cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Movie 2: Red Lattice Delivery of Atoms with Blue Detuned TM Stark GM
Creators: name: Burgers, Alexander P.
name: Peng, Lucas S.
name: Kimble, H. Jeff
Publisher: name: CaltechDATA
Year: 2018

description: The movie shows the atomic trajectories launched from a free space, 1D optical lattice conveyor belt as they interact with surface forces and guided modes of a dielectric structure.
title: Movie 1: Red Lattice Delivery of Atoms with No Stark GMs
Creators: name: Burgers, Alexander P.
name: Peng, Lucas S.
name: Kimble, H. Jeff
Publisher: name: CaltechDATA
Year: 2018

description: The movie shows the atomic trajectories launched from a free space, 1D optical lattice conveyor belt as they interact with surface forces and guided modes of a dielectric structure.
A cross-sectional study of well water arsenic and child IQ in Maine schoolchildren
Creators: name: Wasserman, Gail A.
name: Liu, Xinhua
name: LoIacono, Nancy J.
name: Kline, Jennie K
name: Factor-Litvak, Pam
name: Van Geen, Alexander
name: Mey IV, Jacob L.
name: Levy, Diane K.
name: Abramson, Richard
name: Schwartz, Amy
name: Graziano, Joseph
Publisher: name: Columbia University
Year: 2014
Subjects: Children--Intelligence levels
Drinking water--Arsenic content
Environmental health
Child development

description: Background: In recent studies in Bangladesh and elsewhere, exposure to arsenic (As) via drinking water is negatively associated with performance-related aspects of child intelligence (e.g., Perceptual Reasoning, Working Memory) after adjustment for social factors. Because findings are not easily generalizable to the US, we examine this relation in a US population. Methods: In 272 children in grades 3–5 from three Maine school districts, we examine associations between drinking water As (WAs) and intelligence (WISC-IV). Results: On average, children had resided in their current home for 7.3 years (approximately 75% of their lives). In unadjusted analyses, household well WAs is associated with decreased scores on most WISC-IV Indices. With adjustment for maternal IQ and education, HOME environment, school district and number of siblings, WAs remains significantly negatively associated with Full Scale IQ and Perceptual Reasoning, Working Memory and Verbal Comprehension scores. Compared to those with WAs
Dual Quaternion Sample Reduction for SE(2) Estimation
Creators: name: Li, Kailai
name: Pfaff, Florian
name: Hanebeck, Uwe D.
Publisher: name: Institute of Electrical and Electronics Engineers (IEEE)
Year: 2020

description: We present a novel sample reduction scheme for random variables belonging to the SE(2) group by means of Dirac mixture approximation. For this, dual quaternions are employed to represent uncertain planar transformations. The Cramér–von Mises distance is modified as a smooth metric to measure the statistical distance between Dirac mixtures on the manifold of planar dual quaternions. Samples of reduced size are then obtained by minimizing the probability divergence via Riemannian optimization while interpreting the correlation between rotation and translation. We further deploy the proposed scheme for nonparametric modeling of estimates for nonlinear SE(2) estimation. Simulations show superior tracking performance of the sample reduction-based filter compared with Monte Carlo-based as well as parametric model-based planar dual quaternion filters.
Mining On Alzheimer's Diseases Related Knowledge Graph to Identity Potential AD-related Semantic Triples for Drug Repurposing
Creators: name: Nian, Yi
name: Hu, Xinyue
name: Zhang, Rui
name: Feng, Jingna
name: Du, Jingcheng
name: Li, Fang
name: Chen, Yong
name: Tao, Cui
Publisher: name: arXiv
Year: 2022
Subjects: subject: Artificial Intelligence (cs.AI)
subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: To date, there are no effective treatments for most neurodegenerative diseases. Knowledge graphs can provide comprehensive and semantic representation for heterogeneous data, and have been successfully leveraged in many biomedical applications including drug repurposing. Our objective is to construct a knowledge graph from literature to study relations between Alzheimer's disease (AD) and chemicals, drugs and dietary supplements in order to identify opportunities to prevent or delay neurodegenerative progression. We collected biomedical annotations and extracted their relations using SemRep via SemMedDB. We used both a BERT-based classifier and rule-based methods during data preprocessing to exclude noise while preserving most AD-related semantic triples. The 1,672,110 filtered triples were used to train with knowledge graph completion algorithms (i.e., TransE, DistMult, and ComplEx) to predict candidates that might be helpful for AD treatment or prevention. Among three knowledge graph completion models, TransE outperformed the other two (MR = 13.45, Hits@1 = 0.306). We leveraged the time-slicing technique to further evaluate the prediction results. We found supporting evidence for most highly ranked candidates predicted by our model which indicates that our approach can inform reliable new knowledge. This paper shows that our graph mining model can predict reliable new relationships between AD and other entities (i.e., dietary supplements, chemicals, and drugs). The knowledge graph constructed can facilitate data-driven knowledge discoveries and the generation of novel hypotheses.
description: BMC Bioinformatics
title: Die Probe der Freunden; [1772]
title: ein Lustspiel von dreyen Aufzügen vorgestellt von der lateinischen Grundschule zu Burghausen, als diese auf höchste Freygiebigkeit des ... Herrn Ambrosius ... Probsten, und ... Abten in dem ... Stifte Reichensperg ... mit sonderbaren Ehrenzeichen belohnet wurde am 21. und 25. Augusts 1772
titleType: Subtitle
Creators: name: Poxhorn, Judas Thaddäus
Publisher: name: Universitätsbibliothek der Ludwig-Maximilians-Universität München
Year: 2008

description: Perioche und Text des musikal. Zwischenspiels. - In Fraktur
CYBERCRIME INVESTIGATION TO FACE THE INDUSTRIAL ERA 4.0 IN CRIMINAL LAW EVIDENCE
Creators: name: HIMAWAN BAYU AJI
name: BUDI SANTOSO
name: DEDI PRASETYO
Publisher: name: Zenodo
Year: 2023
Subjects: Legal Protection, Consumers, Buying and Selling, Electronics, online transactions

description: Abstract
One of the problems faced by law enforcement to ensnare perpetrators of cyber crime is the problem of proving the guilt of the accused. This reality is a challenge for law enforcement to solve all problems that occur due to very rapid technological development. The research problem is how the process of proving cyber crime. A normative approach used to obtain secondary data through literature studies. Data analysis is carried out in a qualitative way. The results showed that in revealing a very complicated, complex, specific cyber crime case, telematics expert testimony as evidence on cyber crime in the criminal justice process is valid evidence according to law. In relation to the issues discussed regarding proving cyber crime using internet facilities, the legal provisions of evidence used still refer to the Code of Criminal Procedure (KUHAP) and Law Number 19 of 2016 concerning Amendments to Law Number 11 of 2008 concerning Electronic Information and Transactions.
The full CMB temperature bispectrum from single-field inflation
Creators: name: Huang, Zhiqi
name: Vernizzi, Filippo
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We compute the full cosmic microwave background temperature bispectrum generated by nonlinearities after single-field inflation. By integrating the photon temperature at second order along a perturbed geodesic in Newtonian gauge, we derive an expression for the observed temperature fluctuations that, for the first time, clarifies the separation of the gravitational lensing and time-delay effects from the purely second-order contributions. We then use the second-order Boltzmann code CosmoLib$2^{\rm nd}$ to calculate these contributions and their bispectrum. Including the perturbations in the photon path, the numerically computed bispectrum exactly matches the expected squeezed limit. Moreover, the analytic squeezed-limit formula reproduces well the signal-to-noise and shape of the full bispectrum, potentially facilitating the subtraction of the bias induced by second-order effects. For a cosmic-variance limited experiment with $l_{\rm max} = 2000$, the bias on a local signal is $f_{\rm NL}^{\rm loc} =0.73$ negligible for equilateral and orthogonal signals. The signal-to-noise ratio is unity at $l_{\rm max} \sim 3000$, suggesting that second-order effects may hopefully be measured in the future.
description: 4 pages, 2 figures
title: Metadata-Based Image Collecting and Databasing for Sharing and Analysis
Creators: name: Wu, Xi
Publisher: name: University of Kentucky Libraries
Year: 2019

description: Data collecting and preparing is generally considered a crucial process in data science projects. Especially for image data, adding semantic attributes when preparing image data provides much more insights for data scientists. In this project, we aim to implement a general-purpose central image data repository that allows image researchers to collect data with semantic properties as well as data query. One of our researchers has come up with the specific challenge of collecting images with weight data of infants in least developed countries with limited internet access. The rationale is to predict infant weights based on image data by applying Machine Learning techniques. To address the data collecting issue, I implemented a mobile application which features online and offline image and annotation upload and a web application which features image query functionality. This work is derived and partly decoupled from the previous project – ImageSfERe (Image Sharing for Epilepsy Research), which is a web-based platform to collect and share epilepsy patient imaging.
description: Copyright © Xi Wu 2019
Observation of giant circular dichroism induced by electronic chirality
Creators: name: Xiao, Qian
name: Janson, Oleg
name: Francoual, Sonia
name: Qiu, Qingzheng
name: Li, Qizhi
name: Zhang, Shilong
name: Xie, Wu
name: Bereciartua, Pablo
name: Brink, Jeroen van den
name: van Wezel, Jasper
name: Peng, Yingying
Publisher: name: arXiv
Year: 2023
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Chiral phases of matter, characterized by a definite handedness, abound in nature, ranging from the crystal structure of quartz to spiraling spin states in helical magnets. In $1T$-TiSe$_2$ a source of chirality has been proposed that stands apart from these classical examples as it arises from combined electronic charge and quantum orbital fluctuations. This may allow its chirality to be accessed and manipulated without imposing either structural or magnetic handedness. However, direct bulk evidence that broken inversion symmetry and chirality are intrinsic to TiSe$_2$ remains elusive. Here, employing resonant elastic scattering of x-rays, we reveal the presence of giant circular dichroism up to $\sim$ 40$\%$ at forbidden Bragg peaks that emerge at the charge and orbital ordering transition. The dichroism varies dramatically with incident energy and azimuthal angle. Comparison to calculated scattering intensities unambiguously traces its origin to bulk chiral electronic order in ${\mathrm{TiSe}}_2$ and establishes resonant elastic x-ray scattering as a sensitive probe to electronic chirality.
description: 6 pages, 4 figures
Quadrupole collectivity in neutron-deficient Sn nuclei: \nuc{104}{Sn} and the role of proton excitations
Creators: name: Bader, V. M.
name: Gade, A.
name: Weisshaar, D.
name: Brown, B. A.
name: Baugher, T.
name: Bazin, D.
name: Berryman, J. S.
name: Ekstrom, A.
name: Hjorth-Jensen, M.
name: Stroberg, S. R.
name: Walters, W. B.
name: Wimmer, K.
name: Winkler, R.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We report on the experimental study of quadrupole collectivity in the neutron-deficient nucleus \nuc{104}{Sn} using intermediate-energy Coulomb excitation. The $B(E2; 0^+_1 \rightarrow 2^+_1)$ value for the excitation of the first $2^+$ state in \nuc{104}{Sn} has been measured to be $0.180(37)~e^2$b$^2$ relative to the well-known $B(E2)$ value of \nuc{102}{Cd}. This result disagrees by more than one sigma with a recently published measurement \cite{Gua13}. Our result indicates that the most modern many-body calculations remain unable to describe the enhanced collectivity below mid-shell in Sn approaching $N=Z=50$. We attribute the enhanced collectivity to proton particle-hole configurations beyond the necessarily limited shell-model spaces and suggest the asymmetry of the $B(E2)$-value trend around mid-shell to originate from enhanced proton excitations across $Z=50$ as $N=Z$ is approached.
description: Accepted for publication as rapid communication in Physical Review C
A frustrated spin-1/2 Heisenberg antiferromagnet on a chevron-square lattice
Creators: name: Li, P. H. Y.
name: Bishop, R. F.
name: Campbell, C. E.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The coupled cluster method (CCM) is used to study the zero-temperature properties of a frustrated spin-half ($s={1}{2}$) $J_{1}$--$J_{2}$ Heisenberg antiferromagnet (HAF) on a 2D chevron-square lattice. Each site on an underlying square lattice has 4 nearest-neighbor exchange bonds of strength $J_{1}>0$ and 2 next-nearest-neighbor (diagonal) bonds of strength $J_{2} \equiv x J_{1}>0$, with each square plaquette having only one diagonal bond. The diagonal bonds form a chevron pattern, and the model thus interpolates smoothly between 2D HAFs on the square ($x=0$) and triangular ($x=1$) lattices, and also extrapolates to disconnected 1D HAF chains ($x \to \infty$). The classical ($s \to \infty$) version of the model has Néel order for $0 < x < x_{\rm cl}$ and a form of spiral order for $x_{\rm cl} < x < \infty$, where $x_{\rm cl} = {1}{2}$. For the $s={1}{2}$ model we use both these classical states, as well as other collinear states not realized as classical ground-state (GS) phases, as CCM reference states, on top of which the multispin-flip configurations resulting from quantum fluctuations are incorporated in a systematic truncation scheme, which we carry out to high orders and extrapolate to the physical limit. We calculate the GS energy, GS magnetic order parameter, and the susceptibilities of the states to various forms of valence-bond crystalline (VBC) order, including plaquette and two different dimer forms. We find that the $s={1}{2}$ model has two quantum critical points, at $x_{c_{1}} \approx 0.72(1)$ and $x_{c_{2}} \approx 1.5(1)$, with Néel order for $0 < x < x_{c_{1}}$, a form of spiral order for $x_{c_{1}} < x < x_{c_{2}}$ that includes the correct three-sublattice $120^{\circ}$ spin ordering for the triangular-lattice HAF at $x=1$, and parallel-dimer VBC order for $x_{c_{2}} < x < \infty$.
Possible Existence of Charmonium-Nucleus Bound States
Creators: name: Yokota, Akira
name: Hiyama, Emiko
name: Oka, Makoto
Publisher: name: arXiv
Year: 2013
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Possible existence of $(c\bar{c})-$nucleus bound states are examined. We adopt Gaussian potentials for the $η_{c}-N$ and $J/ψ-N$ interactions. The relations between the scattering lengths $a$ of $(c\bar{c})-N$ interactions and the binding energies of $η_{c}-NN$, $J/ψ-NN$ and $J/ψ-^{4}$He are given. The results show that scattering lengths $a \le -0.95$ fm are needed to make $η_{c}-NN$ and $J/ψ-NN$ bound states, while for $a \le -0.24$ fm there may exist a $J/ψ-^{4}$He bound state.
description: 18 pages, 14 figures. Submitted to PTEP
A Data-driven Multi-fidelity Physics-informed Learning Framework for Smart Manufacturing: A Composites Processing Case Study
Creators: name: Ramezankhani, Milad
name: Nazemi, Amir
name: Narayan, Apurva
name: Voggenreiter, Heinz
name: Harandi, Mehrtash
name: Seethaler, Rudolf
name: Milani, Abbas S.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computational Engineering, Finance, and Science (cs.CE)
subject: FOS: Computer and information sciences

description: Despite the successful implementations of physics-informed neural networks in different scientific domains, it has been shown that for complex nonlinear systems, achieving an accurate model requires extensive hyperparameter tuning, network architecture design, and costly and exhaustive training processes. To avoid such obstacles and make the training of physics-informed models less precarious, in this paper, a data-driven multi-fidelity physics-informed framework is proposed based on transfer learning principles. The framework incorporates the knowledge from low-fidelity auxiliary systems and limited labeled data from target actual system to significantly improve the performance of conventional physics-informed models. While minimizing the efforts of designing a complex task-specific network for the problem at hand, the proposed settings guide the physics-informed model towards a fast and efficient convergence to a global optimum. An adaptive weighting method is utilized to further enhance the optimization of the model composite loss function during the training process. A data-driven strategy is also introduced for maintaining high performance in subdomains with significant divergence between low- and high-fidelity behaviours. The heat transfer of composite materials undergoing a cure cycle is investigated as a case study to demonstrate the proposed framework's performance compared to conventional physics-informed models.
title: Manasses Rex Juda; [1772]
title: ein Trauerspiel auf öffentlicher Schaubühne vorgestellet von dem churfürstlichen Lyceum und Gymnasium der Gesellschaft Jesu zu Burghausen den 2 und 4 Herbstmonats 1772
titleType: Subtitle
Creators: name: (:Unav)
Publisher: name: Universitätsbibliothek der Ludwig-Maximilians-Universität München
Year: 2008

description: Perioche. - In Fraktur
Fragebogen zur Messung arbeitsbezogener Selbstsorge (SESO) – Gesundheitsförderliche Routinen für die beschleunigte, ergebnisorientierte Arbeitswelt
Creators: name: Mustafić, Maida
name: Krause, Andreas
name: Dorsemagen, Cosima
name: Baeriswyl-Zurbriggen, Sophie
name: Knecht, Michaela
Publisher: name: Innsbruck University Press
Year: 2023
Subjects: subject: 150 - Psychologie

description: Arbeitsbezogene Selbstsorge ist ein selbstinitiiertes, gesundheits- und leistungsförderliches Verhalten, dass dem Bewältigen hoher Arbeitsanforderungen unter Berücksichtigung der eigenen Gesundheit und Leistungsfähigkeit dient. In drei Studien wurde ein Fragebogen zur Messung arbeitsbezogener Selbstsorge entwickelt, indem zunächst die Struktur faktoranalytisch geprüft und anschließend die Konstrukt- und Kriteriumsvalidität bestätigt wurde. Acht Facetten arbeitsbezogener Selbstsorge wurden ermittelt, die jeweils einem arbeitsgestaltenden und einem erholungsfördernden Faktor zweiter Ordnung zugeordnet werden konnten. Erwartungsgemäß zeigten sich Zusammenhänge zwischen Selbstsorge und Job Crafting, dem Erholungsverhalten und dem Umgang mit der eigenen Gesundheit. Weiterhin konnten überwiegend erwartungskonforme Zusammenhänge zu gesundheits- (Erschöpfung und psychosomatische Beschwerden und arbeitsbezogenen Variablen (Arbeitsengagement, Mehrarbeit) gezeigt werden. Das Konstrukt wird bezogen auf eine Erweiterung für einen kollektiven Einsatz in Teams und Organisationen diskutiert.
Large Andreev bound state zero bias peaks in a weakly dissipative environment
Creators: name: Wang, Zhichuan
name: Zhang, Shan
name: Pan, Dong
name: Zhang, Gu
name: Xia, Zezhou
name: Li, Zonglin
name: Liu, Donghao
name: Cao, Zhan
name: Liu, Lei
name: Wen, Lianjun
name: Liao, Dunyuan
name: Zhuo, Ran
name: Li, Yongqing
name: Liu, Dong E.
name: Shang, Runan
name: Zhao, Jianhua
name: Zhang, Hao
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study Andreev bound states in hybrid InAs-Al nanowire devices. The energy of these states can be tuned to zero by gate voltage or magnetic field, revealing large zero bias peaks (ZBPs) near 2e^2/h in tunneling conductance. Probing these large ZBPs using a weakly dissipative lead reveals non-Fermi liquid temperature (T) dependence due to environmental Coulomb blockade (ECB), an interaction effect from the lead acting on the nanowire junction. By increasing T, these large ZBPs either show a height increase or a transition from split peaks to a ZBP, both deviate significantly from non-dissipative devices where a Fermi-liquid T dependence is revealed. Our result demonstrates the competing effect between ECB and thermal broadening on Andreev bound states.
description: Raw data and processing codes are available at https://doi.org/10.5281/zenodo.6123849
Complex zero strip decreasing operators
Creators: name: Cardon, David A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Complex Variables (math.CV)
subject: FOS: Mathematics
subject: Primary 30C15, Secondary 47B38

description: In this paper we study the effect of linear differential operators coming from the Laguerre-Polya class that act on functions in the extended Laguerre-Polya class with zeros in a horizontal strip in the complex plane. These operator decrease the size of the strip containing the zeros.
description: 17 pages, corrected several typos, added a citation. appears in Math. Anal. Appl. (2015)
Identification of the short-lived Santa Rosa geomagnetic excursion in lavas on Floreana Island (Galapagos) by ⁴⁰Ar/³⁹Ar geochronology
Creators: name: Balbas, Andrea
name: Koppers, Anthony A. P.
name: Kent, Dennis V.
name: Konrad, Kevin
name: Clark, Peter U.
Publisher: name: Columbia University
Year: 2016
Subjects: subject: Geomagnetism
subject: Geological time
subject: Lava flows
subject: Paleomagnetism
subject: Geophysics
subject: FOS: Earth and related environmental sciences

description: A set of closely related basaltic lava flows (supersite GA-X) on Floreana Island in the Galapagos Archipelago has a published record of an excursional or transitional direction (virtual geomagnetic pole located at 153.1°E, 54.2°S with α₉₅ = 5.0°) and a geomagnetic field strength (1.1 × 10²² Am²) that is only ∼14% of the strength of the modern magnetic field (7.8 × 10²² Am²). The very large age uncertainty of previous dating of a lava flow (G43) from this set, however, has prevented placing this event in the geomagnetic polarity time scale. Here we report highly reproducible and precise ⁴⁰Ar/³⁹Ar ages on the lava flow that indicate that the distinct geomagnetic excursion is 925.7 ± 4.6 ka (2σ; n = 6; mean square of weighted deviates = 1.23). This shows that this dramatic weakening of the geomagnetic field is associated with the Santa Rosa Excursion instead of the Matuyama-Brunhes polarity reversal. Our high-precision ⁴⁰Ar/³⁹Ar ages for Floreana provide evidence for the global significance of the Santa Rosa Excursion.
A hadronic scenario for HESS J1818-154
Creators: name: Castelletti, G.
name: Supan, L.
name: Dubner, G.
name: Joshi, B. C.
name: Surnis, M. P.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Aims: G15.4+0.1 is a faint supernova remnant (SNR) that has recently been associated with the gamma-ray source HESS J1818-154. We investigate a hadronic scenario for the production of the gamma-ray emission. Methods: Molecular 13CO (J=1-0) taken from the Galactic Ring Survey (GRS) and neutral hydrogen (HI) data from the Southern Galactic Plane Survey (SGPS) have been used in combination with new 1420 MHz radio continuum observations carried out with the Giant Metrewave Radio Telescope (GMRT). Results: From the new observations and analysis of archival data we provided for the first time a reliable estimate for the distance to the SNR G15.4+0.1 and discovered molecular clouds located at the same distance. On the basis of HI absorption features, we estimate the distance to G15.4+0.1 in 4.8+/-1.0 kpc. The 13CO observations clearly show a molecular cloud about 5 arcmin in size with two bright clumps, labeled A and B, clump A positionally associated with the location of HESS J1818-154 and clump B in coincidence with the brightest northern border of the radio SNR shell. The HI absorption and the 13CO emission study indicates a possible interaction between the molecular material and the remnant. We estimate the masses and densities of the molecular gas as (1.2+/-0.5)X10^3 M_sun and (1.5+/-0.4)X10^3 cm^-3 for clump A and (3.0+/-0.7)X10^3 M_sun and (1.1+/-0.3)X10^3 cm^-3 for clump B. Calculations show that the average density of the molecular clump A is sufficient to produce the detected gamma-ray flux, thus favoring a hadronic origin for the high-energy emission.
description: Accepted to be published in Astronomy and Astrophysics Letters
Relativistic effects cannot explain galactic dynamics
Creators: name: Costa, L. Filipe O.
name: Natário, José
Publisher: name: arXiv
Year: 2023
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: It has been suggested in recent literature that nonlinear and/or gravitomagnetic general relativistic effects can play a leading role in galactic dynamics, partially or totally replacing dark matter. Using the 1+3 "quasi-Maxwell" formalism, we show, on general grounds, such hypothesis to be impossible.
description: 14 pages, 8 figures. Improved version with new Figs 4 and 8 (lensing images obtained with the GYOTO ray-tracing code), updated Fig. 3, a sharper version of the main proof, improved structure, improved and extended explanations, references added. Matches the final published version
Measurement of Vacuum Pressure with a Magneto-Optical Trap: a Pressure-Rise Method
Creators: name: Moore, Rowan W. G.
name: Lee, Lucie A.
name: Findlay, Elizabeth A.
name: Torralbo-Campo, Lara
name: Bruce, Graham D.
name: Cassettari, Donatella
Publisher: name: arXiv
Year: 2014
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: The lifetime of an atom trap is often limited by the presence of residual background gases in the vacuum chamber. This leads to the lifetime being inversely proportional to the pressure. Here we use this dependence to estimate the pressure and to obtain pressure rate-of-rise curves, which are commonly used in vacuum science to evaluate the performance of a system. We observe different rates of pressure increase in response to different levels of outgassing in our system. Therefore we suggest that this is a sensitive method which will be useful in applications of cold atom systems, in particular where the inclusion of a standard vacuum gauge is impractical.
description: 5 pages, 6 figures
Genome characterization of Long Island tick rhabdovirus, a new virus identified in Amblyomma americanum ticks
Creators: name: Tokarz, Rafal
name: Sameroff, Stephen Christopher
name: Leon, Maria
name: Jain, Komal
name: Lipkin, W. Ian
Publisher: name: Columbia University
Year: 2014
Subjects: Rhabdoviruses
Genomics
Ticks
Virology

description: Background: Ticks are implicated as hosts to a wide range of animal and human pathogens. The full range of microbes harbored by ticks has not yet been fully explored. Methods: As part of a viral surveillance and discovery project in arthropods, we used unbiased high-throughput sequencing to examine viromes of ticks collected on Long Island, New York in 2013. Results: We detected and sequenced the complete genome of a novel rhabdovirus originating from a pool of Amblyomma americanum ticks. This virus, which we provisionally name Long Island tick rhabdovirus, is distantly related to Moussa virus from Africa. Conclusions: The Long Island tick rhabdovirus may represent a novel species within family Rhabdoviridae.
Mapping of higher education communication  programmes where accessibility training can be included
Creators: name: Šumak, Boštjan
name: Pušnik, Maja
name: Kous, Katja
name: Switters, Jon
name: Kline, Darja Ivanuša
name: Sparviero, Sergio
name: Schöndorfer, Simone
name: Zabrodskaja, Anastassia
Publisher: name: Funka
Year: 2022

description: The main objective of Project Result 2 (PR2) was to carry out the mapping of university programmes in fields related to communication where accessibility training can be implemented. The results of the performed activities provide an overview of the different subjects and specific modules covered in this domain, focusing on the university partners in the consortium and a sample of other European universities. The analysis carried out here has identified differences in the structure of courses, ranging from courses whose primary focus is communication, right through those which are elective courses or part of a broader study programme. It also highlights geographic differences in the definition of curricula related to communication between different EU countries.
Independent domination of graphs with bounded maximum degree
Creators: name: Cho, Eun-Kyung
name: Kim, Jinha
name: Kim, Minki
name: Oum, Sang-il
Publisher: name: arXiv
Year: 2022
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: An independent dominating set of a graph, also known as a maximal independent set, is a set $S$ of pairwise non-adjacent vertices such that every vertex not in $S$ is adjacent to some vertex in $S$. We prove that for $Δ=4$ or $Δ\ge 6$, every connected $n$-vertex graph of maximum degree at most $Δ$ has an independent dominating set of size at most $(1-\fracΔ{\lfloorΔ^2/4\rfloor+Δ})(n-1)+1$. In addition, we characterize all connected graphs having the equality and we show that other connected graphs have an independent dominating set of size at most $(1-\fracΔ{ \lfloorΔ^2/4\rfloor+Δ})n$.
description: 14 pages
CME Expansion as the Driver of Metric Type II Shock Emission as Revealed by Self-Consistent Analysis of High Cadence EUV Images and Radio Spectrograms
Creators: name: Kouloumvakos, A.
name: Patsourakos, S.
name: Hillaris, A.
name: Vourlidas, A.
name: Preka-Papadema, P.
name: Moussas, X.
name: Caroubalos, C.
name: Tsitsipis, P.
name: Kontogeorgos, A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: On 13 June 2010, an eruptive event occurred near the solar limb. It included a small filament eruption and the onset of a relatively narrow coronal mass ejection (CME) surrounded by an extreme ultraviolet wave front recorded by the Solar Dynamics Observatory's (SDO) Atmospheric Imaging Assembly (AIA) at high cadence. The ejection was accompanied by a GOES M1.0 soft X-ray flare and a Type-II radio burst; high-resolution dynamic spectra of the latter were obtained by the ARTEMIS IV radio spectrograph. The combined observations enabled a study of the evolution of the ejecta and the EUV wavefront and its relationship with the coronal shock manifesting itself as metric Type-II burst. By introducing a novel technique, which deduces a proxy of the EUV compression ratio from AIA imaging data and compares it with the compression ratio deduced from the band-split of the Type-II metric radio burst, we are able to infer the potential source locations of the radio emission of the shock on that AIA images. Our results indicate that the expansion of the CME ejecta is the source for both EUV and radio shock emissions. Early in the CME expansion phase, the Type-II burst seems to originate in the sheath region between the EUV bubble and the EUV shock front in both radial and lateral directions. This suggests that both the nose and the flanks of the expanding bubble could have driven the shock.
description: Accepted for publication in Solar Physics, 20 pages, 8 Postscript figures. Corrections: LaTex hyperref & linksfromyear added. Typos and References corrections
Direct probing of strong magnon-photon coupling in a planar geometry
Creators: name: Kaffash, Mojtaba Taghipour
name: Wagle, Dinesh
name: Rai, Anish
name: Meyer, Thomas
name: Xiao, John Q.
name: Jungfleisch, M. Benjamin
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: We demonstrate direct probing of strong magnon-photon coupling using Brillouin light scattering spectroscopy in a planar geometry. The magnonic hybrid system comprises a split-ring resonator loaded with epitaxial yttrium iron garnet thin films of 200 nm and 2.46 $μ$m thickness. The Brillouin light scattering measurements are combined with microwave spectroscopy measurements where both biasing magnetic field and microwave excitation frequency are varied. The cooperativity for the 200 nm-thick YIG films is 4.5, and larger cooperativity of 137.4 is found for the 2.46 $μ$m-thick YIG film. We show that Brillouin light scattering is advantageous for probing the magnonic character of magnon-photon polaritons, while microwave absorption is more sensitive to the photonic character of the hybrid excitation. A miniaturized, planar device design is imperative for the potential integration of magnonic hybrid systems in future coherent information technologies, and our results are a first stepping stone in this regard. Furthermore, successfully detecting the magnonic hybrid excitation by Brillouin light scattering is an essential step for the up-conversion of quantum signals from the optical to the microwave regime in hybrid quantum systems.
Optimizing carbon dioxide trapping for geological storage
Creators: name: Azpiroz, Jaione Tirapu
name: Giro, Ronaldo
name: Ferreira, Rodrigo Neumann Barros
name: da Silva, Marcio Nogueira Pereira
name: Rodriguez, Manuela Fernandes Blanco
name: Lopez, Adolfo E. Correa
name: Vasquez, David A. Lazo
name: Ferreira, Matheus Esteves
name: Del Grande, Mariana
name: Da Silva, Ademir Ferreira
name: Steiner, Mathias B.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Applied Physics (physics.app-ph)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: Carbon dioxide (CO2) trapping in capillary networks of reservoir rocks is a pathway to long-term geological storage. At pore scale, the CO2 trapping potential depends on injection pressure, temperature, and the rock's interaction with the surrounding fluids. Modeling this interaction requires adequate representations of both capillary volume and surface. For the lack of scalable representations, however, the prediction of a rock's CO2 storage potential has been challenging. Here, we report how to represent a rock's pore space by statistically sampled capillary networks (ssCN) that preserve morphological rock characteristics. We have used the ssCN method to simulate CO2 drainage within a representative sandstone sample at reservoir pressures and temperatures, exploring intermediate- and CO2-wet conditions. This wetting regime is often neglected, despite evidence of plausibility. By raising pressure and temperature we observe increasing CO2 penetration within the capillary network. For contact angles approaching 90 degrees, the CO2 saturation exhibits a pronounced maximum reaching 80 percent of the accessible pore volume. This is about twice as high as the saturation values reported previously. For enabling validation of our results and a broader application of our methodology, we have made available the rock tomography data, the digital rock computational workflows, and the ssCN models used in this study.
description: Main article: 16 pages and 3 figures. Supplementary Information: 17 pages, 3 equations, 13 figures and 3 tables. Includes DOI for accompanying digital rock data, URL of github repository for flow simulator code, and of accompanying digital rock processing python code and automation of the scientific workflows
Quantifying cooperation: Collaborative digital reference service in the large academic library
Creators: name: De Groote, Sandra
name: Dorsch, JL
name: Collard, S
name: Scherrer, C
Publisher: name: University of Illinois at Chicago
Year: 2021
Subjects: subject: Library and Information Studies
subject: FOS: Media and communications

description: The purpose of this study was to determine how successfully a large academic library with multiple reference departments and subject specialties could combine virtually to create one digital reference service. Questions were coded to determine who the users of the service were, the types of questions being asked, and the subject expertise of the librarian answering the question. The study found that the majority of questions were submitted by persons affiliated with the university, that ready reference and directional questions predominated, and that the librarians were able to successfully share the duty of answering the general reference questions while ensuring that the questions requiring subject expertise were answered by the appropriate subject specialists. Analysis of the types of questions will inform future decisions regarding webpage redesign, online instruction needs, and more appropriate FAQs (frequently asked questions.).
Geometrical theory of diffracted rays, orbiting and complex rays
Creators: name: De Micheli, Enrico
name: Viano, Giovanni Alberto
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mathematical Physics (math-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences
subject: 78A05, 78A45, 53D50

description: In this article, the ray tracing method is studied beyond the classical geometrical theory. The trajectories are here regarded as geodesics in a Riemannian manifold, whose metric and topological properties are those induced by the refractive index (or, equivalently, by the potential). First, we derive the geometrical quantization rule, which is relevant to describe the orbiting bound-states observed in molecular physics. Next, we derive properties of the diffracted rays, regarded here as geodesics in a Riemannian manifold with boundary. A particular attention is devoted to the following problems: (i) modification of the classical stationary phase method suited to a neighborhood of a caustic; (ii) derivation of the connection formulae which enable one to obtain the uniformization of the classical eikonal approximation by patching up geodesic segments crossing the axial caustic; (iii) extension of the eikonal equation to mixed hyperbolic-elliptic systems, and generation of complex-valued rays in the shadow of the caustic. By these methods, we can study the creeping waves in diffractive scattering, describe the orbiting resonances present in molecular scattering beside the orbiting bound-states, and, finally, describe the generation of the evanescent waves, which are relevant in the nuclear rainbow.
description: 30 pages, 2 figures
The Metabolism and Growth of Web Forums
Creators: name: Wu, Lingfei
name: Zhang, Jiang
name: Zhao, Min
Publisher: name: arXiv
Year: 2013
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Computers and Society (cs.CY)
subject: Social and Information Networks (cs.SI)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: We view web forums as virtual living organisms feeding on user's attention and investigate how these organisms grow at the expense of collective attention. We find that the "body mass" ($PV$) and "energy consumption" ($UV$) of the studied forums exhibits the allometric growth property, i.e., $PV_t \sim UV_t ^ θ$. This implies that within a forum, the network transporting attention flow between threads has a structure invariant of time, despite of the continuously changing of the nodes (threads) and edges (clickstreams). The observed time-invariant topology allows us to explain the dynamics of networks by the behavior of threads. In particular, we describe the clickstream dissipation on threads using the function $D_i \sim T_i ^ γ$, in which $T_i$ is the clickstreams to node $i$ and $D_i$ is the clickstream dissipated from $i$. It turns out that $γ$, an indicator for dissipation efficiency, is negatively correlated with $θ$ and $1/γ$ sets the lower boundary for $θ$. Our findings have practical consequences. For example, $θ$ can be used as a measure of the "stickiness" of forums, because it quantifies the stable ability of forums to convert $UV$ into $PV$, i.e., to remain users "lock-in" the forum. Meanwhile, the correlation between $γ$ and $θ$ provides a convenient method to evaluate the `stickiness" of forums. Finally, we discuss an optimized "body mass" of forums at around $10^5$ that minimizes $γ$ and maximizes $θ$.
description: 6 figures
Age of Mammuthus trogontherii from Kostolac, Serbia, and the entry of megaherbivores into Europe during the Late Matuyama climate revolution
Creators: name: Muttoni, Giovanni
name: Scardia, Giancarlo
name: Dimitrijević, Vesna
name: Kent, Dennis V.
name: Monesi, Edoardo
name: Mrdjić, Nemanja
name: Korać, Miomir
Publisher: name: Columbia University
Year: 2015
Subjects: subject: Paleomagnetism
subject: Pleistocene Geologic Epoch
subject: Mammoths
subject: Geophysics
subject: FOS: Earth and related environmental sciences

description: At the Drmno open-pit coal mine near Kostolac in Serbia, a nearly complete skeleton of Mammuthus trogontherii (nicknamed Vika) was discovered in a fluvial deposit overlain by a loess–paleosol sequence where a second paleontological level named Nosak with remains of M. trogontherii was found. We studied the magnetostratigraphy of the Kostolac sedimentary sequence and found that the Vika layer dates to ~ 0.8 Ma, shortly before the Brunhes–Matuyama boundary. In addition, according to our age model and previously reported optically stimulated luminescence and electron spin resonance dates, the Nosak fossils have an estimated age of 0.19 Ma and lived during the earliest part of Marine Isotope Stage 6. It appears therefore that at Kostolac, M. trogontherii is preserved both at its earliest occurrence at ~ 0.8 Ma and close to its latest occurrence at 0.19 Ma, and may well have been present in between, albeit not yet found. We speculate that megaherbivores such as M. trogontherii entered Europe along a conjunct Danube–Po River migration conduit connecting western Asia-Levant with central-southern Europe where vast and exploitable ecosystems, particularly suited for steppe- or savanna-adapted megaherbivores from Asia and Africa, developed during the late early Pleistocene climate revolution at around 0.8 Ma.
Photo-ionization Initiated Differential Ultrafast Charge Migration: Impact of Molecular Symmetries and Tautomeric Forms
Creators: name: Chordiya, K.
name: Despré, V.
name: Nagyillés, B.
name: Zeller, F.
name: Diveki, Z.
name: Kuleff, A. I.
name: Kahaly, M. U.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Photo-ionization induced ultrafast electron dynamics is considered as a precursor to the slower nuclear dynamics associated with molecular dissociation. Here, using ab initio multielectron wave-packet propagation method, we study the overall many-electron dynamics, triggered by the ionization of outer-valence orbitals of different tautomers of a prototype molecule with more than one symmetry element. From the time evolution of the initially created averaged hole density of each system, we identify distinctly different charge dynamics response in the tautomers. We observe that keto form shows charge migration direction away from the nitrogen bonded with tautomeric hydrogen, while in enol - away from oxygen bonded to tautomeric hydrogen. Additionally, the dynamics following ionization of molecular orbitals of different symmetry reveal that a' orbitals show fast and highly delocalized charge in comparison to a" symmetry. These observations indicate why different tautomers respond differently to an XUV ionization, and might explain the subsequent different fragmentation pathways. An experimental schematics allowing detection and reconstruction of such charge dynamics is also proposed. Although the present study uses a simple, prototypical bio-relevant molecule, it reveals the explicit role of molecular symmetry and tautomerism in the ionization-triggered charge migration that controls many ultrafast physical, chemical, and biological processes, making tautomeric forms a promising tool of molecular design for desired charge migration.
Practical Recommendations for Replay-based Continual Learning Methods
Creators: name: Merlin, Gabriele
name: Lomonaco, Vincenzo
name: Cossu, Andrea
name: Carta, Antonio
name: Bacciu, Davide
Publisher: name: arXiv
Year: 2022
Subjects: subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Continual Learning requires the model to learn from a stream of dynamic, non-stationary data without forgetting previous knowledge. Several approaches have been developed in the literature to tackle the Continual Learning challenge. Among them, Replay approaches have empirically proved to be the most effective ones. Replay operates by saving some samples in memory which are then used to rehearse knowledge during training in subsequent tasks. However, an extensive comparison and deeper understanding of different replay implementation subtleties is still missing in the literature. The aim of this work is to compare and analyze existing replay-based strategies and provide practical recommendations on developing efficient, effective and generally applicable replay-based strategies. In particular, we investigate the role of the memory size value, different weighting policies and discuss about the impact of data augmentation, which allows reaching better performance with lower memory sizes.
Energy-Efficient Optimization for Wireless Information and Power Transfer in Large-Scale MIMO Systems Employing Energy Beamforming
Creators: name: Chen, Xiaoming
name: Wang, Xiumin
name: Chen, Xianfu
Publisher: name: arXiv
Year: 2013
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: In this letter, we consider a large-scale multiple-input multiple-output (MIMO) system where the receiver should harvest energy from the transmitter by wireless power transfer to support its wireless information transmission. The energy beamforming in the large-scale MIMO system is utilized to address the challenging problem of long-distance wireless power transfer. Furthermore, considering the limitation of the power in such a system, this letter focuses on the maximization of the energy efficiency of information transmission (bit per Joule) while satisfying the quality-of-service (QoS) requirement, i.e. delay constraint, by jointly optimizing transfer duration and transmit power. By solving the optimization problem, we derive an energy-efficient resource allocation scheme. Numerical results validate the effectiveness of the proposed scheme.
description: 4 pages, 3 figures. IEEE Wireless Communications Letters 2013