cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Langmuir waves dispersion in semi-relativistic spinless quantum plasmas
Creators: name: Ivanov, A. Yu.
name: Andreev, P. A.
name: Kuzmenkov, L. S.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Many particle quantum hydrodynamics based on the Darwin Hamiltonian (the Hamiltonian corresponding to the Darwin Lagrangian) is considered. A force field appearing in corresponding Euler equation is considered in details. Contributions from different terms of the Darwin Hamiltonian in the Euler equation are traced. For example, the relativistic correction to the kinetic energy of particles leads to several terms in the Euler equation, these terms have different form. One of them has a form similar to a term appearing from the Darwin term. Hence, the two different mechanisms give analogous contributions in wave dispersion. Microscopic analog of the Biot-Savart law, called the current-current interaction and describing an interaction of moving charges via the magnetic field, is also included in our description. The semi-relativistic generalization of the quantum Bohm potential is obtained. Contribution of the relativistic effects in the spectrum of plasma collective excitations is considered.
description: 9 pages
Hybrid resonance of Maxwell's equations in slab geometry
Creators: name: Després, Bruno
name: Imbert-Gérard, Lise-Marie
name: Weder, Ricardo
Publisher: name: arXiv
Year: 2012
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 2010: 35Q61, 78A25

description: Hybrid resonance is a physical mechanism for the heating of a magnetic plasma. In our context hybrid resonance is a solution of the time harmonic Maxwell's equations with smooth coefficients, where the dielectric tensor is a non diagonal hermitian matrix. The main part of this work is dedicated to the construction and analysis of a mathematical solution of the hybrid resonance with the limit absorption principle. We prove that the limit solution is singular: it is constituted of a Dirac mass at the origin plus a principle value and a smooth square integrable function. The formula obtained for the plasma heating is directly related to the singularity.
description: This published version has been edited to improve the presentation of the results
Multi-Wavelength Observations of Supernova 2011ei: Time-Dependent Classification of Type IIb and Ib Supernovae and Implications for their Progenitors
Creators: name: Milisavljevic, D.
name: Margutti, R.
name: Soderberg, A. M.
name: Pignata, G.
name: Chomiuk, L.
name: Fesen, R.
name: Bufano, F.
name: Sanders, N. E.
name: Parrent, J. T.
name: Parker, S.
name: Mazzali, P.
name: Pian, E.
name: Pickering, T.
name: Buckley, D.
name: Crawford, S.
name: Gulbis, A. A. M.
name: Hettlage, C.
name: Hooper, E.
name: Nordsieck, K.
name: O'Donoghue, D.
name: Husser, T. -O.
name: Potter, S.
name: Kniazev, A.
name: Kotze, P.
name: Romero-Colmenero, E.
name: Vaisanen, P.
name: Wolf, M.
name: Bietenholz, M.
name: Bartel, N.
name: Fransson, C.
name: Walker, E. S.
name: Brunthaler, A.
name: Chakraborti, S.
name: Levesque, E. M.
name: MacFadyen, A.
name: Drescher, C.
name: Bock, G.
name: Marples, P.
name: Anderson, J. P.
name: Benetti, S.
name: Reichart, D.
name: Ivarsen, K.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present X-ray, UV/optical, and radio observations of the stripped-envelope, core-collapse supernova (SN) 2011ei, one of the least luminous SNe IIb or Ib observed to date. Our observations begin with a discovery within 1 day of explosion and span several months afterward. Early optical spectra exhibit broad, Type II-like hydrogen Balmer profiles that subside rapidly and are replaced by Type Ib-like He-rich features on the timescale of one week. High-cadence monitoring of this transition suggests that absorption attributable to a high velocity (> 12,000 km/s) H-rich shell is not rare in Type Ib events. Radio observations imply a shock velocity of v = 0.13c and a progenitor star mass-loss rate of 1.4 x 10^{-5} Msun yr^{-1} (assuming wind velocity v_w=10^3 km/s). This is consistent with independent constraints from deep X-ray observations with Swift-XRT and Chandra. Overall, the multi-wavelength properties of SN 2011ei are consistent with the explosion of a lower-mass (3-4 Msun), compact (R* <= 1x10^{11} cm), He core star. The star retained a thin hydrogen envelope at the time of explosion, and was embedded in an inhomogeneous circumstellar wind suggestive of modest episodic mass-loss. We conclude that SN 2011ei's rapid spectral metamorphosis is indicative of time-dependent classifications that bias estimates of explosion rates for Type IIb and Ib objects, and that important information about a progenitor star's evolutionary state and mass-loss immediately prior to SN explosion can be inferred from timely multi-wavelength observations.
description: 20 pages, 19 figures, accepted for publication in the Astrophysical Journal
Entanglement production in non-ideal cavities and optimal opacity
Creators: name: Villamaina, Dario
name: Vivo, Pierpaolo
Publisher: name: arXiv
Year: 2012
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Mathematical Physics (math-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We compute analytically the distributions of concurrence $\bm{\mathcal{C}}$ and squared norm $\bm{\mathcal{N}}$ for the production of electronic entanglement in a chaotic quantum dot. The dot is connected to the external world via one ideal and one partially transparent lead, characterized by the opacity $γ$. The average concurrence increases with $γ$ while the average squared norm of the entangled state decreases, making it less likely to be detected. When a minimal detectable norm $\bm{\mathcal{N}}_0$ is required, the average concurrence is maximal for an optimal value of the opacity $γ^\star(\bm{\mathcal{N}}_0)$ which is explicitly computed as a function of $\bm{\mathcal{N}}_0$. If $\bm{\mathcal{N}}_0$ is larger than the critical value $\bm{\mathcal{N}}_0^\star\simeq 0.3693\dots$, the average entanglement production is maximal for the completely ideal case, a direct consequence of an interesting bifurcation effect.
description: 4 pages, 4 figures + supplementary material with one figure. Major revisions. Title and abstract changed. arXiv admin note: text overlap with arXiv:0712.0623 by other authors
Thomas Just, Kathrin Kininger, Andrea Sommerlechner, Herwig Weigl (Hg.), Privilegium maius. Autopsie, Kontext und Karriere der Fälschungen Rudolfs IV. von Österreich, Wien (Böhlau) 2018
Creators: name: Guyotjeannin, Olivier
Publisher: name: Francia-Recensio
Year: 2019

description: Thomas Just, Kathrin Kininger, Andrea Sommerlechner, Herwig Weigl (Hg.), Privilegium maius. Autopsie, Kontext und Karriere der Fälschungen Rudolfs IV. von Österreich, Wien (Böhlau) 2018, 388 S. (Veröffentlichungen des Instituts für Österreichische Geschichtsforschung, 69. Mitteilungen des Österreichischen Staatsarchivs. Sonderband, 15), ISBN 978-3-205-20049-9, EUR 70,00.
description: Francia-Recensio, 2019/3
Daniela Blum, Multikonfessionalität im Alltag. Speyer zwischen politischem Frieden und Bekenntnisernst (1555–1618), Münster (Aschendorff) 2015
Creators: name: Duhamelle, Christophe
Publisher: name: Francia-Recensio
Year: 2019

description: Daniela Blum, Multikonfessionalität im Alltag. Speyer zwischen politischem Frieden und Bekenntnisernst (1555–1618), Münster (Aschendorff) 2015, 411 S. (Reformationsgeschichtliche Studien und Texte, 162), ISBN 978-3-402-11586-2, EUR 56,00.
description: Francia-Recensio, 2019/3
The network source location problem: ground state energy, entropy and effects of freezing
Creators: name: Huang, Haiping
name: Raymond, Jack
name: Wong, K. Y. Michael
Publisher: name: arXiv
Year: 2012
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: Ground state entropy of the network source location problem is evaluated at both the replica symmetric level and one-step replica symmetry breaking level using the entropic cavity method. The regime that is a focus of this study, is closely related to the vertex cover problem with randomly quenched covered nodes. The resulting entropic message passing inspired decimation and reinforcement algorithms are used to identify the optimal location of sources in single instances of transportation networks. The conventional belief propagation without taking the entropic effect into account is also compared. We find that in the glassy phase the entropic message passing inspired decimation yields a lower ground state energy compared to the belief propagation without taking the entropic effect. Using the extremal optimization algorithm, we study the ground state energy and the fraction of frozen hubs, and extend the algorithm to collect statistics of the entropy. The theoretical results are compared with the extremal optimization results.
description: 26 pages, 11 figures, Journal of Statistical Physics (in press)
Der Messwert der Bodenfeuchte - Eine zusätzliche Messgröße für den präzisen Feldbau
Creators: name: Jantschke, Cornelius
name: Knappenberger, Thorsten
name: Köller, Karlheinz
Publisher: name: LANDTECHNIK
Year: 2005

description: Die regelnde und dokumentierende Erfassung des Feuchtewertes ermöglicht der landwirtschaftlichen Praxis ein hohes Maß an Innovation. Durch die Kombination verschiedener Felddaten können Zusammenhänge erfasst und durch die Einbeziehung von Wetterdaten eine hydrologische Schnellbewertung eines Schlages durchgeführt werden. Neben der direkten Maschinenregelung auf Basis der vorliegenden Bodenfeuchte ist es so durch die dynamischen Erfassung der Feuchte möglich, den präzisen Feldbau um ein weiteres wertvolles Informationsmodul zu erweitern.
description: LANDTECHNIK, Bd. 60 Nr. 3 (2005)
Collective Excitation Interferometry with a Toroidal Bose-Einstein Condensate
Creators: name: Marti, G. Edward
name: Olf, Ryan
name: Stamper-Kurn, Dan M.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Atomic Physics (physics.atom-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The precision of compact inertial sensing schemes using trapped- and guided-atom interferometers has been limited by uncontrolled phase errors caused by trapping potentials and interactions. Here, we propose an acoustic interferometer that uses sound waves in a toroidal Bose-Einstein condensate to measure rotation, and we demonstrate experimentally several key aspects of this type of interferometer. We use spatially patterned light beams to excite counter-propagating sound waves within the condensate and use \emph{in situ} absorption imaging to characterize their evolution. We present an analysis technique by which we extract separately the oscillation frequencies of the standing-wave acoustic modes, the frequency splitting caused by static imperfections in the trapping potential, and the characteristic precession of the standing-wave pattern due to rotation. Supported by analytic and numerical calculations, we interpret the noise in our measurements, which is dominated by atom shot noise, in terms of rotation noise. While the noise of our acoustic interferometric sensor, at the level of $\sim \mbox{rad}\, \mbox{s}^{-1}/\sqrt{\mbox{Hz}}$, is high owing to rapid acoustic damping and the small radius of the trap, the proof-of-concept device does operate at $10^4 - 10^6$ times higher density and in a volume $10^9$ times smaller than free-falling atom interferometers.
description: 11 pages including supplemental material, 7 figures
Top Quark Asymmetries and Unparticle Physics
Creators: name: Khatibi, Sara
name: Najafabadi, Mojtaba Mohammadi
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Among different measured observables of top-antitop quark pairs at hadron colliders, the forward-backward asymmetry ($A_{\text{FB}}$) measured by the CDF and D0 collaborations has inconsistency with the Standard Model prediction. The measured forward-backward asymmetry grows with $t\bar{t}$ invariant mass. Several new physics models have been proposed to explain this deviation. We consider the consistency of the parameter space of vector unparticle (in Flavor-Conserving scenario) with the existing $t\bar{t}$ production measurements. In particular, we look at the total cross sections at the LHC and Tevatron, differential cross section with $t\bar{t}$ invariant mass, and the LHC charge asymmetry to identify the regions in parameter space that can give the desired top $A_{\text{FB}}$ observed by the Tevatron. We show that in spite of the intrinsic tension between the LHC charge asymmetry and $A_{\text{FB}}$, there exists a region in the unparticle parameters space where the top $A_{\text{FB}}$ and the LHC charge asymmetry are satisfied simultaneously. Finally, we show that the consistent region with $t\bar{t}$ observables is consistent with the constraints coming from the dijet resonance searches.
description: 12 pages,5 figures
title: The challenges of applying principles of relational practice in child friendly spaces in humanitarian emergencies
Creators: name: Alan, Paul Lee
name: Sezikeye, David K.
Publisher: name: Strathprints - University of Strathclyde
Year: 2016

description: Witnessing violence, death, destruction of social fibre and disruption of daily routine negatively affects children’s normal development and robs them of their childhood (Save the Children 2008; IASC, Global Protection Cluster, INEE & Education cluster, 2011). In order to address the effects of humanitarian disasters, child protection organisations set up child friendly spaces (sometimes referred to as CFS) to address the psychosocial needs of children and youth. Child friendly spaces provide young people with a safe place to play, socialise and develop a sense of normalcy and recovery. This paper attempts to integrate the concept of relational practice into child friendly spaces, demonstrating why lack of relational practice in child friendly spaces in emergencies may affect the process of psychosocial recovery and impact on children’s developmental outcomes. It also discusses some of the structural limitations within the humanitarian sector that may affect the adaptation of a therapeutic relational approach in child friendly spaces during an emergency.
Interacting dark fluid in the universe bounded by event horizon : A non-equilibrium prescription
Creators: name: Chakraborty, Subenoy
name: Biswas, Atreyee
Publisher: name: arXiv
Year: 2012
Subjects: subject: General Physics (physics.gen-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: A non-equilibrium thermodynamic analysis has been done for the interacting dark fluid in the universe bounded by the event horizon.From observational evidences it is assumed that at present the matter in the universe is dominated by two dark sectors-dark matter and dark energy. The mutual interaction among them results in spontaneous heat flow between the horizon and the fluid system and the thermal equilibrium will no longer hold.In the present work,the dark matter is chosen in the form of dust while the dark energy is chosen as a perfect fluid with constant equation in one case and holographic dark energy model is chosen in the other.Finally,validity of the generalized second law of thermodynamics has been examined in both cases.
description: 14 pages,2figure. Accepted in General Relativity and Gravitation
Finding new signature effects on galactic dynamics to constrain Bose-Einstein-condensed cold dark matter
Creators: name: Rindler-Daller, Tanja
name: Shapiro, Paul R.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Quantum Gases (cond-mat.quant-gas)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: If cosmological cold dark matter (CDM) consists of light enough bosonic particles that their phase-space density exceeds unity, they will comprise a Bose-Einstein condensate (BEC). The nature of this BEC-CDM as a quantum fluid may then distinguish it dynamically from the standard form of CDM involving a collisionless gas of non-relativistic particles that interact purely gravitationally. We summarize some of the dynamical properties of BEC-CDM that may lead to observable signatures in galactic halos and present some of the bounds on particle mass and self-interaction coupling strength that result from a comparison with observed galaxies.
description: 10 pages, 5 figures; Minor corrections to reflect the published version
Christopher Scull, Early medieval (late 5th-early 8th centuries AD) cemeteries at Boss Hall and Buttermarket, Ipswich, Suffolk
Creators: name: Härke, Heinrich
Publisher: name: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts
Year: 2019

description: Rezension zu: Christopher Scull, Early medieval (late 5th-early 8th centuries AD) cemeteries at Boss Hall and Buttermarket, Ipswich, Suffolk. The Society for Medieval Archaeology Monograph 27. Society for Medieval Archaeology, London 2009. ISBN 978-1-906540-18-0. 351 Seiten mit 201 Abbildungen und 12 Tafeln
description: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts, Bd. 89 2011(2013)
Emergent Phases of Nodeless and Nodal Superconductivity Separated by Antiferromagnetic Order in Iron-based Superconductor (Ca4Al2O6)Fe2(As1-xPx)2: 75As- and 31P-NMR Studies
Creators: name: Kinouchi, H.
name: Mukuda, H.
name: Kitaoka, Y.
name: Shirage, P. M.
name: Fujikura, H.
name: Gotoh, Y.
name: Eisaki, H.
name: Iyo, A.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We report $^{31}$P- and $^{75}$As-NMR studies on (Ca$_4$Al$_2$O$_{6}$)Fe$_2$(As$_{1-x}$P$_x$)$_2$ with an isovalent substitution of P for As. We present the novel evolution of emergent phases that the nodeless superconductivity (SC) in 0$\le x \le$0.4 and the nodal one around $x$=1 are intimately separated by the onset of a commensurate stripe-type antiferromagnetic (AFM) order in 0.5$\le x \le$ 0.95, as an isovalent substitution of P for As decreases a pnictogen height $h_{Pn}$ measured from the Fe plane. It is demonstrated that the AFM order takes place under a condition of 1.32Å$\le h_{Pn} \le$1.42Å, which is also the case for other Fe-pnictides with the Fe$^{2+}$ state in (Fe$Pn$)$^{-}$ layers. This novel phase evolution with the variation in $h_{Pn}$ points to the importance of electron correlation for the emergence of SC as well as AFM order.
description: 5pages, 4figures; accepted for publication as a Rapid Communication in Phys. Rev. B
Finite blocklength converse bounds for quantum channels
Creators: name: Matthews, William
name: Wehner, Stephanie
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We derive upper bounds on the rate of transmission of classical information over quantum channels by block codes with a given blocklength and error probability, for both entanglement-assisted and unassisted codes, in terms of a unifying framework of quantum hypothesis testing with restricted measurements. Our bounds do not depend on any special property of the channel (such as memorylessness) and generalise both a classical converse of Polyanskiy, Poor, and Verdú as well as a quantum converse of Renner and Wang, and have a number of desirable properties. In particular our bound on entanglement-assisted codes is a semidefinite program and for memoryless channels its large blocklength limit is the well known formula for entanglement-assisted capacity due to Bennett, Shor, Smolin and Thapliyal.
description: 15 pages, 4 figures (v2: improved notation; one mistake fixed; results unchanged)
Heike Kennecke, Die slawische Siedlung von Dyrotz, Lkr. Havelland
Creators: name: Wetzel, Günter
Publisher: name: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts
Year: 2019

description: Rezension zu: Heike Kennecke, Die slawische Siedlung von Dyrotz, Lkr. Havelland. Materialien zur Archäologie in Brandenburg Band 1. Verlag Marie Leidorf, Rahden/ Westf. 2008. ISBN 978-3-86757-311-5. 364 Seiten mit 81 Abbildungen, 19 Tabellen, 106 Tafeln und einer Beilage
description: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts, Bd. 89 2011(2013)
The Lasso for High-Dimensional Regression with a Possible Change-Point
Creators: name: Lee, Sokbae
name: Seo, Myung Hwan
name: Shin, Youngki
Publisher: name: arXiv
Year: 2012
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics
subject: 62H12, 62J05 (Primary) 62J07 (Secondary)

description: We consider a high-dimensional regression model with a possible change-point due to a covariate threshold and develop the Lasso estimator of regression coefficients as well as the threshold parameter. Our Lasso estimator not only selects covariates but also selects a model between linear and threshold regression models. Under a sparsity assumption, we derive non-asymptotic oracle inequalities for both the prediction risk and the $\ell_1$ estimation loss for regression coefficients. Since the Lasso estimator selects variables simultaneously, we show that oracle inequalities can be established without pretesting the existence of the threshold effect. Furthermore, we establish conditions under which the estimation error of the unknown threshold parameter can be bounded by a nearly $n^{-1}$ factor even when the number of regressors can be much larger than the sample size ($n$). We illustrate the usefulness of our proposed estimation method via Monte Carlo simulations and an application to real data.
L^p(R^n)-continuity of translation invariant anisotropic pseudodifferential operators: a necessary condition
Creators: name: Coriasco, S.
name: Murdocca, M.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: Primary 35S05, Secondary 47A05, 47B38, 47G30

description: We consider certain anisotropic translation invariant pseudodifferential operators, belonging to a class denoted by $\mathrm{op}(\mathcal{M}^λ_ψ)$, where $λ$ and $ψ=(ψ_1,\dots,ψ_n)$ are the "order" and "weight" functions, defined on $\mathbb{R}^n$, for the corresponding space of symbols. We prove that the boundedness of a suitable function $F_p\colon\mathbb{R}^n\to[0,+\infty)$, $1
description: 16 pages, mistakes and typos correction
Inhalt
Creators: name: Redaktion, Die
Publisher: name: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Year: 2019

description: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege, Bd. 13 Nr. 11 (1960): Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Dynamic approach to finite-temperature magnetic phase transitions in the extended J1- J2 model with vacancy order
Creators: name: Zhou, N. J.
name: Zheng, B.
name: Dai, J. H.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The recently discovered iron-based superconductors A$_{y}$Fe$_{2-x}$Se$_{2}$ ($A$=K, Rb, Cs, Tl) show a long-range antiferromagnetic order with an unexpected high transition temperature $T_N \sim 550$ K and a unique $\sqrt{5} \times \sqrt{5}$ vacancy order. Taking the extended $J_1$-$J_2$ model as a minimal model, we investigate the finite-temperature magnetic phase transitions in a square lattice with a $\sqrt{5} \times \sqrt{5}$ vacancy superstructure by using large-scale Monte Carlo simulations. By the parallel tempering technique, the block spin checkerboard and stripe antiferromagnetic states are detected to be the groundstates for three representative sets of model parameters. The short-time dynamic approach is applied to accurately determine the critical temperature as well as the static and dynamic exponents. Our results indicate that the dramatic enhancement of the critical temperature as observed in experiments should be mainly due to a combination effect of the vacancy order and the block lattice contraction.
description: 23 pages, accepted for publication
Mitteilungen des Verbandes Deutscher Kunsthistoriker e. V.
Creators: name: Redaktion, Die
Publisher: name: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Year: 2019

description: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege, Bd. 13 Nr. 9 (1960): Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
The role of 245 phase in alkaline iron selenide superconductors revealed by high pressure studies
Creators: name: Gao, Peiwen
name: Yu, Rong
name: Sun, Liling
name: Wang, Hangdong
name: Wang, Zhen
name: Wu, Qi
name: Fang, Minghu
name: Chen, Genfu
name: Guo, Jing
name: Zhang, Chao
name: Gu, Dachun
name: Tian, Huanfang
name: Li, Jianqi
name: Liu, Jing
name: Li, Yanchun
name: Li, Xiaodong
name: Si, Qimiao
name: Zhao, Zhongxian
Publisher: name: arXiv
Year: 2012
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Here we show that a pressure of about 8 GPa suppresses both the vacancy order and the insulating phase, and a further increase of the pressure to about 18 GPa induces a second transition or crossover. No superconductivity has been found in compressed insulating 245 phase. The metallic phase in the intermediate pressure range has a distinct behavior in the transport property, which is also observed in the superconducting sample. We interpret this intermediate metal as an orbital selective Mott phase (OSMP). Our results suggest that the OSMP provides the physical pathway connecting the insulating and superconducting phases of these iron selenide materials.
description: 32 pages, 4 figures
Using Epistemic Emotions to Support Canadian Pre-service Teachers Learning about Classroom Assessment
Creators: Lia M Daniels & Kendra Wells
Publisher: name: University of Alberta Library
Year: 2023

Students feel epistemic emotions like surprise or frustration when they encounter content that conflicts with their beliefs or previous knowledge in a way that can facilitate or hinder learning. Pre-service teachers may find that professional perspectives on assessment conflict with their previous knowledge of assessment, creating epistemic emotions. The purpose of this research was to evaluate how frustration, curiosity, and surprise felt during two learning experiences related to self-reported learning of assessment and application to practice. N=205 pre-service teachers consented for their responses to questions associated with two learning activities to be analyzed. Participants reported experiencing moderate levels of curiosity in both activities, but one garnered more frustration and the other more surprise. Frustration was negatively associated with self-reported learning and application. Whereas, curiosity and surprise had statistically significant positive associations with the outcomes. We discuss the role of epistemic emotions in learning about assessment and offer recommendations for instructors.
Der Boden unter Druck - Abgesenkter Reifeninnendruck begrenzt die Bodenbelastung
Creators: name: Brunotte, Joachim
name: Sommer, Claus
name: Isensee, Edmund
name: Weisskopf, Peter
Publisher: name: LANDTECHNIK
Year: 2005

description: Es liegt im Interesse des Landwirts und wird in Deutschland auch vom Gesetzgeber verlangt, dass Landbewirtschaftung bei der Bodennutzung Vorsorgepflicht zu erfüllen und Gefahrenabwehr zu berücksichtigen hat. Nach §17 BBodSchG gehört die Wahrung der Produktions- (Pflanzenertrag, Kosten), Regelungs- (Gasaustausch, Infiltration) und Lebensraumfunktionen (Bodenorganismen) des Bodens zu den Grundsätzen "guter fachlicher Praxis". Demnach ist Bodenschadverdichtung insbesondere im Unterboden vorzubeugen. Für quantitative Handlungsempfehlungen werden drei unterschiedliche Konzepte diskutiert.
description: LANDTECHNIK, Bd. 60 Nr. 3 (2005)
Holomorphic flexibility properties of compact complex surfaces
Creators: name: Forstneric, Franc
name: Larusson, Finnur
Publisher: name: arXiv
Year: 2012
Subjects: subject: Complex Variables (math.CV)
subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 32E10 (Primary) 14J28, 32E30, 32G05, 32H02, 32J15, 32Q28, 32S45 (Secondary)

description: We introduce the notion of a stratified Oka manifold and prove that such a manifold $X$ is strongly dominable in the sense that for every $x\in X$, there is a holomorphic map $f:\C^n\to X$, $n=\dim X$, such that $f(0)=x$ and $f$ is a local biholomorphism at 0. We deduce that every Kummer surface is strongly dominable. We determine which minimal compact complex surfaces of class VII are Oka, assuming the global spherical shell conjecture. We deduce that the Oka property and several weaker holomorphic flexibility properties are in general not closed in families of compact complex manifolds. Finally, we consider the behaviour of the Oka property under blowing up and blowing down.
description: Version 2: Theorem 11 reformulated and its proof corrected. Minor improvements to the exposition. Version 3: A few minor improvements. To appear in International Mathematics Research Notices
Untersuchung zweier Grabhügel in der Feldmark Etelsen, Kr. Verden
Creators: name: Laux, Friedrich
Publisher: name: Nachrichten aus Niedersachsens Urgeschichte
Year: 2019

description: Nachrichten aus Niedersachsens Urgeschichte, Bd. 34 (1965): Nachrichten aus Niedersachsens Urgeschichte
Distribution of the largest eigenvalue for real Wishart and Gaussian random matrices and a simple approximation for the Tracy-Widom distribution
Creators: name: Chiani, Marco
Publisher: name: arXiv
Year: 2012
Subjects: subject: Information Theory (cs.IT)
subject: Statistics Theory (math.ST)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: We derive efficient recursive formulas giving the exact distribution of the largest eigenvalue for finite dimensional real Wishart matrices and for the Gaussian Orthogonal Ensemble (GOE). In comparing the exact distribution with the limiting distribution of large random matrices, we also found that the Tracy-Widom law can be approximated by a properly scaled and shifted Gamma distribution, with great accuracy for the values of common interest in statistical applications.
description: Journal of Multivariate Analysis (2014)
TRAJTIMI I PROBLEMIT TË TREGTARIT SHËTITËS APLIKUAR NËPËRMJET NJË SHEMBULLI PËR LARGESAT E QYTETEVE SHQIPTARE
Creators: name: BACI, Nevila
name: MILLO, Denisa
Publisher: name: Zenodo
Year: 2023

description: The Traveling Salesman Problem remains still one of the problems of the NP, non-polynomial community, and yet it is very difficult to be applied. The solution to this problem has practical applications in several areas. This was the reason we used it in our specific case to understand better this algorithm. But, nevertheless, literature evidence that there is a need for an efficient solution to this Hard NP problem or refered as the difficult non-polynomial problem. Some approaches have been used to find time-efficient solutions to the problem. In this topic we refer to some deterministic and non-deterministic efforts. We also introduce a greedy nondeterministic algorithm from literature review as a solution that complies with the mos used cases and with our case, in specific. The Traveling Salesman Problem is also analyzed in relation to the Hamiltonian cycle problem, to show the quality of the reducability between the two problems and the advantages the latter brings to the Traveling Salesman Problem (TSP) solution. The paper also gives the definitons of different TSP-s. The example presented in the paper shows that the use of symmetric TSP gave a satisfactory solution with 83.5% reliability and approached the exponential graphical form, as the theory underlined above. Examples of using TSP are numerous. Artificial Intelligence is experiencing significant development utilizing TSP. In other works, this will be our goal. How to improve a TSP algorithm used in one of the areas of Artificial Intelligence, e.g., neural networks. Keywords: Traveling Salesman Problem, NP, Hard NP, Greedy Algorithm, Hamiltionian cycle, Artificial Inttelligence, city distances.
Open Access Und Offene Datenpublikation
Creators: name: Neumann, Janna
name: Tullney, Marco
Publisher: name: Zenodo
Year: 2015
Subjects: openaccess
opendata
research data
forschungsdaten

description: Präsentation vom 18. Februar 2015, gehalten im Rahmen der Open Video Lectures “CoScience – Gemeinsam forschen und publizieren mit dem Netz” des Open Science Lab der TIB.

Inhalte: Open Access – Freie Lizenzen – Open Access bei Textpublikationen – Offene Datenpublikation – Anregungen
description: {"references": ["Tullney, Marco; (2014): Open Access. http://doi.org/10.2314/COSCV1.51", "Tullney, Marco; Neumann, Janna; (2014): Freie Lizenzen und Nachnutzung. http://doi.org/10.2314/COSCV1.52\u2022", "Pampel, Heinz; Neumann, Janna; (2014): Publikation von Forschungsdaten. http://doi.org/10.2314/COSCV1.53"]}
Role of osmotic and hydrostatic pressures in bacteriophage genome ejection
Creators: name: Lemay, Serge G.
name: Panja, Debabrata
name: Molineux, Ian J.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Biological Physics (physics.bio-ph)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Biomolecules (q-bio.BM)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: A critical step in the bacteriophage life cycle is genome ejection into host bacteria. The ejection process for double-stranded DNA phages has been studied thoroughly \textit{in vitro}, where after triggering with the cellular receptor the genome ejects into a buffer. The experimental data have been interpreted in terms of the decrease in free energy of the densely packed DNA associated with genome ejection. Here we detail a simple model of genome ejection in terms of the hydrostatic and osmotic pressures inside the phage, a bacterium, and a buffer solution/culture medium. We argue that the hydrodynamic flow associated with the water movement from the buffer solution into the phage capsid and further drainage into the bacterial cytoplasm, driven by the osmotic gradient between the bacterial cytoplasm and culture medium, provides an alternative mechanism for phage genome ejection \textit{in vivo}; the mechanism is perfectly consistent with phage genome ejection \textit{in vitro}.
description: 5 pages, 2 figures, references updated
Notgrabung eines bronzezeitlichen Grabhügels bei Osterheeslingen, Gern. Heeslingen, Kr. Bremervörde
Creators: name: Laux, Friedrich
Publisher: name: Nachrichten aus Niedersachsens Urgeschichte
Year: 2019

description: Nachrichten aus Niedersachsens Urgeschichte, Bd. 34 (1965): Nachrichten aus Niedersachsens Urgeschichte
A Direct Version of Veldman's Proof of Open Induction on Cantor Space via Delimited Control Operators
Creators: name: Ilik, Danko
name: Nakata, Keiko
Publisher: name: arXiv
Year: 2012
Subjects: subject: Logic (math.LO)
subject: Logic in Computer Science (cs.LO)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: F.4.1; F.3.3

description: First, we reconstruct Wim Veldman's result that Open Induction on Cantor space can be derived from Double-negation Shift and Markov's Principle. In doing this, we notice that one has to use a countable choice axiom in the proof and that Markov's Principle is replaceable by slightly strengthening the Double-negation Shift schema. We show that this strengthened version of Double-negation Shift can nonetheless be derived in a constructive intermediate logic based on delimited control operators, extended with axioms for higher-type Heyting Arithmetic. We formalize the argument and thus obtain a proof term that directly derives Open Induction on Cantor space by the shift and reset delimited control operators of Danvy and Filinski.
Ein spätbronzezeitlicher Urnenfriedhof bei Gerkenhof, Gern. Schafwinkel, Kr. Verden
Creators: name: Schünemann, Detlef
Publisher: name: Nachrichten aus Niedersachsens Urgeschichte
Year: 2019

description: Nachrichten aus Niedersachsens Urgeschichte, Bd. 34 (1965): Nachrichten aus Niedersachsens Urgeschichte
Vorbericht über die Untersuchung einer spätbronzezeitlichen bis früheisenzeitlichen Siedlungsstelle in Vahlde, Kr. Rotenburg/Wümme
Creators: name: Dehnke, Rudolf
Publisher: name: Nachrichten aus Niedersachsens Urgeschichte
Year: 2019

description: Nachrichten aus Niedersachsens Urgeschichte, Bd. 34 (1965): Nachrichten aus Niedersachsens Urgeschichte
Maladera nagporeana
Creators: name: Gupta, Devanshu
name: Bhunia, Debika
name: Ahrens, Dirk
name: Chandra, Kailash
Publisher: name: Zenodo
Year: 2025
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Scarabaeidae
Maladera
Maladera nagporeana

description: Maladera nagporeana (Brenske, 1899)
Material examined. 3 ♂♂, 2 ♀♀ “ Nepal, P: Karnali /D: Mugu, 31km N Jumla Gamghadi, N, Mugu Karnali river, 29°33'32"N, 82°09'30"E, 27.VI.2022, 1740m, light trap, leg. A. Weigel, #22-18” (NME).
description: Published as part of Gupta, Devanshu, Bhunia, Debika, Ahrens, Dirk & Chandra, Kailash, 2025, New species and records of Sericinae from India and Nepal (Coleoptera: Scarabaeidae), pp. 371-385 in Zootaxa 5613 (2) on page 382, DOI: 10.11646/zootaxa.5613.2.11, http://zenodo.org/record/15216371
Dp-minimality: invariant types and dp-rank
Creators: name: Simon, Pierre
Publisher: name: arXiv
Year: 2012
Subjects: subject: Logic (math.LO)
subject: FOS: Mathematics
subject: 03C45

description: This paper has two parts. In the first one, we prove that an invariant dp-minimal type is either finitely satisfiable or definable. We also prove that a definable version of the (p,q)-theorem holds in dp-minimal theories of small or medium directionality. In the second part, we study dp-rank in dp-minimal theories and show that it enjoys many nice properties. It is continuous, definable in families and it can be characterised geometrically with no mention of indiscernible sequences. In particular, if the structure expands a divisible ordered abelian group, then dp-rank coincides with the dimension coming from the order.
description: New section added on dp-rank and the appendix with Sergei Starchenko is now a separate paper
Eine früheisenzeitliche Wohngrube in Neumühlen, Gemarkung Scharnhorst, Kr. Verden
Creators: name: Schünemann, Detlef
Publisher: name: Nachrichten aus Niedersachsens Urgeschichte
Year: 2019

description: Nachrichten aus Niedersachsens Urgeschichte, Bd. 34 (1965): Nachrichten aus Niedersachsens Urgeschichte
Short Text Categorization using World Knowledge
Creators: name: Türker, Rima
Publisher: name: Karlsruher Institut für Technologie (KIT)
Year: 2021

description: The content of the World Wide Web is drastically multiplying, and thus the amount of available online text data is increasing every day. Today, many users contribute to this massive global network via online platforms by sharing information in the form of a short text. Such an immense amount of data covers subjects from all the existing domains (e.g., Sports, Economy, Biology, etc.). Further, manually processing such data is beyond human capabilities. As a result, Natural Language Processing (NLP) tasks, which aim to automatically analyze and process natural language documents have gained significant attention. Among these tasks, due to its application in various domains, text categorization has become one of the most fundamental and crucial tasks. However, the standard text categorization models face major challenges while performing short text categorization, due to the unique characteristics of short texts, i.e., insufficient text length, sparsity, ambiguity, etc. In other words, the conventional approaches provide substandard performance, when they are directly applied to the short text categorization task. Furthermore, in the case of short text, the standard feature extraction techniques such as bag-of-words suffer from limited contextual information. Hence, it is essential to enhance the text representations with an external knowledge source. Moreover, the traditional models require a significant amount of manually labeled data and obtaining labeled data is a costly and time-consuming task. Therefore, although recently proposed supervised methods, especially, deep neural network approaches have demonstrated notable performance, the requirement of the labeled data remains the main bottleneck of these approaches. In this thesis, we investigate the main research question of how to perform \textit{short text categorization} effectively \textit{without requiring any labeled data} using knowledge bases as an external source. In this regard, novel short text categorization models, namely, Knowledge-Based Short Text Categorization (KBSTC) and Weakly Supervised Short Text Categorization using World Knowledge (WESSTEC) have been introduced and evaluated in this thesis. The models do not require any hand-labeled data to perform short text categorization, instead, they leverage the semantic similarity between the short texts and the predefined categories. To quantify such semantic similarity, the low dimensional representation of entities and categories have been learned by exploiting a large knowledge base. To achieve that a novel entity and category embedding model has also been proposed in this thesis. The extensive experiments have been conducted to assess the performance of the proposed short text categorization models and the embedding model on several standard benchmark datasets.
Covers of Elliptic Curves with Unique, Totally Ramified Branch Points
Creators: name: Rubinstein-Salzedo, Simon
Publisher: name: arXiv
Year: 2012
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14Q05

description: A well-known and difficult problem in computational number theory and algebraic geometry is to write down equations for branched covers of algebraic curves with specified monodromy type. In this article, we present a technique for computing such covers in the case of totally ramified covers of elliptic curves branched at one point.
description: 9 pages, 5 figures
Topological blockade and measurement of topological charge
Creators: name: van Heck, B.
name: Burrello, M.
name: Yacoby, A.
name: Akhmerov, A. R.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The fractionally charged quasiparticles appearing in the 5/2 fractional quantum Hall plateau are predicted to have an extra non-local degree of freedom, known as topological charge. We show how this topological charge can block the tunnelling of these particles, and how such 'topological blockade' can be used to readout their topological charge. We argue that the short time scale required for this measurement is favorable for the detection of the non-Abelian anyonic statistics of the quasiparticles. We also show how topological blockade can be used to measure braiding statistics, and to couple a topological qubit with a conventional one.
description: Published version: one additional paragraph (on the 331 state); Figs. 1 and 4 modified; Ref. 46 added
Role of the non-locality of the vector potential in the Aharonov-Bohm effect
Creators: name: Stewart, A. M.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: When the electromagnetic potentials are expressed in the Coulomb gauge in terms of the electric and magnetic fields rather than the sources responsible for these fields they have a simple form that is non-local i.e. the potentials depend on the fields at every point in space. It is this non-locality of classical electrodynamics that is at first instance responsible for the puzzle associated with the Aharonov-Bohm effect: that its interference pattern is affected by fields in a region of space that the electron beam never enters.
description: v5. 12 pages, 1 Figure pdf. Two appendices added
Period Computations for Covers of Elliptic Curves
Creators: name: Rubinstein-Salzedo, Simon
Publisher: name: arXiv
Year: 2012
Subjects: subject: Number Theory (math.NT)
subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 11G32, 11J70, 14H30, 14H52, 14Q05

description: In this article, we construct algebraic equations for a curve C and a map f to an elliptic curve E, with pre-specified branching data. We do this by determining certain relations that the periods of C and E must satisfy and use these relations to approximate the coefficients to high precision. We then conjecture which algebraic numbers the coefficients are, and then we prove this conjecture to be correct.
description: 13 pages, 7 figures
Frühmittelalterliches Gräberfeld Zetel
Creators: name: Marschalleck, Karl-Heinz
Publisher: name: Nachrichten aus Niedersachsens Urgeschichte
Year: 2019

description: Nachrichten aus Niedersachsens Urgeschichte, Bd. 34 (1965): Nachrichten aus Niedersachsens Urgeschichte
Ostfriesland: Kirche zu Hage, Kr. Norden
Creators: name: Marschalleck, Karl-Heinz
Publisher: name: Nachrichten aus Niedersachsens Urgeschichte
Year: 2019

description: Nachrichten aus Niedersachsens Urgeschichte, Bd. 34 (1965): Nachrichten aus Niedersachsens Urgeschichte
Two-loop effective potential for the Wess-Zumino model in 2+1 dimensions
Creators: name: Maluf, R. V.
name: da Silva, A. J.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: By using superfield techniques, the effective potential of the $\mathcal{N}=1$ Wess-Zumino model in 2+1 dimensions is computed off-shell up to two loops. It is shown that supersymmetry is not dynamically broken, and that dynamical generation of mass does not occur perturbatively. We also investigate the renormalization of the effective potential and determine the renormalization group gamma and beta functions, showing that this model is infrared free. Comparison with some other results in the literature is provided.
description: 20 pages, 1 figure, substantial changes to text, final version published in Phys. Rev. D
Buchrezension: Kraft/Redenius-Hövermann, Umwandlungsrecht
Creators: name: Haupt, Tino
Publisher: name: Studentische Zeitschrift für Rechtswissenschaft Heidelberg – Wissenschaft Online
Year: 2019

description: Rezension des Lehrbuchs „Umwandlungsrecht“, herausgegeben von Julia Kraft und Julia Redenius-Hövermann, 2015, erschienen im Mohr Siebeck Verlag, Tübingen, XII, 410 Seiten, 34,00 €.
description: Studentische Zeitschrift für Rechtswissenschaft Heidelberg – Wissenschaft Online, Nr. 1 (2019): StudZR-WissOn