cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Initial State Radiation: A success story
Creators: name: Kluge, W.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The investigation of events with Initial State Radiation (ISR) and subsequent Radiative Return has become an impressively successful and guiding tool in low and intermediate energy hadron physics with electron positron colliders: it allows to measure hadronic cross sections and the ratio R from threshold up to the maximum energy of the colliders running at fixed energy, to clarify reaction mechanisms and reveal substructures (intermediate states and their decay mechanisms) and to search for new highly excited mesonic states with J^{PC} = 1^{--}. While being discussed since the sixties-seventies ISR became a powerful tool for experimentalists only with the development of EVA-PHOKHARA, a Monte Carlo generator developed over almost 10 years, while increasing its complexity, which is user friendly, flexible and easy to implement into the software of existing detectors.
description: 6 pages, 2 figures, PHIPSI08 conference
Il mondo animale nell'opera di Lucrezio. Poikilia del genere didascalico (alcuni mirabilia del VI libro)
Creators: name: Paolucci, Paola
Publisher: name: Annali Online  Lettere - Ferrara
Year: 2012

description: As Lucretius' debt to Callimachus' art of poetry is already known, as  moreover the didactic poetry admits various stylistic means, we are  entitled to investigate in which way Lucretius realizes in his De rerum natura the Challimachus' principle called poikilia. In order to illustrate this principle, we especially pay attention to some aspects of the paradoxography concerning Averna loca in Lucretius' De rerum natura VI 739 ff. This investigation permits to individuate some Hellenistic  sources of the piece (Antigonus Charistius, Callimachus and Euphorio).
description: Annali Online  Lettere - Ferrara, Volume Speciale, supp. II 2 (2007)
High redshift X-ray galaxy clusters. I. The impact of point sources on the cluster properties
Creators: name: Branchesi, M.
name: Gioia, I. M.
name: Fanti, C.
name: Fanti, R.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The current generation of X-ray observatories like Chandra allows studies with very fine spatial details. It is now possible to resolve X-ray point sources projected into the cluster diffuse emission and exclude them from the analysis to estimate the ``correct'' X-ray observables. In order to verify the incidence of point sources on the cluster thermal emission and to evaluate the impact of their non-thermal emission on the determination of cluster properties, we used a sample of 18 high-z (0.25 < z < 1.01) clusters from the Chandra archive. We performed a detailed analysis of the cluster properties and compared the changes observed in the X-ray observables, like temperature and luminosity or their inter-relation, when one keeps the point sources in the analysis. The point sources projected into the cluster extended emission affect the estimates of cluster temperature or luminosity considerably (up to 13% and 17% respectively). These percentages become even larger for clusters with z > 0.7 where temperature and luminosity increase up to 24% and 22%, respectively. Thus the point sources should be removed to correctly estimate the cluster properties. However the inclusion of the point sources does not impact significantly the slope and normalization of the L-T relationship since for each cluster the correction to be applied to T and L produces a moderate shift in the L-T plane almost parallel to the best-fit of the ``correct'' L-T relation.
description: 16 pages, 18 postscript figures. Accepted for publication in Astronomy & Astrophysics
(Research) Data Service  @ Tampere University
Creators: name: Nykyri, Susanna
name: Näppilä, Turkka
Publisher: name: Zenodo
Year: 2019
Subjects: research data service
data service
research data management

description: Presentation held at Tampere University (TAU) & Technical University of Braunschweig (TUBS) joint data management services seminar in Tampere 28.5.2019. The seminar was part of seed funded TUT&TUBS data management services project (2018-2019).

* TUT= Tampere University of Technology. (Tampere University (TAU) is created in January 2019 by the merger of the University of Tampere and Tampere University of Technology, which are joining forces to create a new foundation-based university.)
Spectral Index in Curvaton Scenario
Creators: name: Huang, Qing-Guo
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: A red tilted primordial power spectrum is preferred by WMAP five-year data and a large positive local-type non-Gaussianity $f_{NL}$ might be observed as well. In this short note we find that a red tilted and large non-Gaussian primordial power spectrum cannot be naturally obtained in curvaton model, because $f_{NL}$ is related to the initial condition of inflation.
description: 12 pages; refs added
Ageing under stress and mechanical fragility of soft solids of laponite
Creators: name: Reddy, G. Ranjith K.
name: Joshi, Yogesh M
Publisher: name: arXiv
Year: 2008
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: In this work, we investigate the ageing behavior of soft glassy solids of aqueous suspension of laponite under shear flow. We observe that when an imposed time is normalized by a dominating relaxation time of the system, the rheological response at different ages shows superposition. Analysis of this behavior suggests that the structural evolution with age under a deformation field, as represented by the dependence of dominant relaxation mode on age, becomes weaker as the system becomes progressively less homogeneous due to enhanced attractive interactions caused by addition of salt. Creep-recovery behavior at same elastic modulus shows more viscous dissipation for a system having more salt, demonstrating increase in the mechanical fragility. This study shows that an increase in the concentration of salt, which enhances attractive interactions and causes greater inhomogeneity, leads to a state wherein the particles are held together by weaker interactions. This work leads to important insights into how microstructure affects the ageing dynamics. We discuss the observed behavior in the context of ageing in colloidal glasses and gels of aqueous suspension of laponite.
description: 15 pages, 3 figures
Global 21cm Absorption Signal from Superconducting Cosmic Strings
Creators: name: Thériault, Roxane
name: Mirocha, Jordan T.
name: Brandenberger, Robert
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Superconducting cosmic strings emit electromagnetic waves between the times of recombination and reionization. Hence, they have an effect on the global 21cm signal. We compute the resulting absorption features, focusing on strings with critical current, study their dependence on the string tension $μ$, and compare with observational results. For string tensions in the range of $G μ= 10^{-10}$, where $G$ is Newton's gravitational constant, there is an interesting amplification of the two characteristic absorption features, one during the cosmic dawn, $z \lesssim 30$, and the other during the cosmic dark age, $z \sim 80$, the former being comparable in amplitude to what was observed by the EDGES experiment.
description: 8 pages, 3 figures
Non-Sequential Neural Network for Simultaneous, Consistent Classification and Photometric Redshifts of OTELO Galaxies
Creators: name: de Diego, José A.
name: Nadolny, Jakub
name: Bongiovanni, Ángel
name: Cepa, Jordi
name: Lara-López, Maritza A.
name: Gallego, Jesús
name: Cerviño, Miguel
name: Sánchez-Porta, Miguel
name: González-Serrano, J. Ignacio
name: Alfaro, Emilio J.
name: Pović, Mirjana
name: García, Ana María Pérez
name: Martínez, Ricardo Pérez
name: Torres, Carmen P. Padilla
name: Cedrés, Bernabé
name: García-Aguilar, Diego
name: González, J. Jesús
name: González-Otero, Mauro
name: Navarro-Martínez, Rocío
name: Pintos-Castro, Irene
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Context. Computational techniques are essential for mining large databases produced in modern surveys with value-added products. Aims. This paper presents a machine learning procedure to carry out simultaneously galaxy morphological classification and photometric redshift estimates. Currently, only spectral energy distribution (SED) fitting has been used to obtain these results all at once. Methods. We used the ancillary data gathered in the OTELO catalog and designed a non-sequential neural network that accepts optical and near-infrared photometry as input. The network transfers the results of the morphological classification task to the redshift fitting process to ensure consistency between both procedures. Results. The results successfully recover the morphological classification and the redshifts of the test sample, reducing catastrophic redshift outliers produced by SED fitting and avoiding possible discrepancies between independent classification and redshift estimates. Our technique may be adapted to include galaxy images to improve the classification.
description: Astronomy and Astrophysics (A&A) accepted
Multifield DBI Inflation and Non-Gaussianities
Creators: name: Huang, Min-xin
name: Shiu, Gary
name: Underwood, Bret
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We analyze the trajectories for multifield DBI inflation, which can arise in brane inflation models, and show that the trajectories are the same as in typical slow roll inflation. We calculate the power spectrum and find that the higher derivative terms of the DBI action lead to a suppression of the contribution from the isocurvature perturbations. We also calculate the bispectrum generated by the isocurvature perturbation, and find that it leads to distinctive features.
description: 7 pages, 4 figures; v2. references added; v3. typos corrected, matches published version
Generalizations of the Lax-Milgram theorem
Creators: name: Drivaliaris, D.
name: Yannakakis, N.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 47B99; 35J60; 46B99; 47N20

description: We prove a linear and a nonlinear generalization of the Lax-Milgram theorem. In particular we give sufficient conditions for a real-valued function defined on the product of a reflexive Banach space and a normed space to represent all bounded linear functionals of the latter. We also give two applications to singular differential equations.
Frequentist and Bayesian measures of confidence via multiscale bootstrap for testing three regions
Creators: name: Shimodaira, Hidetoshi
Publisher: name: arXiv
Year: 2008
Subjects: subject: Methodology (stat.ME)
subject: Statistics Theory (math.ST)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: A new computation method of frequentist $p$-values and Bayesian posterior probabilities based on the bootstrap probability is discussed for the multivariate normal model with unknown expectation parameter vector. The null hypothesis is represented as an arbitrary-shaped region. We introduce new parametric models for the scaling-law of bootstrap probability so that the multiscale bootstrap method, which was designed for one-sided test, can also computes confidence measures of two-sided test, extending applicability to a wider class of hypotheses. Parameter estimation is improved by the two-step multiscale bootstrap and also by including higher-order terms. Model selection is important not only as a motivating application of our method, but also as an essential ingredient in the method. A compromise between frequentist and Bayesian is attempted by showing that the Bayesian posterior probability with an noninformative prior is interpreted as a frequentist $p$-value of ``zero-sided'' test.
On the global Hadamard parametrix in QFT and the signed squared geodesic distance defined in domains larger than convex normal neighbourhoods
Creators: name: Moretti, Valter
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We consider the global Hadamard condition and the notion of Hadamard parametrix whose use is pervasive in algebraic QFT in curved spacetime (see refences in the main text). We point out the existence of a technical problem in the literature concerning well-definedness of the global Hadamard parametrix in normal neighbourhoods of Cauchy surfaces. We discuss in particular the definition of the (signed) geodesic distance $σ$ and related structures in an open neighbourhood of the diagonal of $M\times M$ larger than $U\times U$, for a normal convex neighborhood $U$, where $(M,g)$ is a Riemannian or Lorentzian (smooth Hausdorff paracompact) manifold. We eventually propose a quite natural solution which slightly changes the original definition by B.S. Kay and R.M. Wald and relies upon some non-trivial consequences of the paracompactness property. The proposed re-formulation is in agreement with M.J. Radzikowski's microlocal version of the Hadamard condition.
description: 18 pages, no figures, title changed, references and comments added
Neural network surrogate of QuaLiKiz using JET experimental data to populate training space
Creators: name: Ho, Aaron
name: Citrin, Jonathan
name: Bourdelle, Clarisse
name: Camenen, Yann
name: Casson, Francis J.
name: van de Plassche, Karel L.
name: Weisen, Henri
name: Contributors, JET
Publisher: name: arXiv
Year: 2021
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: Within integrated tokamak plasma modelling, turbulent transport codes are typically the computational bottleneck limiting their routine use outside of post-discharge analysis. Neural network (NN) surrogates have been used to accelerate these calculations while retaining the desired accuracy of the physics-based models. This paper extends a previous NN model, known as QLKNN-hyper-10D, by incorporating the impact of impurities, plasma rotation and magnetic equilibrium effects. This is achieved by adding a light impurity fractional density ($n_{imp,light} / n_e$) and its normalized gradient, the normalized pressure gradient ($α$), the toroidal Mach number ($M_{tor}$) and the normalized toroidal flow velocity gradient. The input space was sampled based on experimental data from the JET tokamak to avoid the curse of dimensionality. The resulting networks, named QLKNN-jetexp-15D, show good agreement with the original QuaLiKiz model, both by comparing individual transport quantity predictions as well as comparing its impact within the integrated model, JINTRAC. The profile-averaged RMS of the integrated modelling simulations is <10% for each of the 5 scenarios tested. This is non-trivial given the potential numerical instabilities present within the highly nonlinear system of equations governing plasma transport, especially considering the novel addition of momentum flux predictions to the model proposed here. An evaluation of all 25 NN output quantities at one radial location takes $\sim$0.1 ms, $10^4$ times faster than the original QuaLiKiz model. Within the JINTRAC integrated modelling tests performed in this study, using QLKNN-jetexp-15D resulted in a speed increase of only 60 - 100 as other physics modules outside of turbulent transport become the bottleneck.
description: 34 pages, 24 figures, Physics of Plasmas
An asteroseismic study of the beta Cephei star theta Ophiuchi: constraints on global stellar parameters and core overshooting
Creators: name: Briquet, M.
name: Morel, T.
name: Thoul, A.
name: Scuflaire, R.
name: Miglio, A.
name: Montalban, J.
name: Dupret, M. -A.
name: Aerts, C.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a seismic study of the beta Cephei star theta Ophiuchi. Our analysis is based on the observation of one radial mode, one rotationally split l = 1 triplet and three components of a rotationally split l = 2 quintuplet for which the m-values were well identified by spectroscopy. We identify the radial mode as fundamental, the triplet as p_1 and the quintuplet as g_1. Our NLTE abundance analysis results in a metallicity and CNO abundances in full agreement with the most recent updated solar values. With X \in [0.71,0.7211] and Z \in [0.009,0.015], and using the Asplund et al. (2005) mixture but with a Ne abundance about 0.3 dex larger (Cunha et al. 2006), the matching of the three independent modes, enables us to deduce constrained ranges for the mass (M = 8.2 +/- 0.3 Msun) and central hydrogen abundance (X_c = 0.38 +/- 0.02) of theta Oph and to prove the occurrence of core overshooting (alpha_ov = 0.44 +/- 0.07). We also derive an equatorial rotation velocity of 29 +/- 7 km/s. Moreover, we show that the observed non-equidistance of the l=1 triplet can be reproduced by second order effects of rotation. Finally, we show that the observed rotational splitting of two modes cannot rule out a rigid rotation model.
description: Accepted for publication in Monthly Notices of the Royal Astronomical Society Main Journal on 2007-06-21, 8 pages, 4 figures
First M87 Event Horizon Telescope Results. VII. Polarization of the Ring
Creators: name: The Event Horizon Telescope Collaboration
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: In 2017 April, the Event Horizon Telescope (EHT) observed the near-horizon region around the supermassive black hole at the core of the M87 galaxy. These 1.3 mm wavelength observations revealed a compact asymmetric ring-like source morphology. This structure originates from synchrotron emission produced by relativistic plasma located in the immediate vicinity of the black hole. Here we present the corresponding linear-polarimetric EHT images of the center of M87. We find that only a part of the ring is significantly polarized. The resolved fractional linear polarization has a maximum located in the southwest part of the ring, where it rises to the level of about 15%. The polarization position angles are arranged in a nearly azimuthal pattern. We perform quantitative measurements of relevant polarimetric properties of the compact emission and find evidence for the temporal evolution of the polarized source structure over one week of EHT observations. The details of the polarimetric data reduction and calibration methodology are provided. We carry out the data analysis using multiple independent imaging and modeling techniques, each of which is validated against a suite of synthetic data sets. The gross polarimetric structure and its apparent evolution with time are insensitive to the method used to reconstruct the image. These polarimetric images carry information about the structure of the magnetic fields responsible for the synchrotron emission. Their physical interpretation is discussed in an accompanying publication.
description: 48 pages, 35 figures, published in The Astrophysical Journal Letters on March 24, 2021
Cosmological Cosmic Rays: Sharpening the Primordial Lithium Problem
Creators: name: Prodanovic, Tijana
name: Fields, Brian D.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Cosmic structure formation leads to large-scale shocked baryonic flows which are expected to produce a cosmological population of structure-formation cosmic rays (SFCRs). Interactions between SFCRs and ambient baryons will produce lithium isotopes via α+α\to ^{6,7}Li. This pre-Galactic (but non-primordial) lithium should contribute to the primordial 7Li measured in halo stars and must be subtracted in order to arrive to the true observed primordial lithium abundance. In this paper we point out that the recent halo star 6Li measurements can be used to place a strong constraint to the level of such contamination, because the exclusive astrophysical production of 6Li is from cosmic-ray interactions. We find that the putative 6Li plateau, if due to pre-Galactic cosmic-ray interactions, implies that SFCR-produced lithium represents Li_{SFCR}/Li_{plateau}\approx 15% of the observed elemental Li plateau. Taking the remaining plateau Li to be cosmological 7Li, we find a revised (and slightly worsened) discrepancy between the Li observations and Big Bang Nucleosynthesis predictions by a factor of ^7Li_{BBN}/^7Li_{plateau} \approx 3.7. Moreover, SFCRs would also contribute to the extragalactic gamma-ray background (EGRB) through neutral pion production. This gamma-ray production is tightly related to the amount of lithium produced by the same cosmic rays; the 6Li plateau limits the pre-Galactic (high-redshift) SFCR contribution to be at the level of I_{π_γSFCR}/I_{EGRB} < 5% of the currently observed EGRB.
description: 4 pages, accepted for publication in PRD
Michael Schwartz, Funktionäre mit Vergangenheit. Das Gründungspräsidium des Bundesverbandes der Vertriebenen und das „Dritte Reich“
Creators: name: Weber, Matthias
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2015

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 64 Nr. 1 (2015)
Astala's Conjecture on Distortion of Hausdorff Measures under Quasiconformal Maps in the Plane
Creators: name: Lacey, Michael T.
name: Sawyer, Eric T.
name: Uriarte-Tuero, Ignacio
Publisher: name: arXiv
Year: 2008
Subjects: subject: Complex Variables (math.CV)
subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 30C62, 35J15, 35J70

description: Let E be a compact set in the plane, g be a K-quasiconformal map, and let 0
description: Revised version; typos corrected
Quantum rattling of molecular hydrogen in clathrate hydrate nanocavities
Creators: name: Ulivi, L.
name: Celli, M.
name: Giannasi, A.
name: Ramirez-Cuesta, A. J.
name: Bull, D. J.
name: Zoppi, M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We have performed high-resolution inelastic neutron scattering studies on three samples of hydrogenated tetrahydrofuran-water clathrates, containing either H2 at different para/ortho concentrtion, or HD. By a refined analysis of the data, we are able to assign the spectral bands to rotational and center-of-mass translational transitions of either para- or ortho-H2. The H2 molecule rotates almost freely, while performing a translational motion (rattling) in the nanometric-size cage, resulting a paradigmatic example of quantum dynamics in a non-harmonic potential well. Both the H2 rotational transition and the fundamental of the rattling transition split into triplets, having different separation. The splitting is a consequence of a substantial anisotropy of the environment with respect to the orientation of the molecule in the cage, in the first case, or with respect to the center-of-mass position inside the cage, in the second case. The values of the transition frequencies and band intensities have been quantitatively related to the details of the interaction potential between H2 and the water molecules, with a very good agreement.
A description of healthy adolescents’ perceptions of stress : causes, symptoms, responses and outcomes
Creators: name: Bowering, Alice Jean
Publisher: name: University of British Columbia
Year: 2010

description: This exploratory study describes healthy adolescents' perceptions of stress, the causes, symptoms, responses, and outcomes. Differences in their perceptions based on their age and sex are described as well as their perceptions of the relationship between stress and health. A questionnaire was developed as a part of this study. Forty-six individuals, ages 14 to 18, in Y.M.C.A. groups, responded to the questionnaire. Four respondents (9%) reported experience with a stress mangement class. Results of the study indicate the majority of respondents perceived stress as related to health and as a topic of concern. The respondents identified causes of stress related to school/uorK, the family, authority figures, peers, interpersonal relationships, and personal sensitivity. Physiological symptoms were the most frequently noted; affective symptoms the least. A variety of behaviors, including some negative health behaviors, uere reported as responses to stress. The response resources which facilitate the management of stress, described in the literature, were identified by the majority of participants. Participants were Knowledgeable of stress outcomes. When the answers were compared, significant differences based on sex and age were noted for six items. There was also a trend for responses to vary according to sex and age. The results are explained in terms of the factors which influence perception: time, physical state, experience, and the concept of the self. Further investigation of adolescents' perceptions of stress is recommended and stress management education for adolescents may be warranted. Further development of the questionnaire for stress management evaluation or for stress counseling is suggested.
Monochromatic Neutrino Signals from Dark Matter Annihilation
Creators: name: Barger, Vernon
name: Keung, Wai-Yee
name: Shaughnessy, Gabe
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Dark matter annihilations in the Sun to neutrino-antineutrino pairs have striking signatures in neutrino detectors such as IceCube and KM3. We make a model independent study of the signals after propagation of the neutrinos from the center of the Sun to the Earth. A large spin-dependent DM capture cross section in the Sun make the discovery prospects robust.
description: 4 pages, 2 figures
Data Correction and Evolution Analysis of the ProgrammableWeb Service Ecosystem
Creators: name: Liu, Mingyi
name: Tu, Zhiying
name: Zhu, Yeqi
name: Xu, Xiaofei
name: Wang, Zhongjie
name: Sheng, Quan Z.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: The evolution analysis on Web service ecosystems has become a critical problem as the frequency of service changes on the Internet increases rapidly. Developers need to understand these evolution patterns to assist in their decision-making on service selection. ProgrammableWeb is a popular Web service ecosystem on which several evolution analyses have been conducted in the literature. However, the existing studies have ignored the quality issues of the ProgrammableWeb dataset and the issue of service obsolescence. In this study, we first report the quality issues identified in the ProgrammableWeb dataset from our empirical study. Then, we propose a novel method to correct the relevant evolution analysis data by estimating the life cycle of application programming interfaces (APIs) and mashups. We also reveal how to use three different dynamic network models in the service ecosystem evolution analysis based on the corrected ProgrammableWeb dataset. Our experimental experience iterates the quality issues of the original ProgrammableWeb and highlights several research opportunities.
description: This paper has been accepted for publication in The Journal of Systems & Software
Constraints on planetesimal accretion inferred from particle-size distribution in CO chondrites
Creators: name: Pinto, Gabriel A.
name: Marrocchi, Yves
name: Morbidelli, Alessandro
name: Charnoz, Sébastien
name: Varela, Maria Eugenia
name: Soto, Kevin
name: Martínez, Rodrigo
name: Olivares, Felipe
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The formation of planetesimals was a key step in the assemblage of planetary bodies, yet many aspects of their formation remain poorly constrained. Notably, the mechanism by which chondrules -- sub-millimetric spheroids that dominate primitive meteorites -- were incorporated into planetesimals remains poorly understood. Here we classify and analyze particle-size distributions in various CO carbonaceous chondrites found in the Atacama Desert. Our results show that the average circle-equivalent diameters of chondrules define a positive trend with the petrographic grade, which reflects the progressive role of thermal metamorphism within the CO parent body. We show that this relationship could not have been established by thermal metamorphism alone but rather by aerodynamic sorting during accretion. By modeling the self-gravitational contraction of clumps of chondrules, we show that (i) the accretion of the CO parent body(ies) would have generated a gradual change of chondrule size with depth in the parent body, with larger chondrules being more centrally concentrated than smaller ones, and (ii) any subsequent growth by pebble accretion would have been insignificant. These findings give substantial support to the view that planetesimals formed via gravitational collapse.
description: Accepted in ApJL. 24 pages, 3 figures, 2 tables, 1 appendix
Effect of strong correlation on the study of renormalization group flow diagram for Kondo effect in a interacting quantum wire
Creators: name: Sarkar, Sujit
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We present the study of Kondo effect in an interacting quantum wire. We mainly emphasis the effect of strong electronic correlations in the study of renormalization group flow diagram and the stability analysis of fixed points for both magnetic and nonmagnetic impurities. We observe that the behavior of the system is either in the single channel or in the two channel Kondo effect depending on the initial values of coupling constants and strong correlations.
description: 4 figures and 5 pages
Ray-tracing with quantum correlated photons to image a 3D scene
Creators: name: Zhang, Yingwen
name: Orth, Antony
name: England, Duncan
name: Sussman, Benjamin
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: To capture the 3D information of a scene, conventional techniques often require multiple 2D images of the scene to be captured from different perspectives. In this work we demonstrate the reconstruction of a scene's 3D information through ray-tracing using quantum correlated photon pairs. By capturing the two photons in different image planes using time-tagging cameras and taking advantage of the position, momentum and time correlation of the photons, the photons' propagation trajectory can be reconstructed. With this information on every photon pair, we were able to demonstrate refocusing, depth of field adjustment and parallax visualization of a 3D scene. With future camera advancements, this technique could achieve a much higher momentum resolution than conventional techniques thus giving larger depth of field and more viewing angles. The high photon correlation and low photon flux from a quantum source also makes the technique well suited for 3D imaging of light sensitive samples.
Horst-Alfons Meißner, Michael Hirschfeld (Hrsg.), Die Grafschaft Glatz zwischen 1918-1946. Beiträge über eine schlesische Kulturlandschaft. Festschrift für Franz Jung zum 75. Geburtstag
Creators: name: Przerwa, Tomasz
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2015

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 64 Nr. 1 (2015)
The ratchet effect and the transporting islands in the chaotic sea
Creators: name: Wang, Lei
name: Benenti, Giuliano
name: Casati, Giulio
name: Li, Baowen
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study directed transport in a classical deterministic dissipative system. We consider the generic case of mixed phase space and show that large ratchet currents can be generated thanks to the presence, in the Hamiltonian limit, of transporting stability islands embedded in the chaotic sea. Due to the simultaneous presence of chaos and dissipation the stationary value of the current is independent of initial conditions, except for initial states with very small measure.
description: 5 pages, 6 figures
title: Application of the Classical Beam Theory for Studying Lengthwise Fracture of Functionally Graded Beams
Creators: name: Rizov, V.
name: H. Altenbach
Publisher: name: Otto von Guericke University Library, Magdeburg, Germany
Year: 2019

description: Technische Mechanik; 39; 2; 229-240; ISSN 2199-9244
description: The  present  paper  deals  with  analysis  of  lengthwise  cracks  in  linear-elastic  functionally  graded  beam  configurations. A general approach for deriving of the strain energy release rate is developed by applying the classical  beam  theory.  A  crack  located  arbitrary  along  the  beam  thickness  is  considered,  i.e.  the  crack  arms  have  different  thicknesses.  The  approach  holds  for  beams  which  are  functionally  graded  in  the  thickness  direction (the modulus of elasticity can be distributed arbitrary along the thickness of the beam). The approach is  applied  to  analyze  the  strain  energy  release  rate  for  a  lengthwise  crack  in  a  functionally  graded  cantilever  beam.  The  beam  is  loaded  by  one concentrated force  applied  at  the  free  end  of  the  upper  crack  arm.  An  exponential  law  is  used  to  describe  the  continuous  variation  of  the  modulus  of  elasticity  along  the  beam  thickness.  The  solution  to  the  strain  energy  release  rate  in  the  cantilever  beam  is  verified  by  applying  the  J-integral approach. The solution is verified further by using the compliance method for deriving the strain energy release rate. The effects of crack location along the beam thickness, crack length and material gradient on the strain  energy  release  rate  in  the  functionally  graded  cantilever  beam  are  analyzed  by  applying  the  solution  derived.
Assessment of surface wind from the long term production run over Turkey
Creators: name: Menteş, Sibel
name: Kaytancı, Tarık
name: Ezber, Yasemin
Publisher: name: Zenodo
Year: 2019
Subjects: wind resource assessment
mesoscale
WRF

description: Presentation at the NEWA Final Workshop in Bilbao. Assessment of the NEWA mesoscale production run using 47 surface stations over a period of 10 years. Analysis of errors dependency on terrain elevation, terrain complexity, land-use, geographic region and distance to coast.
Chumma lesotho Jocqué & Alderweireldt 2018, sp. nov.
Creators: name: Jocqué, Rudy
name: Alderweireldt, Mark
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Chummidae
Chumma
Chumma lesotho

description: Chumma lesotho sp. nov.
urn:lsid:zoobank.org:act: 2B117D04-879D-4584-8641-BC5DFB20F002
Figs 5E, 6 A–D, 12
Diagnosis
The female of C. lesotho sp. nov. is recognized by the small triangle in the centre of the epigyne and the obliquely positioned spermathecae provided with a retromedian extension and a frontal protuberance.
Etymology
The specific epithet is a noun in apposition taken from the type locality.
Material examined
Holotype
LESOTHO: ♀, Mohale lodge, Likalaneng, 29°28.425′ S, 28°03.412′ E, 2233 m a.s.l., under rock on hillside, 4 Mar. 2003, C. Haddad leg. (MRAC 215897).
Description
Female
BODY MEASUREMENTS. TL 3.07, CL 1.23, CW 1.03, CH 0.63.
CARAPACE. Pale yellow, with darker pale brown striae and pattern in cephalic area; chelicerae, legs and sternum pale yellow (Fig. 6 A–B).
ABDOMEN. With subcircular pale brown scutum, anterior part with spiniform setae in sockets in front of pale circles becoming smaller backwards, absent from one third of scutum length.
EYES. AME: 0.20; ALE: 0.33; AME–AME: 0.07; AME–ALE: 0.07; PME: 0.27; PLE: 0.30; PME–PME: 0.27; PME–PLE: 0.13. Clypeus 0.17 or 0.52 times width of ALE.
STERNUM. Length 1.73, width: 1.73, as long as wide.
LEGS. Tarsi slightly curved. Fe I with one dorsal and one prolateral spine, Fe II with one dorsal spine. EPIGYNE (Figs 5E, 6 C–D). Small rectangular depression, preceded by a narrow ridge; spermathecae visible in transparency, subglobular, provided with tapered retro-median extension and anterior protuberance.
LEG MEASUREMENTS.
Male
Unknown.
Distribution
Known only from the type locality in central Lesotho (Fig. 12).
description: Published as part of Jocqué, Rudy & Alderweireldt, Mark, 2018, New Chummidae (Araneae): quadrupling the size of the clade, pp. 1-25 in European Journal of Taxonomy 412 on pages 13-14, DOI: 10.5852/ejt.2018.412, http://zenodo.org/record/3806047
Integrability and Conformal Bootstrap: One Dimensional Defect CFT
Creators: name: Cavaglià, Andrea
name: Gromov, Nikolay
name: Julius, Julius
name: Preti, Michelangelo
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this letter we study how the exact non-perturbative integrability methods in 4D N=4 Super-Yang-Mills can work efficiently together with the numerical conformal bootstrap techniques to go beyond the spectral observables and access previously unreachable quantities such as correlation functions at finite coupling. In the setup of 1D defect CFT living on a Maldacena-Wilson line, we managed to compute with good precision a non-supersymmetric structure constant for a wide range of the `t Hooft coupling. Our result is particularly precise at strong coupling and matches well with the recent analytic results of Meneghelli and Ferrero.
description: 6 pages, 4 figures
Cohomological tautness for Riemannian foliations
Creators: name: Prieto, J. I. Royo
name: Saralegi-Aranguren, M.
name: Wolak, R.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 53C12 ; 14C30

description: In this paper we present some new results on the tautness of Riemannian foliations in their historical context. The first part of the paper gives a short history of the problem. For a closed manifold, the tautness of a Riemannian foliation can be characterized cohomologically. We extend this cohomological characterization to a class of foliations which includes the foliated strata of any singular Riemannian foliation of a closed manifold.
Feasibility studies of dark photon searches with the J-PET detector
Creators: name: Mędrala-Sowa, Justyna
name: del Rio, Elena Perez
name: Krzemień, Wojciech
Publisher: name: arXiv
Year: 2024
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The positronium, a bound state of electron and positron is a unique system to perform highly precise tests, due to no hadronic background and precise Quantum Electrodynamics (QED) predictions. Being a system of lepton and antilepton, its properties are precisely described by QED in the Standard Model (SM). The final events topology can be simulated using Monte Carlo techniques. The J-PET detector is a multi-purpose, large acceptance system that is very well-suitable to the studies of positronium decay due to its excellent angular (1$^o$) and timing resolutions. \\ We present preliminary results on the feasibility of searching for Dark Matter (DM) candidates in the decay o-Ps $\rightarrow$ invisible with the J-PET, which is well suited for the detection of positronium decay products. Toy Monte Carlo simulations have been prepared to incorporate DM decay models to the o-Ps decay expectations in order to assess the detector capabilities to search for such an elusive component of our Universe.
Anna Moskal, Im Spannungsfeld von Region und Nation. Die Polonisierung der Stadt Posen nach 1918 und 1945
Creators: name: Zabłocka-Kos, Agnieszka
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2015

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 64 Nr. 1 (2015)
High redshift X-ray galaxy clusters. II. The L_X-T relationship revisited
Creators: name: Branchesi, M.
name: Gioia, I. M.
name: Fanti, C.
name: Fanti, R.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In this paper we re-visit the observational relation between X-ray luminosity and temperature for high-z galaxy clusters and compare it with the local L_X-T and with theoretical models. To these ends we use a sample of 17 clusters extracted from the Chandra archive supplemented with additional clusters from the literature, either observed by Chandra or XMM-Newton, to form a final sample of 39 high redshift (0.25 < z < 1.3) objects. Different statistical approaches are adopted to analyze the L_X-T relation. The slope of the L_X-T relation of high redshift clusters is steeper than expected from the self-similar model predictions and steeper, even though still compatible within the errors, than the local L_X-T slope. The distant cluster L_X-T relation shows a significant evolution with respect to the local Universe: high-z clusters are more luminous than the local ones by a factor ~2 at any given temperature. The evolution with redshift of the L_X-T relation cannot be described by a single power law nor by the evolution predicted by the self-similar model. We find a strong evolution, similar or stronger than the self-similar model, from z = 0 to z <0.3 followed by a much weaker, if any, evolution at higher redshift. The weaker evolution is compatible with non-gravitational models of structure formation. According to us a statistically significant sample of nearby clusters (z < 0.25) should be observed with the current available X-ray telescopes to completely exclude observational effects due to different generation detectors and to understand this novel result.
description: 14 pages, 10 postscript figures. Accepted for publication in Astronomy & Astrophysics. Corrected typos
Mellin-Barnes and the method of brackets
Creators: name: Gonzalez, Ivan
name: Kondrashuk, Igor
name: Moll, Victor H.
name: Recabarren, Luis M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Complex Variables (math.CV)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Mathematical Physics (math-ph)
subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: The method of brackets is a method for the evaluation of definite integrals based on a small number of rules. This is employed here for the evaluation of Mellin-Barnes integral. The fundamental idea is to transform these integral representations into a bracket series to obtain their values. The expansion of the gamma function in such a series constitute the main part of this new application. The power and flexibility of this procedure is illustrated with a variety of examples.
Three-Dimensional Simulations of Magnetized Superbubbles: New Insights into the Importance of MHD Effects on Observed Quantities
Creators: name: Stil, J. M.
name: Wityk, N. D.
name: Ouyed, R.
name: Taylor, A. R.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present three-dimensional magnetohydrodynamic (MHD) simulations of superbubbles, to study the importance of MHD effects in the interpretation of images from recent surveys of the Galactic plane. These simulations focus mainly on atmospheres defined by an exponential density distribution and the Dickey & Lockman (1990) density distribution. In each case, the magnetic field is parallel to the Galactic plane and we investigate cases with either infinite scale height (constant magnetic field) or a constant ratio of gas pressure to magnetic pressure. The three-dimensional structure of superbubbles in these simulations is discussed with emphasis on the axial ratio of the cavity as a function of magnetic field strength and the age of the bubble. We investigate systematic errors in the age of the bubble and scale height of the surrounding medium that may be introduced by modeling the data with purely hydrodynamic models. Age estimates derived with symmetric hydrodynamic models fitted to an asymmetric magnetized superbubble can differ by up to a factor of four, depending on the direction of the line of sight. The scale height of the surrounding medium based on the Kompaneets model may be up to 50% lower than the actual scale height. We also present the first ever predictions of Faraday rotation by a magnetized superbubble based on three-dimensional MHD simulations. We emphasize the importance of MHD effects in the interpretation of observations of superbubbles.
description: 21 journal pages. 17 figures. 5 tables (added extensive discussion on the effect of cooling on the bubbles); Accepted for publications in the Astrophysical Journal. Related animations can be accessed via http://www.capca.ucalgary.ca