cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
A comparative study of methods to estimate conversion gain in sub-electron and multi-electron read noise regimes
Creators: name: Hendrickson, Aaron
name: Haefner, David P.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Of all sensor performance parameters, the conversion gain is arguably the most fundamental as it describes the conversion of photoelectrons at the sensor input into digital numbers at the output. Due in part to the emergence of deep sub-electron read noise image sensors in recent years, the literature has seen a resurgence of papers detailing methods for estimating conversion gain in both the sub-electron and multi-electron read noise regimes. Each of the proposed methods work from identical noise models but nevertheless yield diverse procedures for estimating conversion gain. Here, an overview of the proposed methods is provided along with an investigation into their assumptions, uncertainty, and measurement requirements. A sensitivity analysis is conducted using synthetic data for a variety of different sensor configurations. Specifically, the dependence of the conversion gain estimate uncertainty on the magnitude of read noise and quanta exposure is explored. Guidance into the trade-offs between the different methods is provided so that experimenters understand which method is optimal for their application. In support of the reproducible research effort, the MATLAB functions associated with this work can be found on the Mathworks file exchange.
description: 14 pages, 7 figures, SPIE DCS 2023
The `Ars moriendi' tradition in late sixteenth and early seventeenth-century Protestant devotional prose written in English
Creators: name: Atkinson, David William
Publisher: name: University of Calgary
Year: 1975
Subjects: subject: PR 429 D4 A8 1975 Microfiche
subject: English literature - 16th century - History and criticism
subject: English literature - 17th century - History and criticism
subject: Devotional literature - History and criticism
subject: Death - Early works to 1800 - History and criticism
subject: Death in literature

description: Bibliography: p. 319-348.
title: The Distribution of Powers Between EU Institutions for Conducting External Affairs through Non-Binding Instruments
Creators: name: García Andrade, Paula
Publisher: name: European Papers (www.europeanpapers.eu)
Year: 2016
Subjects: subject: non-binding agreements
subject: external representation of the Union
subject: distribution of powers between EU institutions
subject: principle of institutional balance
subject: Art. 218 TFEU
subject: Arts 16 and 17 TEU

description: European Papers - A Journal on Law and Integration, 2016 1(1), 115-125
description: European Forum Insight of 16 April 2016
description: I. Introduction. - II. Decisions authorising the signature of non-binding agreements as acts "intended to produce legal effects". - III. Clarifying the respective scope of Arts 16 and 17 TEU. - IV. Concluding remarks.
description: The increasing tendency of the EU to resort to non-binding agreements in its external action raises the sensitive and still unclear question of the distribution of powers between EU institutions when adopting them. In light of the post-Lisbon provisions of primary law in the field of external action, this Insight attempts to clarify how to interpret Arts 16 and 17 TEU when demarcating the scope both of the external representation of the Union in the hands of the Commission, and that of the decision-making power of the Council, as regards the adoption by the Union of non-binding instruments. The Opinion of Advocate General Sharpston delivered in Case C-660/13 serves as the guiding thread of this analysis. In this Opinion, it is suggested that the Court of Justice annul the Commission's decision to authorise the signature of an addendum to the EU-Switzerland Memorandum of Understanding on a Swiss financial contribution to the new Member States of the EU, due to the breach of the principle of distribution of powers between institutions, enshrined in Art. 13, para. 2, TEU, insofar that the Commission signed this political agreement without the Council's prior authorisation.
GRB 221009A Afterglow from a Shallow Angular Structured Jet
Creators: name: Gill, Ramandeep
name: Granot, Jonathan
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Exceptionally bright gamma-ray burst (GRB) afterglows can reveal the angular structure of their jets. GRB jets appear to have a narrow core (of half-opening angle $θ_c$), beyond which their kinetic energy drops as a power-law with angle $θ$ from the jet's symmetry axis, $E_{k,\rm iso}(θ)\propto[1+(θ/θ_c)^2]^{-a/2}$. The power-law index $a$ reflects the amount of mixing between the shocked jet and confining medium, which depends on the jet's initial magnetization. Weakly magnetized jets undergo significant mixing, leading to shallow ($a\lesssim2$) angular profiles. We use the exquisite multi-waveband afterglow observations of GRB 221009A to constrain the jet angular structure using a dynamical model that accounts for both the forward and reverse shocks, for a power-law external density profile, $n_{\rm{}ext}\propto{}R^{-k}$. Both the forward-shock emission, that dominates the optical and X-ray flux, and the reverse-shock emission, that produces the radio afterglow, require a jet with a narrow core ($θ_c\approx0.021$) and a shallow angular structure ($a\approx0.8$) expanding into a stellar wind ($k\approx2$). Moreover, these data appear to favor a small fraction ($ξ_e\approx10^{-2}$) of shock-heated electrons forming a power-law energy distribution in both shocks.
description: 5 pages, 3 figures. Accepted to MNRAS Letters
Finding the ciliary beating pattern with optimal efficiency
Creators: name: Osterman, Natan
name: Vilfan, Andrej
Publisher: name: arXiv
Year: 2011
Subjects: subject: Biological Physics (physics.bio-ph)
subject: Fluid Dynamics (physics.flu-dyn)
subject: Cell Behavior (q-bio.CB)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: We introduce a measure for energetic efficiency of biological cilia acting individually or collectively and numerically determine the optimal beating patterns according to this criterion. Maximizing the efficiency of a single cilium leads to curly, often symmetric and somewhat counterintuitive patterns. But when looking at a densely ciliated surface, the optimal patterns become remarkably similar to what is observed in microorganisms like Paramecium. The optimal beating pattern then consists of a fast effective stroke and a slow sweeping recovery stroke. Metachronal coordination is essential for efficient pumping and the highest efficiency is achieved with antiplectic waves. Efficiency also increases with an increasing density of cilia up to the point where crowding becomes a problem. We finally relate the pumping efficiency of cilia to the swimming efficiency of a spherical microorganism and show that the experimentally estimated efficiency of Paramecium is surprisingly close to the theoretically possible optimum.
description: 11 pages, 5 figures; includes animated 3D-PDF figure (Fig. 2); to appear in PNAS
Scottish poetic tradition in the poetry sections of the Scots Magazine and the Edinburgh Magazine or Literary Miscellany, 1739-1800
Creators: name: Buchanan, Mary Agnes
Publisher: name: University of Calgary
Year: 1977
Subjects: subject: PR 8567 B82 1977 Microfiche
subject: Scottish poetry - 18th century - History and criticism
subject: Scots Magazine
subject: Edinburgh Magazine or Literary Miscellany

description: Bibliography: p. 114-122.
title: Public Procurement, Social Policy and Minimum Wage Regulation for Posted Workers: Towards a More Balanced Socio-Economic Integration Process?
Creators: name: Kaupa, Clements
Publisher: name: European Papers (www.europeanpapers.eu)
Year: 2016
Subjects: subject: public procurement
subject: posted workers
subject: freedom to provide services
subject: social policy

description: European Papers - A Journal on Law and Integration, 2016 1(1), 127-138
description: European Forum Insight of 16 April 2016
description: I. Introduction: pursuing multiple policy objectives via public procurement. - II. Cross-border provision of services and the Posted Workers Directive. - III. Growing inequality and national procurement law. - IV. The decision RegioPost. - V. Conclusion.
description: Income inequality increased significantly over the past decades. The liberalization and outsourcing of public services, in conjunction with increased pressure on public budgets, has played a considerable role in this development: in procuring services they previously had provided themselves, public authorities fostered price competition among private operators vying for public contracts, which in turn exacerbated the pressure on wages. In response, some public authorities conceived of strategies aimed at neutralizing the downward pressure on wages they effected. Among the measures developed in this context is the establishment of a wage floor via public procurement that contractors and their sub-contractors have to comply with. In principle, European procurement law allows public authorities to set special performance conditions that exceed general regulatory standards. This is also the case in the social area. However, attempts to implement wage floors via public procurement have been repeatedly challenged on the basis of Directive 96/71 (Posted Workers Directive) and Art. 56 TFEU, as the decisions Rüffert (Court of Justice, judgment of 3 April 2008, case C-346/06), Bundesdruckerei (Court of Justice, judgment of 18 September 2014, case C-549/13) and, most recently, RegioPost (Court of Justice, judgment of 17 November 2015, case C-115/04) attest. The present text analyzes the decision RegioPost and sketches the extent to which public procurement can be employed to pursue social policy objectives. It will be shown that RegioPost confirmed the right of public authorities to pursue social objectives via procurement law, which also includes the setting of a procurement wage (even if it exceeds general wage levels), provided that it conforms to the formal requirements of Directive 96/71. The decision clarifies and partly overturns the controversial judgment Rüffert, and - despite its perhaps somewhat technical nature - may contribute to an integration process that is more balanced in socio-economic terms.
R. B. Cunninghame Graham: the neglected scottish writing
Creators: name: Curme, Nancy
Publisher: name: University of Calgary
Year: 1979
Subjects: subject: PR 6013 R19 Z58 1979 Microfiche
subject: Graham, Robert Bontine Cunninghame, 1852-1936
subject: Scottish literature

description: Bibliography: p. 109-113.
Dead calm areas in the very quiet Sun
Creators: name: González, M. J. Martínez
name: Sainz, R. Manso
name: Ramos, A. Asensio
name: Hijano, E.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We analyze two regions of the quiet Sun (35.6 x 35.6 Mm^2) observed at high spatial resolution (~100 km) in polarized light by the IMaX spectropolarimeter onboard the Sunrise balloon. We identify 497 small-scale (~400 km) magnetic loops, appearing at an effective rate of 0.25 loop h^{-1} arcsec^{-2}; further, we argue that this number and rate are underestimated by ~30%. However, we find that these small dipoles do not appear uniformly on the solar surface: their spatial distribution is rather filamentary and clumpy, creating dead calm areas, characterized by a very low magnetic signal and a lack of organized loop-like structures at the detection level of our instruments, that cannot be explained as just statistical fluctuations of a Poisson spatial process. We argue that this is an intrinsic characteristic of the mechanism that generates the magnetic fields in the very quiet Sun. The spatio-temporal coherences and the clumpy structure of the phenomenon suggest a recurrent, intermittent mechanism for the generation of magnetic fields in the quietest areas of the Sun.
description: accepted in ApJ
title: Evaluating growth-at-risk as a tool for monitoring macro-financial risks in the Peruvian economy
Creators: name: Chicana, Diego
name: Nivin, Rafael
Publisher: name: Graduate Institute of International and Development Studies
publisherIdentifier: https://ror.org/007ygn379
publisherIdentifierScheme: ROR
Year: 2021

description: Graduate Institute of International and Development Studies Working Paper ; no. 07/2021
Analysing the impact of bottom friction on shallow water waves over idealised bottom topographies
Creators: name: Liu, Chang
name: Clark, Antwan D.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: Analysing the impact of bottom friction on shallow water waves over bottom terrains is important in areas including environmental and coastal engineering as well as the oceanic and atmospheric sciences. However, current theoretical developments rely on making certain limiting assumptions about these flows and thus more development is needed to be able to further generalise this behaviour. This work uses Adomian decomposition method (ADM) to not only develop semi-analytical formulations describing this behaviour, for flat terrains, but also as reverse-engineering mechanisms to develop new closed-form solutions describing this type of phenomena. Specifically, we respectively focus on inertial geostrophic oscillations and anticyclonic vortices with finite escape times in which our results directly demonstrate the direct correlation between the constant Coriolis force, the constant bottom friction, and the overall dynamics. Additionally, we illustrate elements of dissipation-induced instability with respect to constant bottom friction in these types of flows where we also demonstrate the connection to the initial dynamics for certain cases.
description: 24 pages, 2 figures. arXiv admin note: text overlap with arXiv:2301.02957
title: Schengen, Differentiated Integration and Cooperation with the 'Outs'
Creators: name: Miglio, Alberto
Publisher: name: European Papers (www.europeanpapers.eu)
Year: 2016
Subjects: subject: differentiated integration
subject: opting-out
subject: Ireland and the United Kingdom
subject: Schengen acquis
subject: EUROSUR Regulation
subject: cooperation through international agreements

description: European Papers - A Journal on Law and Integration, 2016 1(1), 139-148
description: European Forum Insight of 16 April 2016
description: I. Introduction. - II. The Schengen Protocol and the position of Ireland and the United Kingdom. - III. Distinguishing "limited cooperation" from a full"taking part" in the Schengen acquis. - IV. Concluding remarks.
description: In case C-44/14, Spain v. European Parliament and Council, the Court of Justice of the European Union has had the opportunity to clarify the scope and effects of the British and Irish opt-out in the Schengen area. The Court held that a limited cooperation with those countries by means of international agreements in an area of the Schengen acquis, that does not apply, notoriously, to Ireland and the United Kingdom, does not infringe Art. 4 of the Schengen Protocol. By upholding the legality of such agreements, the judgment introduces some flexibility in dealing with opt-outs, while at the same time confirming that an unrestrained à la carte approach would not be tolerated.
Meson Correlation Function and Screening Mass in Thermal QCD
Creators: name: Czerski, Piotr
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Analytical results for the spatial dependence of the correlation functions for all meson excitations in perturbative Quantum Chromodynamics, the lowest order, are calculated. The meson screening mass is obtained as a large distance limit of the correlation function. Our analysis leads to a better understanding of the excitations of Quark Gluon Plasma at sufficiently large temperatures and may be of relevance for future numerical calculations with fully interacting Quantum Chromodynamics.
description: 11 pages
A Comparative study of the radiolysis and photolysis (18490A) of hydrogen and deuterium chloride
Creators: name: Jardine, Douglas K.
Publisher: name: University of Calgary
Year: 1970
Subjects: subject: QD 601 J35 1970
subject: Radiochemistry
subject: Photochemistry
subject: Hydrogen
subject: Deuterium

description: Bibliography: p. 91-94.
The "canonical" White Dwarf Cooling Sequence of M5
Creators: name: Chen, Jianxing
name: Ferraro, Francesco R.
name: Salaris, Maurizio
name: Cadelano, Mario
name: Lanzoni, Barbara
name: Pallanca, Cristina
name: Althaus, Leandro G.
name: Cassisi, Santi
Publisher: name: arXiv
Year: 2023
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Recently, a new class of white dwarfs (dubbed ``slowly cooling WDs'') has been identified in two globular clusters (namely M13 and NGC 6752) showing a horizontal branch (HB) morphology with an extended blue tail. The cooling rate of these WDs is reduced by stable thermonuclear hydrogen burning in their residual envelope, and they are thought to be originated by stars that populate the blue tail of the HB and then skip the asymptotic giant branch phase. Consistently, no evidence of such kind of WDs has been found in M3, a similar cluster with no blue extension of the HB. To further explore this phenomenon, we took advantage of deep photometric data acquired with the Hubble Space Telescope in the near-ultraviolet and investigate the bright portion of the WD cooling sequence in M5, another Galactic globular cluster with HB morphology similar to M3. The normalized WD luminosity function derived in M5 turns out to be impressively similar to that observed in M3, in agreement with the fact that the stellar mass distribution along the HB of these two systems is almost identical. The comparison with theoretical predictions is consistent with the fact that the cooling sequence in this cluster is populated by canonical (fast cooling) WDs. Thus, the results presented in this paper provide further support to the scenario proposing a direct causal connection between the slow cooling WD phenomenon and the horizontal branch morphology of the host stellar cluster.
description: 12 pages, 8 figures, accepted in the ApJ
A new Hamiltonian for the Topological BF phase with spinor networks
Creators: name: Bonzom, Valentin
name: Livine, Etera R.
Publisher: name: arXiv
Year: 2011
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We describe fundamental equations which define the topological ground states in the lattice realization of the SU(2) BF phase. We introduce a new scalar Hamiltonian, based on recent works in quantum gravity and topological models, which is different from the plaquette operator. Its gauge-theoretical content at the classical level is formulated in terms of spinors. The quantization is performed with Schwinger's bosonic operators on the links of the lattice. In the spin network basis, the quantum Hamiltonian yields a difference equation based on the spin 1/2. In the simplest case, it is identified as a recursion on Wigner 6j-symbols. We also study it in different coherent states representations, and compare with other equations which capture some aspects of this topological phase.
description: 40 pages
title: Die Wesentliche Vertragsverletzung - Probleme des Art. 25 WKR und Parallelen im österreichischen Recht: Vortrag vor dem Europa-Institut der Universität des Saarlandes in Saarbrücken am 28. Oktober 1989
Creators: name: Musger, Gottfried
Publisher: name: Europa-Institut
Year: 1989
Subjects: subject: 346

description: Vorträge, Reden und Berichte aus dem Europa-Institut, vol. 168
description: 168, Europa-Institut 1981
The cluster structure of the inner crust of neutron stars in the Hartree-Fock-Bogoliubov approach
Creators: name: Grill, F.
name: Margueron, J.
name: Sandulescu, N.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Nuclear Theory (nucl-th)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We analyse how the structure of the inner curst is influenced by the pairing correlations. The inner-crust matter, formed by nuclear clusters immersed in a superfluid neutron gas and ultra-relativistic electrons, is treated in the Wigner-Seitz approximation. The properties of the Wigner-Seitz cells, i.e., their neutron to proton ratio and their radius at a given baryonic density, are obtained from the energy minimization at beta equilibrium. To obtain the binding energy of baryonic matter we perform Skyrme-HFB calculations with zero-range density-dependent pairing forces of various intensities. We find that the Wigner-Seitz cells have much smaller numbers of protons compared to previous calculations. For the dense cells the binding energy of the configurations with small proton numbers do not converge to a well-defined minimum value which precludes the determination of their structure. We show that for these cells there is a significant underestimation of the binding energy due to the boundary conditions at the border of the cells imposed through the Wigner-Seitz approximation.
description: 22 pages, 5 figures
Hierarchical Wilson-Cowan Models and Connection Matrices
Creators: name: Zúñiga-Galindo, W. A.
name: Zambrano-Luna, B. A.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Neurons and Cognition (q-bio.NC)
subject: FOS: Biological sciences

description: This work aims to study the interplay between the Wilson-Cowan model and the connection matrices. These matrices describe the cortical neural wiring, while the Wilson-Cowan equations provide a dynamical description of neural interaction. We formulate the Wilson-Cowan equations on locally compact Abelian groups. We show that the Cauchy problem is well-posed. We then select a type of group that allows us to incorporate the experimental information provided by the connection matrices. We argue that the classical Wilson-Cowan model is incompatible with the small-world property. A necessary condition to have this property is that the Wilson-Cowan equations be formulated on a compact group. We propose a p-adic version of the Wilson-Cowan model, a hierarchical version in which the neurons are organized into an infinite rooted tree. We present several numerical simulations showing that the p-adic version matches the predictions of the classical version in relevant experiments. The p-adic version allows the incorporation of the connection matrices into the Wilson-Cowan model. We present several numerical simulations using a neural network model that incorporates a p-adic approximation of the connection matrix of the cat cortex.
description: All the visualizations were improved. An additional section called Final Discussion was added
An Eclipsing Binary Comprising Two Active Red Stragglers of Identical Mass and Synchronized Rotation: A Post-Mass-Transfer System or Just Born That Way?
Creators: name: Stassun, Keivan G.
name: Torres, Guillermo
name: Kounkel, Marina
name: Tofflemire, Benjamin M.
name: Leiner, Emily
name: Feliz, Dax L.
name: Dixon, Don M.
name: Mathieu, Robert D.
name: Gosnell, Natalie
name: Gully-Santiago, Michael
Publisher: name: arXiv
Year: 2023
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We report the discovery of 2M0056-08 as an equal-mass eclipsing binary (EB), comprising two red straggler stars (RSSs) with an orbital period of 33.9 d. Both stars have masses of 1.419 Msun, identical to within 0.2%. Both stars appear to be in the early red-giant phase of evolution; however, they are far displaced to cooler temperatures and lower luminosities compared to standard stellar models. The broadband spectral energy distribution shows NUV excess and X-ray emission, consistent with chromospheric and coronal emission from magnetically active stars; indeed, the stars rotate more rapidly than typical red giants and they evince light curve modulations due to spots. These modulations also reveal the stars to be rotating synchronously with one another. There is evidence for excess FUV emission and long-term modulations in radial-velocities; it is not clear whether these are also attributable to magnetic activity or if they reveal a tertiary companion. Stellar evolution models modified to account for the effects of spots can reproduce the observed radii and temperatures of the RSSs. If the system possesses a white dwarf tertiary, then mass-transfer scenarios could explain the manner by which the stars came to possess such remarkably identical masses and by which they came to be sychronized. However, if the stars are presumed to have been formed as identical twins, and they managed to become tidally synchronized as they evolved toward the red giant branch, then all of the features of the system can be explained via activity effects, without requiring a complex dynamical history.
description: 23 pages, 15 figures, accepted for publication in ApJ
Vector fields in cosmology
Creators: name: Davydov, Evgeny
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Vector fields can arise in the cosmological context in different ways, and we discuss both abelian and nonabelian sector. In the abelian sector vector fields of the geometrical origin (from dimensional reduction and Einstein-Eddington modification of gravity) can provide a very non-trivial dynamics, which can be expressed in terms of the effective dilaton-scalar gravity with the specific potential. In the non-abelian sector we investigate the Yang-Mills SU(2) theory which admits isotropic and homogeneous configuration. Provided the non-linear dependence of the lagrangian on the invariant F*F(dual), one can obtain the inflationary regime with the exponential growth of the scale factor. The effective amplitudes of the 'electric' and 'magnetic' components behave like slowly varying scalars at this regime, what allows the consideration of some realistic models with non-linear terms in the Yang-Mills lagrangian.
description: Submitted to Proceedings of "8-th International Conference on Progress in Theoretical Physics", Constantine, Algeria, October 23-25, 2011
The IACOB project IX. Building a modern empirical database of Galactic O9-B9 supergiants: sample selection, description, and completeness
Creators: name: de Burgos, Abel
name: Simón-Díaz, Sergio
name: Urbaneja, Miguel A.
name: Negueruela, Ignacio
Publisher: name: arXiv
Year: 2023
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Blue supergiants (BSGs) are important objects to study the intermediate phases of massive star evolution, helping to constrain evolutionary models. However, the lack of a holistic study of a statistically significant and unbiased sample of these objects makes several long-standing questions about their nature to remain unsolved. The present and other upcoming papers of the IACOB series are focused in studying - from a pure empirical point of view - a sample of 500 Galactic O9 - B9 stars with luminosity classes I and II (plus 250 late O- and early B-type stars with luminosity classes III, IV and V) and covering distances up to 4 kpc from the Sun. We compile an initial set of 11000 high-resolution spectra of 1600 Galactic late O- and B-type stars. We use a new novel spectroscopic strategy based on a simple fitting of the Hbeta line to select stars in a specific region of the spectroscopic HR diagram. We evaluate the completeness of our sample using the Alma Luminous Star catalog (ALS III) and Gaia-DR3 data. We show the benefits of the proposed strategy for identifying BSGs descending from stellar objects born as O-type stars, in the context of single star evolution. The resulting sample reaches a high level of completeness with respect to the ALS III catalog, gathering the 80% for all-sky targets brighter than Bmag < 9 located within 2 kpc. However, we identify the need for new observations in specific regions of the Southern hemisphere. In conclusion, we have explored a very fast and robust method to select BSGs, providing a valuable tool for large spectroscopic surveys like WEAVE-SCIP or 4MIDABLE-LR, and highlighting the risk of using spectral classifications from the literature. Upcoming works will make use of this large and homogeneous spectroscopic sample to study specific properties of these stars in detail. We initially provide first results about their rotational properties.
description: Accepted for publication in Astronomy and Astrophysics. 59 pages, 20 figures
A Genome-Scale Insight into the Effect of Shear Stress During the Fed-Batch Production of Clavulanic Acid by Streptomyces Clavuligerus
Creators: name: Gómez-Ríos, David
name: López-Agudelo, Victor A.
name: Ramírez-Malule, Howard
name: Neubauer, Peter
name: Junne, Stefan
name: Ochoa, Silvia
name: Ríos-Estepa, Rigoberto
Publisher: name: Technische Universität Berlin
Year: 2020
Subjects: subject: 570 Biowissenschaften; Biologie
subject: Streptomyces
subject: genome-scale model
subject: flux balance analysis
subject: clavulanic acid
subject: Streptomyces clavuligerus
subject: TCA cycle
subject: secondary metabolism
subject: metabolic modeling
subject: antibiotic

description: Streptomyces clavuligerus is a filamentous Gram-positive bacterial producer of the β-lactamase inhibitor clavulanic acid. Antibiotics biosynthesis in the Streptomyces genus is usually triggered by nutritional and environmental perturbations. In this work, a new genome scale metabolic network of Streptomyces clavuligerus was reconstructed and used to study the experimentally observed effect of oxygen and phosphate concentrations on clavulanic acid biosynthesis under high and low shear stress. A flux balance analysis based on experimental evidence revealed that clavulanic acid biosynthetic reaction fluxes are favored in conditions of phosphate limitation, and this is correlated with enhanced activity of central and amino acid metabolism, as well as with enhanced oxygen uptake. In silico and experimental results show a possible slowing down of tricarboxylic acid (TCA) due to reduced oxygen availability in low shear stress conditions. In contrast, high shear stress conditions are connected with high intracellular oxygen availability favoring TCA activity, precursors availability and clavulanic acid (CA) production.
New 26P(p,γ)27S thermonuclear reaction rate and its astrophysical implication in rp-process
Creators: name: Hou, S. Q.
name: Liu, J. B.
name: Trueman, T. C. L.
name: Li, J. G.
name: Pignatari, M.
name: Bertulani, C.
name: Xu, X. X.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Nuclear Theory (nucl-th)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Accurate nuclear reaction rates for 26P(p,γ)27S are pivotal for a comprehensive understanding of rp-process nucleosynthesis path in the region of proton-rich sulfur and phosphorus isotopes. However, large uncertainties still exist in the current rate of 26P(p,γ)27S because of the lack of the nuclear mass and the energy level structure information of 27S. We reevaluate this reaction rate using the experimentally constrained 27S mass, together with the shell-model predicted level structure. It is found that the 26P(p,γ)27S reaction rate is dominated by a direct-capture (DC) reaction mechanism despite the presence of three resonances at E = 1.104, 1.597, 1.777 MeV above the proton threshold in 27S. The new rate is overall smaller than the other previous rates from Hauser-Feshbach statistical model by at least one order of magnitude in the temperature range of X-ray burst interest. In addition, we consistently update the photodisintegration rate using the new 27S mass. The influence of new rates of forward and reverse reaction in the abundances of isotopes produced in rp-process is explored by post-processing nucleosynthesis calculations. The final abundance ratio of 27S/26P obtained using the new rates is only 10% of that from the old rate. The abundance flow calculations show the reaction path 26P(p,γ)27S(\b{eta}+,ν)27P is not as important as thought previously for producing 27P. The adoption of the new reaction rates for 26P(p,γ)27S only reduces the final production of aluminum by 7.1%, and has no discernible impact on the yield of other elements.
GENDER TENGLIGINI TA`MINLASHNING XALQARΟ HUQUQIY JIHATLARI
Creators: name: Xalilοva, Mοhinur
Publisher: name: Zenodo
Year: 2023

description: Ushbu maqοlada muallif tοmοnidan gender tengligini ta`minlashning xοrijiy tajriba va xalqarο huquqiy hujjatlarni tahlili asοsida Ο'zbekistοnda ushbu sοhadagi qοnunchilikni takοmillashtirish zarur degan qat'iy fikr ilgari suriladi.
Bianca's Case Study: Leading a school culture of quality research use
Creators: name: Gleeson, Jo
name: Cutler, Blake
name: Hall, Genevieve
name: Rickinson, Mark
name: Walsh, Lucas
Publisher: name: Monash University
Year: 2023
Subjects: Professional education and training
Teacher education and professional development of educators
Educational administration, management and leadership

description: This practitioner case study focuses on Bianca and how she, as Principal of South Harbour Public School, led her staff to use research and evidence in their work to create a learning culture for themselves and their students.
 Bianca’s case study was developed by the Monash Q Project (2019-2023) and published as part of the resources for the Quality Use of Research Evidence (QURE) Assessment Tool – a confidential online questionnaire enabling educators and education system leaders, as individuals or as a group, to reflect upon and assess their use of research in their practice.
Radiolysis of penicillamine and cysteine solutions
Creators: name: Goyal, Geesh Chand
Publisher: name: University of Calgary
Year: 1974
Subjects: subject: QD 651 P4 G68 1974 Microfiche
subject: Penicillin
subject: Cysteine
subject: Radiation chemistry

description: Bibliography: p. 122-130.
Mapping Research Topics on Debt to Equity Ratio (DER) in Sharia and Conventional Banking: VOSviewer Bibliometric Study and Literature Review
Creators: name: Budianto, Eka Wahyu Hestya
name: Dewi, Nindi Dwi Tetria
Publisher: name: Zenodo
Year: 2023

description: This study aims to determine the research mapping regarding the Debt to Equity Ratio (DER) ratio in Islamic and Conventional Banking using a mix-method approach, namely the VOSviewer bibliometric study and literature review. Data analysis techniques include: (1) mapping the distribution of journal publications around the DER ratio; (2) mapping the results of the VOSviewer bibliometric visualization around the DER ratio based on the number of clusters and their items; and (3) mapping research topics around the DER ratio using a literature review study. The results showed that: (1) based on the distribution of journal publications, there were 69 journal publications regarding the DER ratio; (2) based on the mapping of the VOSviewer bibliometric study, the network visualization results around the DER ratio are divided into 6 clusters and 1 96 topic items; (3) based on the mapping of literature review studies, there are 20 topics around the DER ratio. The implications and contributions of this research are to map research topics around DER ratios in Islamic and Conventional Banking which are often or rarely researched by researchers so that they can be a reference for subsequent researchers.
Taming the Pion Cloud of the Nucleon
Creators: name: Alberg, Mary
name: Miller, Gerald A.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present a light-front determination of the pionic contribution to the nucleon self-energy, $Σ_π$, to second-order in pion-baryon coupling constants that allows the pion-nucleon vertex function to be treated in a model-independent manner constrained by experiment. The pion mass $μ$ dependence of $Σ_π$ is consistent with chiral perturbation theory results for small values of $μ$ and is also linearly dependent on $μ$ for larger values, in accord with the results of lattice QCD calculations. The derivative of $Σ_π$ with respect to $μ^2$ yields the dominant contribution to the pion content, which is consistent with the $\bar{d}-\bar{u}$ difference observed experimentally in the violation of the Gottfried sum rule.
description: 11 pages, 3 figures
Transduction of quantum information from charge qubit to nanomechanical cat-state
Creators: name: Radić, D.
name: Gorelik, L. Y.
name: Kulinich, S. I.
name: Shekhter, R. I.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences
subject: ams.org

description: We suggest a nanoelectromechanical setup and corresponding time protocol of its manipulation by which we transduce quantum information from charge qubit to nanomechanical cat state. The setup is based on the AC Josephson effect between bulk superconductors and mechanically vibrating mesoscopic superconducting island in the regime of the Cooper pair box. Starting with a pure state with quantum information initially encoded into superposition of the Cooper pair box states, applying a specially tailored time protocol upon bias voltage and gate electrodes, we obtain a new pure state with information finally encoded into superposition of nanomechanical coherent states constituting the cat state. This performance is achieved using quantum entanglement between electrical and mechanical states. Nanomechanical cat states serve as a storage of quantum information, motivated by significantly longer decoherence time with respect to the charge qubit states, from which the information can be transdued back to the charge qubit applying the reverse time protocol.
description: 6 pages, 4 pictures
Surface phase transitions in BiFeO3 below room temperature
Creators: name: Jarrier, R.
name: Marti, X.
name: Herrero-Albillos, J.
name: Ferrer, P.
name: Haumont, R.
name: Gemeiner, P.
name: Geneste, G.
name: Berthet, P.
name: Schülli, T.
name: Cvec, P.
name: Blinc, R.
name: Wong, Stanislaus S.
name: Park, Tae-Jin
name: Alexe, M.
name: Carpenter, M. A.
name: Scott, J. F.
name: Catalan, G.
name: Dkhil, B.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We combine a wide variety of experimental techniques to analyze two heretofore mysterious phase transitions in multiferroic bismuth ferrite at low temperature. Raman spectroscopy, resonant ultrasound spectroscopy, EPR, X-ray lattice constant measurements, conductivity and dielectric response, specific heat and pyroelectric data have been collected for two different types of samples: single crystals and, in order to maximize surface/volume ratio to enhance surface phase transition effects, BiFeO3 nanotubes were also studied. The transition at T=140.3K is shown to be a surface phase transition, with an associated sharp change in lattice parameter and charge density at the surface. Meanwhile, the 201K anomaly appears to signal the onset of glassy behaviour.
description: submitted to PRB
Multiplexing-based control of wavefront propagation: the interplay of inter-layer coupling, asymmetry and noise
Creators: name: Semenov, Vladimir V.
name: Jalan, Sarika
name: Zakharova, Anna
Publisher: name: arXiv
Year: 2023
Subjects: subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: FOS: Physical sciences

description: We show how multiplexing influences propagating fronts in multilayer networks of coupled bistable oscillators. Using numerical simulation, we investigate both deterministic and noise-sustained propagation. In particular, we demonstrate that the multiplexing allows to reduce the intra-layer dynamics to a common regime where the front propagation speed in all the interacting layers attains the same fixed value. In the presence of noise the dynamics is more complicated and is characterized by the ability of the system to adjust to the common propagation speed for varying the multiplexing strength. In addition, we find that the noise-induced stabilization of wavefront propagation in multilayer networks allows to obtain less pronounced deviations of the wavefront compared to the stabilization achieved in the isolated layer. Finally, we demonstrate that the reduction of the wavefront deviations can be enhanced by increasing the number of interacting layers.
description: 7 pages, 4 figures
Split-complex representation of the universal hypermultiplet
Creators: name: Emam, Moataz H.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Split-complex fields usually appear in the context of Euclidean supersymmetry. In this paper, we propose that this can be generalized to the non-Euclidean case and that, in fact, the split-complex representation may be the most natural way to formulate the scalar fields of the five dimensional universal hypermultiplet. We supplement earlier evidence of this by studying a specific class of solutions and explicitly showing that it seems to favor this formulation. We also argue that this is directly related to the symplectic structure of the general hypermultiplet fields arising from non-trivial Calabi-Yau moduli. As part of the argument, we find new explicit instanton and 3-brane solutions coupled to the four scalar fields of the universal hypermultiplet.
Initiality for Typed Syntax and Semantics
Creators: name: Ahrens, Benedikt
Publisher: name: arXiv
Year: 2012
Subjects: subject: Logic in Computer Science (cs.LO)
subject: FOS: Computer and information sciences

description: We give an algebraic characterization of the syntax and semantics of a class of simply-typed languages, such as the language PCF: we characterize simply-typed binding syntax equipped with reduction rules via a universal property, namely as the initial object of some category. For this purpose, we employ techniques developed in two previous works: in [2], we model syntactic translations between languages over different sets of types as initial morphisms in a category of models. In [1], we characterize untyped syntax with reduction rules as initial object in a category of models. In the present work, we show that those techniques are modular enough to be combined: we thus characterize simply-typed syntax with reduction rules as initial object in a category. The universal property yields an operator which allows to specify translations - that are semantically faithful by construction - between languages over possibly different sets of types. We specify a language by a 2-signature, that is, a signature on two levels: the syntactic level specifies the types and terms of the language, and associates a type to each term. The semantic level specifies, through inequations, reduction rules on the terms of the language. To any given 2-signature we associate a category of models. We prove that this category has an initial object, which integrates the types and terms freely generated by the 2-signature, and the reduction relation on those terms generated by the given inequations. We call this object the (programming) language generated by the 2-signature. [1] Ahrens, B.: Modules over relative monads for syntax and semantics (2011), arXiv:1107.5252, to be published in Math. Struct. in Comp. Science [2] Ahrens, B.: Extended Initiality for Typed Abstract Syntax. Logical Methods in Computer Science 8(2), 1-35 (2012)
description: presented at WoLLIC 2012, 15 pages
Theme of personal freedom in the fictional work of George Orwell
Creators: name: Cook, David Robert Southwick
Publisher: name: University of Calgary
Year: 1973
Subjects: subject: PR 6029 R8 Z678 1973 Microfiche
subject: Orwell, George, 1903-1950
subject: Autonomy (Psychology) in literature

description: Bibliography: p. 144-147.
Joint Modeling of Radial Velocities and Photometry with a Gaussian Process Framework
Creators: name: Tran, Quang H.
name: Bedell, Megan
name: Foreman-Mackey, Daniel
name: Luger, Rodrigo
Publisher: name: arXiv
Year: 2023
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Developments in the stability of modern spectrographs have led to extremely precise instrumental radial velocity (RV) measurements. For most stars, the detection limit of planetary companions with these instruments is expected to be dominated by astrophysical noise sources such as starspots. Correlated signals caused by rotationally-modulated starspots can obscure or mimic the Doppler shifts induced by even the closest, most massive planets. This is especially true for young, magnetically active stars where stellar activity can cause fluctuation amplitudes of $\gtrsim$0.1 mag in brightness and $\gtrsim$100 m s$^{-1}$ in RV semi-amplitudes. Techniques that can mitigate these effects and increase our sensitivity to young planets are critical to improving our understanding of the evolution of planetary systems. Gaussian processes (GPs) have been successfully employed to model and constrain activity signals in individual cases. However, a principled approach of this technique, specifically for the joint modeling of photometry and RVs, has not yet been developed. In this work, we present a GP framework to simultaneously model stellar activity signals in photometry and RVs that can be used to investigate the relationship between both time series. Our method, inspired by the $\textit{FF}^\prime$ framework of (Aigrain et al. 2012), models spot-driven activity signals as the linear combinations of two independent latent GPs and their time derivatives. We also simulate time series affected by starspots by extending the $\texttt{starry}$ software (Luger et al. 2019) to incorporate time evolution of stellar features. Using these synthetic datasets, we show that our method can predict spot-driven RV variations with greater accuracy than other GP approaches.
description: 19 pages, 10 figures