cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Conformal Fibrations of $S^3$ by Circles
Creators: name: Heller, Sebastian
Publisher: name: arXiv
Year: 2013
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 35Q55, 53C42, 53A30

description: It is shown that analytic conformal submersions of $S^3$ are given by intersections of (not necessary closed) complex surfaces with a quadratic real hyper-surface in $\mathbb{C}P^3.$ A new description of the space of circles in the 3-sphere in terms of a natural bilinear form on the tangent sphere bundle of $S^3$ is given. As an application it is shown that every conformal fibration of $S^3$ by circles is the Hopf fibration up to conformal transformations.
Timing, Synchronization & Longitudinal Aspects
Creators: name: Damerau, Heiko
Publisher: name: CERN
Year: 2018
Subjects: Longitudinal beam dynamics; beam synchronous timing; bunch-to-bucket transfer; beam synchronization; energy matching; longitudinal matching

description: The transfer of beams from one accelerators to another requires a set of parameters correctly adjusted, as well as a sequence of events to trigger all elements relevant to the transfer exactly at the right moment with respect to the beam. The course introduces the basic building blocks of synchronization systems and beam synchronous timing generation. The parameters for the transfer are then derived starting from longitudinal beam dynamics. Furthermore, The steps for the transfer of lepton and hadron beams between circular accelerators are summarized.
description: CERN Yellow Reports: School Proceedings, Vol 5 (2018): Proceedings of the CAS-CERN Accelerator School on Beam Injection, Extraction and Transfer
A method to calibrate the absolute energy scale of air showers with ultra-high energy photons
Creators: name: Homola, Piotr
name: Risse, Markus
Publisher: name: arXiv
Year: 2014
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Calibrating the absolute energy scale of air showers initiated by ultra-high energy cosmic rays is an important experimental issue. Currently, the corresponding systematic uncertainty amounts to 14-21% using the fluorescence technique. Here we describe a new, independent method which can be applied if ultra-high energy photons are observed. While such photon-initiated showers have not yet been identified, the capabilities of present and future cosmic-ray detectors may allow their discovery. The method makes use of the geomagnetic conversion of UHE photons (preshower effect), which significantly affects the subsequent longitudinal shower development. The conversion probability depends on photon energy and can be calculated accurately by QED. The comparison of the observed fraction of converted photon events to the expected one allows the determination of the absolute energy scale of the observed photon air showers and, thus, an energy calibration of the air shower experiment. We provide details of the method and estimate the accuracy that can be reached as a function of the number of observed photon showers. Already a very small number of UHE photons may help to test and fix the absolute energy scale.
description: accepted for publication in Phys. Rev. Lett
Magnets and Special Magnets
Creators: name: Muehle, Carsten
Publisher: name: CERN
Year: 2018
Subjects: Accelerator magnets, dipoles, quadrupoles, sextupoles, steering magnets

description: Magnets are key components of all charged particle accelerators, their beam lines and their experiments. They are used to guide, focus and correct charged particle beams. Depending on the varying requirements of different accelerators, the simple underlying physics leads to a wide variety of types and designs.
description: CERN Yellow Reports: School Proceedings, Vol 5 (2018): Proceedings of the CAS-CERN Accelerator School on Beam Injection, Extraction and Transfer
48CK302-624, Utilized Flake, Side 2
Creators: name: (:Unkn) Unknown
Publisher: name: University of Wyoming
Year: 2023
Subjects: Stone Tool
Flake Tool
Quartzite
Vore Buffalo Jump
Bison
Bison Jump
Mass Kill Site
Archaeological Site
Northwest Plains Tribes
Sinkhole
Wyoming
Prehistoric
Archaeology

description: Image of a tan quartzite utilized flake. Provenience: unknown
Kicker systems
Creators: name: Barnes, Michael
Publisher: name: CERN
Year: 2018
Subjects: Injection; Extraction; Kicker; Pulse Power; Pulse forming; Beam coupling impedance; Thyratrons; Inductive Adder; Marx Generator; Striplines;

description: Each stage of an accelerator system has a limited dynamic range and therefore a chain of stages is required to reach high energy. A combination of septa and kicker magnets is frequently used to inject and extract beam from each stage. The kicker magnets typically produce rectangular field pulses with fast rise- and/or fall-times, however, the field strength is relatively low. To compensate for their relatively low field strength, the kicker magnets are generally combined with electromagnetic septa. The septa provide relatively strong field strength but are either DC or slow pulsed. This paper discusses injection and extraction systems with particular emphasis on the hardware required for the kicker system. Design options and computer aided design tools are also discussed. In addition the interaction of the beam with the kicker system, primarily the kicker magnet, is considered.
description: CERN Yellow Reports: School Proceedings, Vol 5 (2018): Proceedings of the CAS-CERN Accelerator School on Beam Injection, Extraction and Transfer
48CK302-366, Midsection Fragment, Side 1
Creators: name: (:Unkn) Unknown
Publisher: name: University of Wyoming
Year: 2023
Subjects: Projectile Point
Quartzite
Vore Buffalo Jump
Bison
Bison Jump
Mass Kill Site
Archaeological Site
Northwest Plains Tribes
Sinkhole
Wyoming
Prehistoric
Archaeology

description: Image of a purple quartzite projectile point midsection fragment. re-consolidated with 48CK302-367. Provenience: E1-11-5
Spectral Efficiency of Dynamic Coordinated Beamforming: A Stochastic Geometry Approach
Creators: name: Lee, Namyoon
name: Morales-Jimenez, David
name: Lozano, Angel
name: Heath, Robert W.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: This paper characterizes the performance of coordinated beamforming with dynamic clustering. A downlink model based on stochastic geometry is put forth to analyze the performance of such base station (BS) coordination strategy. Analytical expressions for the complementary cumulative distribution function (CCDF) of the instantaneous signal-to-interference ratio (SIR) are derived in terms of relevant system parameters, chiefly the number of BSs forming the coordination clusters, the number of antennas per BS, and the pathloss exponent. Utilizing this CCDF, with pilot overheads further incorporated into the analysis, we formulate the optimization of the BS coordination clusters for a given fading coherence. Our results indicate that (i) coordinated beamforming is most beneficial to users that are in the outer part of their cells yet in the inner part of their coordination cluster, and that (ii) the optimal cluster cardinality for the typical user is small and it scales with the fading coherence. Simulation results verify the exactness of the SIR distributions derived for stochastic geometries, which are further compared with the corresponding distributions for deterministic grid networks.
description: Revised version submitted to IEEE TWC
Longitudinal Beam Dynamics - Recap
Creators: name: Tecker, Frank
Publisher: name: CERN
Year: 2018
Subjects: Accelerators; School; synchrotron motion; longitudinal phase space; Hamiltonian

description: The course gives a very brief summary of longitudinal beam dynamics for both linear and circular accelerators. After discussing the synchronism conditions in linacs, it focuses on the particle motion in synchrotrons. It summarizes the equation of motions, discusses the phase space matching during a beam transfer, and introduces the Hamiltonian of the longitudinal motion.
description: CERN Yellow Reports: School Proceedings, Vol 5 (2018): Proceedings of the CAS-CERN Accelerator School on Beam Injection, Extraction and Transfer
Feature Extraction of Human Lip Prints
Creators: name: Bandyopadhyay, Samir Kumar
name: Arunkumar, S
name: Bhattacharjee, Saptarshi
Publisher: name: arXiv
Year: 2013
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Methods have been used for identification of human by recognizing lip prints. Human lips have a number of elevation and depressions features called lip prints and examination of lip prints is referred to as cheiloscopy. Lip prints of each human being are unique in nature like many others features of human. In this paper lip print is first smoothened using a Gaussian Filter. Next Sobel Edge Detector and Canny Edge Detector are used to detect the vertical and horizontal groove pattern in the lip. This method of identification will be useful both in criminal forensics and personal identification. It is our assumption that study of lip prints and their types are well connected to play a song in a better way that are well accepted to people who loves to hear songs.
description: 8 pages, 18 figures
Three classes of 1-planar graphs
Creators: name: Czap, Július
name: Šugerek, Peter
Publisher: name: arXiv
Year: 2014
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: A graph is called 1-planar if it can be drawn in the plane so that each of its edges is crossed by at most one other edge. In this paper we decompose the set of all 1-planar graphs into three classes $\mathcal C_0, \mathcal C_1$ and $\mathcal C_2$ with respect to the types of crossings and present the decomposition of 1-planar join products. Zhang \cite{z} proved that every $n$-vertex 1-planar graph of class $\mathcal C_1$ has at most $\frac{18}{5}n-\frac{36}{5}$ edges and a $\mathcal C_1$-drawing with at most $\frac 35 n-\frac 65$ crossings. We improve these results. We show that every $\mathcal C_1$-drawing of a 1-planar graph has at most $\frac 35 n-\frac 65$ crossings. Consequently, every $n$-vertex 1-planar graph of class $\mathcal C_1$ has at most $\frac{18}{5}n-\frac{36}{5}$ edges. Moreover, we prove that this bound is sharp.
48CK302-18580, Tri-Notched Point, Side 2
Creators: name: (:Unkn) Unknown
Publisher: name: University of Wyoming
Year: 2023
Subjects: Projectile Point
Tri-Notched
Quartzite
Vore Buffalo Jump
Bison
Bison Jump
Mass Kill Site
Archaeological Site
Northwest Plains Tribes
Sinkhole
Wyoming
Prehistoric
Archaeology

description: Image of a purple quartzite tri-notched projectile point, one tang partially broken. Provenience: unknown
Emittance Preservation
Creators: name: Kain, Verena
Publisher: name: CERN
Year: 2018
Subjects: Emittance, brightness, accelerator performance, emittance blow-up

description: The transverse emittance is a critical parameter for the performance of synchrotron light sources, linear and circular colliders and many other applications. The best performance is often achieved with the smallest emittances. Many effects lead however to emittance growth. In this lecture emittance growth from mismatch at injection into circular machines will be discussed. The concept of emittance and how to calculate it will be introduced and the formulae for emittance blow-up for the most common injection errors will be derived.
description: CERN Yellow Reports: School Proceedings, Vol 5 (2018): Proceedings of the CAS-CERN Accelerator School on Beam Injection, Extraction and Transfer
Linking historical dictionary data with its sources
Creators: name: Müller, Caroline
Publisher: name: Universidad Nacional de Educación a Distancia Madrid
Year: 2022
Subjects: subject: 004 Data processing Computer sciences
subject: 400 Language, Linguistics
subject: 460 Spanish & Portugese languages

description: This master’s thesis describes the development of a tool for the semi-automatic markup of lexical attestations in TEI encoded texts. The attestations belong to the database Diccionario del Español Medieval electrónico (DEMel) and consist of word forms that were excerpted from medieval Spanish texts. The aim is to link the attestations from the database with their source texts by annotation. As some of the information, required for the tagging, is derived from digitized handwritten paper slips, none of the existing tools is suitable.
Septa
Creators: name: Paraliev, Martin
Publisher: name: CERN
Year: 2018
Subjects: Accelerators; Electrostatic septum; septum magnet; injection; extraction; School.

description: In Septa I and Septa II lectures we introduce the basic concept of particle accelerators septa devices – key elements of beam injection and extraction systems. The basics of charged particle beams electrostatic and magnetic deflection are presented. A comparison between the two schemes is introduced. Different septa types and their specifics are described and most of them are illustrated with real septa designs from accelerator laboratories around the world. Design examples are used to emphasize the important septa parameters and their limitations. At the end, presented equations for electrostatic and magnetic deflection are mathematically derived.
description: CERN Yellow Reports: School Proceedings, Vol 5 (2018): Proceedings of the CAS-CERN Accelerator School on Beam Injection, Extraction and Transfer
48CK302-555, Point Distal End, Side 2
Creators: name: (:Unkn) Unknown
Publisher: name: University of Wyoming
Year: 2023
Subjects: Projectile Point
Tip
Quartzite
Vore Buffalo Jump
Bison
Bison Jump
Mass Kill Site
Archaeological Site
Northwest Plains Tribes
Sinkhole
Wyoming
Prehistoric
Archaeology

description: Image of a tan quartzite projectile point, midsection and distal end. Provenience: W4-?-30"
Assoziationsverhalten Ionischer Flüssigkeiten und dessen Einfluss auf die Modellierung komplexer Phasengleichgewichte
Creators: name: Hausmann, Peter
Publisher: name: Universität Rostock
Year: 2022
Subjects: subject: 600 Technology (Applied sciences)
subject: 620 Engineering & allied operations
subject: 660 Chemical engineering

description: Die vorliegende Dissertation beschäftigt sich mit dem Assoziationsverhalten Ionischer Flüssigkeiten (ILs) und dessen Einfluss auf die Vorhersage von Phasengleichgewichten binärer, IL-haltiger Systeme. Ziel dieser Arbeit ist, ein tieferes Verständnis über die Natur von ILs und deren Verhalten in Lösung zu erlangen, um damit die Modellierung komplexer Phasengleichgewichte mit ILs zu ermöglichen. Durch die aufgezeigten Ergebnisse wurden die Existenz assoziierter IL-Strukturen bestärkt sowie die Sinnhaftigkeit, diese für die Vorhersage von Phasengleichgewichten mit einzubeziehen, dargestellt.
Particle interactions with matter
Creators: name: Lechner, Anton
Publisher: name: CERN
Year: 2018
Subjects: Particle-matter interactions; particle showers; energy deposition.

description: With the steady advances in accelerator technology and new records in beam energy, intensity, brightness, power and luminosity, it is essential to limit adverse effects of beam losses for accelerator operation, equipment and personnel. Particle losses can quench superconducting magnets, induce single event effects in electronics, activate equipment, and alter material properties. In the worst case, high-energy particle beams can cause severe damage to equipment if they are lost in an uncontrolled way. Modern accelerators typically rely on a system of protection absorbers, dumps and beam manipulation devices to safely accelerate, store, extract and transfer beams. Knowledge of particle-matter interactions is important to understand and predict the consequences of beam losses and to design beam-intercepting devices, shielding and other equipment. This paper summarizes the principal physical processes of hadrons, photons and leptons in matter and discusses related phenomena such as particle showers.
description: CERN Yellow Reports: School Proceedings, Vol 5 (2018): Proceedings of the CAS-CERN Accelerator School on Beam Injection, Extraction and Transfer
Transfer Lines
Creators: name: Bartmann, Wolfgang
Publisher: name: CERN
Year: 2018
Subjects: CAS;transfer lines;optics matching;error and correction studies

description: Transfer lines are used to connect accelerators or deliver beam to fixed target experiments. In the following sections the design steps of a transfer line are introduced, starting from back-of-the-envelope calculations. The second part focuses on matching tools for optics design and related hardware specifications. The third part collects special topics which can appear in beam lines.
description: CERN Yellow Reports: School Proceedings, Vol 5 (2018): Proceedings of the CAS-CERN Accelerator School on Beam Injection, Extraction and Transfer
Experimentelle und numerische Untersuchung der trockenen Heißgasentschwefelung von Großmotorabgas
Creators: name: Pfahler, Christian Harald
Publisher: name: Universität Rostock
Year: 2022
Subjects: subject: 620 Engineering & allied operations

description: Großmotoren werden weltweit als Motorgeneratoren in Kraftwerken eingesetzt. Die dabei verbrannten flüssigen Kraftstoffe, zum Beispiel schwere Heizöle, führen zur Emission von Schwefeldioxid und Partikeln. In der vorliegenden Arbeit wird ein neues Verfahren zur Abscheidung von Schwefeldioxid mittels Trockensorption durch Natriumhydrogencarbonat im Temperaturbereich von 250 °C bis 400 °C erforscht. Zuerst wurden mit einem Technikum Filterelemente und der Entschwefelungsprozess untersucht. Anschließend erfolgte eine 3D-CFD-Simulation des Prüfstandsaufbaus mit 1D-Partikelmodell.
Three Questions about Sunspot Equilibria as an Explanation of Economic Fluctuations
Creators: name: Woodford, Michael
Publisher: name: Columbia University
Year: 1987
Subjects: subject: Economics
subject: Mathematics
subject: FOS: Mathematics

description: It is by now well known that the sort of difference equations that characterize the equilibrium conditions of an infinite horizon competitive economy may have solutions in which the endogenous variables fluctuate in response to "sunspot" variables, that is, to random events that in fact have nothing to do with economic "fundamentals," and so do not directly affect the equilibrium conditions. It is possible to view such "sunspot equilibria" as a representation of an actual phenomenon economic fluctuations not caused by exogenous shocks to fundamentals, but rather by revisions of agents' expectations in response to some event, which revised expectations become self-fulfilling.
Early discussions of such solutions sometimes suggested that a more rigorous derivation of the requirements for equilibrium might yield additional restrictions that would eliminate the sunspot solutions from the set of true equilibria. The demonstration by Karl Shell (1977), David Cass (1981), and Costas Azariadis (1981) that sunspot equilibria can exist in a rigorously formulated intertemporal equilibrium model, namely the overlapping generations model of Samuelson, has shown that this is not always the case. Nevertheless, many economists remain skeptical about the reasonableness of the sunspot hypothesis as a possible explanation of actual economic fluctuations, and for quite general reasons, independent of judgments about the empirical plausibility of any particular models. I discuss here three such general reasons for skepticism.
Prospect Theory as Efficient Perceptual Distortion
Creators: name: Woodford, Michael
Publisher: name: Columbia University
Year: 2012
Subjects: subject: Statistics
subject: FOS: Mathematics
subject: Economics
subject: Sociology
subject: FOS: Sociology

description: The paper proposes a theory of efficient perceptual distortions, in which the statistical relation between subjective perceptions and the objective state minimizes the error of the state estimate, subject to a constraint on information processing capacity. The theory is shown to account for observed limits to the accuracy of visual perception, and then postulated to apply to perception of options in economic choice situations as well. When applied to choice between lotteries, it implies reference-dependent valuations, and predicts both risk-aversion with respect to gains and risk-seeking with respect to losses, as in the prospect theory of Kahneman and Tversky (1979).
Formation of the Galactic Millisecond Pulsar Triple System PSR J0337+1715 - a Neutron Star with Two Orbiting White Dwarfs
Creators: name: Tauris, Thomas
name: Heuvel, Ed van den
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The millisecond pulsar in a triple system (PSR J0337+1715, recently discovered by Ransom et al.) is an unusual neutron star with two orbiting white dwarfs. The existence of such a system in the Galactic field poses new challenges to stellar astrophysics for understanding evolution, interactions and mass-transfer in close multiple stellar systems. In addition, this system provides the first precise confirmation for a very wide-orbit system of the white dwarf mass-orbital period relation. Here we present a self-consistent, semi-analytical solution to the formation of PSR J0337+1715. Our model constrains the peculiar velocity of the system to be less than 160 km/s and brings novel insight to, for example, common envelope evolution in a triple system, for which we find evidence for in-spiral of both outer stars. Finally, we briefly discuss our scenario in relation to alternative models.
description: ApJ Letters, in press (6 pages, 3 figures, 1 table)
48CK302-565, Flake Tool, Side 2
Creators: name: (:Unkn) Unknown
Publisher: name: University of Wyoming
Year: 2023
Subjects: Stone Tool
Flake Tool
Porcellanite
Vore Buffalo Jump
Bison
Bison Jump
Mass Kill Site
Archaeological Site
Northwest Plains Tribes
Sinkhole
Wyoming
Prehistoric
Archaeology

description: Image of a gray porcellanite flake tool, possible graver. Provenience: O-3-22"
Machine Protection and Activation
Creators: name: Nordt, Annika
name: Andersson, Riccard
name: Kövecses, Szandra
name: Bargallo, Enric
Publisher: name: CERN
Year: 2018
Subjects: machine protection; activation; risk management, availability, functional protection; Risk Management for complex systems; System of Systems

description: Machine Protection can be described as a strategy that modern particle accelerator driven research facilities utilize to achieving high and optimized operational availability. In this context it is important to define what the terms “operational availability” and “machine protection strategy” intend to address. Research facilities have become more complex and also more expensive during the past decades, many times aiming at unprecedented beam energies or beam power levels. Availability in the context of particle accelerator driven research facilities is often referring to “availability of beam” that can be used for scientific applications performed by “users”. This paper provides a general overview of how machine protection can be utilised to increase beam availability of accelerator driven research facilities.
description: CERN Yellow Reports: School Proceedings, Vol 5 (2018): Proceedings of the CAS-CERN Accelerator School on Beam Injection, Extraction and Transfer
Magnified image of CK302-18789 with polishing on bone tool from bison metatarsal
Creators: name: (:Unkn) Unknown
Publisher: name: University of Wyoming
Year: 2023
Subjects: Metatarsal
Polishing
Bone Tool
Vore Buffalo Jump
Bison
Bison Jump
Mass Kill Site
Archaeological Site
Northwest Plains Tribes
Sinkhole
Wyoming
Prehistoric
Archaeology

description: Metatarsal anterior aspect at 7.9 magnification.
Quantum dynamics of an atomic double-well system interacting with a trapped ion
Creators: name: Joger, Jannis
name: Negretti, Antonio
name: Gerritsma, Rene
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We theoretically analyze the dynamics of an atomic double-well system with a single ion trapped in its center. We find that the atomic tunnelling rate between the wells depends both on the spin of the ion via the short-range spin-dependent atom-ion scattering length and on its motional state with tunnelling rates reaching hundreds of Hz. A protocol is presented that could transport an atom from one well to the other depending on the motional (Fock) state of the ion within a few ms. This phonon-atom coupling is of interest for creating atom-ion entangled states and may form a building block in constructing a hybrid atom-ion quantum simulator. We also analyze the effect of imperfect ground state cooling of the ion and the role of micromotion when the ion is trapped in a Paul trap. Due to the strong non-linearities in the atom-ion interaction, the micromotion can cause couplings to high energy atom-ion scattering states, preventing accurate state preparation and complicating the double-well dynamics. We conclude that the effects of micromotion can be reduced by choosing ion/atom combinations with a large mass ratio and by choosing large inter-well distances. The proposed double-well system may be realised in an experiment by combining either optical traps or magnetic microtraps for atoms with ion trapping technology.
description: 14 pages, 13 figures
null Schwimmkrabben-Morphotyp
Creators: name: Hazerli, Dennis
Publisher: name: Universität Rostock
Year: 2022
Subjects: subject: 500 Natural sciences
subject: 570 Life science
subject: 590 Zoological sciences

description: Die Schwimmkrabbe als Morphotyp unterscheidet sich von vielen anderen Vertretern der Echten Krabben (Brachyura) durch Eigenschaften, die sie dazu befähigen, auf einzigartige Art und Weise zu schwimmen. In dieser Arbeit wird gezeigt, dass der Morphotyp sich von Nicht-Schwimmkrabben auch bezogen auf die innere Anatomie unterscheidet. Eine Rekonstruktion der Gestalt von Vorfahren kommt zu dem Ergebnis, dass der Morphotyp nur einmal während der Evolution entstanden ist, aber in mehreren Fällen wieder zu sich ausschließlich laufend fortbewegenden Formen umgekehrt wurde.
Optimization of dual-fuel engine utilizing flexible valve train technology
Creators: name: Abaskharon, Mina
Publisher: name: Universität Rostock
Year: 2022
Subjects: subject: 620 Engineering & allied operations

description: This research aims to optimize the performance and emissions of a dual-fuel marine engine by a flexible valve train approach. A mathematical model for the flexible valve train strategy including its two sub-mechanisms (Flexible Camshaft Technology (FCT) and Multi-segment Camshaft) is developed in MATLAB. After that, a phenomenological combustion model based on fractal combustion principle is developed in AVL CRUISE-M. The combustion model includes many sub-models and allows the valve timing positions to be imported to investigate their influence on the engine performance and emissions.
Ortsaufgelöste Handkraftmessungen im ersten Jahr nach distaler Radiusfraktur mit dem Manugraphie-System
Creators: name: Karnatz, Johannes Bernhard
Publisher: name: Universität Rostock
Year: 2022
Subjects: subject: 610 Medical sciences Medicine

description: Eine distale Radiusfraktur schränkt die Handfunktion zunächst deutlich ein. In den meisten Fällen erholt diese sich innerhalb eines Jahres wieder. Ortsaufgelöste Handkraftmessungen ermöglichen Bewertungen der Kraftverteilung. Ziel war es, diese zwischen den 5 Fingerstrahlen, dem Thenar und Hypothenar nach operativ versorgter distaler Radiusfraktur zu bewerten. Zudem wurde die Gesamtkraft ausgewertet, und es wurden die Finger- und Handgelenksbeweglichkeit erfasst. Die gesunde Seite diente als Referenz. Für die Einschätzung der Handfunktion aus Patientensicht wurde der QuickDASH-Score erhoben.
Quantisation Spaces of Cluster Algebras
Creators: name: Gellert, Florian
name: Lampe, Philipp
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Algebra (math.QA)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 13F60

description: The article concerns the existence and uniqueness of quantisations of cluster algebras. We prove that cluster algebras with an initial exchange matrix of full rank admit a quantisation in the sense of Berenstein-Zelevinsky and give an explicit generating set to construct all quantisations.
Exotic Injection and Extraction Methods
Creators: name: Goddard, Brennan
Publisher: name: CERN
Year: 2018
Subjects: CERN; Physics; High-Energy Physics; Accelerators; School; CAS; injection; extraction; kickers; septa; losses; emittance; laser; muons.

description: This lecture  was intended to give a flavor of the creativity which can be applied to injection and extraction, in terms of concepts, systems, challenges and solutions that are somewhat unconventional. A dazzling array of techniques and technologies were already described in great detail in the other lectures; conventional is therefore a very relative or subjective term. In this paper some of the more unusual or creative methods for filling or emptying accelerators are presented and discussed.
description: CERN Yellow Reports: School Proceedings, Vol 5 (2018): Proceedings of the CAS-CERN Accelerator School on Beam Injection, Extraction and Transfer
Parametric signal amplification to create a stiff optical bar
Creators: name: Somiya, K.
name: Kato, J.
name: Yano, K.
name: Saito, N.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Optics (physics.optics)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: An optical cavity consisting of optically trapped mirrors makes a resonant bar that can be stiffer than diamond. A limitation of the stiffness arises in the length of the optical bar as a consequence of the finite light speed. High laser power and light mass mirrors are essential for realization of a long and stiff optical bar that can be useful for example in the gravitational-wave detector aiming at the observation of a signal from neutron-star collisions, supernovae, etc. In this letter, we introduce a parametric signal amplification scheme that realizes the long and stiff optical bar without the need to increase the laser power.
description: 4 pages, 5 figures
DEMel - Ein Webportal zum Erforschen des altspanischen Wortschatzes
Creators: name: Müller, Caroline
Publisher: name: Universität Rostock
Year: 2023
Subjects: subject: 004 Data processing Computer sciences
subject: 400 Language, Linguistics
subject: 460 Spanish & Portugese languages

description: Das Poster präsentiert das Webportal des Diccionario del Español Medieval electrónico (DEMel). Dabei handelt es sich um eine an der Universität Rostock entwickelte Webanwendung zum Erforschen des altspanischen Wortschatzes. Das Poster stellt die verschiedenen Bereiche des DEMel-Portals vor und geht anschließend auf einige Features näher ein. Darüber hinaus zeigt es die Perspektiven für eine mögliche Weiterentwicklung auf.
DEMel - Una aplicación para investigar el léxico del español medieval
Creators: name: Müller, Caroline
Publisher: name: Universidad de Rostock
Year: 2023
Subjects: subject: 004 Data processing Computer sciences
subject: 400 Language, Linguistics
subject: 460 Spanish & Portugese languages

description: El póster presenta la aplicación web del Diccionario del Español Medieval electrónico (DEMel). Es una herramienta para investigar el léxico del español medieval desarrollada en la Universidad de Rostock. El póster enseña tanto las diferentes secciones de la aplicación web como algunas de sus características técnicas. Además, muestra las perspectivas de una posible evolución del DEMel en el futuro.
Non-Hermitian topological photonics in coupled optical fibre loops
Creators: name: Weidemann, Sebastian
Publisher: name: Universität Rostock
Year: 2022
Subjects: subject: 530 Physics

description: In this thesis, the interplay between topology, disorder, and dissipation is investigated both theoretically and experimentally. Embedded into the field of non-Hermitian physics, one-dimensional lattice models are studied, which are governed by a Schrödinger equation with a non-Hermitian Hamiltonian. These models are experimentally implemented by means of classical light propagation in coupled optical fibre loops.
Policy Options in a Liquidity Trap
Creators: name: Eggertsson, Gauti B.
name: Woodford, Michael
Publisher: name: Columbia University
Year: 2004
Subjects: Economics
Public policy (Law)

description: Taken from page 76 -- "The specter of a “liquidity trap,” originally proposed as a theoretical possibility by John Maynard Keynes (1936) but long considered to be of doubtful practical relevance, has recently created alarm among the world’s central banks. In Japan, the overnight rate has been essentially at zero for most of the time since February 1999, making further interest-rate cuts impossible. Yet until well into 2003, growth remained anemic while prices continued to fall, suggesting a need for further monetary stimulus. Since March 2001, the Bank of Japan has supplemented its “zero-interest-rate policy” with a policy of “quantitative easing,” under which additional bank reserves are supplied beyond those needed to keep overnight interest rates at zero. Yet an increase in base money of more than 50 percent failed to halt the deflation, suggesting a liquidity trap. More recently, other central banks, including the Fed, have come close enough to the zero bound to worry about how they would deal with a similar predicament. Here we first discuss whether monetary policy should actually become ineffective when the zero bound on interest rates is reached. We argue that open-market operations, even of “unconventional” types, will be ineffective if they do not change expectations about the future conduct of policy; in this sense, a liquidity trap is possible. Nonetheless, a credible commitment regarding future policy can largely mitigate the distortions created by the zero bound. We fully characterize the optimal commitment in a simple example."
null Verankerung des antifaschistischen Gründungsmythos im Literaturunterricht der DDR
The anchoring of the anti-fascist founding myth in the literature classes of the GDR
Creators: name: Koebe, Kristina
Publisher: name: Universität Rostock, Arbeitsstelle Pädagogische Lesungen
Year: 2023
Subjects: subject: 370 Education
subject: 943 General history of Europe Central Europe Germany

description: Der hiermit vorgelegte Beitrag knüpft an bisherige Forschungen zum antifaschistischen Gründungsmythos als systemkonsolidierendem Narrativ der DDR an. Er richtet den Blick auf den Deutschunterricht, um zu ermitteln, inwiefern der in Lehrplänen und Unterrichtshilfen nahegelegte Beitrag der Unterrichtsarbeit zur Mythenstiftung Eingang in praktisches Handeln von DDR-Lehrkräften fand. Dabei kann anhand der Beschäftigung mit den literarischen Texten „Das siebte Kreuz“, „Nackt unter Wölfen“ und „Die Abenteuer des Werner Holt“ in den 1960er, 1970er und 1980er Jahren gezeigt werden, dass der Literaturunterricht tatsächlich zentrale Mytheme aufgreift, hierbei vor allem die zwingende Verbindung von Kapitalismus und Faschismus, die Einordnung der Arbeiterklasse als grundsätzlich antifaschistisch und größte Gegnerschaft der Faschist*innen und die Präsentation der Kommunist*innen als einzige wahre Führung des deutschen Antifaschismus. Gleichzeitig kann der Beitrag Veränderungen hinsichtlich der mit dem antifaschistischen Gründungsmythos verbundenen Erziehungsziele aufzeigen und damit eine bislang nicht erfolgte Ausdifferenzierung der mythenstiftenden Unterrichtsarbeit vornehmen.
Recapitulation of Electromagnetism
Creators: name: Flisgen, Thomas
name: Heller, Johann
name: Van Rienen, Ursula
Publisher: name: CERN
Year: 2018
Subjects: Maxwell’s equations; vector analysis; Lorentz force; conservation of charges; conservation of energy; electromagnetic properties of matter; continuity constraints of fields; electrostatics; magnetostatics; wave equations; field attenuation in conductors

description: Electromagnetism plays a vital role in many areas of our modern life such as
telecommunication, navigation, electrical drives, electrical grids etc. More-
over, electromagnetism is of special relevance for particle accelerators. Mag-
netic fields are used to bend and to focus bunches of charged particles whereas
electric fields are used to increase the energy of charged particles. This con-
tribution recapitulates selected fundamentals of the theory of electromagnetic
fields and sketches thereby important facts related to vector analysis, electric
fields, magnetic fields and their mutual interaction.
description: CERN Yellow Reports: School Proceedings, Vol 5 (2018): Proceedings of the CAS-CERN Accelerator School on Beam Injection, Extraction and Transfer
Robustly Optimal Monetary Policy with Near-Rational Expectations
Creators: name: Woodford, Michael
Publisher: name: Columbia University
Year: 2010
Subjects: Economics
Commerce

description: The paper considers optimal monetary stabilization policy in a forward-looking model, when the central bank recognizes that private sector expectations need not be precisely model-consistent, and wishes to choose a policy that will be as good as possible in the case of any beliefs that are close enough to model-consistency. It is found that commitment continues to be important for optimal policy, that the optimal long-run inflation target is unaffected by the degree of potential distortion of beliefs, and that optimal policy is even more history-dependent than if rational expectations are assumed.
Design considerations for multi-core optical fibers in nonlinear switching and mode-locking applications
Creators: name: Nazemosadat, Elham
name: Mafi, Arash
Publisher: name: arXiv
Year: 2014
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We explore the practical challenges which should be addressed when designing a multi-core fiber coupler for nonlinear switching or mode-locking applications. The inevitable geometric imperfections formed in these fiber couplers during the fabrication process affect the performance characteristics of the nonlinear switching device. Fabrication uncertainties are tolerable as long as the changes they impose on the propagation constant of the modes are smaller than the linear coupling between the cores. It is possible to reduce the effect of the propagation constant variations by bringing the cores closer to each other, hence, increasing the coupling. However, higher coupling translates into a higher switching power which may not be desirable in some practical situations. Therefore, fabrication errors limit the minimum achievable switching power in nonlinear couplers.
Space Charge Mitigation
Creators: name: Ferrario, M.
Publisher: name: CERN
Year: 2018
Subjects: Beam matching; rms emittance; laminar beam; space charge effects; rms envelope equations.

description: In this paper we introduce, from basic principles, the main concepts of beam focusing and transport of space charge dominated beams in high brightness accelerators using the beam envelope equation as a convenient mathematical tool. Matching conditions suitable for preserving beam quality are derived from the model for significant beam dynamics regimes.
description: CERN Yellow Reports: School Proceedings, Vol 5 (2018): Proceedings of the CAS-CERN Accelerator School on Beam Injection, Extraction and Transfer
Электронное книгоиздание в России: проблема доступа и государственное регулирование
Creators: name: Харитонов, Владимир
Publisher: name: Научный корреспондент
Year: 2016

description: В докладе дан обзор ситуация в российской книжной индустрии и, в частности, в электронном книгоиздании, проанализирована структура рынка, особенности его развития, ключевые игроки и проблемы отрасли. Кроме того, в докладе представлены рекомендации по формированию более открытой модели доступа к электронным книгам. Обзор подготовлен в рамках проекта «Ноосфера. Запуск». При реализации проекта используются средства государственной поддержки, выделенные в качестве гранта в соответствии c распоряжением Президента Российской Федерации от 05.04.2016 №68-рп и на основании конкурса, проведенного Общероссийской общественной организацией «Российский Союз Молодежи».
LB2CO: A Semantic Ontology Framework for B2C eCommerce Transaction on the Internet
Creators: name: Akanbi, Adeyinka K
Publisher: name: arXiv
Year: 2014
Subjects: subject: Computers and Society (cs.CY)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Business ontology can enhance the successful development of complex enterprise system; this is being achieved through knowledge sharing and the ease of communication between every entity in the domain. Through human semantic interaction with the web resources, machines to interpret the data published in a machine interpretable form under web. However, the theoretical practice of business ontology in eCommerce domain is quite a few especially in the section of electronic transaction, and the various techniques used to obtain efficient communication across spheres are error prone and are not always guaranteed to be efficient in obtaining desired result due to poor semantic integration between entities. To overcome the poor semantic integration this research focuses on proposed ontology called LB2CO, which combines the framework of IDEF5 & SNAP as an analysis tool, for automated recommendation of product and services and create effective ontological framework for B2C transaction & communication across different business domains that facilitates the interoperability & integration of B2C transactions over the web.
description: 9 Pages, 7 figures, Research Paper
48CK302-18656, Sandstone Cobble, Side 2
Creators: name: (:Unkn) Unknown
Publisher: name: University of Wyoming
Year: 2023
Subjects: Stone Tool
Chopper
Sandstone
Vore Buffalo Jump
Bison
Bison Jump
Mass Kill Site
Archaeological Site
Northwest Plains Tribes
Sinkhole
Wyoming
Prehistoric
Archaeology

description: Image of a sandstone cobble, possible chopper. Evidence of burning. Provenience: N1-6-2
null prebiotische Wirkung eines Gemisches aus resistenten Stärken auf die renale und faecale 13C- und 15N-Exkretion, die orozökale Transitzeit sowie die CH4- und H2-Bildung beim gesunden Erwachsenen
Creators: name: Scheel, Sarah
Publisher: name: Universität Rostock
Year: 2022
Subjects: subject: 610 Medical sciences Medicine

description: In der vorliegenden Studie untersuchten wir in einem Crossover-Studiendesign die prebiotische Wirkung eines Gemisches aus den resistenten Stärken (RS) Kartoffelfaserstärke, Markerbsenstärke und Maisstärke auf den Stickstoffmetabolismus im Colon des Menschen, die orozökale Transitzeit sowie die Methan- und Wasserstoffexhalation beim gesunden Erwachsenen anhand des Abbaus von Laktose-[13C]ureid und Laktose-[15N}ureid nach Induktion mit unmarkiertem Laktoseureid. Ziel ist, das Verständnis über Stoffwechsel- und Entgiftungsprozesse speziell im Colon und die Rolle der RS hierbei zu erweitern.
Прозрачная система образования
Creators: name: Трищенко, Н. Д.
name: Засурский, И. И.
Publisher: name: Научный корреспондент
Year: 2017

description: Аналитический доклад Ассоциации интернет-издателей, подготовленный по заказу Минобрнауки РФ в рамках исполнения поручения Президента РФ (Пр-16, п.3). В отчёте анализируются результаты реализации проекта "Прозрачная система образования", его обсуждение, объединение с проектом "Путь в профессию" и дальнейшая трансформация в проект "Востребованное образование". Авторы: Н.Д. Трищенко, И.И. Засурский.
Using Topological Insulator Proximity to Generate Perfectly Conducting Channels in Materials without Topological Protection
Creators: name: Essert, Sven
name: Krueckl, Viktor
name: Richter, Klaus
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We show that hybrid structures of topological insulators and materials without topological protection can be employed to create perfectly conducting channels hosted in the non-topological part. These states inherit the topological protection from the proximity of the topological insulator but are more fragile to time-reversal symmetry breaking because of their extended character. We explore their formation in the band structure of model hybrid systems as well as realistic heterostructures involving HgTe/CdTe-based two-dimensional topological insulators. Using numerical quantum transport calculations for the HgTe/CdTe material system we propose two experimental settings which allow for the detection of the induced perfectly conducting channels, both in the localized and diffusive regime, by means of magneto conductance and shot noise.
description: 9 pages, 9 figures
48CK302-563, Tri-Notched Point, Side 1
Creators: name: (:Unkn) Unknown
Publisher: name: University of Wyoming
Year: 2023
Subjects: Projectile Point
Tri-Notched
Porcellanite
Vore Buffalo Jump
Bison
Bison Jump
Mass Kill Site
Archaeological Site
Northwest Plains Tribes
Sinkhole
Wyoming
Prehistoric
Archaeology

description: Image of a gray porcellanite tri-notched projectile point, complete. Provenience: O-2-Level 2-16" Deep, 84" West, 19" North
Preparation and cytological study of collagen/nano-hydroxyapatite/graphene oxide composites
Creators: name: Wang, Jianhua
name: Wang, Yingying
name: Liu, Deshuai
name: Yang, Qiu
name: Huang, Chenguang
name: Yang, Chunrong
name: Zhang, Qiqing
Publisher: name: Institute of Machine Design and Operation, Wrocław University of Technology, Wrocław
Year: 2018
Subjects: nano-hydroxyapatite, graphene oxide, biomimetic mineralization, collagen

description: Acta of Bioengineering and Biomechanics; 04/2018; ISSN 1509-409X
Interference-induced enhancement of field entanglement in a microwave-driven V-type single-atom laser
Creators: name: Yang, Wen-Xing
name: Chen, Ai-Xi
name: Zha, Ting-Ting
name: Bai, Yanfeng
name: Lee, Ray-Kuang
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate the generation and the evolution of two-mode continuous-variable (CV) entanglement from system of a microwave-driven V-type atom in a quantum beat laser. By taking into account the effects of spontaneously generated quantum interference between two atomic decay channels, we show that the CV entanglement with large mean number of photons can be generated in our scheme, and the property of the filed entanglement can be adjusted by properly modulating the frequency detuning of the fields. More interesting, it is found that the entanglement can be significantly enhanced by the spontaneously generated interference.
description: 7 pages, 4 figures
Neonatale Alloimmunthrombozytopenie
Creators: name: Greger, Nico
Publisher: name: Universität Rostock
Year: 2022
Subjects: subject: 610 Medical sciences Medicine

description: Die neonatale Alloimmunthrombozytopenie (NAIT) ist eine seltene Erkrankung des Neugeborenen. In der FNAIT-Studie konnte gezeigt werden, dass im Vergleich zu historischen Daten Anti-HPA-1a weiterhin am häufigsten auftrat, Anti-HPA-5b jedoch signifikant seltener vorkam. Mütter mit nachweisbarem Anti-HPA-1a waren im Vergleich zur Normalbevölkerung signifikant seltener RhD-negativ. In der Anti-HPA-1a-Studie konnte keine Korrelation zwischen Antikörperkonzentration und neonataler Thrombozytopenie gefunden werden, jedoch zwischen Antikörperkonzentration und milden Blutungszeichen des Neugeborenen.