cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Spirals, shadows & precession in HD 100453 -- I. The orbit of the binary
Creators: name: Gonzalez, Jean-François
name: van der Plas, Gerrit
name: Pinte, Christophe
name: Cuello, Nicolás
name: Nealon, Rebecca
name: Ménard, François
name: Revol, Alexandre
name: Rodet, Laetitia
name: Langlois, Maud
name: Maire, Anne-Lise
Publisher: name: arXiv
Year: 2020
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: In recent years, several protoplanetary discs have been observed to exhibit spirals, both in scattered light and (sub)millimetre continuum data. The HD 100453 binary star system hosts such a disc around its primary. Previous work has argued that the spirals were caused by the gravitational interaction of the secondary, which was assumed to be on a circular orbit, coplanar with the disc (meaning here the large outer disc, as opposed to the very small inner disc). However, recent observations of the CO gas emission were found incompatible with this assumption. In this paper, we run SPH simulations of the gas and dust disc for seven orbital configurations taken from astrometric fits and compute synthetic observations from their results. Comparing to high-resolution ALMA $^{12}$CO data, we find that the best agreement is obtained for an orbit with eccentricity $e=0.32$ and semi-major axis $a=207$ au, inclined by $61^\circ$ relative to the disc plane. The large misalignment between the disc and orbit planes is compatible with the tidal evolution of a circumprimary disc in an eccentric, unequal-mass binary star.
description: Accepted for publication in MNRAS. 21 pages, 28 figures
Workshop day 5: Discussion of the people of Xahslin-ding
Creators: name: Parker, Verdena
name: Ammon, Danny
name: Begay, Kayla
name: George-Moore, Melodie
name: Jackson, Silis
name: Newbold, Lindsey
name: Spence, Justin
name: Lincoln, Perry
name: Parker, Otis
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2022
Subjects: subject: hup

description: Audio files VP-260711-01 and VP-260711-03: Discussion of Verdena's grandfather's family and the people of Xahslin-ding, in Hupa and English (VP-260711-01), with follow-up discussion in English (VP-260711-03). A file VP-260711-02 contained only a few seconds of noise and was subsequently deleted, leading to the gap in the numbering sequence (VP-260711-01 to VP-260711-03). Recorded in a classroom at Captain John High School as part of a language workshop in Hoopa Valley. The participants identified here were present at most sessions during the workshop; additional people were also present, some of whom participate in the conversation.
The QCD vacuum probed by overlap fermions
Creators: name: Weinberg, V.
name: Ilgenfritz, E. -M.
name: Koller, K.
name: Koma, Y.
name: Schierholz, G.
name: Streuer, T.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We summarize different uses of the eigenmodes of the Neuberger overlap operator for the analysis of the QCD vacuum, here applied to quenched configurations simulated by means of the Luescher-Weisz action. We describe the localization and chiral properties of the lowest modes. The overlap-based topological charge density (with and without UV-filtering) is compared with the results of UV-filtering for the field strength tensor. The latter allows to identify domains of good (anti-)selfduality. All these techniques together lead to a dual picture of the vacuum, unifying the infrared instanton picture with the presence of singular defects co-existent at different scales.
description: 7 pages, 4 figures, talk presented at the XXIVth International Symposium on Lattice Field Theory, 23-28 July 2006, Tucson, Arizona, USA
APPLICATION OF ARTIFICIAL INTELLIGENCE TECHNOLOGIES IN HISTORY EDUCATION
Creators: name: Djalilova, Zarnigor
Publisher: name: Zenodo
Year: 2024

description: The article discusses the possibilities of using artificial intelligence technologies in training future historians. As you know, the most popular artificial intelligence chatbot currently is the ChatGPT application. Unfortunately, access to this service for users from Russia and Belarus is currently limited. However, there are many third-party applications free from such restrictions that use the ChatGPT API and solve similar problems. The article analyzes three of the most interesting and useful of these services: Phind.com - a search engine for researchers, Talkai.info - a service that provides access to ChatGPT in Russian, Explainlikeimfive.io - an application that explains complex concepts and concepts. Examples are given of the use of the above services in planning, organizing and conducting the educational process at the faculty that trains historians.
An unexpected high concentration for the dark substructure in the gravitational lens SDSSJ0946+1006
Creators: name: Minor, Quinn E.
name: Gad-Nasr, Sophia
name: Kaplinghat, Manoj
name: Vegetti, Simona
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The presence of an invisible substructure has previously been detected in the gravitational lens galaxy SDSSJ0946+1006 through its perturbation of the lensed images. Using flexible models for the main halo and the subhalo perturbation to fit the lensed images, we demonstrate that the subhalo has an extraordinarily high central density and steep density slope. The inferred concentration for the subhalo is well above the expected scatter in concentrations for $Λ$CDM halos of similar mass. We robustly infer the subhalo's projected mass within 1 kpc to be $\sim 2$-$3.7\times 10^9$M$_\odot$ at $>$95% CL for all our lens models, while the average slope of the subhalo's projected density profile over the radial range 0.75-1.25 kpc is constrained to be steeper than isothermal ($γ_{2D} \lesssim -1$). By modeling the subhalo light directly, we infer a conservative upper bound on its luminosity $L_V < 1.2\times 10^8L_\odot$ at 95% CL, which shows that the perturber is dark matter dominated. To compare to $Λ$CDM expectations, we analyze subhalos within analogues of lensing galaxies in the Illustris TNG100-1 simulation over many lines of sight, and find hundreds of subhalos that achieve a projected mass within 1 kpc of $\gtrsim 2\times10^9M_\odot$. However, less than 1% of the mock observations yield a log-slope steep enough to be consistent with our lensing models, and they $all$ have stellar masses in excess of that allowed by observations by about an order of magnitude or more. We conclude that the presence of such a dark, highly concentrated subhalo is unexpected in a $Λ$CDM universe. Finally, we show that this tension with CDM is not significantly reduced if the perturber is assumed to be a line-of-sight structure, rather than a subhalo.
description: 24 pages, 18 figures, 3 appendices
Effects of Coach Class on Student Achievement
Creators: name: Hawks, Scott
Publisher: name: Maryland Shared Open Access Repository
Year: 2014
Subjects: subject: Coach class
subject: Tutor
subject: Math
subject: Secondary
subject: Achievement
subject: Education -- Research papers (Graduate)

description: The purpose of this study was to determine if attending coach class would have an impact on high school Algebra 1 students’ achievement. The students’ grades from second and third quarters were used as the measurement of achievement. The coach classes took place during the duration of the third quarter. Coach classes were available to students before or after school. At the conclusion of the third quarter, the students’ second and third quarter grades were compared, and it was found that attending the coach class showed no significant impact on the students’ achievements. More research about using coach class to impact student achievement is needed.
Absolute dimensions of eclipsing binaries. XXIV. The Be star system DW Carinae, a member of the open cluster Collinder 228
Creators: name: Southworth, John
name: Clausen, J. V.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: DW Carinae is a close but detached early B-type eclipsing binary in the young open cluster Cr 228. We have measured accurate physical properties of its components (masses and radii to 1%) and used these to derive the age, metallicity and distance of Cr 228. The rotational velocities of both components of DW Car are high, so we have investigated the performance of double-Gaussian fitting, one- and two-dimensional cross-correlation and spectral disentangling for measuring radial velocities in the presence of strong line blending. Gaussian and cross-correlation analyses require substantial corrections for the effects of line blending, which are only partially successful for cross-correlation. Disentangling is to be preferred because it does not assume anything about the shapes of spectral lines, and is not significantly affected by blending. Complete Stromgren uvby light curves have been obtained and accurate radii have been measured from them using the Wilson-Devinney program, constrained by an accurate spectroscopic light ratio. The Teffs and reddening have been found from Stromgren photometric calibrations. The masses and radii of DW Car are M_A = 11.34 +/- 0.12 Msun, R_A = 4.558 +/- 0.045 Rsun, M_B = 10.63 +/- 0.14 Msun and R_B = 4.297 +/- 0.055 Rsun. The Teffs are Teff_A = 27900 +/- 1000 K and Teff_B = 26500 +/- 1000 K, and the reddening is E(b-y) = 0.18 +/- 0.02 mag. Using empirical bolometric corrections we find a distance modulus of 12.24 +/- 0.12 mag for DW Car, which is in agreement with, and more accurate than, literature values for Cr 228. A comparison between the properties of DW Car and theoretical predictions is undertaken in the mass--radius and mass--Teff diagrams. Good agreement is found for an age of about 6 Myr and a metal abundance of Z approx 0.01 (abridged).
description: 19 pages, 9 figures, accepted for publication by A&A
Bethe-Salpeter equation with cross-ladder kernel in Minkowski and Euclidean spaces
Creators: name: Karmanov, V. A.
name: Carbonell, J.
name: Mangin-Brinet, M.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Some results obtained by a new method for solving the Bethe-Salpeter equation are presented. The method is valid for any kernel given by irreducible Feynman graphs. The Bethe-Salpeter amplitude, both in Minkowski and in Euclidean spaces, and the binding energy for ladder + cross-ladder kernel are found. We calculate also the corresponding electromagnetic form factor.
description: 4 pages, 3 figures. Contribution to the proceedings of the 18th International IUPAP Conference on Few-Body Problems in Physics (FB18), Santos, Brasil, August 21-26, 2006. To be published in Nucl. Phys. A
Spirals, shadows & precession in HD 100453 -- II. The hidden companion
Creators: name: Nealon, Rebecca
name: Cuello, Nicolás
name: Gonzalez, Jean-François
name: van der Plas, Gerrit
name: Pinte, Christophe
name: Alexander, Richard
name: Ménard, François
name: Price, Daniel J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The protoplanetary disc HD 100453 exhibits a curious combination of spirals, shadows and a relative misalignment between the observed outer disc and inferred inner disc. This disc is accompanied by a secondary star on a bound orbit exterior to the disc. Recent observations have suggested there may be an additional low-mass companion residing within the disc inner cavity. In our companion paper the orbit of the secondary was shown to be misaligned by 61 degrees to the plane of the outer disc. Here we investigate the properties of the inner companion and the origin of the misalignment between the inner and outer disc. Using numerical simulations and synthetic observations, we show that the disc structure and kinematics are consistent with a $\lesssim$ 5 Jupiter mass planet located at 15-20au. We find that the disc evolution over around 50 binary orbits (about 10$^5$ yrs) is governed by differential precession and to a lesser extent, the Kozai-Lidov effect. In our proposed model the misalignment observed between the outer and inner disc arises naturally as a result of the misaligned outer companion driving the outer disc to precess more rapidly than the inner disc.
description: Accepted for publication in MNRAS, 12 pages, 6 figures. Movie of simulations available at https://youtu.be/MvH8TO21W_4
Electronic and optical properties of electromigrated molecular junctions
Creators: name: Ward, D. R.
name: Scott, G. D.
name: Keane, Z. K.
name: Halas, N. J.
name: Natelson, D.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Electromigrated nanoscale junctions have proven very useful for studying electronic transport at the single-molecule scale. However, confirming that conduction is through precisely the molecule of interest and not some contaminant or metal nanoparticle has remained a persistent challenge, typically requiring a statistical analysis of many devices. We review how transport mechanisms in both purely electronic and optical measurements can be used to infer information about the nanoscale junction configuration. The electronic response to optical excitation is particularly revealing. We briefly discuss surface-enhanced Raman spectroscopy on such junctions, and present new results showing that currents due to optical rectification can provide a means of estimating the local electric field at the junction due to illumination.
description: 19 pages, 8 figures, invited paper for forthcoming special issue of Journal of Physics: Condensed Matter. For other related papers, see http://www.ruf.rice.edu/~natelson/publications.html
Determining rigid body motion from accelerometer data through the square-root of a negative semi-definite tensor, with applications in mild traumatic brain injury
Creators: name: Wan, Yang
name: Fawzi, Alice Lux
name: Kesari, Haneesh
Publisher: name: arXiv
Year: 2021
Subjects: subject: Medical Physics (physics.med-ph)
subject: Numerical Analysis (math.NA)
subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: Mild Traumatic Brain Injuries (mTBI) are caused by violent head motions or impacts. Most mTBI prevention strategies explicitly or implicitly rely on a "brain injury criterion". A brain injury criterion takes some descriptor of the head's motion as input and yields a prediction for that motion's potential for causing mTBI as the output. The inputs are descriptors of the head's motion that are usually synthesized from accelerometer and gyroscope data. In the context of brain injury criterion the head is modeled as a rigid body. We present an algorithm for determining the complete motion of the head using data from only four head mounted tri-axial accelerometers. In contrast to inertial measurement unit based algorithms for determining rigid body motion the presented algorithm does not depend on data from gyroscopes; which consume much more power than accelerometers. Several algorithms that also make use of data from only accelerometers already exist. However, those algorithms, except for the recently presented AO-algorithm [Rahaman MM, Fang W, Fawzi AL, Wan Y, Kesari H (2020): J Mech Phys Solids 104014], give the rigid body's acceleration field in terms of the body frame, which in general is unknown. Compared to the AO-algorithm the presented algorithm is much more insensitive to bias type errors, such as those that arise from inaccurate measurement of sensor positions and orientations.
description: 30 pages, 9 figures
Inferring the concentration of dark matter subhalos perturbing strongly lensed images
Creators: name: Minor, Quinn E.
name: Kaplinghat, Manoj
name: Chan, Tony H.
name: Simon, Emily
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We demonstrate that the perturbations of strongly lensed images by low-mass dark matter subhalos are significantly impacted by the concentration of the perturbing subhalo. For subhalo concentrations expected in $Λ$CDM, significant constraints on the concentration can be obtained at HST resolution for subhalos with masses larger than about $10^{10}M_\odot$. Constraints are also possible for lower mass subhalos, if their concentrations are higher than the expected scatter in CDM. We also find that the concentration of lower mass perturbers down to $\sim 10^8M_\odot$ can be well-constrained with a resolution of $\sim 0.01''$, which is achievable with long-baseline interferometry. Subhalo concentration also plays a critical role in the detectability of a perturbation, such that only high concentration perturbers with mass $\lesssim 10^9M_\odot$ are likely to be detected at HST resolution. If scatter in the $Λ$CDM mass-concentration relation is not accounted for during lens modeling, the inferred subhalo mass can be biased by up to a factor of 3(6) for subhalos of mass $10^9 M_\odot$($10^{10} M_\odot$); this bias can be eliminated if one varies both mass and concentration during lens fitting. Alternatively, one may robustly infer the projected mass within the subhalo's perturbation radius, defined by its distance to the critical curve of the lens being perturbed. With a sufficient number of detections, these strategies will make it possible to constrain the halo mass-concentration relation at low masses in addition to the mass function, offering a probe of dark matter physics as well as the small-scale primordial power spectrum.
description: 14 pages, 11 figures
Platyophrya macrostoma Foissner 1980
Creators: name: Durán-Ramírez, Carlos Alberto
name: Dias, Roberto Júnio Pedroso
name: Estrada, Rosaura Mayén-
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Chromista
Ciliophora
Colpodea
Cyrtolophosidida
Platyophryidae
Platyophrya
Platyophrya macrostoma

description: Platyophrya macrostoma Foissner, 1980
Distribution. VENEZUELA: North border of the Henri Pittier National Park, surroundings of the village of Choroni (Foissner 2016), (Ts).
description: Published as part of Durán-Ramírez, Carlos Alberto, Dias, Roberto Júnio Pedroso & Estrada, Rosaura Mayén-, 2020, Checklist of ciliates (Alveolata: Ciliophora) that inhabit in bromeliads from the Neotropical Region, pp. 1-36 in Zootaxa 4895 (1) on page 26, DOI: 10.11646/zootaxa.4895.1.1, http://zenodo.org/record/4321437
The Effect a Learning Reflection Journal has on the Quality of Second Grade Independent Writing Seatwork
Creators: name: Haberkam, Megan K.
Publisher: name: Maryland Shared Open Access Repository
Year: 2014
Subjects: subject: Independent work
subject: Primary aged
subject: Self-regulated learning
subject: Learning reflection journal
subject: Education -- Research papers (Graduate)

description: The purpose of this study was to determine the effect a learning reflection journal would have on second grade students’ independent written seatwork. The measurement tool was a writing rubric that was created by the researcher. This study involved the use of non-independent sample t-test to compare the data collected from the prettest and posttest scores on the writing assignment. The quality of independent writing assignments increased significantly after participants had made use of the learning reflection journal. This study included 22 participants, which included 17 girls and 5 boys. The mean posttest writing score (Mean =24.91, SD= 6.43) was significantly higher than the mean pretest writing score (Mean = 14.82, 5.12) [t(21) = 15.19, p < .001]. This study supports similar findings regarding learning reflection tools.
Identificando a regeneração natural de árvores amazônicas
Creators: name: Al Tareireh, Yasmin Harbi Qasem Easa
name: da Cruz Vasconcelos, Caroline
name: Costa, Daniel da Silva
name: Ferraz, Isolde Dorothea Kossmann
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 310411
subject: Plant and fungus systematics and taxonomy

description: INTRODUÇÃO: A identificação botânica é crucial, mas desafiadora em regiões altamente diversas e pouco amostradas como a Amazônia, resultando em incertezas taxonômicas. Nesse sentido, o reconhecimento de espécies arbóreas a partir de suas plântulas se torna cada vez mais necessário em estudos botânicos e ecológicos. OBJETIVO: Descrever e ilustrar a morfologia de plântulas em comparação com adultos de seis espécies arbóreas da Amazônia Central, facilitando seu reconhecimento. MATERIAL E MÉTODOS: Frutos maduros foram coletados na Reserva Florestal Ducke e na ARIE-PDBFF, herborizados e depositados no Herbário INPA. Sementes foram semeadas em bandejas com vermiculita e avaliadas semanalmente. A germinação foi definida pela emissão da parte aérea e a plântula pela expansão da(s) primeira(s) folha(s). Dez plântulas de cada espécie foram descritas morfologicamente e medidas com paquímetro digital e régua graduada. RESULTADOS: Terminalia corrugata (Combretaceae): fanero-epígea-foliácea; cotilédones orbiculares a reniformes; epicótilo pubescente; primeiras folhas simples, elípticas, com venação broquidódroma; adultos têm folhas mais coriáceas. Dipteryx odorata (Fabaceae): fanero-epígea-reserva; cotilédones elípticos; epicótilo áspero; primeiras folhas compostas paripinadas, com folíolos lanceolados e venação eucampdódroma; adultos têm folíolos oblongos. Sorocea guilleminiana (Moraceae): fanero-hipógea-reserva; cotilédones desiguais e rudimentares; primeiras folhas simples, opostas, com látex branco; adultos têm folhas espiraladas. Chromolucuma flavilatex (Sapotaceae): cripto-hipógea-reserva; cotilédones peciolados e rugosos; epicótilo velutinoso; primeiras folhas simples, elípticas, com látex amarelado; estípulas presentes; adultos têm folhas obelípticas. Manilkara bidentata (Sapotaceae): fanero-epígea-foliácea; cotilédones ovados; epicótilo pubescente; primeiras folhas simples, alternas, obovadas, com látex branco; adultos têm folhas maiores. Sarcaulus brasiliensis (Sapotaceae): cripto-hipógea-reserva; cotilédones peciolados; epicótilo marrom-avermelhado; primeiras folhas simples, subopostas, elípticas, com látex branco; adultos têm folhas obelípticas. CONCLUSÃO: Descrevemos plântulas de seis espécies das famílias Combretaceae, Fabaceae, Moraceae e Sapotaceae, cujas características morfológicas auxiliam no reconhecimento em campo e beneficiam viveiristas, produtores, conservacionistas, restauradores florestais, pesquisadores e fiscais agropecuários.
The mass-metallicity relation of interacting galaxies
Creators: name: Michel-Dansac, L.
name: Lambas, D. G.
name: Alonso, M. S.
name: Tissera, P.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We study the mass-metallicity relation of galaxies in pairs and in isolation taken from the SDSS-DR4 using the stellar masses and oxygen abundances derived by Tremonti et al. (2004). Close galaxy pairs, defined by projected separation r_p < 25kpc/h and radial velocity Delta_V < 350 km/s, are morphologically classified according to the strength of the interaction signs. We find that only for pairs showing signs of strong interactions, the mass-metallicity relation differs significantly from that of galaxies in isolation. In such pairs, the mean gas-phase oxygen abundances of galaxies with low stellar masses (Mstar ~< 10^9 Msun/h) exhibit an excess of 0.2 dex. Conversely, at larger masses (Mstar >~ 10^10 Msun/h) galaxies have a systematically lower metallicity, although with a smaller difference (-0.05 dex). Similar trends are obtained if g-band magnitudes are used instead of stellar masses. In minor interactions, we find that the less massive member is systematically enriched, while a galaxy in interaction with a comparable stellar mass companion shows a metallicity decrement with respect to galaxies in isolation. We argue that metal-rich starbursts triggered by a more massive component, and inflows of low metallicity gas induced by comparable or less massive companion galaxies, provide a natural scenario to explain our findings.
description: Accepted for publication in MNRAS Letters
2001 Traffic Safety Issues Opinion Survey
Creators: name: Agent, Kenneth R.
name: Pigman, Jerry G.
name: Langley, Ronald E.
Publisher: name: Kentucky Transportation Center, University of Kentucky
Year: 2002
Subjects: subject: Transportation Engineering

description: As a means of determining public opinion on specific traffic safety issues, a public opinion survey was conducted. A total of 4,500 mail surveys were sent to a stratified sample of drivers selected from the drivers license file. The state was divided into three regions (based on Area Development District) to determine if opinions varied by region of the state. There were 2,097 responses received for a response rate of about 51.5 percent for eligible surveys. The margin-of-error for a sample of this size is plus or minus 2.1 percent at the 95 percent confidence level.  The most support was for legislation which would regulate training at commercial truck driving schools and would require the state to administer all tests for a truck driver to obtain a commercial drivers license. There was also strong support for designating funds to be used for high school driver education, requiring motorcyclists to wear a helmet, retesting high risk drivers, various changes to the graduated driver licensing procedure, prohibiting riding in the bed of a pickup on public roads, and prohibiting the use of cell phones while driving.
The continuum description with pseudo-state wave functions
Creators: name: Moro, A. M.
name: Rodriguez-Gallardo, M.
name: Crespo, R.
name: Thompson, I. J.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Benchmark calculations are performed aiming to test the use of two different pseudo-state bases on the the Multiple Scattering expansion of the total Transition amplitude (MST) scattering framework. Calculated differential cross sections for p-6He inelastic scattering at 717 MeV/u show a good agreement between the observables calculated in the two bases. This result gives extra confidence on the pseudo-state representation of continuum states to describe inelastic/breakup scattering.
description: 4 pages, 2 figures. Published in Physical Review C
Safety Implications from Design Exceptions
Creators: name: Agent, Kenneth R.
name: Pigman, Jerry G.
name: Stamatiadis, Nikiforos
Publisher: name: Kentucky Transportation Center, University of Kentucky
Year: 2002
Subjects: subject: Transportation Engineering

description: The objectives of this study were to: a) summarize past design exceptions to document their frequency and reason for their use and b) determine if any adverse safety implications can be related to adopting design policies and practices related to design exceptions.  The design exception file maintained by the Kentucky Transportation Cabinet was obtained with data obtained relating to the types of project, exceptions requested, and the reasons for the various exceptions. A site visit was made to a large number of the locations where the project was built with the requested design exception. Available crash data were obtained at these locations.  There was an average of 39 design exceptions per year from 1993 through 1998. The majority of the projects involved a bridge replacement with the next most frequent being roadway widening reconstruction projects and construction of turning lanes. The most common design exception was for a design speed lower than the posted speed limit followed by a reduction in either the sight distance, curve radius, or shoulder width. The most common reason for the request referred to the existing conditions on the road followed by the right-of-way issue and project cost. The crash analysis showed that, with a very few exceptions, use of the design exception process did not result in either construction of projects with high crash rates when compared to average statewide rates or an increase in crashes after construction compared to before construction.  The analysis showed that the design exception projects resulted in an improvement over the prior condition although some aspect of the design may not be typical. The reasons for the design exceptions have been well documented, and there is no evidence that construction of projects with a design exception had an adverse effect on highway safety.
The Spitzer View of Low-Metallicity Star Formation: I. Haro 3
Creators: name: Hunt, L. K.
name: Thuan, T. X.
name: Sauvage, M.
name: Izotov, Y. I.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present Spitzer observations of the blue compact dwarf galaxy (BCD) Haro 3, with an oxygen abundance of 12+log(O/H)=8.32. These data are part of a larger study of star formation and dust in low-metallicity environments.The IRS spectrum of Haro 3 shows strong narrow Polycyclic Aromatic Hydrocarbon (PAH) emission, with high equivalent widths. Gaseous nebular fine-structure lines are also seen. Despite the absence of optical high-excitation lines, a faint high-ionization [O IV] line at 25.89 micron indicates the presence of radiation as hard as 54.9 eV. A CLOUDY model suggests that the MIR lines originate in two regions: a low-extinction optically-emitting region, and an optically invisible one with much higher extinction. The morphology of Haro 3 changes with wavelength. IRAC 4.5 micron traces extended stellar photospheric emission from the body of the galaxy and hot dust continuum coming mainly from star-forming regions; 8 micron probes extended PAH emission coming mainly from the general ISM; MIPS 24 and 70 micron images map compact small-grain warm dust emission associated with active star formation, and 160 micron reflects cooler extended dust associated with older stellar populations. We have derived the optical-to-radio spectral energy distribution (SED) of the brightest star-forming region A in Haro 3. The best-fit DUSTY model of the SED gives a total luminosity of 2.8e9 Lsun and a mass of 2.8e6 Msun for the ionizing clusters. We infer an extinction A(V)<3, intermediate between the optical A(V)~0.5 and the radio A(V)~8, consistent with the picture that longer wavelength observations probe more deeply into star-forming regions.
description: 42 pages, 10 figures, accepted for publication in the Astrophysical Journal
Analysis of Traffic Crash Data in Kentucky (1997-2001)
Creators: name: Agent, Kenneth R.
name: Pigman, Jerry G.
name: Barrett, Monica L.
name: Green, Eric R.
Publisher: name: Kentucky Transportation Center, University of Kentucky
Year: 2002
Subjects: subject: Transportation Engineering

description: This report documents an analysis of traffic crash data in Kentucky for the years of 1997 thro ugh 2001. A primary objective of this study was to determine average crash statistics for Kentucky highways. Average and critical numbers and rates of crashes were calculated for various types of highways in rural and urban areas. These data can be used in Kentucky’s procedure to identify locations that have abnormal rates or numbers of crashes.  The other primary objective of this study was to provide data, which can be used in the preparation of the problem identification portion of Kentucky’s Annual Highway Safety Plan. County and city crash statistics were analyzed. A summary of results and recommendations in several problem identification areas is presented. These general areas include alcohol involvement, occupant protection, speed, teenage driv ers, pedestrians, bicycles, motorcycles, trucks, and vehicle defects. Other areas included in the analysis for which specific recommendations were not made include drug involvement, school bus crashes, and train crashes.  The police report was changed s tarting in January 2000. Some of the codes were changed from previous years, which may result in changes in some of the data. Also, the crash data are now contained in the Collision Report Analysis for Safer Highways (CRASH) database. This data base is updated daily so the number of crashes in a given calendar year will continue to change for a substantial time after the end of that year.
Superlattices based on van der Waals 2D materials
Creators: name: Ryu, Yu Kyoung
name: Frisenda, Riccardo
name: Castellanos-Gomez, Andres
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Two-dimensional (2D) materials exhibit a number of improved mechanical, optical, electronic properties compared to their bulk counterparts. The absence of dangling bonds in the cleaved surfaces of these materials allows combining different 2D materials into van der Waals heterostructures to fabricate p-n junctions, photodetectors, 2D-2D ohmic contacts that show unexpected performances. These intriguing results are regularly summarized in comprehensive reviews. A strategy to tailor their properties even further and to observe novel quantum phenomena consists in the fabrication of superlattices whose unit cell is formed either by two dissimilar 2D materials or by a 2D material subjected to a periodical perturbation, each component contributing with different characteristics. Furthermore, in a 2D materials-based superlattice, the interlayer interaction between the layers mediated by van der Waals forces constitutes a key parameter to tune the global properties of the superlattice. The above-mentioned factors reflect the potential to devise countless combinations of van der Waals 2D materials based superlattices. In the present feature article, we explain in detail the state-of-the-art of 2D materials-based superlattices and we describe the different methods to fabricate them, classified as vertical stacking, intercalation with atoms or molecules, moiré patterning, strain engineering and lithographic design. We also aim to highlight some of the specific applications for each type of superlattices.
description: Perspective article. 6 Figures. 133 references
NGC 6441: another indication for a very high helium content in Globular Cluster stars
Creators: name: Caloi, V.
name: D'Antona, F.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The metal-rich bulge globular cluster NGC 6441 shows a well developed blue horizontal branch (Rich et al.), together with a strong slope upward from the red clump to the blue of the RR Lyrae region. Both features, the former corresponding to the well-known second parameter problem, are not explained by conventional evolutionary models. Helium self-enrichment is proposed as a possible solution to both questions, a mechanism already invoked for the interpretation of the peculiarities in NGC 2808 and M13. We make use of horizontal branch simulations, covering a wide range in main sequence helium abundance, to investigate whether the main features of NGC 6441 horizontal branch population, including the RR Lyrae variables period, can be reproduced. To describe the horizontal branch of NGC 6441, the helium content Y in the red clump must reach at least 0.35; values up to Y~0.37 are necessary to populate the RR Lyr region, reproducing also the observed mean long periods; depending on the dispersion in mass loss assumed in the simulations, values up to Y~0.38--0.40 are necessary to populate the blue HB. The total self--enriched population amounts to ~60% of the whole stellar content. Self-enrichment and multiple star formation episodes in the early evolution of globular clusters appear more and more able to account for many of the chemical and population peculiarities observed in these systems. The very large helium abundances (Y>0.35) required for ~14% of the horizontal branch population pose some problem on the enrichment mechanisms.
description: 9 pages, 10 figures, accepted for publication in Astronomy and Astrophysics
Periodic orbits in Rössler system
Creators: name: Gierzkiewicz, Anna
name: Zgliczyński, Piotr
Publisher: name: arXiv
Year: 2021
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: We prove the existence of $n$-periodic orbits for almost all $n\in\mathbb{N}$ in the Rössler system with attracting periodic orbit, for two sets of parameters. The proofs are computer-assisted.
Safety Evaluation of New Roads
Creators: name: Agent, Kenneth R.
name: Pigman, Jerry G.
Publisher: name: Kentucky Transportation Center, University of Kentucky
Year: 2002
Subjects: subject: Transportation Engineering

description: The primary objective of this research study was to evaluate the crash history of bypass routes to determine if there were unusual patterns or changes in the crash history on these routes over the first years of operation. The focus of the evaluation was to collect data at bypass routes opened in recent years in Kentucky. Crash patterns were summarized with recommendations made for countermeasures to reduce the probability of crashes, specifically at intersections, with an emphasis on the early stages of operation. The literature was reviewed, crash data were obtained at nine case study bypasses, and discussions were held with representatives from traffic, design, and construction at various district offices across Kentucky.  The analysis found that the crash rates on the bypass routes are generally lower than statewide rates for the same type of highway. The exception was a higher fatal rate in a few instances. The large majority of crashes occurring on these routes have been at intersections. All of the fatal crashes were at intersections. The most common types of crashes have been an angle crash at stop approaches and rear end crashes at intersections with a traffic signal. There were several opposing left turn crashes at some signalized intersections. The angle crashes at the stop controlled intersections typically involved a driver stopping and then pulling into the path of a vehicle on the bypass. A driver disregarded the stop sign in only a small number of these crashes.  The major change in traffic control which has occurred at the intersections after the opening of the bypasses has been the installation of a traffic signal with this resulting in a large reduction in angle crashes. The occurrence of a large number of crashes immediately after the opening of a bypass was not generally found. The two fatal crashes which occurred on the Morganfield bypass in the first few weeks after opening, in which local drivers disregarded a stop sign, were exceptions to the typical crash pattern found at the other locations.  Recommendations were developed in the general areas of: public information, enforcement, traffic control and design. The recommendations were further divided into those which should be done and those which may be used. The recommendations relate to intersections since this is where the large majority of crashes, especially those resulting in serious injuries, occurred.
Bei and the passive in Cantonese
Creators: name: Li, J. Cora R.
Publisher: name: University of British Columbia
Year: 2009

description: This paper studies the nature of the BEI-construction in Cantonese, with Mandarin as the standard language of comparison. Although the BEI-construction has been much studied in Mandarin, the same in not true for Cantonese. Although this construction has traditionally been termed a "passive", I will show that it can have a different range of semantic interpretations in Cantonese. I argue that BEI is not confined to passive, but is used under certain circumstances to form a causative construction as well. The differences in behaviour between passive-BEI and causative-BEI can be seen in tests with anaphoric binding. I conclude that while the passive structure is mono-clausal, the causative structure must be bi-clausal. The Cantonese BEI-constructions have an obligatory agent-phrase which cannot be dropped. This differs from Mandarin and the challenge is to find an account for this phenomenon, especially if we are to claim that this construction is a passive. The optionality of the agent phrase is characteristic of passives and yet Cantonese deviates from this norm. I argue that passive in Cantonese is a syntactic process and predict that only transitive verbs may participate in this construction. I utilize the universal v-VP structure on transitive verbs, proposed by Chomsky (1995), to guarantee that the external theta role must be retained. I also examine the much debated status of BEI which is used in the BEI-construction. Although this construction can be used to derive both a passives and a causatives, it does not necessarily mean that two separate BEIs must be posited. I conclude that BEI can be treated as a category-neutral element which can interact in both causative and passive structures. To support this proposal I appeal to the functional versus lexical distinction of categories and projections.
Detection of a High-Temperature Blackbody Hump in Black Hole Spectra. The strongly redshifted annihilation line
Creators: name: Titarchuk, Lev
name: Seifina, Elena
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We discovered a so called high-temperature blackbody (HBB) component, found in the 15 -- 40 keV range, in the broad-band X-ray energy spectra of black hole (BH) candidate sources. A detailed study of this spectral feature is presented using data from five of the Galactic BH binaries, Cyg X-1, GX 339-4, GRS 1915+105, SS 433 and V4641~Sgr in the low/hard, intermediate, high/soft and very soft spectral states (LHS, IS, HSS and VSS, respectively) and spectral transitions between them using {\it RXTE}, INTEGRAL and BeppoSAX data. In order to fit the broad-band energy spectra of these sources we used an additive XSPEC model, composed of the Comptonization component and the Gaussian line component. In particular, we reveal that the IS spectra have the HBB component which color temperature, kT_HBB} is in the range of 4.5 -- 5.9 keV. This HBB feature has been detected in some spectra of these five sources only in the IS (for the photon index Gamma>1.9) using different X-ray telescopes. We also demonstrate that a timescale of the HBB-feature is of orders of magnitude shorter than the timescale of the iron line and its edge. That leads us to conclude that these spectral features are formed in geometrically different parts of the source and which are not connected to each other. Laurent & Titarchuk (2018) demonstrated a presence of a gravitational redshifted annihilation line emission in a BH using the Monte-Carlo simulations and therefore the observed HBB hump leads us to suggest this feature is a gravitational redshifted annihilation line observed in these black holes
description: 32 pages, 16 figures, 18 Tables
COVID-19: the essential in three stages
Creators: name: Steinberg, Irene
Publisher: name: figshare
Year: 2021
Subjects: subject: 110305 Emergency Medicine
subject: FOS: Clinical medicine
subject: 110310 Intensive Care
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: When the first cases of COVID-19 infection started to be detected the profound difference between patients in terms of severity of disease quickly became evident. A vast majority of patients remained asymptomatic and eventually healed while some, despite lacking initial symptom, eventually worsen and a few fell ill quite rapidly. While facing a new disease, COVID-19 pneumonia was approached based on medical knowledge translated from the most similar illness but, a year later since the beginning of the outbreak in Northern Italy, knowledge has evolved. This text has the intent to offer a comprehensive view of COVID-19 pneumonia and its treatment options as a continuum of the same but complex disease, from the early to the late phase.
A bas le pavillon blanc
Creators: name: Musée National Des Arts Et Traditions Populaires (Paris)
name: Centre D'ethnologie Française
Publisher: name: École des Hautes Études en Sciences Sociales; Institut  interdisciplinaire d'anthropologie du contemporain (Paris); Laboratoire d'anthropologie et d'histoire de l'institution de la culture (Paris)
Year: 2024

Abstract
Abstract
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Mon père est marchand de noix
Creators: name: Musée National Des Arts Et Traditions Populaires (Paris)
name: Centre D'ethnologie Française
Publisher: name: École des Hautes Études en Sciences Sociales; Institut  interdisciplinaire d'anthropologie du contemporain (Paris); Laboratoire d'anthropologie et d'histoire de l'institution de la culture (Paris)
Year: 2024

Abstract
Abstract
Abstract
Letter from James Goldie to J.E. McAllister and R.S. Dormer, February 13, 1930
Creators: name: Goldie, James
Publisher: name: The University of British Columbia
Year: 2017

description: Letter to J.E. McAllister and R.S. Dormer from James Goldie, dated February 13, 1930, regarding Ranche finances and mention of possible future expenses of pumping water.
On Ramanujan Sums of a Real Variable and a New Ramanujan Expansion for the Divisor Function
Creators: name: Fox, Matthew S.
name: Karamchedu, Chaitanya
Publisher: name: arXiv
Year: 2020
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics

description: We show that the absolute convergence of a Ramanujan expansion does not guarantee the convergence of its real variable generalization, which is obtained by replacing the integer argument in the Ramanujan sums with a real number. We also construct a new Ramanujan expansion for the divisor function. While our expansion is amenable to a continuous and absolutely convergent real variable generalization, it only interpolates the divisor function locally on $\mathbb{R}$.
description: 6 pages
La plus belle fille qu'il y a en France
Creators: name: Musée National Des Arts Et Traditions Populaires (Paris)
name: Centre D'ethnologie Française
Publisher: name: École des Hautes Études en Sciences Sociales; Institut  interdisciplinaire d'anthropologie du contemporain (Paris); Laboratoire d'anthropologie et d'histoire de l'institution de la culture (Paris)
Year: 2024

Abstract
Abstract
Abstract
Flavor Physics in SO(10) GUTs with Suppressed Proton decay Due to Gauged Discrete Symmetry
Creators: name: Mohapatra, R. N.
name: Azatov, A. T.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Generic SO(10) GUT models suffer from the problem that Planck scale induced non-renormalizable proton decay operators require extreme suppression of their couplings to be compatible with present experimental upper limits. One way to resolve this problem is to supplement SO(10) by simple gauged discrete symmetries which can also simultaneously suppress the renormalizable R-parity violating ones when they occur and make the theory "more natural". Here we discuss the phenomenological viability of such models. We first show that for both classes of models, e.g the ones that use ${\bf 16}_H$ or ${\bf 126}_H$ to break B-L symmetry, the minimal Higgs content which is sufficient for proton decay suppression is inadequate for explaining fermion masses despite the presence of all apparently needed couplings. We then present an extended ${\bf 16}_H$ model, with three {\bf 10} and three {\bf 45}-Higgs, where is free of this problem. We propose this as a realistic and "natural" model for fermion unification and discuss the phenomenology of this model e.g. its predictions for neutrino mixings and lepton flavor violation.
description: 21 pages, 2 figures