cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Quantum vacuum emission in a nonlinear optical medium illuminated by a strong laser pulse
Creators: name: Finazzi, Stefano
name: Carusotto, Iacopo
Publisher: name: arXiv
Year: 2012
Subjects: subject: Optics (physics.optics)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A strong light pulse propagating in a nonlinear Kerr medium produces a change in the refractive index, which makes light travel at different speeds inside and outside the pulse. By tuning the pulse velocity, an analog black hole horizon can be obtained in a suitable frequency window. In this paper, we develop a quantum theory of light propagation for this system, including the frequency dispersion of the refractive index of the medium by coupling the electromagnetic field to matter polarization fields. In a configuration with a single black hole horizon, the spectrum of spontaneously emitted particles presents some similarities with Hawking radiation. Furthermore, even in horizonless systems spontaneous vacuum emission is still possible due to the dispersive nature of the medium, yet with dramatically different spectral properties.
description: 22 pages, 16 figures; v2: added new appendix about emitted flux for simplified dispersion relation (linear at low frequencies)
Equilibrium measures for the Hénon map at the first bifurcation: uniqueness and geometric/statistical properties
Creators: name: Senti, Samuel
name: Takahasi, Hiroki
Publisher: name: arXiv
Year: 2012
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 37D25, 37D35, 37D45

description: For strongly dissipative Hénon maps at the first bifurcation where the uniform hyperbolicity is destroyed by the formation of tangencies inside the limit set, we establish a thermodynamic formalism, i.e., prove the existence and uniqueness of an invariant probability measure which maximizes the free energy associated with a non continuous geometric potential $-t\log J^u$, where $t\in\mathbb R$ is in a certain large interval and $J^u$ is the Jacobian in the unstable direction. We obtain geometric and statistical properties of these measures.
description: 39 pages, 8 figures. Ergodic Theory and Dynamical Systems, to appear
Condensation transition of ultracold Bose gases with Rashba spin-orbit coupling
Creators: name: Ozawa, Tomoki
name: Baym, Gordon
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We study the Bose-Einstein condensate phase transition of three-dimensional ultracold bosons with isotropic Rashba spin-orbit coupling. Investigating the structure of Ginzburg-Landau free energy as a function of the condensate density, we show, within the Bogoliubov approximation, that the condensate phase transition is first order with a jump in the condensate density. We calculate the transition temperature and the jump in the condensate density at the transition for large spin-orbit coupling, where the transition temperature depends linearly on the density of particles. Finally, we discuss the feasibility of producing the phase transition experimentally.
description: 5 pages, 2 figures, published version
Computing Néron-Severi groups and cycle class groups
Creators: name: Poonen, Bjorn
name: Testa, Damiano
name: van Luijk, Ronald
Publisher: name: arXiv
Year: 2012
Subjects: subject: Algebraic Geometry (math.AG)
subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 14C22 (Primary) 14C25, 14F20, 14G13 (Secondary)

description: Assuming the Tate conjecture and the computability of étale cohomology with finite coefficients, we give an algorithm that computes the Néron-Severi group of any smooth projective geometrically integral variety, and also the rank of the group of numerical equivalence classes of codimension p cycles for any p.
description: 22 pages; to appear in Compositio Math
Generating Sequences of PSL(2,p)
Creators: name: Nachman, Benjamin
Publisher: name: arXiv
Year: 2012
Subjects: subject: Group Theory (math.GR)
subject: FOS: Mathematics

description: Julius Whiston and Jan Saxl showed that the size of an irredundant generating set of the group G=PSL(2,p) is at most four and computed the size m(G) of a maximal set for many primes. We will extend this result to a larger class of primes, with a surprising result that when p\not\equiv\pm 1\mod 10, m(G)=3 except for the special case p=7. In addition, we will determine which orders of elements in irredundant generating sets of PSL(2,p) with lengths less than or equal to four are possible in most cases. We also give some remarks about the behavior of PSL(2,p) with respect to the replacement property for groups.
description: 23 Pages
Frank Rexroth, Fröhliche Scholastik. Die Wissenschaftsrevolution des Mittelalters, München (C. H. Beck) 2018
Creators: name: Poirel, Dominique
Publisher: name: Francia-Recensio
Year: 2019

description: Frank Rexroth, Fröhliche Scholastik. Die Wissenschaftsrevolution des Mittelalters, München (C. H. Beck) 2018, 505 S., 8 farb. Abb., 6 Karten (Historische Bibliothek der Gerda Henkel Stiftung), ISBN 978-3-406-72521-0, EUR 29,95.
description: Francia-Recensio, 2019/3
Trace Element Partitioning between CAI-Type Melts and Grossite, Melilite, Hibonite, and Olivine
Creators: name: Ustunisik, Gokce
name: Ebel, Denton S.
name: Walker, David
name: Nielsen, Roger L.
name: Gemma, Marina E.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We determined the mineral-melt partition coefficients (Di's) and the compositional and/or temperature dependency between grossite, melilite, hibonite, olivine and Ca-, Al-inclusion (CAI)-type liquids for a number of light (LE), high field strength (HFSE), large ion lithophile (LILE), and rare earth (REE) elements including Li, Be, B, Sr, Zr, Nb, Ba, La, Ce, Eu, Dy, Ho, Yb, Hf, Ta, Th. A series of isothermal crystallization experiments was conducted at 5 kbar pressure and IW+1 in graphite capsules. The starting compositions were selected based on the calculated and experimentally confirmed phase relations during condensation in CI dust-enriched systems (Ebel and Grossman, 2000; Ebel, 2006; Ustunisik et al., 2014). Partition coefficients between melt and gehlenite, hibonite, and grossite show that the trace element budget of igneous CAIs is controlled by these three major Al-bearing phases in addition to pyroxene. In general, LE, LILE, REE, and HFSE partition coefficients (by mass) decrease in the order of Di(Gehlenite-Melt) > Di(Hibonite-Melt) > Di(Grossite-Melt). Results suggest that Di(Gehlenite-Melt) vary by a factor of 2-3 in different melt compositions at the same T (~1500 C). Increased melt Al and Ca, relative to earlier work, increases the compatibility of Di(Gehlenite-Melt), and also the compatibility of Di(Hibonite-Melt), especially for La and Ce. Olivine partitioning experiments confirm that olivine contribution to the trace element budget of CAIs is small due to the low Di(Olivine-Melt) at a range of temperatures while D-Eu, Yb(Olivine-Melt) are sensitive to changes in T and oxygen fugacity. The development of a predictive model for partitioning in CAI-type systems would require more experimental data and the use of analytical instruments capable of obtaining single phase analyses for crystals < 5 micron.
description: 23 pages, 15 figures, 5 tables
Martin Sladeczek, Vorreformation und Reformation auf dem Land in Thüringen. Strukturen – Stiftungswesen – Kirchenbau – Kirchenausstattung, Köln, Weimar, Wien (Böhlau) 2018
Creators: name: Sembdner, Alexander
Publisher: name: Francia-Recensio
Year: 2019

description: Martin Sladeczek, Vorreformation und Reformation auf dem Land in Thüringen. Strukturen – Stiftungswesen – Kirchenbau – Kirchenausstattung, Köln, Weimar, Wien (Böhlau) 2018, 720 S., 67 Abb. (Quellen und Forschungen zu Thüringen im Zeitalter der Reformation, 9), ISBN 978-3-412-50810-4, EUR 100,00.
description: Francia-Recensio, 2019/3
The Real and Complex Techniques in Harmonic Analysis from the Point of View of Covariant Transform
Creators: name: Kisil, Vladimir V.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Functional Analysis (math.FA)
subject: Complex Variables (math.CV)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: Primary 42-02, Secondary 42A20, 42B20, 42B25, 42B35, 42C40, 43A50, 43A80

description: This note reviews complex and real techniques in harmonic analysis. We describe a common source of both approaches rooted in the covariant transform generated by the affine group. Keywords: wavelet, coherent state, covariant transform, reconstruction formula, the affine group, ax+b-group, square integrable representations, admissible vectors, Hardy space, fiducial operator, approximation of the identity, maximal functions, atom, nucleus, atomic decomposition, Cauchy integral, Poisson integral, Hardy--Littlewood maximal functions, grand maximal function, vertical maximal functions, non-tangential maximal functions, intertwining operator, Cauchy-Riemann operator, Laplace operator, singular integral operator, SIO, boundary behaviour, Carleson measure.
description: 31 pages, AMS-LaTeX, no figures; v2: a major revision, sections on representations of the ax+b group and transported norms are added; v3: major revision: an outline section on complex and real variables techniques are added, numerous smaller improvements; v4: minor corrections
Cyclically deformed defects and topological mass constraints
Creators: name: Bernardini, Alex E.
name: da Rocha, Roldao
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mathematical Physics (math-ph)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: A systematic procedure for obtaining defect structures through cyclic deformation chains is introduced and explored in detail. The procedure outlines a set of rules for analytically constructing constraint equations that involve the finite localized energy of cyclically generated defects. The idea of obtaining cyclically deformed defects concerns the possibility of regenerating a primitive (departing) defect structure through successive, unidirectional, and eventually irreversible, deformation processes. Our technique is applied on kink-like and lump-like solutions in models described by a single real scalar field, such that extensions to quantum mechanics follow the usual theory of deformed defects. The preliminary results show that the cyclic device supports simultaneously kink-like and lump-like defects into 3- and 4-cyclic deformation chains with topological mass values closed by trigonometric and hyperbolic deformations. In a straightforward generalization, results concerning with the analytical calculation of $N$-cyclic deformations are obtained and lessons regarding extensions from more elaborated primitive defects are depicted.
description: 36 pages, 9 figures
Philip Manow, Die Politische Ökonomie des Populismus, Berlin (Suhrkamp) 2018
Creators: name: Bührer, Werner
Publisher: name: Francia-Recensio
Year: 2019

description: Philip Manow, Die Politische Ökonomie des Populismus, Berlin (Suhrkamp) 2018, 177 S. (edition suhrkamp, 2728), ISBN 978-3-518-12728-5, EUR 16,50.
description: Francia-Recensio, 2019/3
On finite-dimensional representations of two-parameter quantum affine algebras
Creators: name: Jing, Naihuan
name: Zhang, Honglian
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Algebra (math.QA)
subject: High Energy Physics - Theory (hep-th)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 17B37, 81R50 (Primary) 17B35 (Secondary)

description: A notion of Drinfeld polynomials is introduced for modules of two-parameter quantum affine algebras. Finite dimensional representations are then characterized by sets of $l$-tuples of pairs of Drinfeld polynomials with certain conditions.
description: 14 pages
Structure of ${\rm II_1}$ factors arising from free Bogoljubov actions of arbitrary groups
Creators: name: Houdayer, Cyril
Publisher: name: arXiv
Year: 2012
Subjects: subject: Operator Algebras (math.OA)
subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 46L10, 46L54, 46L55, 22D25

description: In this paper, we investigate several structural properties for crossed product ${\rm II_1}$ factors $M$ arising from free Bogoljubov actions associated with orthogonal representations $π: G \to \mathcal O(H_\mathbf R)$ of arbitrary countable discrete groups. Under fairly general assumptions on the orthogonal representation $π: G \to \mathcal O(H_{\mathbf R})$, we show that $M$ does not have property Gamma of Murray and von Neumann. Then we show that any regular amenable subalgebra $A \subset M$ can be embedded into $L(G)$ inside $M$. Finally, when $G$ is assumed to be amenable, we locate precisely any possible amenable or Gamma extension of $L(G)$ inside $M$.
description: 34 pages; v3: final version, simplified exposition and proof of Theorem B corrected
On the autonomous metric on the group of area-preserving diffeomorphisms of the 2-disc
Creators: name: Brandenbursky, Michael
name: Kedra, Jarek
Publisher: name: arXiv
Year: 2012
Subjects: subject: Geometric Topology (math.GT)
subject: Group Theory (math.GR)
subject: Symplectic Geometry (math.SG)
subject: FOS: Mathematics

description: Let $D^2$ be the open unit disc in the Euclidean plane and let $G:= Diff(D2; area)$ be the group of smooth compactly supported area-preserving diffeomorphisms of $D^2$. We investigate the properties of G endowed with the autonomous metric. In particular, we construct a bi-Lipschitz homomorphism $Z^k \rightarrow G$ of a finitely generated free abelian group of an arbitrary rank. We also show that the space of homogeneous quasi-morphisms vanishing on all autonomous diffeomorphisms in the above group is infinite dimensional.
description: This a revised version, to appear in Algebraic and Geometric Topology, 20 pages, 1 figure
Gemini: Graph estimation with matrix variate normal instances
Creators: name: Zhou, Shuheng
Publisher: name: arXiv
Year: 2012
Subjects: subject: Machine Learning (stat.ML)
subject: Statistics Theory (math.ST)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: Undirected graphs can be used to describe matrix variate distributions. In this paper, we develop new methods for estimating the graphical structures and underlying parameters, namely, the row and column covariance and inverse covariance matrices from the matrix variate data. Under sparsity conditions, we show that one is able to recover the graphs and covariance matrices with a single random matrix from the matrix variate normal distribution. Our method extends, with suitable adaptation, to the general setting where replicates are available. We establish consistency and obtain the rates of convergence in the operator and the Frobenius norm. We show that having replicates will allow one to estimate more complicated graphical structures and achieve faster rates of convergence. We provide simulation evidence showing that we can recover graphical structures as well as estimating the precision matrices, as predicted by theory.
description: Published in at http://dx.doi.org/10.1214/13-AOS1187 the Annals of Statistics (http://www.imstat.org/aos/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Maladera schenklingi
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 schenklingi

description: Maladera schenklingi (Moser, 1918)
Material examined. 2 ♂♂, 7 ♀♀ “ Nepal, P: Narayani, D: Chitwan ~ 2kmW of Sauraha, 180m, 05.VII.2017, 27°34'48"N, 84°28'10"E, #17-22a, leg. A. Weigel, small forest with fruit tress” (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
Optimal reconstruction of the folding landscape using differential energy surface analysis
Creators: name: La Porta, Arthur
name: Denesyuk, Natalia A.
name: de Messieres, Michel
Publisher: name: arXiv
Year: 2012
Subjects: subject: Biomolecules (q-bio.BM)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: In experiments and in simulations, the free energy of a state of a system can be determined from the probability that the state is occupied. However, it is often necessary to impose a biasing potential on the system so that high energy states are sampled with sufficient frequency. The unbiased energy is typically obtained from the data using the weighted histogram analysis method (WHAM). Here we present differential energy surface analysis (DESA), in which the gradient of the energy surface, dE/dx, is extracted from data taken with a series of harmonic biasing potentials. It is shown that DESA produces a maximum likelihood estimate of the folding landscape gradient. DESA is demonstrated by analyzing data from a simulated system as well as data from a single-molecule unfolding experiment in which the end-to-end distance of a DNA hairpin is measured. It is shown that the energy surface obtained from DESA is indistinguishable from the energy surface obtained when WHAM is applied to the same data. Two criteria are defined which indicate whether the DESA results are self-consistent. It is found that these criteria can detect a situation where the energy is not a single-valued function of the measured reaction coordinate. The criteria were found to be satisfied for the experimental data analyzed, confirming that end-to-end distance is a good reaction coordinate for the experimental system. The combination of DESA and the optical trap assay in which a structure is disrupted under harmonic constraint facilitates an extremely accurate measurement of the folding energy surface.
A solenoidal synthetic field and the non-Abelian Aharonov-Bohm effects in neutral atoms
Creators: name: Huo, Ming-Xia
name: Wei, Nie
name: Hutchinson, David A. W.
name: Kwek, Leong Chuan
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: Cold neutral atoms provide a versatile and controllable platform for emulating various quantum systems. Despite efforts to develop artificial gauge fields in these systems, realizing a unique ideal-solenoid-shaped magnetic field within the quantum domain in any real-world physical system remains elusive. Here we propose a scheme to generate a "hairline" solenoid with an extremely small size around 1 micrometer which is smaller than the typical coherence length in cold atoms. Correspondingly, interference effects will play a role in transport. Despite the small size, the magnetic flux imposed on the atoms is very large thanks to the very strong field generated inside the solenoid. By arranging different sets of Laguerre-Gauss (LG) lasers, the generation of Abelian and non-Abelian SU(2) lattice gauge fields is proposed for neutral atoms in ring- and square-shaped optical lattices. As an application, interference patterns of the magnetic type-I Aharonov-Bohm (AB) effect are obtained by evolving atoms along a circle over several tens of lattice cells. During the evolution, the quantum coherence is maintained and the atoms are exposed to a large magnetic flux. The scheme requires only standard optical access, and is robust to weak particle interactions.
On Polynomial Pairs of Integers
Creators: name: Ezerman, Martianus Frederic
name: Meyer, Bertrand
name: Sole, Patrick
Publisher: name: arXiv
Year: 2012
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics

description: The reversal of a positive integer $A$ is the number obtained by reading $A$ backwards in its decimal representation. A pair $(A,B)$ of positive integers is said to be palindromic if the reversal of the product $A \times B$ is equal to the product of the reversals of $A$ and of $B$. A pair $(A,B)$ of positive integers is said to be polynomial if the product $A \times B$ can be performed without carry. In this paper, we use polynomial pairs in constructing and in studying the properties of palindromic pairs. It is shown that polynomial pairs are always palindromic. It is further conjectured that, provided that neither $A$ nor $B$ is itself a palindrome, all palindromic pairs are polynomial. A connection is made with classical topics in recreational mathematics such as reversal multiplication, palindromic squares, and repunits.
description: 13 pages, 3 tables, errors are corrected, some proofs are made more explicit
On adaptive wavelet estimation of a class of weighted densities
Creators: name: Navarro, Fabien
name: Chesneau, Christophe
name: Fadili, Jalal
Publisher: name: arXiv
Year: 2012
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics
subject: 62G07, 62G20

description: We investigate the estimation of a weighted density taking the form $g=w(F)f$, where $f$ denotes an unknown density, $F$ the associated distribution function and $w$ is a known (non-negative) weight. Such a class encompasses many examples, including those arising in order statistics or when $g$ is related to the maximum or the minimum of $N$ (random or fixed) independent and identically distributed (\iid) random variables. We here construct a new adaptive non-parametric estimator for $g$ based on a plug-in approach and the wavelets methodology. For a wide class of models, we prove that it attains fast rates of convergence under the $\mathbb{L}_p$ risk with $p\ge 1$ (not only for $p = 2$ corresponding to the mean integrated squared error) over Besov balls. The theoretical findings are illustrated through several simulations.
Landau electron in a rotating environment: a general factorization of time evolution
Creators: name: Chee, J.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: For the Landau problem with a rotating magnetic field and a potential in the (changing) direction of the field, we derive a general factorization of the time evolution operator that includes the adiabatic factorization as a special case. We assume that the direction of the magnetic field changes with time in a general way, so the Heisenberg equations of motion cannot be solved by quadrature. Also, the potential is assumed to be of a general form. We use the rotation operator associated with the solid angle Berry phase to transform the problem to a rotating reference frame that follows the direction of the magnetic field. In the rotating reference frame, we derive a natural factorization of the time evolution operator by recognizing the crucial role played by a gauge transformation. The major complexity of the problem arises from the coupling between motion in the direction of the magnetic field and motion perpendicular to the field. In the factorization, this complexity is consolidated into a single operator that approaches the identity operator when the potential confines the particle sufficiently close to a plane perpendicular to the magnetic field. The structure of this operator is clarified by deriving an expression for its generating Hamiltonian. The magnetic translation is the most notable physical consequence in the adiabatic limit. This and the non-adiabatic effects are studied as consequences of the general factorization.
description: 13 pages, final version, two references added, a correction and some improvements in presentation
Asymmetry of social interactions and its role in link predictability: the case of coauthorship networks
Creators: name: Orzechowski, Kamil P.
name: Mrowinski, Maciej J.
name: Fronczak, Agata
name: Fronczak, Piotr
Publisher: name: arXiv
Year: 2023
Subjects: subject: Social and Information Networks (cs.SI)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: The paper provides important insights into understanding the factors that influence tie strength in social networks. Using local network measures that take into account asymmetry of social interactions we show that the observed tie strength is a kind of compromise, which depends on the relative strength of the tie as seen from its both ends. This statement is supported by the Granovetter-like, strongly positive weight-topology correlations, in the form of a power-law relationship between the asymmetric tie strength and asymmetric neighbourhood overlap, observed in three different real coauthorship networks and in a synthetic model of scientific collaboration. This observation is juxtaposed against the current misconception that coauthorship networks, being the proxy of scientific collaboration networks, contradict the Granovetter's strength of weak ties hypothesis, and the reasons for this misconception are explained. Finally, by testing various link similarity scores, it is shown that taking into account the asymmetry of social ties can remarkably increase the efficiency of link prediction methods. The perspective outlined also allows us to comment on the surprisingly high performance of the resource allocation index -- one of the most recognizable and effective local similarity scores -- which can be rationalized by the strong triadic closure property, assuming that the property takes into account the asymmetry of social ties.
Testing in the Presence of Nuisance Parameters: Some Comments on Tests Post-Model-Selection and Random Critical Values
Creators: name: Leeb, Hannes
name: Pötscher, Benedikt M.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics
subject: 62F03, 62G10, 62J05

description: We point out that the ideas underlying some test procedures recently proposed for testing post-model-selection (and for some other test problems) in the econometrics literature have been around for quite some time in the statistics literature. We also sharpen some of these results in the statistics literature. Furthermore, we show that some intuitively appealing testing procedures, that have found their way into the econometrics literature, lead to tests that do not have desirable size properties, not even asymptotically.
description: Minor revision. Some typos and errors corrected, some references added
Predictive maintenance for the heated hold-up tank
Creators: name: de Saporta, Benoîte
name: Zhang, Huilong
Publisher: name: arXiv
Year: 2012
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics

description: We present a numerical method to compute an optimal maintenance date for the test case of the heated hold-up tank. The system consists of a tank containing a fluid whose level is controlled by three components: two inlet pumps and one outlet valve. A thermal power source heats up the fluid. The failure rates of the components depends on the temperature, the position of the three components monitors the liquid level in the tank and the liquid level determines the temperature. Therefore, this system can be modeled by a hybrid process where the discrete (components) and continuous (level, temperature) parts interact in a closed loop. We model the system by a piecewise deterministic Markov process, propose and implement a numerical method to compute the optimal maintenance date to repair the components before the total failure of the system.
description: arXiv admin note: text overlap with arXiv:1101.1740
From generalized directed animals to the asymmetric simple exclusion process
Creators: name: Haug, Nils
name: Nechaev, Sergei
name: Tamm, Mikhail
Publisher: name: arXiv
Year: 2012
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Using the generalized normally ordered form of words in a locally-free group of $n$ generators, we show that in the limit $n\to\infty$, the partition function of weighted directed lattice animals on a semi-infinite strip coincides with the partition function of stationary configurations of the asymmetric simple exclusion process (ASEP) with arbitrary entry/escape rates through open boundaries. We relate the features of the ASEP in the different regimes of the phase diagram to the geometric features of the associated generalized directed animals by showing the results of numerical simulations. In particular, we show how the presence of shocks at the first order transition line translates into the directed animal picture. Using the evolution equation for generalized, weighted Lukasiewicz paths, we also provide a straightforward calculation of the known ASEP generating function.
description: 7 pages, 6 figures
Temporal Lorentzian Spectral Triples
Creators: name: Franco, Nicolas
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mathematical Physics (math-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences
subject: 58B34, 53C50, 46C20, 46L52

description: We present the notion of temporal Lorentzian spectral triple which is an extension of the notion of pseudo-Riemannian spectral triple with a way to ensure that the signature of the metric is Lorentzian. A temporal Lorentzian spectral triple corresponds to a specific 3+1 decomposition of a possibly noncommutative Lorentzian space. This structure introduces a notion of global time in noncommutative geometry. As an example, we construct a temporal Lorentzian spectral triple over a Moyal--Minkowski spacetime. We show that, when time is commutative, the algebra can be extended to unbounded elements. Using such an extension, it is possible to define a Lorentzian distance formula between pure states with a well-defined noncommutative formulation.
description: 25 pages, a proposition has been added (Prop. 11) concerning the recovering of the Lorentzian signature, final version
Jessalynn L. Bird, Damian J. Smith (ed.), The Fourth Lateran Council and the Crusade Movement. The Impact of the Council of 1215 on Latin Christendom and the East, Turnhout (Brepols) 2018
Creators: name: Balard, Michel
Publisher: name: Francia-Recensio
Year: 2019

description: Jessalynn L. Bird, Damian J. Smith (ed.), The Fourth Lateran Council and the Crusade Movement. The Impact of the Council of 1215 on Latin Christendom and the East, Turnhout (Brepols) 2018, XII–340 p., 5 b/w ill. (Outremer. Studies in the Crusades and the Latin East, 7), ISBN 978-2-503-58088-3, EUR 89,00.
description: Francia-Recensio, 2019/3
Anne Foerster, Die Witwe des Königs. Zu Vorstellung, Anspruch und Performanz im englischen und deutschen Hochmittelalter, Ostfildern (Jan Thorbecke Verlag) 2018
Creators: name: Krah, Adelheid
Publisher: name: Francia-Recensio
Year: 2019

description: Anne Foerster, Die Witwe des Königs. Zu Vorstellung, Anspruch und Performanz im englischen und deutschen Hochmittelalter, Ostfildern (Jan Thorbecke Verlag) 2018, 352 S., 11 farb. Abb. (Mittelalter-Forschungen, 57), ISBN 978-3-7995-4376-7, EUR 49,00.
description: Francia-Recensio, 2019/3
How Flat is Our Universe Really?
Creators: name: Okouma, P. M.
name: Fantaye, Y.
name: Bassett, B. A.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Distance measurement provide no constraints on curvature independent of assumptions about the dark energy, raising the question, how flat is our Universe if we make no such assumptions? Allowing for general evolution of the dark energy equation of state with 20 free parameters that are allowed to cross the phantom divide, w(z) = -1, we show that while it is indeed possible to match the first peak in the Cosmic Microwave Background with non-flat models and arbitrary Hubble constant, H_0, the full WMAP7 and supernova data alone imply -0.12 < Ω_k < 0.01 (2σ). If we add an H_0 prior, this tightens significantly to Ω_k = 0.002 \pm 0.009 . These constitute the most conservative and model-independent constraints on curvature available today, and illustrate that the curvature-dynamics degeneracy is broken by current data, with a key role played by the Integrated Sachs Wolfe effect rather than the distance to the surface of last scattering. If one imposes a quintessence prior on the dark energy (-1 \leq w(z) \leq 1) then just the WMAP7 and supernova data alone force the Universe to near flatness: Ω_k = 0.013 \pm 0.012. Finally, allowing for curvature, we find that all datasets are consistent with a Harrison-Zel'dovich spectral index, n_s = 1, at 2σ, illustrating the interplay between early and late-universe constraints.
description: 5 pages, 3 figures, 1 table, accepted for publication in Physics Letters B
A C++11 implementation of arbitrary-rank tensors for high-performance computing
Creators: name: Aragón, Alejandro M.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mathematical Software (cs.MS)
subject: FOS: Computer and information sciences
subject: D.1.5; D.2.3; D.3.3; G.4
subject: 97N80, 97N60

description: This article discusses an efficient implementation of tensors of arbitrary rank by using some of the idioms introduced by the recently published C++ ISO Standard (C++11). With the aims at providing a basic building block for high-performance computing, a single Array class template is carefully crafted, from which vectors, matrices, and even higher-order tensors can be created. An expression template facility is also built around the array class template to provide convenient mathematical syntax. As a result, by using templates, an extra high-level layer is added to the C++ language when dealing with algebraic objects and their operations, without compromising performance. The implementation is tested running on both CPU and GPU.
description: 21 pages, 6 figures, 1 table
Die Geschichte von Cluny in den fünf großen Abtbiographien. Übersetzt und mit einer Einleitung versehen von Theodor Klüppel, Stuttgart (Hiersemann) 2018
Creators: name: Neiske, Franz
Publisher: name: Francia-Recensio
Year: 2019

description: Die Geschichte von Cluny in den fünf großen Abtbiographien. Übersetzt und mit einer Einleitung versehen von Theodor Klüppel, Stuttgart (Hiersemann) 2018, XXII–385 S. (Bibliothek der Mittellateinischen Literatur, 15), ISBN 978-3-7772-1819-9, EUR 224,00.
description: Francia-Recensio, 2019/3
Reciprocity and unitarity in scattering from a non-Hermitian complex PT-symmetric potential
Creators: name: Ahmed, Zafar
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: In quantum scattering, Hermiticity is necessary for both reciprocity and unitarity. Reciprocity means that both reflectivity (R) and transmitivity (T) are insensitive to the direction of incidence of a wave (particle) at a scatterer from left/right. Unitarity means that R+T=1. In scattering from non-Hermitian PT-symmetric structures the (left/right) handedness (non-reciprocity) of reflectivity is known to be essential and unitarity remains elusive so far. Here we present a surprising occurrence of both reciprocity and unitarity in scattering from a complex PT-symmetric potential. In special cases, we show that this potential can even become invisible (R=0, T=1) from both left and right sides. We also find that this potential in a parametric regime enjoys a pseudo-unitarity of the type $T+\sqrt{R_{left}R_{right}}=1$.
description: 7 pages. no figures and no tables, two corrections, appeared in Phys. Lett. A
Bruno Lemesle, Quand l’Église corrigeait les excès du clergé. La punition des délits ecclésiastiques au Moyen Âge, Dijon (Éditions universitaires de Dijon) 2018
Creators: name: Viaut, Laura
Publisher: name: Francia-Recensio
Year: 2019

description: Bruno Lemesle, Quand l’Église corrigeait les excès du clergé. La punition des délits ecclésiastiques au Moyen Âge, Dijon (Éditions universitaires de Dijon) 2018, 107 p., ISBN 978-2-36441-264-4, EUR 9,00.
description: Francia-Recensio, 2019/3
Kathryn L. Reyerson, Mother and Sons, Inc. Martha de Cabanis in Medieval Montpellier, Philadelphia (University of Pennsylvania Press) 2018
Creators: name: Köhler, Stephan
Publisher: name: Francia-Recensio
Year: 2019

description: Kathryn L. Reyerson, Mother and Sons, Inc. Martha de Cabanis in Medieval Montpellier, Philadelphia (University of Pennsylvania Press) 2018, VIII–256 p., 5 fig., 4 maps (The Middle Ages Series), ISBN 978-0-8122-4961-3, GBP 50,00.
description: Francia-Recensio, 2019/3
Maladera seriatoguttata Ahrens & Fabrizi 2016
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 seriatoguttata

description: Maladera seriatoguttata Ahrens & Fabrizi, 2016
Material examined. 1 ♂ “ India: Maharashtra, Satari, Kash valley, 27.vii.2013, leg. K. Chandra ” (NZCI).
Remark. This is the first state record of this species for Maharashtra; previously it was reported from the type locality only.
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
title: Edgar Morin – Terra - Pátria : pensar o futuro...
title: Edgar Morin - Earth - Motherland : thinking about the future
titleType: AlternativeTitle
Creators: name: Oliveira Martins, Guilherme W
Publisher: name: Polis. - ISSN 0872-8208. - 2,3 (Janeiro-Junho 2021). - p. 51-54.
Year: 2021

description: Ao celebrarmos o 100.º aniversário de Edgar Morin, devemos lembrar o seu contributo para o pensamento moderno. A complexidade não conduz à eliminação da simplicidade – pelo contrário, integra em si tudo o que ordena, clarifica, precisa e distingue, no processo de conhecer. Também relativamente à complexidade e à completude, importa afirmar que ambas não são confundíveis. Devemos falar, sim, do conhecimento multidimensional – que pressupõe a compreensão dos princípios da imperfeição, da incompletude e da incerteza. A crise atual é multifacetada: é ecológica, pela degradação da biosfera; é demográfica, pela confluência da explosão populacional nos países pobres e da redução nos países ricos, com desenvolvimento de fluxos migratórios gerados pela miséria; é urbana, pelo desenvolvimento de megapolis poluídas e poluentes, com ghettos de ricos ao lado de ghettos de pobres; é da agricultura, pela desertificação rural, concentração urbana e desenvolvimento das monoculturas industrializadas; é ainda crise da política, pela incapacidade de pensar e de afrontar a novidade, perante a crescente complexidade dos problemas; é ainda das religiões, pelo recuo da laicidade, pelo emergir de contradições que as impedem de assumir os seus princípios de fraternidade universal. A ideia de crescimento ilimitado terá de dar lugar a novas perspetivas não só económicas e financeiras, mas sociais e axiológicas.
description: Celebrating the 100th anniversary of Edgar Morin, we must remember his contribution to the modern thought. Complexity does not mean elimination of simplicity – on the contrary, evolves everything which gives order, clarifies, precises and distinguishes the process of knowledge. In what concerns complexity and completion, we must say that they are different. We have to speak about multidimensional knowledge, which presupposes the comprehension of the principles of imperfection, incompletion, and uncertainty. The present crisis is diverse: ecological, with the destruction of biosphere; demographic, by the coexistence between the growth of population in the poor countries and the reduction and ageing in the richest countries, with development of migrations due to poverty; urban, because of megacities highly agents of pollution, with ghettoes of rich people and of poor people; agricultural, because of rural desertification, urban centralism and development of industrialized monocultures; also political, because of the incapacity of thinking and of assuming new realities and the complexity of problems; and also concerning religions with less laicity and the contradictions that are against the principles of universal fraternity. The idea of unlimited growth must give place to new perspectives not only economic and financial but social and axiological.
Kristina Deutsch, Claudia Echinger-Maurach, Eva-Bettina Krems (Hg.), Höfische Bäder in der Frühen Neuzeit. Gestalt und Funktion, Berlin, Boston, MA (De Gruyter) 2017
Creators: name: Grebe, Anja
Publisher: name: Francia-Recensio
Year: 2019

description: Kristina Deutsch, Claudia Echinger-Maurach, Eva-Bettina Krems (Hg.), Höfische Bäder in der Frühen Neuzeit. Gestalt und Funktion, Berlin, Boston, MA (De Gruyter) 2017, 360 S., zahlr. s/w u. farb. Abb., ISBN 978-3-11-050168-1, EUR 79,95.
description: Francia-Recensio, 2019/3
Matthias Bauer, Die transnationale Zusammenarbeit sozialistischer Parteien in der Zwischenkriegszeit. Eine Analyse der außenpolitischen Kooperations- und Vernetzungsprozesse am Beispiel von SPD, SFIO und Labour Party, Düsseldorf (Droste) 2018
Creators: name: Roques, Christian E.
Publisher: name: Francia-Recensio
Year: 2019

description: Matthias Bauer, Die transnationale Zusammenarbeit sozialistischer Parteien in der Zwischenkriegszeit. Eine Analyse der außenpolitischen Kooperations- und Vernetzungsprozesse am Beispiel von SPD, SFIO und Labour Party, Düsseldorf (Droste) 2018, 458 S. (Beiträge zur Geschichte des Parlamentarismus und der politischen Parteien, 176. Parlamente in Europa, 6), ISBN 978-3-7700-5339-1, EUR 49,80.
description: Francia-Recensio, 2019/3
Cosmological brane systems in warped spacetime
Creators: name: Minamitsuji, Masato
name: Uzawa, Kunihito
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this paper, we discuss the time-dependent brane solutions in higher-dimensional supergravity theories. We particularly focus on the dynamical extensions of the intersecting brane solutions involving three branes. We also show that in the near-horizon limits, where the time dependence is negligible, these branes describe warped anti-de Sitter spacetimes as in the corresponding static solutions. We finally examine the lower-dimensional cosmological dynamics obtained after compactifications of the higher-dimensional solutions and show the solutions we have found give the four-dimensional universe with power-law expansion.
description: 54 pages; v4
Condensation of Rocky Material in Astrophysical Environments
Creators: name: Ebel, Denton S.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Volatility-dependent fractionation of the rock-forming elements at high temperatures is an early, widespread process during formation of the earliest solids in protoplanetary disks. Equilibrium condensation calculations allow prediction of the identities and compositions of mineral and liquid phases coexisting with gas under presumed bulk chemical, pressure and temperature conditions. A graphical survey of such results is presented for systems of solar and non-solar bulk composition. Chemical equilibrium was approached to varying degrees in the local regions where meteoritic chondrules, Ca-Al-rich inclusions, matrix and other components formed. Early, repeated vapor-solid cycling and homogenization, followed by hierarchical accretion in dust-rich regions, is hypothesized for meteoritic inclusions. Disequilibrium chemical effects appear to have been common at all temperatures, but increasingly so in less refractory meteoritic components. Work is needed to better model high-temperature solid solutions, indicators of these processes.
description: 43 pages, 4 color plates, 2 figures
Beobachtungen in der Pariser Poussin-Ausstellung
Creators: name: Kauffmann, Georg
Publisher: name: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Year: 2019

description: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege, Bd. 14 Nr. 4 (1961): Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Dora Fanny Rittmeyer: Hans Jakob Läublin, Goldschmied in Schaffhausen, 1664 - 1730. Ein Künstler zur Zeit des Hochbarocks
Creators: name: Rückert, Rainer
Publisher: name: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Year: 2019

description: Rezension zu: Dora Fanny Rittmeyer: Hans Jakob Läublin, Goldschmied in Schaffhausen, 1664 - 1730. Ein Künstler zur Zeit des Hochbarocks. Schaffhausen 1959. Herausgegeben von der Peyer’schen Tobias-Stimmer-Stifung in Schaffhausen. (112 S. und 82 Abb. auf XXXII Tafeln, davon 3 farbig.)
description: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege, Bd. 14 Nr. 8 (1961): Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Nonequilibrium probe of paired electron pockets in the underdoped cuprates
Creators: name: Boyd, G. R.
name: Takei, So
name: Galitski, Victor
Publisher: name: arXiv
Year: 2012
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We propose an experimental method that can be used generally to test whether the cuprate pseudogap involves precursor pairing that acts to gap out the Fermi surface. The proposal involves angular-resolved photoemission spectroscopy (ARPES) performed in the presence of a transport current driven through the sample. We illustrate this proposal with a specific model of the pseudogap that contains a phase-incoherent paired electron and unpaired hole Fermi surfaces. We show that even a weak current tilts the paired band and reveals parts of the previously gapped electron Fermi surface in ARPES if the binding energy is smaller but close to the pseudogap. Stronger currents can also reveal the Fermi surface through direct suppression of pairing. The proposed experiment is sufficiently general such that it can be used to reveal putative Fermi surfaces that have been reconstructed from other types of periodic order and are gapped out due to pairing. The observation of the predicted phenomena should help resolve the central question about the existence of pairs in the enigmatic pseudogap regime.
description: 5 pages, 3 figures (published version)
Rheinisches Amt für Bodendenkmalpflege - Ausgrabungen, Funde und Befunde 1987
Creators: name: Beyer, Brigitte
name: Jürgens, Antonius
name: Rech, Manfred
Publisher: name: Bonner Jahrbücher
Year: 2019

description: Bonner Jahrbücher, Bd. 189.1989: Bonner Jahrbücher
A. McWhirr (Hrsg.), Houses in Roman Cirencester
Creators: name: Klee, Margot
Publisher: name: Bonner Jahrbücher
Year: 2019

description: Rezension zu: A. McWhirr (Hrsg.), Houses in Roman Cirencester. Cirencester Excavations 3. Mit Beiträgen von J. Bayley, P. D. C. Brown, T. C. Darvill, B. Dickinson, M. W. C. Hassall, M. Henig, J. Keely, A. C. King, B. Levitan, D. Mackreth, R. Reece, M. Rennie, J. Shepherd, D. J. Smith, M. Stone, L. Viner, J. S. Wacher, J. P. Wild, S. Roskams. Cirencester Excavations Committee, Cirencester 1986. 272 Seiten, 172 Fotos und Abbildungen.
description: Bonner Jahrbücher, Bd. 189.1989: Bonner Jahrbücher