cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The Statistics of the Cross-Spectrum and the Spectrum Average: Generalization to Multiple Instruments
Creators: name: Baudiquez, Antoine
name: Lantz, Éric
name: Rubiola, Enrico
name: Vernotte, François
Publisher: name: arXiv
Year: 2022
Subjects: subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences

description: This article addresses the measurement of the power spectrum of red noise processes at the lowest frequencies, where the minimum acquisition time is so long that it is impossible to average on a sequence of data record. Therefore, averaging is possible only on simultaneous observation of multiple instruments. This is the case of radio astronomy, which we take as the paradigm, but examples may be found in other fields such as climatology and geodesy. We compare the Bayesian confidence interval of the red-noise parameter using two estimators, the spectrum average and the cross-spectrum. While the spectrum average is widely used, the cross-spectrum using multiple instruments is rather uncommon. With two instruments, the cross-spectrum estimator leads to the Variance-Gamma distribution. A generalization to $q$ devices is provided, with the example of the observation of millisecond pulsars with 5 radio telescopes.
description: 10 pages, 7 figures and 3 tables
A Case Study of a President's Use of His Power and Influence in the Control of Foreign Relations, March 4, 1933-January 1, 1938
Creators: name: Lineweaver, Helen P.
Publisher: name: American University
Year: 2023
Subjects: classificationCode: 430321
subject: North American history
classificationCode: 4408
subject: Political science
subject: FOS: Political science
classificationCode: 440808
subject: International relations

description: An attempt is made in this study to analyze and evaluate the character and degree of leadership portrayed by Franklin D. Roosevelt in the conduct of foreign relations, during the period covered. The study was undertaken as a possible means of determining just why, how, and by whom, the foreign policy of the united States is initiated and controlled, but more particularly the part Mr. Roosevelt has played in the process.
Circulant Digraphs Integral over Number Fields
Creators: name: Li, Fei
Publisher: name: arXiv
Year: 2012
Subjects: subject: Number Theory (math.NT)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05C25, 05C50

description: A number field K is a finite extension of rational number field Q. A circulant digraph integral over K means that all its eigenvalues are algebraic integers of K. In this paper we give the sufficient and necessary condition for circulant digraphs which are integral over a number field K. And we solve the Conjecture3.3 in [XM] and find it is affirmative.
description: 7 pages
A Case Study of a President's Use of His Power and Influence in the Control of Foreign Relations, March 4, 1933-January 1, 1938
Creators: name: Lineweaver, Helen P.
Publisher: name: American University
Year: 2023

description: An attempt is made in this study to analyze and evaluate the character and degree of leadership portrayed by Franklin D. Roosevelt in the conduct of foreign relations, during the period covered. The study was undertaken as a possible means of determining just why, how, and by whom, the foreign policy of the united States is initiated and controlled, but more particularly the part Mr. Roosevelt has played in the process.
A mechanical erosion model for two-phase mass flows
Creators: name: Pudasaini, Shiva P.
name: Fischer, Jan-Thomas
Publisher: name: arXiv
Year: 2016
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Erosion, entrainment and deposition are complex and dominant, but yet poorly understood, mechanical processes in geophysical mass flows. Here, we propose a novel, process-based, two-phase, erosion-deposition model capable of adequately describing these complex phenomena commonly observed in landslides, avalanches, debris flows and bedload transport. The model is based on the jump in the momentum flux including changes of material and flow properties along the flow-bed interface and enhances an existing general two-phase mass flow model (Pudasaini, 2012). A two-phase variably saturated erodible basal morphology is introduced and allows for the evolution of erosion-deposition-depths, incorporating the inherent physical process including momentum and rheological changes of the flowing mixture. By rigorous derivation, we show that appropriate incorporation of the mass and momentum productions or losses in conservative model formulation is essential for the physically correct and mathematically consistent description of erosion-entrainment-deposition processes. We show that mechanically deposition is the reversed process of erosion. We derive mechanically consistent closures for coefficients emerging in the erosion rate models. We prove that effectively reduced friction in erosion is equivalent to the momentum production. With this, we solve the long standing dilemma of mass mobility, and show that erosion enhances the mass flow mobility. The novel enhanced real two-phase model reveals some major aspects of the mechanics associated with erosion, entrainment and deposition. The model appropriately captures the emergence and propagation of complex frontal surge dynamics associated with the frontal ambient-drag with erosion.
Status and perspectives of the CUORE background model
Creators: name: Ghislandi, Stefano
Publisher: name: Zenodo
Year: 2022

description: The Cryogenic Underground Observatory for Rare Events (CUORE) is a tonne scale detector searching for neutrinoless double beta decay (0νββ) in 130Te. The CUORE array is made of 988 TeO2 crystals and operates at around 15 mK in the Gran Sasso National Laboratories (Italy).
 Being the 0νββ a very rare process, every single background component has to be precisely understood. Material screenings and assays, together with a detailed Monte Carlo simulation, accomplish this essential and complex task, modeling the experimental background.
 The CUORE background model reconstructs the data by means of a Bayesian fitting algorithm, estimating the contamination activities, measuring the half-life of decays such as the two neutrino double beta decay and allowing to put limits on other processes still to be observed.
 The multi-segmented nature of CUORE instrinsically contains useful geometrical information related to the crystals and the surrounding setup. The granularity of CUORE can be extremely benefical to the performance of the background model: it can lead to a more precise source localization and a more mature description of the experimental setup, the same that will host a next generation experiment: CUPID.
 In this contribution, I will discuss the strategy used to include topological data in the CUORE background model and the effects of this improvement on the global fit quality.
A mechanical model for phase-separation in debris flow
Creators: name: Pudasaini, Shiva P.
name: Fischer, Jan-Thomas
Publisher: name: arXiv
Year: 2016
Subjects: subject: Geophysics (physics.geo-ph)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Understanding the physics of phase-separation between solid and fluid phases as a mixture mass moves down slope is a long-standing challenge. Here, we propose an extension of the two phase mass flow model (Pudasaini, 2012) by including a new mechanism, called separation-flux, that leads to strong phase-separation in avalanche and debris flows while balancing the enhanced solid flux with the reduced fluid flux. The separation flux mechanism is capable of describing the dynamically evolving phase-separation and levee formation in a multi-phase, geometrically three-dimensional debris flow. These are often observed phenomena in natural debris flows and industrial processes that involve the transportation of particulate solid-fluid mixture material. The novel separation-flux model includes several dominant physical and mechanical aspects such as pressure gradients, volume fractions of solid and fluid phases and their gradients, shear-rates, flow depth, material friction, viscosity, material densities, topographic constraints, grain size, etc. Due to the inherent separation mechanism, as the mass moves down slope, more and more solid particles are transported to the front and the sides, resulting in solid-rich and mechanically strong frontal surge head, and lateral levees followed by a weaker tail largely consisting of viscous fluid. The primary frontal solid-rich surge head followed by secondary fluid-rich surges is the consequence of phase-separation. Such typical and dominant phase-separation phenomena are revealed for two-phase debris flow simulations. Finally, changes in flow composition, that are explicitly considered by the new modelling approach, result in significant changes of impact pressure estimates. These are highly important in hazard assessment and mitigation planning and highlight the application potential of the new approach.
Gallup Poll # 1958-0595: Education/UN Emergency Force
Creators: name: Gallup
Publisher: name: Roper Center for Public Opinion Research
Year: 2008

description: Dwight Eisenhower job performance (2); problems in schools (2); lengthening school year (1); English vs. American teaching method (1); educating teachers (2); reading (1); educational satisfaction (3); partisan opinions (1); United Nations Emergency Force (4); ideal president (9); newspapers (6); 1960 presidential candidates (3).
Development and Preliminary Validation of a Scale to Measure Sexual Violence Awareness using the Rasch Model
Creators: name: Folastri, Sisca
name: Hambali, IM
name: Ramli, M.
name: Akbar, Sa`'Dun
name: Sofyan, Afriyadi
Publisher: name: Psychology Hub
Year: 2023

description: This study develops a sexual violence awareness scale (ID-SVAS) using the Rasch Model, as well as assessing its validity and reliability. This developed scale was tried out on 1022 respondents consisting of students, lecturers, and college employees. In this study, the Rasch Model was used to measure the psychometric properties of the 14 items of the SVA scale through WINSTEPS 3.73. Our analysis results indicate that the developed sexual violence awareness measurement tool has good validity and reliability. Therefore, this scale be relied upon to measure sexual violence awareness experienced by respondents. This research is expected to present significant impacts in developing an accurate and reliable measurement tool to measure sexual violence awareness among university students in Indonesia, designing educational programs and social campaigns to increase sexual violence awareness.
description: Psychology Hub, Vol. 40 No. 3 (2023)
Gallup Poll # 1958-0597: Russia/Politics
Creators: name: Gallup
Publisher: name: Roper Center for Public Opinion Research
Year: 2004

description: Eisenhower job performance (1); favor/oppose summit meeting between Eisenhower and Khrushchev (1); where would like to have meeting between Russia and the U.S. (1); present state of business in U.S. (4); which political party more likely to keep U.S. out of World War III (1); prices of most things will be higher /lower/same six months from now (1); 1960 Democratic presidential candidates (2); Senator John Kennedy vs. Adlai Stevenson (1); Vice President Nixon vs. Adlai Stevenson (2); Vice President Nixon vs. Senator John Kennedy (2); 1956 presidential election (1); own a car (1).
Gallup Poll # 817
Creators: name: Gallup
Publisher: name: Roper Center for Public Opinion Research
Year: 2006

description: Richard Nixon job performance (1); change in political campaigns (10); limiting money spent on campaigns (1); Democratic candidate for 1972 Presidential election (2); Richard Nixon vs. Edmund Muskie vs. George Wallace (2); Richard Nixon vs. John Lindsay vs. George Wallace (2); France and Soviet Union (3); West Germany and Soviet union (1); conflicts that could threaten world peace (1); religious affiliation (3); 1968 presidential election (1).
Quantum transport in quasi-periodic lattice systems in presence of Büttiker probes
Creators: name: Saha, Madhumita
name: Venkatesh, B. Prasanna
name: Agarwalla, Bijay Kumar
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quasi-periodic lattice systems offer diverse transport properties. In this work, we investigate the environment induced effects on transport properties for quasi-periodic systems, namely the one-dimensional Aubry-André-Harper (AAH) lattice chain and its generalized version (GAAH) by considering the Büttiker probe approach. We first consider voltage probe situation and study the electrical conductance properties in the linear response regime. At zero temperature, we observe enhancement in conductance at all the no-transport regimes, located both inside and outside of the band of the original system, for small probe coupling strength $γ$ with a power-law scaling $γ^4$. Whereas, for large probe coupling strengths, the conductance at all Fermi energies is the same and decays as a power-law with scaling $1/γ^4$. This particular scaling survives even in the finite-temperature limit. Interestingly, this scaling result is different from the one recently predicted following the local Lindblad master equation approach. The transport eventually becomes diffusive for all energy ranges and in all regimes of the original model for a sufficiently strong coupling with the probes. We further extend our study and consider voltage-temperature probes to analyze the thermoelectric performance of the chain in terms of the figure of merit. We also demonstrate the validity of two recently obtained bounds on thermoelectric efficiency that are tighter than the seminal Carnot bound and express the same in terms of the Onsager's transport coefficients.
Sonnenfleckenzeichnung Nr. 39.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 16.02.1966, erstellt von Sergio Cortesi, Sonnenobservatorium Specola Solare Ticinese in Locarno
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 1966

description: Bleistiftzeichnung mit Tinte und Farbstift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf dem Vordruck der Eidgenössischen Sternwarte Zürich. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert
description: ETH-Bibliothek
Quantum simulations of neutral water clusters and singly-charged water cluster anions
Creators: name: Gijón, Alfonso
name: Hernández, Eduardo R.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Atomic and Molecular Clusters (physics.atm-clus)
subject: FOS: Physical sciences

description: We report a computational study of the structural and energetic properties of water clustersand singly-charged water cluster anions containing from 20 to 573 water molecules. We have used both a classical and a quantum description of the molecular degrees of freedom. Water intra and inter-molecular interactions have been modelled through the SPC/F model, while the water-excess electron interaction has been described via the well-known Turi-Borgis potential. We find that in general the quantum effects of the water degrees of freedom are small, but they do influence the cluster-size at which the excess electron stabilises inside the cluster, which occurs at smaller cluster sizes when quantum effects are taken into consideration.
Gallup Poll # 1244G
Creators: name: Gallup
Publisher: name: Roper Center for Public Opinion Research
Year: 1985

description: Likelihood of voting; 1984 Presidential election; Reagan/ Bush vs. Mondale/Ferraro; Reagan/Mondale better at: keeping out of war, prosperity; Presidential debates: viewing, for/against Reagan/Mondale, importance; effect of Ferraro; child rearing: parents' main fault, responsibility; Congressional election: Republicans/Democrats; Reagan vs. Kennedy; how often home to watch TV/listen to radio; occupation self/chief wage earner; responsibility financial decisions; labor union membership; Reagan vs. Hart; TV viewing with children: amount shows; Ronald Reagan's performance; importance of religion.
A class of cyclotomic linear codes and their generalized Hamming weights
Creators: name: Li, Fei
Publisher: name: arXiv
Year: 2017
Subjects: subject: Information Theory (cs.IT)
subject: Number Theory (math.NT)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics
subject: 94B05, 11T22, 11T23

description: Firstly, we give a formula on the generalized Hamming weight of linear codes constructed generically by defining sets. Secondly, by choosing properly the defining set we obtain a class of cyclotomic linear codes and then present two alternative formulas to calculate their generalized Hamming weights. Lastly, we determine their weight distribution and generalized Hamming weights partially. Especially, we solved the generalized Hamming weights completely in one case.
description: 9
Maximum and records of random walks with stochastic resetting
Creators: name: Godrèche, Claude
name: Luck, Jean-Marc
Publisher: name: arXiv
Year: 2022
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Probability (math.PR)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We revisit the statistics of extremes and records of symmetric random walks with stochastic resetting, extending earlier studies in several directions. We put forward a diffusive scaling regime (symmetric step length distribution with finite variance, weak resetting probability) where the maximum of the walk and the number of its records up to discrete time $n$ become asymptotically proportional to each other for single typical trajectories. Their distributions obey scaling laws ruled by a common two-parameter scaling function, interpolating between a half-Gaussian and a Gumbel law. The exact solution of the problem for the symmetric exponential step length distribution and for the simple Polya lattice walk, as well as a heuristic analysis of other distributions, allow a quantitative study of several facets of the statistics of extremes and records beyond the diffusive scaling regime.
description: 36 pages, 6 figures
Asphericity of groups defined by graphs
Creators: name: Bereznyuk, Vadim
Publisher: name: arXiv
Year: 2017
Subjects: subject: Group Theory (math.GR)
subject: FOS: Mathematics

description: A graph $Γ$ labelled by a set $S$ defines a group $G(Γ)$ whose generators are the set of labels $S$ and whose relations are all words which can be read on closed paths of this graph. We introduce the notion of aspherical graph and prove that such a graph defines an aspherical group presentation. This result generalizes a theorem of Dominik Gruber on graphs satisfying graphical $C(6)$-condition and also allows to get new graphical conditions of asphericity analogous to some classical conditions.
Lucilina Dall 1882
Creators: name: Dell'Angelo, Bruno
name: Landau, Bernard M.
name: Sosso, Maurizio
name: Taviani, Marco
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Mollusca
Polyplacophora
Chitonida
Chitonidae
Lucilina

description: Genus Lucilina Dall, 1882
Type species. Chiton confossus Gould, 1846 (= Chiton lamellosus Quoy & Gaimard, 1835), by subsequent designation (Pilsbry 1893).
Remarks. Following the suggestions of some authors (e.g., Strack 2003; Schwabe 2004, 2006; Schwabe et al. 2008; Schwabe & Pittman 2014), the genus Lucilina is here used at full genus level, and not as a subgenus of Tonicia Gray, 1847. The species of Tonicia are geographically restricted to the South Eastern Pacific region of Latin America with a single species in the Caribbean, while members of Lucilina are widespread throughout the tropical Indo-Pacific.
Lucilina is well represented in the Indian Ocean by six species, L. sueziensis (Reeve, 1847), L. perligera Thiele, 1909, L. pectinoides (Sykes, 1903), L. ceylonica (Leloup, 1936), L. carnosa (Kaas, 1979) and L. indica (Leloup, 1981), of which only the first two are known from the Red Sea.
Distribution. Widespread in the Indian Ocean, the Indo-Pacific, Australia, the Central Pacific Ocean and Japan. The fossil record extends back to the middle Oligocene of France, Aquitaine Basin (Dell’Angelo et al. 2018a), the Neogene of west Pacific islands (Ladd 1966; Schwabe et al. 2008) and the Pleistocene of the Red Sea (Issel 1869).
description: Published as part of Dell'Angelo, Bruno, Landau, Bernard M., Sosso, Maurizio & Taviani, Marco, 2020, Late Pleistocene Red Sea Mollusca: 1. Polyplacophora, pp. 401-449 in Zootaxa 4772 (3) on page 415, DOI: 10.11646/zootaxa.4772.3.1, http://zenodo.org/record/3819654
Convolutional neural networks as an alternative to Bayesian retrievals
Creators: name: Martinez, Francisco Ardevol
name: Min, Michiel
name: Kamp, Inga
name: Palmer, Paul I.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Machine Learning (cs.LG)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Exoplanet observations are currently analysed with Bayesian retrieval techniques. Due to the computational load of the models used, a compromise is needed between model complexity and computing time. Analysis of data from future facilities, will need more complex models which will increase the computational load of retrievals, prompting the search for a faster approach for interpreting exoplanet observations. Our goal is to compare machine learning retrievals of exoplanet transmission spectra with nested sampling, and understand if machine learning can be as reliable as Bayesian retrievals for a statistically significant sample of spectra while being orders of magnitude faster. We generate grids of synthetic transmission spectra and their corresponding planetary and atmospheric parameters, one using free chemistry models, and the other using equilibrium chemistry models. Each grid is subsequently rebinned to simulate both HST/WFC3 and JWST/NIRSpec observations, yielding four datasets in total. Convolutional neural networks (CNNs) are trained with each of the datasets. We perform retrievals on a 1,000 simulated observations for each combination of model type and instrument with nested sampling and machine learning. We also use both methods to perform retrievals on real WFC3 transmission spectra. Finally, we test how robust machine learning and nested sampling are against incorrect assumptions in our models. CNNs reach a lower coefficient of determination between predicted and true values of the parameters. Nested sampling underestimates the uncertainty in ~8% of retrievals, whereas CNNs estimate them correctly. For real WFC3 observations, nested sampling and machine learning agree within $2σ$ for ~86% of spectra. When doing retrievals with incorrect assumptions, nested sampling underestimates the uncertainty in ~12% to ~41% of cases, whereas this is always below ~10% for the CNN.
description: Accepted for publication in A&A
A $\mathbb{Z}_{2}$-Topological Index as a $\mathbb{Z}_{2}$-State Index
Creators: name: Aza, N. J. B.
name: Müssnich, L. C. P. A. M.
name: Reyes-Lega, A. F.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mathematical Physics (math-ph)
subject: Operator Algebras (math.OA)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: Within the setting of infinite dimensional self-dual $\mathrm{CAR}$ $C^{*}$-algebras describing fermions in the $\mathbb{Z}^{d}$-lattice, we depart from the well-known Araki-Evans $σ(P_{1},P_{2})$ $\mathbb{Z}_{2}$-index for quasi-free fermion states and rewrite it in terms of states, rather than in terms of basis projections. Furthermore, we reformulate results which relate equivalences of Fock representations with the index parity into results which relate equivalences of GNS representations and the associated index parity.
description: Contribution to ICMP Proceedings, 2-7 August 2021, Geneva, Switzerland
Quivers, Lattice Gauge Theories and Fractons
Creators: name: Franco, Sebastian
name: Rodriguez-Gomez, Diego
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We argue that quiver gauge theories with $SU(N)$ gauge groups give rise to lattice gauge theories with matter possessing fractonic properties, where the lattice is the quiver itself. This idea extends a recent proposal by Razamat. This class of theories exhibit a $\mathbb{Z}_N$ 1-form global symmetry that can be used to classify their phases. The order parameter of this transition is the expectation value of Wilson loops, which correspond to mesonic operators in the underlying quiver gauge theory. We discuss how this perspective naturally fits with the deconstruction of a higher dimensional theory.
description: 6 pages, 3 figures
Constraining heavy axion-like particles by energy deposition in Globular Cluster stars
Creators: name: Lucente, Giuseppe
name: Straniero, Oscar
name: Carenza, Pierluca
name: Giannotti, Maurizio
name: Mirizzi, Alessandro
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Heavy axion-like particles (ALPs), with masses up to a few 100 keV and coupled with photons can be efficiently produced in stellar plasmas, contributing to a significant energy-loss. This argument has been applied to helium burning stars in Globular Clusters (GCs) to obtain stringent bounds on the ALP-photon coupling $g_{aγ}$. However, for sufficiently large values of the ALP mass and coupling to photons, one should expect a significant fraction of ALPs to decay inside the star. These ALPs do not contribute to the energy loss but rather lead to an efficient energy transfer inside the star. We present a new ballistic recipe that covers both the energy-loss and energy-transfer regimes and we perform the first dedicated simulation of GC stars including the ALP energy transfer. This argument allows us to constrain ALPs with $m_a \lesssim 0.4$ MeV and $g_{aγ} \simeq 10^{-5}$ GeV$^{-1}$, probing a section of the ALP parameter space informally known as "cosmological triangle". This region is particularly interesting since it has been excluded only using standard cosmological arguments that can be evaded in nonstandard scenarios.
description: 13 pages, 7 figures. Typos corrected. More details on the ballistic model and the constraining method added
Low-Energy Excitations of Skyrmion Crystals in a Centrosymmetric Kondo-Lattice Magnet: Decoupled Spin-Charge Excitations and Nonreciprocity
Creators: name: Eto, Rintaro
name: Pohle, Rico
name: Mochizuki, Masahito
Publisher: name: arXiv
Year: 2022
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We theoretically study spin and charge excitations of skyrmion crystals stabilized by conduction-electron-mediated magnetic interactions via spin-charge coupling in a centrosymmetric Kondo-lattice model by large-scale spin-dynamics simulations combined with the kernel polynomial method. We reveal clear segregation of spin and charge excitation channels and nonreciprocal nature of the spin excitations governed by the Fermi-surface geometry, which are unique to the skyrmion crystals in centrosymmetric itinerant hosts and can be a source of novel physical phenomena.
description: 7 pages, 4 figures
Solving Nuclear Structure Problems with the Adaptive Variational Quantum Algorithm
Creators: name: Romero, A. M.
name: Engel, J.
name: Tang, Ho Lun
name: Economou, Sophia E.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Nuclear Theory (nucl-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We use the Lipkin-Meshkov-Glick (LMG) model and the valence-space nuclear shell model to examine the likely performance of variational quantum eigensolvers in nuclear-structure theory. The LMG model exhibits both a phase transition and spontaneous symmetry breaking at the mean-field level in one of the phases, features that characterize collective dynamics in medium-mass and heavy nuclei. We show that with appropriate modifications, the ADAPT-VQE algorithm, a particularly flexible and accurate variational approach, is not troubled by these complications. We treat up to 12 particles and show that the number of quantum operations needed to approach the ground-state energy scales linearly with the number of qubits. We find similar scaling when the algorithm is applied to the nuclear shell model with realistic interactions in the $sd$ and $pf$ shells. Although most of these simulations contain no noise, we use a noise model from real IBM hardware to show that for the LMG model with four particles, weak noise has no effect on the efficiency of the algorithm.
description: 10 pages, 7 figures. Identical in content to published version. Now incudes analysis of noise
Stability of Granular Tunnel
Creators: name: Yuliza, Elfi
name: Amalia, Nadya
name: Rahmayanti, Handika Dany
name: Munir, Rahmawati
name: Munir, Muhammad Miftahul
name: Khairurrijal, Khairurrijal
name: Abdullah, Mikrajuddin
Publisher: name: arXiv
Year: 2018
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We demonstrated the stability of tunnels made of granular matters is strongly dependent on the grain size, tunnel diameter, and water content in the granules. Larger tunnel radius, larger grain size, and too much water content tend to destabilize the tunnel. We also develop a model to describe such findings. We identified a phase diagram of stability which greatly controlled by granular bond order. For granular bond order of larger than unity, we can always made a stable tunnel. However, for granular bond order of less than unity, we obtain a general expression for maximum tunnel thickness that can be made. To best of our knowledge, this is the first exploration regarding the granular tunnel stability.
description: 13 pages, 6 Figures, and 1 Table
Weight hierarchies of a family of linear codes associated with degenerate quadratic forms
Creators: name: Li, Fei
name: Li, Xiumei
Publisher: name: arXiv
Year: 2018
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences
subject: 94B05, 11E04, 11T71

description: We restrict a degenerate quadratic form $f$ over a finite field of odd characteristic to subspaces. Thus, a quotient space related to $f$ is introduced. Then we get a non-degenerate quadratic form induced by $f$ over the quotient space. Some related results on the subspaces and quotient space are obtained. Based on this, we solve the weight hierarchies of a family of linear codes related to $f.$
description: 12 pages
Sonnenfleckenzeichnung Nr. 84.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 10.04.1966, erstellt von Sergio Cortesi, Sonnenobservatorium Specola Solare Ticinese in Locarno
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 1966

description: Bleistiftzeichnung mit Tinte und Farbstift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf dem Vordruck der Eidgenössischen Sternwarte Zürich. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert
description: ETH-Bibliothek
Reflexões sobre Oncologia Pediátrica
Creators: name: Chagas, Mário
name: Norton, Lucilía
name: Batista, Rui
Publisher: name: Portuguese Journal of Pediatrics
Year: 2014

description: Introdução:

Este artigo tem por objectivo analisar a situação actual da subespecialidadede Oncologia Pediátrica no nosso País e reflectirsobre o seu futuro, tanto no âmbito assistencial, como noformativo.

Destina-se a todos os leitores da Acta Pediátrica Portuguesa e,muito especialmente, aos que têm responsabilidades docentese de planificação dos cuidados de saúde em Pediatria.
description: Portuguese Journal of Pediatrics, Vol 37 No 2 (2006)
CBS News/New York Times Poll: Barack Obama/Race Relations
Creators: name: CBS News
name: New York Times
Publisher: name: Roper Center for Public Opinion Research
Year: 2010

description: Barack Obama job performance (3); direction of country (1); important problem (1); Obama handling issues (4); Congressional job performance (1); economic conditions (2); Barack Obama (12); Obama making changes (13); Republicans and Obama (1); Joe Biden job performance (1); Michelle Obama (2); George W. Bush job performance (1); gay marriage (1); illegal immigration (1); American health care (1); American race relations (4); employment/job security (2); employed blacks (1); domestic issues (1); aggressive interrogation/torture (3); Iraq (1); Afghanistan (2); negotiate with Taliban (2); Iran (1); North Korea (1); Guantanamo Bay (1); Cuba (2); war veterans (1); assault weapons/guns (2); Dick Cheney (1); affects of recession (4); sufficient income (1); news source (1); motherhood (4).
CBS News/New York Times Poll: Health Care Reform/War on Terrorism
Creators: name: CBS News
name: New York Times
Publisher: name: Roper Center for Public Opinion Research
Year: 2010

description: Barack Obama job performance (1); direction of country (1); important problem (1); Barack Obama handling issues (4); Congressional parties job performance (2); economic conditions (2); Obama vs. Republicans on economic decisions (1); economic stimulus package (3); Obama raising taxes (1); Obama's public appearances/speeches (1); Michelle Obama (1); health care changes (1); health care quality (1); health care costs (1); cost of fixing healthcare (1); increased healthcare vs. budget deficit (1); increased health care vs. reducing health care cost (1); government health insurance (5); Obama explaining health care proposals (2); Republicans explaining health care proposals (1); Obama vs. republicans on health care reform (3); knowledge of health care proposals (2); likes/dislikes about health care reform (2); support Obama health care proposals (1); Obama describing health care system (2); future health care with changes (1); health care proposals providing adequate coverage (1); health care changes affecting respondent (5); health care changes affecting Medicare (1); health care changes providing for illegal immigrants (1); healthcare reform including Eldercare panels (1); fear of losing coverage (1); government requiring insurance (1); government offered insurance (1); health care changes without public option (1); government limiting insurance costs (1); insurance companies canceling pre-existing exclusions (1); limiting malpractice awards (1); increased income taxes for 250K wage earners (1); moral responsibility to provide insurance (1); Democrats handling health care bill (1); reason for republican opposition to healthcare bill (1); Democratic support for healthcare bill (1); current health care coverage (3); confidence in insurance (1); possessing large insurance claims (3); War in iraq (2); War in Afghanistan (5); troops in Afghanistan (2); Afghanistan war affecting terrorism (2); texting while driving (1).
Los Angeles Times Poll: Gasoline Shortage/1980 Presidential Election/Russia
Creators: name: Los Angeles Times
Publisher: name: Roper Center for Public Opinion Research
Year: 2009

description: News source (1); Jerry Brown traveling with Linda Ronstadt (1); Edward Kennedy running for president (1); Kennedy's national health insurance plan (1); happenings in area (9); gasoline shortage/prices (6); removing oil price controls (1); oil tax (1); power to ration gas (1); Democratic nominee (2); Republican nominee (2); response to energy situation (1); nuclear power plants (1); Three Mile Power plant accident (2); Jimmy Carter job performance (3); Russia adhering to Strategic Arms Limitation Treaty (SALT) (2); benefit of SALT (1); Jerry Brown job performance (1); Russia vs. United States on military strength (1); Jimmy Carter vs. Ronald Reagan (1); Jimmy Carter vs. John Connally (1); Edward Kennedy vs. Ronald Reagan (1); Edward Kennedy vs. John Connally (1); Jerry Brown vs. Ronald Reagan (1); Jerry Brown vs. John Connally (1); Mexican immigration and United States (4); opinion of people in the news (10); political issues (2); political idealism (2); voter registration (1); describing candidates (6); economic conditions (1); reducing government spending (4); constitutional convention to change budget (1).
Maximal Kerr de Sitter spacetimes
Creators: name: Borthwick, Jack
Publisher: name: arXiv
Year: 2018
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: In this paper, we propose a survey of the basic geometric properties of Carters Kerr-de Sitter solution to Einsteins equation with positive cosmological constant. In particular, we give simple characterisations of the Kerr-de Sitter analogs of fast, slow and extreme Kerr spacetime and conclude with a discussion on maximal analytical extensions in each of these cases.
description: Corrected typos
Hölder Error Bounds and Hölder Calmness with Applications to Convex Semi-Infinite Optimization
Creators: name: Kruger, Alexander
name: López, Marco
name: Yang, Xiaoqi
name: Zhu, Jiangxing
Publisher: name: arXiv
Year: 2018
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics
subject: 49J53, 90C25, 90C31, 90C34

description: Using techniques of variational analysis, necessary and sufficient subdifferential conditions for Hölder error bounds are investigated and some new estimates for the corresponding modulus are obtained. As an application, we consider the setting of convex semi-infinite optimization and give a characterization of the Hölder calmness of the argmin mapping in terms of the level set mapping (with respect to the objective function) and a special supremum function. We also estimate the Hölder calmness modulus of the argmin mapping in the framework of linear programming.
description: 25 pages
Los Angeles Times Poll: Presidential Candidates
Creators: name: Los Angeles Times
Publisher: name: Roper Center for Public Opinion Research
Year: 2008

description: Jimmy Cartel (6); Jimmy Cartel's actions concerning Iran (2); military force when Americans are held hostage (7); Shah of Iran (3); Howard Baker (3); Jerry Brown (2); George Bush (2); John Connally (3); Edward Kennedy (7); Ayatollah Khomaini (1); Ronald Reagan (3); Democratic candidate for President in 1980 (3); Republican candidate for President in 1980 (1); labor union (1); groups respondent feels close to (2); qualities missing in candidates (1); political parties (2); Chappaquiddick Island incident (3); political views (1); political involvement (6).
An affine generalization of evacuation
Creators: name: Chmutov, M.
name: Frieden, G.
name: Kim, D.
name: Lewis, J. B.
name: Yudovina, E.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: We establish the existence of an involution on tabloids that is analogous to Schutzenberger's evacuation map on standard Young tableaux. We find that the number of its fixed points is given by evaluating a certain Green's polynomial at $q = -1$, and satisfies a "domino-like" recurrence relation.
description: 32 pages, 7 figures
Pew Research Center Poll: Media Consumption
Creators: name: Pew Research Center
Publisher: name: Roper Center for Public Opinion Research
Year: 1996

description: Clinton job performance(1); Republicans in Congress(1); newspapers(7); television programs(14); radio(5); attention paid to recent news stories(8); 1996 election(2); government(4); personal finances(1); homosexuality(1); childhood experiences(8); magazines(3); network news(5); local news(4); name of the Speaker of the House(1); name party in control of the House(1); amount of minimum wage(1); names of the countries Clinton has visited(1); attention paid to different types of news(14); source of news on the 1996 election(7); favorability of different people and organizations(12); media bias in the 1996 election(1); computers(2); on-line information(2); cable television(2); religious preference(1); born-again Christianity(1).
Pew Research Center Poll: Pre-Election Survey
Creators: name: Pew Research Center
Publisher: name: Roper Center for Public Opinion Research
Year: 2009

description: 1996 presidential election (2); interest in politics (1); voting frequency (1); Bill Clinton vs Bob Dole (3); 1996 Congressional election (1); party preference (1); Clinton vs Dole vs Perot (6); views about certain issues (12); plans to vote in election (3); opinion of presidential candidates (3); descriptions of Clinton and Dole (9); biggest factor in how to vote for Congress (1); control of Congress (1); congressional representatives (1); vote only for Democratic candidates (1); vote only for Republican candidates (1); attending religious services (4); financial concerns (6); important issues (1); Medicare (1); cutting federal income tax (2); teenage drug use (1); organizations that have influence in election (4); government and public affairs (1).
Pew Internet & American Life Project Poll: Spyware Survey
Creators: name: Pew Research Center
Publisher: name: Roper Center for Public Opinion Research
Year: 2010

description: Direction of country (1); trusting people (1); point of accessing Internet (2); frequency of Internet use (4); discontinuing use of Internet (3); how long been an Internet user (3); familiarity with Internet terms (8); user agreements (2); online activities (13); preventing viruses and spyware (1); type of connection (1); ownership of software programs (12); experience with computer problems (17); obtaining spyware (1); attitudes towards spyware (1); obtaining adware (1); attitudes towards adware (2); effects of adware (6); avoiding adware (6); household use of computer (1); installing software (1); maintaining home computer (1); setting up virus protection (4); firewall protection (1).
Feasibility of detecting and characterizing embedded low-mass giant planets in gaps in the VIS/NIR wavelength range
Creators: name: Krieger, A.
name: Wolf, S.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: High-contrast imaging in the visible and near-infrared (VIS/NIR) has revealed the presence of a plethora of substructures in circumstellar disks (CSDs). One of the most commonly observed substructures are concentric gaps that may hint at the presence of embedded forming planets. However, direct detections of them are rare, and thus ambiguity regarding the origin of most gap features remains. The aim of this study is to investigate the capabilities of high-contrast VIS/NIR imaging of directly detecting and characterizing low-mass giant planets in gaps. To this end, a grid of models of protoplanetary disks was generated. The models include a central T Tauri star surrounded by a face-on CSD harboring an accreting planet, which itself is surrounded by a circumplanetary disk (CPD) and carves a gap. We use the Monte Carlo radiative transfer code Mol3D to generate temperature distributions and synthetic observations. Based on these simulations, we measured the impact the planet and its CPD have on contrast curves and quantified the impact of the observing wavelength and of five key parameters on the determined signal strength. Then, we applied a detection criterion on our results and assess the capabilities of SPHERE/VLT of detecting the embedded planets. We find that a part of the investigated parameter space includes detectable planets, and we elaborate on the implications of a non-detection. Furthermore, we analyze the potential loss of valuable information by the use of a too small coronagraphic mask. However, we find this outcome to be very unlikely. Finally, within the VIS/NIR we identify for each of the investigated basic properties of the planets and the disks the most promising observing wavelengths that enable us to distinguish between different underlying parameter values. We find, that the detectability and the characterization often benefit from different observing wavelengths.
description: Accepted for publication in A&A, 30 pages, 13 figures, 8 tables
Boundary fluctuation dynamics of a phase-separated domain in planar geometry
Creators: name: Destainville, Nicolas
name: Coulonges, Nelly
Publisher: name: arXiv
Year: 2022
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Using theories of phase ordering kinetics and of renormalization group, we derive analytically the relaxation times of the long wave-length fluctuations of a phase-separated domain boundary in the vicinity of (and below) the critical temperature, in the planar Ising universality class. For a conserved order parameter, the relaxation time grows like $Λ^3$ at wave-length $Λ$ and can be expressed in terms of parameters relevant at the microscopic scale: lattice spacing, bulk diffusion coefficient of the minority phase, and temperature. These results are supported by numerical simulations of 2D Ising models, enabling in addition to calculate the non-universal numerical prefactor. We discuss the applications of these findings to the determination of the real time-scale associated with elementary Monte Carlo moves from the measurement of long wave-length relaxation times on experimental systems or Molecular Dynamics simulations.
description: 11 pages, 2 figures, accepted for publication in Physical Review E
The Radius of Metric Subregularity
Creators: name: Dontchev, Asen L.
name: Gfrerer, Helmut
name: Kruger, Alexander Y.
name: Outrata, Jiří V.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics
subject: 49J52, 49J53, 49K40, 90C31

description: There is a basic paradigm, called here the radius of well-posedness, which quantifies the "distance" from a given well-posed problem to the set of ill-posed problems of the same kind. In variational analysis, well-posedness is often understood as a regularity property, which is usually employed to measure the effect of perturbations and approximations of a problem on its solutions. In this paper we focus on evaluating the radius of the property of metric subregularity which, in contrast to its siblings, metric regularity, strong regularity and strong subregularity, exhibits a more complicated behavior under various perturbations. We consider three kinds of perturbations: by Lipschitz continuous functions, by semismooth functions, and by smooth functions, obtaining different expressions/bounds for the radius of subregularity, which involve generalized derivatives of set-valued mappings. We also obtain different expressions when using either Frobenius or Euclidean norm to measure the radius. As an application, we evaluate the radius of subregularity of a general constraint system. Examples illustrate the theoretical findings.
description: 20 pages