from up to 45% to approx. 5% over the whole spectrum of operating temperatures.
Guidelines to the Problem of Location Management and Database Architecture for the Next Generation Mobile Networks
Creators: name: Sarker, Md. Mamun Ali
name: Khan, Md. Ashraf Hossain
name: Hashem, M. M. A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: Databases (cs.DB)
subject: FOS: Computer and information sciences

description: In near future, anticipated large number of mobile users may introduce very large centralized databases and increase end-to-end delays in location registration and call delivery on HLR-VLR database and will become infeasible. After observing several problems we propose some guidelines. Multitree distributed database, high throughput index structure, memory oriented database organization are used. Location management guidelines for moving user in overlapping network, neighbor discovery protocol (NDP), and global roaming rule are adopted. Analytic model and examples are presented to evaluate the efficiency of proposed guidelines.
title: Aus der Balance geraten. Wie Genschalter über jung und alt entscheiden
Creators: name: Herzig, Stephan
Publisher: name: University Library Heidelberg
Year: 2012

description: Viele Faktoren können den Stoffwechsel des Körpers im Laufe des Lebens aus dem Gleichgewicht bringen. Die verlorene Balance lässt das Risiko steigen, an einem „Altersleiden“ zu erkranken, etwa an Diabetes, an Arterienverkalkung oder an Krebs. Wissenschaftler der Abteilung „Molekulare Stoffwechselkontrolle“ – einer gemeinsamen Einrichtung der Universität Heidelberg, der Medizinischen Fakultät und des Deutschen Krebsforschungszentrums – untersuchen das Zusammenspiel der Moleküle, um altersassoziierten Krankheiten besser vorzubeugen und sie zielgerichteter zu behandeln. Möglicherweise können ihre Erkenntnisse sogar dazu beitragen, alternde Stoffwechsel wieder zu verjüngen.
description: Ruperto Carola, Nr. 1 (2012): Alt & Jung, Beginn und Erscheinungsfrequenz: Nummer: 1, Jahr: 2012, Ausgaben pro Band: 2
Galactic winds - How to launch galactic outflows in typical Lyman-break galaxies
Creators: name: von Glasow, Wolfgang
name: Krause, Martin
name: Sommer-Larsen, Jesper
name: Burkert, Andreas
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We perform hydrodynamical simulations of a young galactic disc embedded in a hot gaseous halo using parameters typical for Lyman break galaxies (LBGs). We take into account the (static) gravitational potentials due to a dark matter halo, a stellar bulge and a disc of stars and gas. Star formation is treated by a local Kennicutt-Schmidt law. We simplify the structure of the interstellar medium by restricting the computational domain to a 25th of the full azimuthal angle, effectively assuming large-scale axisymmetry and neglecting any effects of spiral structure, and focus on the large-scale ISM drivers, the superbubbles. Supernovae are triggered randomly and have preset event sizes of several tens to hundreds. We further investigate different halo gas pressures and energy injection methods. Many of our simulated galaxies, but not all, develop bipolar outflows. We characterise the strength of the outflow by mass and energy outflow rates, and investigate the effect of changes to the details of the model. We find that supernovae are more effective if comprised into larger superbubbles. The weight and the pressure of the halo gas is able to quench galactic outflows. The wind emerges from a series of superbubbles in regions where a critical star formation density is exceeded. The superbubbles expand into the gaseous halo at slightly supersonic speed, producing radiative shock waves with similar characteristics as the absorptions systems observed around LBGs.
description: 20 pages, 21 figures, accepted by MNRAS
Interfaces
Creators: name: Wick, Thomas
Publisher: name: Hannover : Institutionelles Repositorium der Leibniz Universität Hannover
Year: 2021
Subjects: subject: Interfaces
subject: Coupled Problems
subject: Cloud Computing
subject: Open-source code
subject: Fluid-structure interaction
subject: Gekoppelte Probleme
subject: Fluid-Struktur-Interaktion
subject: Dewey Decimal Classification::500 | Naturwissenschaften::510 | Mathematik

description: In this course, coupled problems with interfaces are considered. Some applications and examples are discussed first. Then, interfaces are defined and classified into three categories. Numerical modeling of interfaces is a central aspect in this presentation. These theoretically-oriented parts are followed by numerical simulations using an open-source fluid-structure interaction benchmark code based on the finite element library deal.II. For joint coding, a docker image was installed on qarnot and repl.it for cloud computing.
description: Course held at the CSMA Junior section workshop ahead of the 14th WCCM & EDDOMAS Congress 2020
title: Die ewige Seele. Was nach dem Tod von uns bleibt
Creators: name: Halfwassen, Jens
Publisher: name: University Library Heidelberg
Year: 2013

description: Die überlieferten Vorstellungen von Himmel und Hölle entwerfen Bilder eines Lebens nach dem Tod. Sie malen in mythischer Form aus, was uns im Guten wie im Bösen erwartet. Vorausgesetzt wird dabei, dass es ein Leben nach dem Tod überhaupt gibt. Dies ist keineswegs selbstverständlich – und doch ist der Glaube hieran uralt und in allen Kulturen der Menschheit anzutreffen. In Europa ist er geprägt durch die klassische griechische Philosophie und ihre Lehre von der Unsterblichkeit der immateriellen, geistigen Seele. Schöpfer dieser Lehre ist Platon, der größte und wirkungsmächtigste Klassiker unserer philosophischen Tradition.
description: Ruperto Carola, Nr. 2 (2013): Himmel & Hölle, Beginn und Erscheinungsfrequenz: Nummer: 1, Jahr: 2012, Ausgaben pro Band: 2
On the adjoint equation in fluid-structure interaction
Creators: name: Wick, Thomas
Publisher: name: Hannover : Institutionelles Repositorium der Leibniz Universität Hannover
Year: 2021
Subjects: subject: Adjoint
subject: Goal-oriented error control
subject: Numerical optimization
subject: incompressible Navier-Stokes equations
subject: Fluid-structure interaction
subject: Space-time modeling
subject: Adjungierte
subject: Ziel-orientierte Fehlerschaetzung
subject: Numerische Optimierung
subject: Inkompressible Navier-Stokes-Gleichungen
subject: Fluid-Struktur-Interaktion
subject: Orts-Zeit-Modellierung
subject: Dewey Decimal Classification::500 | Naturwissenschaften::510 | Mathematik

description: In this contribution, we revisit adjoint formulations for stationary and nonstationary space-time fluid-structure interaction. The adjoints serve for two purposes: goal-oriented a posteriori error estimation with the dual-weighted residual method and gradient-based numerical optimization. Our developments are substantiated with comments on numerical simulations in some other published studies.
title: «Не лечите меня жить…»: идеология инструментальной медицины в американских фильмах ужасов
Creators: name: Некита, Андрей
Publisher: name: Новгородский государственный университет имени Ярослава Мудрого (НовГУ)
Year: 2019

description: Анализируются модели визуализации технологических приемов инструментальной медицины на примере традиции американских фильмов ужасов. Для них характерна редукция потенциала культурной коммуникации в соматические дискурсы и ужасные образы изувеченных человеческих тел. Болезнь и сопутствующее ей страдание все чаще вытесняются в связи с распространением в науке и медицинской практике механистической модели «человек-машина». Механизация тела постепенно становятся ведущим способом идеологической сублимации сущности человека. Господство лабораторных, количественных и визуальных методов диагностики выступает причиной формирования особого типа визуальной культуры, безразличной к телесным и душевным страданиям человека. Поэтому экранная смерть как отражение реальных социальных процессов становится ординарным сюжетом фильмов ужасов, что обуславливает их количественный рост, вызванный необходимостью удержания внимания массового потребителя, идеологического контроля и программирования его мировоззрения и повседневности. Повсеместное распространение обезболивающей фармакологии нивелирует извечный конфликт пациента и врача, а также формирует у обывателя устойчивую тенденцию визуальной компенсации вытесненной боли и страданий экранной анальгией. Подобная ситуация формирует устойчивый социальный заказ на их визуализацию, а сама боль и ее кинематографические образы превращаются в прибыльную технологию идеологической манипуляции власти с индивидуальной и коллективной памятью.
title: „Dass es nicht aufhört - das ist die Hölle“. Die Omnipräsenz traumatischer Erfahrung
Creators: name: Seidler, Günter H.
Publisher: name: University Library Heidelberg
Year: 2013

description: „Opfer und Angehörige werden psychologisch betreut.“ In keiner Nachricht über Gewaltopfer darf dieser Satz fehlen. Meist beginnt die Betreuung unmittelbar nach dem traumatischen Ereignis, etwa einer Naturkatastrophe: Kriseninterventionsteams kümmern sich in den ersten Stunden um die Geschädigten und übergeben danach an einen Traumatherapeuten. In anderen Fällen, vor allem nach sexuellem Missbrauch, kommt es jedoch erst spät oder gar nicht zur Therapie: Das Trauma setzt sich fest und wird den Betroffenen zur unentrinnbaren persönlichen Hölle.
description: Ruperto Carola, Nr. 2 (2013): Himmel & Hölle, Beginn und Erscheinungsfrequenz: Nummer: 1, Jahr: 2012, Ausgaben pro Band: 2
title: Социокультурные измерения «мягкой силы» в контексте современных политических практик
Creators: name: Смирнов, Василий
Publisher: name: Новгородский государственный университет имени Ярослава Мудрого (НовГУ)
Year: 2019

description: Рассматривается проблематика «мягкой силы», являющейся инструментом властвования по достижению определенных стратегических целей в политике без обращения к внешнему материализованнвременная политика, как известно, представляет собой арену конкурирующих между собой символических дискурсов, стремящихся навязать различным аудиториям собственные знаковые «фильтры» через использования непрямых, «мягких» технологий. Есть весомые аргументы предполагать, что ключевым показателем эффективности применения стратегии «мягкой силы» является популярность языка страны, использующей инструменты такого влияния, во «внешних пространствах», то есть, за рубежом. Тот факт, что влияние русского языка в мире неуклонно снижается, и что к 2030 году он может вообще «выпасть» из первой десятки мировых языков, свидетельствует об утрате влияния России в мире, а, значит, и о снижении потенциала её «мягкой силы».
title: Teufel oder doch Gott? Die vielen Gesichter des Mao Zedong
Creators: name: Mittler, Barbara
Publisher: name: University Library Heidelberg
Year: 2013

description: Jede Erinnerung erfüllt für eine bestimmte Gegenwart eine bestimmte Funktion. Es gibt aber Erinnerungen, die länger währen als andere: Die an den „Retter Mao“ ist eine solche. Mithin wurde auch der 90. Geburtstag der Kommunistischen Partei Chinas 2011 ganz im Zeichen Mao Zedongs gefeiert. Wie in dem Revolutionslied „Der Osten ist rot“ aus den 1940er-Jahren wird er auch heute noch als die Sonne des Ostens und als Retter des chinesischen Volkes dargestellt. Die Mitprägung neuer Erinnerungsformen durch frühere „Tiefenerinnerungen“ ist etwas, das für die Bedeutung Maos im heutigen China eine ganz entscheidende Rolle spielt. Es erklärt, warum in China immer noch an den geradezu gottgleichen Mao geglaubt wird, während er anderswo vielfach verteufelt wird.
description: Ruperto Carola, Nr. 2 (2013): Himmel & Hölle, Beginn und Erscheinungsfrequenz: Nummer: 1, Jahr: 2012, Ausgaben pro Band: 2
Information Retrieval Service Aspects of the Open Research Knowledge Graph
Creators: name: Arab Oghli, Omar
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität
Year: 2022
Subjects: subject: Digital Libraries
subject: Knowledge Graph
subject: ORKG
subject: Structured Data
subject: Information Retrieval
subject: Dewey Decimal Classification::000 | Allgemeines, Wissenschaft::000 | Informatik, Wissen, Systeme::000 | Informatik, Informationswissenschaft, allgemeine Werke

description: Information Retrieval (IR) takes a fresh perspective in the context of the next-generation digital libraries such as the Open Research Knowledge Graph (ORKG). As scholarly digital libraries evolve from document-based to knowledge-graph-based representations of content, there is a need for their information technology services to suitably adapt as well. The ORKG enables a structured representation of scholarly contributions data as RDF triples - in turn, it fosters FAIR (Findable, Accessible, Interoperable, and Reusable) scholarly contributions. This thesis has practically examined three different IR service aspects in the ORKG with the aim to help users: (i) easily find and compare relevant scholarly contributions; and (ii) structure new contributions in a manner consistent to the existing ORKG knowledge base of structured contributions. In the first part, it will evaluate and enhance the performance of the default ORKG “Contributions Similarity Service.” An optimal representation of contributions as documents obtains better retrieval performance of the BM25 algorithm in Elasticsearch. To achieve this, evaluation datasets were created and the contributions search index reinitialized with the new documents. In its second part, this thesis will introduce a “Templates Recommendation Service.” Two approaches were tested. A supervised approach with a Natural Language Inference (NLI) objective that tries to infer a contribution template for a given paper if one exists or none. And an unsupervised approach based on search that tries to return the most relevant template for a queried paper. Our experiments favoring ease of practical installation resulted in the conclusion that the unsupervised approach was better suited to the task. In a third and final part, a “Grouped Predicates Recommendation Service” will be introduced. Inspired from prior work, the service implements K-Means clustering with an IR spin. Similar structured papers are grouped, their in-cluster predicate groups computed, and new papers are semantified based on the predicate groups of the most similar cluster. The resulting micro-averaged F-measure of 65.5% using TF-IDF vectors has shown a sufficient homogeneity in the clusters.
Symbiotic Stars with Similar Line Profiles during Activity
Creators: name: Tomov, N. A.
name: Tomova, M. T.
name: Bisikalo, D. V.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Line profiles containing indication of bipolar collimated outflow along with P Cyg absorption during phase of activity of several symbiotic systems are considered. The Hgamma profile of Z And during its 2006 outburst consisted of four groups of components. The profile of the HeI λ 5876 line of the Hen 3-1341 system during its 1998-2004 outburst had high-velocity satellite components on one hand and a broad P Cyg absorption on other hand. The Halpha and Hbeta profiles of the BF Cyg system during its 2006-2012 outburst had satellite components, observed for the first time, along with P Cyg absorptions. These profiles are interpreted in the light of a model related to the strong recurrent outbursts of Z And. The AG Dra system during its 2006 outburst did not contain indication of collimated outflow. Its profiles are interpreted in the light of the model related to the first outburst of 2000-2012 active phase of Z And.
description: 16 pages, 17 figures; to be published in AIP Conf. Proc., School and Workshop on SPACE PLASMA PHYSICS, August 19-26, 2012, Albena, Bulgaria
Ferrimagnetism and spin canting of ZnFe2O4 nanoparticles embedded in ZnO matrix
Creators: name: Goya, G. F.
name: Leite, E. R.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: The structural and magnetic properties of ZnFe2O4 nanoparticles embedded in a non-magnetic ZnO matrix are presented. X-ray diffractograms and Transmission Electron Microscopy (TEM) images showed that the resulting samples are composed of crystalline ferrite nanoparticles with average crystallite size = 23.4(0.9) nm, uniformly dispersed within the ZnO matrix. Magnetization data indicated a superparamagnetic-like behavior from room temperature down to T_{M} ~ 20 K, where a transition to a frozen state is observed. The M(H) curves displayed nearly zero coercive field down to TM, where a sharp increase in the H_C value is observed. The measured saturation magnetization M_S values at 200 and 2 K were M_S = 0.028(3) and 0.134(7) muB/f.u. ZnFe2O4 respectively, showing the existence of small amounts of non compensated atomic moments. Mössbauer measurements at low temperatures confirmed the transition to a magnetically ordered state for T < 25 K, where two magnetically split sextets develop. Whereas these two sextets show strong overlap due to the similar hyperfine fields, in-field Mössbauer spectra clearly showed two different Fe3+ sites, demonstrating that the sample is ferrimagnetically ordered. The two spinel sites are found to behave differently under an external field of 12 T: whereas the moments located at A sites show a perfect alignment with the external field, spins at B sites are canted by an angle alpha_B = 49(2)°. We discuss the significance of this particle structure for the observed magnetic behavior.
description: 14 pages, 10 figures, 1 Table
title: Licht und Finsternis. Die Wege des Sonnengottes
Creators: name: Quack, Joachim Friedrich
Publisher: name: University Library Heidelberg
Year: 2013

description: Unter Himmel und Hölle stellen wir uns zumeist zwei abgeschlossene Parallelgesellschaften vor, die kaum miteinander interagieren: auf der einen Seite der Himmel, der als Symbol für die Erlösung und das Paradies gilt, auf der anderen Seite die Hölle, in der unsägliche Qualen und das Böse schlechthin verortet sind. Bei den Alten Ägyptern hingegen sieht das Bild sehr viel komplexer aus. Der Sonnengott – die machtvollste Gestalt der altägyptischen Religion – und sein Gefolge ziehen sowohl durch Himmel als auch Unterwelt. An beide Orte bringen sie Licht und gerechtes Urteil, an beiden Orten lauern aber auch Feinde, gegen die es sich zu verteidigen gilt.
description: Ruperto Carola, Nr. 2 (2013): Himmel & Hölle, Beginn und Erscheinungsfrequenz: Nummer: 1, Jahr: 2012, Ausgaben pro Band: 2
Synthese und Modifikation von Lithiumeisenphosphat (LiFePO4)
Creators: name: Jüstel, Manuela
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2013
Subjects: subject: Lithium iron phosphate
subject: nozzle spray pyrolysis
subject: particle synthesis
subject: lithium-ion-batteries
subject: Lithiumeisenphosphate (LiFePO4)
subject: Düsensprühpyrolyse
subject: Partikelsynthese
subject: Lithium-Ionen-Batterien
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: [no abstract]
Bulk Viscosity Effects in Event-by-Event Relativistic Hydrodynamics
Creators: name: Noronha-Hostler, Jacquelyn
name: Denicol, Gabriel S.
name: Noronha, Jorge
name: Andrade, Rone P. G.
name: Grassi, Frederique
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: Bulk viscosity effects on the collective flow harmonics in heavy ion collisions are investigated, on an event by event basis, using a newly developed 2+1 Lagrangian hydrodynamic code named v-USPhydro which implements the Smoothed Particle Hydrodynamics (SPH) algorithm for viscous hydrodynamics. A new formula for the bulk viscous corrections present in the distribution function at freeze-out is derived starting from the Boltzmann equation for multi-hadron species. Bulk viscosity is shown to enhance the collective flow Fourier coefficients from $v_2(p_T)$ to $v_5(p_T)$ when $% p_{T}\sim 1-3$ GeV even when the bulk viscosity to entropy density ratio, $% ζ/s$, is significantly smaller than $1/(4π)$.
description: 23 pages, 12 figures, corrected typos, one reference included