cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Effect of delithiation on the dimer transition of the honeycomb-lattice ruthenate Li$_{2-x}$RuO$_3$
Creators: name: Jimenez-Segura, Marco-Polo
name: Ikeda, Atsutoshi
name: Kimber, Simon A. J.
name: Giacobbe, Carlotta
name: Yonezawa, Shingo
name: Maeno, Yoshiteru
Publisher: name: arXiv
Year: 2016
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The honeycomb-lattice ruthenate Li$_2$RuO$_3$ is made heavily Li-deficient by chemical oxidation by iodine. The delithiation triggers a different phase Li$_{2-x}$RuO$_3$, the "D-phase", with superlattice. For the first time we disclose the magnetic and structural properties of the D-phase in the dimer-solid state. The low temperature magnetic susceptibility and the bond lengths indicate a bonding configuration consisting of both Ru$^{4+}$-Ru$^{4+}$ and Ru$^{5+}$-Ru$^{5+}$ dimers.
description: Li2RuO3, Li2-xRuO3, honeycomb lattice, dimers
Lattice Green Functions: the d-dimensional face-centred cubic lattice, d=8, 9, 10, 11, 12
Creators: name: Hassani, S.
name: Koutschan, C.
name: Maillard, J-M.
name: Zenine, N.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mathematical Physics (math-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences
subject: 34M55, 47E05, 81Qxx, 32G34, 34Lxx, 34Mxx, 14Kxx

description: We previously reported on a recursive method to generate the expansion of the lattice Green function of the $d$-dimensional face-centred cubic lattice (fcc). The method was used to generate many coefficients for d=7 and the corresponding linear differential equation has been obtained. In this paper, we show the strength and the limit of the method by producing the series and the corresponding linear differential equations for d=8, 9, 10, 11, 12. The differential Galois groups of these linear differential equations are shown to be symplectic for d=8, 10, 12 and orthogonal for d= 9, 11. The recursion relation naturally provides a 2-dimensional array $ T_d(n,j)$ where only the coefficients $ t_d(n,0)$ correspond to the coefficients of the lattice Green function of the d-dimensional fcc. The coefficients $ t_d(n,j)$ are associated to D-finite bivariate series annihilated by linear partial differential equations that we analyze.
description: 28 pages
N-Aroylbenzimidazoles as efficient new reagents for a greener esterification reaction under solvent-free conditions
Creators: name: Baramee Phungpis
Publisher: name: Rangsit University
Year: 2022
Subjects: N-aroylbenzimidazoles
aroylation reagent
esterification
grinding

description: Journal of Current Science and Technology, 12, 2, 211-223
Truncated Wigner function theory of coherent Ising machines based on degenerate optical parametric oscillator network
Creators: name: Maruo, Daiki
name: Utsunomiya, Shoko
name: Yamamoto, Yoshihisa
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present the quantum theory of coherent Ising machines based on networks of degenerate optical parametric oscillators (DOPOs). In a simple model consisting of two coupled DOPOs, both positive-$P$ representation and truncated Wigner representation predict quantum correlation and inseparability between the two DOPOs in spite of the open-dissipative nature of the system. Here, we apply the truncated Wigner representation method to coherent Ising machines with thermal, vacuum, and squeezed reservoir fields. We find that the probability of finding the ground state of a one-dimensional Ising model increases substantially as a result of reducing excess thermal noise and squeezing the incident vacuum fluctuation on the out-coupling port.
description: 30 pages, 14 figures
Catalytic dehydrogenative Si-N coupling of pyrroles, indoles, carbazoles as well as anilines with hydrosilanes without added base
Creators: name: Königs, C. David F.
name: Müller, Maria F.
name: Aiguabella, Nuria
name: Klare, Hendrik F. T.
name: Oestreich, Martin
Publisher: name: Technische Universität Berlin
Year: 2013
Subjects: subject: 540 Chemie und zugeordnete Wissenschaften

description: Dieser Beitrag ist mit Zustimmung des Rechteinhabers aufgrund einer (DFG geförderten) Allianz- bzw. Nationallizenz frei zugänglich.
description: This publication is with permission of the rights owner freely accessible due to an Alliance licence and a national licence (funded by the DFG, German Research Foundation) respectively.
description: A base-free, catalytic protocol for the dehydrogenative Si–N coupling of weakly nucleophilic N–H groups of heteroarenes or aryl-substituted amines with equimolar amounts of hydrosilanes is reported. Cooperative Si–H bond activation at a Ru–S bond generates a silicon electrophile that forms a Si–N bond prior to the N–H deprotonation by an intermediate Ru–H complex, only releasing H2.
External observer reflections on QBism
Creators: name: Khrennikov, Andrei
Publisher: name: arXiv
Year: 2015
Subjects: subject: Quantum Physics (quant-ph)
subject: History and Philosophy of Physics (physics.hist-ph)
subject: FOS: Physical sciences

description: In this short review I present my personal reflections on QBism. I have no intrinsic sympathy neither to QBism nor to subjective interpretation of probability in general. However, I have been following development of QBism from its very beginning, observing its evolution and success, sometimes with big surprise. Therefore my reflections on QBism can be treated as "external observer" reflections. I hope that my view on this interpretation of quantum mechanics (QM) has some degree of objectivity. It may be useful for researchers who are interested in quantum foundations, but do not belong to the QBism-community, because I tried to analyze essentials of QBism critically (i.e., not just emphasizing its advantages, as in a typical QBist publication). QBists, too, may be interested in comments of an external observer who monitored development of this approach to QM during the last 16 years. The second part of the paper is devoted to interpretations of probability, objective versus subjective, and views of Kolmogorov, von Mises, and de Finetti. Finally, de Finetti's approach to methodology of science is presented and compared with QBism.
description: polishing text, better expressions
Effect of preoperative self-efficacy pain education program on self-efficacy to report pain, pain intensity, and pain interferences among patients undergoing oral and maxillofacial surgery
Creators: name: Zhou, Mei
Publisher: name: Rangsit University
Year: 2022
Subjects: after oral and maxillofacial surgery
pain intensity
pain interferences
preoperative educational program
self-efficacy to report postoperative pain

description: Journal of Current Science and Technology, 12, 2, 265-273
Energy cascade in internal wave attractors
Creators: name: Brouzet, Christophe
name: Ermanyuk, Evgeny
name: Joubaud, Sylvain
name: Sibgatullin, Ilias
name: Dauxois, Thierry
Publisher: name: arXiv
Year: 2016
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: FOS: Physical sciences

description: One of the pivotal questions in the dynamics of the oceans is related to the cascade of mechanical energy in the abyss and its contribution to mixing. Here, we propose internal wave attractors in the large amplitude regime as a unique self-consistent experimental and numerical setup that models a cascade of triadic interactions transferring energy from large-scale monochro-matic input to multi-scale internal wave motion. We also provide signatures of a discrete wave turbulence framework for internal waves. Finally, we show how beyond this regime, we have a clear transition to a regime of small-scale high-vorticity events which induce mixing. Introduction.
Effect of drying conditions on the phytochemicals and qualities of herbal tea made from the silk and cobs of red sweet corn
Creators: name: Phornpan Ji-U
Publisher: name: Rangsit University
Year: 2022
Subjects: anthocyanins content
corn silk and cobs
hot air dryer
infusion tea
sun drying
total phenolic content

description: Journal of Current Science and Technology, 12, 2, 286-296
Precision Muon Tracking Detectors for High-Energy Hadron Colliders
Creators: name: Gadow, Philipp
name: Kortner, Oliver
name: Kroha, Hubert
name: Richter, Robert
Publisher: name: arXiv
Year: 2016
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Small-diameter muon drift tube (sMDT) chambers with 15 mm tube diameter are a cost-effective technology for high-precision muon tracking over large areas at high background rates as expected at future high-energy hadron colliders including HL-LHC. The chamber design and construction procedures have been optimized for mass production and provide sense wire positioning accuracy of better than 10 ?m. The rate capability of the sMDT chambers has been extensively tested at the CERN Gamma Irradiation Facility. It exceeds the one of the ATLAS muon drift tube (MDT) chambers, which are operated at unprecedentedly high background rates of neutrons and gamma-rays, by an order of magnitude, which is sufficient for almost the whole muon detector acceptance at FCC-hh at maximum luminosity. sMDT operational and construction experience exists from ATLAS muon spectrometer upgrades which are in progress or under preparation for LHC Phase 1 and 2.
Identification of SARS-CoV-2 packaging signals via bacteria-based inhibition assay
Creators: name: Sarin Chimnaronk
Publisher: name: Rangsit University
Year: 2022
Subjects: bacteria-based assay
coronavirus
nucleocapsid protein
packaging signal
SARS-CoV-2

description: Journal of Current Science and Technology, 12, 2, 297-305
NEC violation in mimetic cosmology revisited
Creators: name: Ijjas, Anna
name: Ripley, Justin
name: Steinhardt, Paul J.
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In the context of Einstein gravity, if the null energy condition (NEC) is satisfied, the energy density in expanding space-times always decreases while in contracting space-times the energy density grows and the universe eventually collapses into a singularity. In particular, no non-singular bounce is possible. It is, though, an open question if this energy condition can be violated in a controlled way, i.e., without introducing pathologies, such as unstable negative-energy states or an imaginary speed of sound. In this paper, we will re-examine the claim that the recently proposed mimetic scenario can violate the NEC without pathologies. We show that mimetic cosmology is prone to gradient instabilities even in cases when the NEC is satisfied (except for trivial examples). Most interestingly, the source of the instability is always the Einstein-Hilbert term in the action. The matter stress-energy component does not contribute spatial gradient terms but instead makes the problematic curvature modes dynamical. We also show that mimetic cosmology can be understood as a singular limit of known, well-behaved theories involving higher-derivative kinetic terms and discuss ways of removing the instability.
description: 7 pages
Identification of volatile bioactive compounds from the pericarp and seed extracts of Alpinia mutica Roxb. by GC–MS analysis
Creators: name: Nungruthai Suphrom
Publisher: name: Rangsit University
Year: 2022
Subjects: Alpinia mutica
bioactive compounds
GC–MS
orchid ginger
pericarp
seed
volatile component

description: Journal of Current Science and Technology, 12, 2, 306-314
Interpreting the subtle spectral variations of the 11.2 and 12.7 μm polycyclic aromatic hydrocarbon bands
Creators: name: Shannon, M. J.
name: Stock, D. J.
name: Peeters, E.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We report new properties of the 11 and 12.7 μm emission complexes of polycyclic aromatic hydrocarbons (PAHs) by applying a Gaussian-based decomposition technique. Using high-resolution \textit{Spitzer} Space Telescope data, we study in detail the spectral and spatial characteristics of the 11 and 12.7 μm emission bands in maps of reflection nebulae NGC 7023 and NGC 2023 (North and South) and the star-forming region M17. Profile variations are observed in both the 11 and 12.7 μm emission bands. We identify a neutral contribution to the traditional 11.0 μm PAH band and a cationic contribution to the traditional 11.2 μm band, the latter of which affects the PAH class of the 11.2 μm emission in our sample. The peak variations of the 12.7 μm complex are explained by the competition between two underlying blended components. The spatial distributions of these components link them to cations and neutrals. We conclude that the 12.7 μm emission originates in both neutral and cationic PAHs, lending support to the use of the 12.7/11.2 intensity ratio as a charge proxy.
description: 20 pages, 14 figures, Accepted for publication in ApJ
Slides for "Análisis Comparativo de Técnicas de Estimación en el Análisis de Redes Aplicado a la Investigación en Docencia Universitaria"
Creators: name: García O'Diana, Angel Alfonso
Publisher: name: Zenodo
Year: 2024

description: Slides can be found on quarto repository: https://agarciao10.quarto.pub/master-thesis-slides/
Quality improvement of plant-based patty using methylcellulose, κ-carrageenan and xanthan gum
Creators: name: Duenchay Tunnarut
Publisher: name: Rangsit University
Year: 2022
Subjects: plant-based patty
consumer acceptance
hydrocolloids
shear force
textured soy protein
texture profile analysis

description: Journal of Current Science and Technology, 12, 2, 327-335
Physics case for a polarised target for AFTER@LHC
Creators: name: Lansberg, J. P.
name: Anselmino, M.
name: Arnaldi, R.
name: Brodsky, S. J.
name: Chambert, V.
name: Didelez, J. P.
name: Echevarria, M. G
name: Ferreiro, E. G.
name: Fleuret, F.
name: Gao, Y.
name: Genolini, B.
name: Hadjidakis, C.
name: Hrivnacova, I.
name: Kikola, D.
name: Kurepin, A.
name: Lorce, C.
name: Massacrier, L.
name: Nass, A.
name: Pisano, C.
name: Schienbein, I.
name: Schlegel, M.
name: Scomparin, E.
name: Seixas, J.
name: Signori, A.
name: Steffens, E.
name: Topilskaya, N.
name: Uggerhoej, B. Trzeciak U. I.
name: Uras, A.
name: Ulrich, R.
name: Yang, Z.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We review a number of ideas put forward in favour of the use of a polarised target along with the proposed idea of a fixed-target experiment using the LHC beams -- AFTER@LHC. A number of recent studies have shown that single transverse-spin asymmetries (STSAs) are large enough to be precisely measured in the region accessible with AFTER@LHC, in particular as regards the Drell-Yan process as well as single-pion, isolated-photon and jet production. AFTER@LHC with a polarised target would also be the ideal experimental set-up to measure the gluon Sivers effect via a number of original quarkonium STSA studies. We discuss first figures-of-merit based on simulations for AFTER@LHC with a polarised target.
description: 7 pages, 2 figures, 1 table, LaTeX. Proceedings of the XVIth International Workshop in Polarized Sources, Targets, and Polarimetry, PSTP2015, 14-18 September 2015, Bochum, Germany
Earthworm-bioturbated soil and crab-bioturbated soil: comparative physicochemical and microbial properties
Creators: name: Dada, Ebenezer Olasunkanmi
Publisher: name: Rangsit University
Year: 2022
Subjects: bioturbation
organic carbon
soil carbon
soil nitrogen
wetlands

description: Journal of Current Science and Technology, 12, 2, 349-357
Innovation for plant-based foods: Allergen-free vegan meat and egg products from rice processing by-products
Creators: name: Yupakanit Puangwerakul
Publisher: name: Rangsit University
Year: 2022
Subjects: allergy free
bioactive compound
nutritional value
plant-based food
rice protein hydrolysate
vegan egg
vegan meat

description: Journal of Current Science and Technology, 12, 2, 358-371
Towards robust statistical inference for complex computer models
Creators: name: Oberpriller, Johannes
name: Cameron, David R.
name: Dietze, Michael C.
name: Hartig, Florian
name: Coulson, Tim
Publisher: name: Universität Regensburg
Year: 2021
Subjects: subject: Bayesian Inference, bias correction, biased models, data imbalance, robust inference
subject: 580 Pflanzen (Botanik)

description: Ecologists increasingly rely on complex computer simulations to forecast ecological systems. To make such forecasts precise, uncertainties in model parameters and structure must be reduced and correctly propagated to model outputs. Naively using standard statistical techniques for this task, however, can lead to bias and underestimation of uncertainties in parameters and predictions. Here, we explain why these problems occur and propose a framework for robust inference with complex computer simulations. After having identified that model error is more consequential in complex computer simulations, due to their more pronounced nonlinearity and interconnectedness, we discuss as possible solutions data rebalancing and adding bias corrections on model outputs or processes during or after the calibration procedure. We illustrate the methods in a case study, using a dynamic vegetation model. We conclude that developing better methods for robust inference of complex computer simulations is vital for generating reliable predictions of ecosystem responses.
MESA Isochrones and Stellar Tracks (MIST). I: Solar-Scaled Models
Creators: name: Choi, Jieun
name: Dotter, Aaron
name: Conroy, Charlie
name: Cantiello, Matteo
name: Paxton, Bill
name: Johnson, Benjamin D.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: This is the first of a series of papers presenting the Modules for Experiments in Stellar Astrophysics (MESA) Isochrones and Stellar Tracks (MIST) project, a new comprehensive set of stellar evolutionary tracks and isochrones computed using MESA, a state-of-the-art open-source 1D stellar evolution package. In this work, we present models with solar-scaled abundance ratios covering a wide range of ages ($5 \leq \rm \log(Age)\;[yr] \leq 10.3$), masses ($0.1 \leq M/M_{\odot} \leq 300$), and metallicities ($-2.0 \leq \rm [Z/H] \leq 0.5$). The models are self-consistently and continuously evolved from the pre-main sequence to the end of hydrogen burning, the white dwarf cooling sequence, or the end of carbon burning, depending on the initial mass. We also provide a grid of models evolved from the pre-main sequence to the end of core helium burning for $-4.0 \leq \rm [Z/H] < -2.0$. We showcase extensive comparisons with observational constraints as well as with some of the most widely used existing models in the literature. The evolutionary tracks and isochrones can be downloaded from the project website at http://waps.cfa.harvard.edu/MIST/.
description: Accepted to ApJ
A comparison between grid and particle methods on the small-scale dynamo in magnetised supersonic turbulence
Creators: name: Tricco, Terrence S.
name: Price, Daniel J.
name: Federrath, Christoph
Publisher: name: arXiv
Year: 2016
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We perform a comparison between the smoothed particle magnetohydrodynamics (SPMHD) code, Phantom, and the Eulerian grid-based code, Flash, on the small-scale turbulent dynamo in driven, Mach 10 turbulence. We show, for the first time, that the exponential growth and saturation of an initially weak magnetic field via the small-scale dynamo can be successfully reproduced with SPMHD. The two codes agree on the behaviour of the magnetic energy spectra, the saturation level of magnetic energy, and the distribution of magnetic field strengths during the growth and saturation phases. The main difference is that the dynamo growth rate, and its dependence on resolution, differs between the codes, caused by differences in the numerical dissipation and shock capturing schemes leading to differences in the effective Prandtl number in Phantom and Flash.
description: Accepted for publication in MNRAS, 17 pages, 16 figures
Relation between quantum effects in General Relativity and embedding theory
Creators: name: Paston, S. A.
Publisher: name: arXiv
Year: 2015
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We present results relevant to the relation between quantum effects in a Riemannian space and on the surface appearing as a result of its isometric embedding in a flat space of a higher dimension. We discuss the mapping between the Hawking effect fixed by an observer in the Riemannian space with a horizon and the Unruh effect related to an accelerated motion of this observer in the ambient space. We present examples for which this mapping holds and examples for which there is no mapping. We describe the general form of the hyperbolic embedding of the metric with a horizon smoothly covering the horizon and prove that there is a Hawking into Unruh mapping for this embedding. We also discuss the possibility of relating two-point functions in a Riemannian space and the ambient space in which it is embedded. We obtain restrictions on the geometric parameters of the embedding for which such a relation is known.
description: LaTeX, 18 pages
Resolved atomic lines reveal outflows in two ultraluminous X-ray sources
Creators: name: Pinto, Ciro
name: Middleton, Matthew J.
name: Fabian, Andrew C.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Ultraluminous X-ray sources are extragalactic, off-nucleus, point sources in galaxies with an X-ray luminosity above 3x10^39 erg/s, thought to be powered by accretion onto a compact object. Possible explanations include accretion onto neutron stars with strong magnetic fields, stellar-mass black holes (< 20 Msolar) at or in excess of the classical Eddington limit or intermediate-mass black holes (10^3-5 Msolar). The lack of sufficient energy resolution in previous analyses has hitherto prevented an unambiguous identification of any emission or absorption lines in the X-ray band, thereby precluding a detailed analysis of the accretion flow. Here we report the presence of X-ray emission lines arising from highly ionized iron, oxygen and neon with a cumulative significance > 5 sigma, and blueshifted (~0.2c) absorption lines (5 sigma) in the high-resolution X-ray spectrum of the ultraluminous X-ray source NGC 1313 X-1. In a similar source, NGC 5408 X-1, we also detect emission lines at rest and blueshifted absorption. The blueshifted absorption lines must occur in a fast outflowing gas, whereas the emission lines originate in slow-moving gas around the source. We conclude that the compact object is surrounded by powerful winds with an outflow velocity of about 0.2c as predicted by models of accreting supermassive black holes and hyper-accreting stellar mass black holes.
description: 16 pages, 11 figures, 2 tables, published by Nature on 27 April 2016
Dislocation patterning in a 2D continuum theory of dislocations
Creators: name: Groma, Istvan
name: Zaiser, Michael
name: Ispanovity, Peter Dusan
Publisher: name: arXiv
Year: 2016
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Understanding the spontaneous emergence of dislocation patterns during plastic deformation is a long standing challenge in dislocation theory. During the past decades several phenomenological continuum models of dislocation patterning were proposed, but few of them (if any) are derived from microscopic considerations through systematic and controlled averaging procedures. In this paper we present a 2D continuum theory that is obtained by systematic averaging of the equations of motion of discrete dislocations. It is shown that in the evolution equations of the dislocation densities diffusion like terms neglected in earlier considerations play a crucial role in the length scale selection of the dislocation density fluctuations. It is also shown that the formulated continuum theory can be derived from an averaged energy functional using the framework of phase field theories. However, in order to account for the flow stress one has in that case to introduce a nontrivial dislocation mobility function, which proves to be crucial for the instability leading to patterning.
Autocrine signaling and quorum sensing: Extreme ends of a common spectrum
Creators: name: Doğaner, Berkalp A.
name: Yan, Lawrence K. Q.
name: Youk, Hyun
Publisher: name: arXiv
Year: 2016
Subjects: subject: Cell Behavior (q-bio.CB)
subject: FOS: Biological sciences

description: "Secrete-and-sense cells" can communicate by secreting a signaling molecule while also producing a receptor that detects the molecule. The cell can potentially "talk" to itself ("self-communication") or talk to neighboring cells with the same receptor ("neighbor-communication"). The predominant forms of secrete-and-sense cells are self-communicating "autocrine cells" that are largely found in animals, and neighbor-communicating "quorum sensing cells" that are mostly associated with bacteria. While assumed to function independent of one another, recent studies have discovered quorum sensing organs and autocrine signaling microbes. Moreover, similar types of genetic circuits control many autocrine and quorum sensing cells. We outline these recent findings and explain how autocrine and quorum sensing are two sides of a many-sided "dice" created by the versatile secrete-and-sense cell.
description: Review - 24 pages in total, including main text and 4 figures, Trends in Cell Biology (E-pub, ahead of print version) (December 2015)
Are Some Milky Way Globular Clusters Hosted by Undiscovered Galaxies?
Creators: name: Zaritsky, Dennis
name: Crnojević, Denija
name: Sand, David J.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The confirmation of a globular cluster (GC) in the recently discovered ultrafaint galaxy Eridanus II (Eri II) motivated us to examine the question posed in the title. After estimating the halo mass of Eri II using a published stellar mass - halo mass relation, the one GC in this galaxy supports extending the relationship between the number of GCs hosted by a galaxy and the galaxy's total mass about two orders of magnitude in stellar mass below the previous limit. For this empirically determined specific frequency of between 0.06 and 0.39 globular clusters per 10$^9$ $M_\odot$ of total mass, the surviving Milky Way (MW) subhalos with masses smaller than $10^{10} M_\odot$ could host as many as 5 to 31 GCs, broadly consistent with the actual population of outer halo MW GCs, although matching the radial distribution in detail remains a challenge. Using a subhalo mass function from published high resolution numerical simulations and a Poissonian model for populating those halos with the aforementioned empirically constrained frequency, we find that about 90$\%$ of these GCs lie in lower-mass subhalos than that of Eri II. From what we know about the stellar mass-halo mass function, the subhalo mass function, and the mass-normalized GC specific frequency, we conclude that some of the MW's outer halo GCs are likely to be hosted by undetected subhalos with extremely modest stellar populations.
description: 5 pages, 4 figures; ApJL in press
A path-integral approach to the problem of time
Creators: name: Amaral, M. M.
name: Bojowald, Martin
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Quantum transition amplitudes are formulated for a model system with local internal time, using path integrals. The amplitudes are shown to be more regular near a turning point of internal time than could be expected based on existing canonical treatments. In particular, a successful transition through a turning point is provided in the model system, together with a new definition of such a transition in general terms. Some of the results rely on a fruitful relation between the problem of time and general Gribov problems.
description: 19 pages, v2: additional remarks on topological turning points
Silicon Photonics WDM Transceiver with SOA and Semiconductor Mode-Locked Laser
Creators: name: Moscoso-Mártir, Alvaro
name: Müller, Juliana
name: Hauck, Johannes
name: Chimot, Nicolas
name: Setter, Rony
name: Badihi, Avner
name: Rasmussen, Daniel E.
name: Garreau, Alexandre
name: Nielsen, Mads
name: Islamova, Elmira
name: Romero-García, Sebastián
name: Shen, Bin
name: Sandomirsky, Anna
name: Rockman, Sylvie
name: Li, Chao
name: Azadeh, Saeed Sharif
name: Lo, Guo-Qiang
name: Mentovich, Elad
name: Merget, Florian
name: Lelarge, François
name: Witzens, Jeremy
Publisher: name: arXiv
Year: 2016
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We demonstrate a complete Silicon Photonics WDM link relying on a single section semiconductor mode-locked laser and a single SOA to support up to 12 multiplexed channels with a bit error rate of 1e-12 at serial data rates of 14 Gbps without channel pre-emphasis, equalization or forward error correction. Individual channels reach error free operation at 25 Gbps and multi-channel operation at 25 Gbps is shown to be compatible with standard 7% overhead hard decision forward error correction. Silicon Photonics transmitter and receiver chips are hybridly integrated with driver and receiver electronics. A detailed link model is derived and verified. Particular emphasis is placed on accurate system level modeling of laser RIN, SOA amplified spontaneous emission noise and receiver noise. The impact of the electrical receiver bandwidth and non-Gaussian statistics on level dependent amplified spontaneous emission noise are investigated in detail. The channel count scalability as limited by SOA saturation is further analyzed taking cross gain modulation and four wave mixing into account. While semiconductor mode-locked lasers have been identified as a potential light source for low cost Datacom WDM transceivers for some time, this is, to the best of our knowledge, the first comprehensive investigation of the overall link budget in a Silicon Photonics implementation showing this technology to be a credible contender for low latency datacenter interconnects.
Broadband illumination of superconducting pair breaking photon detectors
Creators: name: Guruswamy, Tejas
name: Goldie, David J.
name: Withington, Stafford
Publisher: name: arXiv
Year: 2016
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Understanding the detailed behaviour of superconducting pair breaking photon detectors such as Kinetic Inductance Detectors requires knowledge of the nonequilibrium quasiparticle energy distributions. We have previously calculated the steady state distributions resulting from uniform absorption of monochromatic sub gap and above gap frequency radiation by thin films. In this work, we use the same methods to calculate the effect of illumination by broadband sources, such as thermal radiation from astrophysical phenomena or from the readout system. Absorption of photons at multiple above gap frequencies is shown to not change the structure of the quasiparticle energy distribution close to the superconducting gap. Hence for typical absorbed powers, we find the effects of absorption of broadband pair breaking radiation can simply be considered as the sum of the effects of absorption of many monochromatic sources. Distribution averaged quantities, like quasiparticle generation effciency $η$, match exactly a weighted average over the bandwidth of the source of calculations assuming a monochromatic source. For sub gap frequencies, however, distributing the absorbed power across multiple frequencies does change the low energy quasiparticle distribution. For moderate and high absorbed powers, this results in a significantly larger $η$ - a higher number of excess quasiparticles for a broadband source compared to a monochromatic source of equal total absorbed power. Typically in KIDs the microwave power absorbed has a very narrow bandwidth, but in devices with broad resonance characteristics (low quality factors), this increase in $η$ may be measurable.
description: 7 pages, 9 figures
Role of Sn impurity on electronic topological transitions in 122 Fe-based superconductors
Creators: name: Ghosh, Haranath
name: Sen, Smritijit
Publisher: name: arXiv
Year: 2016
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We show that only a few percentage of Sn doping at the Ba site on BaFe$_2$As$_2$, can cause electronic topological transition, namely, the Lifshitz transition. A hole like d$_{xy}$ band of Fe undergoes electron like transition due to 4\% Sn doping. Lifshitz transition is found in BaFe$_2$As$_2$ system around all the high symmetry points. Our detailed first principles simulation predicts absence of any Lifshitz transition in other 122 family compounds like SrFe$_2$As$_2$, CaFe$_2$As$_2$. This work bears practical significance due to the facts that a few percentage of Sn impurity is in-built in tin-flux grown single crystals method of synthesizing 122 materials and inter-relationship among the Lifshitz transition, magnetism and superconductivity.
description: 22 pages, 9 figures, Accepted by Journal of Alloys and Compounds (2016)
The Star Formation Rate Efficiency of Neutral Atomic-dominated Hydrogen Gas in the Outskirts of Star Forming Galaxies from z~1 to z~3
Creators: name: Rafelski, Marc
name: Gardner, Jonathan P.
name: Fumagalli, Michele
name: Neeleman, Marcel
name: Teplitz, Harry I.
name: Grogin, Norman
name: Koekemoer, Anton M.
name: Scarlata, Claudia
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Current observational evidence suggests that the star formation rate (SFR) efficiency of neutral atomic hydrogen gas measured in Damped Ly-alpha Systems (DLAs) at z~3 is more than 10 times lower than predicted by the Kennicutt-Schmidt (KS) relation. To understand the origin of this deficit, and to investigate possible evolution with redshift and galaxy properties, we measure the SFR efficiency of atomic gas at z~1, z~2, and z~3 around star-forming galaxies. We use new robust photometric redshifts in the Hubble Ultra Deep Field to create galaxy stacks in these three redshift bins, and measure the SFR efficiency by combining DLA absorber statistics with the observed rest-frame UV emission in the galaxies' outskirts. We find that the SFR efficiency of HI gas at z>1 is ~1-3% of that predicted by the KS relation. Contrary to simulations and models that predict a reduced SFR efficiency with decreasing metallicity and thus with increasing redshift, we find no significant evolution in the SFR efficiency with redshift. Our analysis instead suggests that the reduced SFR efficiency is driven by the low molecular content of this atomic-dominated phase, with metallicity playing a secondary effect in regulating the conversion between atomic and molecular gas. This interpretation is supported by the similarity between the observed SFR efficiency and that observed in local atomic-dominated gas, such as in the outskirts of local spiral galaxies and local dwarf galaxies.
description: Accepted for publication in the Astrophysical Journal
Carbon nanoparticles in the acoustic field in the vicinity of the arc discharge
Creators: name: Shneider, M. N.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: The paper considers an effect of intensive ultrasound on the suspension of soot microparticles and nanoparticles in the inert gas, resulting in the coagulation of relatively large soot particles and leading to the improvement of the efficiency of production of nanoparticles, as has been observed in experiments. The effect of the particles charge on the possibility of coagulation is analyzed.
Expansion of polynomial Lie group integrals in terms of certain maps on surfaces, and factorizations of permutations
Creators: name: Novaes, Marcel
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mathematical Physics (math-ph)
subject: Combinatorics (math.CO)
subject: Group Theory (math.GR)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: Using the diagrammatic approach to integrals over Gaussian random matrices, we find a representation for polynomial Lie group integrals as infinite sums over certain maps on surfaces. The maps involved satisfy a specific condition: they have some marked vertices, and no closed walks that avoid these vertices. We also formulate our results in terms of permutations, arriving at new kinds of factorization problems.
description: 21 pages, 7 figures
A basis for the implicit representation of planar rational cubic Bézier curves
Creators: name: Barrowclough, Oliver J. D.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Numerical Analysis (math.NA)
subject: Computational Geometry (cs.CG)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: We present an approach to finding the implicit equation of a planar rational parametric cubic curve, by defining a new basis for the representation. The basis, which contains only four cubic bivariate polynomials, is defined in terms of the Bézier control points of the curve. An explicit formula for the coefficients of the implicit curve is given. Moreover, these coefficients lead to simple expressions which describe aspects of the geometric behaviour of the curve. In particular, we present an explicit barycentric formula for the position of the double point, in terms of the Bézier control points of the curve. We also give conditions for when an unwanted singularity occurs in the region of interest. Special cases in which the method fails, such as when three of the control points are collinear, or when two points coincide, will be discussed separately.
Hawking radiation screening and Penrose process shielding in the Kerr black hole
Creators: name: Caughey, Eamon Mc
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The radial motion of massive particles in the equatorial plane of the Kerr black hole is considered. Screening of the Hawking radiation and shielding of the Penrose process are examined (both insides and outside the ergosphere) and their effects on the evaporation of the black hole is studied. In particular, the locus and width of a classically forbidden region and their dependence on the particle's angular momentum and energy is analysed. Tunneling of particles between the boundaries of this region is considered and the transmission coefficient is determined.
description: Accepted for publication by the European Physical journal C. 15 Pages, 12 figures
Functional Connectivity Patterns that Distinguish Stuttering from Non-Stuttering Children
Creators: name: Chang, Soo-Eun
name: Höbler, Fiona
name: Yanni Liu
Publisher: name: OSF Registries
Year: 2023
Subjects: subject: Speech and Hearing Science
subject: Behavioral Neurobiology
subject: Medical Sciences
subject: Developmental Neuroscience
subject: Speech Pathology and Audiology
subject: Neurosciences
subject: FOS: Clinical medicine
subject: Medicine and Health Sciences
subject: Life Sciences
subject: Communication Sciences and Disorders
subject: Neuroscience and Neurobiology
subject: Basal Ganglia Thalamocortical Circuitry
subject: Confirmatory Model
subject: Connectivity
subject: GIMME
subject: Network Mapping
subject: Resting state fMRI
subject: Speech Production
subject: Stuttering

description: The application of resting-state functional brain connectivity patterns within and between the components of a neural network model of speech production to predict speech network development in children who do and do not stutter. Confirmatory subgrouping based on functional connectivity will be achieved using the CS-GIMME approach.
Electroweak Symmetry Breaking and the Higgs Boson
Creators: name: Pich, Antonio
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The first LHC run has confirmed the Standard Model as the correct theory at the electroweak scale, and the existence of a Higgs-like particle associated with the spontaneous breaking of the electroweak gauge symmetry. These lectures overview the present knowledge on the Higgs boson and discuss alternative scenarios of electroweak symmetry breaking which are already being constrained by the experimental data.
description: Lectures given at the 55th Cracow School of Theoretical Physics, Zakopane, Poland, 20-28 June 2015. 30 pages, 15 figures
Fluid balance in surfers: a scoping review
Creators: name: Brandon, Abigail
name: Canetti, Elisa F.D.
name: Cox, Gregory
name: Furness, James
name: Kemp-Smith, Kevin
name: Abery, Philip
name: Troja, Marie
name: Winny, Jasen
Publisher: name: OSF Registries
Year: 2023
Subjects: subject: Medicine and Health Sciences
subject: Life Sciences

description: Our research aims are: To determine the influence of surfing on fluid balance among the surfing population. Research Objectives: 1. Assess the volume and type of scientific literature specific to surfing and fluid balance. 2. Provide a summary of all studies reporting on fluid balance in surfing. 3. Identify knowledge gaps in the topic of surfing and ‘fluid balance’. Research question: a. What factors specific to surfing influence fluid balance?
The Impact of Microaggressions on Trans and Gender-Diverse People’s Mental Health: A Scoping Review
Creators: name: Oxlad, Melissa
name: Kimber, Bethany Ellen
Publisher: name: OSF Registries
Year: 2023
Subjects: subject: Other Psychiatry and Psychology
subject: Psychiatry and Psychology
subject: Medicine and Health Sciences

description: Objective: This study aims to identify and summarise the existing literature regarding how microaggressions impact trans and gender-diverse people’s mental health. Additionally, this study aims to identify gaps in the existing literature and recommend areas for future research. Introduction: Trans and gender-diverse individuals experience disproportionate rates of mental illness and discrimination. This discrimination often occurs as microaggressions (i.e., behaviours and statements, intentional or unintentional, that communicate derogatory messages towards members of marginalised groups). Microaggressions have been shown to negatively impact the mental health of a range of marginalised groups. However, limited studies appear to be exploring the psychological impact of microaggressions on trans and gender-diverse people despite trans and gender-diverse people experiencing high rates of microaggressions. Inclusion criteria: Peer-reviewed studies will be eligible for inclusion if published in English and report primary data exploring the impact of microaggressions on trans and gender-diverse people’s mental health obtained using qualitative, quantitative or mixed methods. Methods: The study will use a systematic scoping review approach to identify and synthesise existing research about the impact of microaggressions on trans and gender-diverse people’s mental health. Six online databases will be searched. Results: The final analysis method will be determined once the studies have been identified, but the data will likely be best analysed and reported using a descriptive narrative approach.
Augmenting WFIRST Microlensing with a Ground-based Telescope Network
Creators: name: Zhu, Wei
name: Gould, Andrew
Publisher: name: arXiv
Year: 2016
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Augmenting the \emph{WFIRST} microlensing campaigns with intensive observations from a ground-based network of wide-field survey telescopes would have several major advantages. First, it would enable full two-dimensional (2-D) vector microlens parallax measurements for a substantial fraction of low-mass lenses as well as planetary and binary events that show caustic crossing features. For a significant fraction of the free-floating planet (FFP) events and all caustic-crossing planetary/binary events, these 2-D parallax measurements directly lead to complete solutions (mass, distance, transverse velocity) of the lens object (or lens system). For even more events, the complementary ground-based observations will yield 1-D parallax measurements. Together with the 1-D parallaxes from \emph{WFIRST} alone, they can probe the entire mass range $M\gtrsim M_\oplus$. For luminous lenses, such 1-D parallax measurements can be promoted to complete solutions (mass, distance, transverse velocity) by high-resolution imaging. This would provide crucial information not only about the hosts of planets and other lenses, but also enable a much more precise Galactic model. Other benefits of such a survey include improved understanding of binaries (particularly with low mass primaries), and sensitivity to distant ice-giant and gas-giant companions of \emph{WFIRST} lenses that cannot be detected by \emph{WFIRST} itself due to its restricted observing windows. Existing ground-based microlensing surveys can be employed if \emph{WFIRST} is pointed at lower-extinction fields than is currently envisaged. This would come at some cost to the event rate. Therefore the benefits of improved characterization of lenses must be weighed against these costs.
description: 15 pages, 4 figures; submitted to JKAS