cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Degradation Pathway of Ozone Oxidation of Phenols and Chlorophenols as Followed by LC-MS-TOF
Creators: name: Oputu, Ogheneochuko Utieyin
name: Fatoki, Olalekan Siyabonga
name: Opeolu, Beatrice Olutoyin
name: Akharame, Michael Ovbare
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Biochemistry
subject: Physical Sciences not elsewhere classified
subject: Microbiology
subject: FOS: Biological sciences
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Biological Sciences not elsewhere classified
subject: Infectious Diseases
subject: FOS: Health sciences

description: This contribution summarizes the temporal intermediates produced during the ozonation of phenol, 2-chlorophenol, 4-chlorophenol and 2,4-dichlorophenol, as followed by liquid chromatography coupled to a time of flight mass spectrometer (LC-MS-TOF). A 2 × 10−3 M solution of the phenolic compounds was ozonated in a sintered glass reactor at an ozone dose of 0.14 mg/min (O2/O3 flow 10 mL/min). Identified intermediates showed that catechol pathway was the predominant route for phenol oxidation with acrylic acid being the end product. Hydroxylative dechlorination of 2-chlorophenol also gave catechol, and the reaction products were similar to that of phenol. Hydroxylation and ring opening via the 4-chlorocatechol pathways were the predominant route for the ozonation of 4-chlorophenol, while 2,4-dichlorophenol followed both hydroxylation and hydroxylative dechlorination mechanism. Several novel intermediates and coupling products were identified and reaction schemes leading to breakdown products are provided for each phenolic compound.
КОГНИТИВНЫЕ МЕХАНИЗМЫ ШКОЛЬНИКОВ В УСЛОВИЯХ ЦИФРОВИЗАЦИИ
Creators: name: Елшанский Сергей Петрович
Publisher: name: Гуманитарные исследования. Педагогика и психология
Year: 2020
Subjects: когнитивные механизмы
когнитивная эффективность обучения
влияние цифровизации на когнитивную сферу
гаджетизация
трудности обучения
среднее образование

description: В статье обсуждается вопрос влияния цифровизации на когнитивные механизмы современных школьников; представлен анализ значимых в аспекте обучения когнитивных механизмов; показано, что наиболее значимыми для обеспечения когнитивной эффективности обучения являются механизмы долговременной памяти и учебного внимания. Обсуждаются уровень исследованности проблемы и специфика научных работ в обозначенной сфере; сделан вывод, что научный интерес к когнитивным механизмам в обучении школьников в современной науке присутствует, но исследования при этом имеют эклектичный и несистемный характер, при этом когнитивные механизмы часто рассматриваются в аспектах возможности формирования какой-то специфической учебной компетенции или появления какой-то специфической трудности обучения. Проанализировано позитивное и негативное влияние цифровизации на когнитивную сферу школьников и когнитивную эффективность их обучения; отмечено, что перестройка современного среднего образования очевидно не успевает за развитием цифровизации, не всегда учитываются реалии современного информационного мира, часто процесс обучения опирается на устоявшиеся годами стереотипы и нормы; при этом отмечено, что влияние цифровизации на когнитивные механизмы школьников можно разделить на два направления: влияние неучебного использования гаджетов, в том числе и во время учебы, и влияние цифровых технологий образования, используемых в учебном процессе; описаны возможные пути снижения влияния негативных факторов цифровизации на когнитивные механизмы школьников; сделан вывод о необходимости научных исследований в обозначенной сфере; отмечено, что необходимы системные междисциплинарные исследования влияния цифровизации на учебный процесс и, в частности, на значимые для учебы когнитивные механизмы.
ИЗУЧЕНИЕ ОСОБЕННОСТЕЙ ЦВЕТОВОСПРЯТИЯ И СТРУКТУРЫ ЛИЧНОСТИ ЧЕЛОВЕКА ПО ПРОЕКТИВНОМУ ТЕСТУ Г. ФРИЛИНГА
Creators: name: Михальчи Екатерина Владимировна
Publisher: name: Гуманитарные исследования. Педагогика и психология
Year: 2020
Subjects: психология цвета
тест Г. Фрилинга
цветовые предпочтения
цветовая грамотность
структура личности

description: В статье представлены результаты изучения особенностей цветовосприятия у респондентов и проведено определение их структуры личности на основании психоаналитического теста «Цветовое зеркало» немецкого психолога Г. Фрилинга. Особенности восприятия цветов и их оттенков и их воздействие на психоэмоциональное состояние человека изучаются во многих направлениях психологической науки и в других смежных областях: психологии цвета, арт-терапии, дифференциальной психологии, психотерапии, цветотерапии, психофизиологии профессиональной деятельности и др. В ходе исследования были определены уровни развития визуальных и когнитивных способностей к восприятию цветов и их оттенков у респондентов. При нормальном уровне визуальных возможностей восприятия цветов и их оттенков большинство респондентов имеют когнитивные ограничения в их восприятии; не знают названия многих оттенков и не могут их различать. Применяемые методики для определения индивидуальных цветовых предпочтений позволили разделить выборку на группы согласно личностным типам и чертам характера. Методики З. А. Киреевой «Цветовая палитра», Г. Фрилинга «Цветовое зеркало» и описание любимого цвета показали наличие связей и согласованность в совместном применении, что позволяет их эффективно использовать в психологическом консультировании и в других областях практической психологии.
Gravitational Waves as a Big Bang Thermometer
Creators: name: Ringwald, Andreas
name: Schütte-Engel, Jan
name: Tamarit, Carlos
Publisher: name: Deutsches Elektronen-Synchrotron, DESY, Hamburg
Year: 2020

description: There is a guaranteed background of stochastic gravitational waves produced in the thermal plasma in the early universe. Its energy density per logarithmic frequency interval scales with the maximum temperature $T_{\rm max}$ which the primordial plasma attained at the beginning of the standard hot big bang era. It peaks in the microwave range, at around $80\,{\rm GHz}\,[106.75/g_{*s}(T_{\rm max})]^{1/3}$, where $g_{*s}(T_{\rm max})$ is the effective number of entropy degrees of freedom in the primordial plasma at $T_{\rm max}$. We present a state-of-the-art prediction of this Cosmic Gravitational Microwave Background (CGMB) for general models, and carry out calculations for the case of the Standard Model (SM) as well as for several of its extensions. On the side of minimal extensions we consider the Neutrino Minimal SM ($\nu$MSM) and the SM - Axion - Seesaw - Higgs portal inflation model (SMASH), which provide a complete and consistent cosmological history including inflation. As an example of a non-minimal extension of the SM we consider the Minimal Supersymmetric Standard Model (MSSM). Furthermore, we discuss the current upper limits and the prospects to detect the CGMB in laboratory experiments and thus measure the maximum temperature and the effective number of degrees of freedom at the beginning of the hot big bang.
title: From Pandemic Alternative to Purposeful Archive: Student Research Reaches New Audiences in Misericordia Digital Commons
Creators: name: Cech, Maureen
Publisher: name: eScholarship@UMassChan
Year: 2021

description: Since spring 2020, higher education has required alternatives both day-to-day operations and its most cherished traditions. Student Research Poster Day is a spring tradition at Misericordia when (primarily) graduating seniors from each college share the results of semester- and year-long research projects with the campus community. Students—many assisting faculty mentors—have the opportunity to explain their findings and describe research challenges and surprises in a conference-like poster session. Misericordia Digital Commons offered a virtual solution for Spring 2020 and 2021 when face-to-face events were not ideal due to the pandemic. Originally viewed as a temporary alternative to the preferred in-person event, making this student research available to a global audience has resulted in enormous success for the repository, Misericordia’s students, and the institution by showcasing Misericordia’s commitment to undergraduate research opportunities.
title: Technical Reports in the Repository: Syncing a unique grey literature collection in multiple library systems
Creators: name: Jackson, Esther Marie
name: Bielskas, Amanda
name: Holmes, Emily
name: Wacker, Melanie
Publisher: name: eScholarship@UMassChan
Year: 2021

description: Academic Commons is the digital repository of Columbia University and its affiliated institutions. Currently over 32,000 works are accessible through this portal. However, finding new ways to add unique collections and their metadata to the institutional repository (IR) is a constant challenge. One of those unique collections are the Lamont Doherty Earth Observatory Technical Reports, a set of scientific geoscience reports dating from 1949 to 2003. A cross-departmental team at Columbia University Libraries set out to digitize 298 of these technical papers comprising 32,597 pages and including 151 foldouts of various sizes. Metadata was already largely available through WorldCat and for this reason a workflow was devised that enabled the team to reuse that existing MARC metadata from OCLC WordCat and at the same time increase access and visibility of these resources by making them digitally available through WorldCat, HathiTrust, CLIO, (Columbia’s local integrated library system (ILS)), Internet Archive, and Academic Commons (the IR). This new workflow involves digitization of the original print reports, cataloging of the physical and digital copies, dynamically cross-walking (via HySync, an internal application) the MARC metadata from the ILS to a MODS-based format in Academic Commons, where the reports were assigned DOIs and made available for download. Since the collection was made available in the IR in September of 2020, the items have been viewed over 6,000 times and downloaded nearly 3,000 times. This presentation will outline the individual steps comprising the new workflow, from selection over digitization and cataloging to discovery, the benefits enabled by this collaboration across departmental lines, but also address the challenges encountered along the way.
title: Trans Inclusion Through Name Change Policies in Institutional Repositories
Creators: name: Krueger, Stephen
Publisher: name: eScholarship@UMassChan
Year: 2021

description: As awareness and acceptance of trans and gender diverse people grows, scholarly publishing has seen a movement to support trans authors through inclusive name change policies. This work mainly happens through trans scholars approaching publishers and requesting these changes. Sometimes this results in a new policy that supports the authors and protects them from being outed to co-authors and readers; other times, the policies are less than ideal or do not change at all. While most of the focus is on publishers and organizations, institutional repositories can and should take similar steps to respect and protect their trans authors. This presentation will go over the reasons why it is important to take steps to protect authors in this way, then walk through the background of the push to make scholarly publishing more trans-inclusive through author name change policies. It will then address practical considerations for developing such policies for institutional repositories. Specific issues include the logistics of author name changes, how to inform authors of their options, and how to minimize outing trans authors.
title: Dueling Repository Woes: Greater Needs, Fewer In-House Experts
Creators: name: Paquette, Michelle
name: Menchen, Sadie
Publisher: name: eScholarship@UMassChan
Year: 2021

description: This session will serve as a brief case study of how one college special collections unit navigated a particularly transitional year in which they faced an unparalleled increase in demand for digital collections access alongside a reduction of in-house technical support for their digital repository. As at other institutions, the COVID-19 pandemic majorly impacted the operations of Smith College Special Collections (SCSC), with a switch to remote teaching, cancelled fellowship visits, and physical collections that were suddenly inaccessible. To provide the remote access to archives and special collections needed to facilitate teaching and research, SCSC spun up a digitization-on-demand workflow. Using a pseudo “assembly line” model, SCSC digitized over 70,000 pages of material from over 1200 digitization requests between August 2020 and July 2021.
KEYNOTE ABSTRACTS FOR INTERNATIONAL WEBINAR ON ENT AND OTOLARYNGOLOGY (OTOLARYNGOLOGY 2020)
Creators: name: Dr.David Mushota
Publisher: name: Zenodo
Year: 2020
Subjects: OTOLARYNGOLOGY 2020
LARIX INTERNATIONAL
INTERNATIONAL WEBINAR

description: KEYNOTE ABSTRACTS FOR INTERNATIONAL WEBINAR ON ENT AND OTOLARYNGOLOGY (OTOLARYNGOLOGY 2020)
Negative running prevents eternal inflation
Creators: name: Kinney, William H.
name: Freese, Katherine
Publisher: name: arXiv
Year: 2014
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Current data from the Planck satellite and the BICEP2 telescope favor, at around the $2 σ$ level, negative running of the spectral index of curvature perturbations from inflation. We show that for negative running $α< 0$, the curvature perturbation amplitude has a maximum on scales larger than our current horizon size. A condition for the absence of eternal inflation is that the curvature perturbation amplitude always remain below unity on superhorizon scales. For current bounds on $n_{\rm S}$ from Planck, this corresponds to an upper bound of the running $α< - 4 \times 10^{-5}$, so that even tiny running of the scalar spectral index is sufficient to prevent eternal inflation from occurring, as long as the running remains negative on scales outside the horizon. In single-field inflation models, negative running is associated with a finite duration of inflation: we show that eternal inflation may not occur even in cases where inflation lasts as long as $10^4$ e-folds.
description: V2: Version submitted to JCAP
Superisometries and integrability of superstrings
Creators: name: Wulff, Linus
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: For type II supergravity backgrounds with superisometries the corresponding transformations and conserved currents for the superstring are constructed up to fourth order in $Θ$. It is then shown how, for certain backgrounds related to near horizon geometries of intersecting branes, the components of the superisometry current can be used to construct a Lax connection demonstrating the classical integrability of the string in these backgrounds. This includes examples of $AdS_2$ and $AdS_3$ backgrounds with a $D(2,1;α)$ isometry group which have not previously been studied from an integrability point of view. The construction of the Lax connection is carried out up to second order in $Θ$.
description: 31 pages; v2: References added; v3: Published version
Global Flows in Quantum Gravity
Creators: name: Christiansen, Nicolai
name: Knorr, Benjamin
name: Pawlowski, Jan M.
name: Rodigast, Andreas
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study four-dimensional quantum gravity using non-perturbative renormalization group methods. We solve the corresponding equations for the fully momentum-dependent propagator, Newton's coupling and the cosmological constant. For the first time, we obtain a global phase diagram where the non-Gaussian ultraviolet fixed point of asymptotic safety is connected via smooth trajectories to a classical infrared fixed point. The theory is therefore ultraviolet complete and deforms smoothly into classical gravity as the infrared limit is approached.
description: 18 pages,7 figures, typos in introduction and appendix A fixed
Uniform Diophantine approximation related to $b$-ary and $β$-expansions
Creators: name: Bugeaud, Yann
name: Liao, Lingmin
Publisher: name: arXiv
Year: 2014
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: Let $b\geq 2$ be an integer and $\hv$ a real number. Among other results, we compute the Hausdorff dimension of the set of real numbers $ξ$ with the property that, for every sufficiently large integer $N$, there exists an integer $n$ such that $1 \le n \le N$ and the distance between $b^n ξ$ and its nearest integer is at most equal to $b^{-\hv N}$. We further solve the same question when replacing $b^nξ$ by $T^n_βξ$, where $T_β$ denotes the classical $β$-transformation.
description: 25 pages
A Highly Consistent Framework for the Evolution of the Star-Forming "Main Sequence" from z~0-6
Creators: name: Speagle, Joshua S.
name: Steinhardt, Charles L.
name: Capak, Peter L.
name: Silverman, John D.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Using a compilation of 25 studies from the literature, we investigate the evolution of the star-forming galaxy (SFG) Main Sequence (MS) in stellar mass and star formation rate (SFR) out to $z \sim 6$. After converting all observations to a common set of calibrations, we find a remarkable consensus among MS observations ($\sim 0.1$ dex 1$σ$ interpublication scatter). By fitting for time evolution of the MS in bins of constant mass, we deconvolve the observed scatter about the MS within each observed redshift bins. After accounting for observed scatter between different SFR indicators, we find the width of the MS distribution is $\sim 0.2$ dex and remains constant over cosmic time. Our best fits indicate the slope of the MS is likely time-dependent, with our best fit $\log\textrm{SFR}(M_*,t) = \left(0.84 \pm 0.02 - 0.026 \pm 0.003 \times t\right) \log M_* - \left(6.51 \pm 0.24 - 0.11 \pm 0.03 \times t\right)$, with $t$ the age of the Universe in Gyr. We use our fits to create empirical evolutionary tracks in order to constrain MS galaxy star formation histories (SFHs), finding that (1) the most accurate representations of MS SFHs are given by delayed-$τ$ models, (2) the decline in fractional stellar mass growth for a "typical" MS galaxy today is approximately linear for most of its lifetime, and (3) scatter about the MS can be generated by galaxies evolving along identical evolutionary tracks assuming an initial $1σ$ spread in formation times of $\sim 1.4$ Gyr.
description: 59 pages, 10 tables, 12 figures, accepted to ApJS; v2, slight changes to text, added new figure and fits
EXPRESSION OF THE CONCEPTS OF "BEAUTY/UGLINESS" IN ENGLISH AND UZBEK LANGUAGES PHRASEOLOGICAL UNITS AND PAREMIOLOGY
Creators: name: Tojiboev, Ilkhomjon
Publisher: name: Zenodo
Year: 2023

description: It is known that the phraseological fund of the language is an important source of information reflecting the customs, lifestyle, culture and mentality of a certain people. Because the myths, customs, traditions, and customs of a certain nation are reflected in phraseology.
The meaning of WISE colours - I. The Galaxy and its satellites
Creators: name: Nikutta, Robert
name: Hunt-Walker, Nicholas
name: Nenkova, Maia
name: Ivezic, Zeljko
name: Elitzur, Moshe
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Through matches with the Sloan Digital Sky Survey (SDSS) catalogue we identify the location of various families of astronomical objects in WISE colour space. We identify reliable indicators that separate Galactic/local from extragalactic sources and concentrate here on the objects in our Galaxy and its closest satellites. We develop colour and magnitude criteria that are based only on WISE data to select asymptotic giant branch (AGB) stars with circumstellar dust shells, and separate them into O-rich and C-rich classes. With these criteria we produce an all-sky map for the count ratio of the two populations. The map reveals differences between the Galactic disc, the Magellanic Clouds and the Sgr Dwarf Spheroidal galaxy, as well as a radial gradient in the Large Magellanic Cloud (LMC) disc. We find that the C:O number ratio for dusty AGB stars increases with distance from the LMC centre about twice as fast as measured for near-IR selected samples of early AGB stars. Detailed radiative transfer models show that WISE colours are well explained by the emission of centrally heated dusty shells where the dust has standard properties of interstellar medium (ISM) grains. The segregation of different classes of objects in WISE colour space arises from differences in properties of the dust shells: those around young stellar objects have uniform density distributions while in evolved stars they have steep radial profiles.
description: 20 pages, 21 figures, 3 tables. Published in MNRAS. Electronic table C1 available as model_tables.dat in the source archive. This version is as close as possible to the published version, and implements comments we received from the community, and corrections made in the proofs
N=4 supersymmetric Yang-Mills theories in AdS_3
Creators: name: Kuzenko, Sergei M.
name: Tartaglino-Mazzucchelli, Gabriele
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: For all types of N=4 anti-de Sitter (AdS) supersymmetry in three dimensions, we construct manifestly supersymmetric actions for Abelian vector multiplets and explain how to extend the construction to the non-Abelian case. Manifestly N=4 supersymmetric Yang-Mills (SYM) actions are explicitly given in the cases of (2,2) and critical (4,0) AdS supersymmetries. The N=4 vector multiplets and the corresponding actions are then reduced to (2,0) AdS superspace, in which only N=2 supersymmetry is manifest. Using the off-shell structure of the N=4 vector multiplets, we provide complete N=4 SYM actions in (2,0) AdS superspace for all types of N=4 AdS supersymmetry. In the case of (4,0) AdS supersymmetry, which admits a Euclidean counterpart, the resulting N=2 action contains a Chern-Simons term proportional to q/r, where r is the radius of AdS_3 and q is the R-charge of a chiral scalar superfield. The R-charge is a linear inhomogeneous function of X, an expectation value of the N=4 Cotton superfield. Thus our results explain the mysterious structure of N=4 supersymmetric Yang-Mills theories on S^3 discovered in arXiv:1401.7952. In the case of (3,1) AdS supersymmetry, which has no Euclidean counterpart, the SYM action contains both a Chern-Simons term and a chiral mass-like term. In the case of (2,2) AdS supersymmetry, which admits a Euclidean counterpart, the SYM action has no Chern-Simons and chiral mass-like terms.
description: 45 pages; V3: minor corrections, version published in JHEP
Inflationary Tensor Perturbations After BICEP
Creators: name: Caligiuri, Jerod
name: Kosowsky, Arthur
Publisher: name: arXiv
Year: 2014
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The measurement of B-mode polarization of the cosmic microwave background at large angular scales by the BICEP experiment suggests a stochastic gravitational wave background from early-universe inflation with a surprisingly large amplitude. The power spectrum of these tensor perturbations can be probed both with further measurements of the microwave background polarization at smaller scales, and also directly via interferometry in space. We show that sufficiently sensitive high-resolution B-mode measurements will ultimately have the ability to test the inflationary consistency relation between the amplitude and spectrum of the tensor perturbations, confirming their inflationary origin. Additionally, a precise B-mode measurement of the tensor spectrum will predict the tensor amplitude on solar system scales to 20% accuracy for an exact power law tensor spectrum, so a direct detection will then measure the running of the tensor spectral index to high precision.
description: 5 pages, 1 figure version 3 has been accepted for publication in PRL, typos corrected, and references added
Relativistic Classical Integrable Tops and Quantum R-matrices
Creators: name: Levin, A.
name: Olshanetsky, M.
name: Zotov, A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: Quantum Algebra (math.QA)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We describe classical top-like integrable systems arising from the quantum exchange relations and corresponding Sklyanin algebras. The Lax operator is expressed in terms of the quantum non-dynamical $R$-matrix even at the classical level, where the Planck constant plays the role of the relativistic deformation parameter in the sense of Ruijsenaars and Schneider (RS). The integrable systems (relativistic tops) are described as multidimensional Euler tops, and the inertia tensors are written in terms of the quantum and classical $R$-matrices. A particular case of ${\rm gl}_N$ system is gauge equivalent to the $N$-particle RS model while a generic top is related to the spin generalization of the RS model. The simple relation between quantum $R$-matrices and classical Lax operators is exploited in two ways. In the elliptic case we use the Belavin's quantum $R$-matrix to describe the relativistic classical tops. Also by the passage to the noncommutative torus we study the large $N$ limit corresponding to the relativistic version of the nonlocal 2d elliptic hydrodynamics. Conversely, in the rational case we obtain a new ${\rm gl}_N$ quantum rational non-dynamical $R$-matrix via the relativistic top, which we get in a different way -- using the factorized form of the RS Lax operator and the classical Symplectic Hecke (gauge) transformation. In particular case of ${\rm gl}_2$ the quantum rational $R$-matrix is 11-vertex. It was previously found by Cherednik. At last, we describe the integrable spin chains and Gaudin models related to the obtained $R$-matrix.
description: 36 pages, minor corrections
Density response in Weyl metals
Creators: name: Panfilov, I.
name: Burkov, A. A.
name: Pesin, D. A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We report on a study of the density response in doped Weyl semimetals or Weyl metals in the presence of an external magnetic field. We show that the applied field leads to a contribution to the density response, which is topological in nature and is closely related to the phenomenon of chiral anomaly. This contribution manifests in a nonanalytic nonclassical correction to the electronic compressibility and the plasmon frequency, proportional to the magnitude of the magnetic field. Such a nonanalytic correction to the electronic compressibility is a smoking-gun feature of Weyl metals, which clearly distinguishes them from ordinary ferromagnetic metals.
description: 7+ pages, 1 figure, published version
Signatures of Rashba Spin-Orbit Interaction in Charge and Spin Properties of Quantum Hall Systems
Creators: name: Hernangomez-Perez, Daniel
name: Florens, Serge
name: Champel, Thierry
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We study the local equilibrium properties of two-dimensional electron gases at high magnetic fields in the presence of random smooth electrostatic disorder, Rashba spin-orbit coupling, and the Zeeman interaction. Using a systematic magnetic length ($l_B$) expansion within a Green's function framework we derive quantum functionals for the local spin-resolved particle and current densities which can be useful for future studies combining disorder and mean-field electron-electron interaction in the quantum Hall regime. We point out that the spin polarization presents a peculiar spatial dependence which can be used to determine the strength of the Rashba coupling by local probes. The spatial structure of the current density, consisting of both compressible and incompressible contributions, also essentially reflects the effects of Rashba spin-orbit interaction on the energy spectrum. We show that in the semiclassical limit $l_B \rightarrow 0$ the local Hall conductivity remains, however, still quantized in units of $e^2/h$ for any finite strength of the spin-orbit interaction. In contrast, it becomes half-integer quantized when the latter is infinite, a situation which corresponds to a disordered topological insulator surface consisting of a single Dirac cone. Finally, we argue how to define at high magnetic fields a spin Hall conductivity related to a dissipationless angular momentum flow, which is characterized by a sequence of plateaus as a function of the inverse magnetic field (thus free of resonances).
description: 18 pages + 4 figures, typos corrected and note added in Sec. VI, corresponds to the published version
Light Echoes from Eta Carinae's Great Eruption: Spectrophotometric Evolution and the Rapid Formation of Nitrogen-rich Molecules
Creators: name: Prieto, J. L.
name: Rest, A.
name: Bianco, F. B.
name: Matheson, T.
name: Smith, N.
name: Walborn, N. R.
name: Hsiao, E. Y.
name: Chornock, R.
name: Alvarez, L. Paredes
name: Campillay, A.
name: Contreras, C.
name: Gonzalez, C.
name: James, D.
name: Knapp, G. R.
name: Kunder, A.
name: Margheim, S.
name: Morrell, N.
name: Phillips, M. M.
name: Smith, R. C.
name: Welch, D. L.
name: Zenteno, A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present follow-up optical imaging and spectroscopy of one of the light echoes of $η$ Carinae's 19th-century Great Eruption discovered by Rest et al. (2012). By obtaining images and spectra at the same light echo position between 2011 and 2014, we follow the evolution of the Great Eruption on a three-year timescale. We find remarkable changes in the photometric and spectroscopic evolution of the echo light. The $i$-band light curve shows a decline of $\sim 0.9$ mag in $\sim 1$ year after the peak observed in early 2011 and a flattening at later times. The spectra show a pure-absorption early G-type stellar spectrum at peak, but a few months after peak the lines of the [Ca II] triplet develop strong P-Cygni profiles and we see the appearance of [Ca II] 7291,7324 doublet in emission. These emission features and their evolution in time resemble those observed in the spectra of some Type IIn supernovae and supernova impostors. Most surprisingly, starting $\sim 300$ days after peak brightness, the spectra show strong molecular transitions of CN at $\gtrsim 6800$ Å. The appearance of these CN features can be explained if the ejecta are strongly Nitrogen enhanced, as it is observed in modern spectroscopic studies of the bipolar Homunculus nebula. Given the spectroscopic evolution of the light echo, velocities of the main features, and detection of strong CN, we are likely seeing ejecta that contributes directly to the Homunculus nebula.
description: accepted in ApJL
Towards the Safety of Human-in-the-Loop Robotics: Challenges and Opportunities for Safety Assurance of Robotic Co-Workers
Creators: name: Eder, Kerstin
name: Harper, Chris
name: Leonards, Ute
Publisher: name: arXiv
Year: 2014
Subjects: subject: Robotics (cs.RO)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences
subject: I.2.9

description: The success of the human-robot co-worker team in a flexible manufacturing environment where robots learn from demonstration heavily relies on the correct and safe operation of the robot. How this can be achieved is a challenge that requires addressing both technical as well as human-centric research questions. In this paper we discuss the state of the art in safety assurance, existing as well as emerging standards in this area, and the need for new approaches to safety assurance in the context of learning machines. We then focus on robotic learning from demonstration, the challenges these techniques pose to safety assurance and indicate opportunities to integrate safety considerations into algorithms "by design". Finally, from a human-centric perspective, we stipulate that, to achieve high levels of safety and ultimately trust, the robotic co-worker must meet the innate expectations of the humans it works with. It is our aim to stimulate a discussion focused on the safety aspects of human-in-the-loop robotics, and to foster multidisciplinary collaboration to address the research challenges identified.
Sussing Merger Trees: the influence of the halo finder
Creators: name: Avila, Santiago
name: Knebe, Alexander
name: Pearce, Frazer R.
name: Schneider, Aurel
name: Srisawat, Chaichalit
name: Thomas, Peter A.
name: Behroozi, Peter
name: Elahi, Pascal J.
name: Han, Jiaxin
name: Mao, Yao-Yuan
name: Onions, Julian
name: Rodriguez-Gomez, Vicente
Publisher: name: arXiv
Year: 2014
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Merger tree codes are routinely used to follow the growth and merger of dark matter haloes in simulations of cosmic structure formation. Whereas in Srisawat et. al. we compared the trees built using a wide variety of such codes here we study the influence of the underlying halo catalogue upon the resulting trees. We observe that the specifics of halo finding itself greatly influences the constructed merger trees. We find that the choices made to define the halo mass are of prime importance. For instance, amongst many potential options different finders select self-bound objects or spherical regions of defined overdensity, decide whether or not to include substructures within the mass returned and vary in their initial particle selection. The impact of these decisions is seen in tree length (the period of time a particularly halo can be traced back through the simulation), branching ratio (essentially the merger rate of \subhalos) and mass evolution. We therefore conclude that the choice of the underlying halo finder is more relevant to the process of building merger trees than the tree builder itself. We also report on some built-in features of specific merger tree codes that (sometimes) help to improve the quality of the merger trees produced.
description: Accepted in MNRAS. 15 pages, 10 figures, 1 table
Minimum in the thermal conductivity of supercooled water: a computer simulation study
Creators: name: Bresme, F.
name: Biddle, J. W.
name: Sengers, J. V.
name: Anisimov, M. A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We report the results of a computer simulation study of the thermodynamic properties and the thermal conductivity of supercooled water as a function of pressure and temperature using the TIP4P-2005 water model. The thermodynamic properties can be represented by a two-structure equation of state consistent with the presence of a liquid-liquid critical point in the supercooled region. Our simulations confirm the presence of a minimum in the thermal conductivity, not only at atmospheric pressure, as previously found for the TIP5P water model, but also at elevated pressures. This anomalous behavior of the thermal conductivity of supercooled water appears to be related to the maximum of the isothermal compressibility or the minimum of the speed of sound. However, the magnitudes of the simulated thermal conductivities are sensitive to the water model adopted and appear to be significantly larger than the experimental thermal conductivities of real water at low temperatures.
description: 6 Figures
Absorption-Line Detections of $10^{5-6}$ K Gas in Spiral-Rich Groups of Galaxies
Creators: name: Stocke, J. T.
name: Keeney, B. A.
name: Danforth, C. W.
name: Syphers, D.
name: Yamamoto, H.
name: Shull, J. M.
name: Green, J. C.
name: Froning, C.
name: Savage, B. D.
name: Wakker, B.
name: Kim, T. -S.
name: Ryan-Weber, E. V.
name: Kacprzak, G. G.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Using the Cosmic Origins Spectrograph (COS) on the Hubble Space Telescope (HST) the COS Science Team has conducted a high signal-to-noise survey of 14 bright QSOs. In a previous paper (Savage et al. 2014) these far-UV spectra were used to discover 14 "warm" ($T > 10^5$ K) absorbers using a combination of broad Lyα and O VI absorptions. A reanalysis of a few of this new class of absorbers using slightly relaxed fitting criteria finds as many as 20 warm absorbers could be present in this sample. A shallow, wide spectroscopic galaxy redshift survey has been conducted around these sight lines to investigate the warm absorber environment, which is found to be spiral-rich galaxy groups or cluster outskirts with radial velocity dispersions of σ = 250-750 km/s. While 2σ evidence is presented favoring the hypothesis that these absorptions are associated with the galaxy groups and not with the individual, nearest galaxies, this evidence has considerable systematic uncertainties and is based on a small sample size so it is not entirely conclusive. If the associations are with galaxy groups, the observed frequency of warm absorbers (dN/dz = 3.5-5 per unit redshift) requires them to be very large (~1 Mpc in radius at high covering factor). Most likely these warm absorbers are interface gas clouds whose presence implies the existence of a hotter ($T \sim 10^{6.5}$ K), diffuse and probably very massive ($>10^{11}~M_{\odot}$) intra-group medium which has yet to be detected directly.
description: Accepted for publication in ApJ
Presentations of the One Health EJP Stakeholder Conference "Collaborating to face future One Health challenges in Europe"
Creators: name: Various Authors (See Each Presentation)
Publisher: name: Zenodo
Year: 2023
Subjects: One Health
One Health EJP

description: Presentations given at the One Health EJP Conference "Collaborating to face future One Health challenges in Europe", which took place from the 19th to the 21st of June 2023 at the Museum of Natural Sciences of Brussels, Belgium
Influence of the single-particle structure on the nuclear surface and the neutron skin
Creators: name: Warda, M.
name: Centelles, M.
name: Vinas, X.
name: Roca-Maza, X.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We analyze the influence of the single-particle structure on the neutron density distribution and the neutron skin in Ca, Ni, Zr, Sn, and Pb isotopes. The nucleon density distributions are calculated in the Hartree-Fock+BCS approach with the SLy4 Skyrme force. A close correlation is found between the quantum numbers of the valence neutrons and the changes in the position and the diffuseness of the nuclear surface, which in turn affect the neutron skin thickness. Neutrons in the valence orbitals with low principal quantum number and high angular momentum mainly displace the position of the neutron surface outwards, while neutrons with high principal quantum number and low angular momentum basically increase the diffuseness of the neutron surface. The impact of the valence shell neutrons on the tail of the neutron density distribution is discussed.
description: 17 pages, 14 figures
The T7 flavor symmetry in 3-3-1 model with neutral leptons
Creators: name: Vien, V. V.
name: Long, H. N.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We construct a 3-3-1 model based on non-Abelian discrete symmetry $T_7$ responsible for the fermion masses. Neutrinos get masses from only anti-sextets which are in triplets $\underline{3}$ and $\underline{3}^*$ under $T_7$. The flavor mixing patterns and mass splitting are obtained without perturbation. The tribimaximal form obtained with the breaking $T_7 \rightarrow Z_3$ in charged lepton sector and both $T_7 \rightarrow Z_3$ and $Z_3 \rightarrow \{\mathrm{Identity}\}$ must be taken place in neutrino sector but only apart in breakings $Z_3 \rightarrow \{\mathrm{Identity}\}$ (without contribution of $\si'$), and the upper bound on neutrino mass $\sum_{i=1}^3m_i$ at the level is presented. The Dirac CP violation phase $δ$ is predicted to either $\fracπ{2}$ or $\frac{3π}{2}$ which is maximal CP violation. From the Dirac CP violation phase we obtain the relation between Euler's angles which is consistent with the experimental in PDG 2012. On the other hand, the realistic lepton mixing can be obtained if both the direction for breakings $T_7 \rightarrow Z_3$ and $Z_3 \rightarrow \{\mathrm{Identity}\}$ are taken place in neutrino sectors. The CKM matrix is the identity matrix at the tree-level.
description: 39 pages, 16 figures. arXiv admin note: substantial text overlap with arXiv:1312.5034; and text overlap with arXiv:1304.0921, arXiv:1306.4138, arXiv:1311.6729, arXiv:1310.4614 by other authors
Distributing points uniformly on the unit sphere under a mirror reflection symmetry constraint
Creators: name: Koay, Cheng Guan
Publisher: name: arXiv
Year: 2014
Subjects: subject: Classical Physics (physics.class-ph)
subject: Optimization and Control (math.OC)
subject: Computational Physics (physics.comp-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: Uniformly distributed point sets on the unit sphere with and without symmetry constraints have been found useful in many scientific and engineering applications. Here, a novel variant of the Thomson problem is proposed and formulated as an unconstrained optimization problem. While the goal of the Thomson problem is to find the minimum energy configuration of $N$ electrons constrained on the surface of the unit sphere, this novel variant imposes a new symmetry constraint---mirror reflection symmetry with the $x$-$y$ plane as the plane of symmetry. Qualitative features of the two-dimensional projection of the optimal configurations are briefly mentioned and compared to the ground-state configurations of the two dimensional system of charged particles laterally confined by a parabolic potential well.
description: 14 pages, 3 figures
On holographic entanglement entropy of non-local field theories
Creators: name: Pang, Da-Wei
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study holographic entanglement entropy of non-local field theories both at extremality and finite temperature. The gravity duals, constructed in arXiv:1208.3469 [hep-th], are characterized by a parameter $w$. Both the zero temperature backgrounds and the finite temperature counterparts are exact solutions of Einstein-Maxwell-dilaton theory. For the extremal case we consider the examples with the entangling regions being a strip and a sphere. We find that the leading order behavior of the entanglement entropy always exhibits a volume law when the size of the entangling region is sufficiently small. We also clarify the condition under which the next-to-leading order result is universal. For the finite temperature case we obtain the analytic expressions both in the high temperature limit and in the low temperature limit. In the former case the leading order result approaches the thermal entropy, while the finite contribution to the entanglement entropy at extremality can be extracted by taking the zero temperature limit in the latter case. Moreover, we observe some peculiar properties of the holographic entanglement entropy when $w=1$.
description: 24 pages, 2 figures, accepted by Phys. Rev. D
Relations of stellar mass between electron temperature-based metallicity of star-forming galaxies in a wide mass range
Creators: name: Shi, WeiBin
name: Liang, YanChun
name: Shao, Xu
name: Liu, XiaoWei
name: Zhao, Gang
name: Hammer, Francois
name: Zhang, Yong
name: Flores, Hector
name: Ruan, GuiPing
name: Zhou, Li
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We select 947 star-forming galaxies from SDSS-DR7 with [O~{\sc iii}]$λ$4363 emission lines detected at a signal-to-noise {ratio }larger than 5$σ$. Their electron temperatures and direct oxygen abundances are {then }determined. {W}e compare the results from different methods. $t_2${, the} electron temperature in {the }low ionization region{,} estimated from $t_3${, that} in {the }high ionization region{,} {is} compared {using} three analysis relations between $t_2-t_3${. These} show obvious differences, which result in some different ionic oxygen abundances. The results of $t_3$, $t_2$, {$\rm O^{++}$/$\rm H^+$} and {$\rm O^{+}$/$\rm H^+$} derived by using methods from IRAF and literature are also compared. The ionic abundances $\rm O^{++}$/$\rm H^+$ {are} higher than $\rm O^{+}$/$\rm H^+$ for most cases. The{ different} oxygen abundances derived from $T_{\rm e}$ and the strong-line ratios show {a }clear discrepancy, which is more obvious following increasing stellar mass and strong-line ratio $R_{23}$. The sample{ of} galaxies from SDSS {with} detected [O~{\sc iii}]$λ$4363 have lower metallicites and higher {star formation rates}, {so} they may not be typical representatives of the whole{ population of} galaxies. Adopting data objects from {Andrews \& Martini}, {Liang et al.} and {Lee et al.} data, we derive new relations of stellar mass and metallicity for star-forming galaxies in a much wider stellar mass range: from $10^6\,M_\odot$ to $10^{11}\,M_\odot$.
description: 16 pages, 11 figures, Accepted by Research in Astronomy and Astrophysics
More on Asymptotic behaviors of 9j Coefficients
Creators: name: Kleszyk, Brian
name: Zamick, Larry
Publisher: name: arXiv
Year: 2014
Subjects: subject: Nuclear Theory (nucl-th)
subject: Atomic and Molecular Clusters (physics.atm-clus)
subject: Atomic Physics (physics.atom-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Previouslywe noted in numerical calculations that a certain unitary ninej coefficient U9j =((jj)^{2j} (jj)^{2j} | (jj)^{2j} (jj) ^{(2j-2)})^{I} decreases with increasing j and for small I the decrease is of the form C j^{m} e^{-αj} . The exponential decay dominates. It is here shown that α= 4 ln(2) and m=3/2.
title: Einfluss von Auslegungsparametern von Windenergieanlagen auf die Ökonomie von Stromversorungssystemen
Creators: name: Weldi, Tobias
Year: 2020
Subjects: subject: 62 Ingenieurwissenschaften

description: Die energetischen und wirtschafltichen Auswirkungen verschiedener Auslegungsparameter von Windenergieanlagen auf ein Stromversorgungssystem für die Region Schwabach werden untersucht. Basierend auf der Variation der Auslegungsparameter werden Systeme mit möglichst niedrigen Stromenstehungskosten gesucht. Des Weiteren wird die stromgestehungs-kostenoptimierte Windenergieanlage unter verschiedenen wirtschaftlichen Bedingungen analysiert.