cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The final twist: A model of gravitational waves from precessing black-hole binaries through merger and ringdown
Creators: name: Hamilton, Eleanor
name: London, Lionel
name: Thompson, Jonathan E.
name: Fauchon-Jones, Edward
name: Hannam, Mark
name: Kalaghatgi, Chinmay
name: Khan, Sebastian
name: Pannarale, Francesco
name: Vano-Vinuales, Alex
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We present PhenomPNR, a frequency-domain phenomenological model of the gravitational-wave (GW) signal from binary-black-hole mergers that is tuned to numerical relativity (NR) simulations of precessing binaries. In many current waveform models, e.g., the "Phenom" and "EOBNR" families that have been used extensively to analyse LIGO-Virgo GW observations, analytic approximations are used to add precession effects to models of non-precessing (aligned-spin) binaries, and it is only the aligned-spin models that are fully tuned to NR results. In PhenomPNR we incorporate precessing-binary NR results in two ways: (i) we produce the first NR-tuned model of the signal-based precession dynamics through merger and ringdown, and (ii) we extend a previous aligned-spin model, PhenomD, to include the effects of misaligned spins on the signal in the co-precessing frame. The NR calibration has been performed on 40 simulations of binaries with mass ratios between 1:1 and 1:8, where the larger black hole has a dimensionless spin magnitude of 0.4 or 0.8, and we choose five angles of spin misalignment with the orbital angular momentum. PhenomPNR has a typical mismatch accuracy within 0.1% up to mass-ratio 1:4, and within 1% up to mass-ratio 1:8.
description: 40 pages, 28 figures
Evolution de l'art traditionnel senoufo : cas du vêtement à peinture de Fakaha (Région de Korhogo, Nord-Côte d'Ivoire)
Creators: name: TOURE Gninin Aïcha
name: GNAPI Quessada Alex Philippe Zougbo
Publisher: name: Zenodo
Year: 2025

description: En pays senoufo précisément dans la région de Korhogo au nord de la Côte d'Ivoire, l’art du vêtement à peinture demeure un savoir-faire endogène originaire du village de Fakaha. Ce savoir-faire, appelé communément Habits ou Boubou senoufo ou encore toile de Korhogo, a connu des mutations dans son usage. Originairement, une tenue pour se protéger du mauvais sors, cette tenue est devenue populaire, au point où elle est considérée comme la tenue traditionnelle du peuple senoufo. Ainsi, l’objectif est de montrer les étapes qui ont peu à peu amené la tenue à peinture traditionnelle à devenir une tenue populaire. Pour ce faire, nous nous sommes basées sur des articles de vulgarisations et sur les informations recueillis auprès des populations dans le village de Fakaha et dans la ville de Korhogo.
Modeling electrostatic and quantum detection of molecules
Creators: name: Vasudevan, S.
name: Walczak, K.
name: Kapur, N.
name: Neurock, M.
name: Ghosh, A. W.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We describe two different modes for electronically detecting an adsorbed molecule using a nanoscale transistor. The attachment of an ionic molecular target shifts the threshold voltage through modulation of the depletion layer electrostatics. A stronger bonding between the molecule and the channel, involving actual overlap of their quantum mechanical wavefunctions, leads to scattering by the molecular traps that creates characteristic fingerprints when scanned with a backgate. We describe a theoretical approach to model these transport characteristics.
description: 11 pages, 5 figures
Time resolved evolution of the 3D nanoporous structure of sintered Ag by X-Ray nanotomography: role of the interface with a copper substrate
Creators: name: N'Tsouaglo, Kokouvi Happy
name: Milhet, Xavier
name: Colin, Jérôme
name: Signor, Loic
name: Nait-Ali, Azdine
name: Creus, Juan
name: Gueguen, Mikael
name: Gadaud, Pascal
name: Legros, Marc
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: The evolution of the nanoporous structure of cylindrical sintered silver samples during high temperature aging, ranging from 200 {\textdegree}C to 350 {\textdegree}C for 350 min, is studied through in-situ Computed X-Ray Tomography. Investigations were performed for two types of specimens: pure sintered silver and 2 specimens containing a silver-copper interface. It is shown that the overall pore evolution is driven by the evolution of very few large ones. The smaller pores, although being more numerous, do not really evolve before being absorbed by the few bigger ones. In pure silver, pore evolution is driven by diffusion (Ostwald ripening) but the presence of an interface promotes faster growth kinetics until the aging time reaches a threshold value, after which a deviation from Ostwald ripening occurs. The transition is a function of the aging temperature. This behavior is associated with the competition between elastic relaxation and surface energy minimization.
Inequivalent quantization of the rational Calogero model with a Coulomb type interaction
Creators: name: Basu-Mallick, B.
name: Gupta, Kumar S.
name: Meljanac, S.
name: Samsarov, A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: We consider the inequivalent quantizations of a $N$-body rational Calogero model with a Coulomb type interaction. It is shown that for certain range of the coupling constants, this system admits a one-parameter family of self-adjoint extensions. We analyze both the bound and scattering state sectors and find novel solutions of this model. We also find the ladder operators for this system, with which the previously known solutions can be constructed.
description: 15 pages, 3 figures, revtex4, typos corrected, to appear in EPJC
Musculus sp.
Creators: name: Hryniewicz, Krzysztof
name: Amano, Kazutaka
name: Bitner, Maria Aleksandra
name: Hagström, Jonas
name: Kiel, Steffen
name: Klompmaker, Adiël A.
name: Mörs, Thomas
name: Robins, Cristina M.
name: Kaim, Andrzej
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Animalia
Mollusca
Bivalvia
Mytilida
Mytilidae
Musculus
Musculus sp.

description: ? Musculus sp.
Fig. 9.
1970? Arca sp.; Anderson 1970: 92, pl. 9: 4a–b.
2016 Arcidae sp.; Hryniewicz et al. 2016: table 2.
Material.— Two specimens, including one fragmentary right valve (NRM-PZ Mo 183957) from the upper Paleocene of Zachariassendalen, Spitsbergen, Svalbard and one (GPIBo 153) from the upper Paleocene, locality 500 m west of Trigonometric point 25, Spitsbergen, Svalbard.
Description.—Shell small, with fine radial ornament separated by broad interspaces and superimposed on strong commarginal growth lines. Posterior end rounded, posterior lobe inclined ventrally. Details of anterior margin and inner shell surface unknown.
Remarks.—This radially ornamented mytilid was previously figured by Anderson (1970) and misidentified as an arcid, an identification followed by Hryniewicz et al. (2016). Closer examination of the material, supplemented by an additional specimen found during the field season in 2017 in Zachariassendalen, revealed that this species is actually a mytilid. Radial ornament superimposed on commarginal growth lines occurs among several mytilid genera. Radial ribs superimposed on strong commarginal growth lines and fading close to the ventral margin of the mid-shell section, and a median keel visible on the posterior lobe suggest that this species possibly belongs to Musculus Röding, 1798, but the lack of well-preserved specimens makes our assignment tentative. From the ribbed mytilids described from the Paleocene strata of Nuusquaq, northwest Greenland Petersen and Vedelsby 2000), Brachidontes sp. 1 and Brachidontes sp. 2 have coarser radial ornament, whereas Brachidontes sp. 3 has somewhat similar ornament and a medial keel to those of the current species. Unfortunately, the fragmentary nature of our material does not allow for a more thorough comparison.
description: Published as part of Hryniewicz, Krzysztof, Amano, Kazutaka, Bitner, Maria Aleksandra, Hagström, Jonas, Kiel, Steffen, Klompmaker, Adiël A., Mörs, Thomas, Robins, Cristina M. & Kaim, Andrzej, 2019, A late Paleocene fauna from shallow-water chemosynthesis-based ecosystems, Spitsbergen, Svalbard, pp. 101-141 in Acta Palaeontologica Polonica 64 (1) on page 113, DOI: 10.4202/app.00554.2018, http://zenodo.org/record/10980900
Hadron masses in QCD with one quark flavour
Creators: name: Farchioni, F.
name: Montvay, I.
name: Münster, G.
name: Scholz, E. E.
name: Sudmann, T.
name: Wuilloud, J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: One-flavour QCD - a gauge theory with SU(3) colour gauge group and a fermion in the fundamental representation - is studied by Monte Carlo simulations. The mass spectrum of hadronic bound states is investigated in a volume with extensions of L ~ 4.4r_0 (~2.2fm) at two different lattice spacings: a ~ 0.37r_0 (~0.19fm) and a ~ 0.27r_0 (~0.13fm). The lattice action is Symanzik tree-level-improved Wilson action for the gauge field and (unimproved) Wilson action for the fermion.
description: 21 pages, 4 figures; further references added
Hypervelocity Stars from the Andromeda Galaxy
Creators: name: Sherwin, Blake D.
name: Loeb, Abraham
name: O'Leary, Ryan M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Hypervelocity stars (HVSs) discovered in the Milky Way (MW) halo are thought to be ejected from near the massive black hole (MBH) at the galactic centre. In this paper we investigate the spatial and velocity distributions of the HVSs which are expected to be similarly produced in the Andromeda galaxy (M31). We consider three different HVS production mechanisms: (i) the disruption of stellar binaries by the galactocentric MBH; (ii) the ejection of stars by an in-spiraling intermediate mass black hole; and (iii) the scattering of stars off a cluster of stellar-mass black holes orbiting around the MBH. While the first two mechanisms would produce large numbers of HVSs in M31, we show that the third mechanism would not be effective in M31. We numerically calculate 1.2*10^6 trajectories of HVSs from M31 within a simple model of the Local Group and hence infer the current distribution of these stars. Gravitational focusing of the HVSs by the MW and the diffuse Local Group medium leads to high densities of low mass (~ solar mass) M31 HVSs near the MW. Within the virialized MW halo, we expect there to be of order 1000 HVSs for the first mechanism and a few hundred HVSs for the second mechanism; many of these stars should have distinctively large approach velocities (< -500 km/s). In addition, we predict ~5 hypervelocity RGB stars within the M31 halo which could be identified observationally. Future MW astrometric surveys or searches for distant giants could thus find HVSs from M31.
description: 14 pages, 6 figures, changed to match version accepted by MNRAS
Enrollment, a decision making perspective
Creators: name: Musa, Musa B.
Publisher: name: University of British Columbia
Year: 2010

description: Adult enrollment rates in continuing education are low. This constitutes a major concern for program providers since financing of programs is based on enrollment. Adult education researchers have investigated the global concept of participation neglecting the question of enrollment decision making. Participation -- the act of taking part in a specific program is distinguished from enrollment--the process of deciding whether to pre-register in a program. This study examined what combination of selected personal and environmental variables "best" predicted enrollment decision making. Beginning with Vroom's (1964) force and valence propositions, modifications were made using the concept of importance (Parker and Dyer, 1976) and adding contextual variables to produce expressive-force and instrumental-valence models. The modified models provided the schema for testing the following hypotheses: (i) the predictive accuracies of the expressive-force, instrumental-valence and multiplicatively combined expressive-force and instrumental-valence model are equal and (ii) the predictive accuracies of the additive and multiplicative forms of the combined expressive-force and instrumental-valence model are equal for predicting an individual's enrollment decision making in a formal educational program. Mailed questionnaires were sent to 133 enrollees and 400 non-enrollees. Of these numbers, 95 and 114 respectively, were returned. Eighty-eight questionnaires were useable in each group. The data were analysed using SPSS Discriminant analysis computer program. Results showed that suitability of the scheduled time of a program and a potential participant's perception of his employer's attitude regarding his intention to participate were the primary predictors of enrollment decision making in the four modified models. Predictive accuracy was augmented marginally by valence in the additive model and, for each of the remaining models by the respective multiplicative combination of the expectancy variables. The mailed brochure was the promotional device most reported as the principal source of information about the program. To improve the likelihood of potential participants making positive enrollment decisions, programmers were urged: (i) to work closely with employers of their clientele to ensure the suitability of the timing of their programs; and (ii) to provide for expressive and instrumental objectives. The paramount importance of using contextual variables in enrollment decision making research was emphasized.
Progress report of the CALIFA/$R^3B$ calorimeter
Creators: name: Cortina-Gil, D.
name: Alvarez-Pol, H.
name: Aumann, T.
name: Avdeichikov, V.
name: Bendel, M.
name: Benlliure, J.
name: Bertini, D.
name: Bezbakh, A.
name: Bloch, T.
name: Böhmer, M.
name: Borge, M. J. G.
name: Briz, J. A.
name: Cabanelas, P.
name: Casarejos, E.
name: Carmona Gallardo, M.
name: Cederkäll, J.
name: Chulkov, L.
name: Dierigl, M.
name: Di Julio, D.
name: Duran, I.
name: Fiori, E.
name: Fomichev, A.
name: Galaviz, D.
name: Gascon, M.
name: Gernhäuser, R.
name: Gerl, J.
name: Golubev, P.
name: Golovkov, M.
name: Gonzalez, D.
name: Gorshkov, A.
name: Heinz, A.
name: Heil, M.
name: Heiss, B.
name: Henning, W.
name: Ickert, G.
name: Ignatov, A.
name: Jakobsson, B.
name: Johansson, H. T.
name: Kmiecik, M.
name: Kröll, T.
name: Krücken, R.
name: Krupko, S.
name: Kurz, F.
name: Le Bleis, T.
name: Löher, B.
name: Maj, A.
name: Nacher, E.
name: Nilsson, T.
name: Perea, A.
name: Pfeffer, C.
name: Pietralla, N.
name: Pietras, B.
name: Reifarth, R.
name: Sanchez Del Rio, J.
name: Savran, D.
name: Sidorchuk, S.
name: Simon, H.
name: Schnorrenberger, L.
name: Tengblad, O.
name: Teubig, P.
name: Thies, R.
name: Vilan, J. A.
name: Von Schmid, M.
name: Winkel, M.
name: Winkler, S.
name: Wamers, F.
name: Yanez, P.
name: Zieblinski, M.
Publisher: name: GSI Helmholtzzentrum fuer Schwerionenforschung, Darmstadt
Year: 2014
Subjects: Physics

description: GSI Scientific Report 2013 - GSI Report 2014-1
SOFIARoot: Simulation of the SOFIA/ANDES Setup
Creators: name: Rodriguez-Sanchez, J. L.
name: Alvarez-Pol, H.
name: Ayyad, Y.
name: Benlliure, J.
name: Cabanelas, P.
name: Paradela, C.
Publisher: name: GSI Helmholtzzentrum fuer Schwerionenforschung, Darmstadt
Year: 2014
Subjects: Physics

description: GSI Scientific Report 2013 - GSI Report 2014-1
The Effect of the Breit-Interaction Studied for the Emission Characteristics of $1s2s^22p_{1/2}$ Decay in Be-like Uranium
Creators: name: Trotsenko, S.
name: Gumberidze, A.
name: Gao, Y.
name: Kozhuharov, C.
name: Fritzsche, Stephan
name: Surzhykov, A.
name: Petridis, N.
name: Thorn, D. B.
name: Beyer, Heinrich
name: Grisenti, R. E.
name: Hagmann, S.
name: Hillenbrand, P.-M.
name: Spillmann, U.
name: Weber, G.
name: Stöhlker, T.
Publisher: name: GSI Helmholtzzentrum fuer Schwerionenforschung, Darmstadt
Year: 2014
Subjects: Physics

description: GSI Scientific Report 2013 - GSI Report 2014-1
title: Investigating microbial responses to PFOS and PFOA exposure
Creators: name: CHUGH, GAURAV
Publisher: name: University of Galway
Year: 2024
Subjects: subject: Biological and Chemical Sciences
subject: Science
subject: PFOS exposure
subject: PFOA exposure

description: Per- and polyfluoroalkyl substances (PFAS), a group of synthetic chemicals, known as "forever chemicals" for their exceptional physical and chemical properties, have become a pressing environmental concern due to their persistence and bioaccumulation. This thesis presents a comprehensive investigation into the dynamic interplay between PFAS and microorganisms, employing Escherichia coli as a model system to elucidate the molecular mechanisms governing their impact. Initially, this study investigated the potential biodegradation of the recalcitrant PFAS compound, perfluorooctanesulfonic acid (PFOS), using contaminated landfill leachate for microbial enrichment and Pseudomonas strain isolation. However, no evidence of PFOS degradation was obtained. Next, this work investigated the effects of perfluorooctanoic acid (PFOA) and PFOS exposure on E. coli under various stress conditions (salt and acid stress). Exposure to PFOA affected the growth and survival of E. coli at pH 5.2 and pH 3, respectively. Transcriptomic analyses of PFOA-exposed cells compared to octanoic acid at pH 5.2 as a control further shed light on the underlying molecular mechanisms, revealing distinctive gene expression patterns under these conditions. Notably, higher differential expression of genes associated with acid stress response, membrane disruption, oxidative stress, and DNA damage emerged in PFOA-exposed cells. Finally, an in vitro evolution experiment (IVEE) using E. coli provided further insights into the differential impact of PFOA and octanoic acid on cell growth, survival, and membrane integrity, attributing PFOA's heightened toxicity to membrane disruption. Overall, this study provides essential insights into interactions of PFAS with microorganisms using E. coli as a model, indicating that PFOA exposure can cause significant stress responses in E. coli cells and may exacerbate the effects of other stressors, such as acid stress. Furthermore, this phenomenon may extend to other bacterial species, potentially impacting microbial-based ecosystems. Overall, these findings have important implications for understanding the potential impacts of PFOA exposure on living organisms and the environment.
A system on chip for melanoma detection using FPGA-based SVM classifier
Creators: name: Afifi, Shereen
name: GholamHosseini, Hamid
name: Sinha, Roopak
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Image and Video Processing (eess.IV)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Support Vector Machine (SVM) is a robust machine learning model that shows high accuracy with different classification problems, and is widely used for various embedded applications. However , implementation of embedded SVM classifiers is challenging, due to the inherent complicated computations required. This motivates implementing the SVM on hardware platforms for achieving high performance computing at low cost and power consumption. Melanoma is the most aggressive form of skin cancer that increases the mortality rate. We aim to develop an optimized embedded SVM classifier dedicated for a low-cost handheld device for early detection of melanoma at the primary healthcare. In this paper, we propose a hardware/software co-design for implementing the SVM classifier onto FPGA to realize melanoma detection on a chip. The implemented SVM on a recent hybrid FPGA (Zynq) platform utilizing the modern UltraFast High-Level Synthesis design methodology achieves efficient melanoma classification on chip. The hardware implementation results demonstrate classification accuracy of 97.9%, and a significant hardware acceleration rate of 21 with only 3% resources utilization and 1.69W for power consumption. These results show that the implemented system on chip meets crucial embedded system constraints of high performance and low resources utilization, power consumption, and cost, while achieving efficient classification with high classification accuracy.
description: Journal paper, 13 pages, 3 figures, 9 tables
Impact of slepton generation mixing on the search for sneutrinos
Creators: name: Bartl, A.
name: Hidaka, K.
name: Hohenwarter-Sodek, K.
name: Kernreiter, T.
name: Majerotto, W.
name: Porod, W.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We perform a systematic study of sneutrino production and decays in the Minimal Supersymmetric Standard Model (MSSM) with slepton generation mixing. We study both fermionic decays like sneutrino \to l^- chargino^+, nu neutralino and bosonic decays such as sneutrino \to slepton^- H^+, slepton^- W^+. We show that the effect of slepton generation mixing on the sneutrino production cross sections and its decay branching ratios can be quite large in a significant part of the MSSM parameter space despite the very strong experimental limits on lepton flavour violating processes. This could have an important impact on the search for sneutrinos and the determination of the MSSM parameters at future colliders, such as LHC, ILC, CLIC and muon collider.
description: 18 pages, 8 figures; close to published version
TILSHUNOSLIKDA MAYDON TUSHUNCHASI VA ULARNING TURLARI
Creators: name: Jumayev, Begali
Publisher: name: Zenodo
Year: 2023

description: Ushbu maqolada tilshunos olimlar tomonidan maydon nazariyasiga berilgan ta’riflar o’rganilib chiqilib, maydon tushunchasi va ularning turlari tahlil qilingan. Shu bilan birga frazeologik birliklarda maydon tushunchasining ahamiyati tadqiq etilgan.
Complex-Orbital Order in Fe_3O_4 and Mechanism of the Verwey Transition
Creators: name: Uzu, Hisashi
name: Tanaka, Arata
Publisher: name: arXiv
Year: 2008
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Electronic state and the Verwey transition in magnetite (Fe_3O_4) are studied using a spinless three-band Hubbard model for 3d electrons on the B sites with the Hartree-Fock approximation and the exact diagonalisation method. Complex-orbital, e.g., 1/sqrt(2)[|zx> + i |yz>], ordered (COO) states having noncollinear orbital moments ~ 0.4 mu_B on the B sites are obtained with the cubic lattice structure of the high-temperature phase. The COO state is a novel form of magnetic ordering within the orbital degree of freedom. It arises from the formation of Hund's second rule states of spinless pseudo-d molecular orbitals in the Fe_4 tetrahedral units of the B sites and ferromagnetic alignment of their fictitious orbital moments. A COO state with longer periodicity is obtained with pseudo-orthorhombic Pmca and Pmc2_1 structures for the low-temperature phase. The state spontaneously lowers the crystal symmetry to the monoclinic and explains experimentally observed rhombohedral cell deformation and Jahn-Teller like distortion. From these findings, we consider that at the Verwey transition temperature, the COO state remaining to be short-range order impeded by dynamical lattice distortion in high temperature is developed into that with long-range order coupled with the monoclinic lattice distortion.
description: 16 pages, 13 figures, 6 tables, accepted for publication in J. Phys. Soc. Jpn
Research Software Development & Management in Universities: Case Studies from Manchester's RSDS Group, Illinois' NCSA, and Notre Dame's CRC
Creators: name: Katz, Daniel S.
name: McHenry, Kenton
name: Reinking, Caleb
name: Haines, Robert
Publisher: name: Zenodo
Year: 2019
Subjects: software sustainability
research software
research software engineering
scientific software
project management
group management
software engineering

description: Slides to accompany our paper (https://arxiv.org/abs/1903.00732) presented at SE4Science.
Uniform bounds for point cohomology of $\ell^1({\mathbb Z}_+)$ and related algebras
Creators: name: Choi, Yemon
Publisher: name: arXiv
Year: 2008
Subjects: subject: Functional Analysis (math.FA)
subject: Commutative Algebra (math.AC)
subject: FOS: Mathematics
subject: 46J15, 46J20 (Primary) 16E40, 43A20 (Secondary)

description: It is well-known that the point cohomology of the convolution algebra $\ell^1({\mathbb Z}_+)$ vanishes in degrees 2 and above. We sharpen this result by obtaining splitting maps whose norms are bounded independently of the choice of point module. Our construction is a by-product of new estimates on projectivity constants of maximal ideals in $\ell^1({\mathbb Z}_+)$. Analogous results are obtained for some other $L^1$-algebras which arise from `rank one' subsemigroups of ${\mathbb R}_+$.
description: 19 pages, submitted. Uses diagrams.sty macros. v2: 16 pp. same mathematical content, with some reorganization and trimming of the presentation. v3: correction of a few typos. v4: some more minor corrections of typos. Slightly shorter version to appear in J. Math. Anal. Appl
Not as Ubiquitous as We Thought: Taxonomic Crypsis, Hidden Diversity and Cryptic Speciation in the Cosmopolitan Fungus Thelonectria discophora (Nectriaceae, Hypocreales, Ascomycota)
Creators: name: Salgado-Salazar, Catalina
name: Rossman, Amy Y.
name: Chaverri, Priscila
Publisher: name: Digital Repository at the University of Maryland
Year: 2013
Subjects: Bayes theorem
Fungal spores
Fungi
Genetic loci
Geography
Phylogenetic analysis
Phylogenetics
Phylogeography

description: The distribution of microbial species, including fungi, has long been considered cosmopolitan. Recently, this perception has been challenged by molecular studies in historical biogeography, phylogeny and population genetics. Here we explore this issue using the fungal morphological species Thelonectria discophora, one of the most common species of fungi in the family Nectriaceae, encountered in almost all geographic regions and considered as a cosmopolitan taxon. In order to determine if T. discophora is a single cosmopolitan species or an assemblage of sibling species, we conducted various phylogenetic analyses, including standard gene concatenation, Bayesian concordance methods, and coalescent-based species tree reconstruction on isolates collected from a wide geographic range. Results show that diversity among isolates referred as T. discophora is greatly underestimated and that it represents a species complex. Within this complex, sixteen distinct highly supported lineages were recovered, each of which has a restricted geographic distribution and ecology. The taxonomic status of isolates regarded as T. discophora is reconsidered, and the assumed cosmopolitan distribution of this species is rejected. We discuss how assumptions about geographically widespread species have implications regarding their taxonomy, true diversity, biological diversity conservation, and ecological functions.
description: This study was funded by a grant from United States National Science Foundation (PEET program, grant number DEB-0925696: “Monographic Studies in the Nectriaceae, Hypocreales: Nectria, Cosmospora, and Neonectria” http://www.nsf.gov/). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.
On the sound dispersion and attenuation in fluids due to thermal and viscous effects
Creators: name: Zaidni, Azeddine
name: Benjelloun, Saad
Publisher: name: arXiv
Year: 2021
Subjects: subject: Classical Physics (physics.class-ph)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: In this paper, we derive a dispersion relation for sound waves in viscous and heat conducting fluids. In particular this dispersion (i.e. variation of speed of sound with frequency) is shown to be of second order of magnitude, w.r.t. Knudsen numbers, as in the Stokes [2] case, corresponding to non-conductive fluid (Prandtl number P r = $\infty$). This formula completes the classical attenuation relation called Stokes-Kirchhoff. We represent in a simplified manner the Kirchhoff approach to derive this attenuation [1], starting from the 3D compressible Navier-stokes system. The classical Stokes-Kirchhoff formula has been questioned recently in [3] and a different (and incorrect) formula was proposed. We point out the non-trivial assumptions that are violated in the new derivation in [3] to reestablish the classical Stokes-Kirchhoff formula. Finally, we give an explanation to differences in dispersion and attenuation formulae that one may find in the literature through analysing the form of the considered attenuated solutions.
Node Dependent Local Smoothing for Scalable Graph Learning
Creators: name: Zhang, Wentao
name: Yang, Mingyu
name: Sheng, Zeang
name: Li, Yang
name: Ouyang, Wen
name: Tao, Yangyu
name: Yang, Zhi
name: Cui, Bin
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Recent works reveal that feature or label smoothing lies at the core of Graph Neural Networks (GNNs). Concretely, they show feature smoothing combined with simple linear regression achieves comparable performance with the carefully designed GNNs, and a simple MLP model with label smoothing of its prediction can outperform the vanilla GCN. Though an interesting finding, smoothing has not been well understood, especially regarding how to control the extent of smoothness. Intuitively, too small or too large smoothing iterations may cause under-smoothing or over-smoothing and can lead to sub-optimal performance. Moreover, the extent of smoothness is node-specific, depending on its degree and local structure. To this end, we propose a novel algorithm called node-dependent local smoothing (NDLS), which aims to control the smoothness of every node by setting a node-specific smoothing iteration. Specifically, NDLS computes influence scores based on the adjacency matrix and selects the iteration number by setting a threshold on the scores. Once selected, the iteration number can be applied to both feature smoothing and label smoothing. Experimental results demonstrate that NDLS enjoys high accuracy -- state-of-the-art performance on node classifications tasks, flexibility -- can be incorporated with any models, scalability and efficiency -- can support large scale graphs with fast training.
description: 19 pages, 5 figures
Measuring the mean and scatter of the X-ray luminosity -- optical richness relation for maxBCG galaxy clusters
Creators: name: Rykoff, E. S.
name: McKay, T. A.
name: Becker, M. R.
name: Evrard, A.
name: Johnston, D. E.
name: Koester, B. P.
name: Rozo, E.
name: Sheldon, E. S.
name: Wechsler, R. H.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Determining the scaling relations between galaxy cluster observables requires large samples of uniformly observed clusters. We measure the mean X-ray luminosity--optical richness (L_X--N_200) relation for an approximately volume-limited sample of more than 17,000 optically-selected clusters from the maxBCG catalog spanning the redshift range 0.1
description: 21 pages, 12 figures, revised after referee's comments. ApJ accepted
Machine learning application to detect light echoes around black holes
Creators: name: Chainakun, P.
name: Mankatwit, N.
name: Thongkonsing, P.
name: Young, A. J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: X-ray reverberation has become a powerful tool to probe the disc-corona geometry near black holes. Here, we develop Machine Learning (ML) models to extract the X-ray reverberation features imprinted in the Power Spectral Density (PSD) of AGN. The machine is trained using simulated PSDs in the form of a simple power-law encoded with the relativistic echo features. Dictionary Learning and sparse coding algorithms are used for the PSD reconstruction, by transforming the noisy PSD to a representative sparse version. Then, the Support Vector Machine is employed to extract the interpretable reverberation features from the reconstructed PSD that holds the information of the source height. The results show that the accuracy of predicting the source height, $h$, is genuinely high and the misclassification is only found when $h$ > 15$r_g$. When the test PSD has a bending power-law shape, which is completely new to the machine, the accuracy is still high. Therefore, the ML model does not require the intrinsic shape of the PSD to be determined in advance. By focusing on the PSD parameter space observed in real AGN data, classification for $h \leq$ 10$r_g$ can be determined with 100% accuracy, even using a PSD in an energy band that contains a reflection flux as low as 10% of the total flux. For $h$ > 10$r_g$, the data, if misclassified, will have small uncertainties of $Δh$ ~ 2-4$r_g$. This work shows, as a proof of concept, that the ML technique could shape new methodological directions in the X-ray reverberation analysis.
description: 12 pages, 13 figures, accepted for publication in MNRAS
Revisiting a Low-Dimensional Model with Short Range Interactions and Mean Field Critical Behavior
Creators: name: Grassberger, Peter
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: In all local low-dimensional models, scaling at critical points deviates from mean field behavior -- with one possible exception. This exceptional model with ``ordinary" behavior is an inherently non-equilibrium model studied some time ago by H.-M. Broker and myself. In simulations, its 2-dimensional version suggested that two critical exponents were mean-field, while a third one showed very small deviations. Moreover, the numerics agreed almost perfectly with an explicit mean field model. In the present paper we present simulations with much higher statistics, both for 2d and 3d. In both cases we find that the deviations of all critical exponents from their mean field values are non-leading corrections, and that the scaling is {\it precisely} of mean field type. As in the original paper, we propose that the mechanism for this is ``confusion", a strong randomization of the phases of feed-backs that can occur in non-equilibrium systems.
description: 5 pages, including 9 figures
An assessment of illuminative evaluation as an approach to evaluating residential adult education programs
Creators: name: Hasman, Ruth Margaret Reiner
Publisher: name: University of British Columbia
Year: 2010

description: The purpose of this study was to test the suitability of illuminative evaluation as a methodology for determining the value of residential adult education programs. Illuminative evaluation methodology was selected for several reasons. First, the methodology functioned independently of the program. Second, it permitted the flexibility needed to evaluate a developing program. Third, it provided a means of studying spontaneous events. Fourth, it allowed for representation of multiple viewpoints, and lastly, few studies of this methodology had been undertaken (Miles, 1981; Parlett & King, 1971). For those reasons, it seemed important to investigate the suitability of illuminative evaluation. A residential program was determined to be particularly suitable for testing illuminative evaluation because it had some unique advantages that did not exist in other program formats. The chief advantage of the residential format over the more traditional types was that of removing the participant temporarily from his ongoing responsibilities. This made it possible for the investigator to have continuous contact with the participants which is important for a methodology that relies on fieldwork techniques. In this study, illuminative evaluation methodology was applied to the evaluation of a residential program at the Justice Institute of British Columbia. In order to test the suitability of the methodology, three criteria appearing frequently in the literature were judged appropriate to this study—technical adequacy, utility and efficiency. The literature suggested that an evaluation should produce technically sound information that is useful to some audience and is worth more to the audience than it costs (Grotelueschen, 1980). Evidence of the degree to which illuminative evaluation met these criteria was collected during the program. Techniques such as interviews, questionnaires, and observations were used to collect the evidence. The evidence was analyzed using quantitative and qualitative techniques to determine whether the methodology met the standards set by the criteria. The evidence collected showed that this methodology satisfied the criteria requirements of technical adequacy and utility. Although it was weak on the efficiency criterion, the methodology compensated with particular strengths in utility and technical adequacy. For further research, there are a whole host of possible areas that illuminative evaluation opens up. Further work needs to be done to develop specific tasks, questions, and/or procedures which could guide implementation of each stage of the illuminative evaluation methodology. Further studies could be done to contribute to the understanding of the methodology and studies could be done to determine the suitability of the methodology for evaluating other adult education program formats.
Some comments on the Hamiltonian for Unimodular Gravity
Creators: name: Álvarez, Enrique
name: Anero, Jesús
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Several alternative formulations of the first order approach to unimodular gravity are presented. There is always a particular one such that it is {\em classically} equivalent to the second order formulation; this we call {\em educated}. It is often at variance with the {\em naive} approach, in which the lagrangian is taken as given exactly by the same expression as in the second order formulation; only the number and character of the independent variables changes. Namely, typically some of the momenta are now considered as coordinates. The ensuing Hamiltonians are thereby discussed and their physical differences pointed out.
description: 28 pages
Interface Tension of Bose-Einstein Condensates
Creators: name: Van Schaeybroeck, Bert
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: Motivated by recent observations of phase-segregated binary Bose-Einstein condensates, we propose a method to calculate the excess energy due to the interface tension of a trapped configuration. By this method one should be able to numerically reproduce the experimental data by means of a simple Thomas-Fermi approximation, combined with interface excess terms and the Laplace equation. Using the Gross-Pitaevskii theory, we find expressions for the interface excesses which are accurate in a very broad range of the interspecies and intraspecies interaction parameters. We also present finite-temperature corrections to the interface tension which, aside from the regime of weak segregation, turn out to be small.
description: 10 pages, 4 figures
UN'UGUAGLIANZA INSIEMISTICA RELATIVA ALLA FUNZIONE ENUMERATIVA DEI NUMERI PRIMI
Creators: name: Bossi, Riccardo Jacopo
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 490401
subject: Algebra and number theory

description: In questo articolo esporrò un'uguaglianza relativa alla funzione enumerativa dei numeri primi, che uguaglierà questa alla cardinalità di vari insiemi.
IMPLEMENTING A SUPPORT PERSON AS AN INTERVENTION FOR HEMODIALYSIS PATIENTS TO IMPROVE FLUID REGIMEN ADHERENCE
Creators: name: Varghese, Ann Sherly
Publisher: name: Zenodo
Year: 2019

description: The purpose of this quality improvement (QI) project was to implement and evaluate the effect of social support among End Stage Renal Disease (ESRD) patients receiving hemodialysis (HD) to determine if there was an improvement in their adherence to fluid restriction regimens. The objective of this QI project was to improve the patient’s adherence levels by monitoring their daily fluid intake and their Intradialytic Weight Gain (IDWG) levels. The project used a non-experimental pre-post design, to assess the influence of social support on IDWG among HD patients. A purposive sampling method was selected due to the characteristics of the HD population. The effect of social support was tested by comparing the following variables: (1) mean IDWG of HD treatments, pre and post intervention (without and with social support) to measure the effect on fluid adherence regimens for four weeks; (2) mean number of days the participants did not follow fluid adherence regimens; (3) mean scores obtained on a five-point Likert scale (0-4) on the Dialysis and Diet Fluid Adherence Questionnaire (DDFQ). The mean IDWG of the post-intervention phase was 0.18 kg higher than the value of the pre-intervention phase for all participants with social support. This difference was not statistically significant (t(9) = -.642, p = .537); there was no significant change in the IDWG levels post-intervention. iv The project findings did not support the published research, which indicated that having a support person helped to improve fluid adherence and lower the mean IDWG levels among HD participants. The DDFQ scores were significant with regard to the frequency and degree of non-adherence with diets and fluids when compared to pre- and post- assessments. The IDWG scores did not decrease over the course of four weeks of HD treatments. The finding suggested that unless there is constant reinforcement from a support person, patients may tend to change their behavior depending on the situation and their lifestyle. The outcome of this QI project may suggest that more behavioral reinforcement regarding fluid and dietary regimens is required for HD patients to adhere to fluid restrictions. Additional intervention studies can be conducted to improve clinical outcomes related to compliance behaviors.
Inoperna Conrad 1875
Creators: name: Hryniewicz, Krzysztof
name: Amano, Kazutaka
name: Bitner, Maria Aleksandra
name: Hagström, Jonas
name: Kiel, Steffen
name: Klompmaker, Adiël A.
name: Mörs, Thomas
name: Robins, Cristina M.
name: Kaim, Andrzej
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Animalia
Mollusca
Bivalvia
Mytilida
Mytilidae
Inoperna

description: Genus Inoperna Conrad, 1875
Type species: Inoperna carolinensis Conrad, 1875; Campanian– Maastrichtian, Upper Cretaceous, southeastern USA.
Remarks.— Inoperna Conrad, 1875, is a poorly known mytilid bivalve genus reported from Mesozoic shallow-water deposits (e.g., Woods 1900; Stephenson 1923; Wade 1926; Cox and Arkell 1948; Hautmann 2001). Specimens assigned to Inoperna are elongate, thin-shelled mytiliform bivalves with subterminal umbones and characteristic ornament of commarginal corrugations, some of which merge into bundles of dorsal commarginal folds. Ten species, including Inoperna plenicostata (Anderson, 1970) discussed herein, have been recorded previously (Stenzel et al. 1957: 74; Vonderbank 1970). Mauricia Harris, 1919, from the middle Eocene Cook Mountain Formation (Claiborne Group) in Texas, USA, is similar to Inoperna with respect to shell shape and ornament and could represent the same lineage (Stenzel et al. 1957).
description: Published as part of Hryniewicz, Krzysztof, Amano, Kazutaka, Bitner, Maria Aleksandra, Hagström, Jonas, Kiel, Steffen, Klompmaker, Adiël A., Mörs, Thomas, Robins, Cristina M. & Kaim, Andrzej, 2019, A late Paleocene fauna from shallow-water chemosynthesis-based ecosystems, Spitsbergen, Svalbard, pp. 101-141 in Acta Palaeontologica Polonica 64 (1) on page 114, DOI: 10.4202/app.00554.2018, http://zenodo.org/record/10980900
Superexponential amplification, power blowup, and solitons sustained by non-Hermitian gauge potentials
Creators: name: Zezyulin, Dmitry A.
name: Kartashov, Yaroslav V.
name: Konotop, Vladimir V.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: We introduce a continuous one-dimensional non-Hermitian matrix gauge potential and study its effect on dynamics of a two-component field. The model is emulated by a system of evanescently coupled nonlinear waveguides with distributed gain and losses. The considered gauge fields lead to a variety of unusual physical phenomena in both linear and nonlinear regimes. In the linear regime, the field may undergo superexponential convective amplification. A total power of an input Gaussian beam may exhibit a finite-distance blowup, which manifests itself in absolute delocalization of the beam at a finite propagation distance, where the amplitude of the field remains finite. The defocusing Kerr nonlinearity initially enhances superexponential amplification, while at larger distances it suppresses the growth of the total power. The focusing nonlinearity at small distances slows down the power growth and eventually leads to the development of the modulational instability. Complex periodic gauge fields lead to the formation of families of stable fundamental and dipole solitons.
description: accepted for Phys. Rev. A (Letters)
Superefficiency from the Vantage Point of Computability
Creators: name: Vovk, Vladimir
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics

description: In 1952 Lucien Le Cam announced his celebrated result that, for regular univariate statistical models, sets of points of superefficiency have Lebesgue measure zero. After reviewing the turbulent history of early studies of superefficiency, I suggest using the notion of computability as a tool for exploring the phenomenon of superefficiency. It turns out that only computable parameter points can be points of superefficiency for computable estimators. This algorithmic version of Le Cam's result implies, in particular, that sets of points of superefficiency not only have Lebesgue measure zero but are even countable.
description: Published in at http://dx.doi.org/10.1214/09-STS279 the Statistical Science (http://www.imstat.org/sts/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Can degenerate bound states occur in one dimensional quantum mechanics?
Creators: name: Kar, Sayan
name: Parwani, Rajesh R.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We point out that bound states, degenerate in energy but differing in parity, may form in one dimensional quantum systems even if the potential is non-singular in any finite domain. Such potentials are necessarily unbounded from below at infinity and occur in several different contexts, such as in the study of localised states in brane-world scenarios. We describe how to construct large classes of such potentials and give explicit analytic expressions for the degenerate bound states. Some of these bound states occur above the potential maximum while some are below. Various unusual features of the bound states are described and after highlighting those that are ansatz independent, we suggest that it might be possible to observe such parity-paired degenerate bound states in specific mesoscopic systems.
description: 10 pages, 2 figures, to appear in Europhysics Letters