cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
On subshift presentations
Creators: name: Krieger, Wolfgang
Publisher: name: arXiv
Year: 2012
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 37B10

description: We consider partitioned graphs, by which we mean finite strongly connected directed graphs with a partitioned edge set $ {\mathcal E} ={\mathcal E}^- \cup{\mathcal E}^+$. With additionally given a relation $\mathcal R$ between the edges in ${\mathcal E}^-$ and the edges in $\mathcal E^+ $, and denoting the vertex set of the graph by ${\frak P}$, we speak of an an ${\mathcal R}$-graph ${\mathcal G}_{\mathcal R}({\frak P},{\mathcal E}^-,{\mathcal E}^+) $. From ${\mathcal R}$-graphs ${\mathcal G}_{\mathcal R}({\frak P},{\mathcal E}^-,{\mathcal E}^+) $ we construct semigroups (with zero) ${\mathcal S}_{\mathcal R}({\frak P}, {\mathcal E}^-,{\mathcal E}^+) $ that we call ${\mathcal R}$-graph semigroups. We describe a method of presenting subshifts by means of suitably structured labelled directed graphs $({\mathcal V}, Σ,λ)$ with vertex set ${\mathcal V}$, edge set $Σ$, and a label map that asigns to the edges in $Σ$ labels in an ${\mathcal R}$-graph semigroup ${\mathcal S}_{\mathcal R}({\frak P}, {\mathcal E}^-, {\mathcal E}^-)$. We call the presented subshift an ${\mathcal S}_{\mathcal R}({\frak P}, {\mathcal E}^-, {\mathcal E}^-)$-presentation. We introduce a Property $(B)$ and a Property (c), tof subshifts, and we introduce a notion of strong instantaneity. Under an assumption on the structure of the ${\mathcal R}$-graphs ${\mathcal G}_{\mathcal R}({\frak P},{\mathcal E}^-, {\mathcal E}^-)$ we show for strongly instantaneous subshifts with Property $(A)$ and associated semigroup ${\mathcal S}_{\mathcal R}({\frak P},{\mathcal E}^-,{\mathcal E}^-)$, that Properties $(B)$ and (c) are necessary and sufficient for the existence of an ${\mathcal S}_{\mathcal R}({\frak P}, {\mathcal E}^-,{\mathcal E}^-)$-presentation, to which the subshift is topologically conjugate,
description: 33 pages
Technische Regelwerke in der Europäischen Union
Creators: name: Schauer, Andreas
Publisher: name: LANDTECHNIK
Year: 1997

description: Mit der 1985 verabschiedeten einheitlichen europäischen Akte wurde in Europa der sogenannte neue Harmonisierungsansatz eingeführt. Hierüber wurde bereits ausführlich in den vorangegangenen Beiträgen berichtet. Dieser Beitrag befasst sich mit der europäischen Harmonisierung von Traktoren, deren erste Ansätze auf das Jahr 1959 zurückgehen.
description: LANDTECHNIK, Bd. 52 Nr. 4 (1997)
Bewertung neuer Liegeboxenkonstruktionen
Creators: name: Wandel, Hermann
name: Jungbluth, Thomas
Publisher: name: LANDTECHNIK
Year: 1997

description: Kostengünstiges Bauen ist eine Reaktion auf die ungünstigen ökonomischen Rahmenbedingungen der Milchviehhaltung. Während dies beim Bauwerk die Leicht- und Einfachbauweise erfordert, setzt es bei der Aufstallung einen Mindestkomfort für Schadensbegrenzung beim Vieh voraus. Vor allem im Liegebereich sind Alternativen zu verletzungsträchtigen Liegeboxenabtrennungen und harten Liegeflächen gefordert. Gerade neue Liegeboxen sind den Bedürfnissen hochleistender Tiere mit größerem Rahmen und höherem Gewicht diesbezüglich anzupassen. Liegebereiche dürfen weder durch Technik ausgelöste Krankheiten noch Verhaltensstörungen verursachen, sie müssen ihnen entgegenwirken.
description: LANDTECHNIK, Bd. 52 Nr. 5 (1997)
Elektronische Medien für die landwirtschaftliche Bauplanung
Creators: name: Witzel, Ernst
Publisher: name: LANDTECHNIK
Year: 1997

description: Die meisten EDV-Programme für das Bauen sind auf den Wohnungsbau abgestimmt. Software speziell für die Planung landwirtschaftlicher Betriebsgebäude gibt es dagegen kaum, da hierfür der Markt zu klein ist. Der Beitrag gibt einen Überblick über verfügbare Angebote.
description: LANDTECHNIK, Bd. 52 Nr. 5 (1997)
Leistungsfähige Bergung und Abfuhr von Quaderballen
Creators: name: Henrichsmeyer, Friedrich
Publisher: name: LANDTECHNIK
Year: 1997

description: Um das Witterungsrisiko zu senken und Folgearbeiten nicht zu verzögern, ist eine schnelle Räumung der Getreideschläge bei der Strohernte anzustreben. Der Einsatz der Quaderballenpresse bietet – besonders auf großen Flächen – die Möglichkeit, eine hohe Verfahrensleistung zu erreichen, wenn die technische und organisatorische Kapazität der Maschinen genutzt wird. Die Praxis zeigt allerdings, dass in vielen Betrieben die Auslastung nicht befriedigt – es vergehen bis zu drei Wochen vom Drusch bis zur Räumung des Schlages. Die Organisation des Pressens und besonders der Abfuhr der Ballen bereitet Probleme – darüber hinaus wird das technische Maschinenpotential nicht ausgeschöpft. Eine Steigerung der Verfahrensleistung ist in vielen Fällen möglich.
description: LANDTECHNIK, Bd. 52 Nr. 4 (1997)
X-ray Spectra from MHD Simulations of Accreting Black Holes
Creators: name: Schnittman, Jeremy D.
name: Krolik, Julian H.
name: Noble, Scott C.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present the results of a new global radiation transport code coupled to a general relativistic magneto-hydrodynamic simulation of an accreting, non-rotating black hole. For the first time, we are able to explain from first principles in a self-consistent way all the components seen in the X-ray spectra of stellar-mass black holes, including a thermal peak and all the features associated with strong hard X-ray emission: a power-law extending to high energies, a Compton reflection hump, and a broad iron line. Varying only the mass accretion rate, we are able to reproduce a wide range of X-ray states seen in most galactic black hole sources. The temperature in the corona is T_e ~ 10 keV in a boundary layer near the disk and rises smoothly to T_e >~ 100 keV in low-density regions far above the disk. Even as the disk's reflection edge varies from the horizon out to ~ 6M as the accretion rate decreases, we find that the shape of the Fe Kαline is remarkably constant. This is because photons emitted from the plunging region are strongly beamed into the horizon and never reach the observer. We have also carried out a basic timing analysis of the spectra and find that the fractional variability increases with photon energy and viewer inclination angle, consistent with the coronal hot spot model for X-ray fluctuations.
description: 22pp in emulateapj, v2: ApJ in press
title: Методические подходы к оценке маркетинговых рисков на мебельном  рынке
Creators: name: Афанасьева , Е.
name: Михалев, Д.
Publisher: name: Новгородский государственный университет имени Ярослава Мудрого (НовГУ)
Year: 2022

description: Данная статья посвящена изучению вопроса развития тенденций маркетинга мебельного рынка. В 2020 году в отрасли произошли изменения в моделях потребительского поведения. Компании среднего и малого бизнеса расширяют свое присутствие на рынке, заключая новые контракты и выходя на новые рынки благодаря
техническим усовершенствованиям, инновациям в продуктах и эстетическому дизайну. В связи с тем, что все больше людей работают на дому, растет спрос на эргономичную, но в то же время модную, функциональную, простую в сборке и быструю доставку мебель для домашнего офиса. В результате значительно возросли продажи мебельных компаний, специализирующихся на мебели для домашнего офиса.
The first terms in the expansion of the Bergman kernel in higher degrees
Creators: name: Puchol, Martin
name: Zhu, Jialin
Publisher: name: arXiv
Year: 2012
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics

description: We establish the cancellation of the first $2j$ terms in the diagonal asymptotic expansion of the restriction to the $(0,2j)$-forms of the Bergman kernel associated to the spin${}^c$ Dirac operator on high tensor powers of a positive line bundle twisted by a (non necessarily holomorphic) complex vector bundle, over a compact Kähler manifold. Moreover, we give a local formula for the first and the second (non-zero) leading coefficients.
title: Повышение эффективности деятельности органов государственной и муниципальной власти
Creators: name: Афанасьева, Е.
name: Рагимов, И.
Publisher: name: Новгородский государственный университет имени Ярослава Мудрого (НовГУ)
Year: 2022

description: В данной статье рассмотрена возможность повышения эффективности деятельности органов государственной и муниципальной власти. Данная тема в настоящее время особо актуальна. В наше время уделяется много внимания поиску способов повышения эффективности деятельности органов государственной и муниципальной власти.
Probing CMB Cold Spot through Local Minkowski Functionals
Creators: name: Zhao, Wen
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Both WMAP and PLANCK missions reported the extremely Cold Spot (CS) centered at Galactic coordinate ($l=209^{\circ}$, $b=-57^{\circ}$) in CMB map. In this paper, we study the local non-Gaussianity of CS by defining the local Minkowski functions. We find that the third Minkowski function $ν_2$ is quite sensitive to the non-Gaussianity caused by CS. Compared with the random Gaussian simulations, WMAP CS deviates from Gaussianity at more than 99% confident level at the scale $R\sim10^{\circ}$. Meanwhile, we find that cosmic texture provides an excellent explanation for these anomalies related to WMAP CS, which could be further tested by the future polarization data.
description: 7 pages, 7 figures. RAA accepted. arXiv admin note: text overlap with arXiv:1209.1174
Quantum extremal loop weight modules and monomial crystals
Creators: name: Mansuy, Mathieu
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Algebra (math.QA)
subject: Combinatorics (math.CO)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics

description: In this paper we construct a new family of representations for the quantum toroidal algebras of type $A_n$, which are $\ell$-extremal in the sense of Hernandez [24]. We construct extremal loop weight modules associated to level 0 fundamental weights $\varpi_\ell$ when $n=2r+1$ is odd and $\ell=1, r+1$ or $n$. To do it, we relate monomial realizations of level 0 extremal fundamental weight crystals with integrable representations of $\mathcal{U}_q(sl_{n+1}^{tor})$, and we introduce promotion operators for the level 0 extremal fundamental weight crystals. By specializing the quantum parameter, we get finite-dimensional modules of quantum toroidal algebras at roots of unity. In general, we give a conjectural process to construct extremal loop weight modules from monomial realizations of crystals.
description: 49 pages. Accepted for publication in Pacific Journal of Mathematics
Neutrality of a magnetized two-flavor quark superconductor
Creators: name: Mandal, Tanumoy
name: Jaikumar, Prashanth
Publisher: name: arXiv
Year: 2012
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We investigate the effect of electric and color charge neutrality on the two-flavor color superconducting (2SC) phase of cold and dense quark matter in presence of constant external magnetic fields and at moderate baryon densities. Within the framework of the Nambu-Jona-Lasinio (NJL) model, we study the inter-dependent evolution of the quark's BCS gap and constituent mass with increasing density and magnetic field. While confirming previous results derived for the highly magnetized 2SC phase with color neutrality alone, we obtain new results as a consequence of imposing charge neutrality. In the charge neutral gapless 2SC phase (g2SC), a large magnetic field drives the color superconducting phase transition to a crossover, while the chiral phase transition is first order. At larger diquark-to-scalar coupling ratio $G_D/G_S$, where the 2SC phase is preferred, we see hints of the Clogston-Chandrasekhar limit at a very large value of the magnetic field ($B\sim 10^{19}$G), but this limit is strongly affected by Shubnikov de Haas-van Alphen oscillations of the gap, indicating the transition to a domain-like state.
description: 19 pages, 7 figures, Matches with the published version
On the lattice of normal subgroups in ultraproducts of compact simple groups
Creators: name: Stolz, Abel
name: Thom, Andreas
Publisher: name: arXiv
Year: 2012
Subjects: subject: Group Theory (math.GR)
subject: Logic (math.LO)
subject: FOS: Mathematics
subject: 20F69, 03C20

description: We prove that the lattice of normal subgroups of ultraproducts of compact simple non-abelian groups is distributive. In the case of ultraproducts of finite simple groups or compact connected simple Lie groups of bounded rank the set of normal subgroups is shown to be linearly ordered by inclusion.
description: 33 pages, no figures; v3 minor revision, to appear in PLMS
Haptoglobin-related protein in human plasma correlates to haptoglobin concentrations and phenotypes
Creators: name: Skytthe, Maria Kløjgaard
name: Sørensen, Anna Lahn
name: Hennig, Dorle
name: Sandberg, Maria Boysen
name: Rasmussen, Lars Melholt
name: Højrup, Peter
name: Møller, Holger J.
name: Skjødt, Karsten
name: Moestrup, Søren Kragh
name: Graversen, Jonas Heilskov
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Biochemistry
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Physiology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Cancer
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Computational Biology

description: Haptoglobin-related protein (Hpr) is a plasma protein with high sequence similarity to haptoglobin (Hp). Like Hp, Hpr also binds hemoglobin (Hb) with high affinity, but it does not bind to the Hb-Hp receptor CD163 on macrophages. The Hpr concentration is markedly lower than Hp in plasma and its regulation is not understood. In the present study, we have developed non-crossreactive antibodies to Hpr to analyze the Hpr concentration in 112 plasma samples from anonymized individuals and compared it to Hp. The results show that plasma Hpr correlated with Hp concentrations (rho = 0.46, p = .0001). Hpr accounts for on average 0.35% of the Hp/Hpr pool but up to 29% at low Hp levels. Furthermore, the Hpr concentrations were significantly lower in individuals with the Hp2-2 phenotype compared to those with the Hp2-1 or Hp1-1 phenotypes. Experimental binding analysis did not provide evidence that Hpr associates with Hp and in this way is removed via CD163. In conclusion, the Hpr concentration correlates to Hp concentrations and Hp-phenotypes by yet unknown mechanisms independent of CD163-mediated removal of Hb-Hp complexes.
Inference algorithms for pattern-based CRFs on sequence data
Creators: name: Takhanov, Rustem
name: Kolmogorov, Vladimir
Publisher: name: arXiv
Year: 2012
Subjects: subject: Machine Learning (cs.LG)
subject: Data Structures and Algorithms (cs.DS)
subject: FOS: Computer and information sciences

description: We consider Conditional Random Fields (CRFs) with pattern-based potentials defined on a chain. In this model the energy of a string (labeling) $x_1...x_n$ is the sum of terms over intervals $[i,j]$ where each term is non-zero only if the substring $x_i...x_j$ equals a prespecified pattern $α$. Such CRFs can be naturally applied to many sequence tagging problems. We present efficient algorithms for the three standard inference tasks in a CRF, namely computing (i) the partition function, (ii) marginals, and (iii) computing the MAP. Their complexities are respectively $O(n L)$, $O(n L \ell_{max})$ and $O(n L \min\{|D|,\log (\ell_{max}+1)\})$ where $L$ is the combined length of input patterns, $\ell_{max}$ is the maximum length of a pattern, and $D$ is the input alphabet. This improves on the previous algorithms of (Ye et al., 2009) whose complexities are respectively $O(n L |D|)$, $O(n |Γ| L^2 \ell_{max}^2)$ and $O(n L |D|)$, where $|Γ|$ is the number of input patterns. In addition, we give an efficient algorithm for sampling. Finally, we consider the case of non-positive weights. (Komodakis & Paragios, 2009) gave an $O(n L)$ algorithm for computing the MAP. We present a modification that has the same worst-case complexity but can beat it in the best case.
description: Algorithmica accepted version
Chern Classes and Compatible Power Operations in Inertial K-theory
Creators: name: Edidin, Dan
name: Jarvis, Tyler J.
name: Kimura, Takashi
Publisher: name: arXiv
Year: 2012
Subjects: subject: Algebraic Geometry (math.AG)
subject: Algebraic Topology (math.AT)
subject: FOS: Mathematics
subject: 14N35, 53D45 (Primary), 19L10, 19L47, 55N15, 14H10 (Secondary)

description: Let [X/G] be a smooth Deligne-Mumford quotient stack. In a previous paper the authors constructed a class of exotic products called inertial products on K(I[X/G]), the Grothendieck group of vector bundles on the inertia stack I[X/G]. In this paper we develop a theory of Chern classes and compatible power operations for inertial products. When G is diagonalizable these give rise to an augmented $λ$-ring structure on inertial K-theory. One well-known inertial product is the virtual product. Our results show that for toric Deligne-Mumford stacks there is a $λ$-ring structure on inertial K-theory. As an example, we compute the $λ$-ring structure on the virtual K-theory of the weighted projective lines P(1,2) and P(1,3). We prove that after tensoring with C, the augmentation completion of this $λ$-ring is isomorphic as a $λ$-ring to the classical K-theory of the crepant resolutions of singularities of the coarse moduli spaces of the cotangent bundles $T^*P(1,2)$ and $T^*P(1,3)$, respectively. We interpret this as a manifestation of mirror symmetry in the spirit of the Hyper-Kaehler Resolution Conjecture.
description: Many improvements. Special thanks to the referee for helpful suggestions. To appear in Annals of K-Theory. arXiv admin note: text overlap with arXiv:1202.0603
Recent Discoveries Of New Fishes Inhabiting Deep Pacific Coral Reefs, With Biogeographic Implications
Creators: name: Pyle, Richard L.
Publisher: name: Zenodo
Year: 2005
Subjects: Coral Reef Fishes
Twilight Zone
Mesophotic
Biogeography
Habitat Persistence Hypothesis
Mixed-Gas Diving
Rebreather

description: Recent expeditions to Fiji using advanced mixed-gas, closed-circuit rebreather diving equipment have shed new light on the diversity of ichthyofauna inhabiting deep (~50-150m) coral-reef habitats. Approximately 40 new species have been confirmed, and more than a dozen others represent probable new species. More than half of the total species taken from depths greater than 45m are undescribed, and the rate of discovery exceeds seven new species per hour of dive time. Most of the deep-reef collecting effort was focused at one site near the outer entrance to Suva Harbor, where David Greenfield and associates have conducted extensive surveys of the shallow reef fishes. A comparison between the apparent fish assemblages on deep vs. shallow reefs at this site, in conjunction with patterns of deep-reef new-species discovery elsewhere in the Pacific, suggests that the number of new species yet to be discovered on deep reefs could increase the total Indo-Pacific reef fish species count by 30% or more. These and other qualitative observations of patterns of deep-reef fish species diversity in the Pacific may provide new insights on the potential influence of sea-level changes in shaping patterns of reef-fish biogeography.
description: Oral presentation; transcript embedded within both the PowerPoint file and the PDF.
On four state Hard Core Models on the Cayley Tree
Creators: name: Gandolfo, D.
name: Rozikov, U. A.
name: Ruiz, J.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mathematical Physics (math-ph)
subject: Probability (math.PR)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 82B26, 60K35

description: We consider a nearest-neighbor four state hard-core (HC) model on the homogeneous Cayley tree of order $k$. The Hamiltonian of the model is considered on a set of "admissible" configurations. Admissibility is specified through a graph with four vertices. We first exhibit conditions (on the graph and on the parameters) under which the model has a unique Gibbs measure. Next we turn to some specific cases. Namely, first we study, in the case of a particular graph (the diamond), translation-invariant and periodic Gibbs measures. We provide in both cases the equations of the transition lines separating uniqueness from non--uniqueness regimes. Finally the same is done for "fertile" graphs, the so--called stick, gun, and key (here only translation invariant states are taken into account).
description: 18 pages, 10 figures
Convergence analysis of Strang splitting for Vlasov-type equations
Creators: name: Einkemmer, Lukas
name: Ostermann, Alexander
Publisher: name: arXiv
Year: 2012
Subjects: subject: Numerical Analysis (math.NA)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 65M12, 82D10, 65L05

description: A rigorous convergence analysis of the Strang splitting algorithm for Vlasov-type equations in the setting of abstract evolution equations is provided. It is shown that under suitable assumptions the convergence is of second order in the time step τ. As an example, it is verified that the Vlasov-Poisson equation in 1+1 dimensions fits into the framework of this analysis. Also, numerical experiments for the latter case are presented.
description: submitted to the SIAM Journal on Numerical Analysis
Time reversibility and nonequilibrium thermodynamics of second-order stochastic processes
Creators: name: Ge, Hao
Publisher: name: arXiv
Year: 2012
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Nonequilibrium thermodynamics of a general second-order stochastic system is investigated. We prove that at steady state, under inversion of velocities, the condition of time-reversibility over the phase space is equivalent to the antisymmetry of spatial flux and the symmetry of velocity flux. Then we show that the condition of time-reversibility alone could not always guarantee the Maxwell-Boltzmann distribution. Comparing the two conditions together, we found that the frictional force naturally emerges as the unique odd term of the total force at thermodynamic equilibrium, and is followed by the Einstein relation. The two conditions respectively correspond to two previously reported different entropy production rates. In case that the external force is only position-dependent, the two entropy production rates become one. We prove that such an entropy production rate can be decomposed into two nonnegative terms, expressed respectively by the conditional mean and variance of the thermodynamic force associated with the irreversible velocity flux at any given spatial coordinate. In the small inertia limit, the former term becomes the entropy production rate of the overdamped dynamics; while the anomalous entropy production rate originated from the latter term. Furthermore, regarding the connection between the First Law and Second Law, we found that in the steady state of such a limit, the anomalous entropy production rate is also the leading order of the Boltzmann-factor weighted difference between the spatial heat dissipation densities of the underdamped and overdamped dynamics, while their unweighted difference always tends to vanish.
description: 5 pages, 1 figure
Conférence-Débat : Libres, ouvertes, open : que signifient les adjectifs qualifiant les nouvelles pratiques de recherche contemporaines ? Présentation au LabCMO
Creators: name: Gruson-Daniel Célya
Publisher: name: Zenodo
Year: 2015
Subjects: science ouverte, open science, terminologie, discours, STS,

description: Conférence-débat: Libres, ouvertes, open: que signifient les adjectifs qualifiant les nouvelles pratiques de recherche contemporaines? Le vendredi 17 avril 2015, le LabCMO termine la saison 2014-2015 avec une conférence-débat dans laquelle Célya Gruson-Daniel, doctorante en sciences de l'information et de la communication, nous présentera une clarification de la terminologie de la science ouverte en lien avec les pratiques numériques observées dans le milieu de la recherche. De nouvelles pratiques de recherche apparaissent depuis une décennie dans différentes disciplines scientifiques : publier en libre accès ou sous forme de billets de blogue, partager ses données et utiliser des licences Creative Commons, mener des recherches avec des “non-chercheurs”, etc. Ces initiatives et pratiques de recherche sont liées aux développements des technologies numériques mais aussi à des revendications plus politiques pour un libre accès aux connaissances scientifiques et pour le rapprochement entre science et société. En français, plusieurs adjectifs sont utilisés pour qualifier ces pratiques : libre, ouvert, open. Certaines incohérences dans l'usage de ces adjectifs indiquent des débats de fond : par exemple, pourquoi parler de libre accès mais de science ouverte ? Quels acteurs revendiquent le droit de définir ce qu'est l'open science et au nom de quoi? Cette présentation pose les premiers jalons d’un travail de recherche sur les sens et les représentations de l'ouverture en science, articulés par les acteurs de cette science ouverte (chercheurs, entrepreneurs, innovateurs, bibliothécaires, etc.).
Kondo-like behavior near the metal-to-insulator transition of nano-scale granular aluminum
Creators: name: Bachar, N.
name: Lerer, S.
name: Hacohen-Gourgy, S.
name: Almog, B.
name: Deutscher, G.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We show that the normal state transport properties of nano-scale granular Aluminum films, near the metal to insulator transition, present striking similarities with those of Kondo systems. Those include a negative magneto-resistance, a minimum of resistance R at a temperature Tm in metallic films, a logarithmic rise at low temperatures and a negative curvature of R(T) at high temperatures. These normal state properties are interpreted in terms of spin-flip scattering of conduction electrons by local magnetic moments, possibly located at the metal/oxide interfaces. Their co-existence with the enhanced superconductivity seen in these films is discussed.
description: 6 pages, 6 figures, Submitted to Phys. Rev. Lett
Thermally isolated Luttinger liquids with noisy Hamiltonians
Creators: name: D'Alessio, Luca
name: Rahmani, Armin
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study the dynamics of a quantum-coherent thermally isolated Luttinger liquid with noisy Luttinger parameter. To characterize the fluctuations of the absorbed energy in generic noise-driven systems, we first identify two types of energy moments, which can help tease apart the effects of classical (sample-to-sample) and quantum sources of fluctuations. One type of moment captures the total fluctuations due to both sources, while the other one captures the effect of the classical source only. We then demonstrate that in the Luttinger liquid case, the two types of moments agree in the thermodynamic limit, indicating that the classical source dominates. In contrast to equilibrium thermodynamics, in this driven system the relative fluctuations of energy do not decay with the system size. Additionally, we study the deviations of equal-time correlation functions from their ground-state value, and find a simple scaling behavior.
description: 11 pages, 2 figures
Isospin symmetry breaking and the neutron-proton mass difference
Creators: name: Nasrallah, Nasrallah F.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: QCD sum rules using polynomial kernels are used to evaluate the strong part of the proton-neutron mass difference DeltaM_np in a model independent fashion. The result for the mass difference turns out to depend sensitively on the value of the four quark condensate and reproduces the experimental value of DeltaM_np for ~ 2^2.
description: Arguments detailed. Two references added. Version to appear in Physical Review C. DOI:10.1103/PhysRevC.00.005200
On the resilience of helical magnetic fields to turbulent diffusion and the astrophysical implications
Creators: name: Blackman, Eric G.
name: Subramanian, Kandaswamy
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: The extent to which large scale magnetic fields are susceptible to turbulent diffusion is important for interpreting the need for in situ large scale dynamos in astrophysics and for observationally inferring field strengths compared to kinetic energy. By solving coupled equations for magnetic energy and magnetic helicity in a system initiated with isotropic turbulence and an arbitrarily helical large scale field, we quantify the decay rate of the latter for a bounded or periodic system. The energy associated with the non-helical magnetic field rapidly decays by turbulent diffusion, but the decay rate of the helical component depends on whether the ratio of its magnetic energy to the turbulent kinetic energy exceeds a critical value given by M_{1,c} =(k_1/k_2)^2, where k_1 and k_2 are the wave numbers of the large and forcing scales. Turbulently diffusing helical fields to small scales while conserving magnetic helicity requires a rapid increase in total magnetic energy. As such, only when the helical fields are sub-critical can they so diffuse. When super-critical, the large scale helical field decays slowly, at a rate determined by microphysical dissipation even when macroscopic turbulence is present. Amplification of small scale magnetic helicity abates the turbulent diffusion. Two implications are that: (1) Standard arguments supporting the need for in situ large scale dynamos based on the otherwise rapid turbulent diffusion of large scale fields require re-thinking since only the non-helical field is so diffused in a closed system. Boundary terms could however provide potential pathways for rapid change of the large scale helical field. (2) Since M_{1,c} <<1 for k_1 << k_2, the presence of long-lived ordered large scale helical fields, as in extragalactic jets, does not guarantee that the magnetic field dominates the kinetic energy.
description: published in MNRAS (in this replacement, the missing .bbl file has been added)
Robert Fleischer, Der Klagefrauensarkophag aus Sidon
Creators: name: Borbein, Adolf H.
Publisher: name: Bonner Jahrbücher
Year: 2019

description: Rezension zu: Robert Fleischer, Der Klagefrauensarkophag aus Sidon. Aufnahmen von Wolf Schiele. Istanbuler Forschungen 34. Verlag Ernst Wasmuth, Tübingen 1983. VIII, 88 Seiten mit 4 Abbildungen, 48 Tafeln mit 74 Abbildungen
description: Bonner Jahrbücher, Bd. 187.1987: Bonner Jahrbücher
François Baratte und Catherine Metzger, Catalogue des sarcophages en pierre d’époques romaine et paléochretienne
Creators: name: Koch, Guntram
Publisher: name: Bonner Jahrbücher
Year: 2019

description: Rezension zu: François Baratte und Catherine Metzger, Catalogue des sarcophages en pierre d’époques romaine et paléochretienne. Musée du Louvre. Ministère de la Culture. Editions de la Réunion des musées nationaux, Paris 1985. 337 Seiten mit zahlreichen Abbildungen
description: Bonner Jahrbücher, Bd. 187.1987: Bonner Jahrbücher
Pierre Gros, Byrsa III. Rapport sur les campagnes de fouilles de 1977 à 1 980: la basilique orientale et ses abords
Creators: name: Neudecker, Richard
Publisher: name: Bonner Jahrbücher
Year: 2019

description: Rezension zu: Pierre Gros, Byrsa III. Rapport sur les campagnes de fouilles de 1977 à 1 980: la basilique orientale et ses abords. Collection de l’École Française de Rome 41, 1985. 220 Seiten mit Abbildungen.
description: Bonner Jahrbücher, Bd. 187.1987: Bonner Jahrbücher
Erwin Keller, Die frühkaiserzeitlichen Körpergräber von Heimstetten bei München und die verwandten Funde aus Südbayern
Creators: name: Kunow, Jürgen
Publisher: name: Bonner Jahrbücher
Year: 2019

description: Rezension zu: Erwin Keller, Die frühkaiserzeitlichen Körpergräber von Heimstetten bei München und die verwandten Funde aus Südbayern. Münchener Beiträge zur Vor-und Frühgeschichte 37. C. H. Beck’sche Verlagsbuchhandlung, München 1984. 78 Seiten mit 5 Abbildungen und 1 Tabelle, 23 Tafeln.
description: Bonner Jahrbücher, Bd. 187.1987: Bonner Jahrbücher
Heinz Heinen, Trier und das Trevererland in römischer Zeit
Creators: name: Jehne, Martin
Publisher: name: Bonner Jahrbücher
Year: 2019

description: Rezension zu: Heinz Heinen, Trier und das Trevererland in römischer Zeit. 2000 Jahre Trier, Band 1. Spee-Verlag, Trier 1985. XXIII, 468 Seiten, 119 Abbildungen, 4 Kartenbeilagen.
description: Bonner Jahrbücher, Bd. 187.1987: Bonner Jahrbücher
Valdemar M. Mikkelsen, Borup, Man and Vegetation
Creators: name: Knörzer, Karl Heinz
Publisher: name: Bonner Jahrbücher
Year: 2019

description: Rezension zu: Valdemar M. Mikkelsen, Borup, Man and Vegetation. The National Museum of Denmark, Kopenhagen 1986. 47 Seiten, 11 Abbildungen, 6 Tabellen
description: Bonner Jahrbücher, Bd. 187.1987: Bonner Jahrbücher
Johannes Bengedans’ bøssemester- og krigsbog om krigskunst og kanoner. / Das Büchsenmeister- und Kriegsbuch des Johannes Bengedans. Kriegskunst und Kanonen
Creators: name: Heine, Hans-Wilhelm
Publisher: name: Nachrichten aus Niedersachsens Urgeschichte
Year: 2019

description: Rezension zu: Johannes Bengedans’ bøssemester- og krigsbog om krigskunst og kanoner. / Das Büchsenmeister- und Kriegsbuch des Johannes Bengedans. Kriegskunst und Kanonen. Herausgegeben von Hans Blosen und Rikke Agnete Olsen under medvirken af / unter Mitarbeit von Aage Andersen, Bendt Falkesgaard Pedersen og / und Frede Storborg. 2 Bände. Band 1: 287 Seiten mit 158 Seiten farbigem Faksimile-Druck der Handschrift und 1 farbiger Textabbildung; Band 2: 149 Seiten; beide Bände mit farbigem Titelbild. Beiträge zweisprachig (dänisch/ deutsch), englische Zusammenfassung. Aarhus (DK): Aarhus Universitetsforlag 2006. Gebunden 56,95 €. 1SBN-13: 978-87- 7934-162-3.
description: Nachrichten aus Niedersachsens Urgeschichte, Bd. 76 (2007): Nachrichten aus Niedersachsens Urgeschichte
Pierre Petrequin, Gens de l’eau, gens de la terre / Anne-Marie und Pierre Petrequin, Habitat lacustre du Benin
Creators: name: Gallay, Gretel
Publisher: name: Bonner Jahrbücher
Year: 2019

description: Rezension zu: Pierre Petrequin, Gens de l’eau, gens de la terre. Ethno-archeologie des communautes lacust- res. Collection ’La memoire du temps1. Hachette, Paris 1984. 345 Seiten, 38 Abbildungen / Anne-Marie und Pierre Petrequin, Habitat lacustre du Benin. Une approche ethnoarcheologi- que. Editions Recherche sur les civilisations. A.D.P.F., Paris 1984. 214 Seiten, 110 Tafeln, 75 Abbildungen
description: Bonner Jahrbücher, Bd. 187.1987: Bonner Jahrbücher
Gisela Schumacher-Matthäus, Studien zu bronzezeitlichen Schmucktrachten im Karpatenbecken
Creators: name: Kilian, Imma
Publisher: name: Bonner Jahrbücher
Year: 2019

description: Rezension zu: Gisela Schumacher-Matthäus, Studien zu bronzezeitlichen Schmucktrachten im Karpatenbecken. Ein Beitrag zur Deutung der Hortfunde im Karpatenbecken. Marburger Studien zur Vor- und Frühgeschichte 6. Verlag Philipp von Zabern, Mainz 1985. 266 Seiten, 77 Tafeln, 51 Karten
description: Bonner Jahrbücher, Bd. 187.1987: Bonner Jahrbücher
Ilse Kleemann, Frühe Bewegung. Untersuchungen zur archaischen Form bis zum Aufkommen der Ponderation in der griechischen Kunst
Creators: name: Ridgway, Brunilde Sismondo
Publisher: name: Bonner Jahrbücher
Year: 2019

description: Rezension zu: Ilse Kleemann, Frühe Bewegung. Untersuchungen zur archaischen Form bis zum Aufkommen der Ponderation in der griechischen Kunst. Einführung und Überblick 1. Grundzüge der Anlage von Bewegung sowie praktischer Teil: Arbeitsweise und Hilfsmittel. Verlag Philipp von Zabern, Mainz 1984. XV, 213 pages, 84 text illustrations and 76 photographs on 68 plates. Portfolio with 42 'Beilagen'
description: Bonner Jahrbücher, Bd. 187.1987: Bonner Jahrbücher
Pedro A. Barceló, Roms auswärtige Beziehungen unter der Constantinischen Dynastie (306-363)
Creators: name: Haehling, Raban Von
Publisher: name: Bonner Jahrbücher
Year: 2019

description: Rezension zu: Pedro A. Barceló, Roms auswärtige Beziehungen unter der Constantinischen Dynastie (306-363). Eichstätter Beiträge 3. Abteilung Geschichte. Verlag Pustet, Regensburg 1981. 226 Seiten
description: Bonner Jahrbücher, Bd. 187.1987: Bonner Jahrbücher
Discrete State Transition Algorithm for Unconstrained Integer Optimization Problems
Creators: name: Zhou, Xiaojun
Publisher: name: arXiv
Year: 2012
Subjects: subject: Optimization and Control (math.OC)
subject: Information Theory (cs.IT)
subject: Probability (math.PR)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: A recently new intelligent optimization algorithm called discrete state transition algorithm is considered in this study, for solving unconstrained integer optimization problems. Firstly, some key elements for discrete state transition algorithm are summarized to guide its well development. Several intelligent operators are designed for local exploitation and global exploration. Then, a dynamic adjustment strategy ``risk and restoration in probability" is proposed to capture global solutions with high probability. Finally, numerical experiments are carried out to test the performance of the proposed algorithm compared with other heuristics, and they show that the similar intelligent operators can be applied to ranging from traveling salesman problem, boolean integer programming, to discrete value selection problem, which indicates the adaptability and flexibility of the proposed intelligent elements.
description: 14 pages, 13 figures
The Tetrahedron Zamolodchikov Algebra and the AdS5 x S5 S-matrix
Creators: name: Mitev, Vladimir
name: Staudacher, Matthias
name: Tsuboi, Zengo
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mathematical Physics (math-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The S-matrix of the $AdS_5 \times S^5$ string theory is a tensor product of two centrally extended su(2|2) S-matrices, each of which is related to the R-matrix of the Hubbard model. The R-matrix of the Hubbard model was first found by Shastry, who ingeniously exploited the fact that, for zero coupling, the Hubbard model can be decomposed into two XX models. In this article, we review and clarify this construction from the AdS/CFT perspective and investigate the implications this has for the $AdS_5 \times S^5$ S-matrix.
description: 41 pages, 1 table, revised version, published in Communications in Mathematical Physics (2017)
Unconditional convergence and optimal error estimates of a Galerkin-mixed FEM for incompressible miscible flow in porous media
Creators: name: Li, Buyang
name: Sun, Weiwei
Publisher: name: arXiv
Year: 2012
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: In this paper, we study the unconditional convergence and error estimates of a Galerkin-mixed FEM with the linearized semi-implicit Euler time-discrete scheme for the equations of incompressible miscible flow in porous media. We prove that the optimal $L^2$ error estimates hold without any time-step (convergence) condition, while all previous works require certain time-step condition. Our theoretical results provide a new understanding on commonly-used linearized schemes for nonlinear parabolic equations. The proof is based on a splitting of the error function into two parts: the error from the time discretization of the PDEs and the error from the finite element discretization of corresponding time-discrete PDEs. The approach used in this paper is applicable for more general nonlinear parabolic systems and many other linearized (semi)-implicit time discretizations.
Broadcast Feedback As Causal Mechanisms For Migration
Creators: name: Bakewell, Oliver
name: Jolivet, Dominique
Publisher: name: Zenodo
Year: 2015

description: Abstract

This paper is based on the findings of the Theorizing the Evolution of European Migration Systems (THEMIS) project, which explores how the migration of people at one point in time affects subsequent patterns of migration to the same area. It focuses on the feedback processes: the social mechanisms that link migration experiences across time and space. Drawing on THEMIS data, this paper looks at the role of migration narratives disseminated through publicly visible examples in shaping attitudes to migration, aspirations and decision making. These can be found at a local level – in migrants’ houses, clothes, cars, or changed attitudes and behaviours for instance. They are also available globally through broadcast media and the internet. In the case of Ukrainians moving to Portugal in the early 2000s, the scale of the movement rapidly became a subject of public debate, ensuring that stories about migrants were present in newspapers and on television and radio. As a result the impact of earlier migration was seen far beyond social networks. Likewise, a Brazilian soap opera showing Brazilians studying in the Netherlands increased the profile of the Netherlands as a potential destination country. The news of the economic crisis in Europe and its impact on the employment prospects for migrants has also been widely disseminated in origin countries, changing people’s imaginations of Europe and their interest in migration. This paper shows how this type of social mechanism stands apart from the idea of normative pressure or influence carried through social networks: it is a more nuanced mechanism, which may become normative only when it creates new conditions in which migration (or the rejection of migration) is broadly perceived as a social requirement.
Joseph Maier, Architektur im römischen Relief
Creators: name: Schmidt-Colinet, Andreas
Publisher: name: Bonner Jahrbücher
Year: 2019

description: Rezension zu: Joseph Maier, Architektur im römischen Relief. Habelts Dissertationsdruck Reihe Klassische Archäologie Heft 23. Dr. Rudolf Habelt GmbH, Bonn 1985. 276 Seiten, 16 Zeichnungen.
description: Bonner Jahrbücher, Bd. 187.1987: Bonner Jahrbücher
General relations for quantum gases in two and three dimensions. II. Bosons and mixtures
Creators: name: Werner, Félix
name: Castin, Yvan
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We derive exact general relations between various observables for N bosons with zero-range interactions, in two or three dimensions, in an arbitrary external potential. Some of our results are analogous to relations derived previously for two-component fermions, and involve derivatives of the energy with respect to the two-body s-wave scattering length a. Moreover, in the three-dimensional case, where the Efimov effect takes place, the interactions are characterized not only by a, but also by a three-body parameter R\_t. We then find additional relations which involve the derivative of the energy with respect R\_t. In short, this derivative gives the probability to find three particles close to each other. Although it is evaluated for a totally loss-less model, it remarkably also gives the three-body loss rate always present in experiments (due to three-body recombination to deeply bound diatomic molecules), at least in the limit where the so-called inelasticity parameter eta is small enough. As an application, we obtain, within the zero-range model and to first order in eta, an analytic expression for the three-body loss rate constant for a non-degenerate Bose gas with infinite scattering length. We also discuss the generalization to arbitrary mixtures of bosons and/or fermions.
description: Published version, augmented by (i) a note in section III on the universal correction to the ground state energy of the 2D weakly interacting Bose gas due to a nonzero interaction range and (ii) a note in section IV.C on the decay rate due to three-body losses of an Efimov trimer close to the atom-dimer dissociation threshold
Maximal quantum mechanical symmetry: Projective representations of the inhomogenous symplectic group
Creators: name: Low, Stephen G.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mathematical Physics (math-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A symmetry in quantum mechanics is described by the projective representations of a Lie symmetry group that transforms between physical quantum states such that the square of the modulus of the states is invariant. The Heisenberg commutation relations, that are fundamental to quantum mechanics, must be valid in all of these physical states. This paper shows that the maximal quantum symmetry group, whose projective representations preserve the Heisenberg commutation relations in this manner, is the inhomogeneous symplectic group. The projective representations are equivalent to the unitary representations of the central extension of the inhomogeneous symplectic group. This centrally extended group is the semidirect product of the cover of the symplectic group and the Weyl-Heisenberg group. Its unitary irreducible representations are computed explicitly using the Mackey representation theorems for semidirect product groups.
description: International Congress on Mathematical Physics, 2012, Aalborg, Denmark
The Ice-Dip Project At Cern And My Role
Creators: name: Santogidis, Aram
Publisher: name: Zenodo
Year: 2015
Subjects: ICE-DIP
Xeon Phi
ALFA
CERN
Online processing
DAQ
ZeroMQ

description: This presentation was about the ICE-DIP project and CERN in general. It took place at the System and Media Laboratory group at Hong Kong University of Science and Technology.