cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
On the experimental investigation of the electric and magnetic response of a single nano-structure
Creators: name: Banzer, P.
name: Peschel, U.
name: Quabis, S.
name: Leuchs, G.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences
subject: 78-05

description: We demonstrate an experimental method to separately test the optical response of a single sub-wavelength nano-structure to tailored electric and magnetic field distributions in the optical domain. For this purpose a highly focused y-polarized TEM10-mode is used which exhibits spatially separated longitudinal magnetic and transverse electric field patterns. By displacing a single sub-wavelength nano-structure, namely a single split-ring resonator (SRR), in the focal plane, different coupling scenarios can be achieved. It is shown experimentally that the single split-ring resonator tested here responds dominantly as an electric dipole. A much smaller but yet statistically significant magnetic dipole contribution is also measured by investigating the interaction of a single SRR with a magnetic field component perpendicular to the SRR plane (which is equivalent to the curl of the electric field) as well as by analyzing the intensity and polarization distribution of the scattered light with high spatial resolution. The developed experimental setup as well as the measurement techniques presented in this paper are a versatile tool to investigate the optical properties of single sub-wavelength nano-structures.
description: 19 pages, 9 figures, accepted by Optics Express
Radiative transfer with scattering for domain-decomposed 3D MHD simulations of cool stellar atmospheres
Creators: name: Hayek, W.
name: Asplund, M.
name: Carlsson, M.
name: Trampedach, R.
name: Collet, R.
name: Gudiksen, B. V.
name: Hansteen, V. H.
name: Leenaarts, J.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present the implementation of a radiative transfer solver with coherent scattering in the new BIFROST code for radiative magneto-hydrodynamical (MHD) simulations of stellar surface convection. The code is fully parallelized using MPI domain decomposition, which allows for large grid sizes and improved resolution of hydrodynamical structures. We apply the code to simulate the surface granulation in a solar-type star, ignoring magnetic fields, and investigate the importance of coherent scattering for the atmospheric structure. A scattering term is added to the radiative transfer equation, requiring an iterative computation of the radiation field. We use a short-characteristics-based Gauss-Seidel acceleration scheme to compute radiative flux divergences for the energy equation. The effects of coherent scattering are tested by comparing the temperature stratification of three 3D time-dependent hydrodynamical atmosphere models of a solar-type star: without scattering, with continuum scattering only, and with both continuum and line scattering. We show that continuum scattering does not have a significant impact on the photospheric temperature structure for a star like the Sun. Including scattering in line-blanketing, however, leads to a decrease of temperatures by about 350\,K below log tau < -4. The effect is opposite to that of 1D hydrostatic models in radiative equilibrium, where scattering reduces the cooling effect of strong LTE lines in the higher layers of the photosphere. Coherent line scattering also changes the temperature distribution in the high atmosphere, where we observe stronger fluctuations compared to a treatment of lines as true absorbers.
description: A&A, in press
The Impact of Efficient Particle Acceleration on the Evolution of Supernova Remnants in the Sedov-Taylor Phase
Creators: name: Castro, Daniel
name: Slane, Patrick
name: Patnaude, Daniel J.
name: Ellison, Donald C.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We investigate the effects of the efficient production of cosmic rays on the evolution of supernova remnants (SNRs) in the adiabatic Sedov-Taylor phase. We model the SNR by coupling the hydrodynamic evolution with nonlinear diffusive shock acceleration (DSA), and track self-consistently the ionization state of the shock-heated plasma. Using a plasma emissivity code and the results of the model, we predict the thermal X-ray emission and combine it with the non-thermal component in order to obtain the complete spectrum in this energy range. Hence, we study how the interpretation of thermal X-ray observations is affected by the efficiency of the DSA process, and find that, compared to test particle cases, the efficient DSA example yields a smaller shock radius and speed, a larger compression ratio, and lower intensity X-ray thermal emission. We also find that a model where the shock is not assumed to produce CRs can fit the X-ray observational properties of an example with efficient particle acceleration, with a different set of input parameters, and in particular a much lower explosion energy. Additionally, we model the broadband non-thermal emission, and investigate what signatures result from the acceleration of particles.
description: 8 Pages, 9 figures. Accepted for publication in ApJ
Tunable Band Structure Effects on Ballistic Transport in Graphene Nanoribbons
Creators: name: Roslyak, Oleksiy
name: Gumbs, Godfrey
name: Huang, Danhong
Publisher: name: arXiv
Year: 2010
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Graphene nanoribbons (GNR) in mutually perpendicular electric and magnetic fields are shown to exhibit dramatic changes in their band structure and electron transport properties. A strong electric field across the ribbon induces multiple chiral Dirac points, closing the semiconducting gap in armchair GNR's. A perpendicular magnetic field induces partially formed Landau levels as well as dispersive surface-bound states. Each of the applied fields on its own preserves the even symmetry $E_{k} = E_{-k}$ of the subband dispersion. When applied together, they reverse the dispersion parity to be odd and gives $E_{e,k} = -E_{h,-k}$ and mix the electron and hole subbands within the energy range corresponding to the change in potential across the ribbon. This leads to oscillations of the ballistic conductance within this energy range.
Drawbacks of applying perturbative schemes to meson spectroscopy
Creators: name: Khemchandani, K. P.
name: van Beveren, Eef
name: Rupp, George
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study meson-meson scattering in a soluble model which describes asymptotically free mesons and confined quark-antiquark pairs via coupled channels. Concretely, the two scattered mesons are assumed to interact through s-channel meson-exchange diagrams. Furthermore, we develop a perturbative expansion of the model, and show that the thus found resonance pole positions, including contributions up to fourth order in perturbation theory, completely fail to reproduce the exact results. This shows that the resonance predictions based on perturbative approximations in quark models may be highly unreliable.
Periodic review inventory policy with variable ordering cost, lead time, and backorder rate
Creators: name: Nughthoh Arfawi Kurdhi
name: Doewes, Rumi Iqbal
Publisher: name: Research and Development Office, Prince of Songkla University
Year: 2019
Subjects: periodic review
capital investment
price discount
ordering cost
stochastic demand
partial backlogging

description: Songklanakarin Journal of Science and Technology, 41, 1, 1-11
New York Times Upshot/Siena College: October 2018 Texas 23 Poll
Creators: name: New York Times
Publisher: name: Roper Center for Public Opinion Research
Year: 2021

description: Likelihood of voting in 2018 election (2); Texas Congressional District 23 (1); Democratic candidate Gina Ortiz Jones (1); Republican candidate Will Hurd (1); vote for Democrat/Republican for Congress (1); opinion of various public figures (2); respondent would like Democrats/Republicans to control House of Representatives (1); President Donald Trump job performance (1); political partisanship (1).
Effects of distress, alarm, and pre-flight calls on the behavior of Myna birds
Creators: name: Theerasak Jaimipak
name: Somboon Kamtaeja
name: Surakan Payakkhabutra
name: Supaluck Viruhpintu
Publisher: name: Research and Development Office, Prince of Songkla University
Year: 2019
Subjects: Mynas' playback
distress calls
pre-flight calls
alarm calls
habituation

description: Songklanakarin Journal of Science and Technology, 41, 1, 222-228
title: The statistical analysis of animal populations
Creators: name: Alston, Robert David
Publisher: name: University of Kent
Year: 1996

description: This thesis is concerned with assessing the spatial variability in animal populations. Chapter 1 is a short general introduction. Chapter 2 contains a discussion of the design of a large field experiment on the effect on the local ecology of the proximity of arable crops (winter barley in this case), semi-natural habitat and mature hedgerow. The counts of the large polyphagous beetle Pterostichus Melanarius recovered from an array of wet pitfall traps from the above experiment is then discussed. New tests for overdispersion and spatial aggregation are given in chapter 3. This extends the work of (Perry and Hewitt, 1991) based on the amount of effort it takes to smooth out counts data so that they are acceptably variable (variance=0). In chapter 4 we proceed to devise indices from Chapter 3's measures so the amount of pattern in different data sets can be compared. In chapter 5 these indices are applied to the counts of P. melanarius from the experiment at Long Ashton that was discussed in chapter 2, with each month analysed separately. A generalised linear model is also fitted to the data. In chapter 6 we look at use of a general host-parasite model by Pacala et al. (1991) to fit a large group of data sets. Some problems related to parameter estimations are considered. A slightly simpler model is then described and shown to be equivalent to a generalised linear model. Finally the distribution of movement distance and survival rates from ring-recovery data on blackbirds is discussed in chapter 7.
In Silico simulation and analysis of human p53 and non-human translationally controlled tumor protein
Creators: name: Tanate Panrat
name: Hirun Saelim
name: Parvez, Imran
name: Amornrat Phongdara
Publisher: name: Research and Development Office, Prince of Songkla University
Year: 2019
Subjects: TCTP
p53
apoptosis
interaction mechanism analysis
molecular docking

description: Songklanakarin Journal of Science and Technology, 41, 1, 229-236
Optimizing ART: Radiative Transfer Forward Modeling Code for Solar Observations with ALMA
Creators: name: Krotkiewski, Marcin
Publisher: name: Zenodo
Year: 2018
Subjects: ART software
OpenMP
code
CPU
MPI

description: Various optimizations of the ART software package for the solution of the radiative transfer equation in three dimensions are discussed in this white paper. All critical path functions of the code have been optimized and vectorized using OpenMP directives. Several techniques have been used, amongst others the rearrangement of input data and internal data structures to facilitate usage of CPU vector units, vectorization of calls to the math library, explicit loop unrolling to allow vectorization of iterative loops with a convergence criterion, vectorization of data-dependent if-statements through enforced computations on all SIMD lanes and filtering of the final result. Several technical challenges had to be overcome to achieve the best performance. The OpenMPI stack needed to be compiled with a custom (non-native) Glibc library. In some cases, individual vectorized clones generated automatically by the compilers needed to be substituted with custom functions implemented manually using compiler intrinsics. Performance tests have shown that on the Broadwell architecture the optimized code works from 2.5x faster (RT solver) to 13x faster (EOS solver) on a single core. MPI implementation of the code scales with 95% efficiency on 2048 cores. Throughout the project, several GCC bugs related to automatic OpenMP vectorization have been reported, which shows that the support for the relatively new OpenMP vectorization features is still not mature. For some of those bugs effective workarounds have been developed. We also point to some shortcomings in the OpenMP simd vectorization framework and develop several new optimization techniques, which improve effectiveness of automatic code vectorization. Finally, some generally useful tutorials have been delivered.
On the Bartnik mass of two-spheres with non-negative constant mean curvature
Creators: name: Martens, Adam
Publisher: name: University of British Columbia
Year: 2021

description: We establish three new upper bounds on the Bartnik quasi-local mass of triples (S²,g,H) where S² is a topological two sphere, g is a Riemannian metric on S², and H ≥ 0 is a specified (constant) value for the initial mean curvature. We use the initial data set approach under the additional assumptions of time-symmetry (TS) and the dominant energy condition (DEC) in which one first constructs a collar with initial boundary sphere isometric to (S² g) and then extends to an asymptotically flat (AF) 3-manifold with non-negative scalar curvature (which is the DEC under the TS setting). The first bound extends the main result in [Mantoulidis-Schoen "On the Bartnik mass of apparent horizons"] to include the boundary case. Precisely, we show that any metric g with non-negative first eigenvalue of the operator -Δ_g + K_g appears as an apparent horizon (in the TS/DEC/AF setting) and that its Bartnik mass is precisely the corresponding Hawking mass. The second bound establishes that the Bartnik mass of the triple (S²,g,H) is bounded above by r/2 whenever g has non-negative Gaussian curvature K_g and H > 0. This result was known when K_g is assumed to be strictly positive (see [Miao-Xie "Bartnik mass via vacuum extensions"]) though the methods used there do not apply when min K_g =0. For the last bound, given any metric g with K_g ≥ 0 and any H > 0, we give an explicit constant C (depending only on g and H) such that the Bartnik mass of the triple (S²,g,H) is bounded above by a quantity involving C which approaches the Hawking mass as C → 0, which happens as either H → 0 or as g becomes round. Moreover, C remains bounded if H → ∞ or r² min K_g → 0. This result can be extended to arbitrary metrics (that do not necessarily satisfy K_g ≥ 0) although the resulting bound in this case is only finite if H is sufficiently large depending on g.
Thermofield Quantum Electrodynamics in 1 + 1 Dimensions at Finite Chemical Potential: A Bosonization Approach
Creators: name: Amaral, R. L. P. G.
name: Belvedere, L. V.
name: Rothe, K. D.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The recent generalization of the Lowenstein-Swieca operator solution of Quantum Electrodynamics in 1+1 dimensions to finite temperature in Thermofield Dynamics is further generalized to include a non-vanishing chemical potential. The operator solution to the Euler-Lagrange equations respecting the Kubo-Martin-Schwinger condition is constructed. Two forms of this condition and their associated solutions are discussed. The correlation functions of an arbitrary number of chiral densities are computed in the thermal theta-vacuum.
The cataclysmic variable SDSS J1507+52: An eclipsing period bouncer in the Galactic halo
Creators: name: Uthas, Helena
name: Knigge, Christian
name: Long, Knox S.
name: Patterson, Joseph
name: Thorstensen, John
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: SDSS J1507+52 is an eclipsing cataclysmic variable consisting of a cool, non-radially pulsating white dwarf and an unusually small sub-stellar secondary. The system has a high space velocity and a very short orbital period of about 67 minutes, well below the usual minimum period for CVs. To explain the existence of this peculiar system, two theories have been proposed. One suggests that SDSS J1507+52 was formed from a detached white-dwarf/brown-dwarf binary. The other theory proposes that the system is a member of the Galactic halo-population. Here, we present ultraviolet spectroscopy of SDSS J1507+52 obtained with the Hubble Space Telescope with the aim of distinguishing between these two theories. The UV flux of the system is dominated by emission from the accreting white dwarf. Fits to model stellar atmospheres yield physical parameter estimates of T(eff) = 14200 \pm 500 K, log(g)=8.2 \pm 0.3, vsin(i)=180 \pm 20 kms-1 and [Fe/H]=-1.2 \pm 0.2. These fits suggest a distance towards SDSS J1507+52 of d = 250 \pm 50 pc. The quoted uncertainties include systematic errors associated with the adopted fitting windows and interstellar reddening. Assuming that there is no contribution to the UV flux from a hot, optically thick boundary layer, we find a T(eff) much higher than previously estimated from eclipse analysis. The strongly sub-solar metallicity we infer for SDSS J1507+52 is consistent with that of halo stars at the same space velocity. We therefore conclude that SDSS J1507+52 is a member of the Galactic halo.
Davenport's method and slim exceptional sets: the asymptotic formulae in Waring's problem
Creators: name: Kawada, Koichi
name: Wooley, Trevor D.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics

description: We apply a method of Davenport to improve several estimates for slim exceptional sets associated with the asymptotic formula in Waring's problem. In particular, we show that the anticipated asymptotic formula in Waring's problem for sums of seven cubes holds for all but $O(N^{1/3+ε})$ of the natural numbers not exceeding $N$.
Resources to Support Faculty Writing Data Management Plans: Lessons Learned from an Engineering Pilot
Creators: name: Nicholls, Natsuko H
name: Samuel, Sara M
name: Lalwani, Leena N
name: Grochowski, Paul F
name: Green, Jennifer A
Publisher: name: Edinburgh University Library
Year: 2014

description: Recent years have seen a growing emphasis on the need for improved management of research data. Academic libraries have begun to articulate the conceptual foundations, roles, and responsibilities involved in data management planning and implementation. This paper provides an overview of the Engineering data support pilot at the University of Michigan Library as part of developing new data services and infrastructure. Through this pilot project, a team of librarians had an opportunity to identify areas where the library can play a role in assisting researchers with data management, and has put forth proposals for immediate steps that the library can take in this regard. The paper summarizes key findings from a faculty survey and discusses lessons learned from an analysis of data management plans from accepted NSF proposals. A key feature of this Engineering pilot project was to ensure that these study results will provide a foundation for librarians to educate and assist researchers with managing their data throughout the research lifecycle.
Representations of quantum orders
Creators: name: Panov, A. N.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Algebra (math.QA)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 81R50, 16G30

description: We study finite dimensional algebras that appear as fibers of quantum orders over a given point of variety of center. We present the formula for the number of irreducible representations and check it for it for the algebra of twisted polynomials, the quantum Weyl algebra and the algebra of regular functions on quantum group.
description: 9 pages
Optimization of soluble sugar production from pineapple peel by microwave-assisted water pretreatment
Creators: name: Sininart Chongkhong
name: Chakrit Tongurai
Publisher: name: Research and Development Office, Prince of Songkla University
Year: 2019
Subjects: pineapple peel
microwave-assisted water pretreatment
thermal treatment
fermentable sugars
soluble sugars

description: Songklanakarin Journal of Science and Technology, 41, 1, 237-245
Low redshift AGN in the Hamburg/ESO Survey: II. The active black hole mass function and the distribution function of Eddington ratios
Creators: name: Schulze, Andreas
name: Wisotzki, Lutz
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We estimated black hole masses and Eddington ratios for a well defined sample of local (z<0.3) broad line AGN from the Hamburg/ESO Survey (HES), based on the Hbeta line and standard recipes assuming virial equilibrium for the broad line region. The sample represents the low-redshift AGN population over a wide range of luminosities, from Seyfert 1 galaxies to luminous quasars. From the distribution of black hole masses we derived the active black hole mass function (BHMF) and the Eddington ratio distribution function (ERDF) in the local universe, exploiting the fact that the HES has a well-defined selection function. While the directly determined ERDF turns over around L/L_Edd ~ 0.1, similar to what has been seen in previous analyses, we argue that this is an artefact of the sample selection. We employed a maximum likelihood approach to estimate the intrinsic distribution functions of black hole masses and Eddington ratios simultaneously in an unbiased way, taking the sample selection function fully into account. The resulting ERDF is well described by a Schechter function, with evidence for a steady increase towards lower Eddington ratios, qualitatively similar to what has been found for type~2 AGN from the SDSS. Comparing our best-fit active BHMF with the mass function of inactive black holes we obtained an estimate of the fraction of active black holes, i.e. an estimate of the AGN duty cycle. The active fraction decreases strongly with increasing black hole mass. A comparison with the BHMF at higher redshifts also indicates that, at the high mass end, black holes are now in a less active stage than at earlier cosmic epochs. Our results support the notion of anti-hierarchical growth of black holes, and are consistent with a picture where the most massive black holes grew at early cosmic times, whereas at present mainly smaller mass black holes accrete at a significant rate.
description: 19 pages, 15 figures, accepted for publication in A&A
Un'orchestra a due bacchette: la co-docenza per lo sviluppo del pensiero critico e riflessivo. Itinerario didattico tra geografia e italiano sull'analisi del paesaggio
Creators: name: Gruosso, Giulia
Publisher: name: Scuola Universitaria della Svizzera Italiana (SUPSI)
Year: 2024
Subjects: co-docenza; geografia; italiano; pensiero critico e riflessivo; competenza; paesaggio

description: Il presente lavoro di ricerca intende indagare in che modo l’approccio didattico della co-docenza possa favorire lo sviluppo della competenza trasversale del pensiero critico e riflessivo. Nell’elaborato si illustrano le fasi di lavoro e le modalità didattiche messe in atto durante un percorso tra le materie Italiano e Geografia sul tema dell’analisi del paesaggio proposto ad una classe di seconda media. Il percorso ha richiesto un contributo pratico alla classe, che è stata chiamata non soltanto a descrivere il paesaggio in cui vive, ma è stata incoraggiata a prendere posizione e a ragionare direttamente su proposte di interventi di modifica urbana, in particolare riflettendo su possibili riqualificazioni o rifunzionalizzazioni di spazi del centro urbano della città di Bellinzona. Alla fine del percorso le allieve e gli allievi hanno dimostrato nella maggior parte dei casi di saper mobilitare il proprio pensiero critico e riflessivo, coinvolgendo le proprie emozioni, comprendendo punti di vista diversi e decentrandosi quindi dalla propria posizione. La presenza di due docenti e la maggiore quantità di stimoli hanno incoraggiato la classe a mobilitare maggiormente questa competenza. L’approccio trasversale e interdisciplinare ha permesso di ragionare sui propri bisogni e quelli della collettività, sulle sfide affrontate dalla nostra società e promuovere lo sviluppo di cittadini attivi e responsabili. Relatore: Marco Lupatini.
MPEC 2024-S62 : 2024 SZ
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2024
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2024 SZ

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Who benefits from the rapidly increasing Voluntary Sustainability Standards? Evidence from Fairtrade and Organic certified coffee in Ethiopia
Creators: name: Minten, Bart
name: Mekdim Dereje
name: Ermias Engeda
name: Seneshaw  Tamru
Publisher: name: Gates Open Research
Year: 2019

description: Who benefits from the rapidly increasing Voluntary Sustainability Standards? Evidence from Fairtrade and Organic certified coffee in Ethiopia
Parameter estimation biases due to contributions from the Rees-Sciama effect to the integrated Sachs-Wolfe spectrum
Creators: name: Schaefer, Bjoern Malte
name: Kalovidouris, Angelos Fotios
name: Heisenberg, Lavinia
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The subject of this paper is an investigation of the nonlinear contributions to the spectrum of the integrated Sachs-Wolfe (iSW) effect. We derive the corrections to the iSW-auto spectrum and the iSW-tracer cross-spectrum consistently to third order in perturbation theory and analyse the cumulative signal-to-noise ratio for a cross-correlation between the PLANCK and EUCLID data sets as a function of multipole order. We quantify the parameter sensitivity and the statistical error bounds on the cosmological parameters Omega_m, sigma_8, h, n_s and w from the linear iSW-effect and the systematical parameter estimation bias due to the nonlinear corrections in a Fisher-formalism, analysing the error budget in its dependence on multipole order. Our results include: (i) the spectrum of the nonlinear iSW-effect can be measured with 0.8σstatistical significance, (ii) nonlinear corrections dominate the spectrum starting from l=100, (iii) an anticorrelation of the CMB temperature with tracer density on high multipoles in the nonlinear regime, (iv) a much weaker dependence of the nonlinear effect on the dark energy model compared to the linear iSW-effect, (v) parameter estimation biases amount to less than 0.1 sigma and weaker than other systematics.
description: 9 pages, 8 figures, submitted to MNRAS
Gravitational waves from extreme mass-ratio inspirals in Dynamical Chern-Simons gravity
Creators: name: Pani, Paolo
name: Cardoso, Vitor
name: Gualtieri, Leonardo
Publisher: name: arXiv
Year: 2011
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Dynamical Chern-Simons gravity is an interesting extension of General Relativity, which finds its way in many different contexts, including string theory, cosmological settings and loop quantum gravity. In this theory, the gravitational field is coupled to a scalar field by a parity-violating term, which gives rise to characteristic signatures. Here we investigate how Chern-Simons gravity would affect the quasi-circular inspiralling of a small, stellar-mass object into a large non-rotating supermassive black hole, and the accompanying emission of gravitational and scalar waves. We find the relevant equations describing the perturbation induced by the small object, and we solve them through the use of Green's function techniques. Our results show that for a wide range of coupling parameters, the Chern-Simons coupling gives rise to an increase in total energy flux, which translates into a fewer number of gravitational-wave cycles over a certain bandwidth. For space-based gravitational-wave detectors such as LISA, this effect can be used to constrain the coupling parameter effectively.
description: RevTex4, 18 pages, 7 figures, 1 table
Coherent mixing in three and four quark generations
Creators: name: Simonov, Yu. A.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: New dynamical mechanism of quark mass generations and mixing is demonstrated in the examples of three and four generations. In the framework of the new mixing pattern, called the coherent mixing, the CKM elements are predicted compatible with experimental data for three generations, and are strongly constrained for four generations.
description: 14 pages
title: Decolonising Photographic Landscapes:
A Visual Engagement with Chilean Gardens
Creators: name: Montero Prieto, Maria, Maria
Publisher: name: Goldsmiths, University of London
Year: 2019

description: Colonial agencies have framed the view of the land, not only 
by promoting a perspective of an empty place, but also in the way in which all natural resources have been named and classified. The perception of the landscape in Chile still occurs as a mirror to that which was perceived as being in a distant land, and this perception has constrained the way people can envision, plan and experience its territory today. This research undertakes a decolonial visual inquiry into photographic landscape in Chile. By engaging specifically with an everyday landscape and the garden, this research reworks relationships between people and their perceptions in lived environments. Through this investigation I seek to interrogate how colonial views of the land have framed experience and perception of Chilean territories, from the infrastructural, to the everyday. 

Focusing on gardens as the sites to engage with decolonial approaches, this research was undertaken at two distinct locations, Puerto Varas and Iquique. I look at how gardens as landscapes are perceived, made and represented. I further work through photographic practice to develop alternative views of landscape that involves people within the places they inhabit. Working with photography as a tool to get involved at these sites, I extend Flusser’s concept of the technological apparatus by investigating photography as a process of ongoing creation. Consequently, I create a series of visual experiments which critically explore the issues emerging during this research, and allow me to create an alternative way of representing Chilean landscapes whilst reworking their form, content and circulation through an engagement with decolonial practices, theories and inhabitations.   

Consequently, this inquiry has several implications for the three main problems it addresses. Firstly, the representation of landscape (and its colonial imposition); secondly, the photographic apparatus and its relation to textural descriptions and the metadata; and, finally, decolonial experimentation as a process of practical engagement.
ViralZone: recent updates to the virus knowledge resource
Creators: name: Mercier, Philippe Le
name: Castro, Edouard De
name: Masson, Patrick
name: Hulo, Chantal
name: Bridge, Alan
Publisher: name: F1000 Research Limited
Year: 2019

description: ViralZone (viralzone.expasy.org) is a web resource that links virus sequence data with biological knowledge. In 2018, 80 new fact sheets were created to comply with the addition of new genera/families by the International Committee on Taxonomy of Viruses ICTV. Other recent developments in ViralZone include the addition of data on host receptors for viral entry into target cells, including 260 host-virus interactions. Human viral receptors (attachment or entry receptors) comprise 56 human proteins and 12 kinds of carbohydrates targeted by 58 different viruses
Beyond the consensus: dissecting within-host viral population diversity of foot-and-mouth disease virus using next-generation genome sequencing
Creators: name: Morelli, Marco J.
name: Wright, Caroline F.
name: Thébaud, Gaël
name: Knowles, Nick J.
name: Herzyk, Pawel
name: Paton, David J.
name: Haydon, Daniel T.
name: King, Donald P.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Genomics (q-bio.GN)
subject: FOS: Biological sciences

description: The sequence diversity of viral populations within individual hosts is the starting material for selection and subsequent evolution of RNA viruses such as foot-and-mouth disease virus (FMDV). Using next-generation sequencing (NGS) performed on a Genome Analyzer platform (Illumina), this study compared the viral populations within two bovine epithelial samples (foot lesions) from a single animal with the Inoculum used to initiate experimental infection. Genomic sequences were determined in duplicate sequencing runs, and the consensus sequence determined by NGS, for the Inoculum, was identical to that previously determined using the Sanger method. However, NGS reveals the fine polymorphic sub-structure of the viral population, from nucleotide variants present at just below 50% frequency to those present at fractions of 1%. Some of the higher frequency polymorphisms identified encoded changes within codons associated with heparan sulphate binding and were present in both feet lesions revealing intermediate stages in the evolution of a tissue-culture adapted virus replicating within a mammalian host. We identified 2,622, 1,434 and 1,703 polymorphisms in the Inoculum, and in the two foot lesions respectively: most of the substitutions occurred only in a small fraction of the population and represent the progeny from recent cellular replication prior to onset of any selective pressures. We estimated an upper limit for the genome-wide mutation rate of the virus within a cell to be 7.8 x 10-4 per nt. The greater depth of detection, achieved by NGS, demonstrates that this method is a powerful and valuable tool for the dissection of FMDV populations within-hosts.
Ca' Rossa (Grono), Casa di Moda
Creators: name: Filippi, Lisa
Publisher: name: Scuola Universitaria della Svizzera Italiana (SUPSI)
Year: 2018

description: Rivalutare la Cà Rossa proponendo una nuova funzione; l’atelier di moda Trussardi. Il progetto volge a valorizzare la sua architettura con interventi puntuali nel rispetto del carattere storico dell’edificio. Le proposte rispondono alle nuove esigenze funzionali con la messa a norma dei servizi igienico-sanitari, l’introduzione di un ascensore e la riorganizzazione degli spazi interni. L’architettura interna è stata in parte risanata e rivalorizzata con la sostituzione di alcuni pavimenti e la posa di una boiserie. L’inserimento di un mobilio progettato su misura risponde alle puntuali esigenze programmatiche dell’atelier nel rispetto dell’atmosfera degli ambienti valorizzandone i suoi caratteri.
The general behavior of $NLO$ unintegrated parton distributions based on the single-scale evolution and the angular ordering constraint
Creators: name: Hosseinkhani, H
name: Modarres, M
Publisher: name: arXiv
Year: 2010
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: To overcome the complexity of generalized two hard scale ($k_t$,$μ$) evolution equation, well known as the $Ciafaloni$, $Catani$, $Fiorani$ and $Marchsini$ ($CCFM$) evolution equations, and calculate the unintegrated parton distribution functions ($UPDF$), $Kimber$, $Martin$ and $Ryskin$ ($KMR$) proposed a procedure based on ($i$) the inclusion of single-scale ($μ$) only at the last step of evolution and ($ii$) the angular ordering constraint ($AOC$) on the $DGLAP$ terms (the $DGLAP$ collinear approximation), to bring the second scale, $k_t$ into the $UPDF$ evolution equations. In this work we intend to use the $MSTW 2008$ (Martin et al) parton distribution functions (PDF) and try to calculate $UPDF$ for various values of $x$ (the longitudinal fraction of parton momentum), $μ$ (the probe scale) and $k_t$ (the parton transverse momentum) to see the general behavior of three dimensional $UPDF$ at the $NLO$ level up to the $LHC$ working energy scales ($μ^2)$. It is shown that there exits some pronounced peaks for the three dimensional $UPDF$ $(f_a(x,k_t))$ with respect to the two variables $x$ and $k_t$ at various energies ($μ$). These peaks get larger and move to larger values of $k_t$, as the energy ($μ$) is increased. We hope these peaks could be detected in the $LHC$ experiments at $CERN$ and other laboratories in the less exclusive processes.
SHAPE Project AXESSIM - CINES Partnership: HPC for connected Objects
Creators: name: B. Cirou
name: C. Girard
name: B. Weber
name: V. Cameo Ponz
Publisher: name: Zenodo
Year: 2018
Subjects: AxesSim
TETA
simulation
GPU
DGTD
PizDaint

description: AxesSim has developed an electromagnetic simulation tool named TETA, which is optimized for harnessing several GPUs in parallel. It is based on the Discontinuous Galerkin method in the Time Domain (DGTD). This method allows to handle meshes of complex geometries and can model designs with high precision such as a full human body with its organs, clothes and surrounding environment. The targeted architecture is a CRAY XC50 (PizDaint) which is a supercomputer with Intel Broadwell CPUs and NVidia P100 GPUs. Both CPU and GPU are addressed via the OpenCL library. MPI is used for communication between accelerators and hosts.
Evaluating feature selection techniques for identifying a microbial signature in 16S microbiome sequencing data
Creators: name: Nguyen, Thuy Tien
Publisher: name: University of British Columbia
Year: 2021

description: The goal of understanding which microbes are responsible for shifts in different environmental and clinical conditions has motivated the increase in the development of custom feature selection techniques for microbiome data. When identifying an appropriate feature selection method, researchers are often faced with the question of whether or not to apply a phylogenetic approach. However, in many cases, it is not possible to know which is most suitable a priori. The motivation behind a phylogenetic approach is biological, as the features in microbiome data embodies an inherent hierarchical structure that may contain signal from trait conservation. Microbiome shifts correlated with host outcome could be driven by groups of taxa which are closely phylogenetically related. As such, techniques that leverage phylogenetic information seem highly fitting. Recent studies have shown promising results that a phylogenetic approach could be beneficial, however less have sought to provide a thorough evaluation of the robustness and applicability of the phylogenetic approach for different host outcomes of study. Guidance for researchers on the applicability of a phylogenetic approach is unclear in the current state of the literature. In this work, we sought to perform an assessment of feature selection methods in order to understand how different classes of methods compete on microbiome data. We sought to evaluate whether a phylogenetic approach would be more powerful in finding ground-truth features with phylogenetic correlation structures, leading us to discover that non-phylogenetic methods are the best all-around methods both in the presence and absence of strong phylogenetic signal. Some evidence has shown that there is still merit in the phylogenetic approach — such as in scenarios where the phylogenetic signal is very strong. Our observations and findings provide insights into strategies for testing for a phylogenetic signal using a combination of techniques.
Astronomy Librarians - Quo Vadis?
Creators: name: Lagerstrom, Jill
name: Grothkopf, Uta
Publisher: name: arXiv
Year: 2011
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Digital Libraries (cs.DL)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: "You don't look like a librarian" is a phrase we often hear in the astronomy department or observatory library. Astronomy librarians are a breed apart, and are taking on new and non-traditional roles as information technology evolves. This talk will explore the future of librarians and librarianship through the lens of the recent talks given at the sixth "Libraries and Information Services in Astronomy" conference held in Pune, India in February 2010. We will explore the librarian's universe, illustrating how librarians use new technologies to perform such tasks as bibliometrics, how we are re-fashioning our library spaces in an increasingly digital world and how we are confronting the brave new world of open access, to name but a few topics.
description: To appear in: Future Professional Communication in Astronomy II (FPCA-II)
title: Ð¡Ð¸ÑÑÐµÐ¼Ð° Ð³Ð¸Ð´ÑÐ¾Ð·Ð°ÑÐ²Ð¾ÑÐ¾Ð² Ñ ÑÐ»ÐµÐºÑÑÐ¾Ð¼ÐµÑ Ð°Ð½Ð¸ÑÐµÑÐºÐ¸Ð¼ Ð¿ÑÐ¸Ð²Ð¾Ð´Ð¾Ð¼
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ°
titleType: Subtitle
title: Hydraulic gate system with electromechanical drive
Creators: name: Ð¡ÑÐµÐ¿Ð°Ð½Ð¾Ð², ÐÑÑÐµÐ¼
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2023
Subjects: Ð¶ÐµÑÑÐºÐ¾ÑÑÑ
Ð¼ÐµÑ Ð°Ð½Ð¸Ð·Ð¼ Ð¿Ð¾Ð´ÑÐµÐ¼Ð°
Ð¼Ð¾Ð¼ÐµÐ½Ñ
Ð½Ð°Ð³ÑÑÐ·ÐºÐ°
Ð½Ð°Ð¿ÑÑÐ¶ÐµÐ½Ð¸Ðµ
Ð¿Ð»Ð¾ÑÐºÐ¸Ð¹ Ð·Ð°ÑÐ²Ð¾Ñ
Ð¿ÑÐ¾ÑÐ½Ð¾ÑÑÑ
ÑÐµÐ³Ð¼ÐµÐ½ÑÐ½ÑÐ¹ Ð·Ð°ÑÐ²Ð¾Ñ
stiffness
lifting mechanism
torque
load
stress
flat gate
durability
segmental gate

description: ÐÐ°Ð½Ð½Ð°Ñ Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð¿Ð¾ÑÐ²ÑÑÐµÐ½Ð° Ð²Ð¾Ð¿ÑÐ¾ÑÐ°Ð¼ Ð¿ÑÐ¾ÐµÐºÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ: ÑÐµÐ³Ð¼ÐµÐ½ÑÐ½Ð¾Ð³Ð¾ Ð·Ð°ÑÐ²Ð¾ÑÐ° Ñ Ð¿ÑÐ¸Ð¼ÐµÐ½ÐµÐ½Ð¸ÐµÐ¼ Ð°Ð½Ð°Ð»Ð¸ÑÐ¸ÑÐµÑÐºÐ¾Ð³Ð¾ Ð¼ÐµÑÐ¾Ð´Ð° Ð¸ Ð¼ÐµÑÐ¾Ð´Ð° ÐºÐ¾Ð½ÐµÑÐ½ÑÑ ÑÐ»ÐµÐ¼ÐµÐ½ÑÐ¾Ð² Ñ Ð¿Ð¾ÑÐ»ÐµÐ´ÑÑÑÐ¸Ð¼ ÑÑÐ°Ð²Ð½ÐµÐ½Ð¸ÐµÐ¼ ÑÐµÐ·ÑÐ»ÑÑÐ°ÑÐ¾Ð²; Ð¼ÐµÑÐ°Ð½Ð¸Ð·Ð¼Ð¾Ð² Ð¿Ð¾Ð´ÑÐµÐ¼Ð° Ð´Ð»Ñ ÑÐµÐ³Ð¼ÐµÐ½ÑÐ½Ð¾Ð³Ð¾ Ð¸ Ð¿Ð»Ð¾ÑÐºÐ¾Ð³Ð¾ Ð·Ð°ÑÐ²Ð¾ÑÐ¾Ð².
description: This final qualifying work is devoted to the design: of a segmental gate using the analytical method and the finite element method, followed by a comparison of the results; lifting mechanisms for segmental and flat gates.
New York Times Upshot/Siena College: October 2018 Colorado 06 Poll
Creators: name: New York Times
Publisher: name: Roper Center for Public Opinion Research
Year: 2021

description: Likelihood of voting in 2018 election (2); Colorado Congressional District 06 (1); Democratic candidate Jason Crow (1); Republican candidate Mike Coffman (1); vote for Democrat/Republican for Congress (1); opinion of various public figures (2); respondent would like Democrats/Republicans to control House of Representatives (1); President Donald Trump job performance (1); political partisanship (1).
Additional file 1 of Emergency department visits and trends related to cocaine, psychostimulants, and opioids in the United States, 2008–2018
Creators: name: Suen, Leslie W.
name: Davy-Mendez, Thibaut
name: LeSaint, Kathy T.
name: Riley, Elise D.
name: Coffin, Phillip O.
Publisher: name: figshare
Year: 2022
Subjects: subject: Medicine
subject: Molecular Biology
subject: Neuroscience
subject: Pharmacology
subject: Biotechnology
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences
subject: Computational Biology

description: Additional file 1.
Atomic and molecular phases through attosecond streaking
Creators: name: Baggesen, Jan Conrad
name: Madsen, Lars Bojer
Publisher: name: arXiv
Year: 2010
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: In attosecond streaking, an electron is released by a short xuv pulse into a strong near infrared laser field. When the laser coupling between two states in the target is weak relative to the detuning, the streaking technique, which allows for a complete determination of the driving field, also gives an accurate measurement of the relative phase of the atomic or molecular ionization matrix elements from the two states through the interference from the two channels. The interference may change the phase of the photoelectron streaking signal within the envelope of the ir field, an effect to be accounted for when reconstructing short pulses from the photoelectron signal and in attosecond time-resolved measurements.
description: 5 pages, 5 figures
Impact of gas flow on dielectric barrier discharge for air purification
Creators: name: Mahdavipour, Bahram
name: Zaplotnik, Rok
name: Panjan, Matjaž
name: Oberrath, Jens
name: Dahle, Sebastian
Publisher: name: Zenodo
Year: 2019
Subjects: dielectric barrier discharge
air purification

description: The dataset relates to the conference contribution submitted to the International Symposium on Plasma Chemistry 24 in Naples, 2019.

Abstract: We investigated the effect of airflow on a dielectric barrier discharge (DBD) plasma via electrical measurements, optical emission spectroscopy and fast video analysis. Using microsecond pulses yielded significant differences from sinusoidal high voltage excitation. Observations confirmed immanent changes in discharge appearance and homogeneity, but also in reduced electric field strength, peak voltages and transferred power.
description: This project has received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement No 745936.
Further, the research received support by the Slovenian Research Agency (project J2-7238 and P2-0082).
The authors gratefully acknowledge the travel funds provided by the German Academic Exchange Service, as well as the provision of equipment by the group of Prof. Maus-Friedrichs at Clausthal University of Technology.
New York Times Upshot/Siena College: October 2018 New Jersey 11 Poll
Creators: name: New York Times
Publisher: name: Roper Center for Public Opinion Research
Year: 2021

description: Likelihood of voting in 2018 election (2); New Jersey Congressional District 11 (1); Democratic candidate Mikie Sherrill (1); Republican candidate Jay Webber (1); vote for Democrat/Republican for Congress (1); opinion of various public figures (2); respondent would like Democrats/Republicans to control House of Representatives (1); President Donald Trump job performance (1); political partisanship (1).