cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Curvature Singularities from Gravitational Contraction in f(R) Gravity
Creators: name: Reverberi, Lorenzo
Publisher: name: arXiv
Year: 2012
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The discovery of the accelerated expansion of the Universe has had a vast resonance on a number of physical disciplines. In recent years several viable modified gravity models have been proposed, which naturally lead to a late-time de Sitter stage while basically reducing to General Relativity in the early Universe. We consider a contracting cloud of pressureless dust, having arbitrary mass and initial density, and discuss some aspects of these modified gravity models. We show how the increasing energy/mass density may lead to a curvature singularity and discuss the typical timescales for its development.
description: 12 pages, 7 figures. Major changes from previous version. Accepted for publication in PRD
H- Ion Source Development for the FNAL 750keV Injector Upgrade
Creators: name: Bollinger, D. S.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Accelerator Physics (physics.acc-ph)
subject: FOS: Physical sciences

description: The new FNAL 750keV injector upgrade for the replacement of the 40 year old Fermi National Laboratory (FNAL) Cockcroft-Walton accelerators with a new ion source and 200MHz Radio Frequency Quadrupole (RFQ), Low Energy Beam Transport (LEBT) and Medium Energy Beam Transport (MEBT), has been built and is now being tested prior to installation during the 2012 shutdown. The new H- ion source is a round aperture magnetron which was developed at Brookhaven National Lab (BNL) by Jim Alessi. Operational experience from BNL has shown that this type of source is more reliable with a longer lifetime (on the order of 6 to 9 months) due to better power efficiency. With a similar duty factor to BNL, we expect to have a comparable lifetime between source changes. The new source design reliably produces 90mA of H- beam current at 15Hz rep-rate, 250 μs pulse width, and a duty factor of 0.38%. The measured emittances at the end of the LEBT are horizontally εH = 0.21πmm* mrad and vertically εv = 0.17πmm* mrad. With 35kV extraction the power efficiency is 60mA/kW. The source design, along with data from a test stand and the LEBT, will be presented in this paper.
description: 9 pp
Competencias para la ciudadanía digital
Creators: name: Suing, Abel
Publisher: name: Zenodo
Year: 2023
Subjects: comunicación
ciudadanía
digital
Ecuador
formación
bienestar

description: Publicación en la sección de opinión del diario digital hora 32 https://hora32.com.ec/ que se edita en Loja (Ecuador)
CSCCE Community Profile: The National Microbiome Data Collaborative
Creators: name: Woodley, Lou
name: Pratt, Katie
name: Kobilka, Sara
name: Vangay, Pajau
Publisher: name: Zenodo
Year: 2020
Subjects: CSCCE Community Profile
CSCCE
Describing STEM communities
National Microbiome Data Collaborative
data science commuities

description: CSCCE Community Profiles provide a snapshot of scientific communities. The data for these profiles were collected by surveying scientific community managers as part of a research project conducted by CSCCE staff in collaboration with a CSCCE Working Group. This profile showcases the CSSCE Community of Practice. If you would like to create a profile for your scientific community or organization, please contact us: info@cscce.org.
title: Connaissance et devenir des territoires : les recherches du PIREN-Seine face à la société
Creators: name: Carré, Catherine
Publisher: name: PIREN-Seine
Year: 2019

description: Ce petit chapitre constitue l’introduction des trois rapports  suivants,dans le cadre de l’approche réflexive que les chercheurs du PIREN-Seine ont conduite pendant la phase 7 du programme. Cette approche est fondée sur l’analyse des  outils  et des dispositifs  de  production  de  la  connaissance conçus  et  développés  par  les  chercheurs en faveur d’actions pour  améliorer  la  qualité  des  cours d’eau du bassin de la Seine. Elle concerne les modèles propres au PIREN-Seine, les mesures et les données produites pour décrire le fonctionnement de l’hydrosystème et alimenter les modèles, enfin les outils d’une recherche participative dans les territoires.

Points clefs :
Point clef 1 - Les  chercheurs  du  PIREN-Seine  dans  sa  phase  7  ont  souhaité  mené  une  approche réflexive sur leurs pratiques de recherche et sur l’utilisation de leurs travaux avec leurs partenaires et les usagers du bassin de la Seine.
Point clef 2 - Dans le cadre d’une recherche conçue comme partenariale, les différents  modes  de production et d’utilisation des outils (mesures, modèles, scénarios, outils participatifs) dépendent de la conception que les chercheurs se font d’une recherche scientifique et de leur engagement avec les autres acteurs du bassin de la Seine.
Point clef 3 - Les  formes de  modèles  et de  recherche  participative  ont  ainsi  pris  une  variété  de formats,  depuis  l’association  des  gestionnaires  et  des  usagers  à  la  production  de  données, d’apprentissage collectif, jusqu’à la mise en place et l’animation d’outils de médiation.
Direct imaging of hot spots in Bi_{2}Sr_{2}CaCu_{2}O_{8+δ} mesa terahertz sources
Creators: name: Benseman, T. M.
name: Koshelev, A. E.
name: Kwok, W. -K.
name: Welp, U.
name: Vlasko-Vlasov, V. K.
name: Kadowaki, K.
name: Minami, H.
name: Watanabe, C.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Stacks of intrinsic Josephson junctions (IJJs) made from high-temperature superconductors such as Bi_{2}Sr_{2}CaCu_{2}O_{8+δ} (Bi-2212) are a promising source of coherent continuous-wave terahertz radiation. It is thought that at electrical bias conditions under which THz-emission occurs hot spots may form due to resistive self-heating, and that these spots may be highly beneficial for the generation of high levels of THz power. Here we perform an imaging study of the temperature distribution at the surface of BSCCO stacks utilizing the temperature-dependent 612nm fluorescence line of Eu^{3+} in a europium chelate. The images directly reveal a highly non-uniform temperature distribution in which the temperature in the middle of the stack can exceed the superconducting transition temperature by tens of Kelvin under biasing conditions typical for THz-emission.
description: 18 pages, 5 figures
CSCCE Community Profile: Code for Science & Society Event Fund
Creators: name: Woodley, Lou
name: Pratt, Katie
name: Kobilka, Sara
name: Lescak, Emily
Publisher: name: Zenodo
Year: 2021
Subjects: CSCCE Community Profile
CSCCE
Describing STEM communities
Code for Science & Society
Event Fund

description: Context for this profile CSCCE Community Profiles provide a snapshot of scientific communities. The data for these profiles were collected by surveying scientific community managers as part of a research project conducted by CSCCE staff. This profile showcases the Code for Science & Society Event Fund, and is part of a second collection of profiles published in July 2021. You can view and download all of the CSCCE Community Profiles, including those in the first collection that was published in 2020, here. If you would like CSCCE to create a profile for your scientific community or organization, please contact us: info@cscce.org. About CSCCE The Center for Scientific Collaboration and Community Engagement (CSCCE) champions the importance of human infrastructure for effective collaboration in STEM. We provide training and support for the people who make scientific collaborations succeed at scale - and we also research the impact of these emerging roles. Find out more about us on our website: CSCCE.org
Herschel Exploitation of Local Galaxy Andromeda (HELGA) III: The Star Formation Law in M31
Creators: name: Ford, George P.
name: Gear, Walter K.
name: Smith, Matthew W. L.
name: Eales, Steve A.
name: Baes, Maarten
name: Bendo, George J.
name: Boquien, Mederic
name: Boselli, Alessandro
name: Cooray, Asantha R.
name: De Looze, Ilse
name: Fritz, Jacopo
name: Gentile, Gianfranco
name: Gomez, Haley L.
name: Gordon, Karl D.
name: Kirk, Jason
name: Lebouteiller, Vianney
name: O'Halloran, Brian
name: Spinoglio, Luigi
name: Verstappen, Joris
name: Wilson, Christine D.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present a detailed study of how the Star Formation Rate (SFR) relates to the interstellar medium (ISM) of M31 at ~140pc scales. The SFR is calculated using the far-ultraviolet and 24um emission, corrected for the old stellar population in M31. We find a global value for the SFR of 0.25+/-0.05Msun/yr and compare this with the SFR found using the total far-infrared (FIR) luminosity. There is general agreement in regions where young stars dominate the dust heating. Atomic hydrogen (HI) and molecular gas (traced by carbon monoxide, CO) or the dust mass is used to trace the total gas in the ISM. We show that the global surface densities of SFR and gas mass place M31 amongst a set of low-SFR galaxies in the plot of Kennicutt (1998b). The relationship between SFR and gas surface density is tested in six radial annuli across M31, assuming a power law relationship with index, N. The star formation law using total gas traced by HI and CO gives a global index of N=2.03+/-0.04, with a significant variation with radius; the highest values are observed in the 10kpc ring. We suggest that this slope is due to HI turning molecular at ~10Msun/pc2. When looking at H2 regions, we measure a higher mean SFR suggesting a better spatial correlation between H2 and SF. We find N~0.6 with consistent results throughout the disk - this is at the low end of values found in previous work and argues against a superlinear SF law on small scales.
description: 12 pages, 10 figures
Analysis of the circular track experiment measuring the one-way speed of light
Creators: name: Philip, Evan John
Publisher: name: arXiv
Year: 2012
Subjects: subject: Classical Physics (physics.class-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: All experiments attempting to verify the invariance of speed of light directly are based on two-way speed measurement. The challenge in one-way speed measurement, the requirement of spatially separated synchronised clocks, can be possibly circumvented by measuring the speed of light travelling in a closed path. An apparent violation of the invariance principle has been recently reported in the first experiment attempting to measure the one-way speed of light utilising this concept. This experiment is reanalysed here. It is found that the results of the experiment can be explained within the framework of relativity, without requiring any violation of the invariance principle.
description: 7 pages, 4 figures, corrections added (conclusion unchanged)
Grande Sinfonie No. 7 : [C-Dur]
Creators: name: Witt, Friedrich
Publisher: name: André
Year: 1810

description: Stimmen: Viol. I & II, Viole, Bass & Vc., 2 Fl., 2 Ob., 2 Fag., 2 Hörner, 2 Tromp., Pke., Gitarre ad lib.
description: Friedrich Witt
description: Nummer im Werkverzeichnis: FisW 7
Higgs Bosons in Warped Space, from the Bulk to the Brane
Creators: name: Frank, Mariana
name: Pourtolami, Nima
name: Toharia, Manuel
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In the context of warped extra-dimensional models with all fields propagating in the bulk, we address the phenomenology of a bulk scalar Higgs boson, and calculate its production cross section at the LHC as well as its tree-level effects on mediating flavor changing neutral currents. We perform the calculations based on two different approaches. First, we compute our predictions analytically by considering all the degrees of freedom emerging from the dimensional reduction (the infinite tower of Kaluza Klein modes (KK)). In the second approach, we perform our calculations numerically by considering only the effects caused by the first few KK modes, present in the 4-dimensional effective theory. In the case of a Higgs leaking far from the brane, both approaches give the same predictions as the effects of the heavier KK modes decouple. However, as the Higgs boson is pushed towards the TeV brane, the two approaches seem to be equivalent only when one includes heavier and heavier degrees of freedom (which do not seem to decouple). To reconcile these results it is necessary to introduce a type of higher derivative operator which essentially encodes the effects of integrating out the heavy KK modes and dresses the brane Higgs so that it looks just like a bulk Higgs.
description: 29 pages, 5 figures
Symmetry breaking gives rise to energy spectra of three states of matter
Creators: name: Bolmatov, Dima
name: Musaev, Edvard T.
name: Trachenko, K.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: A fundamental task of statistical physics is to start with a microscopic Hamiltonian, predict the system's statistical properties and compare them with observable data. A notable current fundamental challenge is to tell whether and how an interacting Hamiltonian predicts different energy spectra, including solid, liquid and gas phases. Here, we propose a new idea that enables a unified description of all three states of matter. We introduce a generic form of an interacting phonon Hamiltonian with ground state configurations minimising the potential. Symmetry breaking, from the group of rotations in reciprocal space to its subgroup, leads to emergence of energy gaps of shear excitations as a consequence of the Goldstone theorem, and readily results in the emergence of energy spectra of solid, liquid and gas phases.
description: 7 pages, 2 figures, 1 table
Platone e Plutarco: intrecci tematici tra il logos atlantico e il mito di Iside e Osiride
Creators: name: NIJHUIS, ERICA
Publisher: name: Universit� degli Studi di Milano
Year: 2011

description: This study investigates the relationship between Plato?s account on Atlantis (Timaeus- Critias) and the myth of Isis and Osiris so as it is conceived by Plutarch in the De Iside et Osiride, trying to highlight the ways Plato?s story influences Plutarch?s outlook, which at times differs from the vision that the same Plutarch shows to adhere to in the rest of his writings.
STUDIO LONGITUDINALE MULTICENTRICO PER LA VALUTAZIONE DI FATTORI PRENATALI E POSTNATALI PRECOCI CORRELABILI AL RISCHIO DI SOVRAPPESO E OBESIT� INFANTILE
Creators: name: GHAZANFAR, MARIA
Publisher: name: Universit� degli Studi di Milano
Year: 2015

description: Title: longitudinal and multicentre study and evaluation of the pre and early postnatal factors associated with the risk of childhood overweight and obesity. Location: Italy, Lombardia, centres for the monitoring of infants' body weight in Monza e Brianza ASL. Aim: evaluation of the anthropometric variations in children up to 6-7 months of life and their association with pre and postnatal factors. Study design and duration: multicentre cohort study. Subjects enrolled between March and October 2013 had been measured until the seventh month of life in four occasions. Inclusion criteria: mothers with children within 60 days of life, who attended the centres to monitor the growth of their children; the only exclusion criterion was the ignorance of the Italian language. Data collection: weight and length assessment, self-administration of a questionnaire. Statistical methods: 171 mother-child dyads. The anthropometric prenatal and parental data had been expressed as standard deviation score with the aim of removing the effects of age, sex and number of previous deliveries. The role of a set of covariates on the evolution of parental roles, breastfeeding and weaning has been analyzed with a generalised linear mixed model, based on binomial distribution and link logit. Weight growth (expressed as SDS) has been analyzed with an analogous linear mixed model, based on Gaussian distribution and identity link. Conclusions: the analysis showed that some prenatal factors and obstetrical variables, such as BMI and weight gain, have a direct role in determining the growth trends. These factors may be modified by the preventive approach that caracterises midwifery. Birthweight affects both maternal feeding choices for their children and growth trends. The study highlighted the role of father and health professionals of family care health centers, who can affect growth trend or growth related feeding choices, such as weaning timing.
title: СОВРЕМЕННОЕ СОСТОЯНИЕ ВОПРОСА КОМПЛЕКСНОЙ ЛУЧЕВОЙ ДИАГНОСТИКИ ОСТЕОМИЕЛИТА У ДЕТЕЙ И ПОДРОСТКОВ
title: CURRENT STATE OF COMPLEX RADIOLOGY ISSUE OF OSTEOMYELITIS IN CHILDREN AND ADOLESCENTS
Creators: name: Шолохова, Наталия Александровна
name: Ганиева, Алла Маратовна
name: Лежнев, Дмитрий Анатольевич
Publisher: name: Сургутский государственный университет
Year: 2019

description: Цель – по данным литературы оценить возможности лучевой диагностики остеомиелита у детей и подростков.
Материал и методы. Проведен анализ научной литературы на русском и английском языках с использованием баз
данных PubMed, MEDLINE, Medscape и eLIBRARY с глубиной поиска 6 лет. Выявлено 56 публикаций, из которых в ана-
лиз включено 14. Результаты. В структуре заболеваемости детского населения одно из ведущих мест среди гной-
но-воспалительных процессов занимает острый гематогенный остеомиелит. Успехи в лечении данного заболевания
выразились в снижении летальности детей с 45,0 % до 8,4 %, однако число рецидивов и осложнений достигает 68,0 %.
Переход острого процесса в подострую и хроническую стадии составляет около 40,6 % и представляет собой каче-
ственно новое заболевание с развитием тяжелых ортопедических осложнений. Доля осложнений острого гемато-
генного остеомиелита, которые включают нарушение роста в длину различных сегментов конечностей, варьирует-
ся от 3,0 % до 6,0 %, что обусловлено поражением зон роста и развитием ортопедических осложнений.
description: The aim of the study is to evaluate the possibilities of osteomyelitis radiology treatment in children and
adolescents. Material and methods. The analysis of the scientific literature over the last 6 years using the
databases PubMed, MEDLINE, Medscape and eLIBRARY. The 56 modern publications in Russian and English are
singled out, and 14 of them are included in the analysis. Results. Acute hematogenous osteomyelitis is one of the
most common infections that occur in children. Successful treatment of this disease resulted in a decrease in the
mortality rate of children from 45.0 % to 8.4 %, but the number of relapses and its complications reached 68.0 %.
The transition of the acute process to the subacute and chronic stages is about 40.6 % and represents a completely
new disease with the development of severe orthopedic complications. The proportion of complications of acute
hematogenous osteomyelitis such as growth disorder of various segments of the extremities ranges from 3.0 % to
6.0 %, which is caused by damage to the growth zones and orthopedic complications.
Nonlinear Color-Metallicity Relations of Globular Clusters. IV. Testing the Nonlinearity Scenario for Color Bimodality via HST/WFC3 u-band Photometry of M84 (NGC 4374)
Creators: name: Yoon, Suk-Jin
name: Sohn, Sangmo T.
name: Kim, Hak-Sub
name: Chung, Chul
name: Cho, Jaeil
name: Lee, Sang-Yoon
name: Blakeslee, John P.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Color distributions of globular clusters (GCs) in most massive galaxies are bimodal. Assuming linear color-to-metallicity conversions, bimodality is viewed as the presence of merely two GC subsystems with distinct metallicities, which serves as a critical backbone of various galaxy formation theories. Recent studies, however, revealed that the color-metallicity relations (CMRs) often used to derive GC metallicities (e.g., CMRs of g-z, V-I and C-T1) are in fact inflected. Such inflection can create bimodal color distributions if the underlying GC metallicity spread is simply broad as expected from the hierarchical merging paradigm of galaxy formation. In order to test the nonlinear-CMR scenario for GC color bimodality, the u-band photometry is proposed because the u-related CMRs (e.g., CMRs of u-g and u-z) are theoretically predicted to be least inflected and most distinctive among commonly used optical CMRs. Here, we present Hubble Space Telescope (HST)/WFC3 F336W (u-band) photometry of the GC system in M84, a giant elliptical in the Virgo galaxy cluster. Combining the u data with the existing HST ACS/WFC g and z data, we find that the u-z and u-g color distributions are different from the g-z distribution in a very systematic manner and remarkably consistent with our model predictions based on the nonlinear-CMR hypothesis. The results lend further confidence to validity of the nonlinear-CMR scenario as an explanation for GC color bimodality. There are some GC systems showing bimodal spectroscopic metallicity, and in such systems the inflected CMRs often create stronger bimodality in the color domain.
description: Accepted for publication in ApJ, 35 pages, 11 figures, 8 tables
Dissipation Layers in Rayleigh-Bénard Convection: A Unifying View
Creators: name: Petschel, K.
name: Stellmach, S.
name: Wilczek, M.
name: Lülff, J.
name: Hansen, U.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Boundary layers play an important role in controlling convective heat transfer. Their nature varies considerably between different application areas characterized by different boundary conditions, which hampers a uniform treatment. Here, we argue that, independent from boundary conditions, systematic dissipation measurements in Rayleigh-Bénard convection capture the relevant near-wall structures. By means of direct numerical simulations with varying Prandtl numbers, we demonstrate that such dissipation layers share central characteristics with classical boundary layers, but, in contrast to the latter, can be extended naturally to arbitrary boundary conditions. We validate our approach by explaining differences in scaling behavior observed for no-slip and stress-free boundaries, thus paving the way to an extension of scaling theories developed for laboratory convection to a broad class of natural systems.
A NANOTECHNOLOGY APPROACH FOR GLIOBLASTOMA TARGETED THERAPY
Creators: name: TAMBORINI, MATTEO
Publisher: name: Universit� degli Studi di Milano
Year: 2016

description: Glioblastoma multiforme (GBM) is an extremely aggressive type of glioma. Life expectancy is around two years after diagnosis, due to recidivism and to the presence of the blood brain barrier (BBB) restricting the amount of drugs which arrive at the residual cancer cells, thus contributing to chemotherapies failure. To overcome the impediment imposed by the BBB, we have investigated the use of nanotechnologies in synergy with radiotherapy as a prospective strategy for GBM treatment. We have used poly(lactic-co-glycolic acid) (PLGA) nanoparticles (PNP) conjugated to the peptide chlorotoxin (CTX), which has been shown to recognize and selectively bind to glioma cells. Silver nanoparticles have been encapsulated inside the functionalized nanoparticles (Ag-PNP-CTX), to allow detection of cellular uptake and quantification by means of confocal microscopy, both in vitro and in vivo. In vitro experiments, involving 3 different human glioblastoma cell lines, have shown that the cytoplasmic uptake of Ag-PNP-CTX is higher than that of non-functionalized nanoparticles. Experiments performed in vivo have shown high efficiency of Ag-NP-CTX particles in targeting tumor cells; however, they have been shown to be scarcely able to cross the blood brain barrier at the healthy brain level, where scattered metastatic cells are present too. A single x-rays administration on the whole brain, carried out twenty hours before the injection of the nanoparticles, has been shown to increase the levels of expression of the CTX targets MMP-2 e ClC-3. Moreover, through an alteration of BBB permeability, it has been shown to potentially increase the quantity of internalized Ag-PNP-CTX also in dispersed cells, and to lead to significant results in inhibiting tumor growth in vivo. Notably, the administration of Ag-PNP-CTX to irradiated tumor cells decreases the MMP-2 extracellular activity. By targeting scattered GBM cells and limiting MMP-2 activity, the synergic use of nanovectors conjugated with CTX and radiotherapy may represent an efficient therapeutic approach to GBM treatment.
Self-Supervised Learning for Solar Radio Spectrum Classification
Creators: name: Li, Siqi
name: Yuan, Guowu
name: Chen, Jian
name: Tan, Chengming
name: Zhou, Hao
Publisher: name: arXiv
Year: 2025
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Solar radio observation is an important way to study the Sun. Solar radio bursts contain important information about solar activity. Therefore, real-time automatic detection and classification of solar radio bursts are of great value for subsequent solar physics research and space weather warnings. Traditional image classification methods based on deep learning often require consid-erable training data. To address insufficient solar radio spectrum images, transfer learning is generally used. However, the large difference between natural images and solar spectrum images has a large impact on the transfer learning effect. In this paper, we propose a self-supervised learning method for solar radio spectrum classification. Our method uses self-supervised training with a self-masking approach in natural language processing. Self-supervised learning is more conducive to learning the essential information about images compared with supervised methods, and it is more suitable for transfer learning. First, the method pre-trains using a large amount of other existing data. Then, the trained model is fine-tuned on the solar radio spectrum dataset. Experiments show that the method achieves a classification accuracy similar to that of convolutional neural networks and Transformer networks with supervised training.
description: 13 pages, 8 figures
The Dunkl oscillator in the plane II : representations of the symmetry algebra
Creators: name: Genest, Vincent X.
name: Ismail, Mourad E. H.
name: Vinet, Luc
name: Zhedanov, Alexei
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: The superintegrability, wavefunctions and overlap coefficients of the Dunkl oscillator model in the plane were considered in the first part. Here finite-dimensional representations of the symmetry algebra of the system, called the Schwinger-Dunkl algebra sd(2), are investigated. The algebra sd(2) has six generators, including two involutions and a central element, and can be seen as a deformation of the Lie algebra u(2). Two of the symmetry generators, J_3 and J_2, are respectively associated to the separation of variables in Cartesian and polar coordinates. Using the parabosonic creation/annihilation operators, two bases for the representations of sd(2), the Cartesian and circular bases, are constructed. In the Cartesian basis, the operator J_3 is diagonal and the operator J_2 acts in a tridiagonal fashion. In the circular basis, the operator J_2 is block upper-triangular with all blocks 2x2 and the operator J_3 acts in a tridiagonal fashion. The expansion coefficients between the two bases are given by the Krawtchouk polynomials. In the general case, the eigenvectors of J_2 in the circular basis are generated by the Heun polynomials and their components are expressed in terms of the para-Krawtchouk polynomials. In the fully isotropic case, the eigenvectors of J_2 are generated by little -1 Jacobi or ordinary Jacobi polynomials. The basis in which the operator J_2 is diagonal is then considered. In this basis, the defining relations of the Schwinger-Dunkl algebra imply that J_3 acts in a block tridiagonal fashion with all blocks 2x2. The matrix elements of J_3 in this basis are given explicitly.
description: 33 pages
Andromeda Optical and Infrared Disk Survey I. New Insights in Wide-Field Near-IR Surface Photometry
Creators: name: Sick, Jonathan
name: Courteau, Stéphane
name: Cuillandre, Jean-Charles
name: McDonald, Michael
name: de Jong, Roelof
name: Tully, R. Brent
Publisher: name: arXiv
Year: 2013
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present wide-field near-infrared J and Ks images of the Andromeda Galaxy taken with WIRCam on the Canada-France-Hawaii Telescope (CFHT) as part of the Andromeda Optical and Infrared Disk Survey (ANDROIDS). This data set allows simultaneous observations of resolved stars and NIR surface brightness across M31's entire bulge and disk (within R=22 kpc). The primary concern of this work is the development of NIR observation and reduction methods to recover a uniform surface brightness map across the 3x1 degree disk of M31. This necessitates sky-target nodding across 27 WIRCam fields. Two sky-target nodding strategies were tested, and we find that strictly minimizing sky sampling latency does not maximize sky subtraction accuracy, which is at best 2% of the sky level. The mean surface brightness difference between blocks in our mosaic can be reduced from 1% to 0.1% of the sky brightness by introducing scalar sky offsets to each image. The true surface brightness of M31 can be known to within a statistical zeropoint of 0.15% of the sky level (0.2 mag arcsec sq. uncertainty at R=15 kpc). Surface brightness stability across individual WIRCam frames is limited by both WIRCam flat field evolution and residual sky background shapes. To overcome flat field variability of order 1% over 30 minutes, we find that WIRCam data should be calibrated with real-time sky flats. Due either to atmospheric or instrumental variations, the individual WIRCam frames have typical residual shapes with amplitudes of 0.2% of the sky after real-time flat fielding and median sky subtraction. We present our WIRCam reduction pipeline and performance analysis here as a template for future near-infrared observers needing wide-area surface brightness maps with sky-target nodding, and give specific recommendations for improving photometry of all CFHT/WIRCam programs. (Abridged)
description: 21 pages, 28 figures. Submitted to AJ
title: IMPROVED IRON STATUS IN WEANLING PIGS LEADS TO IMPROVED GROWTH PERFORMANCE IN THE SUBSEQUENT NURSERY PERIOD
Creators: name: Chevalier, Tyler
Publisher: name: University of Kentucky Libraries
Year: 2019

description: The objectives of this thesis were: 1) to assess the iron status of piglets, 2) to thoroughly evaluate the blood profile, growth performance, and tissue mineral concentration of young pigs during the pre and postweaning periods after receiving various dosages of iron (0, 50, 100, 200, and 300 mg iron) at birth, 3) as well as evaluate the effects of an additional iron injection before weaning on hematological measures, growth performance, and tissue mineral concentration postweaning. In the initial experiment, there was a 60% incidence of iron deficiency at weaning after administration of a 150 mg iron injection at birth. Also at weaning, hemoglobin concentration was negatively correlated with BW and BW gain (r = -0.53, P < 0.0001, and r = -0.60, P < 0.0001 respectively). In the second experiment, pigs that were not injected with iron at birth had a major reduction in hematological measures, growth performance, and tissue iron concentration until d 52 where iron status was recovered but growth was not. Overall, ADG was improved in a linear and quadratic manner (P = 0.02 and P = 0.01 respectively) as the iron dosage increased with the largest improvement from the 0 mg to 50 mg iron treatment. The improvement observed in ADG let to similar increases (P = 0.02 and P = 0.01 respectively) in final BW as iron dosage treatments increased. Hemoglobin (Hb) concentration improved (P = 0.01) with increasing injectable iron as early as d 1 and continued to d 38, thereafter (d 52) no differences in Hb concentration were observed. Iron concentration for all tissues (liver, spleen, heart, and kidneys) at weaning was greater (P ≤ 0.01) as the iron dosage increased. In the third experiment, pigs that were supplemented with an additional iron injection 4 days before weaning had an increased ADG for the overall experimental period (31 to 34 d). The improved ADG during the experiment led to a heavier (P < 0.001) final BW (~1 kg) for pigs injected with an additional iron injection. At weaning, pigs injected with a second iron injection had higher (P < 0.001) hemoglobin concentration and other complete blood count measures. The improved Hb concentration observed at weaning continued 14 days later (P ≤ 0.02). Additionally, liver iron concentration was greater (P = 0.02) at weaning for the pigs receiving an additional iron injection. In summary, the initial iron injection administered at birth may not be adequate to satisfy all individual iron requirements of piglets before weaning, however, hematological measurements and tissue iron concentration do improve as the iron dosage increases at birth. Furthermore, injecting an additional iron injection before weaning improves nursery growth performance.
description: Copyright © Tyler B. Chevalier 2019
Subordinate evaluations of high-performance managers
Creators: name: Bayer, Oxana
name: Krupskyi, Oleksandr
name: Bondarenko, Evgeniy
Publisher: name: figshare
Year: 2023
Subjects: Technology management
Business systems in context not elsewhere classified
Human resources management
Industrial and employee relations
Human resources and industrial relations not elsewhere classified

description: Purpose The study investigated the factors considered by subordinates when evaluating the productivity of their managers, in addition to how those factors influenced such feedback.
 Design/methodology/approach A questionnaire survey was conducted among participants. The results were processed using a cluster analysis (K-means method), the Mann–Whitney U test, and the χ2-Pearson test.
 Findings The survey results were used to categorize managers as highly productive, moderately productive, or lowly productive. Recommendations for how to increase productivity were then determined.
 Research limitations/implications The implication of our study in perspective research lies in particular in showing the mediating character of constructive feedback in subordinates' viewing managers as efficient. As for practice, knowing subordinates' feedback makes it possible for an organization to influence the quality of the supervisor-subordinate dyad. DTEK company has already put into practice the results of our study into corporate education and learning. In particular, recommendations for how to increase productivity (through giving constructive feedback, time to talk in private to an employee and expressing gratitude for good work) are discussed.
 Practical implications The results indicated that highly productive managers tended to professionally develop both themselves and their subordinates. They provided subordinates with constructive feedback as well as the opportunity to talk in person. These managers were also experts in the activities performed by their subordinates and showed gratitude for their accomplishments.
 Originality/value This study examined managerial efficacy as reviewed by subordinates. A theoretical analysis was conducted to outline the factors typically associated with managerial productivity (e.g. interpersonal skills, synchronizing projects, technical knowledge, and handling work-related frustration).
Electroweak Symmetry Breaking and the Higgs Boson: Confronting Theories at Colliders
Creators: name: Azatov, Aleksandr
name: Galloway, Jamison
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this review, we discuss methods of parsing direct and indirect information from collider experiments regarding the Higgs boson and describe simple ways in which experimental likelihoods can be consistently reconstructed and interfaced with model predictions in pertinent parameter spaces. Ultimately these methods are used to constrain a five-dimensional parameter space describing a model-independent framework for electroweak symmetry breaking. We review prevalent scenarios for extending the electroweak symmetry breaking sector relative to the Standard Model and emphasize their predictions for nonstandard Higgs phenomenology that could be observed in LHC data if naturalness is realized in particular ways. Specifically we identify how measurements of Higgs couplings can be used to imply the existence of new physics at particular scales within various contexts, highlighting some parameter spaces of interest in order to give examples of how the data surrounding the new state can most effectively be used to constrain specific models of weak scale physics.
description: Review article prepared for International Journal of Modern Physics A; arXiv version to be updated as new data becomes available. v3: Moriond 2013 update, references added. 48 pages, 12 figures
Topological classification with additional symmetries from Clifford algebras
Creators: name: Morimoto, Takahiro
name: Furusaki, Akira
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We classify topological insulators and superconductors in the presence of additional symmetries such as reflection or mirror symmetries. For each member of the 10 Altland-Zirnbauer symmetry classes, we have a Clifford algebra defined by operators of the generic (time-reversal, particle-hole, or chiral) symmetries and additional symmetries, together with gamma matrices in Dirac Hamiltonians representing topological insulators and superconductors. Following Kitaev's approach, we classify gapped phases of non-interacting fermions under additional symmetries by examining all possible distinct Dirac mass terms which can be added to the set of generators of the Clifford algebra. We find that imposing additional symmetries in effect changes symmetry classes and causes shifts in the periodic table of topological insulators and superconductors. Our results are in agreement with the classification under reflection symmetry recently reported by Chiu et al. Several examples are discussed including a topological crystalline insulator with mirror Chern numbers and mirror superconductors.
description: 18 pages
Parasitic interference in nulling interferometry
Creators: name: Matter, Alexis
name: Defrère, Denis
name: Danchi, William C.
name: Lopez, Bruno
name: Absil, Olivier
Publisher: name: arXiv
Year: 2013
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Nulling interferometry aims to detect faint objects close to bright stars. Its principle is to produce a destructive interference along the line-of-sight so that the stellar flux is rejected, while the flux of the off-axis source can be transmitted. In practice, various instrumental perturbations can degrade the nulling performance. Any imperfection in phase, amplitude, or polarization produces a spurious flux that leaks to the interferometer output and corrupts the transmitted off-axis flux. One of these instrumental pertubations is the crosstalk phenomenon, which occurs because of multiple parasitic reflections inside transmitting optics, and/or diffraction effects related to beam propagation along finite size optics. It can include a crosstalk of a beam with itself, and a mutual crosstalk between different beams. This can create a parasitic interference pattern, which degrades the intrinsic transmission map - or intensity response - of the interferometer. In this context, we describe how this instrumental effect impairs the performance of a Bracewell interferometer. A simple formalism is developed to derive the corresponding modified intensity response of the interferometer, as a function of the two parameters of interest: the crosstalk level (or contamination rate) and the phase shift between the primary and secondary - parasitic - beams. We then apply our mathematical approach to a few scientific cases, both analytically and using the GENIEsim simulation software, adapted to handle coherent crosstalk. Our results show that a coherent crosstalk level of about 1% implies a 20% drop of the SNR at most. Careful attention should thus be paid to reduce the crosstalk level inside an interferometric instrument and ensure an instrumental stability that provides the necessary sensitivity through calibration procedures.
description: 10 pages, 7 figures
Zurek's envariance derivation of Born's rule and measurement
Creators: name: Herbut, Fedor
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Zurek's derivation of Born's rule using envariance (invariance due to entanglement) is considered to capture the probability in full generality, but only as applied to measurement of a quantum observable. Contrariwise, textbook formulations of Born's rule begin with a pure state of a closed, undivided system. The task of this study is to show that a rearrangement of the Zurek approach is possible in which the latter is viewed as giving the probabilities for Schmidt states of an arbitrary composite state vector, and afterwards it is extended to probabilities in a closed, undivided system. This is achieved by determining simultaneously probability and measurement based on the fact that the physical meaning of probability and that of measurement are inextricably dependent on each other.
description: 14 pages, no figures
RDA national PID strategies WG: final outputs and the way forward
Creators: name: Miyairi, Nobuko
Publisher: name: Zenodo
Year: 2023
Subjects: persistent identifiers
open science
national PID strategies

description: The RDA National PID Strategies Working Group was initiated in December 2021 and delivered its final outputs as Guide and Checklist with 9 country case studies. This talk overviews their final outputs and emphasizes that such standardized guides and checklists are helpful for all stakeholders to emulate these efforts and understand the PID diversity—which is critical to achieving FAIR principles. At the end, checklists developed by the PARSEC data strand team are also introduced to make a case. This presentation was given during Session H1 Practices of collaboration, data, and software of research in the community at the Japan Open Science Summit 2023.
description: This presentation is a contribution from the PARSEC team. PARSEC is a project sponsored by the Belmont Forum as part of its Collaborative Research Action (CRA) on Science-Driven e-Infrastructures Innovation (SEI), with funding from FAPESP, the ANR, JST and the NSF, with collaborators from Australia, and support from the synthesis centre CESAB of the French Foundation for Research on Biodiversity.
Oscillations in turbulence-condensate system
Creators: name: Miller, Pearson
name: Vladimirova, Natalia
name: Falkovich, Gregory
Publisher: name: arXiv
Year: 2013
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: We consider developed turbulence in the Gross-Pitaevsky model where condensate appears due to an inverse cascade. Despite being fully turbulent, the system demonstrates non-decaying periodic oscillations around a steady state, when turbulence and condensate periodically exchange a small fraction of waves. We show that these collective oscillations are not of a predator-prey type, as was suggested earlier; they are due to phase coherence and anomalous correlations imposed by the condensate.
description: 4 pages, 5 figures
The Prediction Of The Performance Of Road Sub-Bases Under Construction Traffic By Shear-Box Tests
Creators: name: Pike, D
Publisher: name: London South Bank University
Year: 1985

description: A sub-base must, inter alia, provide a working platform on which the materials for upper pavement layers can be transported, laid and compacted. there have been many cases in the UK where this has not been achieved because of the inadequate shear strengths of some granular sub-bases, especially in wet weather conditions. Substantial benefits would arise if a reliable means of identifying adequate local materials could be standardized. The thesis begins with a review of the literature and completed research. A programme of trials and testing is then described, and Tt is shown that a shear-box test can be used to characterize granular sub-bases in terms of their ability to resist deformation resulting from the passage of the tires of heavy lorries. From the findings of these studies it is recommended that a sub-base haying a thickness of 150 mm and underlain by a capping layer should be able to withstand 1000 standard axles of lorry traffic without accumulating more than 30 mm of surface deformation measured from original level. To meet this requirement the sub-base should have a level of shear strength (expressed as Peak Shear Stress Ratio) exceeding 2.4. Some materials with PSSR values in the range 1.9 to 2.4 can give satisfactory performance, but this should be checked with a preliminary trafficking trial. Information is given on the precision of the shear-box test. A preliminary assessment has also been made of other measures of sub-base stability: the CBR test, the Clegg Impactometer, the Dynamic Cone Penetrometer, the Plate Bearing Test and the Benkelman Beam.
title: Measurement of Turbidity, Suspended Sediments and Nutrients in Three Rivers that Drain to the Achang Preserve from the Manell Watershed, Guam
Creators: name: Pait, Anthony S.
name: Whitman, William M.C.
name: Hartwell, S. Ian
name: Whitall, David R.
name: Apeti, Dennis A.
Publisher: name: National Centers for Coastal Ocean Science (U.S.)
Year: 2019

description: NOAA Technical Memorandum NOS NCCOS 268
Correlation effects in insulating surface nanostructures
Creators: name: Mazurenko, V. V.
name: Iskakov, S. N.
name: Rudenko, A. N.
name: Kashin, I. V.
name: Sotnikov, O. M.
name: Valentyuk, M. V.
name: Lichtenstein, A. I.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study the role of static and dynamical Coulomb correlation effects on the electronic and magnetic properties of individual Mn, Fe and Co adatoms deposited on the CuN surface. For these purposes, we construct a realistic Anderson model, solve it by using finite-temperature exact diagonalization method and compare the calculated one-particle spectral functions with the LDA+$U$ densities of states. In contrast to Mn/CuN and Fe/CuN, the cobalt system tends to form the electronic excitations at the Fermi level. Based on the calculated magnetic response functions, the relative relaxation times for the magnetic moments of impurity orbitals are estimated. To study the effect of the dynamical correlations on the exchange interaction in nanoclusters, we solve the two-impurity Anderson model for the Mn dimer on the CuN surface. It is found that the experimental exchange interaction can be well reproduced by employing $U$=3 eV, which is two times smaller than the value used in static mean-field LDA+$U$ calculations. This suggests on important role of dynamical correlations in the interaction between adatoms on a surface.
description: 8 pages, 8 figures