cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
A combined EEG motor and speech imagery paradigm with automated successive halving for customizable command selection
Creators: name: Padfield, Natasha
name: Camilleri, Tracey
name: Fabri, Simon
name: Bugeja, Marvin
name: Camilleri, Kenneth
Publisher: name: Taylor & Francis
Year: 2024
Subjects: subject: Space Science
subject: Genetics
subject: FOS: Biological sciences
subject: Neuroscience
subject: Physiology
subject: Biological Sciences not elsewhere classified
subject: Information Systems not elsewhere classified
subject: Mental Health

description: The classification performance of endogenous electroencephalogram (EEG) brain-computer interfaces (BCIs) can be improved by hybridizing the paradigm through the use of commands from multiple paradigms. Hybrid paradigms using motor imagery (MI) and speech imagery (SI) have shown promise, but there is a lack of research into: i) their effectiveness when compared to pure MI and SI for multiclass problems, and ii) automated command selection. This study investigates multiclass MI and SI hybrid paradigms and compares the results to those obtained using pure MI and SI. Performance was assessed using F1 score and accuracy. The performances of all possible hybrid paradigm designs were assessed. The analysis indicated that hybridization does not always guarantee improved performance when compared to the pure paradigms, and there is inter-subject variation in the best paradigm. This confirmed the need for automated subject-specific hybrid paradigm designs. An automated hybrid paradigm selection technique using successive halving (SH) for expedited computational times was developed and results were compared to those obtained using a standard grid search. The SH approach resulted in an improvement in F1 score of 21.09% and 36.86% compared to MI and SI and led to a reduction in computational times of 82.80% compared to grid search.
Three-point correlators of twist-2 operators in N=4 SYM at Born approximation
Creators: name: Kazakov, Vladimir
name: Sobko, Evgeny
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We calculate two different types of 3-point correlators involving twist-2 operators in the leading weak coupling approximation and all orders in N_c in N=4 SYM theory. Each of three operators in the first correlator can be any component of twist-2 supermultiplet, though the explicit calculation was done for a particular component which is an SU(4) singlet. It is calculated in the leading, Born approximation for arbitrary spins j_1,j_2,j_3. The result significantly simplifies when at least one of the spins is large or equal to zero and the coordinates are restricted to the 2d plane spanned by two light-rays. The second correlator involves two twist-2 operators Tr X\nabla^{j_1}X +..., Tr Z\nabla^{j_2}Z+... and one Konishi operator Tr[\bar Z,\bar X]^2. It vanishes in the lowest g^0 order and is computed at the leading g^2 approximation.
description: 30 pages, 6 figures; version 2: normalization for propagators was changed, added references
Exploring the Outer Limits of Numerical Relativity
Creators: name: Lousto, Carlos O.
name: Zlochower, Yosef
Publisher: name: arXiv
Year: 2013
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We perform several black-hole binary evolutions using fully nonlinear numerical relativity techniques at separations large enough that low-order post-Newtonian expansions are expected to be accurate. As a case study, we evolve an equal-mass nonspinning black-hole binary from a quasicircular orbit at an initial coordinate separation of D=100M for three different resolutions. We find that the orbital period of this binary (in the numerical coordinates) is T=6422M. The orbital motion agrees with post-Newtonian predictions to within 1%. Interestingly, we find that the time derivative of the coordinate separation is dominated by a purely gauge effect leading to an apparent contraction and expansion of the orbit at twice the orbital frequency. Based on these results, we improved our evolution techniques and studied a set of black hole binaries in quasi-circular orbits starting at D=20M, D=50M, and D=100M for ~ 5, 3, and 2 orbits, respectively. We find good agreement between the numerical results and post-Newtonian predictions for the orbital frequency and radial decay rate, radiated energy and angular momentum, and waveform amplitude and phases. The results are relevant for the future computation of long-term waveforms to assist in the detection and analysis of gravitational waves by the next generation of detectors as well as the long-term simulations of black-hole binaries required to accurately model astrophysically realistic circumbinary accretion disks.
description: Revised version with longer and waveforms, new plots showing omega versus proper distance, a list of orbital periods and eccentricity, and a dozen new references
Simulations of Galileon modified gravity: Clustering statistics in real and redshift space
Creators: name: Wyman, Mark
name: Jennings, Elise
name: Lima, Marcos
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We use N-body simulations to study the statistics of massive halos and redshift space distortions for theories with a standard ΛCDM expansion history and a galileon-type scalar field. The extra scalar field increases the gravitational force, leading to enhanced structure formation. We compare our measurements of the real space matter power spectrum and halo properties with fitting formula for estimating these quantities analytically. We find that a model for power spectrum, halo mass-function and halo bias, derived from ΛCDM simulations can fit the results from our simulations of modified gravity when σ_8 is appropriately adjusted. We also study the redshift space distortions in the two point correlation function measured from these simulations, finding a difference in the ratio of the redshift space to real space clustering amplitude relative to standard gravity on all scales. We find enhanced clustering on scales r>10 Mpc/h and increased damping of the correlation function for scales r<9 Mpc/h. The boost in the clustering on large scales due to the enhanced gravitational forces cannot be mimicked in a standard gravity model by simply changing σ_8. This result illustrates the usefulness of redshift space distortion measurements as a probe of modifications to General Relativity.
description: 17 pages, 9 figures
Potential biomarkers identified in plasma metabolism in patients with gestational diabetes mellitus
Creators: name: Shen, Liming
name: Zhang, Huajie
name: Zhao, Yuxi
name: Danqing, Zhao
name: Chen, Xinqian
name: Khan, Naseer Ullah
name: Liu, Xukun
name: Iqbal, Javed
name: Liang, Yi
name: Zhu, Yuhua
name: Lin, Jing
Publisher: name: figshare
Year: 2021
Subjects: Diseases

description: Purpose: The present study is designed to find plasma metabolites that can be used as biomarkers for the prediction and diagnosis of gestational diabetes mellitus (GDM), and to clarify GDM-related mechanisms. Results: One hundred and seventy-two (172) and 478 differential metabolites were identified as differential metabolites in the plasma of GDM pregnant women at 12-16 weeks and 24-28 weeks, respectively. These two stages contain 40 metabolites. Most of them are associated with the mechanism of diabetes, and related to short-term and long-term complications in the perinatal period. Conclusion: Results in this study have shown that metabolism levels of amino acid, lipid metabolism, and folic acid synthesis in GDM patients are abnormal, which may be related to GDM pathogenesis. Six differential metabolites include (S)-Carvone, 17(S)-HDoHE, urocortisone, sebacic acid, 6α-Hydroxycastasterone, and atrazin-2-hydroxy may be early diagnosis biomarkers of GDM. The AUC of ROC (receiver operating characteristic) curve reaches 0.9800. At 24-28 weeks of pregnancy, Glycerophosphocholine, PC (14:0/0:0), LysoPC (22:4(7Z,10Z,13Z,16Z)), PE (18:3(9Z,12Z,15Z)/16:0), PS (18:0/18:1(9Z)), (S)-Carvone, and 17(S)-HDoHE can be used as auxiliary diagnostic markers for GDM, and the AUC values reached 0.9533 for those seven metabolites.
Cystophora Nilsson 1820
Creators: name: W. Christopher Wozencraft
Publisher: name: Zenodo
Year: 1993
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Carnivora
Phocidae
Cystophora

description: Cystophora Nilsson, 1820. Skand. Faun. Dagg. Djur., 1:382. TYPE SPECIES: Cystophora borealis Nilsson, 1820 (= Phoca cristata Erxleben, 1777). COMMENTS: Revised by King (1966).
description: Published as part of W. Christopher Wozencraft, 1993, Order Carnivora, pp. 279-348 in Mammal Species of the World (2 nd Edition), Washington and London :Smithsonian Institution Press on page 329, DOI: 10.5281/zenodo.7359191
description: {"references": ["Erxleben, J. C. P. 1777. Systema regni animalis per classes, ordines, genera, species, varietates, cum synonymia et historia animalium. Classis I. Mammalia. Weygandianis, Lipsiae, 636 pp.", "King, J. E. 1966. Relationships of the hooded and elephant seals (genera Cystophora and Mirounga). Journal of Zoology, London, 148: 385 - 398."]}
Potential biomarkers identified in plasma metabolism in patients with gestational diabetes mellitus
Creators: name: Shen, Liming
name: Zhang, Huajie
name: Zhao, Yuxi
name: Danqing, Zhao
name: Chen, Xinqian
name: Khan, Naseer Ullah
name: Liu, Xukun
name: Iqbal, Javed
name: Liang, Yi
name: Zhu, Yuhua
name: Lin, Jing
Publisher: name: figshare
Year: 2020
Subjects: Diseases

description: Purpose: The present study is designed to find plasma metabolites that can be used as biomarkers for the prediction and diagnosis of gestational diabetes mellitus (GDM), and to clarify GDM-related mechanisms. Results: One hundred and seventy-two (172) and 478 differential metabolites were identified as differential metabolites in the plasma of GDM pregnant women at 12-16 weeks and 24-28 weeks, respectively. These two stages contain 40 metabolites. Most of them are associated with the mechanism of diabetes, and related to short-term and long-term complications in the perinatal period. Conclusion: Results in this study have shown that metabolism levels of amino acid, lipid metabolism, and folic acid synthesis in GDM patients are abnormal, which may be related to GDM pathogenesis. Six differential metabolites include (S)-Carvone, 17(S)-HDoHE, urocortisone, sebacic acid, 6α-Hydroxycastasterone, and atrazin-2-hydroxy may be early diagnosis biomarkers of GDM. The AUC of ROC (receiver operating characteristic) curve reaches 0.9800. At 24-28 weeks of pregnancy, Glycerophosphocholine, PC (14:0/0:0), LysoPC (22:4(7Z,10Z,13Z,16Z)), PE (18:3(9Z,12Z,15Z)/16:0), PS (18:0/18:1(9Z)), (S)-Carvone, and 17(S)-HDoHE can be used as auxiliary diagnostic markers for GDM, and the AUC values reached 0.9533 for those seven metabolites.
Analyses of pion-nucleon elastic scattering amplitudes up to $O(p^4)$ in extended-on-mass-shell subtraction scheme
Creators: name: Chen, Yun-Hua
name: Yao, De-Liang
name: Zheng, H. Q.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We extend the analysis of elastic pion-nucleon scattering up to $O(p^4)$ level using extended-on-mass-shell subtraction scheme within the framework of covariant baryon chiral perturbation theory. Numerical fits to partial wave phase shift data up to $\sqrt{s}=1.13$ GeV are performed to pin down the free low energy constants. A good description to the existing phase shift data is achieved. We find a good convergence for the chiral series at $O(p^4)$, considerably improved with respect to the $O(p^3)$-level analyses found in previous literature. Also, the leading order contribution from explicit $Δ(1232)$ resonance and partially-included $Δ(1232)$ loop contribution are included to describe phase shift data up to $\sqrt{s}=1.20$ GeV. As phenomenological applications, we investigate chiral correction to the Goldberger-Treiman relation %$Δ_{GT}$ and find that it converges rapidly, and the $O(p^3)$ correction is found to be very small: $\simeq 0.2%$. We also get a reasonable prediction of pion-nucleon sigma term $σ_{πN}$ up to $O(p^4)$ by performing fits including both the pion-nucleon partial wave phase shift data and the lattice QCD data. We report that $σ_{πN}=52\pm7$ MeV from the fit without $Δ(1232)$, and $σ_{πN}=45\pm6$ MeV from the fit with explicit $Δ(1232)$.
description: The final version published in Phys.Rev. D 87, 054019 (2013)
Coherent State Wave Functions on a Torus with a Constant Magnetic Field
Creators: name: Fremling, Mikael
Publisher: name: arXiv
Year: 2013
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study two alternative definitions of localized states in the lowest Landau level (LLL) on a torus. One definition is to construct localized states, as projection of the coordinate delta function onto the LLL. Another definition, proposed by Haldane, is to consider the set of functions which have all their zeros at a single point. Since a LLL wave function on a torus, supporting $N_ϕ$ magnetic flux quanta, is uniquely defined by the position of its $N_ϕ$ zeros, this defines a set of functions that are expected to be localized around the point maximally far away form the zeros. These two families of localized states have many properties in common with the coherent states on the plane and on the sphere, {\em viz.} a resolution of unity and a self-reproducing kernel. However, we show that only the projected delta function is maximally localized. Additionally, we show how to project onto the LLL, functions that contain holomorphic derivatives and/or anti-holomorphic polynomials, and apply our methods in the description of hierarchical quantum Hall liquids
A theoretical investigation of the effect of upwash and camber on drag due to lift for rectangular wings at supersonic speeds
Creators: name: Seidman, Oscar
Publisher: name: California Institute of Technology
Year: 1955
Subjects: Aeronautics

description: NOTE:  Text or symbols not renderable in plain ASCII are indicated by [...]. Abstract is included in .pdf document.

A theoretical investigation was conducted, using linearized theory, to determine the combined effects of upwash and camber on drag due to lift for rectangular wings at supersonic speeds. Both the case of body upwash and the case of a uniform upwash field were considered. Previous studies have shown that body upwash and wing camber, acting separately, each reduce the drag due to lift for a rectangular wing. In the present investigation it was found that the individual effects as measured by the criterion [...] are additive and that there is a further gain which increased with decreasing aspect ratio. For the basic wing-body configuration investigated, with wing having a reduced aspect ratio of two, the upwash effect was much larger than the camber effect. For a complete aircraft configuration with lifting nose, optimum camber reduced the drag at a given lift by a somewhat smaller percentage than it did for an isolated wing. The analysis further indicated that use of moderate negative wing incidence could reduce aircraft drag at a given lift.
FyouTURES: board game to create future scenarios
Creators: name: DE ZUANI CASSINA, FRANCESCO
name: Miani, Lorenzo
name: D'Orto, Emma
Publisher: name: Zenodo
Year: 2024
Subjects: subject: physics education
subject: future scenarios
subject: Climatic changes
subject: decision making
subject: uncertainties
subject: board-game
subject: sustainability

description: This document presents an original board game designed and implemented for the first time within an orienting course for upper secondary school, held at the Department of Physics and Astronomy of the University of Bologna between October and November 2023.  

The theoretical approach behind the course was developed as part of the PhD theses of Lorenzo Miani, Francesco De Zuani Cassina and Emma d’Orto. 

The aim of the theoretical approach, and of the course that emerged from it, is to show how the epistemological aspects of physics can be useful in developing the sustainability skills needed to face the challenges of climate change. In particular, the course revolves around the themes of uncertainty, complexity, decision-making, knowledge and the ability to reason about possible and desirable futures.

The document contains: a short background of the course, the game board, the game rules, the wildcards included in the game and a guide to create narrative reports through the game (the wildcards, the game board and the role cards are also available as separate files).
Cystophora cristata
Creators: name: W. Christopher Wozencraft
Publisher: name: Zenodo
Year: 1993
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Carnivora
Phocidae
Cystophora
Cystophora cristata

description: Cystophora cristata (Erxleben, 1777). Syst. Regni Anim., 1:590. TYPE LOCALITY: "Habitat in Groenlandia australiori et Newfoundland". [S Greenland and Newfoundland]. DISTRIBUTION: N Atlantic and Arctic oceans, from Newfoundland (Canada) to S Greenland, Svalbard and Novaya Zemlya (Russia); occasionally south to Portugal and Florida (USA). SYNONYMS: borealis Nilsson, 1820; dimidiata Riippell, 1842. COMMENTS: Reviewed by Kovacs and Lavigne (1986, Mammalian Species, 258).
description: Published as part of W. Christopher Wozencraft, 1993, Order Carnivora, pp. 279-348 in Mammal Species of the World (2 nd Edition), Washington and London :Smithsonian Institution Press on page 329, DOI: 10.5281/zenodo.7359191
description: {"references": ["Kovacs, K. M., and D. M. Lavigne. 1986. Cystophora cristata. Mammalian Species, 258: 1 - 9."]}
Prediction of off design performance of multistage compressors
Creators: name: Hostetler, Glen W.
Publisher: name: California Institute of Technology
Year: 1965
Subjects: Engineering and Applied Science

description: A new method for predicting the off design performance of a multistage compressor has been developed. This method replaces the usual routine numerical integration through the compressor by approximate analytical integration. The overall compressor performance of the compressor is found as a perturbation of the design performance in terms of linear and quadratic expansions in two parameters, the deviation from the design flow rate and the deviation from the design speed. The procedure for this preliminary examination has been simplified by assuming that all the single stage performance characteristics are identical and that the difference between static and stagnation conditions are negligible.

The results of this method are quadratic equations, in terms of the two perturbation parameters, for the temperature ratio, pressure ratio and adiabatic efficiency of the overall compressor. The amount of numerical work in finding the coefficients of these quadratic expansions is not negligible, however the method appears promising. Reasonably accurate results are expected for speeds varying as much as ten per cent from design and flow rates varying as much as four per cent from the design flow.
Insights into the content and spatial distribution of dust from the integrated spectral properties of galaxies
Creators: name: Chevallard, Jacopo
name: Charlot, Stephane
name: Wandelt, Benjamin
name: Wild, Vivienne
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: [Abridged] We present a new approach to investigate the content and spatial distribution of dust in structurally unresolved star-forming galaxies from the observed dependence of integrated spectral properties on galaxy inclination. We develop an innovative combination of generic models of radiative transfer (RT) in dusty media with a prescription for the spectral evolution of galaxies, via the association of different geometric components of galaxies with stars in different age ranges. We show that a wide range of RT models all predict a quasi-universal relation between slope of the attenuation curve at any wavelength and V-band attenuation optical depth in the diffuse interstellar medium (ISM), at all galaxy inclinations. This relation predicts steeper (shallower) dust attenuation curves than both the Calzetti and MW curves at small (large) attenuation optical depths, which implies that geometry and orientation effects have a stronger influence on the shape of the attenuation curve than changes in the optical properties of dust grains. We use our combined RT and spectral evolution model to interpret the observed dependence of the Hα/Hβ ratio and ugrizYJH attenuation curve on inclination in a sample of ~23 000 nearby star-forming galaxies. From a Bayesian MCMC fit, we measure the central face-on B-band optical depth of this sample to be tau_B\perp~1.8\pm0.2. We also quantify the enhanced optical depth towards newly formed stars in their birth clouds, finding this to be significantly larger in galaxies with bulges than in disc-dominated galaxies, while tau_B\perp is roughly similar in both cases. Finally, we show that neglecting the effect of geometry and orientation on attenuation can severely bias the interpretation of galaxy spectral energy distributions, as the impact on broadband colours can reach up to 0.3-0.4 mag at optical wavelengths and 0.1 mag at near-infrared ones.
description: 32 pages, 3 tables, 41 figures, MNRAS in-press
Holographic quantum critical points in Lifshitz space-time
Creators: name: Mozaffar, M. Reza Mohammadi
name: Mollabashi, Ali
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study a minimally coupled charged scalar field in a charged Lifshitz background. For z=2, we find an analytic expression for the corresponding low energy retarded Green's function. Unlike the RN-AdS case, the position of the superfluid surfaces depends on the charge of the scalar field only through the IR scaling dimension. We show that by increasing the dynamical exponent, the dual theory becomes more stable. We also show that the background could suffer from an instability of the IR geometry leading to a bifurcating critical point. It also allows the existence of scalar hair, causing hybridized critical point. We have investigated stable an unstable regions in the parameter space.
description: 17 pages. 5 figures, v3 (Published version): references added + some clarifications
Generation of Primordial Magnetic Fields on Linear Over-density Scales
Creators: name: Naoz, Smadar
name: Narayan, Ramesh
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Magnetic fields appear to be present in all galaxies and galaxy clusters. Recent measurements indicate that a weak magnetic field may be present even in the smooth low density intergalactic medium. One explanation for these observations is that a seed magnetic field was generated by some unknown mechanism early in the life of the Universe, and was later amplified by various dynamos in nonlinear objects like galaxies and clusters. We show that a primordial magnetic field is expected to be generated in the early Universe on purely linear scales through vorticity induced by scale-dependent temperature fluctuations or equivalently, a spatially varying speed of sound of the gas. Residual free electrons left over after recombination tap into this vorticity to generate magnetic field via the Biermann battery process. Although the battery operates even in the absence of any relative velocity between dark matter and gas at the time of recombination, the presence of such a relative velocity modifies the predicted spatial power spectrum of the magnetic field. At redshifts of order a few tens, we estimate a root mean square field strength of order 1e-25 -1e-24 G on comoving scales~10 kpc. This field, which is generated purely from linear perturbations, is expected to be amplified significantly after reionization, and to be further boosted by dynamo processes during nonlinear structure formation.
description: Submitted to PRL on April 1st
OMNeT++ based source code of Proof-of-Quality-Factor (PoQF) consensus in blockchain-enabled V2V communications.
Creators: name: Ayaz, Ferheen
Publisher: name: Zenodo
Year: 2021
Subjects: blockchain
VANET
consensus

description: This is the source code of Proof-of-Quality-Factor (PoQF) consensus designed in OMNeT++ to implement blockchain based vehicular communications in cases of emergency, for example, an incident. The published paper can be found here: A Proof-of-Quality-Factor (PoQF)-Based Blockchain and Edge Computing for Vehicular Message Dissemination | IEEE Journals & Magazine | IEEE Xplore .
The width of the omega meson in the nuclear medium
Creators: name: Ramos, A.
name: Tolos, L.
name: Molina, R.
name: Oset, E.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We evaluate the width of the $ω$ meson in nuclear matter. We consider the free decay mode of the $ω$ into three pions, which is dominated by $ρπ$ decay, and replace the $ρ$ and $π$ propagators by their medium modified ones. We also take into account the quasielastic and inelastic processes induced by a vector-baryon interaction dominated by vector meson exchange, as well as the contributions coming from the $ω\to K \bar K$ mechanism with medium modified $K$, $\bar K$ propagators. We obtain a substantial increase of the $ω$ width in the medium, reaching a value of $129 \pm 10$ MeV at normal nuclear matter density for an $ω$ at rest, which comes mainly from $ωN \to ππN, ωN N \to πNN$ processes associated to the dominant $ω\to ρπ$ decay mode. The value of the width increases moderately with momentum, reaching values of around 200 MeV at 600 MeV/c.
description: 25 pages, 14 figures, revised version to appear published in Eur. Phys. J. A
Navigating New Frontiers: SME-Driven Supply Chain Innovation Under AfCFTA
Creators: name: Okafor, Kamsi
Publisher: name: Pericles Institute
Year: 2024

description: AfCFTA focuses on connecting diverse economies into a unified market. The project aims to remove trade barriers, unify regulations, and promote economic growth. To meet these goals, small and medium-sized enterprises (SMEs) and innovative supply chains should be designed to facilitate trade, upgrade productivity, and ensure overall economic progress.
Erignathus Gill 1866
Creators: name: W. Christopher Wozencraft
Publisher: name: Zenodo
Year: 1993
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Carnivora
Phocidae
Erignathus

description: Erignathus Gill, 1866. Proc. Essex Inst. Salem, 5:5. TYPE SPECIES: Phoca barbata Fabricius, 1791 (= Phoca barbata Erxleben, 1777).
description: Published as part of W. Christopher Wozencraft, 1993, Order Carnivora, pp. 279-348 in Mammal Species of the World (2 nd Edition), Washington and London :Smithsonian Institution Press on page 329, DOI: 10.5281/zenodo.7359191
description: {"references": ["Erxleben, J. C. P. 1777. Systema regni animalis per classes, ordines, genera, species, varietates, cum synonymia et historia animalium. Classis I. Mammalia. Weygandianis, Lipsiae, 636 pp."]}
Analysis of double hybrid density-functionals along the adiabatic connection
Creators: name: Cornaton, Yann
name: Franck, Odile
name: Teale, Andrew M.
name: Fromager, Emmanuel
Publisher: name: arXiv
Year: 2013
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: We present a graphical analysis of the adiabatic connections underlying double-hybrid density-functional methods that employ second-order perturbation theory. Approximate adiabatic connection formulae relevant to the construction of these functionals are derived and compared directly with those calculated using accurate ab initio methods. The discontinuous nature of the approximate adiabatic integrands is emphasized, the discontinuities occurring at interaction strengths which mark the transitions between regions that are: (i) described predominantly by second- order perturbation theory (ii) described by a mixture of density-functional and second-order perturbation theory contributions and (iii) described purely by density-functional theory. Numerical examples are presented for a selection of small molecular systems and van der Waals dimers. The impacts of commonly used approximations in each of the three sections of the adiabatic connection are discussed along with possible routes for the development of improved double-hybrid methodologies.
description: 42 pages, 3 figures
Measurements of Unsteady Pressures and Wake Fluctuations for Flow Over a Cylinder at Supercritical Reynolds Number
Creators: name: Spitzer, Robert Edward
Publisher: name: California Institute of Technology
Year: 1965
Subjects: Aeronautical engineering
Aeronautics

description: A test was conducted to measure and map the unsteady pressure fluctuations over the surface of a smooth, cantilevered, circular cylinder in the supercritical Reynolds number range from 2.5 x 105 to 7.5 x 105. Lift fluctuations were measured, hot-wire wake surveys were made, and the effects of boundary-layer tripping were investigated. Power spectral densities were computed from recordings of the fluctuations, and cross-correlation coefficients were determined.

Pressure fluctuations were found to be small in magnitude but with relatively high axial correlation except at the points of flow separation. Definite evidence of periodicity was found in the pressure fluctuations excluding those in the region of flow separation. Fluctuating lift was found to be random in nature in the supercritical regime. Power spectra of wake velocity fluctuations after transition showed largely turbulent patterns with perhaps some dominance at Strouhal number near 0.4 seen on occasion. Localized boundary-layer tripping caused earlier flow separation, significant increases in pressure and lift fluctuations, a greater degree of axial correlation, and a shift in the power spectra to indicate periodic effects.
Apprehension of Newborn Infants by Child Protection Services: Experiences of Mothers
Creators: name: Parmar, Natasha
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2021
Subjects: Apprehension
Newborn
Custody loss
Grief
Mothers
Maternal identity
Experiences
Disenfranchised grief
Marginalized
Mothers' rights
Perinatal nurses
Child protection services
Interpretive descriptive

description: In Ontario, 1% of women who give birth have their newborn infant apprehended by child protection agencies (~200/year). Hospital-based perinatal nurses are in a unique position to support mothers. However, there is a lack of research examining mothers’ experiences of newborn infant apprehension. The purpose of this study was to explore mothers’ experiences with nurses and other providers when newborn infant apprehension occurs. Doka’s Disenfranchised Grief Framework was used as a lens to help guide the research questions, methods and analysis. Thorne’s Interpretive Descriptive approach was employed. Mothers who had experienced newborn infant apprehension in the last 10 years were recruited from an agency in Ontario. Nine individual, semi-structured interviews were conducted. When analyzing the data, the researchers identified patterns and themes from among the mothers’ varied experiences. The analysis resulted in four themes: Not good enough, I am a mother, I have rights, I live everyday like I’m grieving, and Hope in the face of adversity. The findings illuminated the imbalance of power that mothers face when experiencing newborn infant apprehension, where power and authority rest with health and social service providers. This research study will focus on the findings describing what mothers want - for nurses to be open-minded, non-judgmental, to teach mothers regarding cycles of violence, and to advocate for mothers’ rights. Ultimately, the mothers posited that nurses are well positioned to empower mothers, thereby giving them the opportunity to begin recovery. The findings indicate a need for nurses to provide safe, compassionate, competent, ethical care and inform how perinatal nurses can better support mothers experiencing newborn infant apprehension.
Erignathus barbatus
Creators: name: W. Christopher Wozencraft
Publisher: name: Zenodo
Year: 1993
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Carnivora
Phocidae
Erignathus
Erignathus barbatus

description: Erignathus barbatus (Erxleben, 1777). Syst. Regni Anim., 1:590. TYPE LOCALITY: "ad Scotiam atque Groelandiam australiorem, vulgaris circa Islandiam" [North Atlantic, S Greenland]. DISTRIBUTION: Circumpolar Arctic seas (Canada, Greenland, Japan, Norway, USA, republics of the former USSR), south to Hokkaido (Japan) and Newfoundland. SYNONYMS: albigena Pallas, 1811; lepechenii Lesson, 1828; leporina Lepechin, 1778; nautica Pallas, 1811; parsonii Lesson, 1828.
description: Published as part of W. Christopher Wozencraft, 1993, Order Carnivora, pp. 279-348 in Mammal Species of the World (2 nd Edition), Washington and London :Smithsonian Institution Press on page 329, DOI: 10.5281/zenodo.7359191
description: {"references": ["Pallas, P. S. 1811 [1831]. Zoographia Rosso-Asiatica, sistens omnium Animalium in extenso Imperio Rossico et adjacentibus maribus observatorum recensionem, domicillia, mores et descriptiones, anatomen atque icones plurimorum. [ICZN Opinion 212 -- dates of volumes: 1 & 2: 1811; 3: 1814]. Petropoli, in officina Caes. acadamiae scientiarum. 3 vol. [official date of publ for vol 1 - 1811 impress], 1: 1 - 568."]}
A naturally light dilaton
Creators: name: Coradeschi, Francesco
name: Lodone, Paolo
name: Pappadopulo, Duccio
name: Rattazzi, Riccardo
name: Vitale, Lorenzo
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Goldstone's theorem does not apply straightforwardly to the case of spontaneously broken scale invariance. We elucidate under what conditions a light scalar degree of freedom, identifiable with the dilaton, can naturally arise. Our construction can be considered an explicit dynamical solution to the cosmological constant problem in the scalar version of gravity.
description: v2: published version
Feminism in Foreign Policy: Women’s Role in Promoting Prosperity
Creators: name: Moskov, Henry
Publisher: name: Pericles Institute
Year: 2024

description: Despite a long history of international influence, action taken in female empowerment has remained a relatively understated policy objective. However, gender equity is intrinsically tied to national interest, because national interest is intrinsically tied to peace, which is intrinsically related to gender equity.
RC Measurement Uncertainty Estimation Method for Directive Antennas and Turntable Stirring
Creators: name: Ruiz, Alejandro Antón
name: Kvarnstrand, John
name: Arvidsson, Klas
name: Glazunov, Andrés Alayón
Publisher: name: arXiv
Year: 2025
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: This paper investigates measurement uncertainty in a Reverberation Chamber (RC) within the lower FR2 bands (24.25-29.5 GHz). The study focuses on the impact of several factors contributing to RC measurement uncertainty, including finite sample size, polarization imbalance, and spatial non-uniformity. A series of 24 measurements were conducted using a horn antenna, known for its directivity in mmWave frequencies, varying antenna parameters such as height, orientation, position on the turntable, and polarization within a predefined chamber volume. The measurement uncertainty was evaluated by a method based on the standardized 3GPP and CTIA approaches, incorporating uncorrelated measurements and analyzing Pearson correlation coefficients between measurement pairs. An analysis of variance (ANOVA) was performed on the frequency-averaged power transfer function to identify the significance and impact of each variable on measurement variability. Additionally, the K-factor was estimated for each measurement set as part of the RC characterization, using an alternative approach to account for the turntable stirring effect. The findings highlight which variables most significantly influence measurement uncertainty, where the antenna orientation emerges as the most significant factor for the mmWave directive antenna setup.
Approximation diophantienne avec contrainte d’angles
Creators: name: Champagne, Jérémy
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2021
Subjects: Théorie des nombres
Approximation diophantienne

description: Soient k, n des entiers avec 1 ≤ k ≤ n − 2. On cherche le suprémum ω(n, k) des nombres ω avec la propriété suivante. Pour tout point u ∈ ℝ^n u à coordonnées linéairement indépendantes sur ℚ, tout sous-espace E de ℝ^n orthogonal à u de dimension k et tout δ > 0, il existe une infinité de points non nuls x ∈ ℤ^n formant un angle au plus δ avec E tels que |x·u| ≤ ∥x∥^−ω. Ici, x·u désigne le produit scalaire de x avec u et ∥x∥ désigne la norme de x. En posant ν(m) = (m − 1 +√(m² + 2m − 3))/2, Schmidt (1976) a démontré que ω(3, 1) ≥ ν(2), puis Thurnheer (1990) a obtenu ω(n, n − 2) ≥ ν(n−1) en général. En 2014, Roy a établi que ω(3, 1) = ν(2). Dans ce mémoire, on montre que ω(n, 1) = ν(2) quel que soit n, on simplifie l’argument de Thurnheer et on montre que ω(n, k) ≥ ν(k+1) en général. On répond également à une question connexe de Badziahin et Bugeaud.
Halichoerus Nilsson 1820
Creators: name: W. Christopher Wozencraft
Publisher: name: Zenodo
Year: 1993
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Carnivora
Phocidae
Halichoerus

description: Halichoerus Nilsson, 1820. Skand. Faun. Dagg. Djur., 1:376. TYPE SPECIES: Halichoerus griseus Nilsson, 1820 (= Phoca grypus Fabricius, 1791). COMMENTS: Mohr (1952) described successful mating in captivity between Phoca hispida and Halichoerus grypus.
description: Published as part of W. Christopher Wozencraft, 1993, Order Carnivora, pp. 279-348 in Mammal Species of the World (2 nd Edition), Washington and London :Smithsonian Institution Press on page 329, DOI: 10.5281/zenodo.7359191
description: {"references": ["Mohr, E. 1952. Beitrage zur Kenntnis der Mahnenrobben. Zoologische Garten, 19: 98 - 112."]}
It's time to Turn the Tide on Crypto Mining
Creators: name: Ford, Aidan
Publisher: name: Pericles Institute
Year: 2024

description: Much could be written about the negative effects Bitcoin and its ilk have brought upon the United States. From pump-and-dump scams, Ponzi schemes, and outright wire fraud separating hard-earned cash from everyday Americans to the man-hours and resources used investigating not just those crimes.
Rebalancing Priorities: Why Taiwan Deserves America's Focus Over the Middle East
Creators: name: Marcone, Veronica
Publisher: name: Pericles Institute
Year: 2024

description: As China’s influence expands and its threats against Taiwan grow more aggressive, it’s time for the U.S. to reassess where its military resources are most critically needed. This means shifting focus from partners in the MENA region—where long-standing concerns about human rights and misuse of U.S. defense equipment persist—and redirecting resources toward Taiwan, where the stakes for U.S. strategic interests are higher than ever.
Baseline study of virus reservoirs in native plant species and crops (Virus reservoirs)
Creators: name: Botermans, Marleen
Publisher: name: Zenodo
Year: 2021
Subjects: Euphresco, plant health, risk analysis, surveillance, diagnostics, high-throughput sequencing, data

description: Slide of the Euphresco project 2020-A-347 'Baseline study of virus reservoirs in native plant species and crops (Virus reservoirs)'
description: Project funded through the Euphresco network
title: Работа с текстовым процессором MS OFFICE WORD
Creators: name: ELS IPR BOOKS
Publisher: name: Таганрогский институт управления и экономики
Year: 2022

description: В практикуме изложена информация о возможностях текстового процессора Microsoft Office Word. Рассмотрены структурные элементы текстового документа: заголовки, основная часть, иллюстрации (рисунки, таблицы, диаграммы, формулы, иные объекты), колонтитулы. Описываются процесс создания документа сложной структуры, работа с большим документом, использование стилей, закладок, организация гиперссылок, работа с колонтитулами, формирование оглавления документа, поиск информации в документе.
The radial profile of the inner heliospheric magnetic field as deduced from Faraday rotation observations
Creators: name: Mancuso, S.
name: Garzelli, M. V.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Faraday rotation measures (RMs) of the polarized emission from extragalactic radio sources occulted by the coronal plasma were used to infer the radial profile of the inner heliospheric magnetic field near solar minimum activity. By inverting LASCO/SOHO polarized brightness (pB) data taken during the days of observations on May 1997, we retrieved the electron density distribution along the lines of sight to the sources, thus allowing to disentangle the two plasma properties that contribute to the observed RMs. By comparing the observed RM values to those theoretically predicted by a power-law model of the radial component of the coronal magnetic field, using a best-fitting procedure, we found that the radial component of the inner heliospheric magnetic field can be nicely approximated by a power-law of the form B_r = 3.76 r^{-2.29} G in a range of heights from about 5 to 14 solar radii. Finally, our analysis suggests that the radial computation of the potential field source surface (PFSS) model from the Wilcox Solar Observatory (WSO), assuming a radial field in the photosphere and a source surface located at R_{ss} = 2.5 solar radii, is the preferred choice near solar minimum.
description: 17 pages, 5 figures, submitted for publication in A&A
An investigation of inspection criteria for countersunk rivets
Creators: name: Sanders, Lewis B.
Publisher: name: California Institute of Technology
Year: 1947
Subjects: Aeronautical Engineering
Aeronautics

description: An investigation was made of the existing flush rivet inspection criteria and inspection methods to establish a norm for commercial flush riveted joints. Studies were made of thirty-four flush riveted joint load deformation curves to obtain their general characteristics and to establish some correlation of yield load as defined in ANC-5 and as defined in Report on Flush Riveted Joint Strength by ARC Rivet and Screw Allowables Subcommittee (Airworthiness Project 12). The specimens corresponding to the load deformation curves were comprised of 18 machine countersunk joints, 12 double dimple joints and four sub-countersunk joints. Within each type of joints the specimen varied in series of sheet material and thickness, rivet material and rivet size.

It is shown that yield load, defined as load giving four percent of rivet diameter joint set, is dependent on d/t ratios, the yield load lowering at increasing d/t values. Also, there are indications that as softer rivet material is used with a given sheet material, the increasing d/t ratios have less adverse effects.

There could be made no particular correlation of yield load as defined by load at .005" set with any of the varying parameters.

In the case of the double dimple and sub-countersunk joints, no particular conclusions could be reached as the test data was confined to a small range of d/t values.

It was concluded from the countersunk rivet data that permanent set based on rivet diameter is a more reasonable yield criterion than permanent set based on an arbitrary constant.
Halichoerus grypus
Creators: name: W. Christopher Wozencraft
Publisher: name: Zenodo
Year: 1993
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Carnivora
Phocidae
Halichoerus
Halichoerus grypus

description: Halichoerus grypus (Fabricius, 1791). Skr. Nat. Selsk. Copenhagen, 1(2):167. TYPE LOCALITY: Listed by Scheffer (1958) as " Greenland ". DISTRIBUTION: Temperate and subarctic waters around Britain, Canada (Newfoundland area), Iceland, Greenland, Norway, Russia (Kola Peninsula), and Baltic Sea. SYNONYMS: atlantica Nehring, 1886; baltica Nehring, 1886; griseus Nilsson, 1820; halichoerus Thienemann, 1824; macrorhynchus Hornschuch and Schilling, 1851; pachyrhynchus Hornschuch and Schilling, 1851.
description: Published as part of W. Christopher Wozencraft, 1993, Order Carnivora, pp. 279-348 in Mammal Species of the World (2 nd Edition), Washington and London :Smithsonian Institution Press on pages 329-330, DOI: 10.5281/zenodo.7359191
description: {"references": ["Scheffer, V. B. 1958. Seals, sea lions, and walruses, a review of the Pinnipedia. Stanford University Press, Stanford, CA, 179 pp."]}
Quantum gravity and the cosmological constant: lessons from two-dimensional dilaton gravity
Creators: name: Govaerts, Jan
name: Zonetti, Simone
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In the investigation and resolution of the cosmological constant problem the inclusion of the dynamics of quantum gravity can be a crucial step. In this work we suggest that the quantum constraints in a canonical theory of gravity can provide a way of addressing the issue: we consider the case of two-dimensional quantum dilaton gravity non-minimally coupled to a U(1) gauge field, in the presence of an arbitrary number of massless scalar matter fields, intended also as an effective description of highly symmetrical higher-dimensional models. We are able to quantize the system non-perturbatively and obtain an expression for the cosmological constant Λin terms of the quantum physical states, in a generalization of the usual QFT approach. We discuss the role of the classical and quantum gravitational contributions to Λand present a partial spectrum of values for it.
description: 20 pages, 1 figure
Probing dark matter couplings to top and bottom at the LHC
Creators: name: Lin, Tongyan
name: Kolb, Edward W.
name: Wang, Lian-Tao
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Monojet searches are a powerful way to place model-independent constraints on effective operators coupling dark matter to the standard model. For operators generated by the exchange of a scalar mediator, however, couplings to light quarks are suppressed and the prospect of probing such interactions through the inclusive monojet channel at the LHC is limited. We propose dedicated searches, focusing on bottom and top quark final states, to constrain this class of operators. We show that a search in mono b-jets can significantly improve current limits. The mono-b signal arises partly from direct production of b-quarks in association with dark matter, but the dominant component is from top quark pair production in the kinematic regime where one top is boosted. A search for tops plus missing energy can strengthen the bounds even more; in this case signal and background have very different missing energy distributions. We find an overall improvement by several orders of magnitude in the bound on the direct detection cross section for scalar or pseudoscalar couplings.