cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Henry Cord Meyer, Drang nach Osten. Fortunes of a Slogan-concept in German Slavic Relations, 1849-1990
Creators: name: Mühle, Eduard
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 1997

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 46 Nr. 3 (1997)
Deep Neural Network Feature Designs for RF Data-Driven Wireless Device Classification
Creators: name: Hamdaoui, Bechir
name: Elmaghbub, Abdurrahman
name: Mejri, Seifeddine
Publisher: name: arXiv
Year: 2021
Subjects: subject: Signal Processing (eess.SP)
subject: Machine Learning (cs.LG)
subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Most prior works on deep learning-based wireless device classification using radio frequency (RF) data apply off-the-shelf deep neural network (DNN) models, which were matured mainly for domains like vision and language. However, wireless RF data possesses unique characteristics that differentiate it from these other domains. For instance, RF data encompasses intermingled time and frequency features that are dictated by the underlying hardware and protocol configurations. In addition, wireless RF communication signals exhibit cyclostationarity due to repeated patterns (PHY pilots, frame prefixes, etc.) that these signals inherently contain. In this paper, we begin by explaining and showing the unsuitability as well as limitations of existing DNN feature design approaches currently proposed to be used for wireless device classification. We then present novel feature design approaches that exploit the distinct structures of the RF communication signals and the spectrum emissions caused by transmitter hardware impairments to custom-make DNN models suitable for classifying wireless devices using RF signal data. Our proposed DNN feature designs substantially improve classification robustness in terms of scalability, accuracy, signature anti-cloning, and insensitivity to environment perturbations. We end the paper by presenting other feature design strategies that have great potentials for providing further performance improvements of the DNN-based wireless device classification, and discuss the open research challenges related to these proposed strategies.
Martin Opitz, Die Psalmen Davids. Nach den Frantzösischen Weisen gesetzt
Creators: name: Jähnig, Bernhart
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2006

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 55 Nr. 1 (2006)
The Lieb-Liniger Model as a Limit of Dilute Bosons in Three Dimensions
Creators: name: Seiringer, Robert
name: Yin, Jun
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mathematical Physics (math-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We show that the Lieb-Liniger model for one-dimensional bosons with repulsive $δ$-function interaction can be rigorously derived via a scaling limit from a dilute three-dimensional Bose gas with arbitrary repulsive interaction potential of finite scattering length. For this purpose, we prove bounds on both the eigenvalues and corresponding eigenfunctions of three-dimensional bosons in strongly elongated traps and relate them to the corresponding quantities in the Lieb-Liniger model. In particular, if both the scattering length $a$ and the radius $r$ of the cylindrical trap go to zero, the Lieb-Liniger model with coupling constant $g \sim a/r^2$ is derived. Our bounds are uniform in $g$ in the whole parameter range $0\leq g\leq \infty$, and apply to the Hamiltonian for three-dimensional bosons in a spectral window of size $\sim r^{-2}$ above the ground state energy.
description: LaTeX2e, 19 pages
Ist maarahvas (‚Landvolk‘), die alte Selbstbezeichnung der Esten, eine Lehnübersetzung? Eine Studie zur Begriffsgeschichte des Ostseeraums
Creators: name: Beyer, Jürgen
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2007

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 56 Nr. 4 (2007)
Dissecting the Quadruple Binary Hyad vA 351 -- Masses for three M Dwarfs and a White Dwarf
Creators: name: Benedict, G. Fritz
name: Franz, Otto G.
name: Horch, Elliott P.
name: Prato, L.
name: Torres, Guillermo
name: McArthur, Barbara E.
name: Wasserman, Lawrence H.
name: Latham, David W.
name: Stefanik, Robert P.
name: Latham, Christian
name: Skiff, Brian A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We extend results first announced by Franz et al. (1998), that identified vA 351 = H346 in the Hyades as a multiple star system containing a white dwarf. With Hubble Space Telescope Fine Guidance Sensor fringe tracking and scanning, and more recent speckle observations, all spanning 20.7 years, we establish a parallax, relative orbit, and mass fraction for two components, with a period, $P=2.70$y and total mass 2.1 Msun. With ground-based radial velocities from the McDonald Observatory Otto Struve 2.1m telescope Sandiford Spectrograph, and Center for Astrophysics Digital Speedometers, spanning 37 years, we find that component B consists of BC, two M dwarf stars orbiting with a very short period (P_ BC=0.749 days), having a mass ratio M_C/M_B=0.95. We confirm that the total mass of the system can only be reconciled with the distance and component photometry by including a fainter, higher mass component. The quadruple system consists of three M dwarfs (A,B,C) and one white dwarf (D). We determine individual M dwarf masses M_A=0.53+/-0.10 Msun, M_B=0.43+/-0.04Msun, and M_C=0.41+/-0.04Msun. The WD mass, 0.54+/-0.04Msun, comes from cooling models, an assumed Hyades age of 670My, and consistency with all previous and derived astrometric, photometric, and RV results. Velocities from H-alpha and He I emission lines confirm the BC period derived from absorption lines, with similar (He I) and higher (H-alpha) velocity amplitudes. We ascribe the larger H-alpha amplitude to emission from a region each component shadows from the other, depending on the line of sight.
description: To appear in The Astronomical Journal. Full tables and animation available here: https://www.dropbox.com/sh/cy71967po4u98xq/AAC1yWROgs7cPEFtjRTza9-ka?dl=0
Tomasz Kamusella, Schlonzska mowa. Język, Górny Śląsk i nacjonalizm
Creators: name: Struve, Kai
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2006

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 55 Nr. 4 (2006)
SKAO HI Intensity Mapping: Blind Foreground Subtraction Challenge
Creators: name: Spinelli, Marta
name: Carucci, Isabella P.
name: Cunnington, Steven
name: Harper, Stuart E.
name: Irfan, Melis O.
name: Fonseca, José
name: Pourtsidou, Alkistis
name: Wolz, Laura
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Neutral Hydrogen Intensity Mapping (HI IM) surveys will be a powerful new probe of cosmology. However, strong astrophysical foregrounds contaminate the signal and their coupling with instrumental systematics further increases the data cleaning complexity. In this work, we simulate a realistic single-dish HI IM survey of a $5000$~deg$^2$ patch in the $950 - 1400$ MHz range, with both the MID telescope of the SKA Observatory (SKAO) and MeerKAT, its precursor. We include a state-of-the-art HI simulations and explore different foreground models and instrumental effects such as non-homogeneous thermal noise and beam side-lobes. We perform the first Blind Foreground Subtraction Challenge for HI IM on these synthetic data-cubes, aiming to characterise the performance of available foreground cleaning methods with no prior knowledge of the sky components and noise level. Nine foreground cleaning pipelines joined the Challenge, based on statistical source separation algorithms, blind polynomial fitting, and an astrophysical-informed parametric fit to foregrounds. We devise metrics to compare the pipeline performances quantitatively. In general, they can recover the input maps' 2-point statistics within 20 per cent in the range of scales least affected by the telescope beam. However, spurious artefacts appear in the cleaned maps due to interactions between the foreground structure and the beam side-lobes. We conclude that it is fundamental to develop accurate beam deconvolution algorithms and test data post-processing steps carefully before cleaning. This study was performed as part of SKAO preparatory work by the HI IM Focus Group of the SKA Cosmology Science Working Group.
description: Accepted version for publication in MNRAS
Herders Auffassung des Volkslieds und der Dichtung und die lettischen Volksliedersammlungen des 19. Jahrhunderts
Creators: name: Scholz, Friedrich
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 1995

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 44 Nr. 4 (1995)
Mutual information disentangles interactions from changing environments
Creators: name: Nicoletti, Giorgio
name: Busiello, Daniel Maria
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Real-world systems are characterized by complex interactions of their internal degrees of freedom, while living in ever-changing environments whose net effect is to act as additional couplings. Here, we introduce a paradigmatic interacting model in a switching, but unobserved, environment. We show that the limiting properties of the mutual information of the system allow for a disentangling of these two sources of couplings. Further, our approach might stand as a general method to discriminate complex internal interactions from equally complex changing environments.
Historische Stereotypenforschung. Methodische Überlegungen und empirische Befunde
Creators: name: Dumschat, Sabine
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 1997

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 46 Nr. 3 (1997)
Baltische Bibliographie 2000. Schrifttum über Estland, Lettland, Litauen. Mit Nachträgen
Creators: name: Brüggemann, Karsten
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2006

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 55 Nr. 1 (2006)
Impact of Dairy Cooperatives on Federal Order Milk Markets
Creators: name: Davidson, Donald R.
name: Davidson, Donald R.
Publisher: name: Unknown
Year: 1963
Subjects: subject: Agribusiness
subject: Agricultural and Food Policy
subject: Livestock Production/Industries
subject: Marketing
subject: FOS: Economics and business

description: Excerpts from the report: Federal milk orders--now more than 80 of them altogether--cover some 190,000 dairymen, regulate almost half of the milk sold annually by dairy farmers to plants and dealers in the United States, and affect markets containing nearly three-fourths of the urban population of our country. The need for these Federal orders grew out of the depression of the early 30' s when most major milk markets became completely disorganized. In this period of low prices, unrest, and strikes, the orderly flow of milk was disrupted. State attempts at milk control tended to break down because of the large amount of milk moving in interstate commerce. Dairy cooperatives have been largely responsible in initiating action for obtaining orders and seeing that they work effectively. To gain a better understanding of the role currently taken by farmer-owned dairy organizations operating in Federally regulated marketing areas, Farmer Cooperative Service (FCS) in 1961 obtained information from market administrators concerning all dairy cooperatives in the 80 Federal order markets existing at that time. This resulting report is part of a larger continuing study of pooling practices used by dairy cooperatives conducted by FCS in cooperation with the Agricultural Marketing Service and the Economic Research Service of the U.S. Department of Agriculture.
Search for Correlations between HiRes Stereo Events and Active Galactic Nuclei
Creators: name: Abbasi, R. U.
name: Abu-Zayyad, T.
name: Allen, M.
name: Amman, J. F.
name: Archbold, G.
name: Belov, K.
name: Belz, J. W.
name: BenZvi, S. Y.
name: Bergman, D. R.
name: Blake, S. A.
name: Boyer, J. H.
name: Brusova, O. A.
name: Burt, G. W.
name: Cannon, C.
name: Cao, Z.
name: Deng, W.
name: Fedorova, Y.
name: Findlay, J.
name: Finley, C. B.
name: Gray, R. C.
name: Hanlon, W. F.
name: Hoffman, C. M.
name: Holzscheiter, M. H.
name: Hughes, G.
name: Huntemeyer, P.
name: Ivanov, D.
name: Jones, B. F
name: Jui, C. C. H.
name: Kim, K.
name: Kirn, M. A.
name: Knapp, B. C.
name: Loh, E. C.
name: Maestas, M. M.
name: Manago, N.
name: Mannel, E. J.
name: Marek, L. J.
name: Martens, K.
name: Matthews, J. N.
name: Moore, S. A.
name: O'Neill, A.
name: Painter, C. A.
name: Perera, L.
name: Reil, K.
name: Riehle, R.
name: Roberts, M. D.
name: Sasaki, D. Rodriguez N.
name: Schnetzer, S. R.
name: Scott, L. M.
name: Seman, M.
name: Sinnis, G.
name: Smith, J. D.
name: Snow, R.
name: Sokolsky, P.
name: Song, C.
name: Springer, R. W.
name: Stokes, B. T.
name: Stratton, S. R.
name: Thomas, J. R.
name: Thomas, S. B.
name: Thomson, G. B.
name: Tupa, D.
name: Wiencke, L. R.
name: Zech, A.
name: Zhang, X.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have searched for correlations between the pointing directions of ultrahigh energy cosmic rays observed by the High Resolution Fly's Eye experiment and Active Galactic Nuclei (AGN) visible from its northern hemisphere location. No correlations, other than random correlations, have been found. We report our results using search parameters prescribed by the Pierre Auger collaboration. Using these parameters, the Auger collaboration concludes that a positive correlation exists for sources visible to their southern hemisphere location. We also describe results using two methods for determining the chance probability of correlations: one in which a hypothesis is formed from scanning one half of the data and tested on the second half, and another which involves a scan over the entire data set. The most significant correlation found occurred with a chance probability of 24%.
description: 13 pages, 1 table, 5 figures
Design and consensus content validity of the questionnaire for b-learning education: A 2-Tuple Fuzzy Linguistic Delphi based Decision Support Tool
Creators: name: Montes, Rosana
name: Zuheros, Cristina
name: Morales, Jeovani M.
name: Zermeño, Noe
name: Duran, Jerónimo
name: Herrera, Francsico
Publisher: name: arXiv
Year: 2024
Subjects: subject: Computers and Society (cs.CY)
subject: Computation and Language (cs.CL)
subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: Classic Delphi and Fuzzy Delphi methods are used to test content validity of data collection tools such as questionnaires. Fuzzy Delphi takes the opinion issued by judges from a linguistic perspective reducing ambiguity in opinions by using fuzzy numbers. We propose an extension named 2-Tuple Fuzzy Linguistic Delphi method to deal with scenarios in which judges show different expertise degrees by using fuzzy multigranular semantics of the linguistic terms and to obtain intermediate and final results expressed by 2-tuple linguistic values. The key idea of our proposal is to validate the full questionnaire by means of the evaluation of its parts, defining the validity of each item as a Decision Making problem. Taking the opinion of experts, we measure the degree of consensus, the degree of consistency, and the linguistic score of each item, in order to detect those items that affect, positively or negatively, the quality of the instrument. Considering the real need to evaluate a b-learning educational experience with a consensual questionnaire, we present a Decision Making model for questionnaire validation that solves it. Additionally, we contribute to this consensus reaching problem by developing an online tool under GPL v3 license. The software visualizes the collective valuations for each iteration and assists to determine which parts of the questionnaire should be modified to reach a consensual solution.
description: 47 pages, 7 figures
Year 1 of the ZTF high-cadence Galactic Plane Survey: Strategy, goals, and early results on new single-mode hot subdwarf B-star pulsators
Creators: name: Kupfer, Thomas
name: Prince, Thomas A.
name: van Roestel, Jan
name: Bellm, Eric C.
name: Bildsten, Lars
name: Coughlin, Michael W.
name: Drake, Andrew J.
name: Graham, Matthew J.
name: Klein, Courtney
name: Kulkarni, Shrinivas R.
name: Masci, Frank J.
name: Walters, Richard
name: Andreoni, Igor
name: Biswas, Rahul
name: Bradshaw, Corey
name: Duev, Dmitry A.
name: Dekany, Richard
name: Guidry, Joseph A.
name: Hermes, JJ
name: Laher, Russ R.
name: Riddle, Reed
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present the goals, strategy and first results of the high-cadence Galactic plane survey using the Zwicky Transient Facility (ZTF). The goal of the survey is to unveil the Galactic population of short-period variable stars, including short period binaries and stellar pulsators with periods less than a few hours. Between June 2018 and January 2019, we observed 64 ZTF fields resulting in 2990 deg$^2$ of high stellar density in ZTF-$r$ band along the Galactic Plane. Each field was observed continuously for 1.5 to 6 hrs with a cadence of 40 sec. Most fields have between 200 and 400 observations obtained over 2-3 continuous nights. As part of this survey we extract a total of $\approx$230 million individual objects with at least 80 epochs obtained during the high-cadence Galactic Plane survey reaching an average depth of ZTF-$r$ $\approx$20.5 mag. For four selected fields with 2 million to 10 million individual objects per field we calculate different variability statistics and find that $\approx$1-2% of the objects are astrophysically variable over the observed period. We present a progress report on recent discoveries, including a new class of compact pulsators, the first members of a new class of Roche Lobe filling hot subdwarf binaries as well as new ultracompact double white dwarfs and flaring stars. Finally we present a sample of 12 new single-mode hot subdwarf B-star pulsators with pulsation amplitudes between ZTF-$r$ = 20-76 mmag and pulsation periods between $P$ = 5.8-16 min with a strong cluster of systems with periods $\approx$ 6 min. All of the data have now been released in either ZTF Data Release 3 or data release 4.
description: accepted for publication in MNRAS, 16 pages, 10 figures and 5 tables
Emanzipation – Nation – Konfession. Der Diskurs über weibliche Erwerbsarbeit bei den Deutschbalten (1880er Jahre bis 1910)
Creators: name: Boden, Ragna
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2007

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 56 Nr. 4 (2007)
Phase transitions in higher derivative gravity and gauge theory: R-charged black holes
Creators: name: Dey, Tanay K.
name: Mukherji, Sudipta
name: Mukhopadhyay, Subir
name: Sarkar, Swarnendu
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: This is a continuation of our earlier work where we constructed a phenomenologically motivated effective action of the boundary gauge theory at finite temperature and finite gauge coupling on $S^3 \times S^1$. In this paper, we argue that this effective action qualitatively reproduces the gauge theory representing various bulk phases of R-charged black hole with Gauss-Bonnet correction. We analyze the system both in canonical and grand canonical ensemble.
description: 36 pages, 16 figures; v2: typos corrected, references added
Zooming in on heavy fermions in Kondo lattice models
Creators: name: Danu, Bimla
name: Liu, Zihong
name: Assaad, Fakher F.
name: Raczkowski, Marcin
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Resolving the heavy fermion band in the conduction electron momentum resolved spectral function of the Kondo lattice model is challenging since, in the weak coupling limit, its spectral weight is exponentially small. In this article we consider a composite fermion operator, consisting of a conduction electron dressed by spin fluctuations that shares the same quantum numbers as the electron operator. Using approximation free auxiliary field quantum Monte Carlo simulations we show that for the SU(2) spin-symmetric model on the square lattice at half filling, the composite fermion acts as a magnifying glass for the heavy fermion band. In comparison to the conduction electron residue that scales as $e^{-W/J_k}$ with $W$ the bandwidth and $J_k$ the Kondo coupling, the residue of the composite fermion tracks $J_k$. This result holds down to $J_k/W = 0.05$, and confirms the point of view that magnetic ordering, present below $J_k/W = 0.18$, does not destroy the heavy quasiparticle. We furthermore investigate the spectral function of the composite fermion in the ground state and at finite temperatures, for SU($N$) generalizations of the Kondo lattice model, as well as for ferromagnetic Kondo couplings, and compare our results to analytical calculations in the limit of high temperatures, large-$N$, large-$S$, and large $J_k$. Based on these calculations, we conjecture that the composite fermion operator provides a unique tool to study the destruction of the heavy fermion quasiparticle in Kondo breakdown transitions. The relation of our results to scanning tunneling spectroscopy and photoemission experiments is discussed.
description: 16 pages, 14 figures, typos corrected
Riga im Rahmen der Handelsmetropolen und Zahlungsströme des Ost-Westverkehrs am Ende des 18. Jahrhunderts
Creators: name: Harder-Gersdorff, Elisabeth
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 1995

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 44 Nr. 4 (1995)
Neural Algorithmic Reasoning
Creators: name: Veličković, Petar
name: Blundell, Charles
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Artificial Intelligence (cs.AI)
subject: Data Structures and Algorithms (cs.DS)
subject: Optimization and Control (math.OC)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: Algorithms have been fundamental to recent global technological advances and, in particular, they have been the cornerstone of technical advances in one field rapidly being applied to another. We argue that algorithms possess fundamentally different qualities to deep learning methods, and this strongly suggests that, were deep learning methods better able to mimic algorithms, generalisation of the sort seen with algorithms would become possible with deep learning -- something far out of the reach of current machine learning methods. Furthermore, by representing elements in a continuous space of learnt algorithms, neural networks are able to adapt known algorithms more closely to real-world problems, potentially finding more efficient and pragmatic solutions than those proposed by human computer scientists. Here we present neural algorithmic reasoning -- the art of building neural networks that are able to execute algorithmic computation -- and provide our opinion on its transformative potential for running classical algorithms on inputs previously considered inaccessible to them.
description: Accepted as an Opinion paper in Patterns. 7 pages, 1 figure
Brane Vector Phenomenology
Creators: name: Clark, T. E.
name: Love, S. T.
name: Nitta, Muneto
name: ter Veldhuis, T.
name: Xiong, C.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Local oscillations of the brane world are manifested as masssive vector fields. Their coupling to the Standard Model can be obtained using the method of nonlinear realizations of the spontaneously broken higher dimensional space-time symmetries, and to an extent, are model independent. Phenomenological limits on these vector field parameters are obtained using LEP collider data and dark matter constraints.
description: 3 pages, 2 figures, latex
A strong coupling expansion for N=4 SYM theory and other SCFT's
Creators: name: Berenstein, David
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Recent progress towards understanding a strong coupling expansion for various superconformal field theories in four dimensions is described. First, the case of the maximally supersymmetric Yang Mills theory is analyzed, as well as many calculations that can be done directly at strong coupling and matched to the AdS dual geometry. Also, this understanding is extended to other AdS duals where the sphere is replaced by a Sasaki-Einstein manifold. Particular emphasis is made on matching exactly part of the supergravity dual spectrum of various of these field theories by using wave function methods.
description: 10 pages, Contribution to the proceedings of the Osaka Workshop, OCU2007
Landau-Zener Transitions in an Adiabatic Quantum Computer
Creators: name: Johansson, J.
name: Amin, M. H. S.
name: Berkley, A. J.
name: Bunyk, P.
name: Choi, V.
name: Harris, R.
name: Johnson, M. W.
name: Lanting, T. M.
name: Lloyd, Seth
name: Rose, G.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Superconductivity (cond-mat.supr-con)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We report an experimental measurement of Landau-Zener transitions on an individual flux qubit within a multi-qubit superconducting chip designed for adiabatic quantum computation. The method used isolates a single qubit, tunes its tunneling amplitude Delta into the limit where Delta is much less than both the temperature T and the decoherence-induced energy level broadening, and forces it to undergo a Landau-Zener transition. We find that the behavior of the qubit agrees to a high degree of accuracy with theoretical predictions for Landau-Zener transition probabilities for a double-well quantum system coupled to 1/f magnetic flux noise.
description: 4 pages, 4 figures
Kondo quantum dot coupled to ferromagnetic leads: Numerical renormalization group study
Creators: name: Sindel, M.
name: Borda, L.
name: Martinek, J.
name: Bulla, R.
name: Koenig, J.
name: Schoen, G.
name: Maekawa, S.
name: von Delft, J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We systematically study the influence of ferromagnetic leads on the Kondo resonance in a quantum dot tuned to the local moment regime. We employ Wilson's numerical renormalization group method, extended to handle leads with a spin asymmetric density of states, to identify the effects of (i) a finite spin polarization in the leads (at the Fermi-surface), (ii) a Stoner splitting in the bands (governed by the band edges) and (iii) an arbitrary shape of the leads density of states. For a generic lead density of states the quantum dot favors being occupied by a particular spin-species due to exchange interaction with ferromagnetic leads leading to a suppression and splitting of the Kondo resonance. The application of a magnetic field can compensate this asymmetry restoring the Kondo effect. We study both the gate-voltage dependence (for a fixed band structure in the leads) and the spin polarization dependence (for fixed gate voltage) of this compensation field for various types of bands. Interestingly, we find that the full recovery of the Kondo resonance of a quantum dot in presence of leads with an energy dependent density of states is not only possible by an appropriately tuned external magnetic field but also via an appropriately tuned gate voltage. For flat bands simple formulas for the splitting of the local level as a function of the spin polarization and gate voltage are given.
description: 18 pages, 18 figures, accepted for publication in PRB
การศึกษาคุณสมบัติการต้านจุลชีพของโปรตีนลูกผสม Shrimp Ovarian Peritrophin domain A (SOP-A) จาก Fenneropenaeus merguiensis  (Antimicrobial  Activity  of  Shrimp Ovarian Peritrophin  Domain  A  (SOP-A) Recombinant Protein from Fenneropenaeus Merguiensis)
Creators: name: สุจรรยา อนุชาญ
Publisher: name: Genetics Society of Thailand
Year: 2013
Subjects: SOP-A, antimicrobial, Fenneropenaeus merguiensis

description: S1 (Special Issue 1), S.1, Thai Journal of Genetics
Constraints on Weak Supernova Kicks from Observed Pulsar Velocities
Creators: name: Willcox, Reinhold
name: Mandel, Ilya
name: Thrane, Eric
name: Deller, Adam
name: Stevenson, Simon
name: Vigna-Gómez, Alejandro
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Observations of binary pulsars and pulsars in globular clusters suggest that at least some pulsars must receive weak natal kicks at birth. If all pulsars received strong natal kicks above \unit[50]{\kms}, those born in globular clusters would predominantly escape, while wide binaries would be disrupted. On the other hand, observations of transverse velocities of isolated radio pulsars indicate that only $5\pm2\%$ have velocities below \unit[50]{\kms}. We explore this apparent tension with rapid binary population synthesis modelling. We propose a model in which supernovae with characteristically low natal kicks (e.g., electron-capture supernovae) only occur if the progenitor star has been stripped via binary interaction with a companion. We show that this model naturally reproduces the observed pulsar speed distribution and without reducing the predicted merging double neutron star yield. We estimate that the zero-age main sequence mass range for non-interacting progenitors of electron-capture supernovae should be no wider than ${\approx}0.2 M_\odot$.
description: 7 pages including figures, tables, and references. 3 figures including 5 pdfs, and 1 table
Final Report iDSI Country Learning Review: Indonesia
Creators: name: Gleed, Greg
Publisher: name: F1000 Research Limited
Year: 2019

description: Between May and July 2018, Itad  conducted a Learning Review of the International Decision Support  Initiative’s (iDSI’s) work in Indonesia. The purpose was to review the scope of iDSI’s engagement at country level between July 2016 and July 2018 and investigate how iDSI is contributing to  the evidence - informed priority setting (EIPS) agenda in Indonesia. Using the country focused pillar of the recently revised  iDSI theory of change (ToC 2) as a framework, the review explores what  has been working effectively and where there might be scope for course correction or refinements to  iDSI’s future strategy.
Minigap suppression in S(N/F)S junctions
Creators: name: Ioselevich, P. A.
name: Chuklanov, D. A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We consider a long diffusive Josephson junction where the weak link is a thin normal metal (N) - ferromagnetic (F) bilayer (N and F form parallel links between the superconductors (S)). We show that superconductivity in the weak link can be described by an effective one-dimensional Usadel equation containing a "diluted" exchange field as well as a weak depairing term that is caused by the inherent inhomogeneity of the bilayer. The depairing mechanism distinguishes the S(N/F)S system from an SFS junction and affects the density of states of the S(N/F)S junction. It results in the suppression of the minigap in the spin-resolved density of states. The depairing rate and the minigap are expressed in terms of geometrical parameters, the Thouless energy and the effective exchange field. The effective one-dimensional theory can be applied to various structures with thin inhomogenous links and shows good agreement with numerical solutions of the original two-dimensional equations. We also discuss ways to reveal the predicted effect experimentally.
description: 6 pages, 3 figures
Efficient transfer learning for NLP with ELECTRA
Creators: name: Mercier, François
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computation and Language (cs.CL)
subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Clark et al. [2020] claims that the ELECTRA approach is highly efficient in NLP performances relative to computation budget. As such, this reproducibility study focus on this claim, summarized by the following question: Can we use ELECTRA to achieve close to SOTA performances for NLP in low-resource settings, in term of compute cost?
description: Submission for ML Reproducibility Challenge 2020
Uncovering the Chemical Signature of the First Stars in the Universe
Creators: name: Karlsson, Torgny
name: Johnson, Jarrett L.
name: Bromm, Volker
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The chemical abundance patterns observed in metal-poor Galactic halo stars contain the signature of the first supernovae, and thus allows us to probe the first stars that formed in the universe. We construct a theoretical model for the early chemical enrichment history of the Milky Way, aiming in particular at the contribution from pair-instability supernovae (PISNe). These are a natural consequence of current theoretical models for primordial star formation at the highest masses. However, no metal-poor star displaying the distinct PISN signature has yet been observed. We here argue that this apparent absence of any PISN signature is due to an observational selection effect. Whereas most surveys traditionally focus on the most metal-poor stars, we predict that early PISN enrichment tends to `overshoot', reaching enrichment levels of [Ca/H] ~= -2.5 that would be missed by current searches. We utilize existing observational data to place constraints on the primordial initial mass function (IMF). The number fraction of PISNe in the primordial stellar population is estimated to be <0.07, or ~< 40% by mass, assuming that metal-free stars have masses in excess of 10 M_sun. We further predict, based on theoretical estimates for the relative number of PISNe, that the expected fraction of second generation stars below [Ca/H]=-2 with a dominant (i.e., >90%) contribution from PISNe is merely ~1e-4 - 5e-4. The corresponding fraction of stars formed from gas exclusively enriched by PISNe is a factor of ~4 smaller. With the advent of next generation telescopes and new, deeper surveys, we should be able to test these predictions.
description: 17 pages, 6 figures, v2: mainly improvements on presentation, table added, references added, figure 6 modified, accepted for publication in ApJ
Zwischen Konfrontation und Kompromiß. Oldenburger Symposium: "Interethnische Beziehungen in Ostmitteleuropa als historiographisches Problem der 1930er/1940er Jahre"
Creators: name: Brüggemann, Karsten
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 1997

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 46 Nr. 3 (1997)
Microscale fluid flow induced by thermoviscous expansion along a traveling wave
Creators: name: Weinert, Franz M.
name: Kraus, Jonas A.
name: Franosch, Thomas
name: Braun, Dieter
Publisher: name: arXiv
Year: 2008
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: The thermal expansion of a fluid combined with a temperature-dependent viscosity introduces nonlinearities in the Navier-Stokes equations unrelated to the convective momentum current. The couplings generate the possibility for net fluid flow at the microscale controlled by external heating. This novel thermo-mechanical effect is investigated for a thin fluid chamber by a numerical solution of the Navier-Stokes equations and analytically by a perturbation expansion. A demonstration experiment confirms the basic mechanism and quantitatively validates our theoretical analysis.
description: 5 pages, 3 figures, accepted by Physical Review Letters
Self-consistent $O(4)$ model spectral functions from analytically continued FRG flows
Creators: name: Jung, Christopher
name: Otto, Jan-Hendrik
name: Tripolt, Ralf-Arno
name: von Smekal, Lorenz
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: In this paper we explore practicable ways for self-consistent calculations of spectral functions from analytically continued functional renormalization group (aFRG) flow equations. As a particularly straightforward one we propose to include parametrizations of self-energies based on explicit analytic one-loop expressions. To exemplify this scheme we calculate the spectral functions of pion and sigma meson of the $O(4)$ model at vanishing temperature in the broken phase. Comparing the results with those from previous aFRG calculations, we explicitly demonstrate how self-consistency at all momenta fixes the tight relation between particle masses and decay thresholds. In addition, the two-point functions from our new semi-analytic FRG scheme have the desired domain of holomorphy built in and can readily be studied in the entire cut-complex frequency plane, on physical as well as other Riemann sheets. This is very illustrative and allows, for example, to trace the flow of the resonance pole of the sigma meson across an unphysical sheet. In order to assess the limitations due to the underlying one-loop structure, we also introduce a fully self-consistent numerical scheme based on spectral representations with scale-dependent spectral functions. The most notable improvement of this numerically involved calculation is that it describes the three-particle resonance decay of an off-shell pion, $π^* \to σπ\to3π$. Apart from this further conceptual improvement, overall agreement with the results from the considerably simpler semi-analytic one-loop scheme is very encouraging, however. The latter can therefore provide a sound and practicable basis for self-consistent calculations of spectral functions in more realistic effective theories for warm and dense matter.
description: 21 pages, 16 figures v2: minor changes, agrees with published version
Pressure-induced superconductivity in single crystal CaFe2As2
Creators: name: Park, Tuson
name: Park, Eunsung
name: Lee, Hanoh
name: Klimczuk, T.
name: Bauer, E D
name: Ronning, F
name: Thompson, J D
Publisher: name: arXiv
Year: 2008
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We report pressure-induced superconductivity in a single crystal of CaFe2As2. At atmospheric pressure, this material is antiferromagnetic below 170 K but under an applied pressure of 0.69 GPa becomes superconducting, with a transition temperature Tc exceeding 10 K. The rate of Tc suppression with applied magnetic field is -0.7 K/T, giving an extrapolated zero-temperature upper critical field of 10-14T.
description: Accepted to J. Phys.: Condens. Matter (7 pages, 2 figures)
Recycling Matter in the Universe. X-ray observations of SBS 1150+599A (PN G135.9+55.9)
Creators: name: Tovmassian, Gagik
name: Tomsick, John
name: Napiwotzki, Ralf
name: Yungelson, Lev
name: Peña, Miriam
name: Stasińska, Grazyna
name: Richer, Michael
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present X-ray observations of the close binary nucleus of the planetary nebula SBS 1150+599A obtained with the XMM-Newton satellite. Only one component of the binary can be observed in optical-UV. New X-ray observations show that the previously invisible component is a very hot compact star. This finding allows us to deduce rough values for the basic parameters of the binary. With a high probability the total mass of the system exceeds Chandrasekhar limit and makes the SBS 1150+599A one of the best candidate for a supernova type Ia progenitor.
description: 4 pages, 2 figures, submitted to the Proceedings of the conference "Astrophysics of Compact Objects", Huangshan, China, July 1 - 7, 2007
Holokausta izpēte Latvijā. Starpaustiko konferenču materiāli, 2003. gada 12.-13 jūnijs, 24. oktobris, Rīga, un 2002.-2003. gada pētījumi par holokaustu Latvijā. The Holocaust Research in Latvia. Materials of an Inte
Creators: name: Felder, Björn M.
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2006

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 55 Nr. 1 (2006)
Final ReportiDSI Country Learning Review: South Africa
Creators: name: Genevive  Groom
Publisher: name: F1000 Research Limited
Year: 2019

description: This Desk Review of International Decision Support Initiative’s (iDSI’s) work in South Africa is intended to supplement the deep dive Country Learning Reviews that Itad has undertaken in China and Indonesia. In contrast to the Country Learning Reviews, it is not intended to provide a robust ‘contribution story’ of iDSI’s contribution to components of the theory of change (ToC). Rather, the purpose of the review is to construct a narrative about iDSI’s work in South Africa, in order to build a picture of iDSI’s history, timeline and trajectory in the country.
On Matrix Superpotential and Three-Component Normal Modes
Creators: name: Rodrigues, R. de Lima
name: de Lima, A. F.
name: de Mello, E. R. Bezerra
name: Bezerra, V. B.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider the supersymmetric quantum mechanics (SUSY QM) with three- component normal modes for the Bogomol'nyi-Prasad-Sommerfield (BPS) states. An explicit form of the SUSY QM matrix superpotential is presented and the corresponding three-component bosonic zero-mode eigenfunction is investigated.
description: 17 pages, no figure. Paper accepted for publication in Journal of Physics A: Mathematical and Theoretical
Final Report: iDSI learning review: Ghana
Creators: name: Genevive Groom
Publisher: name: F1000 Research Limited
Year: 2019

description: This desk review of the International Decision Support Initiative’s (iDSI’s) work in Ghana is intended to supplement the deep dive Country Learning Reviews that Itad have undertaken in China and Indonesia between May and July 2018. In contrast to the Country Learning Reviews, it is not intended to provide a robust ‘contribution story’ of iDSI’s contribution to components of the theory of change. Rather, the purpose of the review is to construct a narrative about iDSI’s work in Ghana, in order to build a picture of iDSI’s history, timeline and trajectory in the country.
Vorposten – oder auf verlorenem Posten? Die Universitäten Straßburg und Jur’ev 1872/1887-1918
Creators: name: Maurer, Trude
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2007

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 56 Nr. 4 (2007)
GHG emissions in the EU-28. A multilevel club convergence study of the Emission Trading System and Effort Sharing Decision mechanisms
Creators: name: Presno, María José
name: Landajo, Manuel
name: González, Paula Fernández
Publisher: name: arXiv
Year: 2024
Subjects: subject: General Economics (econ.GN)
subject: FOS: Economics and business

description: The European Union is engaged in the fight against climate change. A crucial issue to enforce common environmental guidelines is environmental convergence. States converging in environmental variables are expected to be able to jointly develop and implement environmental policies. Convergence in environmental indicators may also help determine the efficiency and speed of those policies. This paper employs a multilevel club convergence approach to analyze convergence in the evolution of GHG emissions among the EU-28 members, on a search for countries transitioning from disequilibrium to specific steady-state positions. Overall convergence is rejected, with club composition depending on the specific period (1990-2017, 2005-2017) and emissions categories (global, ETS, ESD) analyzed. Some countries (e.g. the United Kingdom and Denmark) are consistently located in clubs outperforming the EU's average in terms of speed of emissions reductions, for both the whole and the most recent periods, and for both ETS and ESD emissions. At the other end, Germany (with a large industrial and export basis), Ireland (with the strongest GDP growth in the EU in recent years) and most Eastern EU members underperform after 2005, almost reversing their previous positions when the study begins in 1990.
description: This manuscript is an early draft of Presno, M.J., Landajo, M., Fern\'andez Gonz\'alez, P. (2021): "GHG emissions in the EU-28. A multilevel club convergence study of the Emission Trading System and Effort Sharing Decision mechanisms," Sustainable Production and Consumption, Vol. 27, pp. 998-1009. The final version of the paper is available at the Journal's web page
Visita Multiprofissional: implantação e aprendizagem em Unidade Neonatal de um Hospital Universitário
Creators: name: Costa, Fernanda Dalla
name: Catão, Fátima
Publisher: name: figshare
Year: 2020
Subjects: subject: 130304 Educational Administration, Management and Leadership
subject: FOS: Educational sciences

description: O elevado número de recém-nascidos prematuros e de baixo peso ao nascimento constitui um importante problema de saúde com graves consequências médicas e sociais. Para elevar o padrão do atendimento das unidades hospitalares, como a de Cuidado Neonatal, o Sistema Único de Saúde (SUS), baseado no modelo biopsicossocial de atenção, recomenda a visita multiprofissional atendendo ao princípio da integralidade na saúde e ao processo de aprendizagem permanente nos contextos de trabalho. Essa prática promissora ainda não está sendo desenvolvida na unidade neonatal do Hospital Universitário Lauro Wanderley (HULW). Neste direcionamento, essa pesquisa tem por objetivo propor um plano de implantação da visita multiprofissional a partir das elaborações produzidas pela equipe de trabalho da Unidade de Cuidado Intermediário Neonatal Convencional (UCINCo) do HULW. Neste estudo de base qualitativa, trabalhou-se com observação participante, entrevista semiestruturada e análise de conteúdo temática com uso do sistema ALCESTE de análise de dados textuais. Os resultados do estudo demonstraram que há práticas multidisciplinares na UCINCo e a equipe percebe a sua importância, porém ainda prevalecem as decisões centralizadas no profissional de medicina, sem uma discussão efetiva com a equipe. Os profissionais relatam a falta de um espaço para compartilhamento de ideias e discussão dos casos clínicos; acreditam que a visita multiprofissional possa remediar essa deficiência, melhorando a qualidade da assistência ao paciente e contribuindo para melhor integração da equipe, além de ser uma importante ferramenta para a aprendizagem no campo de trabalho. Foi possível traçar um plano de ação para a implantação da visita multiprofissional na UCINCo – HULW, contemplando os eixos temáticos postos pela equipe, capturados pela análise de conteúdo das falas. Conclui-se que o planejamento e a proposta de implantação da visita poderá proporcionar um aprendizado contínuo da equipe na construção da assistência mais humanizada e qualificada aos pacientes, oferecendo, também, melhores condições laborais aos profissionais de saúde.