cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Quantum Time-Space Tradeoff for Finding Multiple Collision Pairs
Creators: name: Hamoudi, Yassine
name: Magniez, Frédéric
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: Computational Complexity (cs.CC)
subject: Cryptography and Security (cs.CR)
subject: Data Structures and Algorithms (cs.DS)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: We study the problem of finding $K$ collision pairs in a random function $f : [N] \rightarrow [N]$ by using a quantum computer. We prove that the number of queries to the function in the quantum random oracle model must increase significantly when the size of the available memory is limited. Namely, we demonstrate that any algorithm using $S$ qubits of memory must perform a number $T$ of queries that satisfies the tradeoff $T^3 S \geq Ω(K^3 N)$. Classically, the same question has only been settled recently by Dinur [Eurocrypt'20], who showed that the Parallel Collision Search algorithm of van Oorschot and Wiener achieves the optimal time-space tradeoff of $T^2 S = Θ(K^2 N)$. Our result limits the extent to which quantum computing may decrease this tradeoff. Our method is based on a novel application of Zhandry's recording query technique [Crypto'19] for proving lower bounds in the exponentially small success probability regime. As a second application, we give a simpler proof of the time-space tradeoff $T^2 S \geq Ω(N^3)$ for sorting $N$ numbers on a quantum computer, which was first obtained by Klauck, Špalek and de Wolf [KŠW07].
description: 22 pages; v5: journal version
An experimental study of charge distribution in crystalline and amorphous Si nanoclusters in thin silica films
Creators: name: Thøgersen, Annett
name: Diplas, Spyros
name: Mayandi, Jeyanthinath
name: Finstad, Terje
name: Olsen, Arne
name: Watts, John F.
name: Mitome, Masanori
name: Bando, Yoshio
Publisher: name: arXiv
Year: 2012
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Crystalline and amorphous nanoparticles of silicon in thin silica layers were examined by transmission electron microscopy (TEM), electron energy loss spectroscopy (EELS) and x-ray photoelectron spectroscopy (XPS). We used XPS data in the form of the Auger parameter to separate initial and final state contributions to the Si$_{2p}$ energy shift. The electrostatic charging and electron screening issues as well as initial state effects were also addressed. We show that the chemical shift in the nanocrystals is determined by initial state rather than final state effects, and that the electron screening of silicon core holes in nanocrystals dispersed in SiO$_2$ is inferior to that in pure bulk Si.
Abelian Splittings and JSJ-Decompositions of Bestvina--Brady Groups
Creators: name: Chang, Yu-Chan
Publisher: name: arXiv
Year: 2020
Subjects: subject: Group Theory (math.GR)
subject: FOS: Mathematics

description: We give a characterization of Bestvina--Brady groups split over abelian subgroups and describe a JSJ-decomposition of Bestvina--Brady groups.
description: Fix gaps in various places. This version has been accepted for publication
Pseudorca crassidens
Creators: name: Honacki, James H.
name: Kinman, Kenneth E.
name: Koeppl, James W.
Publisher: name: Zenodo
Year: 1982
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Cetacea
Delphinidae
Pseudorca
Pseudorca crassidens

description: Pseudorca crassidens (Owen, 1846). A History of British Fossil Mammals and Birds, p. 516. TYPE LOCALITY: U.K., England, near Stanford, Lincolnshire Fens (subfossil). DISTRIBUTION: Tropical to temperate waters of the world. PROTECTED STATUS: CITES - Appendix II as Order Cetacea. ISIS NUMBER: 5301411002006001001.
description: Published as part of James H. Honacki, Kenneth E. Kinman & James W. Koeppl, 1982, Order Cetacea, pp. 290-304 in Mammal Species of the World (1 st Edition), Lawrence, Kansas, USA :Alien Press, Inc. & The Association of Systematics Collections on page 295, DOI: 10.5281/zenodo.7352983
Excitations and spin correlations near the interface of two three-dimensional Heisenberg antiferromagnets
Creators: name: Voropajeva, N.
name: Sherman, A.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Magnetic excitations and spin correlations near the interface of two spin-$\frac12$ Heisenberg antiferromagnets are considered using the spin-wave approximation. When the interaction between boundary spins differs essentially from exchange constants inside the antiferromagnets, quasi-two-dimensional spin waves appear in the near-boundary region. They eject bulk magnons from this region, thereby dividing the antiferromagnets into areas with different magnetic excitations. The decreased dimensionality of the near-boundary modes leads to amplified nearest-neighbor spin correlations in the interface area.
description: 6 pages, 5 figures
Area-Law Study of Quantum Spin System on Hyperbolic Lattice Geometries
Creators: name: Gendiar, Andrej
Publisher: name: arXiv
Year: 2020
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Magnetic properties of the transverse-field Ising model on curved (hyperbolic) lattices are studied by a tensor product variational formulation that we have generalized for this purpose. First, we identify the quantum phase transition for each hyperbolic lattice by calculating the magnetization. We study the entanglement entropy at the phase transition in order to analyze the correlations of various subsystems located at the center with the rest of the lattice. We confirm that the entanglement entropy satisfies the area law at the phase transition for fixed coordination number, i.e., it scales linearly with the increasing size of the subsystems. On the other hand, the entanglement entropy decreases as power-law with respect to the increasing coordination number.
description: accepted in Acta Phys. Pol. A (2020)
Pascale Lambrechts, Jean-Pierre Sosson (Hrsg.), Les métiers au Moyen Age. Aspects économiques et sociaux. Actes du colloque international de Louvain-La-Neuve, 7–9 octobre 1993, 1994
Creators: name: Fouquet, Gerhard
Publisher: name: Francia
Year: 2019

description: -
description: Francia, Bd. 23 Nr. 1 (1996)
Lattice and magnetic dynamics in YVO3 Mott insulator studied by neutron scattering and ﬁrst-principles calculations
Creators: name: Tao, Yu
name: Abernathy, Douglas L.
name: Chen, Tianran
name: Yildirim, Taner
name: Yan, Jiaqiang
name: Zhou, Jianshi
name: Goodenough, John B,
name: Louca, Despina
Publisher: name: The University of Texas at Austin
Year: 2021
Subjects: Mott

description: The Mott insulator YVO3 with TN = 118 K is revisited to explore the role of spin, lattice and orbital correlations across the multiple structural and magnetic transitions observed as a function of temperature. Upon cooling, the crystal structure changes from orthorhombic to monoclinic at 200 K, and back to orthorhombic at 77 K, followed by magnetic transitions. From the paramagnetic high temperature phase, C-type ordering is ﬁrst observed at 118 K, followed by a G-type spin re- orientation transition at 77 K. The dynamics of the transitions were investigated via inelastic neutron scattering and ﬁrst principles calculations. An overall good agreement between the neutron data and calculated spectra was observed. From the magnon density of states, the magnetic exchange constants were deduced to be Jab = Jc = -5.8 meV in the G-type spin phase, and Jab = -3.8 meV, Jc = 7.6 meV at 80 K and Jab = -3.0 meV, Jc = 6.0 meV at 100 K in the C-type spin phase. Paramagnetic scattering was observed in the spin ordered phases, well below the C-type transition temperature, that continuously increased above the transition. Fluctuations in the temperature dependence of the phonon density of states were observed between 50 and 80 K as well, coinciding with the G-type to C-type transition. These ﬂuctuations are attributed to optical oxygen modes above 40 meV, from ﬁrst principles calculations. In contrast, little change in the phonon spectra is observed across TN.
Entanglement-entropy study of phase transitions in six-state clock model
Creators: name: Krčmár, Roman
name: Gendiar, Andrej
name: Nishino, Tomotoshi
Publisher: name: arXiv
Year: 2020
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The Berezinskii-Kosterlitz-Thouless (BKT) transitions of the six-state clock model on the square lattice are investigated by means of the corner-transfer matrix renormalization group method. A classical analog of the entanglement entropy $S( L, T )$ is calculated for $L \times L$ square system up to $L = 129$, as a function of temperature $T$. The entropy exhibits a peak at $T = T^*_{~}( L )$, where the temperature depends on both $L$ and the boundary conditions. Applying the finite-size scaling to $T^*_{~}( L )$ and assuming presence of the BKT transitions, the two distinct phase-transition temperatures are estimated to be $T_1^{~} = 0.70$ and $T_2^{~} = 0.88$. The results are in agreement with earlier studies. It should be noted that no thermodynamic functions have been used in this study.
description: accepted in Acta Phys. Pol. A
Mars surface phase function constrained by orbital observations
Creators: name: Vincendon, Mathieu
Publisher: name: arXiv
Year: 2012
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The photometric properties of the surface of Mars describe how remote measurements of surface reflectance can be linked to hemispherical albedo used for energy balance calculations. A simple Lambert model is frequently assumed for global data processing, even through several local studies have revealed the complexity of Mars surface phase functions. In this paper, we derive a mean Bidirectional Reflectance Distribution Function (BRDF) of Mars as averaged over km-sized remote sensor pixels. OMEGA and CRISM data are used to provide observational constraints at solar wavelengths over a wide range of viewing conditions all over the planet. Atmospheric contribution is quantified and removed using a radiative transfer model. A common phase behavior composed of a 5 to 10% backscattering peak associated with an increase of scattered reflectance with emission angle is observed. Consequently, nadir measurements of surface reflectance typically underestimate hemispherical reflectance, or albedo, by 10%. We provide a parameterization of the mean Mars surface phase function based on Hapke formalism (ω = 0.85, θ = 17, c = 0.6, b = 0.12, B0 = 1 and h = 0.05), and quantify the impact of the diffuse illumination conditions reigning on Mars. Our average phase function can be used as a refinement compared to the Lambert model in global data processing and climate modeling.
Motzkin path decompositions of functionals in noncommutative probability
Creators: name: Lenczewski, Romuald
Publisher: name: arXiv
Year: 2020
Subjects: subject: Operator Algebras (math.OA)
subject: Functional Analysis (math.FA)
subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 46L53, 46L54, 06A07

description: We study the decomposition of free random variables in terms of their orthogonal replicas from a new perspective. First, we show that the mixed moments of orthogonal replicas with respect to the normalized linear functional $Φ$ are naturally described in terms of Motzkin paths identified with reduced Motzkin words. Using this fact, we demonstrate that the mixed moments of free random variables with respect to the free product of normalized linear functionals are sums of the mixed moments of order $n$ of the orthogonal replicas of these variables with respect to $Φ$ with summation extending over the set of reduced Motzkin words of lenght $n$. One of the applications of this formula is a decomposition formula for mixed moments of free random variables in terms of their boolean cumulants which corresponds to the decomposition of the lattice ${\rm NC}(n)$ into sublattices $\mathcal{M}(w)$ of partitions which are monotonically adapted to colors in the word $w$. The linear functionals defined by the mixed moments of orthogonal replicas and indexed by reduced Motzkin words play the role of a generating set of the space of product functionals in which the boolean product corresponds to constant Motzkin paths and the free product corresponds to all Motzkin paths.
description: 38 pages, 4 figures
Nonlinear Evolution of the Radiation-Driven Magneto-Acoustic Instability (RMI)
Creators: name: Fernández, Rodrigo
name: Socrates, Aristotle
Publisher: name: arXiv
Year: 2012
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We examine the nonlinear development of unstable magnetosonic waves driven by a background radiative flux -- the Radiation-Driven Magneto-Acoustic Instability (RMI, a.k.a. the "photon bubble" instability). The RMI may serve as a persistent source of density, radiative flux, and magnetic field fluctuations in stably-stratified, optically-thick media. The conditions for instability are present in a variety of astrophysical environments, and do not require the radiation pressure to dominate or the magnetic field to be strong. Here we numerically study the saturation properties of the RMI, covering three orders of magnitude in the relative strength of radiation, magnetic field, and gas energies. Two-dimensional, time-dependent radiation-MHD simulations of local, stably-stratified domains are conducted with Zeus-MP in the optically-thick, highly-conducting limit. Our results confirm the theoretical expectations of Blaes and Socrates (2003) in that the RMI operates even in gas pressure-dominated environments that are weakly magnetized. The saturation amplitude is a monotonically increasing function of the ratio of radiation to gas pressure. Keeping this ratio constant, we find that the saturation amplitude peaks when the magnetic pressure is comparable to the radiation pressure. We discuss the implications of our results for the dynamics of magnetized stellar envelopes, where the RMI should act as a source of sub-photospheric perturbations.
description: accepted by ApJ with minor changes
Scattering theory for Dirac fields near an extreme Kerr-de Sitter black hole
Creators: name: Borthwick, Jack
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mathematical Physics (math-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this paper, we construct a scattering theory for classical massive Dirac fields near the "double" horizon of an extreme Kerr-de Sitter blackhole. Our main tool is the existence of a conjugate operator in the sense of Mourre theory. Additionally, despite the fact that effects of the rotation are 'amplified' near the double horizon, we show that one can still reduce our study to a 1-dimensional problem through an appropriate decomposition of the Hilbert space.
Jean-Marc Moriceau, Gilles Postel-Vinay, Ferme, Entreprise, Famille. Grande exploitation et changements agricoles. Les Chartiers XVIIe–IXe siècles, 1992
Creators: name: Trossbach, Werner
Publisher: name: Francia
Year: 2019

description: -
description: Francia, Bd. 23 Nr. 2 (1996)
Sotalia Gray 1866
Creators: name: Honacki, James H.
name: Kinman, Kenneth E.
name: Koeppl, James W.
Publisher: name: Zenodo
Year: 1982
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Cetacea
Delphinidae
Sotalia

description: Sotalia Gray, 1866. Cat. Seals and Whales Br. Mus., p. 401. COMMENT: Formerly included in Stenidae; see Rice, 1977:7; and comments under Delphinidae. PROTECTED STATUS: CITES - Appendix I as Sotalia spp. ISIS NUMBER: 5301411002015000000.
description: Published as part of James H. Honacki, Kenneth E. Kinman & James W. Koeppl, 1982, Order Cetacea, pp. 290-304 in Mammal Species of the World (1 st Edition), Lawrence, Kansas, USA :Alien Press, Inc. & The Association of Systematics Collections on page 295, DOI: 10.5281/zenodo.7352983
description: {"references": ["Rice, D. W. 1977. A list of the marine mammals of the world. Third ed. NOAA Technical Report, NMFS SSRF- 711: 1 - 15."]}
Mugshot Identification from Manipulated Facial Images
Creators: name: Chennamma, H. R.
name: Rangarajan, Lalitha
Publisher: name: arXiv
Year: 2012
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Multimedia (cs.MM)
subject: FOS: Computer and information sciences

description: Editing on digital images is ubiquitous. Identification of deliberately modified facial images is a new challenge for face identification system. In this paper, we address the problem of identification of a face or person from heavily altered facial images. In this face identification problem, the input to the system is a manipulated or transformed face image and the system reports back the determined identity from a database of known individuals. Such a system can be useful in mugshot identification in which mugshot database contains two views (frontal and profile) of each criminal. We considered only frontal view from the available database for face identification and the query image is a manipulated face generated by face transformation software tool available online. We propose SIFT features for efficient face identification in this scenario. Further comparative analysis has been given with well known eigenface approach. Experiments have been conducted with real case images to evaluate the performance of both methods.
description: 8 pages, 5 figures, 1 table, journal. arXiv admin note: substantial text overlap with arXiv:1106.4907
On the phase transition in the sublattice TASEP with stochastic blockage
Creators: name: Schütz, Gunter M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Probability (math.PR)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 82C26 (Primary), 60K35 (Secondary)

description: We revisit the defect-induced nonequilibrium phase transition from a largely homogeneous free-flow phase to a phase-separated congested phase in the sublattice totally asymmetric simple exclusion process (TASEP) with local deterministic bulk dynamics and a stochastic defect that mimicks a random blockage. Exact results are obtained for the compressibility and density correlations for a stationary grandcanonical ensemble given by the matrix product ansatz. At the critical density the static compressibility diverges while in the phase separated state above the critical point the compressibility vanishes due to strong non-local correlations. These correlations arise from a long range effective interaction between particles that appears in the stationary state despite the locality of the microscopic dynamics.
description: 39 pages
Edge Balance Ratio: Power Law from Vertices to Edges in Directed Complex Network
Creators: name: Wang, Xiaohan
name: Chen, Zhaoqun
name: Liu, Pengfei
name: Gu, Yuantao
Publisher: name: arXiv
Year: 2012
Subjects: subject: Social and Information Networks (cs.SI)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: Power law distribution is common in real-world networks including online social networks. Many studies on complex networks focus on the characteristics of vertices, which are always proved to follow the power law. However, few researches have been done on edges in directed networks. In this paper, edge balance ratio is firstly proposed to measure the balance property of edges in directed networks. Based on edge balance ratio, balance profile and positivity are put forward to describe the balance level of the whole network. Then the distribution of edge balance ratio is theoretically analyzed. In a directed network whose vertex in-degree follows the power law with scaling exponent $γ$, it is proved that the edge balance ratio follows a piecewise power law, with the scaling exponent of each section linearly dependents on $γ$. The theoretical analysis is verified by numerical simulations. Moreover, the theoretical analysis is confirmed by statistics of real-world online social networks, including Twitter network with 35 million users and Sina Weibo network with 110 million users.
description: 22 pages, 6 figures, Journal manuscript
Classical spin Hamiltonians are context-sensitive languages
Creators: name: Stengele, Sebastian
name: Drexel, David
name: Cuevas, Gemma De las
Publisher: name: arXiv
Year: 2020
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Classical spin Hamiltonians are a powerful tool to model complex systems, characterised by a local structure given by the local Hamiltonians. One of the best understood local structures is the grammar of formal languages, which are central in computer science and linguistics, and have a natural complexity measure given by the Chomsky hierarchy. If we see classical spin Hamiltonians as languages, what grammar do the local Hamiltonians correspond to? Here we cast classical spin Hamiltonians as formal languages, and classify them in the Chomsky hierarchy. We prove that the language of (effectively) zero-dimensional spin Hamiltonians is regular, one-dimensional spin Hamiltonians is deterministic context-free, and higher-dimensional and all-to-all spin Hamiltonians is context-sensitive. This provides a new complexity measure for classical spin Hamiltonians, which captures the hardness of recognising spin configurations and their energies. We compare it to the computational complexity of the ground state energy problem, and find a different easy-to-hard threshold for the Ising model. We also investigate the dependence on the language of the spin Hamiltonian. Finally, we define the language of the time evolution of a spin Hamiltonian and classify it in the Chomsky hierarchy. Our work suggests that universal spin models are weaker than universal Turing machines.
description: v6: Very close to published version. v5: fixed two missing references. v4: Completely rewritten, with unified and new results and a new title. v3: More results; 24 pages, 9 figures, 9 tables. v2: More results and extensively rewritten; 18 pages and 7 figures; code of linear bounded automaton also attached. v1: 13 pages, 7 figures, code of deterministic pushdown automaton attached
Poincaré polynomials of a map and a relative Hilali conjecture
Creators: name: Yamaguchi, Toshihiro
name: Yokura, Shoji
Publisher: name: arXiv
Year: 2020
Subjects: subject: Algebraic Topology (math.AT)
subject: FOS: Mathematics

description: In this paper we introduce homological and homotopical Poincaré polynomials $P_f(t)$ and $P^π_f(t)$ of a continuous map $f:X \to Y$ such that if $f:X \to Y$ is a constant map, or more generally, if $Y$ is contractible, then these Poincaré polynomials are respectively equal to the usual homological and homotopical Poincaré polynomials $P_X(t)$ and $P^π_X(t)$ of the source space $X$. Our relative Hilali conjecture $P^π_f(1) \leqq P_f(1)$ is a map version of the the well-known Hilali conjecture $P^π_X(1) \leqq P_X(1)$ of a rationally elliptic space X. In this paper we show that under the condition that $H_i(f;\mathbb Q):H_i(X;\mathbb Q) \to H_i(Y;\mathbb Q)$ is not injective for some $i>0$, the relative Hilali conjecture of product of maps holds, namely, there exists a positive integer $n_0$ such that for $\forall n \geqq n_0$ the \emph{strict inequality $P^π_{f^n}(1) < P_{f^n}(1)$} holds, where $f^n:X^n \to Y^n$. In the final section we pose a question whether a "Hilali"-type inequality $HP^π_X(r_X) \leqq P_X(r_X)$ holds for a rationally hyperbolic space $X$, provided the the homotopical Hilbert--Poincare series $HP^π_X(r_X)$ converges at the radius $r_X$ of convergence.
description: any comments are welcome
Évaluation de la Transparence budgétaire au Maroc : Une Analyse au Prisme du Cadre PEFA (Public Expenditure and Financial Accountability)
Creators: name: EL GHARBAOUI, Mohammed
name: KRAMI, Rachid
name: HABBOUCH, Sami
name: ZOUGARI IDRISSI, Nourelhak
Publisher: name: Zenodo
Year: 2023
Subjects: Transparence ; finances ; budget ; Evaluation PEFA ; Maroc.

description: La transparence budgétaire est essentielle pour renforcer la gestion des finances publiques au Maroc. Au cours de la dernière décennie, le pays a pris diverses mesures pour promouvoir la transparence budgétaire, en mettant l'accent sur la Loi Organique de la Loi des Finances (LOF).
Cet article analyse ces mesures, en se concentrant sur la LOF, qui accorde une importance particulière à la transparence. Nous utilisons les résultats de l'évaluation PEFA-Maroc en 2016 pour évaluer l'état actuel de la transparence budgétaire. De plus, nous simulons une évaluation prédictive pour 2022, en nous focalisant sur la "transparence des finances publiques" et en intégrant les nouvelles dispositions de la LOF.
La comparaison entre les évaluations de 2016 et 2022 montre une tendance globalement positive en matière de transparence des finances publiques, bien que des progrès inégaux subsistent dans certaines sous-composantes. Toutefois, certaines lacunes persistent, notamment en ce qui concerne la qualité de la documentation budgétaire et le mécanisme de transfert de fonds aux collectivités territoriales.
Ces résultats soulignent l'importance de continuer à renforcer la transparence budgétaire au Maroc, en mettant l'accent sur la résolution des lacunes identifiées pour une gestion financière publique plus efficace et responsable.
Jean-Pierre  Jessene, Gilles Deregnaucourt, Jean-Pierre Hirsch, Hervé Leuwers (Hrsg.), Robespierre. De la Nation artésienne à la République et aux Nations, 1994
Creators: name: Monar, Jörg
Publisher: name: Francia
Year: 2019

description: -
description: Francia, Bd. 23 Nr. 2 (1996)
Fine gradings on $\mathfrak{e}_6$
Creators: name: Draper, C.
name: Viruel, A.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics

description: There are fourteen fine gradings on the exceptional Lie algebra $\frak e_6$ over an algebraically closed field of zero characteristic. We provide their descriptions and a proof that they are all.
description: 39 pages
Sotalia fluviatilis
Creators: name: Honacki, James H.
name: Kinman, Kenneth E.
name: Koeppl, James W.
Publisher: name: Zenodo
Year: 1982
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Cetacea
Delphinidae
Sotalia
Sotalia fluviatilis

description: Sotalia fluviatilis (Gervais, 1853). In Gervais, Bull. Soc. Agric. Herault, p. 148. TYPE LOCALITY: Peru, Loreto, Rio Maranon above Pebas. DISTRIBUTION: W. Atlantic from Panama to Santos, Sao Paulo, Brazil; Amazon River system. COMMENT: Includes guianensis and brasiliensis; see Rice, 1977:13. PROTECTED STATUS: CITES - Appendix I as Sotalia spp. ISIS NUMBER: 5301411002015001001. 5301411002015002001 as S. guianensis.
description: Published as part of James H. Honacki, Kenneth E. Kinman & James W. Koeppl, 1982, Order Cetacea, pp. 290-304 in Mammal Species of the World (1 st Edition), Lawrence, Kansas, USA :Alien Press, Inc. & The Association of Systematics Collections on page 295, DOI: 10.5281/zenodo.7352983
description: {"references": ["Rice, D. W. 1977. A list of the marine mammals of the world. Third ed. NOAA Technical Report, NMFS SSRF- 711: 1 - 15."]}
Existence of Horizontal Immersions in Fat Distributions
Creators: name: Bhowmick, Aritra
name: Datta, Mahuya
Publisher: name: arXiv
Year: 2020
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 58A30 (Primary) 58D10, 58A20, 58C15 (Secondary)

description: Contact structures, as well as their holomorphic and quaternionic counterparts are the primary examples of strongly bracket generating (or fat) distributions. In this article we associate a numerical invariant to corank $2$ fat distribution on manifolds, referred to as \emph{degree} of the distribution. The real distribution underlying a holomorphic contact structure is of degree $2$. Using Gromov's sheaf theoretic and analytic techniques of $h$-principle, we prove the existence of horizontal immersions of an arbitrary manifold into degree $2$ fat distributions and the quaternionic contact structures. We also study immersions of a contact manifold inducing the given contact structure.
description: Minor changes according to referee report. Final version. To appear in Int. J. Math
Axions and saxions from the primordial supersymmetric plasma and extra radiation signatures
Creators: name: Graf, Peter
name: Steffen, Frank Daniel
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We calculate the rate for thermal production of axions and saxions via scattering of quarks, gluons, squarks, and gluinos in the primordial supersymmetric plasma. Systematic field theoretical methods such as hard thermal loop resummation are applied to obtain a finite result in a gauge-invariant way that is consistent to leading order in the strong gauge coupling. We calculate the thermally produced yield and the decoupling temperature for both axions and saxions. For the generic case in which saxion decays into axions are possible, the emitted axions can constitute extra radiation already prior to big bang nucleosynthesis and well thereafter. We update associated limits imposed by recent studies of the primordial helium-4 abundance and by precision cosmology of the cosmic microwave background and large scale structure. We show that the trend towards extra radiation seen in those studies can be explained by late decays of thermal saxions into axions and that upcoming Planck results will probe supersymmetric axion models with unprecedented sensitivity.
description: 16 pages, 7 figures; v2: references added, minor clarifying additions, matches published version
Efficient simulation of nonlinear parabolic SPDEs with additive noise
Creators: name: Jentzen, Arnulf
name: Kloeden, Peter
name: Winkel, Georg
Publisher: name: arXiv
Year: 2012
Subjects: subject: Probability (math.PR)
subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: Recently, in a paper by Jentzen and Kloeden [Proc. R. Soc. Lond. Ser. A Math. Phys. Eng. Sci. 465 (2009) 649-667], a new method for simulating nearly linear stochastic partial differential equations (SPDEs) with additive noise has been introduced. The key idea was to use suitable linear functionals of the noise process in the numerical scheme which allow a higher approximation order to be obtained. Following this approach, a new simplified version of the scheme in the above named reference is proposed and analyzed in this article. The main advantage of the convergence result given here is the higher convergence order for nonlinear parabolic SPDEs with additive noise, although the used numerical scheme is very simple to simulate and implement.
description: Published in at http://dx.doi.org/10.1214/10-AAP711 the Annals of Applied Probability (http://www.imstat.org/aap/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Aquatic Symbiosis Genomics Project leadership
Creators: name: Tree of Life (Wellcome Sanger Institute)
Publisher: name: Zenodo
Year: 2023

description: This document holds a record of the team leads at the Wellcome Sanger Institute and genome collection hubs who should be considered coauthors of publications arising from the Aquatic Symbiosis Genomics project (https://www.aquaticsymbiosisgenomics.org/).
Liouville type theorems and periodic solutions for the nonhomogeneous parabolic systems
Creators: name: Jevnikar, Aleks
name: Wang, Jun
name: Yang, Wen
Publisher: name: arXiv
Year: 2020
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35K9, 35J61, 35B45

description: In the present paper we derive Liouville type results and existence of periodic solutions for $χ^{(2)}$ type systems with non-homogeneous nonlinearities. Moreover, we prove both universal bounds as well as singularity and decay estimates for this class of problems. In this study, we have to face new difficulties due to the non-homogenous nonlinearities. To overcome this issue, we carry out delicate integral estimates for this class of nonlinearities and modify the usual scaling and blow up arguments. This seems to be the first result for parabolic systems with non-homogeneous nonlinearities.
description: 24 pages
Measuring Cognitive Abilities in the Wild: Validating a Population-Scale Game-Based Cognitive Assessment
Creators: name: Pedersen, Mads Kock
name: Díaz, Carlos Mauricio Castaño
name: Wang, Qian Janice
name: Alba-Marrugo, Mario Alejandro
name: Amidi, Ali
name: Basaiawmoit, Rajiv Vaid
name: Bergenholtz, Carsten
name: Christiansen, Morten H.
name: Gajdacz, Miroslav
name: Hertwig, Ralph
name: Ishkhanyan, Byurakn
name: Klyver, Kim
name: Ladegaard, Nicolai
name: Mathiasen, Kim
name: Parsons, Christine
name: Rafner, Janet
name: Villadsen, Anders Ryom
name: Wallentin, Mikkel
name: Zana, Blanka
name: Sherson, Jacob Friis
Publisher: name: arXiv
Year: 2020
Subjects: subject: Physics and Society (physics.soc-ph)
subject: General Economics (econ.GN)
subject: FOS: Physical sciences
subject: FOS: Economics and business

description: Rapid individual cognitive phenotyping holds the potential to revolutionize domains as wide-ranging as personalized learning, employment practices, and precision psychiatry. Going beyond limitations imposed by traditional lab-based experiments, new efforts have been underway towards greater ecological validity and participant diversity to capture the full range of individual differences in cognitive abilities and behaviors across the general population. Building on this, we developed Skill Lab, a novel game-based tool that simultaneously assesses a broad suite of cognitive abilities while providing an engaging narrative. Skill Lab consists of six mini-games as well as 14 established cognitive ability tasks. Using a popular citizen science platform (N = 10725), we conducted a comprehensive validation in the wild of a game-based cognitive assessment suite. Based on the game and validation task data, we constructed reliable models to simultaneously predict eight cognitive abilities based on the users' in-game behavior. Follow-'-up validation tests revealed that the models can discriminate nuances contained within each separate cognitive ability as well as capture a shared main factor of generalized cognitive ability. Our game-based measures are five times faster to complete than the equivalent task-based measures and replicate previous findings on the decline of certain cognitive abilities with age in our large cross-sectional population sample (N = 6369). Taken together, our results demonstrate the feasibility of rapid in-the-wild systematic assessment of cognitive abilities as a promising first step towards population-scale benchmarking and individualized mental health diagnostics.
description: 24 pages, 8 figures, and 4 tables. Supplementary Information: osf.io/pnw5z//
Sousa Gray 1866
Creators: name: Honacki, James H.
name: Kinman, Kenneth E.
name: Koeppl, James W.
Publisher: name: Zenodo
Year: 1982
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Cetacea
Delphinidae
Sousa

description: Sousa Gray, 1866. Proc. Zool. Soc. Lond., 1866:213. COMMENT: Formerly included in Stenidae; see Rice, 1977:7; and comments under Delphinidae. PROTECTED STATUS: CITES - Appendix I as Sousa spp. ISIS NUMBER: 5301411002016000000.
description: Published as part of James H. Honacki, Kenneth E. Kinman & James W. Koeppl, 1982, Order Cetacea, pp. 290-304 in Mammal Species of the World (1 st Edition), Lawrence, Kansas, USA :Alien Press, Inc. & The Association of Systematics Collections on page 295, DOI: 10.5281/zenodo.7352983
description: {"references": ["Rice, D. W. 1977. A list of the marine mammals of the world. Third ed. NOAA Technical Report, NMFS SSRF- 711: 1 - 15."]}
Deep Distributional Time Series Models and the Probabilistic Forecasting of Intraday Electricity Prices
Creators: name: Klein, Nadja
name: Smith, Michael Stanley
name: Nott, David J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Methodology (stat.ME)
subject: Econometrics (econ.EM)
subject: Applications (stat.AP)
subject: Computation (stat.CO)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences
subject: FOS: Economics and business

description: Recurrent neural networks (RNNs) with rich feature vectors of past values can provide accurate point forecasts for series that exhibit complex serial dependence. We propose two approaches to constructing deep time series probabilistic models based on a variant of RNN called an echo state network (ESN). The first is where the output layer of the ESN has stochastic disturbances and a shrinkage prior for additional regularization. The second approach employs the implicit copula of an ESN with Gaussian disturbances, which is a deep copula process on the feature space. Combining this copula with a non-parametrically estimated marginal distribution produces a deep distributional time series model. The resulting probabilistic forecasts are deep functions of the feature vector and also marginally calibrated. In both approaches, Bayesian Markov chain Monte Carlo methods are used to estimate the models and compute forecasts. The proposed models are suitable for the complex task of forecasting intraday electricity prices. Using data from the Australian National Electricity Market, we show that our deep time series models provide accurate short term probabilistic price forecasts, with the copula model dominating. Moreover, the models provide a flexible framework for incorporating probabilistic forecasts of electricity demand as additional features, which increases upper tail forecast accuracy from the copula model significantly.
Generation of arbitrary symmetric entangled states with conditional linear optical coupling
Creators: name: Sharypov, Anton V.
name: He, Bing
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: An approach for generating the entangled photonic states |F1,F2>+|F2,F1> from two arbitrary states |F1> and |F2> is proposed. The protocol is implemented by the conditionally induced beam-splitter coupling which leads to the selective swapping between two photonic modes. Such coupling occurs in a quantum system prepared in the superposition of two ground states with only one of them being involved in the swapping. All the entangled states in the category, such as entangled pairs of coherent states or Fock states (N00N states), can be efficiently produced in the same way by this method.
Tensor Train Factorization and Completion under Noisy Data with Prior Analysis and Rank Estimation
Creators: name: Xu, Le
name: Cheng, Lei
name: Wong, Ngai
name: Wu, Yik-Chung
Publisher: name: arXiv
Year: 2020
Subjects: subject: Signal Processing (eess.SP)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Tensor train (TT) decomposition, a powerful tool for analyzing multidimensional data, exhibits superior performance in many machine learning tasks. However, existing methods for TT decomposition either suffer from noise overfitting, or require extensive fine-tuning of the balance between model complexity and representation accuracy. In this paper, a fully Bayesian treatment of TT decomposition is employed to avoid noise overfitting, by endowing it with the ability of automatic rank determination. In particular, theoretical evidence is established for adopting a Gaussian-product-Gamma prior to induce sparsity on the slices of the TT cores, so that the model complexity is automatically determined even under incomplete and noisy observed data. Furthermore, based on the proposed probabilistic model, an efficient learning algorithm is derived under the variational inference framework. Simulation results on synthetic data show the success of the proposed model and algorithm in recovering the ground-truth TT structure from incomplete noisy data. Further experiments on real-world data demonstrate the proposed algorithm performs better in image completion and image classification, compared to other existing TT decomposition algorithms.
Riemann-Liouville processes arising from Branching particle systems
Creators: name: Li, Yuqiang
Publisher: name: arXiv
Year: 2012
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60F17, 60J80

description: It is proved in this paper that Riemann-Liouville processes can arise from the temporal structures of the scaled occupation time fluctuation limits of the site-dependent (d,α,σ(x))branching particle systems in the case of 1=d
description: 12 pages
Analysis of (shifted) piecewise quadratic polynomial collocation for nonlocal diffusion model
Creators: name: Chen, Minghua
name: Shi, Jiankang
name: Yin, Xiaobo
Publisher: name: arXiv
Year: 2020
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: The piecewise quadratic polynomial collocation is used to approximate the nonlocal model, which generally obtain the {\em nonsymmetric indefinite system} [Chen et al., IMA J. Numer. Anal., (2021)]. In this case, the discrete maximum principle is not satisfied, which might be trickier for the stability analysis of the high-order numerical schemes [D'Elia et al., Acta Numer., (2020); Leng et al., SIAM J. Numer. Anal., (2021)]. Here, we present the modified (shifted-symmetric) piecewise quadratic polynomial collocation for solving the linear nonlocal diffusion model, which has the {\em symmetric positive definite system} and satisfies the discrete maximum principle. Using Faulhaber's formula and Riemann zeta function, the perturbation error for symmetric positive definite system and nonsymmetric indefinite systems are given. Then the detailed proof of the convergence analysis for the nonlocal models with the general horizon parameter $δ=\mathcal{O}\left(h^β\right)$, $β\geq0$ are provided. More concretely, the global error is $\mathcal{O}\left(h^{\min\left\{2,1+β\right\}}\right)$ if $δ$ is not set as a grid point, but it shall recover $\mathcal{O}\left(h^{\max\left\{2,4-2β\right\}}\right)$ when $δ$ is set as a grid point. We also prove that the shifted-symmetric scheme is asymptotically compatible, which has the global error $\mathcal{O}\left(h^{\min\left\{2,2β\right\}}\right)$ as $δ,h\rightarrow 0$. The numerical experiments (including two-dimensional case) are performed to verify the convergence.
description: 23 pages
Two accurate time-delay distances from strong lensing: Implications for cosmology
Creators: name: Suyu, S. H.
name: Auger, M. W.
name: Hilbert, S.
name: Marshall, P. J.
name: Tewes, M.
name: Treu, T.
name: Fassnacht, C. D.
name: Koopmans, L. V. E.
name: Sluse, D.
name: Blandford, R. D.
name: Courbin, F.
name: Meylan, G.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Strong gravitational lenses with measured time delays between the multiple images and models of the lens mass distribution allow a one-step determination of the time-delay distance, and thus a measure of cosmological parameters. We present a blind analysis of the gravitational lens RXJ1131-1231 incorporating (1) the newly measured time delays from COSMOGRAIL, (2) archival HST imaging of the lens system, (3) a new velocity-dispersion measurement of the lens galaxy of 323+/-20km/s based on Keck spectroscopy, and (4) a characterization of the line-of-sight structures via observations of the lens' environment and ray tracing through the Millennium Simulation. Our blind analysis is designed to prevent experimenter bias. The joint analysis of the data sets allows a time-delay distance measurement to 6% precision that takes into account all known systematic uncertainties. In combination with the WMAP7 data set in flat wCDM cosmology, our unblinded cosmological constraints for RXJ1131-1231 are: H_0=80.0+5.8/-5.7km/s/Mpc, OmegaDE=0.79+/-0.03 and w=-1.25+0.17/-0.21. We find the results to be statistically consistent with those from the analysis of the gravitational lens B1608+656. The joint constraints from the two lenses and WMAP7 are H_0=75.2+4.4/-4.2km/s/Mpc, OmegaDE=0.76+0.02/-0.03 and w=-1.14+0.17/-0.20 in flat wCDM, and H_0=73.1+2.4/-3.6km/s/Mpc, OmegaL=0.75+0.01/-0.02 and OmegaK=0.003+0.005/-0.006 in open LCDM. Time-delay lenses constrain especially tightly the Hubble constant (5.7% and 4.0% respectively in wCDM and open LCDM) and curvature of the universe. They complement well other cosmological probes, and provide an independent check of unknown systematics. Our measurement of the Hubble constant is completely independent of those based on the local distance ladder method, providing an important consistency check of the standard cosmological model and of general relativity.
description: 21 pages, 12 figures, minor revisions based on referee's comments, accepted for publication in ApJ
Nonlinear response of quantum cascade structures
Creators: name: Winge, David O.
name: Lindskog, Martin
name: Wacker, Andreas
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The gain spectrum of a terahertz quantum cascade laser is analysed by a non equilibrium Green's functions approach. Higher harmonics of the response function were retrievable, providing a way to approach nonlinear phenomena in quantum cascade lasers theoretically. Gain is simulated under operation conditions and results are presented both for linear response and strong laser fields. An iterative way of reconstructing the field strength inside the laser cavity at lasing conditions is described using a measured value of the level of the losses of the studied system. Comparison with recent experimental data from time-domain-spectroscopy indicates that the experimental situation is beyond linear response.
description: 4 pages, 3 figures included in text, to appear in Applied Physics Letters