cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The Linearized 2D Inviscid Shallow Water Equations in a Rectangle: Boundary Conditions and Well-Posedness
Creators: name: Huang, Aimin
name: Temam, Roger
Publisher: name: arXiv
Year: 2012
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: We consider the linearized 2D inviscid shallow water equations in a rectangle. A set of boundary conditions is proposed which make these equations well-posed. Several different cases occur depending on the relative values of the reference velocities $(u_0,v_0)$ and reference height $ϕ_0$ (sub- or super-critical flow at each part of the boundary).
description: 33 pages
Quasipolynomial-time Identity Testing of Non-Commutative and Read-Once Oblivious Algebraic Branching Programs
Creators: name: Forbes, Michael A.
name: Shpilka, Amir
Publisher: name: arXiv
Year: 2012
Subjects: subject: Computational Complexity (cs.CC)
subject: FOS: Computer and information sciences

description: We study the problem of obtaining deterministic black-box polynomial identity testing algorithms (PIT) for algebraic branching programs (ABPs) that are read-once and oblivious. This class has an deterministic white-box polynomial identity testing algorithm (due to Raz and Shpilka), but prior to this work there was no known such black-box algorithm. The main result of this work gives the first quasi-polynomial sized hitting sets for size S circuits from this class, when the order of the variables is known. As our hitting set is of size exp(lg^2 S), this is analogous (in the terminology of boolean pseudorandomness) to a seed-length of lg^2 S, which is the seed length of the pseudorandom generators of Nisan and Impagliazzo-Nisan-Wigderson for read-once oblivious boolean branching programs. Our results are stronger for branching programs of bounded width, where we give a hitting set of size exp(lg^2 S/lglg S), corresponding to a seed length of lg^2 S/lglg S. This is in stark contrast to the known results for read-once oblivious boolean branching programs of bounded width, where no pseudorandom generator (or hitting set) with seed length o(lg^2 S) is known. In follow up work, we strengthened a result of Mulmuley, and showed that derandomizing a particular case of the Noether Normalization Lemma is reducible to black-box PIT of read-once oblivious ABPs. Using the results of the present work, this gives a derandomization of Noether Normalization in that case, which Mulmuley conjectured would difficult due to its relations to problems in algebraic geometry. We also show that several other circuit classes can be black-box reduced to read-once oblivious ABPs, including set-multilinear ABPs (a generalization of depth-3 set-multilinear formulas), non-commutative ABPs (generalizing non-commutative formulas), and (semi-)diagonal depth-4 circuits (as introduced by Saxena).
description: 35 pages; v2 updated with improvements for the bounded-width case, results for polynomials of low evaluation dimension, and applications to Noether Normalization
Noise Spectroscopy Using Correlations of Single-Shot Qubit Readout
Creators: name: Fink, Thomas
name: Bluhm, Hendrik
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: A better understanding of the noise causing qubit decoherence is crucial for improving qubit performance. The noise spectrum affecting the qubit may be extracted by measuring dephasing under the application of pulse sequences but requires accurate qubit control and sufficiently long relaxation times, which are not always available. Here, we describe an alternative method to extract the spectrum from correlations of single-shot measurement outcomes of successive free induction decays. This method only requires qubit initialization and readout with a moderate fidelity and also allows independent tuning of both the overall sensitivity and the frequency region over which it is sensitive. Thus, it is possible to maintain a good detection contrast over a very wide frequency range. We discuss using our method for measuring both $1/f$ noise and the fluctuation spectrum of the nuclear bath of GaAs spin qubits.
description: 5 pages, 3 figures
Patricia Phillips (Hrsg.), The Archaeologist and the Laboratory
Creators: name: Eggert, Gerhard
Publisher: name: Bonner Jahrbücher
Year: 2019

description: Rezension zu: Patricia Phillips (Hrsg.), The Archaeologist and the Laboratory. Council for British Archaeology Research Report 58, London 1985. 70 Seiten mit 25 Abbildungen im Text und 55 Farbfotos auf Mikrofiche.
description: Bonner Jahrbücher, Bd. 189.1989: Bonner Jahrbücher
Strange and nonstrange sea quark-gluon effects in nucleons
Creators: name: Batra, M.
name: Upadhyay, A.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Probabilities of various Fock states with strange and nonstrange quark-gluon sea contents are calculated to probe the hadronic structure. Particularly for nucleon, we find various contributions to the low energy properties from scalar, vector and tensor sea in addition to three valence quarks. We focus on the importance of individual sea contributions to the low energy parameters of nucleon by taking the strange and non strange quark-gluon content to the hadron sea. We confirm that the extended Fock space wavefunction is capable of explaining the experimental results where vector sea plays a crucial role in studying hadronic structure while scalar and tensor sea appears to be less dominating due to quark-spin flip process but cannot be neglected. Some of the properties like spin distribution and gA/gV ratio seem to be the most affected by the change in the statistically determined coefficients. Detailed analysis includes different approximations within the statistical approach to test the validity of the model chosen. Phenomenological implication of such sea affecting these properties is also discussed and the results are compared with the experiments.
description: 11 Pages, No figures, Nuclear Physics A(Accepted)
Johann Gustav Droysen, Geschichte des Hellenismus
Creators: name: Zachariadou, Panagiota
Publisher: name: Bonner Jahrbücher
Year: 2019

description: Rezension zu: Johann Gustav Droysen, Geschichte des Hellenismus 1. Geschichte Alexanders des Großen. Ins Neugriechische übertragen von Renos, Hirkos und Stantis Apostolidis. Trapeza Pisteos, Athen 1988. 837 Seiten.
description: Bonner Jahrbücher, Bd. 189.1989: Bonner Jahrbücher
Doris Pinkwart und Wolf Stammnitz, Altertümer von Pergamon XIV
Creators: name: Kreeb, Martin
Publisher: name: Bonner Jahrbücher
Year: 2019

description: Rezension zu: Doris Pinkwart und Wolf Stammnitz, Altertümer von Pergamon XIV. Peristylhäuser westlich der unteren Agora. Unter Mitarbeit von Christof Boehringer, Virginia Grace, Margret Honroth, Ulrich Rombock, Friedrich Skjold Müller und Eva Töpperwein. Verlag Walter de Gruyter, Berlin 1984. XI, 168 Seiten, 59 Tafeln (davon 4 farbige), 25 Abbildungen.
description: Bonner Jahrbücher, Bd. 189.1989: Bonner Jahrbücher
Symmetries of Lévy processes on compact quantum groups, their Markov semigroups and potential theory
Creators: name: Cipriani, Fabio
name: Franz, Uwe
name: Kula, Anna
Publisher: name: arXiv
Year: 2012
Subjects: subject: Operator Algebras (math.OA)
subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 20G42, 43A05, 46L57, 60G51, 81R50

description: Strongly continuous semigroups of unital completely positive maps (i.e. quantum Markov semigroups or quantum dynamical semigroups) on compact quantum groups are studied. We show that quantum Markov semigroups on the universal or reduced C${}^*$-algebra of a compact quantum group which are translation invariant (w.r.t. to the coproduct) are in one-to-one correspondence with Lévy processes on its $*$-Hopf algebra. We use the theory of Lévy processes on involutive bialgebras to characterize symmetry properties of the associated quantum Markov semigroup. It turns out that the quantum Markov semigroup is GNS-symmetric (resp. KMS-symmetric) if and only if the generating functional of the Lévy process is invariant under the antipode (resp. the unitary antipode). Furthermore, we study Lévy processes whose marginal states are invariant under the adjoint action. In particular, we give a complete description of generating functionals on the free orthogonal quantum group $O_n^+$ that are invariant under the adjoint action. Finally, some aspects of the potential theory are investigated. We describe how the Dirichlet form and a derivation can be recovered from a quantum Markov semigroup and its Lévy process and we show how, under the assumption of GNS-symmetry and using the associated Schürmann triple, this gives rise to spectral triples. We discuss in details how the above results apply to compact groups, group C$^*$-algebras of countable discrete groups, free orthogonal quantum groups $O_n^+$ and the twisted $SU_q (2)$ quantum group.
description: 54 pages, thoroughly revised, to appear in the Journal of Functional Analysis
Hanz Günter Martin, Römische Tempelkultbilder
Creators: name: Gabelmann, Hanns
Publisher: name: Bonner Jahrbücher
Year: 2019

description: Rezension zu: Hanz Günter Martin, Römische Tempelkultbilder. Eine archäologische Untersuchung zur späten Republik. Studi e materiali del Museo della Civiltà Romana 12. L’Erma di Bretschneider, Rom 1987. 271 Seiten, 44 Tafeln, 48 Abbildungen.
description: Bonner Jahrbücher, Bd. 189.1989: Bonner Jahrbücher
Friederike Sinn, Stadtrömische Marmorurnen
Creators: name: Koch, Guntram
Publisher: name: Bonner Jahrbücher
Year: 2019

description: Rezension zu: Friederike Sinn, Stadtrömische Marmorurnen. Beiträge zur Erschließung hellenistischer und kaiserzeitlicher Skulptur und Architektur 8. Verlag Philipp von Zabern, Mainz 1987. X, 321 Seiten, 104 Tafeln mit 519 Abbildungen.
description: Bonner Jahrbücher, Bd. 189.1989: Bonner Jahrbücher
Leo Mildenberg, The Coinage of the Bar Kokhba War
Creators: name: Zedelius, Volker
Publisher: name: Bonner Jahrbücher
Year: 2019

description: Rezension zu: Leo Mildenberg, The Coinage of the Bar Kokhba War. Typos, Monographien zur antiken Numismatik 6. Verlag Sauerländer, Aarau / Frankfurt a. M. / Salzburg 1984. 396 Seiten, 44 Tafeln, 17 Textabbildungen und 3 Karten.
description: Bonner Jahrbücher, Bd. 189.1989: Bonner Jahrbücher
Jost Bürgi und Radana Hoppe, Schleitheim-Iuliomagus
Creators: name: Heinz, Werner
Publisher: name: Bonner Jahrbücher
Year: 2019

description: Rezension zu: Jost Bürgi und Radana Hoppe, Schleitheim-Iuliomagus. Die römischen Thermen. Mit Beiträgen von H. Lieb, D. Markert und K. Wyprächtiger. Antiqua 13. Verlag Schweizerische Gesellschaft für Ur- und Frühgeschichte, Basel 1985. 74 Seiten mit 71 Abbildungen, 3 Falttafeln im Anhang.
description: Bonner Jahrbücher, Bd. 189.1989: Bonner Jahrbücher
Walking techni-pions at LHC
Creators: name: Jia, Junji
name: Matsuzaki, Shinya
name: Yamawaki, Koichi
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We calculate techni-pion masses of the walking technicolor (WTC), by explicitly evaluating nontrivial contributions from various possible chiral breaking sources in a concrete WTC setting of the one-family model. Our explicit computation of the mass and the coupling in this concrete model setting reveals that the techni-pions are on the order of several hundred GeV in the region to be discovered at LHC.
description: 17 pages, 8 eps figures, latex; typos corrected
Odd type generalized complex structures on 4-manifolds
Creators: name: Chen, Haojie
name: Nie, Xiaolan
Publisher: name: arXiv
Year: 2012
Subjects: subject: Differential Geometry (math.DG)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: We prove that a compact smooth 4-manifold admits generalized complex structures of odd type if and only if it has a transversely holomorphic 2-foliation. Consequently, there exist generalized complex structures of odd type on a circle bundle over a closed Seifert fibered 3-manifold.
description: 18 pages; v2: retitled, minor changes
Erika Brödner, Die römischen Thermen und das antike Badewesen
Creators: name: Manderscheid, Hubertus
Publisher: name: Bonner Jahrbücher
Year: 2019

description: Rezension zu: Erika Brödner, Die römischen Thermen und das antike Badewesen. Eine kulturhistorische Betrachtung. 2. Auflage. Wissenschaftliche Buchgesellschaft, Darmstadt 1992. XI, 307 Seiten, 87 Abbildungen im Text, 1 Karte, 80 Tafeln mit 141 Abbildungen
description: Bonner Jahrbücher, Bd. 194.1994 (1995): Bonner Jahrbücher
Jens Nieling, die Einführung der Eisentechnologie in Südkaukasien und Ostanatolien während der Spätbronze- und Früheisenzeit
Creators: name: Metzner-Nebelsick, Carola
Publisher: name: Bonner Jahrbücher
Year: 2019

description: Rezension zu: Jens Nieling, die Einführung der Eisentechnologie in Südkaukasien und Ostanatolien während der Spätbronze- und Früheisenzeit. The Danish national Research Foundation’s Centre for Black sea studies. Aarhus University Press 2009. 363 Seiten mit 46 schwarzweißen Textabbildungen, 11 Tabellen und 153 schwarzweißen Katalogabbildungen sowie 3 Farbtafeln
description: Bonner Jahrbücher, Bd. 210/211.2010/2011(2012): Bonner Jahrbücher
Bayesian Surrogate Analysis and Uncertainty Propagation
Creators: name: Ranftl, Sascha
Publisher: name: Graz University of Technology
Year: 2021

description: Contributed talk at the 40th International Workshop on Bayesian Inference and Maximum Entropy Methods in Science and Engineering (MaxEnt 2021), hosted online by the Institute of Theoretical Physics at Graz University of Technology 04.07.2021-09.07.2021.Windows Media Player may have problems with audio, use e.g. VLC instead
Transport on a Lattice with Dynamical Defects
Creators: name: Turci, Francesco
name: Parmeggiani, Andrea
name: Pitard, Estelle
name: Romano, M. Carmen
name: Ciandrini, Luca
Publisher: name: arXiv
Year: 2012
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Subcellular Processes (q-bio.SC)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: Many transport processes in nature take place on substrates, often considered as unidimensional lanes. These unidimensional substrates are typically non-static: affected by a fluctuating environment, they can undergo conformational changes. This is particularly true in biological cells, where the state of the substrate is often coupled to the active motion of macromolecular complexes, such as motor proteins on microtubules or ribosomes on mRNAs, causing new interesting phenomena. Inspired by biological processes such as protein synthesis by ribosomes and motor protein transport, we introduce the concept of localized dynamical sites coupled to a driven lattice gas dynamics. We investigate the phenomenology of transport in the presence of dynamical defects and find a novel regime characterized by an intermittent current and subject to severe finite-size effects. Our results demonstrate the impact of the regulatory role of the dynamical defects in transport, not only in biology but also in more general contexts.
Convergence of subdiagonal Padé approximations of $C_{0}$-semigroups
Creators: name: Egert, Moritz
name: Rozendaal, Jan
Publisher: name: arXiv
Year: 2012
Subjects: subject: Functional Analysis (math.FA)
subject: Numerical Analysis (math.NA)
subject: Operator Algebras (math.OA)
subject: FOS: Mathematics
subject: Primary 47D06, 41A21, 41A25, Secondary 44A10, 65J08

description: Let $(r_{n})_{n \in \mathbb{N}}$ be the sequence of subdiagonal Padé approximations of the exponential function. We prove that for $-A$ the generator of a uniformly bounded $C_{0}$-semigroup $T$ on a Banach space $X$, the sequence $(r_{n}(-tA))_{n \in\mathbb{N}}$ converges strongly to $T(t)$ on $\textrm{D}(A^α)$ for $α>\frac{1}{2}$. Local uniform convergence in $t$ and explicit convergence rates in $n$ are established. For specific classes of semigroups, such as bounded analytic or exponentially $γ$-stable ones, stronger estimates are proved. Finally, applications to the inversion of the vector-valued Laplace transform are given.
description: 19 pages, updated version. Final version published in Journal of Evolution Equations
An Injectivity Theorem
Creators: name: Ambro, Florin
Publisher: name: arXiv
Year: 2012
Subjects: subject: Algebraic Geometry (math.AG)
subject: Complex Variables (math.CV)
subject: FOS: Mathematics
subject: 14F17, 14E30

description: We generalize the injectivity theorem of Esnault and Viehweg, and apply it to the structure of log canonical type divisors.
description: 24 pages (LaTeX)
Black hole quantum spectrum
Creators: name: Corda, Christian
Publisher: name: arXiv
Year: 2012
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Introducing a black hole (BH) effective temperature, which takes into account both the non-strictly thermal character of Hawking radiation and the countable behavior of emissions of subsequent Hawking quanta, we recently re-analysed BH quasi-normal modes (QNMs) and interpreted them naturally in terms of quantum levels. In this work we improve such an analysis removing some approximations that have been implicitly used in our previous works and obtaining the corrected expressions for the formulas of the horizon's area quantization and the number of quanta of area and hence also for Bekenstein-Hawking entropy, its sub-leading corrections and the number of micro-states, i.e. quantities which are fundamental to realize the underlying quantum gravity theory, like functions of the QNMs quantum "overtone" number n and, in turn, of the BH quantum excited level. An approximation concerning the maximum value of n is also corrected. On the other hand, our previous results were strictly corrected only for scalar and gravitational perturbations. Here we show that the discussion holds also for vector perturbations. The analysis is totally consistent with the general conviction that BHs result in highly excited states representing both the "hydrogen atom" and the "quasi-thermal emission" in quantum gravity. Our BH model is somewhat similar to the semi-classical Bohr's model of the structure of a hydrogen atom. The thermal approximation of previous results in the literature is consistent with the results in this paper. In principle, such results could also have important implications for the BH information paradox.
description: 22 pages, definitive version accepted for publication in European Physical Journal C. The results of arXiv:1205.5251 have been reviewed and refined
Magnetic Properties of Single Transition-Metal Atom Absorbed Graphdiyne and Graphyne Sheet
Creators: name: He, Junjie
name: Ma, ShuangYing
name: Zhou, Pan
name: Zhang, C. X.
name: He, Chaoyu
name: Sun, L. Z.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The electronic and magnetic properties of single 3d transition-metal(TM) atom (V, Cr, Mn, Fe, Co, and Ni) adsorbed graphdiyne (GDY) and graphyne (GY) are systematically studied using first-principles calculations within the density functional framework. We find that the adsorption of TM atom not only efficiently modulates the electronic structures of GDY/GY system, but also introduces excellent magnetic properties, such as half-metal and spin-select half-semiconductor. Such modulation originates from the charge transfer between TM adatom and the GDY/GY sheet as well as the electron redistribution of the TM intra-atomic s, p, and d orbitals. Our results indicate that the TM adsorbed GDY/GY are excellent candidates for spintronics.
description: 8 pages, 7 figures
Preliminary lattice study of $I=0$ $K \overline{K}$ scattering
Creators: name: Fu, Ziwen
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We deliver the realistic ab initio lattice investigations of $K \overline{K}$ scattering. In the Asqtad-improved staggered dynamical fermion formulation, we carefully measure $K\overline{K}$ four-point function in the $I=0$ channel by moving wall sources without gauge fixing, and clearly find an attractive interaction in this channel, which is in agreement with the theoretical predictions. An essential ingredient in our lattice calculation is to properly treat the disconnected diagram. Moreover, we explain the difficulties of these lattice calculations, and discuss the way to improve the statistics. Our lattice investigations are carried out with the MILC $2+1$ gauge configuration at lattice spacing $a \approx 0.15$~fm.
description: Accepted for publication in Commun. Theor. Phys
Reynolds Pressure and Relaxation in a Sheared Granular System
Creators: name: Ren, Jie
name: Dijksman, Joshua A.
name: Behringer, Robert P.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We describe experiments that probe the evolution of shear jammed states, occurring for packing fractions $ϕ_S \leq ϕ\leq ϕ_J$, for frictional granular disks, where above $ϕ_J$ there are no stress-free static states. We use a novel shear apparatus that avoids the formation of inhomogeneities known as shear bands. This fixed $ϕ$ system exhibits coupling between the shear strain, $γ$, and the pressure, $P$, which we characterize by the `Reynolds pressure', and a `Reynolds coefficient', $R(ϕ) = (\partial ^2 P/\partial γ^2)/2$. $R$ depends only on $ϕ$, and diverges as $R \sim (ϕ_c - ϕ)^α$, where $ϕ_c \simeq ϕ_J$, and $α\simeq -3.3$. Under cyclic shear, this system evolves logarithmically slowly towards limit cycle dynamics, which we characterize in terms of pressure relaxation at cycle $n$: $ΔP \simeq -β\ln(n/n_0)$. $β$ depends only on the shear cycle amplitude, suggesting an activated process where $β$ plays a temperature-like role.
description: 4 pages, 4 figures
Recent advances in bibliometric indexes and the PaperRank problem
Creators: name: Amodio, Pierluigi
name: Brugnano, Luigi
Publisher: name: arXiv
Year: 2012
Subjects: subject: Digital Libraries (cs.DL)
subject: Numerical Analysis (math.NA)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics
subject: 65F15

description: Bibliometric indexes are customary used in evaluating the impact of scientific research, even though it is very well known that in different research areas they may range in very different intervals. Sometimes, this is evident even within a single given field of investigation making very difficult (and inaccurate) the assessment of scientific papers. On the other hand, the problem can be recast in the same framework which has allowed to efficiently cope with the ordering of web-pages, i.e., to formulate the PageRank of Google. For this reason, we call such problem the PaperRank problem, here solved by using a similar approach to that employed by PageRank. The obtained solution, which is mathematically grounded, will be used to compare the usual heuristics of the number of citations with a new one here proposed. Some numerical tests show that the new heuristics is much more reliable than the currently used ones, based on the bare number of citations. Moreover, we show that our model improves on recently proposed ones.
The space of initial conditions and the property of an almost good reduction in discrete Painleve II equations over finite fields
Creators: name: Kanki, Masataka
name: Mada, Jun
name: Tokihiro, Tetsuji
Publisher: name: arXiv
Year: 2012
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 34M55, 37K10, 37P25

description: Discrete versions of the Painleve equations (dPII and qPII) over finite fields are studied. We first show that they are well defined by extending the domain according to the theory of the space of initial conditions, taking the dPII equation as an example. Then we define them over the field of p-adic numbers and see that they have a property that is similar to the good reduction of dynamical systems modulo a prime. This property is called 'almost good reduction'. We study the q-discrete analogue of the Painleve II equation in this paper, following the method in our previous work (arXiv: 1206.4456), in which the discrete Painleve II equation has been treated. We can consider almost good reduction as an arithmetic analogue of the singularity confinement test. We can also obtain special solutions over finite fields from those defined over fields of characteristic zero. (v2: excluded the review of arXiv: 1206.4456) (v3: several typos are corrected) (v4: final version to appear in J. Nonlin. Math. Phys.)
description: 9 pages, 1 figure
Determinantal point processes for machine learning
Creators: name: Kulesza, Alex
name: Taskar, Ben
Publisher: name: arXiv
Year: 2012
Subjects: subject: Machine Learning (stat.ML)
subject: Information Retrieval (cs.IR)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Determinantal point processes (DPPs) are elegant probabilistic models of repulsion that arise in quantum physics and random matrix theory. In contrast to traditional structured models like Markov random fields, which become intractable and hard to approximate in the presence of negative correlations, DPPs offer efficient and exact algorithms for sampling, marginalization, conditioning, and other inference tasks. We provide a gentle introduction to DPPs, focusing on the intuitions, algorithms, and extensions that are most relevant to the machine learning community, and show how DPPs can be applied to real-world applications like finding diverse sets of high-quality search results, building informative summaries by selecting diverse sentences from documents, modeling non-overlapping human poses in images or video, and automatically building timelines of important news stories.
description: 120 pages
Christiane Schnack, Mittelalterliche Lederfunde aus Schleswig - Futterale, Riemen, Taschen und andere Objekte. Ausgrabung Schild 1971-1975. Ausgrabungen in Schleswig
Creators: name: Fingerlin, Ilse
Publisher: name: Fundberichte aus Baden-Württemberg
Year: 2019

description: Rezension zu: Christiane Schnack, Mittelalterliche Lederfunde aus Schleswig - Futterale, Riemen, Taschen und andere Objekte. Ausgrabung Schild 1971-1975. Ausgrabungen in Schleswig. Berichte und Studien 13. Wachholtz Verlag Neumünster 1998 (ISBN 3-529-01463-X). 103 Seiten, 61 Abbildungen, überwiegend Strichzeichnungen, 3 Fotos.
description: Fundberichte aus Baden-Württemberg, Bd. 23 (1999): Fundberichte aus Baden-Württemberg
Klaus Bingenheimer, Die Luftheizungen des Mittelalters. Zur Typologie und Entwicklung eines technikgeschichtlichen Phänomens
Creators: name: Stelzle-Hüglin, Sophie
Publisher: name: Fundberichte aus Baden-Württemberg
Year: 2019

description: Rezension zu: Klaus Bingenheimer, Die Luftheizungen des Mittelalters. Zur Typologie und Entwicklung eines technikgeschichtlichen Phänomens. Schriftenreihe Antiquitates Bd. 17. Verlag Dr. Kovac Hamburg 1998 (Darmstadt, Techn. Univ., Diss., 1998); 424 Seiten, 97 Abbildungen im Text, 82 Abbildungen im Katalog, 3 Karten. ISBN 3-86064-788-1.
description: Fundberichte aus Baden-Württemberg, Bd. 23 (1999): Fundberichte aus Baden-Württemberg
Random graph products of finite groups are rational duality groups
Creators: name: Davis, Michael W.
name: Kahle, Matthew
Publisher: name: arXiv
Year: 2012
Subjects: subject: Group Theory (math.GR)
subject: Algebraic Topology (math.AT)
subject: Combinatorics (math.CO)
subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 05C10, 05C80, 20F36, 20F55, 20F65, 20J06 (Primary) 57M07 (Secondary)

description: Given an edge-independent random graph G(n,p), we determine various facts about the cohomology of graph products of groups for the graph G(n,p). In particular, the random graph product of a sequence of finite groups is a rational duality group with probability tending to 1 as n goes to infinity. This includes random right angled Coxeter groups as a special case.
description: 29 pages
Miguel-Anxo Murado: Historias peregrinas
Creators: name: Murado, Miguel-Anxo
Publisher: name: HeLix - Dossiers zur romanischen Literaturwissenschaft
Year: 2019

description: -
description: HeLix - Dossiers zur romanischen Literaturwissenschaft, Bd. 12 (2019): Auto sacramental: Aktuelle Forschungsbeiträge zum Fronleichnamsspiel in Spanien und Hispanoamerika
Broadening the scope of weak quantum measurements II: Past and future measurement effects within a double Mach-Zehnder-interferometer setting
Creators: name: Aharonov, Yakir
name: Cohen, Eliahu
name: Elitzur, Avshalom C.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Following earlier applications of weak measurement to new cases (Part I), we proceed to explore its temporal peculiarities. We analyze an idealized experiment in which weak which-path measurements do not prevent consecutive weak interference effects, and then again the which-path information is recovered by strong measurements. We also show how the same effect can be obtained even by all these measurements being carried out on a single particle. The simplified setting enables critically assessing competing interpretations of the results. The most natural one is that of the Two-State-Vector Formalism, according to which the quantum "two-state" between an earlier and a later measurement is equally determined by both of them.
description: 11 pages, 3 figures. Submitted to Physical Review A
Towards the Brauer-Manin obstruction on varieties fibred over the projective line
Creators: name: Liang, Yongqi
Publisher: name: arXiv
Year: 2012
Subjects: subject: Algebraic Geometry (math.AG)
subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11G35 (14G25, 14D10)

description: Recently Dasheng Wei proved that the Brauer-Manin obstruction is the only obstruction to the Hasse principle for 0-cycles of degree 1 on some fibrations over the projective line defined by bi-cyclic normic equations. In the present paper, we prove the exactness of the global-to-local sequence for Chow groups of 0-cycles of such varieties, which signifies that the Brauer-Manin obstruction is also the only obstruction to weak approximation for 0-cycles of arbitrary degree. Our main theorem also generalizes several existing results.
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. 1 (1960): Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Ludwigsburger Porzellan
Creators: name: Köllmann, Erich
Publisher: name: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Year: 2019

description: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege, Bd. 13 Nr. 1 (1960): Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Tafeln
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. 1 (1960): Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Ausstellungskalender
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. 2 (1960): Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
The space $L^2$ on semi-infinite Grassmannian over finite field
Creators: name: Neretin, Yury A.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Representation Theory (math.RT)
subject: Classical Analysis and ODEs (math.CA)
subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 22E65, 20G40, 60B05, 37L40, 33D45, 43A05, 22B99

description: We construct a $GL$-invariant measure on a semi-infinite Grassmannian over a finite field, describe the natural group of symmetries of this measure, and decompose the space $L^2$ over the Grassmannian on irreducible representations. The spectrum is discrete, spherical functions on the Grassmannian are given in terms of the Al Salam--Carlitz orthogonal polynomials. We also construct an invariant measure on the corresponding space of flags.
description: 32pp
Probegrabung auf einer Siedlung der römischen Kaiserzeit im ostniedersächsischen Lößgebiet »Am Hetelberg« bei Gielde, Kr. Goslar
Creators: name: Niquet, Franz
Publisher: name: Nachrichten aus Niedersachsens Urgeschichte
Year: 2019

description: Nachrichten aus Niedersachsens Urgeschichte, Bd. 31 (1962): Nachrichten aus Niedersachsens Urgeschichte
Die Ergebnisse der Grabung Gristede 1960 und 1961
Creators: name: Zoller, Dieter
Publisher: name: Nachrichten aus Niedersachsens Urgeschichte
Year: 2019

description: Nachrichten aus Niedersachsens Urgeschichte, Bd. 31 (1962): Nachrichten aus Niedersachsens Urgeschichte
Ankel, Cornelius: Eine linearbandkeramische Siedlung bei Duderstadt (Südhannover)
Creators: name: Niquet, Franz
Publisher: name: Nachrichten aus Niedersachsens Urgeschichte
Year: 2019

description: Rezension zu: Ankel, Cornelius: Eine linearbandkeramische Siedlung bei Duderstadt (Südhannover). Vorangestellt: K. Tackenberg, Die Untersuchung amEuzenberg bei Duderstadt der Jahre 1952—1954. Veröffentlichungen der urgeschichtlichen Sammlungen des Landesmuseums zu Hannover. Begründet von K. H. Jacob-Friesen. Herausgegeben von W. D. Asmus, Band 16, Hildesheim 1961. 4°, 58 Seit., 43 Abb., 6 Tfn.
description: Nachrichten aus Niedersachsens Urgeschichte, Bd. 31 (1962): Nachrichten aus Niedersachsens Urgeschichte
Bergounioux, F. M., und Götz, J.: Die Religionen der vorgeschichtlichen und primitiven Völker
Creators: name: Narr, Karl J.
Publisher: name: Nachrichten aus Niedersachsens Urgeschichte
Year: 2019

description: Rezension zu: Bergounioux, F. M., und Götz, J.: Die Religionen der vorgeschichtlichen und primitiven Völker. (Der Christ in der Welt. Eine Enzyklopädie. XVII. Reihe: Die nichtchristlichen Religionen, l.Band). Aschaffenburg 1960: Paul Pattloch Verlag. 135 S. in 80
description: Nachrichten aus Niedersachsens Urgeschichte, Bd. 31 (1962): Nachrichten aus Niedersachsens Urgeschichte
Broadening the scope of weak quantum measurements I: A single particle accurately measured yet left superposed
Creators: name: Aharonov, Yakir
name: Cohen, Eliahu
name: Elitzur, Avshalom C.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Weak measurement is unique in enabling measurements of non-commuting operators as well as otherwise-undetectable peculiar phenomena predicted by the Two-State-Vector-Formalism (TSVF). This article, the first in two parts, explores novel applications of weak measurement. We first revisit the basic principles of quantum measurement with the aid of the Michelson interferometer. Weak measurement is then introduced in a simple visualized manner by a specific choice of the reflecting mirror's position and momentum uncertainties. Having introduced the method, we proceed to its refinement for a single particle. We consider a photon going back and forth inside the interferometer, oscillating between a superposed and a localized state, while subjected to alternating strong and weak measurements. This cyclic process enables directly measuring both the photon's position ("which-path") and momentum (interference), without disturbing either. An alternative explanation of this result, not invoking weak values, is thoroughly considered and shown to be at odds with the experimental data. Finally a practical application of this experiment is demonstrated, where a single photon measures the various transmission coefficients of a multiport beam-splitter yet remains superposed. This method is then generalized to measurement of the wave-function itself, performed again on a single particle.
description: 20 pages, 5 figures. Submitted to Physical Review A
Domain Walls in Helical Magnets: Elasticity and Pinning
Creators: name: Nattermann, Thomas
Publisher: name: arXiv
Year: 2012
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Recently completely new types of domain walls (DWs) have been discovered in helical magnets, consisting generically of a regular array of {\it pairs} of magnetic vortex lines \cite{Li+12}. Only for special orientations DWs are free of vortices. In this article we calculate their elastic and pinning properties, using the pitch angle $θ$ as a small parameter. In particular we show that vortex free DWs exhibit long range elasticity which makes them very stiff and suppresses their pinning by impurities. Their roughening transition temperature is of the order of the Néel temperature. DWs including vortices (either by orientation or due to step formation above their roughening transition) show short range elasticity and strong pinning by impurities. These results apply both to centro-symmetric as well as to non-centrosymmetric systems. The application to chiral liquid crystals is briefly discussed.
Spectral Energy Distributions of Type 1 AGN in XMM-COSMOS Survey II - Shape Evolution
Creators: name: Hao, Heng
name: Elvis, Martin
name: Civano, Francesca
name: Zamorani, Gianni
name: Ho, Luis C.
name: Comastri, Andrea
name: Brusa, Marcella
name: Bongiorno, Angela
name: Merloni, Andrea
name: Trump, Jonathan R.
name: Salvato, Mara
name: Impey, Chris D.
name: Koekemoer, Anton M.
name: Lanzuisi, Giorgio
name: Celotti, Annalisa
name: Jahnke, Knud
name: Vignali, Cristian
name: Silverman, John D.
name: Urry, C. Megan
name: Schawinski, Kevin
name: Capak, Peter
Publisher: name: arXiv
Year: 2012
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The mid-infrared to ultraviolet (0.1 -- 10 $μm$) spectral energy distribution (SED) shapes of 407 X-ray-selected radio-quiet type 1 AGN in the wide-field ``Cosmic Evolution Survey" (COSMOS) have been studied for signs of evolution. For a sub-sample of 200 radio-quiet quasars with black hole mass estimates and host galaxy corrections, we studied their mean SEDs as a function of a broad range of redshift, bolometric luminosity, black hole mass and Eddington ratio, and compared them with the Elvis et al. (1994, E94) type 1 AGN mean SED. We found that the mean SEDs in each bin are closely similar to each other, showing no statistical significant evidence of dependence on any of the analyzed parameters. We also measured the SED dispersion as a function of these four parameters, and found no significant dependencies. The dispersion of the XMM-COSMOS SEDs is generally larger than E94 SED dispersion in the ultraviolet, which might be due to the broader ``window function'' for COSMOS quasars, and their X-ray based selection.
description: 17 pages, 11 figures, 7 tables, MNRAS accepted
An Optimal Model Identification For Oscillatory Dynamics With a Stable Limit Cycle
Creators: name: Protas, Bartosz
name: Noack, Bernd R.
name: Morzynski, Marek
Publisher: name: arXiv
Year: 2012
Subjects: subject: Dynamical Systems (math.DS)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 93A30, 65K10, 76D25

description: We propose a general framework for parameter-free identification of a class of dynamical systems. Here, the propagator is approximated in terms of an arbitrary function of the state, in contrast to a polynomial or Galerkin expansion used in traditional approaches. The proposed formulation relies on variational data assimilation using measurement data combined with assumptions on the smoothness of the propagator. This approach is illustrated using a generalized dynamic model describing oscillatory transients from an unstable fixed point to a stable limit cycle and arising in nonlinear stability analysis as an example. This 3-state model comprises an evolution equation for the dominant oscillation and an algebraic manifold for the low- and high-frequency components in an autonomous descriptor system. The proposed optimal model identification technique employs mode amplitudes of the transient vortex shedding in a cylinder wake flow as example measurements. The reconstruction obtained with our technique features distinct and systematic improvements over the well-known mean-field (Landau) model of the Hopf bifurcation. The computational aspect of the identification method is thoroughly validated showing that good reconstructions can also be obtained in the absence of of accurate initial approximations.
description: accepted for publication in "Journal of Nonlinear Science"
Schindler, Reinhard: Die Bodenfunde der Freien und Hansestadt Hamburg
Creators: name: Steffens, Heino-Gert
Publisher: name: Nachrichten aus Niedersachsens Urgeschichte
Year: 2019

description: Rezension zu: Schindler, Reinhard: Die Bodenfunde der Freien und Hansestadt Hamburg (Veröffentlichungen des Museums für Hamburgische Geschichte, Abteilung Bodendenkmalpflege Bd. 1). Hamburg 1960, 404 Seit., 97 Textabb., 101 Bildtafn. und 2 große mehrfarbige Karten
description: Nachrichten aus Niedersachsens Urgeschichte, Bd. 31 (1962): Nachrichten aus Niedersachsens Urgeschichte
How large should whales be?
Creators: name: Clauset, Aaron
Publisher: name: arXiv
Year: 2012
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: Biological Physics (physics.bio-ph)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: The evolution and distribution of species body sizes for terrestrial mammals is well-explained by a macroevolutionary tradeoff between short-term selective advantages and long-term extinction risks from increased species body size, unfolding above the 2g minimum size induced by thermoregulation in air. Here, we consider whether this same tradeoff, formalized as a constrained convection-reaction-diffusion system, can also explain the sizes of fully aquatic mammals, which have not previously been considered. By replacing the terrestrial minimum with a pelagic one, at roughly 7000g, the terrestrial mammal tradeoff model accurately predicts, with no tunable parameters, the observed body masses of all extant cetacean species, including the 175,000,000g Blue Whale. This strong agreement between theory and data suggests that a universal macroevolutionary tradeoff governs body size evolution for all mammals, regardless of their habitat. The dramatic sizes of cetaceans can thus be attributed mainly to the increased convective heat loss is water, which shifts the species size distribution upward and pushes its right tail into ranges inaccessible to terrestrial mammals. Under this macroevolutionary tradeoff, the largest expected species occurs where the rate at which smaller-bodied species move up into large-bodied niches approximately equals the rate at which extinction removes them.
description: 7 pages, 3 figures, 2 data tables
Inferring population histories for ancient genomes using genome-wide genealogies.
Creators: name: Speidel, Leo
name: Cassidy, Lara
name: Davies, Robert W
name: Hellenthal, Garrett
name: Skoglund, Pontus
name: Myers, Simon R
Publisher: name: The Francis Crick Institute
Year: 2021
Subjects: Genetics & Genomics
Infectious Disease
Ecology,Evolution & Ethology

description: Ancient genomes anchor genealogies in directly observed historical genetic variation and contextualise ancestral lineages with archaeological insights into their geography and cultural associations. However, the majority of ancient genomes are of lower coverage and cannot be directly built into genealogies. Here, we present a fast and scalable method, Colate, the first approach for inferring ancestral relationships through time between low-coverage genomes without requiring phasing or imputation. Our approach leverages sharing patterns of mutations dated using a genealogy to infer coalescence rates. For deeply sequenced ancient genomes, we additionally introduce an extension of the Relate algorithm for joint inference of genealogies incorporating such genomes. Application to 278 present-day and 430 ancient DNA samples of > 0.5x mean coverage allows us to identify dynamic population structure and directional gene flow between early farmer and European hunter-gatherer groups. We further show that the previously reported, but still unexplained, increase in the TCC/TTC mutation rate, which is strongest in West Eurasia today, was already present at similar strength and widespread in the Late Glacial Period ∼10k-15k years ago, but is not observed in samples >30k years old. It is strongest in Neolithic farmers, and highly correlated with recent coalescence rates between other genomes and a 10,000-year-old Anatolian hunter-gatherer. This suggests gene-flow among ancient peoples postdating the last glacial maximum as widespread and localises the driver of this mutational signal in both time and geography in that region. Our approach should be widely applicable in future for addressing other evolutionary questions, and in other species.
Stampfuß, Rudolf: Siedlungsfunde der jüngeren Bronze- und älteren Eisenzeit im westlichen Ruhrgebiet
Creators: name: Wegewitz, Willi
Publisher: name: Nachrichten aus Niedersachsens Urgeschichte
Year: 2019

description: Rezension zu: Stampfuß, Rudolf: Siedlungsfunde der jüngeren Bronze- und älteren Eisenzeit im westlichen Ruhrgebiet. Mit 711 Abb. auf 33 Tafn. und 1 Faltkarte. VII. 125 Seit., gr. 8 °. Quellenschriften zur westdeutschen Vor- und Frühgeschichte. Herausgegeben von Rudolf Stampfuß. Band 7. Rudolf Habelt Verlag, Bonn 1959. Kart.
description: Nachrichten aus Niedersachsens Urgeschichte, Bd. 31 (1962): Nachrichten aus Niedersachsens Urgeschichte
Wagner, Friedrich: Denkmäler und Fundstätten der Vorzeit Münchens
Creators: name: Claus, Martin
Publisher: name: Nachrichten aus Niedersachsens Urgeschichte
Year: 2019

description: Rezension zu: Wagner, Friedrich: Denkmäler und Fundstätten der Vorzeit Münchens. Prähistorische Staatssammlung München 1958, 114 Seit., 34Textabb., 12Tafn. und eine mehrfarbige archäologische Karte. Verlag Michael Laßleben, Kallmünz (Opf.)
description: Nachrichten aus Niedersachsens Urgeschichte, Bd. 31 (1962): Nachrichten aus Niedersachsens Urgeschichte