cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Tunable Line Node Semimetals
Creators: name: Phillips, Michael
name: Aji, Vivek
Publisher: name: arXiv
Year: 2014
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Weyl semimetals are examples of a new class of topological states of matter which are gapless in the bulk with protected surface states. Their low energy sector is characterized by massless chiral fermions which are robust against translationally invariant perturbations. A variant of these systems have two non-degenerate bands touching along lines rather than points. A proposal to realize such a phase involves alternating layers of topological insulators and magnetic insulators, where the magnetization lies perpendicular to the symmetry axis of the heterostructure. The shape, size and the dispersion in the vicinity of the nodal lines varies with the strength of the magnetization, offering a new knob to control the properties of the system. In this paper we map out the evolution of the nodal lines and the dependence of the conductivity on magnetization and identify signatures of the low energy sector in quantum oscillation measurements.
description: 8 pages, 17 figures. Accepted for publication in PRB
Cracking the Puzzle of CO2 Formation on Interstellar Ices. Quantum Chemical and Kinetic Study of the CO + OH -> CO2 + H Reaction
Creators: name: Molpeceres, Germán
name: Enrique-Romero, Joan
name: Aikawa, Yuri
Publisher: name: arXiv
Year: 2023
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: CO2 is one of the dominant components of the interstellar ice. Recent observations show CO2 exists more abundantly in polar (H2O-dominated) ice than in apolar (H2O-poor) ice. CO2 ice formation is primarily attributed to the reaction between CO and OH, which has a barrier. Highly accurate quantum chemical calculations were employed to analyze the stationary points of the potential energy surfaces of the title reaction in the gas phase on a H2O and CO clusters. Microcanonical transition state theory was used as a diagnostic tool for the efficiency of the reaction under ISM conditions. We simulate the kinetics of ice chemistry, considering different scenarios involving non-thermal processes and energy dissipation. The CO + OH reaction proceeds through the remarkably stable intermediate HOCO radical. On the H2O cluster, the formation of this intermediate is efficient, but the subsequent reaction leading to CO2 formation is not. Conversely, HOCO formation on the CO cluster is inefficient without external energy input. Thus, CO2 ice cannot be formed by the title reaction alone either on the H2O cluster or CO cluster. In the polar ice, CO2 ice formation is possible via CO + OH -> HOCO, followed by HOCO + H ->CO2 + H2, as demonstrated by abundant experimental literature. In apolar ice, CO2 formation is less efficient because HOCO formation requires external energy. Our finding is consistent with the JWST observations. Further experimental work is encouraged using low-temperature OH radicals.
description: Accepted for publication in Astronomy and Astrophysics
A Blow-Up Result for Dyadic Models of the Euler Equations
Creators: name: Jeong, In-Jee
name: Li, Dong
Publisher: name: arXiv
Year: 2014
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: We partially answer a question raised by Kiselev and Zlatos in \cite{MR2180809}; in the generalized dyadic model of the Euler equation, a blow-up of $H^{1/3+δ}$-norm occurs. We recover a few previous blow-up results for various related dyadic models as corollaries.
description: 8 pages
Toward the Detection of Exoplanet Transits with Polarimetry
Creators: name: Wiktorowicz, Sloane J.
name: Laughlin, Gregory P.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: In contrast to photometric transits, whose peak signal occurs at mid-transit due to occultation of the brightest region of the disk, polarimetric transits provide a signal upon ingress and egress due to occultation of the polarized stellar limb. Limb polarization, the bright corollary to limb darkening, arises from the $90^\circ$ scattering angle and low optical depth experienced by photons at the limb. In addition to the ratio $R_{\rm p} / R_*$, the amplitude of a polarimetric transit is expected to be controlled by the strength and width of the stellar limb polarization profile, which depend on the scattering-to-total opacity ratio at the stellar limb. We present a short list of the systems providing the highest expected signal-to-noise ratio for detection of this effect, and we draw particular attention to HD 80606b. This planet is spin/orbit misaligned, has a three-hour ingress, and has a bright parent star, which make it an attractive target. We report on test observations of an HD 80606b ingress with the POLISH2 polarimeter at the Lick Observatory Shane 3-m telescope. We conclude that unmodeled telescope systematic effects prevented polarimetric detection of this event. We outline a roadmap for further refinements of exoplanet polarimetry, whose eventual success will require a further factor of ten reduction in systematic noise.
description: 6 pages, 5 figures, in press (ApJ)
SHPO: Historic Building Survey of the Vertical Integration Building (8BR2086) Cape Canaveral Air Force Station (CCAFS), Florida
Creators: name: Browning, Kurt S.
Publisher: name: Florida Division of Historical Resources
Year: 2007
Subjects: subject: Florida (State / Territory)
valueUri: https://core.tdar.org/browse/geographic-keyword/2273/florida-state-territory
subject: Cape Canaveral
valueUri: https://core.tdar.org/browse/geographic-keyword/23155/cape-canaveral
subject: Brevard (County)
valueUri: https://core.tdar.org/browse/geographic-keyword/14443/brevard-county
subject: Cold War
valueUri: https://core.tdar.org/browse/temporal-keyword/7288/cold-war
subject: vertical integration building
valueUri: https://core.tdar.org/browse/site-name/116833/vertical-integration-building
subject: 8BR02086
valueUri: https://core.tdar.org/browse/site-name/116244/8br02086
subject: Cape Canaveral Air Force Station
valueUri: https://core.tdar.org/browse/other-keyword/96049/cape-canaveral-air-force-station
subject: Architectural Documentation
valueUri: https://core.tdar.org/browse/investigation-type/16/architectural-documentation
subject: Consultation
valueUri: https://core.tdar.org/browse/investigation-type/4/consultation
subject: Site Evaluation / Testing
valueUri: https://core.tdar.org/browse/investigation-type/10/site-evaluation-testing

description: SHPO Correspondence regarding the demolition of the vertical integration building.
Uncertainty Quantification of the Virial Black Hole Mass with Conformal Prediction
Creators: name: Yong, Suk Yee
name: Ong, Cheng Soon
Publisher: name: arXiv
Year: 2023
Subjects: subject: Machine Learning (cs.LG)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: Precise measurements of the black hole mass are essential to gain insight on the black hole and host galaxy co-evolution. A direct measure of the black hole mass is often restricted to nearest galaxies and instead, an indirect method using the single-epoch virial black hole mass estimation is used for objects at high redshifts. However, this method is subjected to biases and uncertainties as it is reliant on the scaling relation from a small sample of local active galactic nuclei. In this study, we propose the application of conformalised quantile regression (CQR) to quantify the uncertainties of the black hole predictions in a machine learning setting. We compare CQR with various prediction interval techniques and demonstrated that CQR can provide a more useful prediction interval indicator. In contrast to baseline approaches for prediction interval estimation, we show that the CQR method provides prediction intervals that adjust to the black hole mass and its related properties. That is it yields a tighter constraint on the prediction interval (hence more certain) for a larger black hole mass, and accordingly, bright and broad spectral line width source. Using a combination of neural network model and CQR framework, the recovered virial black hole mass predictions and uncertainties are comparable to those measured from the Sloan Digital Sky Survey. The code is publicly available at https://github.com/yongsukyee/uncertain_blackholemass.
description: Accepted for publication in MNRAS. 15 pages, 11 figures, 2 tables
Notas breves sobre los significados del árbol en el universo martiano / Brief notes on the meanings of the tree in the universe of José Martí
Creators: name: González-Sivilla, Roeris
name: Delgado Bueno, Yelena
Publisher: name: Zenodo
Year: 2023
Subjects: árbol, significación, ambientalismo, obra martiana

description: Notas breves sobre la significación que le atribuye José Martí en su obra al árbol, como recurso metafórico para aludir a hechos procesos o cosas, que forman parte de lo cotidiano del género humano, o para señalar los valores objetivos de los árboles para la vida de la humanidad y para la naturaleza en general. Brief notes on the significance that José Martí attributes to the tree in his work, as a metaphorical resource to allude to events, processes or things that are part of the daily life of the human race, or to indicate the objective values of trees for the life of the humanity and nature in general.
Is the X-ray bright z = 5.5 quasar SRGE J170245.3+130104 a blazar?
Creators: name: An, Tao
name: Wang, Ailing
name: Liu, Yuanqi
name: Sotnikova, Yulia
name: Zhang, Yingkang
name: Aditya, J. N. H. S.
name: Jaiswal, Sumit
name: Khorunzhev, George
name: Lao, Baoqiang
name: Lin, Ruqiu
name: Mikhailov, Alexander
name: Mingaliev, Marat
name: Mufakharov, Timur
name: Sazonov, Sergey
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Jets may have contributed to promoting the growth of seed black holes in the early Universe, and thus observations of radio-loud high-redshift quasars are crucial to understanding the growth and evolution of the early supermassive black holes. Here we report the radio properties of an X-ray bright $z=5.5$ quasar, SRGE J170245.3+130104 (J1702+1301). Our high-resolution radio images reveal the radio counterpart at the optical position of J1702+1301, while another radio component is also detected at $\sim$23.5\arcsec\ to the southwest. Our analysis suggests that this southwest component is associated with a foreground galaxy at $z\approx 0.677$, which is mixed with J1702+1301 in low-frequency low-resolution radio images. After removing the contamination from this foreground source, we recalculated the radio loudness of J1702+1301 to be $R>$1100, consistent with those of blazars. J1702+1301 exhibits a flat radio spectrum ($α= -0.17 \pm 0.05$, $S \propto ν^α$) between 0.15 and 5 GHz; above 5 GHz, it shows a rising spectrum shape, and the spectral index $α^{8.2}_{4.7}$ appears to be correlated with the variation of the flux density: in burst states, $α^{8.2}_{4.7}$ becomes larger. J1702+1301 displays distinct radio variability on timescales from weeks to years in the source's rest frame. These radio properties, including high radio loudness, rising spectrum, and rapid variability, tend to support it as a blazar.
description: accepted for publication in Monthly Notices of the Royal Astronomical Society
Confirmation of an He I evaporating atmosphere around the 650-Myr-old sub-Neptune HD235088 b (TOI-1430 b) with CARMENES
Creators: name: Orell-Miquel, J.
name: Lampón, M.
name: López-Puertas, M.
name: Mallorquín, M.
name: Murgas, F.
name: Peláez-Torres, A.
name: Pallé, E.
name: Esparza-Borges, E.
name: Sanz-Forcada, J.
name: Tabernero, H. M.
name: Nortmann, L.
name: Nagel, E.
name: Parviainen, H.
name: Osorio, M. R. Zapatero
name: Caballero, J. A.
name: Czesla, S.
name: Cifuentes, C.
name: Morello, G.
name: Quirrenbach, A.
name: Amado, P. J.
name: Fernández-Martín, A.
name: Fukui, A.
name: Henning, Th.
name: Kawauchi, K.
name: de Leon, J. P.
name: Molaverdikhani, K.
name: Montes, D.
name: Narita, N.
name: Reiners, A.
name: Ribas, I.
name: Sánchez-López, A.
name: Schweitzer, A.
name: Stangret, M.
name: Yan, F.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: HD235088 (TOI-1430) is a young star known to host a sub-Neptune-sized planet candidate. We validated the planetary nature of HD235088 b with multiband photometry, refined its planetary parameters, and obtained a new age estimate of the host star, placing it at 600-800 Myr. Previous spectroscopic observations of a single transit detected an excess absorption of He I coincident in time with the planet candidate transit. Here, we confirm the presence of He I in the atmosphere of HD235088 b with one transit observed with CARMENES. We also detected hints of variability in the strength of the helium signal, with an absorption of $-$0.91$\pm$0.11%, which is slightly deeper (2$σ$) than the previous measurement. Furthermore, we simulated the He I signal with a spherically symmetric 1D hydrodynamic model, finding that the upper atmosphere of HD235088 b escapes hydrodynamically with a significant mass loss rate of (1.5-5) $\times$10$^{10}$g s$^{-1}$, in a relatively cold outflow, with $T$=3125$\pm$375 K, in the photon-limited escape regime. HD235088 b ($R_{p}$ = 2.045$\pm$0.075 R$_{\oplus}$) is the smallest planet found to date with a solid atmospheric detection - not just of He I but any other atom or molecule. This positions it a benchmark planet for further analyses of evolving young sub-Neptune atmospheres.
description: Accepted for publication in A&A. 17 pages, 18 figures
Downturn LGD: A More Conservative Approach for Economic Decline Periods
Creators: name: Oliveira, Mauro R.
name: Neto, Armando Chinelatto
Publisher: name: arXiv
Year: 2014
Subjects: subject: Risk Management (q-fin.RM)
subject: FOS: Economics and business

description: The purpose of this paper is to identify a relevant statistical correlation between rate of default, RD, and loss given default, LGD, in a major Brazilian financial institution Retail Home Equity exposure rated using the IRB approach, so that we may find a causal relationship between the two risk parameters. Therefore, according to Central Bank of Brazil requirements, a methodology is applied to add conservatism to the estimation of the Loss Given Default parameter at times of economic decline, reflected as increased rates of default.
Additional file 2 of Co-occurrence across time and space of drug- and cannabinoid- exposure and adverse mental health outcomes in the National Survey of Drug Use and Health: combined geotemporospatial and causal inference analysis
Creators: name: Reece, Albert Stuart
name: Hulse, Gary Kenneth
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Pharmacology
subject: Biotechnology
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Additional file 2.
Historic Properties Investigations of Centaur Processing Facility, Interim Spin Test Facility, and Missile Assembly Building Parking Cape Canaveral Air Force Station Brevard County, Florida
Creators: name: USACE
Publisher: name: Environmental Resources Planning Section
Year: 2020
Subjects: subject: Florida (State / Territory)
valueUri: https://core.tdar.org/browse/geographic-keyword/2273/florida-state-territory
subject: Cape Canaveral
valueUri: https://core.tdar.org/browse/geographic-keyword/23155/cape-canaveral
subject: Brevard (County)
valueUri: https://core.tdar.org/browse/geographic-keyword/14443/brevard-county
subject: Centaur Processing Facility
valueUri: https://core.tdar.org/browse/site-name/116440/centaur-processing-facility
subject: Cape Canaveral Air Force Station
valueUri: https://core.tdar.org/browse/other-keyword/96049/cape-canaveral-air-force-station
subject: Interim Spin
valueUri: https://core.tdar.org/browse/other-keyword/164468/interim-spin
subject: Missile Assembly
valueUri: https://core.tdar.org/browse/other-keyword/164469/missile-assembly
subject: Architectural Documentation
valueUri: https://core.tdar.org/browse/investigation-type/16/architectural-documentation
subject: Historic Background Research
valueUri: https://core.tdar.org/browse/investigation-type/18/historic-background-research
subject: Systematic Survey
valueUri: https://core.tdar.org/browse/investigation-type/12/systematic-survey

description: During the week of August 27-31, 1990, Mobile District Archaeologists surveyed three tracts for the presence of cultural resources: the Interim Spin Test Facility, and the Missile Assembly Building Parking Lot. Centaur Processing Facility. The survey did not find any historic resources.
Permanent Electric Dipole Moment of Strontium Monofluoride as a Test of the Accuracy of a Relativistic Coupled Cluster Method
Creators: name: Prasannaa, V S
name: Abe, M
name: Das, B P
Publisher: name: arXiv
Year: 2014
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: The permanent electric dipole moment of the X 2 Σ+ electronic ground state of the strontium monofluoride molecule is calculated using a relativistic coupled cluster method. Our result is compared with those of other calculations and that of experiment. Individual contributions arising from different physical effects are presented. The result obtained suggests that the relativistic coupled cluster method used in the present work is capable of yielding accurate results for the permanent electric dipole moments of molecules for which relativistic effects cannot be ignored.
Quantum bounds on the generalized Lyapunov exponents
Creators: name: Pappalardi, Silvia
name: Kurchan, Jorge
Publisher: name: arXiv
Year: 2022
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We discuss the generalized quantum Lyapunov exponents $L_q$, defined from the growth rate of the powers of the square commutator. They may be related to an appropriately defined thermodynamic limit of the spectrum of the commutator, which plays the role of a large deviation function, obtained from the exponents $L_q$ via a Legendre transform. We show that such exponents obey a generalized bound to chaos due to the fluctuation-dissipation theorem, as already discussed in the literature. The bounds for larger $q$ are actually stronger, placing a limit on the large deviations of chaotic properties. Our findings at infinite temperature are exemplified by a numerical study of the kicked top, a paradigmatic model of quantum chaos.
description: The paper is dedicated to Professor Giulio Casati on the Occasion of his 80th Birthday, submitted to the Special Issue of Entropy: "Quantum chaos - dedicated to Professor Giulio Casati on the Occasion of His 80th Birthday"
Additional file 4 of Co-occurrence across time and space of drug- and cannabinoid- exposure and adverse mental health outcomes in the National Survey of Drug Use and Health: combined geotemporospatial and causal inference analysis
Creators: name: Reece, Albert Stuart
name: Hulse, Gary Kenneth
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Pharmacology
subject: Biotechnology
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Additional file 4.
Gravitational Kaluza-Klein modes in the String-Cigar Braneworld
Creators: name: Veras, D. F. S.
name: Silva, J. E. G.
name: Cruz, W. T.
name: Almeida, C. A. S.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this work the gravitational Kaluza-Klein (KK) modes are analysed on string-like braneworlds in six dimensions, namely the thin string-like Gherghetta-Shaposhnikov (GS) and the thick string-cigar model. We find a new massless mode in both modes satisfying the respective Schroedinger equation. By means of numerical analysis for both models, a complete graviton spectrum and eigenfunctions is attained. Besides the linear regime, the KK spectrum exhibits a decreasing behavior with an asymmetric mass gap with respect to the massless mode. The discontinuity is bigger in the GS model, and it is invariant upon the geometrical flow. A massive mode is obtained in the GS model with a tiny mass which does not match in any regime. It turns out that in the string-cigar model, the core brane structure smoothes and amplifies the KK modes near the brane. Further, the presence of a potential well allows the existence of resonant massive gravitons for small masses in the string-cigar scenario.
description: 15 pages, 12 figures
Additional file 3 of Co-occurrence across time and space of drug- and cannabinoid- exposure and adverse mental health outcomes in the National Survey of Drug Use and Health: combined geotemporospatial and causal inference analysis
Creators: name: Reece, Albert Stuart
name: Hulse, Gary Kenneth
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Pharmacology
subject: Biotechnology
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Additional file 3.
Clumping and X-Rays in cooler B supergiant stars
Creators: name: Bernini-Peron, Matheus
name: Marcolino, Wagner L. F.
name: Sander, Andreas A. C.
name: Bouret, Jean-Claude
name: Ramachandran, Varsha
name: Saling, Julian
name: Schneider, Fabian R. N.
name: Oskinova, Lidia M.
name: Najarro, Francisco
Publisher: name: arXiv
Year: 2023
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: B supergiants (BSGs) are evolved stars with effective temperatures between 10 to 30 kK and are important to understand massive star evolution. Located on the edge of the line-driven wind regime, the study of their atmospheres is helpful to understand phenomena such as the bi-stability jump. Key UV features of their spectra have so far not been reproduced by models for types later than B1. Here, we aim to remedy this situation via spectral analysis that accounts for wind clumping and X-rays. In addition, we investigate the evolutionary status of our sample stars based on the obtained stellar parameters. We determined parameters via quantitative spectroscopy using CMFGEN and PoWR codes. The models were compared to UV and optical data of four BSGs: HD206165, HD198478, HD53138, and HD164353. We also study the evolutionary status of our sample using GENEC and MESA tracks. When including clumping and X-rays, we find good agreements between synthetic and observed spectra for our sample stars. For the first time, we reproduced key lines in the UV. For that, we require a moderately clumped wind (f_infty > ~0.5). We also infer relative X-ray luminosities of ~10^-7.5 to 10^-8 -- lower than the typical ratio of 10^-7. Moreover, we find a possible mismatch between evolutionary and spectroscopic masses, which could be related to the mass-discrepancy problem present in other OB stars. Our results provide evidence that X-rays and clumping are needed to describe the winds of cool BSGs. However, their winds seem less structured than in earlier type stars. This aligns with observational X-rays and clumping constraints as well as recent hydrodynamical simulations. The BSGs' evolutionary status appears diverse: some objects are potentially post-red supergiants or merger products. The wind parameters provide evidence for a moderate mass-loss rate increase around the bi-stability jump. Abstract abridged
description: 27 pages, 22 figures, accepted for publication in A&A
Colour-magnitude diagrams of transiting Exoplanets - II. A larger sample from photometric distances
Creators: name: Triaud, Amaury H. M. J.
name: Lanotte, Audrey A.
name: Smalley, Barry
name: Gillon, Michael
Publisher: name: arXiv
Year: 2014
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Colour-magnitude diagrams form a traditional way of presenting luminous objects in the Universe and compare them to each others. Here, we estimate the photometric distance of 44 transiting exoplanetary systems. Parallaxes for seven systems confirm our methodology. Combining those measurements with fluxes obtained while planets were occulted by their host stars, we compose colour-magnitude diagrams in the near and mid-infrared. When possible, planets are plotted alongside very low-mass stars and field brown dwarfs, who often share similar sizes and equilibrium temperatures. They offer a natural, empirical, comparison sample. We also include directly imaged exoplanets and the expected loci of pure blackbodies. Irradiated planets do not match blackbodies; their emission spectra are not featureless. For a given luminosity, hot Jupiters' daysides show a larger variety in colour than brown dwarfs do and display an increasing diversity in colour with decreasing intrinsic luminosity. The presence of an extra absorbent within the 4.5 $μ$m band would reconcile outlying hot Jupiters with ultra-cool dwarfs' atmospheres. Measuring the emission of gas giants cooler than 1000 K would disentangle whether planets' atmospheres behave more similarly to brown dwarfs' atmospheres than to blackbodies, whether they are akin to the young directly imaged planets, or if irradiated gas giants form their own sequence.
description: 19 pages, 5 tables, 6 figures; to appear in MNRAS
Topological Floquet states on a Möbius band irradiated by circularly polarised light
Creators: name: Quelle, A.
name: Beugeling, W.
name: Smith, C. Morais
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Topological states of matter in equilibrium, as well as out of equilibrium, have been thoroughly investigated during the last years in condensed-matter and cold-atom systems. However, the geometric topology of the studied samples is usually trivial, such as a ribbon or a cylinder. In this paper, we consider a graphene Möbius band irradiated with circularly polarised light. Interestingly, due to the non-orientability of the Möbius band, a homogeneous quantum Hall effect cannot exist in this system, but the quantum spin Hall effect can. To avoid this restriction, the irradiation is applied in a longitudinal-domain-wall configuration. In this way, the periodic time-dependent driving term tends to generate the quantum anomalous Hall effect. On the other hand, due to the bent geometry of the Möbius band, we expect a strong spin-orbit coupling, which may lead to quantum spin Hall-like topological states. Here, we investigate the competition between these two phenomena upon varying the amplitude and the frequency of the light, for a fixed value of the spin-orbit coupling strength. The topological properties are analysed by identifying the edge states in the Floquet spectrum at intermediate frequencies, when there are resonances between the light frequency and the energy difference between the conduction and valence bands of the graphene system.
description: 9 pages, 5 figures
Chemistry of multiple stellar populations in the mono-metallic, in situ, bulge globular cluster NGC 6388
Creators: name: Carretta, Eugenio
name: Bragaglia, Angela
Publisher: name: arXiv
Year: 2023
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present the homogeneous abundance analysis for a combined sample of 185 giants in the bulge globular cluster (GC) NGC 6388. Our results are used to describe the multiple stellar populations and differences or analogies with bulge field stars. Proton-capture elements indicate that a single class of first-generation polluters is sufficient to reproduce both the extreme and intermediate parts of the anti-correlations among light elements O, Na, Mg, and Al, which is at odds with our previous results based on a much smaller sample. The abundance pattern of other species in NGC 6388 closely tracks the trends observed in bulge field stars. In particular, the alpha-elements, including Si, rule out an accreted origin for NGC 6388, confirming our previous results based on iron-peak elements, chemo-dynamical analysis, and the age-metallicity relation. The neutron-capture elements are generally uniform, although the [Zr/Fe] ratio shows an intrinsic scatter, correlated to Na and Al abundances. Instead, we do not find enhancement in neutron-capture elements for stars whose photometric properties would classify NGC 6388 as a type II GC. Together with the homogeneity in [Fe/H] we found in a previous paper, this indicates we need to better understand the criteria to separate classes of GCs, coupling photometry, and spectroscopy. These results are based on abundances of 22 species (O, Na, Mg, Al, Si, Ca, Ti, Sc, V, Cr, Mn, Fe, Co, Ni, Zn, Y, Zr, Ba, La, Ce, Nd, and Eu) from UVES spectra sampling proton-, alpha-, neutron-capture elements, and Fe-peak elements. For 12 species, we also obtain abundances in a large number of giants (up to 150) from GIRAFFE spectra.
description: 19 pages plus 6 pages of Appendix, 23 figures, 5 tables; accepted for publication on Astronomy and Astrophysics
Image enhancement with wavelet-optimized whitening
Creators: name: Auchère, Frédéric
name: Soubrié, Elie
name: Pelouze, Gabriel
name: Buchlin, Éric
Publisher: name: arXiv
Year: 2022
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: Due to its physical nature, the solar corona exhibits large spatial variations of intensity that make it difficult to simultaneously visualize the features present at all levels and scales. Many general-purpose and specialized filters have been proposed to enhance coronal images. However, most of them require the ad hoc tweaking of parameters to produce subjectively good results. Our aim was to develop a general purpose image enhancement technique that would produce equally good results, but based on an objective criterion. The underlying principle of the method is the equalization, or whitening, of power in the {\it à trous} wavelet spectrum of the input image at all scales and locations. An edge-avoiding modification of the {\it à trous} transform that uses bilateral weighting by the local variance in the wavelet planes is used to suppress the undesirable halos otherwise produced by discontinuities in the data. Results are presented for a variety of extreme ultraviolet (EUV) and white light images of the solar corona. The proposed filter produces sharp and contrasted output, without requiring the manual adjustment of parameters. Furthermore, the built-in denoising scheme prevents the explosion of high-frequency noise typical of other enhancement methods, without smoothing statistically significant small-scale features. The standard version of the algorithm is about two times faster than the widely used multiscale Gaussian normalization (MGN). The bilateral version is slower, but provides significantly better results in the presence of spikes or edges. Comparisons with other methods suggest that the whitening principle may correspond to the subjective criterion of most users when adjusting free parameters.
SHPO: Proposed Repair and Refurbishment of Facility 1744-Hangar U (8BR2588), Cape Canaveral Air Force Station (CCAFS), Brevard County, Florida
Creators: name: Blaylock, Michael A.
Publisher: name: 45 CES/CEVP
Year: 2018
Subjects: subject: Florida (State / Territory)
valueUri: https://core.tdar.org/browse/geographic-keyword/2273/florida-state-territory
subject: Cape Canaveral
valueUri: https://core.tdar.org/browse/geographic-keyword/23155/cape-canaveral
subject: Brevard (County)
valueUri: https://core.tdar.org/browse/geographic-keyword/14443/brevard-county
subject: 8BR02588
valueUri: https://core.tdar.org/browse/site-name/116952/8br02588
subject: Cape Canaveral Air Force Station
valueUri: https://core.tdar.org/browse/other-keyword/96049/cape-canaveral-air-force-station
subject: Architectural Documentation
valueUri: https://core.tdar.org/browse/investigation-type/16/architectural-documentation
subject: Consultation
valueUri: https://core.tdar.org/browse/investigation-type/4/consultation
subject: Records Search / Inventory Checking
valueUri: https://core.tdar.org/browse/investigation-type/8/records-search-inventory-checking
subject: Site Evaluation / Testing
valueUri: https://core.tdar.org/browse/investigation-type/10/site-evaluation-testing

description: SHPO correspondence regarding the refurbishment of Facility 1744-Hangar U (8BR2588), on CCAFS, Brevard County, Florida.
Lattice gauge ensembles and data management
Creators: name: Bali, Gunnar
name: Bignell, Ryan
name: Francis, Anthony
name: Gottlieb, Steven
name: Gupta, Rajan
name: Kanamori, Issaku
name: Kostrzewa, Bartosz
name: Kotov, Andrey Yu.
name: Kuramashi, Yoshinobu
name: Mawhinney, Robert
name: Schmidt, Christian
name: Söldner, Wolfgang
name: Sun, Peng
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: The generation of ensembles of gauge configurations is a considerable expense. The preservation and curation of these ensembles constitutes a valuable shared resource for the lattice field theory community. The organizers of Lattice 2022 dedicated a parallel session to the presentation of gauge ensembles and their generation, plans for ensemble publication and data management/storage activities of different collaborations. A summary of the twelve contributions is presented here.
description: Contribution to the 39th International Symposium on Lattice Field Theory (LATTICE2022), 8-13 August, 2022, Bonn, Germany, 23 pages
Dimension and invertibility of hyperbolic endomorphisms with singularities
Creators: name: Schmeling, Jörg
name: Troubetzkoy, Serge
Publisher: name: Weierstrass Institute
Year: 1996
Subjects: subject: cocycles
subject: transfer map
subject: Anosov system
subject: hyperbolic attractors
subject: existence of SBR measures
subject: Young dimension formula
subject: 37D99

description: We introduce a class of endomorphisms which are piecewise smooth and have hyperbolic attractors. This class generalizes the class of piecewise smooth diffeomorphisms with hyperbolic attractors studied by Pesin [9], Sataev [13], and others [1]. Examples in our class are the fat Belykh map, projections of Solenoids onto cross-sections, and crossed horseshoes. We first develop the stable manifold theory, the existence of SBR measures and the ergodic theory of our class of maps. This theory mostly parallels the invertible case so we only sketch some of the important arguments. We generally follow the outline of [9], details can be found there. Our main results, theorem 5.2 hold in the two dimensional case: if the product of the Lyapunov exponents is less than one the mapping being invertible µSBR-a.e. on the attractor is equivalent to the Young formula holding. If the mapping is not invertible a.e. we can calculate the defect in the dimension formula 5.4. If the product of the Lyapunov exponents is greater than one then the attractor is two dimensional and the mapping restricted to the attractor is not invertible on a set of positive measure. Finally, we also give an easily checkable sufficient condition for a map to belong to the general class of maps we consider. This condition is easy to check for the systems we were motivated. In particular, in [15] this theorem is applied to fat Belykh maps where the entire picture of everywhere invertibility, invertibility on the attractor, almost everywhere invertibility on the attractor and noninvertibility almost surely is understood. Kaplan and Yorke have conjectured that for a broad class of systems the dimension of the attractor equals the Lyapunov dimension for most maps from the class. The results of [15] imply that for the Belykh family the Kaplan-Yorke conjecture holds for almost all parameter values.
title: XPath-Based Template Language for Describing the Placement of Metadata within a Document
Creators: name: Musham, Vijay Kumar
Publisher: name: Old Dominion University Libraries
Year: 2010

description: In the recent years, there has been a tremendous growth in Internet and online resources that had previously been restricted to paper archives. OCR (Optical Character Recognition) tools can be used for digitalizing an existing corpus and making it available online. A number of federal agencies, universities, laboratories, and companies are placing their collections online and making them searchable via metadata fields such as author, title, and publishing organization. Manually creating metadata for a large collection is an extremely time-consuming task, and is difficult to automate, particularly for collections consisting of documents with diverse layout and structure. The Extract project at ODU has developed an automated metadata extraction system to support document collections with diverse structure and layout. A template language was developed for this purpose to describe the layout of metadata within diverse document layouts and has been used for several years. An alternative template language based on XPath was later proposed. This thesis involves the implementation of a Java based interpreter which executes the new template language to extract metadata from the documents. This thesis also involves the evaluation of the relative power and understandability of the two template languages.
Operation Lodestone: A Marine Archaeological Exploration Off Cape Canaveral and the Florida Keys Utilizing the Varian M-49A Proton Magnetometer to Determine the Locations of Early Shipwrecks
Creators: name: Harnett, Charles B.
Year: 1962
Subjects: subject: Florida (State / Territory)
valueUri: https://core.tdar.org/browse/geographic-keyword/2273/florida-state-territory
subject: Cape Canaveral
valueUri: https://core.tdar.org/browse/geographic-keyword/23155/cape-canaveral
subject: Brevard (County)
valueUri: https://core.tdar.org/browse/geographic-keyword/14443/brevard-county
subject: Spanish
valueUri: https://core.tdar.org/browse/culture-keyword/31/spanish
subject: Historic
valueUri: https://core.tdar.org/browse/culture-keyword/25/historic
subject: Water-Related
valueUri: https://core.tdar.org/browse/site-type/365/water-related
subject: Shipwreck
valueUri: https://core.tdar.org/browse/site-type/367/shipwreck
subject: Cape Canaveral Air Force Station
valueUri: https://core.tdar.org/browse/other-keyword/96049/cape-canaveral-air-force-station
subject: Spanish galleons
valueUri: https://core.tdar.org/browse/other-keyword/164505/spanish-galleons
subject: Proton Magnetometer
valueUri: https://core.tdar.org/browse/other-keyword/31436/proton-magnetometer
subject: Historic Background Research
valueUri: https://core.tdar.org/browse/investigation-type/18/historic-background-research
subject: Methodology, Theory, or Synthesis
valueUri: https://core.tdar.org/browse/investigation-type/6/methodology-theory-or-synthesis
subject: Reconnaissance / Survey
valueUri: https://core.tdar.org/browse/investigation-type/7/reconnaissance-survey
subject: Site Evaluation / Testing
valueUri: https://core.tdar.org/browse/investigation-type/10/site-evaluation-testing

description: This report describes a marine archaeological project to locate certain of these wrecks in the above-mentioned areas and the information obtained from that survey.A proton magnetometer was employed in the survey to detect ferrous masses that would be present in the sunken remains of old shipwrecks. Operation Lodestone resulted in the discovery of one modern wreck, the possible discovery of some five early wreck sites, and the examination of the remains of a known early wreck, from which criteria were established for carrying out future searches of this nature and for correlating and assessing previously acquired data.
The geometry of finite dimensional algebras with vanishing radical square
Creators: name: Bleher, Frauke M.
name: Chinburg, Ted
name: Huisgen-Zimmermann, Birge
Publisher: name: arXiv
Year: 2014
Subjects: subject: Representation Theory (math.RT)
subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics

description: Let $Λ$ be a basic finite dimensional algebra over an algebraically closed field, with the property that the square of the Jacobson radical $J$ vanishes. We determine the irreducible components of the module variety $\text{Mod}_{\bf d}(Λ)$ for any dimension vector $\bf d$. Our description leads to a count of the components in terms of the underlying Gabriel quiver. A closed formula for the number of components when $Λ$ is local extends existing counts for the two-loop quiver to quivers with arbitrary finite sets of loops. For any algebra $Λ$ with $J^2 = 0$, our criteria for identifying the components of $\text{Mod}_{\bf d}(Λ)$ permit us to characterize the modules parametrized by the individual irreducible components. Focusing on such a component, we explore generic properties of the corresponding modules by establishing a geometric bridge between the algebras with zero radical square on one hand and their stably equivalent hereditary counterparts on the other. The bridge links certain closed subvarieties of Grassmannians parametrizing the modules with fixed top over the two types of algebras. By way of this connection, we transfer results of Kac and Schofield from the hereditary case to algebras of Loewy length $2$. Finally, we use the transit of information to show that any algebra of Loewy length $2$ which enjoys the dense orbit property in the sense of Chindris, Kinser and Weyman has finite representation type.
Activity of Selected Solar Twins
Creators: name: Katsova, M. M.
name: Nizamov, B. A.
name: Shlyapnikov, A. A.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We analyze various tracers of magnetic activity for 23 solar twins which are characterized by significant scatter of lithium abundance in their atmospheres. A level of coronal and chromospheric activity has been studied from available X-ray and UV-archival data. It gives us a chance to compare coronae of solar twins of various ages with the solar case. We found a scatter in the X-ray to bolometric luminosity ratio $L_X/L_{bol}$ by several orders of magnitude, which exists in these stars along with a significant spread in Li abundance. This may link the surface activity of stars with phenomena at the base of their convective zones. The TESS data allowed us to reveal rotation modulation of stellar brightness associated with starspots. For some twins of our samples, periods of axial rotation are detected around 6 days, i.e. these stars rotate almost 4 times faster than the contemporary Sun. This indicates their relative youth. Flare activity of solar twins is discovered in the TESS data; we showed existence of various kinds of flares, and present temporal profiles for some of them. We obtained the energy about of $8 \times 10^{33}$ erg for the largest flare of our samples, lasting longer than 4 h. In addition, we discuss also magnetic fields and exoplanets, orbiting these stars.
description: 9 pages, 6 figures, 1 table, published in Geomagnetism and Aeronomy
Kochbuch aus Basel
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1790

description: Peter E. Burckhardt Geschenk 2022 2022,48H Öffentliche Bibliothek der Universität Basel
description: Deutsch
description: Über mehrere Generationen hinweg zwischen 1790 und 1900 verfasst.
description: Verzeichnung=Description=Inventaire Jan. 2023 HAN-Katalogisierungsregeln Minimalaufnahme nach Autopsie Studer
description: Erschliessungsniveau Minimalniveau
description: 2 Notizzettel
Characterizing current noise of commercial constant-current sources by using of an optically-pumped rubidium atomic magnetometer
Creators: name: Zhao, Ni
name: Zhang, Lulu
name: Yang, Yongbiao
name: He, Jun
name: Wang, Yanhua
name: Li, Tingyu
name: Wang, Junmin
Publisher: name: arXiv
Year: 2023
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: This paper introduces a method for characterizing the current noise of commercial constant-current sources(CCSs) using a free-induction-decay(FID) type optically-pumped rubidium atomic magnetometer driven by a radio-frequency(RF) magnetic field. We convert the sensitivity of the atomic magnetometer into the current noise of CCS by calibrating the coil constant. At the same time, the current noise characteristics of six typical commercial low-noise CCSs are compared. The current noise level of the KeySight Model B2961A is the lowest among the six tested CCSs, which is 36.233 0.022 nA / Hz1/2 at 1-25 Hz and 133.905 0.080 nA / Hz1/2 at 1-100 Hz respectively. The sensitivity of atomic magnetometer is dependent on the current noise level of the CCS. The CCS with low noise is of great significance for high-sensitivity atomic magnetometer. The research provides an important reference for promoting the development of high precision CCS, metrology and basic physics research.
description: 7pages,7figures
Additional file 1 of Co-occurrence across time and space of drug- and cannabinoid- exposure and adverse mental health outcomes in the National Survey of Drug Use and Health: combined geotemporospatial and causal inference analysis
Creators: name: Reece, Albert Stuart
name: Hulse, Gary Kenneth
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Pharmacology
subject: Biotechnology
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Additional file 1: Supplementary Table 1. Overall Data by Year. Supplementary Table 2. Line Slopes for Cannabis: Mental Illness Relationships (Fig. 3). Supplementary Table 3. Ethnic Cannabis Consumption Indices Supplementary Table 4. Spatial Panel General Method of Moments Models (Spgm) by Variable Domain. Supplementary Table 5. Spatial Panel Random Error Maximum Likelihood Models (Spreml) by Variable Domain. Supplementary Table 6. Comparison of Spreml Model Error Structure – Log Likelihood Values. Supplementary Table 7. Deciles of Cannabis Use and Modelled Serious Mental Illness. Supplementary Table 8. Mixed Effects Regression Results. Supplementary Table 9. Sensitivity Analysis – eValues. Supplementary Table 10. Analysis of Chi Squared Table for Trends by Legal Status.